JPH0567855B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air conditioner that can provide a comfortable environment according to the user's wishes, and in particular, the present invention relates to an air conditioner that can provide a comfortable environment according to the user's wishes. This invention relates to an air conditioner that can automatically change the set temperature according to the thermal sensation.

[Conventional technology]

FIG. 10 is a control block diagram of a conventional heat pump type air conditioner disclosed in, for example, Japanese Patent Laid-Open No. 137029/1983. In the figure, 101 is an operation switch, 102 is a semiconductor temperature-sensitive resistance element such as a thermistor that senses the room temperature of an air-conditioned room (not shown), and 103 is a digital signal that converts the voltage value of the resistance element 102 that changes depending on the room temperature. An A/D (analog/digital) converter for conversion, 104 a set temperature setting device for the air-conditioned room, and 105 an LSI that detects the turning on of the operation switch 101 and operates based on a predetermined program (not shown). A microcomputer 106 is a compressor whose start/stop is controlled by the microcomputer 105. The microcomputer 105 reads the output value of the A/D converter 103 at a predetermined period, and uses a room temperature storage device 107 that stores this as room temperature data, and an increase/decrease signal from the setting device 104 based on a predetermined center value. A set temperature storage device 10 that stores a value that is increased or decreased within a predetermined range from the median value as set temperature data.
8, and a comparator 109 that compares the set temperature T _S of the storage device 108 with the room temperature data _TR of the storage device 107 and issues a “1” (operation) or “0” (stop) signal to the compressor 106. has been done.

Next, the operation will be explained. Driving switch 10
1, the microcomputer 105
starts operating, and comparator 109 reads room temperature data.
A comparison is made between T _R and the customer's desired set temperature T _S. For example, if T _R <T _S , the comparator 109
supplies an operating signal to the compressor 106. Therefore, the air conditioner starts the heat pump heating operation using the compressor 106. Therefore, the room temperature rises and approaches the set temperature T _S. Room temperature data T _R
When the temperature exceeds the set temperature _TS , the comparator 109 issues a stop command to the compressor 106, and the air conditioner stops heating operation. Then the room temperature drops,
When T _R < _TS , an operation command is issued to the compressor 106 and this is repeated, so the air conditioner intermittently performs heat pump heating to maintain the room temperature approximately near the set temperature T _S.

[Problem that the invention seeks to solve]

In conventional air conditioners such as those described above, the room temperature is controlled by specifying the set temperature using the setting device 104. Therefore, the user cannot directly input the thermal sensation of "hot" or "cold"; There was a problem in that when the user felt ``hot'' or ``cold,'' the thermal sensation had to be replaced with the set temperature and input accordingly.

This invention was made to solve the above-mentioned problems, and by directly inputting the user's thermal sensation of "hot" or "cold" by operating a switch, it automatically creates a comfortable environment. The purpose is to provide an air conditioner that can be obtained.

[Means for solving problems]

The air conditioner according to the present invention has a plurality of input switch sections that express the user's thermal sensations of "hot" and "cold," and the input signals of the switch sections and the detection of the indoor temperature detector are provided. The device is equipped with a set temperature determining means for determining the set temperature based on a signal, and a change control means for changing the temperature of the blown air in accordance with the thermal sensation.

[Effect]

In this invention, when the thermal sensation input switch that matches the user's thermal sensation is turned on, the set temperature determining means sets the temperature within the room based on the room temperature detected by the temperature detector in accordance with the input of the thermal sensation switch. The set temperature is automatically changed, and at the same time, the blowing air temperature change control means is activated, so that the blowing air temperature does not change when the user is cold.
Make changes to alleviate the sensation of feeling hot. This makes it possible to automatically provide a comfortable environment that meets the user's wishes.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a first embodiment of the air conditioner according to the present invention, FIG. 1 is a block diagram of the entire control system, FIG. 2 is a front view of the input switch section, and FIG. 3 is a block diagram of the entire control system. A flowchart showing the operation of the control system, and FIG. 4 is a greenhouse change characteristic diagram.

