CN116123726A - Temperature control method, device, ventilation apparatus, and readable storage medium - Google Patents

Abstract

Embodiments of the present invention provide a temperature control method, device, ventilation equipment, and readable storage medium. The temperature control method is applied to ventilation equipment, and the ventilation equipment includes a temperature measuring device, a device body, and a heating pipeline. The method It includes: obtaining the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device as the inlet temperature of the heating pipeline; the temperature measuring device is set at a designated position of the ventilation equipment, and the The distance between the designated position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline; The heating power of the heating pipeline; according to the heating power, the gas in the heating pipeline is heated, so that the output end of the ventilation device provides gas at the target temperature. In this way, the manufacturing cost of the heating line can be reduced.

Description

Temperature control method, device, ventilation device and readable storage medium

technical field

The invention relates to the field of ventilation equipment, in particular to a temperature control method, device, ventilation equipment and a readable storage medium.

Background technique

Ventilation equipment is a type of equipment that heats gas and outputs gas that meets requirements. Existing ventilation equipment usually includes a host for delivering the gas to be heated, an interface device, and a heating pipeline connecting the host and the interface device.

In the prior art, a heating device is usually installed in the heating pipeline, and a temperature measuring device for measuring the gas temperature is installed at the gas outlet end of the heating pipeline, and the temperature of the output gas at the end of the heating pipeline is controlled based on the detected gas outlet temperature. The heating pipeline has a certain length. If the temperature measuring device is installed at the gas outlet end of the pipeline, the temperature measuring device needs to be connected with a cable with the same or longer length as the heating pipeline to transmit measurement data. However, the cost of the cables increases the overall manufacturing cost of the heating circuit. Therefore, the existing heating pipeline has the problem of high manufacturing cost.

Contents of the invention

The invention provides a temperature control method, device, ventilation equipment and readable storage medium to solve the problem of high manufacturing cost of the existing heating pipeline.

In order to solve the problems of the technologies described above, the present invention is achieved in that:

In the first aspect, the present invention provides a temperature control method, which is applied to ventilation equipment, and the ventilation equipment includes a temperature measuring device, a device body and a heating pipeline, and the method includes:

Obtain the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device as the inlet temperature of the heating pipeline; the temperature measuring device is set at a designated position of the ventilation equipment, and the designated position The distance from the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline;

determining the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device;

The gas in the heating pipeline is heated according to the heating power, so that the output end of the ventilation device provides gas at the target temperature.

Optionally, before determining the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device, the method further includes:

Obtain the time required for the gas to pass through the heating pipeline as the gas heating time;

The determining the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device includes:

determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating duration, to obtain a first loss value;

calculating the temperature rise value of the gas in the heating pipeline according to the intake air temperature, the target temperature and the first loss value;

The heating power of the heating pipeline is determined according to the temperature rise value and the gas heating time.

Optionally, before determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating duration, the method further includes:

Obtain the ambient temperature where the ventilation equipment is located;

The determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time to obtain a first loss value includes:

determining the temperature loss parameter of the heating pipeline according to the gas heating duration;

Calculate the temperature loss value according to the intake air temperature, the ambient temperature and the temperature loss parameter to obtain a first loss value.

Optionally, the determining the heating power of the heating pipeline according to the temperature rise value and the gas heating duration includes:

determining the temperature rise parameter of the heating pipeline according to the heating time of the gas;

The heating power of the heating pipeline is calculated according to the temperature rise value and the temperature rise parameter.

Optionally, the determining the temperature loss parameter of the heating pipeline according to the gas heating time includes:

Obtaining heat loss parameters and pipeline insulation parameters of the heating pipeline, and gas insulation parameters of the gas in the heating pipeline;

Calculate the temperature loss parameter of the heating pipeline according to the heating time of the gas, the heat loss parameter of the heating pipeline, the pipeline insulation parameter, and the gas insulation parameter of the gas in the heating pipeline; wherein, the The temperature loss parameter is positively correlated with the gas heating time and the heat loss parameter, and the temperature loss parameter is negatively correlated with the pipeline insulation parameter and the gas insulation parameter.

Optionally, the determining the temperature rise parameter of the heating pipeline according to the gas heating duration includes:

Acquiring internal energy increase parameters and external work parameters of the gas in the heating pipeline;

Calculate the temperature rise parameter of the heating pipeline according to the gas heating time, the internal energy increase parameter and the external work parameter of the gas in the heating pipeline; wherein, the temperature rise parameter is related to the gas heating time and the The internal energy increase parameter is positively correlated, and the temperature rise parameter is negatively correlated with the external work parameter.

Optionally, in the case where the ventilation device further includes an interface device, the method further includes:

determining the temperature loss parameter of the interface device according to the gas heating duration;

calculating a temperature loss value of the interface device according to the intake air temperature, the ambient temperature, and a temperature loss parameter of the interface device, to obtain a second loss value;

The calculating the temperature rise value of the gas in the heating pipeline according to the intake air temperature, the target temperature and the first temperature loss value includes:

The temperature rise value of the gas in the heating pipeline is calculated according to the intake air temperature, the target temperature, the first temperature loss value and the second loss value.

In the second aspect, the present invention provides a temperature control device, which is applied to ventilation equipment, and the ventilation equipment includes a temperature measuring device, a device body and a heating pipeline, and the device includes:

The first acquisition module is used to acquire the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device as the intake air temperature of the heating pipeline; the temperature measuring device is arranged on the ventilation device A designated position, the distance between the designated position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline;

A first determination module, configured to determine the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device;

A control module, configured to heat the gas in the heating pipeline according to the heating power, so that the output end of the ventilation device provides gas at the target temperature.

Optionally, the device also includes:

The second acquisition module is used for the first determination module to obtain the gas required to pass through the heating pipeline before the first determination module determines the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device. The length of time, as the length of gas heating;

The first determination module is specifically used to: determine the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time to obtain a first loss value; according to the intake air temperature, the target temperature and the first loss value, calculate the temperature rise value of the gas in the heating pipeline; determine the heating power of the heating pipeline according to the temperature rise value and the gas heating time.

Optionally, before determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time, the device further includes:

The third obtaining module is used for the first determining module to obtain the ambient temperature where the ventilation device is located before determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating duration;

The first determination module is specifically further configured to: determine the temperature loss parameter of the heating pipeline according to the gas heating duration; calculate the temperature according to the intake air temperature, the ambient temperature and the temperature loss parameter Loss value, get the first loss value.

