JPH04268146A - Control device for air conditioner - Google Patents

Abstract

PURPOSE:To realize it with a simple operation that a comfortable state can be attained in reference to humidity, a flow speed of air flow, an amount of cloth, an amount of activity, a radiation temperature and a room temperature or the like. CONSTITUTION:A PMV value indicating a comfortable characteristic of air conditioned environment determined by humidity, a flow speed of air flow, an amount of cloth, an amount of activity, a radiation temperature and a room temperature is expressed by a primary expression of a radiation temperature (tr) and a room temperature (ta) and then the PMV value is set to a desired numerical value. The radiation temperature (tr) of a room to be air conditioned is detected and then an air conditioner is controlled with a room temperature got by substituting the detected radiation temperature (tr) as well as the aforesaid set PMV value for the aforesaid being applied as the room temperature target value. Mere controlling of the room temperature at the air conditioner realizes a comfortable condition with humidity, flow speed of air flow, an amount of cloth and an amount of activity or the like being considered.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner, and more particularly to a control device for an air conditioner that controls the air conditioner to provide a comfortable air-conditioned environment without performing complicated operations.

0002

BACKGROUND ART Conventionally, as described in Japanese Patent Application Laid-open No. 55-95054, in an air conditioner that regulates indoor temperature and humidity, the body surface temperature of a person in the room is used as a control index for the temperature and humidity. is indirectly detected by an infrared temperature sensor, and also detects the wall temperature of the room mentioned above.If the wall temperature is abnormally low, the room temperature is raised slightly, and the temperature is set to a slightly higher temperature to compensate for the cold and warm radiation from the wall. In this case, it is known to control the body surface temperature to 32 to 33° C. by lowering the temperature slightly. Also, JP-A-6
The technology described in Publication No. 3-14028 includes a temperature detector that detects room temperature and sensory switches that are operated when the user feels hot and when the user feels cold. Change the set temperature when
The purpose is to control the indoor temperature to a comfortable state with a small number of sensory switch operations in accordance with the user's senses. Furthermore, the technology described in Japanese Patent Application Laid-Open No. 63-131942 includes a detection means for detecting information representing the environmental state of an air conditioner, and a control rule based on empirical rules for determining the amount of operation of the air conditioner based on the information. and a calculation means for calculating a manipulated variable to be applied to the air conditioner by fuzzy logical operation based on the information detected by the detection means and the control rule retrieved from the memory, Instead, air conditioners are controlled precisely based on information representing various environmental conditions in accordance with the air conditioning comfort level of the person.

0003

[Problem to be solved by the invention] The above-mentioned Japanese Patent Application Laid-open No. 1983-1995
The conventional technology described in Publication No. 054 has a body surface temperature of 32 to
In order to maintain a comfortable temperature range of 33℃,
The room temperature is made slightly higher or lower to compensate for the effects of cold and warm radiation from the wall, but the body surface temperature range mentioned above is extremely narrow, and the temperature of the wall is transiently abnormal. An important technical issue is how much room temperature should be compensated for in certain situations. Since quantitative and specific guidelines regarding this issue have not been provided, it is not clear whether a comfortable environmental condition can actually be obtained. Furthermore, in order to achieve the above-described control, it was necessary to select a large-capacity air conditioner and install expensive control equipment. The technology described in the above-mentioned Japanese Patent Application Laid-open No. 63-14028 is as follows:
Since the control index for achieving comfort is completely dependent on the individual, it is questionable whether everyone in the room will feel comfortable. In addition, in order to constantly obtain highly accurate comfort, the user must repeatedly operate the sensory switch. Particularly when the number of people in the room increases or the outside temperature rises, causing a large disturbance to the air-conditioned environment, frequent inputs of the sensory switch may be required, making it inconvenient to use. Furthermore, the technique described in Japanese Patent Application Laid-Open No. 131942/1983 discusses the application of a general method for controlling the environmental condition of an air conditioner to a predetermined value, and this method itself is a known technology. . Furthermore, the details of the control rules for achieving comfortable air conditioning are not described.

An object of the present invention is to control an air-conditioned object to a comfortable environmental condition with a small number of operations.