In FIG. 1, reference numeral 10 denotes a microcomputer equipped with a function of determining a set temperature according to the thermal sensation of the user and a function of temporarily controlling indoor ventilation.
Input circuit 12 and memory 13 connected to CPU 11
and an output circuit 14. Above input circuit 1
2 is connected to an A/D converter 103 that converts a voltage value that changes depending on the room temperature of a semiconductor temperature-sensitive resistance element 102 such as a thermistor that senses the room temperature of an air-conditioned room into a digital signal, as in the conventional case. An input switch 15 representing thermal sensation is connected, and as shown in FIG. 2, the input switch 15 is composed of a "hot" switch 15a and a "cold" switch 15b. Also connected to the output circuit 14 are a compressor 106 whose startup and stop are controlled by future output signals, and an indoor fan motor 16 whose rotation is controlled.

Next, the operation of this embodiment configured as described above during heating will be explained according to the procedure shown in the flowchart of FIG.

First, when the operation switch 101 is turned on, the microcomputer 10 starts operating and the program shown in FIG. 3 starts. As a result, first, in step 31, the initial setting temperature T _S0 (see Figure 4) is set.
is set. In the next step 32, the room temperature _TR detected by the temperature-sensitive resistance element 102 is taken into the microcomputer 10 through the A/D converter 103. Then, in the next step 33, the set temperature T _S0 and the room temperature T _R are compared, and T _R < T _S0
It is determined whether or not. Here, when it is determined that T _R <T _S0 , the process moves to step 34, where an ON command is output from the output circuit 14 to the compressor 106, and also, if T _R <T _S0 is not established, that is, T _R > T _S0 When it is determined that this is the case, the process proceeds to step 35, where an off command is given to the compressor 106, and the compressor is controlled on and off in accordance with the operating mode.

In FIG. 3, steps 36 to 40 show the processing flow for determining the set temperature. In step 36, the temperature difference between the initial set temperature T _SO and the room temperature _TR is a constant value ΔT ₀
This is to judge whether T _S0 −T _R <
If it is not ΔT ₀ , that is, it exceeds the region of ΔT ₀ , the process returns to step 32, and if it is determined that T _S0 −T _R <ΔT ₀ , that is, it is in the region of ΔT ₀ , the process proceeds to step 37.
It is determined whether there is an input to the switches 15a, 15b. If it is determined that there is a switch input here,
Proceed to step 38 and turn "when it's cold" switch 15
Input b or “when it’s hot” switch 15
Determine whether input is a. If it is determined in step 38 that the "when it is cold" switch 15b has been input, the process moves to step 39, where the set temperature T _S1 (see Figure 4) is set to a constant value based on the room temperature T _R at that time. , for example, execute the process of raising it by 2 degrees. Also,
When it is determined that the "when it is hot" switch 15a has been input, the process proceeds to step 40, where the set temperature T _S1 is changed to the room temperature T _R
A process is executed to lower the value by a certain value, for example, 2 degrees, and the process returns to step 32.

Further, in FIG. 3, steps 41 to 44 are a flow for indoor fan control, and in step 41, the number m of output steps of the fan motor 16 is set to m-1 by -1, for example, and the indoor fan ( (not shown). Then, in the next step 42, a timer configured by software in the microcomputer 10 is started, and in the next step 43, it is determined whether the timer has elapsed for a certain period of time, for example, 3 minutes. When the timer determines that 3 minutes have elapsed, the fan motor 16
The control for reducing the number of output steps of the fan motor 16 is completed, and in step 44, the number of output steps of the fan motor 16 is added by the number reduced in step 41.
The number of output steps of the fan motor 16 is restored to its original value.

In this way, during heating operation of the air conditioner,
"When it's cold" when the user feels "cold"
When the switch 15b is turned on, the set temperature is automatically raised by 2 degrees, and the pressure (temperature) of the heat exchanger (not shown) increases by reducing the air blowing capacity of the indoor fan. , the temperature of the blown air increases, thereby eliminating the user's "cold" feeling and immediately providing a comfortable feeling.

On the other hand, from the next operation after the switch 15 is operated, the compressor 106 is controlled on and off according to the procedure from step 32 shown in FIG. 3 at the changed set temperature, and the room temperature is set. The indoor air conditioning environment is controlled to match the temperature T _S1 .