Optionally, the first determining module is specifically further configured to: determine the temperature rise parameter of the heating pipeline according to the gas heating duration; calculate the temperature rise parameter of the heating pipe according to the temperature rise value and the temperature rise parameter. The heating power of the road.

Optionally, the first determination module is specifically further configured to: acquire heat loss parameters and pipeline insulation parameters of the heating pipeline, and gas insulation parameters of the gas in the heating pipeline; , the heat loss parameter and pipeline insulation parameter of the heating pipeline, and the gas insulation parameter of the gas in the heating pipeline, and calculate the temperature loss parameter of the heating pipeline; wherein, the temperature loss parameter and the The gas heating time is positively correlated with the heat loss parameter, and the temperature loss parameter is negatively correlated with the pipeline insulation parameter and the gas insulation parameter.

Optionally, the first determination module is specifically further configured to: obtain internal energy increase parameters and external work parameters of the gas in the heating pipeline; increase parameters and external work parameters, and calculate the temperature rise parameter of the heating pipeline; wherein, the temperature rise parameter is positively correlated with the gas heating time and the internal energy increase parameter, and the temperature rise parameter is related to the external Work parameters are negatively correlated.

Optionally, the device also includes:

The second determination module is used to determine the temperature loss parameter of the interface device according to the gas heating time when the ventilation device further includes an interface device;

A calculation module, configured to calculate the temperature loss value of the interface device according to the intake air temperature, the ambient temperature, and the temperature loss parameter of the interface device, to obtain a second loss value;

The first determination module is specifically further configured to: calculate the temperature rise value of the gas in the heating pipeline according to the intake air temperature, the target temperature, the first temperature loss value, and the second loss value .

In a third aspect, the present invention provides an aeration device, which is equipped with the temperature control device as described above, and is used to execute the temperature control method as described above.

In a fourth aspect, the present invention provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the ventilation device, the steps of any one of the above temperature control methods are implemented.

In the embodiment of the present invention, the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device is used as the intake air temperature of the heating pipeline; position, the distance between the specified position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline; according to the inlet temperature and the target temperature at the output end of the ventilation device , determining the heating power of the heating pipeline; heating the gas in the heating pipeline according to the heating power, so that the output end of the ventilation device provides gas at the target temperature. In this way, by setting the temperature measuring device at a designated position close to the inlet end of the heating pipeline, and detecting the temperature of the gas at the inlet end of the heating pipeline through the temperature measuring device, compared with the prior art where the temperature measuring device is set at the heating The gas outlet end of the pipeline can reduce the length of the cable connected to the temperature measuring device. Therefore, the manufacturing cost of the cable of the temperature measuring device can be reduced, and to a certain extent, the manufacturing cost of the heating pipeline can be reduced.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a flow chart of the steps of a temperature control method described in an embodiment of the present invention;

Fig. 2 is the schematic diagram of setting the temperature measuring point at the outlet of the heating pipeline in the prior art;

3 is a schematic diagram of an application scenario of the temperature control method described in the embodiment of the present invention;

Fig. 4 is a schematic diagram of the temperature loss parameter matrix of the heating pipeline described in the embodiment of the present invention;

Fig. 5 is a schematic diagram of the temperature rise parameter matrix of the heating pipeline described in the embodiment of the present invention;

6 is a schematic diagram of the composition of the temperature control model described in the embodiment of the present invention;

7 is a schematic diagram of the temperature loss parameter matrix of the nasal oxygen tube described in the embodiment of the present invention;

Fig. 8 is a schematic diagram of another application scenario of the temperature control method described in the embodiment of the present invention;

Fig. 9 is a schematic composition diagram of another temperature control model described in the embodiment of the present invention;

Fig. 10 is a block diagram of a temperature control device according to an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a flow chart of the steps of a temperature control method provided by an embodiment of the present invention. As shown in Fig. 1, the temperature control method is applied to ventilation equipment, and the ventilation equipment includes a temperature measuring device, a device body and a heating pipeline. The method can include:

Step 101. Obtain the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device as the inlet temperature of the heating pipeline; the temperature measuring device is set at a designated position of the ventilation equipment, and the The distance between the designated position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline.

The temperature control method of the embodiment of the present invention is applied to the ventilation equipment, and the ventilation equipment may include a temperature measuring device, a device body and a heating pipeline. Wherein, the ventilation equipment can heat the gas through the heating pipeline. The device body in the embodiment of the present invention can provide the gas to be heated, and the heating pipeline is connected to the device body for heating the gas delivered from the device body. Wherein, the gas to be heated may be nitrogen, oxygen or helium, which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, the temperature measuring device can be arranged at a designated position of the ventilating device, and is used to detect the temperature of the gas provided by the device body. Wherein, the specified position may be a preset position near the inlet end of the heating pipeline, specifically, it may be a preset position on the side of the device body or a preset position on the side of the heating pipeline, which is not limited in the embodiment of the present invention. The distance between the designated position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline. Wherein, the specified position can be a preset position on the heating pipeline, for example, it is set at the interface of the heating pipeline for connecting the device body, the distance between the interface and the inlet end of the heating pipeline is generally on the order of centimeters, and the distance of the heating pipeline is generally on the order of centimeters. The length is generally on the order of meters. Therefore, the distance between the interface and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline. Alternatively, the specified position may be a preset position on the device body close to the heating pipeline, for example, it may be on the pipeline inside the device body 2 cm away from the heating pipeline interface, so that the preset position on the device body is far from the heating pipeline inlet The distance between the ends is less than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline.

In the embodiment of the present invention, the temperature measuring device is arranged at the interface of the heating pipeline for connecting to the equipment body or at a preset position on the equipment body close to the heating pipeline, so that the temperature of the gas detected by the temperature measuring device can be compared with that of the heating pipeline. The actual gas temperature difference at the start end is not higher than 1 degree Celsius. For example, in the actual test of the embodiment of the present invention, the temperature difference can be controlled at the order of a few tenths of a degree. Wherein, the temperature measuring device may be a thermistor or a gas temperature sensor, which is only an example here, and is not limited in the embodiment of the present invention.

In the embodiment of the present invention, the control device of the ventilation equipment can acquire the measurement data of the temperature measurement device and process the measurement data, wherein the measurement data can include the gas temperature detected by the temperature measurement device at a moment, or the gas temperature detected within a period of time to a set of gas temperatures. The gas temperature detected at a moment can be used as the intake air temperature of the heating pipeline at that moment, or the average value of a group of gas temperatures within a period of time can be calculated as the average intake air of the heating pipeline during the working period The temperature is just an example here, and the embodiment of the present invention does not limit it. Among them, the gas temperature is the temperature detected when the gas generated by the equipment body passes through the temperature measuring device, and the intake air temperature is used to represent the temperature when the gas enters the heating pipeline. In the embodiment of the present invention, the gas temperature detected by the temperature measuring device is used as The inlet temperature of the heating circuit.