[0005]

[Means for solving the problem] The above problem is solved by determining the air flow rate, humidity, amount of clothing, activity level, room temperature, and radiation temperature that define the PMV value of an air-conditioned environment. Select, measure, or set the amount of activity, use these values to express the PMV value as a linear function of room temperature and radiation temperature, set the PMV value of the linear function to a value corresponding to the target comfort state, and The radiation temperature of the environment is detected, the room temperature is calculated from the detected radiation temperature and the linear function set with the PMV value corresponding to the target comfort state, and the calculated room temperature is set as the room temperature target value, and the air temperature is This is achieved by an air conditioner control method that controls the conditioner.

[0006] The above problem is also solved by setting the upper and lower limits of the room temperature in advance, comparing the calculated room temperature target value with the upper and lower limits, and if the room temperature target value is higher than the upper limit, the room temperature is This can also be achieved by the method for controlling an air conditioner according to claim 1, wherein the target value is modified to be equal to or less than the upper limit value, and when the target value is lower than the lower limit value, the target value of room temperature is modified and set to equal to or more than the lower limit value.

[0007] The above problem is also achieved by storing the set room temperature target value, calculating the deviation between the set room temperature target value and the stored room temperature target value in the next sampling period, and calculating the deviation between the set room temperature target value and the stored room temperature target value in the next sampling period. This can also be achieved by the method of controlling an air conditioner according to claim 1 or 2, in which, when the limit deviation is exceeded, the room temperature target value is corrected and set so that the deviation becomes equal to or less than the limit deviation.

[0008] The above-mentioned problem also arises in a control device for an air conditioner that air-conditions a room that emits radiant temperature. It is configured to include a radiation temperature detector that measures radiation temperature, and a calculation controller that performs calculation processing using these detected values as input values and controls the air conditioner to adjust the room temperature. a target value calculation means 11 that includes a built-in formula expressed as a linear function of room temperature and radiation temperature, and calculates a room temperature target value using the formula and the radiation temperature detected by the radiation temperature detector; and the target value calculation means subtraction means for calculating the deviation between the room temperature target value output by the room temperature sensor 11 and the room temperature output from the room temperature detector; and a PID calculation means for receiving the output of the subtraction means, performing a PID calculation and outputting it as a manipulated variable. This can also be achieved by including and configuring.

[0009] The above problem is also solved by the control device including at least a movable remote control device for starting/stopping the air conditioner and/or increasing/decreasing the output, and the room temperature detector and/or radiation temperature detector being connected to the remote control device. This is also achieved by the air conditioner control device according to claim 4, which is installed in the device.

[0010] The above problem is also solved in claim 4, wherein the radiation temperature detector is mounted so that the direction of its heat receiving surface can be changed.
This can also be achieved by the air conditioner control device described in .

[0011] The above-mentioned problem is also solved because the arithmetic controller is equipped with a keyboard, and the PMV value of the formula expressing the built-in PMV value as a linear function of room temperature and radiation temperature and/or constants included in the formula can be input via the keyboard. This can also be achieved by the air conditioner control device according to any one of claims 4 to 6, which is configured to be rewritable.

The above problem is also solved by the control device for an air conditioner according to any one of claims 4 to 7, wherein the control device is provided with display means for displaying the set PMV value, room temperature, and radiation temperature. It is also achieved by

The above object is further achieved by the air conditioner control device according to claim 8, wherein the display means is provided in the remote control device.

[0014]

[Operation] The target comfortable state defined by humidity, airflow speed, amount of clothing, amount of activity, room temperature, and radiant temperature is approximately expressed by a PMV value determined by a linear function of room temperature and radiant temperature. When the PMV value indicating the target comfortable state is set and the detected radiation temperature is input, the control device calculates the room temperature target value that should be achieved in order to realize the target comfortable state at that point from the linear function. . The control device then calculates the deviation between the calculated room temperature target value and the room temperature input from the room temperature detector,
The air conditioner is controlled so that this deviation falls within a predetermined range. This operation is repeated at a predetermined sampling period, and the room temperature target value is set while taking into account the radiation temperature that changes with changes in the room temperature. If the deviation between the room temperature input from the room temperature detector and the calculated room temperature target value is within a predetermined range, the target comfortable state is achieved, including conditions such as humidity, airflow speed, amount of clothing, amount of activity, etc. be done.