FIG. 4 is a room temperature change characteristic diagram when heating operation is performed based on this embodiment. Heating operation starts with the initial set temperature as the target. Even if the user turns on the "when cold" switch 15b when the user still feels "cold" before the difference between the initial set temperature T _S0 and the room temperature after T ₁ hour reaches ΔT ₀ , The set temperature does not change and operation continues at T _S0 . Next, after the difference between the initial set temperature T _S0 and the room temperature after T ₂ hours has become smaller than ΔT ₀ , and you still feel "cold", input the "when cold" switch 15b, and the set temperature at that time will change. The temperature is set to a certain value higher than the room temperature, and operation continues in order to further raise the room temperature. Conversely, “when it’s hot” switch 15a
When turned on, the set temperature is set to a certain value lower than the room temperature at that time, and operation is stopped until the room temperature falls below the set temperature.

5 and 6 show a second embodiment of the present invention in which the comfortable environment is controlled according to the user's intention by changing the operating frequency of the compressor. The figure is a block diagram showing the overall system configuration, and FIG. 6 is a flowchart showing the operation.

In FIG. 5, 50 is a microcomputer that constitutes the control section of the compressor, and is equipped with a CPU 51, an input circuit 52 connected to this, a memory 53, and an output circuit 54. The detected temperature signal of the temperature-sensitive resistance element 102 for detection is inputted, and the output signal of the input switch section 15 representing the temperature sensations "when it is cold" and "when it is hot" is also inputted. There is. Further, 55 is a compressor drive circuit controlled by the output signal from the output circuit 54, which is controlled based on the room temperature detected by the temperature-sensitive resistance element 102 and the thermal switch input signal from the input switch section 15. The control command data calculated by the CPU 51 is supplied through the output circuit 54, so that the drive circuit 55 controls the compressor motor 5.
6. Controls the operating frequency supplied to 6. Further, the drive circuit 55 is connected to a power supply circuit 57, and the power supply circuit 57 is connected to a commercial power supply 58.

In the control system configured as described above, when the microcomputer 50 starts operating, the control program shown in FIG. 6 starts. Accordingly, first, in step 60, the room temperature detected by the temperature-sensitive resistance element 102 is input to the input circuit 5.
2, the room temperature detection process is carried out to the CPU 51, and in the next step 61, the operating frequency of the compressor is
Determine H _Z. Then, in the next step 62, it is determined whether or not there is an input from the input switch section 15, and when it is determined that there is a switch input,
In the next step 63, it is determined whether the input is for the "when it's cold" switch or the "when it's hot" switch. If it is determined that the input is for the "when it is cold" switch, the process proceeds to step 64, where the compressor operating frequency H _Z is increased by +H ₀ (a constant value), and this is determined as the set frequency. Thereafter, the process proceeds to step 65, where the set operating frequency data is output to the compressor drive circuit 55 through the output circuit, thereby controlling the output frequency supplied to the compressor motor 56 to become H _Z +H ₀ . The rotation speed of the compression motor 56 is increased for a certain period of time, the heating operation capacity of the air conditioner is increased, the pressure (temperature) of the heat exchanger is increased, and the temperature of the blown air is increased, making the room temperature feel cold. Operate to raise the temperature to below zero.

The same effects as in the first embodiment can also be obtained in the system of controlling the operating frequency of the compressor as described above.

Figures 7 and 8 show a third embodiment of the present invention in which a comfortable environment according to the user's wishes is obtained by controlling an electronic expansion valve provided in the refrigerant circuit. FIG. 7 is a block diagram showing the overall system configuration, and FIG. 8 is a flowchart showing the operation.

In FIG. 7, 70 is a microcomputer that constitutes an electronic expansion valve control section, which includes a CPU 71,
It is composed of an input circuit 72, a memory 73, and an output circuit 74 connected to this, and the input circuit 72 is connected to a temperature-sensitive resistance element 102 for detecting room temperature and an input switch 15 for expressing thermal sensation. In addition, a temperature detector 75 detects the temperature of an outdoor heat exchanger (functions as an evaporator during heating) that constitutes an air conditioning refrigerant circuit (not shown), and a temperature detector 75 detects the suction temperature of the compressor. Each temperature signal from the detector 76 is inputted. Also, 77
is an electronic expansion valve drive circuit controlled by the output signal from the output circuit 74, and this drive circuit 77
An electronic expansion valve 78 constituting a pressure reducing device for the refrigerant circuit is connected to the output side of the refrigerant circuit. 79 is a power supply circuit for the drive circuit 77, which is connected to a commercial power source 80.