Step 102: Determine the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device.

In the embodiment of the present invention, the output end of the ventilation device may be the end of the heating pipeline, or the output end of the interface device connected to the heating pipeline, which is not limited in the embodiment of the present invention. The target temperature may be the temperature set by the user as the target temperature at the output end of the ventilation device by responding to the user's temperature setting operation on the ventilation setting. The heating pipeline in the embodiment of the present invention includes a heating device, wherein the heating device may be a heating wire, and the heating wire may be embedded in the pipeline wall or arranged inside the pipeline, which is not limited in the embodiment of the present invention.

In the embodiment of the present invention, according to the difference between the intake air temperature and the target temperature at the output end of the ventilation device, for example, the difference between the intake air temperature and the target temperature can be calculated, and the heating pipeline can be obtained according to the difference between the intake air temperature and the target temperature The temperature value that the gas in the gas needs to rise. Further, the heating power required by the heating device in the heating pipeline can be determined according to the required temperature rise of the gas and the characteristics of the gas itself. Among them, the heating power is used to characterize the working power of the heating device in the heating pipeline when it is running.

Step 103, heating the gas in the heating pipeline according to the heating power, so that the output end of the ventilation device provides gas at the target temperature.

In the embodiment of the present invention, the control device of the ventilation equipment can control the heating device in the heating pipeline to generate corresponding heat energy for the gas in the heating pipeline according to the heating power, and the temperature of the gas in the heating pipeline rises after absorbing heat energy , the temperature of the gas at the output of the aerator can be brought to the target temperature. Among them, the heating pipeline can be heated by electricity, for example, a heating wire is arranged in the heating pipeline. Of course, the gas in the pipeline can also be heated by light wave heating or magnetic field heating. This is just an example. The embodiments of the invention do not limit this.

In the prior art, as shown in Figure 2, the heating pipeline of the prior art is provided with a temperature measuring point at the outlet of the pipeline, for example, the temperature of the gas is detected by a thermistor or a temperature sensor, and further controlled by proportional integral differential ( The proportional-integral-derivative control (PID) control model controls the heating power to heat the gas in the pipeline and realize the temperature control of the output gas of the heating pipeline. The cable of a certain length connected to the temperature measuring device has manufacturing cost, which increases the manufacturing cost of the heating pipeline in the prior art. Compared with the prior art, the embodiment of the present invention detects the gas temperature at the inlet end of the heating pipeline through the temperature measuring device, and realizes the temperature control of the gas in the heating pipeline through the temperature control of the ventilation equipment, so that the ventilation equipment The output can provide gas at the target temperature.

To sum up, in the temperature control method provided by the embodiment of the present invention, the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device is obtained as the inlet temperature of the heating pipeline; The temperature device is set at a designated position of the ventilation equipment, and the distance between the designated position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline; temperature and the target temperature at the output end of the aeration device, determine the heating power of the heating pipeline; heat the gas in the heating pipeline according to the heating power, so that the output end of the aeration device provides the target temperature of the gas. In this way, by setting the temperature measuring device at a designated position close to the inlet end of the heating pipeline, and detecting the temperature of the gas at the inlet end of the heating pipeline through the temperature measuring device, compared with the prior art where the temperature measuring device is set at the heating The gas outlet end of the pipeline can reduce the length of the cable connected to the temperature measuring device. Therefore, the manufacturing cost of the cable of the temperature measuring device can be reduced, and thus the manufacturing cost of the heating pipeline can be reduced to a certain extent.

It should be noted that the temperature control method of the embodiment of the present invention can be applied to gas heating equipment in the general industrial field, for example, involving air compressors or various equipment with its own air source. Optionally, this method can also be applied to gas heating equipment in the air duct HVAC industry, and can be used in scenarios involving air ducts, supplementary heat for air conditioning boxes, and warehouse constant temperature systems.

Optionally, the temperature control method in the embodiment of the present invention may be applied to ventilation equipment such as a ventilator in the field of medical equipment. Exemplarily, FIG. 3 is a schematic diagram of an application scenario of a temperature control method according to an embodiment of the present invention. As shown in FIG. 3 , the ventilator is a ventilator, and the ventilator includes a device body, a heating circuit, and a mask, wherein the mask is an interface device , due to the structural characteristics of the mask, the output end of the ventilator is the end of the heating circuit. The temperature measuring device is installed on the equipment body, and the heating pipeline is connected to the equipment body through the pipeline joint. Obtain the gas temperature detected by the temperature measuring device as the inlet temperature of the heating pipeline; determine the heating power of the heating pipeline according to the inlet temperature T and the output end of the ventilator, that is, the target temperature at the end of the heating pipeline; The power heats the gas in the heating line so that the end of the heating line provides gas at the target temperature. Ventilation equipment, such as a ventilator, usually sets the target temperature within the range of 18-30 degrees Celsius, and ventilation equipment such as a nasal high-flow humidified oxygen therapy device usually sets the target temperature within the range of 29-37 degrees Celsius. It should be noted that in actual application scenarios, the heating circuit of the ventilator or nasal high-flow humidified oxygen therapy device needs to be replaced frequently. Therefore, reducing the manufacturing cost of the heating circuit can reduce the use cost of the ventilator or the nasal high-flow humidified oxygen therapy device, and improve the market competitiveness of the product.

Optionally, before determining the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device, the method further includes:

Step 104, obtaining the time required for the gas to pass through the heating pipeline as the gas heating time.

In the embodiment of the present invention, the time required for the gas to pass through the heating pipeline can be determined according to the flow rate of the gas output by the ventilation device, the length and the cross-sectional area of the heating pipeline. Wherein, the ventilation device in the embodiment of the present invention can output gas at a fixed flow rate during operation, for example, 50 liters per minute. According to the gas flow rate and the cross-sectional area of the heating pipeline, the flow rate of the gas in the heating pipeline can be calculated. Specifically, the volume flow formula Q=VS can be used, where Q represents the volume flow rate of the gas, and V represents the average flow rate of the gas. The unit is meter per second, S represents the cross-sectional area of the heating pipeline and the unit is square meter. Further, according to the gas flow rate and the length of the heating pipeline, the time required for the gas to pass through the heating pipeline can be calculated, and the calculated time can be used as the gas heating time.

Step 1021 : Determine the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time to obtain a first loss value.