[0015]

[Example] The comfort of the air-conditioned environment is
PMV (Predictive) devised by
The standard is to evaluate based on the magnitude of e.g.
7 years). According to this, room temperature, flow velocity, radiation temperature, and humidity are considered as thermal environmental factors.
The amount of activity and amount of clothing are considered as human factors. The specific calculation formula is shown below. Further, an example of the calculated results is shown in FIG. Figure 5 shows PM
When V=0, the relationship between radiation temperature and air temperature is shown when the flow velocity and amount of activity are changed, assuming humidity and amount of clothing.

[0016]

[Math 1]

[0017] Here, M: metabolic rate per body surface area = activity level (w/m
2) 58w/m2=1met w: External work (0 in most cases) Icl: Thermal resistance of clothing = amount of clothing (m2℃
/w) 0.155m2℃/w=1clo fcl: Ratio of surface area when clothed to naked skin surface ta: Air temperature = room temperature
(℃) tr: Average radiation temperature
(°C) tcl: Clothes surface temperature (
°C) Var: relative wind speed
(m/s)pa: water vapor partial pressure (
pa) hc: convective heat transfer coefficient
(w/m2℃) Parameter applicable range M = 46~232w/m2 (
0.8~4met)Icl=0~0.310 m2℃
/w (0~2clo)ta =10~30
°C tr =10~40 °C Var=0~1 m/spa =0
~2700 patcl, hc is determined by repeated calculations.

[0018] This PMV value is related to comfort as described below. Generally, many people feel comfortable if the PMV value is 0, approximately within ±0.5. However, since the above relationship is evaluated under standard conditions, it is necessary to select or set an appropriate PMV value in consideration of environmental heterogeneity, resident preferences, transient fluctuations, etc. The present invention quantitatively expresses a target air conditioning environment using this PMV value, and also uses the PMV value expressed quantitatively.
The air conditioner is controlled so that the value is achieved.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a conceptual diagram showing an air conditioning environment to which the air conditioner control device of the present invention is applied. Air conditioner 2 is
The outdoor unit is composed of an indoor unit 3 installed in a room 1 equipped with walls, floors, ceilings, windows, etc., an outdoor unit 4 placed outside the room 1, and piping 5 connecting these. The heat absorption amount or heat generation amount of 4 is supplied to the indoor unit 3, and the room temperature of the room 1 is adjusted according to the heat generation amount or heat absorption amount of the indoor unit 3 to maintain a comfortable air-conditioned environment for the occupant 6. The control device for the air conditioner 2 includes a room temperature detector 7 that is attached to the indoor unit 3 and measures the room temperature of the room 1, and a radiation temperature detector 8 that is also attached to the indoor unit 3 and measures the radiant temperature of the room 1. and an arithmetic controller 9 that inputs these detected values and performs arithmetic processing to be described later to control the air conditioner 2 and adjust the room temperature. The radiation temperature detector 8 is configured such that the direction of its heat receiving surface can be changed freely. The radiation temperature detector 8 and the room temperature detector 7 are not attached to the indoor unit 3, but are attached to a so-called remote control device that is separate from the indoor unit 3 and remotely controls the starting/stopping of the air conditioner and the increase/decrease of the output. You can leave it there.

First, a target PMV value is determined in advance. Generally, it is desirable that the target PMV value is 0 (zero), but it is not necessarily comfortable if the PMV value is zero. For example, there are people's preferences such as warm or cool, and conditions such as work rooms and rest rooms, so these conditions can be set from outside the arithmetic controller, and the target PMV value can be set according to the settings. Correct. Also, depending on the season, it may be better to make it a little warmer or cooler, so this can be set from outside the arithmetic controller, and the target PMV value can be adjusted accordingly. do. Also, depending on whether it is during startup or steady operation, it may be better to make it a little warmer or cooler, so make sure that this can be determined with a timer etc. Correct the target PMV value. Furthermore, this PMV value can also be changed while the air conditioner is operating. The determined PMV value is set in the arithmetic controller 9.