In the embodiment of the present invention, in the process of passing through the heating pipeline, the gas is heated and also works externally. Due to the respective characteristics of the gas and the heating pipeline, such as the material and thickness of the heating pipeline and the specific heat capacity of the gas, the gas Part of the heat will be lost, and the heat loss is manifested in the decrease of the temperature value of the gas temperature. The heat loss of the gas is given by the following formula:

ΔT=(T-Ta0

Among them, Q _Δ is the heat loss of the gas, the unit is Joule J, ΔT is the temperature difference between the inlet temperature T and the ambient temperature Ta, the unit is Kelvin K, Δt is the time for the gas from the beginning to the end of the heating pipeline, and the unit is s, R ₁ is the thermal resistance of the heating pipeline in Kelvin per watt K/W. Among them, the thermal resistance of the heating pipeline can be calculated according to the following formula:

Among them, L is the thickness of the heating pipeline, the unit is m, λ is the thermal conductivity of the heating pipeline, the unit is W/m Kelvin W/(m.K), and S is the surface area in square meters. According to the formula of heat and specific heat capacity, the following formula can be obtained:

Q _Δ ＝c×m(T _y ″-T _x ″)

Wherein, c is the specific heat capacity of the gas, m is the mass of the gas, Ty _″ is the gas temperature at the beginning of the heating pipeline, that is, the inlet temperature, and T _x ″ is the gas temperature at the end of the pipeline.

In the embodiment of the present invention, the heat loss of a certain volume of gas passing through the heating pipeline can be calculated according to the intake temperature and the heating time of the gas when the gas enters the heating pipeline, and the related heat loss parameters of the gas and the pipeline. Further, according to the calculated heat loss value, the temperature loss value of the heating pipeline is determined as the first loss value. Wherein, the temperature loss value is used to represent the gas temperature reduction value corresponding to the heat lost by the gas.

Step 1022: Calculate the temperature rise value of the gas in the heating pipeline according to the intake air temperature, the target temperature and the first loss value.

In the embodiment of the present invention, according to the intake temperature of the gas entering the heating pipeline, the target temperature set by the user for ventilation, and the first loss value, that is, the temperature loss value of a certain volume of gas after passing through the heating pipeline, the following formula is used: temperature Rise value = intake air temperature - target temperature + first loss value, calculate the temperature rise value required after a certain volume of gas passes through the heating pipeline.

Step 1023: Determine the heating power of the heating pipeline according to the temperature rise value and the gas heating time.

In the embodiment of the present invention, according to the first law of thermodynamics: part of the heat transmitted to the system from the outside is used to increase the internal energy of the system, and the other part is used for the external work of the system. When the state of the thermodynamic system changes, for example, when the heating pipeline in this embodiment heats the gas, the pressure of the material system remains constant. The process in which the pressure of the system remains constant is called an isobaric process. The characteristic of energy conversion in an isobaric process is that the heat absorbed by the system is equal to the sum of the increase in internal energy of the system and the work done by the system to the outside, that is, the system receives energy from the outside Absorbed heat = internal energy increase + external work done by the system. In the embodiment of the present invention, the system can be regarded as the gas in the heating pipeline, and the outside world can be regarded as the heating pipeline. The increase in the internal energy of the gas in the pipeline can be considered as the gas is heated and the temperature of the gas rises. The details are shown in the following formula:

Among them, Q _p is the heat absorbed by the system from the outside world, ΔE is the value of gas internal energy increase, W is the external work value of gas, M is the mass of gas, μ is the molar mass of gas, C _v is the molar heat capacity of gas, and the molar gas constant R =8.31J/mol.K) unit Joule per mole Kelvin, T _x ′ is the gas temperature at the end of the heating pipeline, Ty _′ is the gas temperature at the beginning of the heating pipeline, (T _x ′- _y ′) is the gas after heating The temperature rise value behind the pipeline, i is the degree of freedom of the gas, the gas to be heated, such as air, is mainly a diatomic gas composed of oxygen and nitrogen, and i is equal to 5. Optionally, the gas to be heated can also be helium. Hydrogen H2, oxygen O2, and nitrogen N2 are all diatomic molecules. Diatomic molecules in an ideal gas have five degrees of freedom, including three translational degrees of freedom and two degrees of freedom. 2 rotational degrees of freedom, there are 5 degrees of freedom in total, so i equals 5.

In the embodiment of the present invention, the heat generated by the heating device of the heating pipeline within a certain period of time is shown in the following formula:

_Qp = P× _Δt

Among them, P is the heating power of the heating device of the heating pipeline, and _Δt is the gas heating time. According to the temperature rise value and gas heating time required for the gas passing through the heating pipeline, the heat required to be generated by the heating device of the heating pipeline in the time period corresponding to the gas heating time can be calculated, and further, the heating pipeline is obtained by calculation The heating power P when the heating device is working.

In the embodiment of the present invention, the time required for the gas to pass through the heating pipeline is obtained as the gas heating time; according to the intake air temperature and the gas heating time, the temperature loss value of the heating pipeline is determined to obtain the first loss value; according to the Calculate the temperature rise value of the gas in the heating pipeline based on the gas temperature, target temperature and first loss value; determine the heating power of the heating pipeline according to the temperature rise value and the gas heating time. In this way, fully considering the temperature loss of the gas in the heating pipeline, by calculating the temperature loss value, the required temperature rise value of the gas calculated according to the temperature loss value can be more accurate. Furthermore, the heating power determined according to the temperature rise value and the gas heating time is also more accurate, so that the error of the actually obtained temperature rise value can be reduced, and precise temperature control of the gas can be realized.

Optionally, before determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating duration, the method further includes:

Step 105, acquiring the ambient temperature where the ventilation device is located.

In the embodiment of the present invention, the ambient temperature of the ventilation equipment can be obtained by setting an environmental temperature measuring device such as a room temperature meter in the ventilation equipment. Wherein, the ambient temperature is used to represent the current air temperature of the environment where the device is working. Exemplarily, ventilation equipment usually has a specified working environment temperature range, for example, the working environment temperature of the ventilator is in the temperature range of 5-35 degrees Celsius, and the working environment temperature of the nasal high-flow humidified oxygen therapy instrument is 18-28 degrees Celsius within range. Of course, other methods may also be used to acquire the ambient temperature where the ventilator is located, which is only used for illustration, and is not limited in this embodiment of the present invention.

Optionally, step 1021 may include the following steps:

Step 10211. Determine the temperature loss parameter of the heating pipeline according to the gas heating time.

In the embodiment of the present invention, a temperature drop model can be established, and the temperature drop model is used to characterize the relationship between the temperature loss value and the characteristics of the gas, the characteristics of the heating pipeline, the intake air temperature, the ambient temperature, and the heating time of the gas. The temperature loss parameter can be used as the model coefficient of the temperature drop model, which can be determined according to the characteristics of the gas, the characteristics of the heating pipeline and the gas heating time, and is positively correlated with the gas heating time.

Step 10212: Calculate the temperature loss value according to the intake air temperature, the ambient temperature and the temperature loss parameter to obtain a first loss value.

In the embodiment of the present invention, based on the temperature drop model, the intake temperature when the gas enters the heating pipeline, the ambient temperature where the ventilation equipment is located, and the temperature loss parameters of the temperature drop model can be used according to the following formula: first loss value=temperature Loss parameter × (intake temperature - ambient temperature), calculate the temperature loss value corresponding to the heat loss of the gas passing through the heating pipeline, and obtain the first loss value. In the embodiment of the present invention, the process of the gas passing through the heating pipeline and being heated by the heating device is also the process of the heating pipeline relying on its own material and thickness to keep the gas in the pipeline warm. The smaller the drop, the closer the gas temperature at the end of the pipeline is to the gas temperature at the beginning of the pipeline.

In the embodiment of the present invention, by obtaining the ambient temperature of the ventilation equipment; determining the temperature loss parameter of the heating pipeline according to the gas heating time; calculating the temperature loss value according to the intake air temperature, ambient temperature and temperature loss parameters, and obtaining the first loss value. In this way, determining the temperature loss parameter of the heating pipeline according to the gas heating time can simplify the calculation steps of the temperature loss value, and can conveniently calculate the temperature loss value according to the intake air temperature, ambient temperature and temperature loss parameters to obtain the first loss value.

Optionally, step 1023 may include the following steps:

Step 10231. Determine the temperature rise parameter of the heating pipeline according to the gas heating duration.

In the embodiment of the present invention, a temperature rise model can be established, and the temperature rise model is used to characterize the relationship between the temperature rise value and the characteristics of the gas, the gas heating time, and the heating power of the heating pipeline. The process of heating the gas by the heating device of the heating pipeline is the process of heat conduction. Heat conduction means that when there is a temperature difference between different objects or inside the same object, it will pass through the microscopic vibration, displacement and mutual collision of molecules, atoms and electrons inside the object. energy transfer occurs. The effect of heat conduction is related to the characteristics of the gas itself. The gas is heated and receives heat so that the internal energy of the gas increases, which is expressed as the temperature of the gas rises. The temperature rise parameter can be used as the model coefficient of the temperature rise model, which can be determined according to the characteristics of the gas and the gas heating time, and is positively correlated with the gas heating time.

Step 10232: Calculate the heating power of the heating pipeline according to the temperature rise value and the temperature rise parameter.

In the embodiment of the present invention, based on the temperature rise model, the temperature rise parameter of the temperature rise model can be calculated according to the following formula: heating power=temperature rise value/temperature rise parameter according to the required temperature rise value after the gas passes through the heating pipeline. The temperature change meets the temperature rise value, and the heating power of the heating device corresponding to the heat provided by the heating device of the heating pipeline is required.

In the embodiment of the present invention, the temperature rise parameter of the heating pipeline is determined according to the gas heating time; and the heating power of the heating pipeline is calculated according to the temperature rise value and the temperature rise parameter. In this way, determining the temperature rise parameter of the heating pipeline according to the gas heating time can simplify the calculation steps of the heating power, and can conveniently calculate the heating power of the heating pipeline according to the temperature rise value and the temperature rise parameter.

Optionally, step 10211 may include the following steps:

Step 10211a, acquire the heat loss parameter and pipeline insulation parameter of the heating pipeline, and the gas insulation parameter of the gas in the heating pipeline.

In the embodiment of the present invention, the heat loss parameter of the heating pipeline is used to characterize the characteristics of the heating pipeline related to the heat loss of the heating pipeline, such as the thermal conductivity and surface area of the heating pipeline. The pipeline insulation parameter of the heating pipeline is used to characterize the characteristics of the heating pipeline related to the insulation effect of the heating pipeline, for example, it may be the thickness of the pipeline. The gas heat preservation parameters of the gas in the heating pipeline are used to characterize the properties of the gas related to the heat preservation effect of the gas, such as the specific heat capacity of the gas and the quality of the gas. This is only an example and is not limited by the embodiment of the present invention.

Step 10211b: Calculate the temperature loss parameter of the heating pipeline according to the heating time of the gas, the heat loss parameter of the heating pipeline, the pipeline insulation parameter, and the gas insulation parameter of the gas in the heating pipeline; wherein , the temperature loss parameter is positively correlated with the gas heating time and the heat loss parameter, and the temperature loss parameter is negatively correlated with the pipeline insulation parameter and the gas insulation parameter.

In the embodiment of the present invention, the formula of the temperature drop model is as follows:

Among them, _Ty ″ is the gas temperature at the beginning of the heating pipeline, that is, the intake air temperature, T _x ″ is the gas temperature at the end of the heating pipeline, Ty _″ -T _x ″ represents the temperature loss value of the gas, and λ is the temperature loss of the heating pipeline Thermal conductivity, S is the surface area, _Δt is the gas heating time, T is the inlet temperature, Ta is the ambient temperature, c is the specific heat capacity of the gas, m is the gas mass, and L is the thickness of the heating pipeline. Then, according to the gas heating time, the heat loss parameters of the heating pipeline, the pipeline insulation parameters, and the gas insulation parameters of the gas in the heating pipeline, the following formula can be used:

Calculate the temperature loss parameter T _loss of the heating pipeline. Among them, the temperature loss parameter _Tloss is positively correlated with the thermal conductivity λ of the heating pipeline, the surface area of the pipeline S and the gas heating time _Δt , and negatively correlated with the specific heat capacity c of the gas, the mass m of the gas and the thickness L of the pipeline.

Exemplarily, the operating temperature range of the ventilator is 5-35°C, the gas flow range is 20-200 liters per minute, and the temperature loss parameters of 5, 10, 15, 20, 25, 30, and 35°C can be obtained through experiments, Make the temperature loss parameters into a matrix list, as shown in Figure 4, where H-N corresponds to 5, 10, 15, 20, 25, 30, and 35 degrees Celsius, and 1-10 corresponds to flow rates of 20, 40, 60, 80, and 100 , 120, 140, 160, 180, 200 liters per minute flow. Wherein, H1 represents the corresponding temperature loss parameter of the ventilator at an ambient temperature of 5° C. and a flow rate of 20 liters per minute. This is only an example for illustration, and is not limited in this embodiment of the present invention. During the actual operation of the ventilator, the temperature loss parameters in corresponding situations can be obtained conveniently by quickly querying the temperature loss parameter matrix.