Next, among the six parameters defining the PMV value, other parameters except room temperature are selected, set, or measured. The radiation temperature tr is detected by the radiation temperature detector 8 and inputted to the arithmetic controller 9. The radiant temperature detector 8 is of a type that measures the average radiant temperature determined by heating a heat receiving plate by radiant heat from walls and floors. The airflow velocity (relative wind velocity) Var is detected by a flow velocity detector. The flow rate detector used is one that measures the temperature drop due to airflow through a thermocouple or thermistor. However, since the airflow within the room 1 is predominantly generated by the indoor unit 3, the flow rate may be automatically selected based on the operating state of the air conditioner 2. The water vapor partial pressure pa is determined using the humidity RH and a predetermined moist air characteristic equation. Humidity RH is detected by a humidity detector. The humidity detector used is one that measures resistance changes due to humidity of the object to be detected. On the other hand, since the humidity is almost determined by the operating state of the air conditioner 2, the humidity can be automatically selected based on the operating state of the air conditioner 2. The amount of clothing Icl is determined based on the guideline that the thermal resistance equivalent to three-piece clothing for men is 1 clo = 0.155 m2℃/w.
(same below) determines and sets. Also, since the amount of clothing is determined by the season, the season is determined by a timer,
The amount of clothing Icl can also be estimated from this. Since the amount of clothing is also determined by the outside temperature, the amount of clothing Icl can be estimated from the outside temperature detected by the outside temperature detector. The activity level M is determined and set by the resident based on the standard that the metabolic rate per body surface area during work in a rest chair is 1met=58w/m2. on the other hand,
Since the amount of activity is determined by the time, it is also possible to determine the time using a timer and estimate the amount of activity M from this. It is also possible to measure the amount of change in infrared rays emitted by residents using an infrared sensor, and estimate the amount of activity from this.

As explained above, the PMV value and PMV
Of the six parameters that determine the values, five except the air temperature ta are selected, set, or measured, so the equation 1 above is satisfied.
By using , the air temperature ta can be determined. This air temperature ta is determined to achieve the target comfortable state under the condition that the five parameters and the PMV value cannot be easily adjusted by the operation of the air conditioner 2 or are determined by the condition of the occupant 6. This can be regarded as the necessary target value ts of room temperature. That is, when the room temperature reaches this target value ts, P corresponding to the target comfortable state
The MV value is obtained. The arithmetic control section 9 includes means for selecting, setting, or measuring five of the PMV value and the six parameters that determine the PMV value, excluding the air temperature ta, and a means for calculating the air temperature ta by performing the calculation of Equation 1. A means for setting the room temperature target value ts, and a means for determining that the deviation is within a predetermined range based on the deviation between the room temperature target value ts and the air temperature ta (room temperature input from the room temperature detector 7) which is the actual room temperature at that time. By controlling the air conditioner 2 with a means for outputting a manipulated variable signal to the air conditioner 2 so that

By the way, equation 1 for calculating the PMV value
is a complicated calculation, and is often difficult to process in a control device attached to an ordinary air conditioner. Therefore,
By using the detected value only for the radiation temperature that has the greatest influence on comfort, and setting appropriate values for the relative wind speed Var, humidity RH for calculating the water vapor partial pressure, activity level M, and amount of clothing Icl, the equation 1 can be obtained. has been simplified. In general, the target comfortable state and the operating environment conditions of the air conditioner 2 can be categorized into several types, so the PMV value and relative wind speed Va
r, humidity RH for calculating water vapor partial pressure, activity amount M,
An appropriate value can be selected in advance for the parameter of the amount of clothing Icl. For example, if the PMV value is set to 0 and the relationship between the radiation temperature tr and the room temperature ta is approximated to be a linear function, then the equation showing the PMV value in Equation 1 can be expressed as the following equation with k1, k2, and k3 as constants. Ru.

[0024]

[Equation 2] 0=k1tr+k2ta+k3 Equation 2 above indicates that when certain values are selected for the parameters of relative wind speed Var, humidity RH for calculating water vapor partial pressure, activity level M, and amount of clothing Icl, the PMV value becomes zero. It shows the relationship between the radiation temperature tr and the air temperature ta required to realize a comfortable state such as can be obtained. This air temperature ta achieves the target comfortable state under the condition that the other five parameters and the PMV value cannot be easily adjusted by the operation of the air conditioner 2 or are determined by the condition of the occupant 6. This can be seen as the room temperature target value ts required for That is, Equation 2 can be rewritten into the following Equation 3 by setting the air temperature ta as the room temperature target value ts.