In the embodiment of the present invention, by obtaining the heat loss parameter and pipeline insulation parameter of the heating pipeline, and the gas insulation parameter of the gas in the heating pipeline; according to the gas heating time, the heat loss parameter of the heating pipeline and the pipeline insulation parameter, As well as the gas insulation parameters of the gas in the heating pipeline, the temperature loss parameters of the heating pipeline are calculated; among them, the temperature loss parameter is positively related to the gas heating time, inlet temperature, ambient temperature and heat loss parameters, and the temperature loss parameter is related to the pipeline The insulation parameters are negatively correlated with the gas insulation parameters. In this way, the temperature loss parameters are obtained through pre-calculation, which can facilitate related calculations based on the temperature loss parameters.

Optionally, step 10231 may include the following steps:

Step 10231a, acquire the internal energy increase parameters and external work parameters of the gas in the heating pipeline.

In the embodiment of the present invention, the internal energy increase parameter of the gas in the heating pipeline is used to characterize the characteristics of the gas related to the internal energy increase of the gas, such as the molar mass of the gas. The external work parameters of the gas in the heating pipeline are used to characterize the characteristics of the gas related to the external work of the gas, such as the gas molar heat capacity and the gas mass M, which are just examples here and are not limited in the embodiment of the present invention.

Step 10231b: Calculate the temperature rise parameter of the heating pipeline according to the heating time of the gas, the internal energy increase parameter and the external work parameter of the gas in the heating pipeline; wherein, the temperature rise parameter and the gas heating The duration is positively correlated with the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work parameter.

In the embodiment of the present invention, the formula of the heating model is as follows:

Among them, T _x ′ is the gas temperature at the end of the pipeline, Ty _′ is the gas temperature at the beginning of the pipeline, (T _x ′- _y ′) is the temperature rise of the gas, μ is the molar mass of the gas, Δ _t is the heating time of the gas, C _v is the gas molar heat capacity, M is the gas mass, and P is the heating power. Then you can increase the parameters and external work parameters according to the gas heating time and the internal energy of the gas in the heating pipeline, according to the following formula:

Calculate the temperature rise parameter T _liter of the heating pipeline. Among them, the temperature rise parameter T _liter is positively correlated with the gas heating time Δ _t and the gas molar mass μ, and the temperature rise parameter T _liter is negatively correlated with the gas molar heat capacity C _v and the gas mass M.

Exemplarily, the operating temperature range of the ventilator is 5-35°C, the gas flow range is 20-200 liters per minute, and the temperature rise parameters of 5, 10, 15, 20, 25, 30, and 35°C can be obtained through experiments, Make the temperature rise parameters into a matrix list, as shown in Figure 5, where A-G corresponds to 5, 10, 15, 20, 25, 30, and 35 degrees Celsius, and 1-10 corresponds to flow rates of 20, 40, 60, 80, and 100 , 120, 140, 160, 180, 200 liters per minute flow. Wherein, A1 represents the corresponding temperature rise parameter of the ventilator at an ambient temperature of 5° C. and a flow rate of 20 liters per minute. This is only an example and is not limited in this embodiment of the present invention. It should be noted that during the actual operation of the ventilator, the flow rate is generally calculated as the average flow rate, so the temperature rise parameter is the average temperature rise parameter, and the temperature rise parameter matrix can be quickly obtained by querying the temperature rise parameter matrix. temperature rise parameter.

In the embodiment of the present invention, by obtaining the internal energy increase parameters and external work parameters of the gas in the heating pipeline; according to the gas heating time and the internal energy increase parameters and external work parameters of the gas in the heating pipeline, the temperature rise of the heating pipeline is calculated Parameters; wherein, the temperature rise parameter is positively correlated with the gas heating duration and the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work parameter. In this way, the temperature rise parameter is obtained through pre-calculation, which can facilitate related calculations based on the temperature rise parameter.

Optionally, as shown in Figure 6, a temperature control model can be established for the temperature control method of the embodiment of the present invention. In the case where the output end of the ventilator is the end of the heating circuit, for example, the heating circuit in the ventilator is connected to the mask In the case of , the temperature control model can include a heating pipeline temperature rise model and a heating pipeline temperature drop model. The precise temperature control of the gas in the heating pipeline can be realized according to the temperature control model.

Optionally, in the case where the ventilation device further includes an interface device, the method further includes:

Step 201. Determine the temperature loss parameter of the interface device according to the gas heating duration.

In the embodiment of the present invention, the temperature drop model of the interface device can be established, and the temperature drop model of the interface device is used to characterize the relationship between the temperature loss value of the interface device and the characteristics of the gas, the characteristics of the interface device, the intake air temperature, the ambient temperature, and the heating time of the gas. relation. The temperature loss parameter of the interface device can be used as the model coefficient of the temperature drop model of the interface device, which can be determined according to the characteristics of the gas, the characteristics of the interface device and the gas heating time, and is positively correlated with the gas heating time.

Exemplarily, the operating temperature range of the nasal high-flow humidified oxygen therapy instrument is 18-28°C, the gas flow range is 20-200 liters per minute, and the temperature range of 18, 20, 22, 24, 26, and 28°C can be obtained through experiments. Temperature loss parameters, the temperature loss parameters are made into a matrix list, as shown in Figure 7, where h-m corresponds to 18, 20, 22, 24, 26, and 28 degrees Celsius, and 1-10 corresponds to flow rates of 20, 40, 60, and 80 , 100, 120, 140, 160, 180, 200 liters per minute flow. Among them, h1 represents the temperature loss parameter of the nasal oxygen tube corresponding to the ambient temperature of 5°C and the flow rate of 20 liters per minute of the nasal high-flow humidified oxygen therapy instrument. Do limit. During the actual operation of the nasal high-flow humidified oxygen therapy device, the temperature loss parameters of the nasal oxygen tube can be quickly and conveniently obtained by querying the temperature loss parameter matrix of the nasal oxygen tube.

Step 202. Calculate the temperature loss value of the interface device according to the intake air temperature, the ambient temperature, and the temperature loss parameter of the interface device to obtain a second loss value;

In the embodiment of the present invention, based on the temperature drop model of the interface device, the following formula can be used according to the intake temperature when the gas enters the interface device, the ambient temperature of the ventilation equipment, and the temperature loss parameters of the temperature drop model of the interface device: the second loss Value = interface device temperature loss parameter × (device intake temperature - ambient temperature), calculate the temperature loss value corresponding to the heat loss of the gas passing through the interface device, and obtain the second loss value. In the embodiment of the present invention, the process of gas passing through the interface device is also the process of the interface device relying on its own material and thickness to keep the gas in the interface device warm. The greater the thermal resistance of the interface device, the smaller the temperature drop of the gas, and the interface The gas temperature at the end of the device is closer to the gas temperature at the beginning of the interface device.

Exemplarily, FIG. 8 is a schematic diagram of an application scenario of another temperature control method according to an embodiment of the present invention. As shown in FIG. 8 , the ventilation device is a nasal high-flow humidified oxygen therapy device, and the nasal high-flow humidified oxygen therapy device includes equipment The main body, the heating pipeline and the nasal oxygen tube. The nasal oxygen tube is the interface device. Due to the structural characteristics of the nasal oxygen tube, the output end of the nasal high-flow humidified oxygen therapy instrument is the end of the nasal oxygen tube. The temperature measuring device is installed on the equipment body, and the heating pipeline is connected to the equipment body through the pipeline joint. Obtain the gas temperature detected by the temperature measuring device as the inlet temperature of the heating pipeline; determine the heating pipeline according to the inlet temperature T and the output end of the nasal high-flow humidified oxygen therapy device, that is, the target temperature at the end of the nasal oxygen tube The heating power; according to the heating power, the gas in the heating pipeline is heated so that the end of the nasal oxygen tube can provide the gas at the target temperature.

Optionally, step 1022 may include the following steps:

Step 10221: Calculate the temperature rise value of the gas in the heating pipeline according to the intake air temperature, the target temperature, the first temperature loss value and the second loss value.

In the embodiment of the present invention, according to the intake temperature of the gas entering the heating pipeline, the target temperature set by the user for ventilation, the first loss value, that is, the temperature loss value of a certain volume of gas passing through the heating pipeline, and the second loss value That is, the temperature loss value of a certain volume of gas after passing through the interface device, according to the following formula: temperature rise value = intake air temperature - target temperature + first loss value + second loss value, calculate a certain volume of gas after passing through the heating pipeline The desired temperature rise value.

Optionally, as shown in FIG. 9, a temperature control model can be established for the temperature control method of the embodiment of the present invention. In the case where the output end of the ventilation device is the end of the interface device, for example, in a nasal high-flow humidified oxygen therapy instrument When the heating pipeline is connected to the nasal oxygen tube, the temperature control model may include a heating pipeline temperature rise model, a heating pipeline temperature drop model, and an interface device temperature drop model. It should be noted that interface devices such as nasal oxygen tubes are passive pipelines and are not charged, so there is only a corresponding temperature drop model. The difference between the temperature drop model of the interface device and the temperature drop model of the heating pipeline is that the material, shape, thickness of the interface device such as the nasal oxygen tube and the heating pipeline are different. Therefore, the corresponding temperature loss parameters of the nasal oxygen tube There are also differences.

In the embodiment of the present invention, the temperature loss parameter of the interface device is determined according to the gas heating time; the temperature loss value of the interface device is calculated according to the intake air temperature, the ambient temperature and the temperature loss parameter of the interface device, and the second loss value is obtained; Calculate the temperature rise value of the gas in the heating pipeline based on the gas temperature, the target temperature, the first temperature loss value and the second loss value. In this way, the temperature loss of the interface device can be taken into account, making the calculation of the temperature rise of the gas in the heating pipeline more accurate, thereby realizing precise temperature control of the gas in the heating pipeline, and further reducing the output of the ventilation equipment The error in the target temperature of the gas at the end, that is, the end of the interface device.

Fig. 10 is a block diagram of a temperature control device 30 according to an embodiment of the present invention. As shown in Figure 10, the temperature control device 30 is applied to ventilation equipment, and the ventilation equipment includes a temperature measuring device, a device body and a heating pipeline. The device 30 may include:

The first acquisition module 301 is used to acquire the gas temperature at the inlet end of the heating pipeline detected by the temperature measuring device as the intake air temperature of the heating pipeline; the temperature measuring device is arranged on the ventilation equipment The designated position, the distance between the designated position and the inlet end of the heating pipeline is smaller than the distance between the outlet end of the heating pipeline and the inlet end of the heating pipeline;

The first determination module 302 is configured to determine the heating power of the heating pipeline according to the intake air temperature and the target temperature at the output end of the ventilation device;

The control module 303 is configured to heat the gas in the heating pipeline according to the heating power, so that the output end of the ventilation device provides gas at the target temperature.

Optionally, the device 30 also includes:

The second acquisition module is used for the first determination module 302 to obtain the temperature of the gas passing through the heating pipeline before determining the heating power of the heating pipeline according to the intake air temperature and the target temperature of the output end of the ventilation device. The required time is used as the gas heating time;

The first determination module 302 is specifically configured to: determine the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time to obtain a first loss value; according to the intake air temperature, the Calculate the temperature rise value of the gas in the heating pipeline according to the target temperature and the first loss value; determine the heating power of the heating pipeline according to the temperature rise value and the heating time of the gas.

Optionally, before determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time, the device further includes:

The third acquisition module is used for the first determination module 302 to acquire the ambient temperature of the ventilation device before determining the temperature loss value of the heating pipeline according to the intake air temperature and the gas heating time;

The first determination module 302 is specifically further configured to: determine the temperature loss parameter of the heating pipeline according to the gas heating duration; calculate the temperature loss value to obtain the first loss value.

Optionally, the first determining module 302 is further configured to: determine the temperature rise parameter of the heating pipeline according to the gas heating duration; calculate the heating value according to the temperature rise value and the temperature rise parameter. The heating power of the pipeline.

Optionally, the first determining module 302 is specifically further configured to: acquire heat loss parameters and pipeline insulation parameters of the heating pipeline, and gas insulation parameters of the gas in the heating pipeline; duration, the heat loss parameter of the heating pipeline and the pipeline insulation parameter, and the gas insulation parameter of the gas in the heating pipeline, and calculate the temperature loss parameter of the heating pipeline; wherein, the temperature loss parameter and the The gas heating time is positively correlated with the heat loss parameter, and the temperature loss parameter is negatively correlated with the pipeline heat preservation parameter and the gas heat preservation parameter.

Optionally, the first determination module 302 is specifically further configured to: acquire the internal energy increase parameters and external work parameters of the gas in the heating pipeline; It can increase parameters and external work parameters, and calculate the temperature rise parameter of the heating pipeline; wherein, the temperature rise parameter is positively correlated with the gas heating time and the internal energy increase parameter, and the temperature rise parameter is related to the External work parameters are negatively correlated.