[0025]

[Math. 3] 0 = k1tr + k2ts + k3t
s=-(k1tr+k3)/k2 If the room temperature is set to this room temperature target value ts, the PMV value corresponding to the target comfortable state can be obtained. The air conditioner 2 may be controlled based on the difference between the actual room temperature ta and the actual room temperature ta at that time, so that the room temperature ta becomes the room temperature target value ts. As mentioned above, if the PMV value is not zero but a value biased toward the + or - side and the state corresponding to that value is the target comfortable state, in Equation 3, the constant k1, By correcting k2 and k3,
The corrected target value of room temperature can be easily obtained. Corrected room temperature target value ts is obtained in the same manner for other parameter deviations.

FIG. 1 shows an example of the calculation procedure of the calculation controller 9. The case where the PMV value is set to 0 will be described below. First, in step 11, the radiation temperature tr detected by the radiation temperature detector 8 and the room temperature ta detected by the room temperature detector 7 are input and A/D converted. Next, in step 12, the inputted radiant temperature tr is substituted into Equation 3, which is stored in advance as a program, to calculate the room temperature target value ts at that point. If this target room temperature value becomes excessive, the air conditioner may operate under overload, which may lead to reliability problems or cause occupants to become uncomfortable due to rapid temperature changes. In order to avoid this, the upper and lower limits of the room temperature target value are determined in advance, and the calculated room temperature target value ts is determined in step 13.
is compared with the upper limit value and the lower limit value, and if it is larger than the upper limit value, the room temperature target value ts is lowered to the upper limit value, and if it is lower than the lower limit value, it is adjusted to the lower limit value. Also, steps 11 and 12
The calculation of the room temperature target value ts by As in some cases, air conditioners can become overloaded, causing reliability problems, and rapid temperature changes can even make occupants uncomfortable. Therefore, in step 14, the difference between the calculated room temperature target value (if changed in step 13, the changed room temperature target value) and the previously set target value is calculated, and the difference is set to a predetermined value. If the difference is larger than the predetermined value, the target value is corrected so that the difference becomes the predetermined value. . This revised target value is the target value of the room temperature for realizing the target comfortable state at that time. Next, in step 15, the deviation between this target value of the room temperature and the current room temperature ta input in step 11 is determined. In step 16, PID calculation is performed on the deviation to determine the operation amount S for controlling the air conditioner, and output it to the drive unit of the air conditioner. Thereby, the air conditioner is controlled so that the room temperature ta at that time becomes the target value ts. Steps 11 to 16 are repeated at predetermined sampling intervals by the microcomputer built into the arithmetic controller 9, as described above.

FIG. 3 shows an example of a block diagram of the arithmetic controller 9 that performs the arithmetic operations shown in FIG. This arithmetic controller 9 includes an A/D converter 30 that receives the radiation temperature tr and room temperature ta, which are the detection signals of the radiation temperature detector 8 and the room temperature detector 7, and converts them into digital signals (step 11 in FIG. 1). , the A/D
A target value calculation means 31 receives the radiation temperature tr output from the converter 30 and performs the calculation of Equation 3 (step 12 in FIG. 1), and receives the output of the target value calculation means 11 and corrects the target value (see FIG. a target value modifying means 35 that performs steps 13 and 14); and receiving the output of the target value modifying means 15 and the A/D converter 3.
Calculate the deviation from the room temperature ta output by 0 (Step 15 in Figure 1)
), and receives the output of the subtraction means 32, performs PID calculation, and outputs it as the manipulated variable S (step 16 in FIG. 1).
), and a D/A converter 34 that converts the output of the PID calculation means 33 into D/A and transmits the D/A converter 34 to the air conditioner 2. The target value calculation means 31 is provided with a keyboard for setting the PMV value and constants k1, k2, k3. In addition, signals from sensory switches such as warm or cool are also input, and these signals are used to calculate the target value calculation means 3.
The PMV values and coefficients of Equation 3 built into 1 are rewritten. Note that in FIG. 3, the A/D converter 30 is at room temperature t.
Although two units are described, one for a and the other for radiation temperature tr, it is also possible to use one unit for both purposes. With reference to FIG.
The procedure will be specifically explained using heating as an example.