Optionally, the device 30 also includes:

The second determination module is used to determine the temperature loss parameter of the interface device according to the gas heating time when the ventilation device further includes an interface device;

A calculation module, configured to calculate the temperature loss value of the interface device according to the intake air temperature, the ambient temperature, and the temperature loss parameter of the interface device, to obtain a second loss value;

The first determination module 302 is further configured to: calculate the temperature of the gas in the heating pipeline according to the intake air temperature, the target temperature, the first temperature loss value, and the second loss value. appreciation.

The present invention also provides a ventilator, which is equipped with the temperature control device as described above, and is used to implement the temperature control method as described above.

The present invention provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by the ventilation device, the steps of any one of the above temperature control methods are realized. As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, in order to streamline the present disclosure and to facilitate an understanding of one or more of the various inventive aspects, various features of the invention are sometimes grouped together in a single embodiment, figure, or in its description. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. Modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore may be divided into a plurality of sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method or method so disclosed may be used in any combination, except that at least some of such features and/or processes or units are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor can be used in practice to realize some or all functions of some or all components in the sorting device according to the present invention. The present invention can also be realized as a device or an apparatus program for performing a part or all of the methods described herein. Such a program for realizing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means can be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention. within the scope of protection.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

It should be noted that the various data-related processes in this embodiment of the application are all carried out under the premise of complying with the corresponding data protection laws and policies of the country where the device is located, and with the authorization granted by the corresponding device owner.

Claims (10)

1. A temperature control method, characterized by being applied to a ventilation apparatus including a temperature measuring device, an apparatus body, and a heating line, the method comprising:

acquiring the gas temperature of the air inlet end of the heating pipeline detected by the temperature measuring device as the air inlet temperature of the heating pipeline; the temperature measuring device is arranged at a designated position of the ventilation equipment, and the distance between the designated position and the air inlet end of the heating pipeline is smaller than the distance between the air outlet end of the heating pipeline and the air inlet end of the heating pipeline;

Determining the heating power of the heating pipeline according to the air inlet temperature and the target temperature of the output end of the ventilation equipment;

and heating the gas in the heating pipeline according to the heating power so that the output end of the ventilation equipment provides the gas with the target temperature.

2. The method of claim 1, wherein prior to determining the heating power of the heating circuit based on the intake air temperature and a target temperature at the ventilator output, the method further comprises:

acquiring the time length required by the gas passing through the heating pipeline as gas heating time length;

the determining the heating power of the heating pipeline according to the air inlet temperature and the target temperature of the output end of the ventilation equipment comprises the following steps:

determining a temperature loss value of the heating pipeline according to the air inlet temperature and the air heating duration to obtain a first loss value;

calculating a temperature rise value of the gas in the heating pipeline according to the air inlet temperature, the target temperature and the first loss value;

and determining the heating power of the heating pipeline according to the temperature rising value and the gas heating duration.

3. The method of claim 2, wherein prior to determining the temperature loss value of the heating circuit based on the intake air temperature and the gas heating duration, the method further comprises:

acquiring the ambient temperature of the ventilation equipment;

the determining the temperature loss value of the heating pipeline according to the air inlet temperature and the air heating duration to obtain a first loss value comprises the following steps:

determining a temperature loss parameter of the heating pipeline according to the gas heating duration;

and calculating the temperature loss value according to the air inlet temperature, the ambient temperature and the temperature loss parameter to obtain a first loss value.

4. A method according to claim 2 or 3, wherein said determining the heating power of the heating line from the temperature rise value and the gas heating period comprises:

determining a temperature rising parameter of the heating pipeline according to the gas heating duration;

and calculating the heating power of the heating pipeline according to the temperature rising value and the temperature rising parameter.

5. The method of claim 4, wherein said determining a temperature loss parameter of said heating circuit based on said gas heating duration comprises:

Acquiring heat loss parameters and pipeline heat preservation parameters of the heating pipeline and gas heat preservation parameters of gas in the heating pipeline;

calculating the temperature loss parameter of the heating pipeline according to the gas heating time, the heat loss parameter and the pipeline heat preservation parameter of the heating pipeline and the gas heat preservation parameter of the gas in the heating pipeline; wherein the temperature loss parameter is positively correlated with the gas heating duration and the heat loss parameter, and the temperature loss parameter is negatively correlated with the line soak parameter and the gas soak parameter.

6. The method of claim 4, wherein said determining a temperature rise parameter of said heating circuit based on said gas heating duration comprises:

acquiring an internal energy increasing parameter and an external acting parameter of the gas in the heating pipeline;

calculating the temperature rising parameter of the heating pipeline according to the gas heating time length, the internal energy increasing parameter and the external acting parameter of the gas in the heating pipeline; wherein the temperature rise parameter is positively correlated with the gas heating duration and the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work doing parameter.

7. The method of claim 2, wherein, in the case where the ventilation apparatus further comprises an interface device, the method further comprises:

determining a temperature loss parameter of the interface device according to the gas heating duration;

calculating a temperature loss value of the interface device according to the air inlet temperature, the ambient temperature and the temperature loss parameter of the interface device to obtain a second loss value;

the calculating a temperature rise value of the gas in the heating line according to the intake air temperature, the target temperature, and the first temperature loss value includes:

and calculating a temperature rise value of the gas in the heating pipeline according to the air inlet temperature, the target temperature, the first temperature loss value and the second loss value.

8. A temperature control device, characterized in that it is applied to ventilation equipment, the ventilation equipment includes temperature measuring device, equipment body and heating pipeline, and the device includes:

the first acquisition module is used for acquiring the gas temperature of the air inlet end of the heating pipeline detected by the temperature measuring device and taking the gas temperature as the air inlet temperature of the heating pipeline; the temperature measuring device is arranged at a designated position of the ventilation equipment, and the distance between the designated position and the air inlet end of the heating pipeline is smaller than the distance between the air outlet end of the heating pipeline and the air inlet end of the heating pipeline;

The first determining module is used for determining the heating power of the heating pipeline according to the air inlet temperature and the target temperature of the output end of the ventilation equipment;

and the control module is used for heating the gas in the heating pipeline according to the heating power so as to enable the output end of the ventilation equipment to provide the gas with the target temperature.

9. A ventilator, characterized in that it is equipped with a temperature control device according to claim 8 for performing the temperature control method according to any one of claims 1-7.

10. A readable storage medium, characterized in that it has stored thereon a program or instructions which, when executed by a ventilator, implement the steps of the temperature control method according to any of claims 1-7.

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