FIG. 4 shows the air-conditioned environment with room temperature ta on the horizontal axis and radiation temperature tr on the vertical axis, where the above PMV value=
The number 3, which is a condition for realizing the state of 0, is represented by a straight line A. However, as mentioned above, the relative wind speed Var,
The parameters of humidity RH, amount of activity M, and amount of clothing Icl are each set to a certain value and are set as constants. In other words, if the room temperature ta and the radiation temperature tr are on the straight line A, the air-conditioned environment is in the target comfortable state. Also, the temperature t
s0 is an upper limit value determined from the viewpoint of normal operation of the air conditioner and comfort of occupants.

It is assumed that at a certain point in time (state 1) during operation of the air conditioner, the values detected by the room temperature detector 7 and the radiation temperature detector 8 are the room temperature ta1 and the radiation temperature tr1. Since the target state is the straight line A and the radiation temperature tr1 is not controlled, the room temperature may be set to the room temperature ts1 at the point where the radiation temperature tr1 line intersects the straight line A to obtain the target state. That is, the room temperature target value ts1 is calculated using Equation 3. Next, this room temperature target value ts1 is compared with the upper limit value ts0. ts1>
Since it is ts0, it is found that the target value at this point is excessive, and the room temperature target value ts1 is revised downward to ts0.

The air conditioner is controlled using this ts0 as the room temperature target value, and the room temperature ta1 increases. As the room temperature rises, the wall surface warms and the radiation temperature rises, and the detected values in the next sampling period (state 2) become the room temperature ta2 and the radiation temperature tr2. The target room temperature in state 2 is the temperature ts2 at the point where the radiation temperature tr2 line intersects the straight line A.
It is. When the obtained temperature ts2 is compared with the upper limit value ts0, ts0>ts2, so in this case there is no need to correct the target value. Next, the difference Δt2 between the previous revised target value ts0 and the current target value ts2 is calculated and compared with a preset limit deviation Δt0. If Δt2<Δt0, control is performed using the target value ts2, and if Δt2>Δt0, control is performed by setting ts0−Δt0 as the corrected room temperature target value ts2.

The air conditioner is controlled using this ts2 as the room temperature target value, the room temperature ta2 further rises, and the detected values in the next sampling period (state 3) are the room temperature ta3 and the radiation temperature tr3. This state 3 is on the straight line A, and the target comfortable state has been achieved. The arithmetic controller 9 calculates the room temperature target value ts3 calculated from the input radiation temperature tr3 and the room temperature ta input from the room temperature detector 7.
3 is calculated, and since the deviation is within a predetermined range, it is known that the target state has been reached, and the air conditioner is commanded to stop or reduce its output.

In this state, if the resident requests, for example, a warmer air-conditioned environment, the PMV value changes and the target state changes from straight line A to, for example, straight line B, and state 3 is not a comfortable state where the target has been achieved. It disappears. The arithmetic controller 9 is
Room temperature target value ts calculated from radiation temperature tr3 and straight line B
3' and the input room temperature ta3 are calculated, and the air conditioner is controlled toward the room temperature target value ts3'. The above procedure is repeated until the room temperature and radiation temperature are on straight line B.

The above has described the operation of this embodiment during heating, which is applied when one room is heated and cooled by one air conditioner, but basically the same operation is performed during cooling. Furthermore, the above embodiment is for the case where one room is heated and cooled by one air conditioner, but when multiple rooms are cooled and heated by one air conditioner, one room is heated and cooled by multiple air conditioners. The same applies to heating and cooling, or a combination thereof.

According to this embodiment, by simplifying the calculation formula for the PMV value and detecting and inputting the radiant temperature, the room temperature necessary to achieve a comfortable state including conditions such as humidity and amount of clothing can be obtained. Since the air conditioner is controlled to achieve the room temperature, a comfortable state can be achieved with a simple operation. In addition, the room temperature target value is corrected so that the room temperature target value and the amount of change in the room temperature target value do not exceed a predetermined value, so excessive loads on the air conditioner and sudden changes in output can be avoided. , without impairing the reliability of the air conditioner. At the same time, sudden changes in room temperature were avoided, reducing the discomfort caused to residents by sudden changes in room temperature. In the above embodiment, the set PMV value is not displayed, but the PMV value, radiant temperature, room temperature, room temperature target value, etc. can be displayed on the remote control device, for example, so that the resident can easily check the PMV value, radiation temperature, room temperature, room temperature target value, etc. It is good to have a means in place.

[0035]

[Effects of the Invention] According to the present invention, by using the formula for calculating the PMV value, which has been established as a comfort evaluation standard, or an approximate formula thereof, comfort can be quantitatively evaluated, and [the effect on comfort] By controlling the room temperature, we were able to achieve a comfortable state that included other factors. Residents can enjoy a comfortable air-conditioned environment without being aware of other factors that affect comfort and without having to perform any troublesome operations.

[Brief explanation of the drawing]

FIG. 1 is a procedure diagram showing an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing an air-conditioned environment to which an embodiment of the present invention is applied.

FIG. 3 is a block diagram showing the main configuration of an embodiment of the present invention.

FIG. 4 is a conceptual diagram illustrating the operation of the embodiment of the present invention.

FIG. 5 is a graph showing an example of a calculation result of a PMV value.

[Explanation of symbols]

1 Room 2 Air conditioner 3 Indoor unit 4 Outdoor unit 5 Piping 6 Resident 7 Room temperature detector 8. Radiation temperature detector 9 Arithmetic controller 30 A/D converter 31 Target value calculation means 32 Subtraction means 33 PID calculation means 34 D/A converter 35 Target value correction means

Claims (1)

[Scope of Claims] [Claim 1] Among the airflow velocity, humidity, amount of clothing, amount of activity, room temperature, and radiation temperature that define the PMV value of an air-conditioned environment,
Select, measure, or set the airflow velocity, humidity, amount of clothing, and activity level, use these values to express the PMV value as a linear function of room temperature and radiation temperature, and set the PMV value of the linear function to the target comfortable state. The corresponding value is set and the radiation temperature of the air conditioned environment is detected, and the room temperature is calculated from the detected radiation temperature and the linear function in which the PMV value corresponding to the target comfort state is set. [Claim 2] An upper limit value and a lower limit value of the room temperature are set in advance, and the calculated room temperature target value is set as the upper limit value and the lower limit value. If the target room temperature value is higher than the upper limit value, the target room temperature value should be corrected to below the upper limit value, and if it is lower than the lower limit value, the target room temperature value should be corrected and set to be above the lower limit value. 3. A method for controlling an air conditioner according to claim 1, characterized in that the set room temperature target value is stored, and the set room temperature target value and the stored room temperature target value are combined in the next sampling period. A deviation is calculated, and if the deviation exceeds a preset limit deviation, the room temperature target value is corrected and set so that the deviation becomes equal to or less than the limit deviation. Control method for an air conditioner [Claim 4] A control device for an air conditioner that air-conditions a room that emits radiant temperature, the control device comprising: a room temperature detector that measures the room temperature in the room; It is composed of a radiation temperature detector that measures temperature, and a calculation controller that uses these detected values as input values to perform calculation processing and controls the air conditioner to adjust the room temperature. , a target value calculation means 11 which has a built-in formula expressing the PMV value as a linear function of room temperature and radiation temperature, and calculates a room temperature target value using the formula and the radiation temperature detected by the radiation temperature detector.
and subtraction means for calculating the deviation between the room temperature target value outputted by the target value calculation means 11 and the room temperature outputted from the room temperature detector, and performing a PID calculation on the output of the subtraction means and outputting it as a manipulated variable. A control device for an air conditioner, characterized in that it is configured to include a PID calculation means.Claim 5:
The control device includes at least a movable remote control device for starting/stopping the air conditioner and/or increasing/decreasing the output, and the room temperature detector and/or radiation temperature detector is installed in the remote control device. A control device for an air conditioner according to claim 4, characterized in that: [Claim 6]
The air conditioner control device according to claim 4, wherein the radiation temperature detector is mounted so that the direction of its heat receiving surface can be changed.Claim 7: The arithmetic controller includes a keyboard. , the built-in PMV value of a formula expressed as a linear function of room temperature and radiation temperature and/or a constant included in the formula can be rewritten via the keyboard. 6. The control device for an air conditioner according to claim 6.Claim 8. The control device includes display means for displaying the set PMV value, room temperature, and radiation temperature.Claim 4. 9. The air conditioner control device according to claim 8, wherein the display means is provided in a remote control device.Claim 10 ]