In the control system configured as above, when the microcomputer starts operating,
The control program shown in FIG. 8 starts. Accordingly, first, in step 81, the outdoor heat exchanger temperature T _eve detected by the temperature detector 75 is taken into the CPU 71 through the input circuit 72. In the next step 82, the compressor suction temperature T _IN is detected by the detector 76.
Detect it and import it to CPU71. Then, in the next step 83, the degree of superheat (superheat) of the compressor suction refrigerant is calculated based on the detected temperatures T _eve and T _IN , and in the next step 84, the electronic expansion valve 78 is opened due to the superheat. Determine degree L. In other words, the electronic expansion valve 78
The opening degree L (as L increases, the opening degree becomes larger and the flow rate increases) is controlled to stabilize the refrigerant circuit. Further, in step 85, it is determined whether or not there is an input from the input switch 15, and when it is determined that there is a switch input, in the next step 86,
Determine whether the input is for the "when it's cold" switch or the "when it's hot" switch. here,
If it is determined that the input is the "when it is cold" switch, the process proceeds to step 87, where the opening degree of the electronic expansion valve 78 is decreased by -L ₀ (a constant value), and L-L ₀ is set as the opening degree. Then, in step 88, this opening degree command is outputted to the drive circuit 77 through the output circuit 74, thereby adjusting and controlling the opening degree of the electronic expansion valve 78 to L- _L0 for a certain period of time. Along with this, the pressure (temperature) of the heat exchanger increases, so the temperature of the blown air increases, and the ambient temperature that feels "cold" can be automatically shifted to an environmental temperature that matches the user's wishes.

Further, FIG. 9 shows a fourth embodiment of the present invention in which a sense of comfort can be provided to the user by controlling the direction of the blown air direction adjusting plate (vane).

In the same figure, 90 is a microcomputer that constitutes the wind direction adjustment plate drive motor control unit, and the CPU
91, an input circuit 92 connected to this, and a memory 9
3 and an output circuit 94, and connected to the input circuit 92 are a temperature-sensitive resistance element 102 for detecting room temperature and an input switch 15 for expressing thermal sensation. Further, 96 is the output circuit 94
This is a drive circuit for the wind direction adjustment plate controlled by the output signal from the wind direction adjustment plate drive motor 9.
7 is connected. 98 is a power supply circuit for the drive circuit 96, and 99 is a commercial power source.

In the air conditioner control system configured as described above, when the "cold" switch is input during heating, the microcomputer 9
The drive circuit 96 is controlled by the signal sent from 0, and the motor 97 is driven so that the air direction adjustment plate is oriented so that the air blown out from the indoor heat exchanger is directly drawn into the suction side of the heat exchanger. change for a certain period of time. This increases the temperature of the heat exchanger, which increases the temperature of the blown air, making the user feel "cold."
The ambient temperature that the user feels can be automatically shifted to an environmental temperature that matches the user's intentions.

〔Effect of the invention〕

As described above, according to the present invention, a thermal sensation of "cold" or "hot" is felt by the user in response to an input by the user using the thermal sensation switch when the difference from the indoor set temperature is less than a predetermined value. Since the environmental temperature at which the air conditioner is alleviated is automatically changed, it is possible to more easily obtain a comfortable environment that matches the user's wishes. When the thermal sensation switch is input, the temperature of the blown air is temporarily changed, which has the effect of giving the user a stimulating sense of comfort. In addition, it also has the effect of preventing erroneous temperature control due to input to the thermal sensation switch before the air conditioner has settled down to a constant state.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the air conditioner according to the present invention, FIG. 1 is a block diagram showing the overall system configuration, and FIG. 2 is a front view of the thermal sensation input switch. 3 is a flowchart showing the operating procedure, and FIG. 4 is a characteristic diagram of room temperature change during heating. 5 and 6 show a second embodiment of the air conditioner of the present invention, FIG. 5 is an overall system block diagram, and FIG. 6 is a flowchart showing its operating procedure. 7 and 8 show a third embodiment of the air conditioner of the present invention, with FIG. 7 being an overall system block diagram and FIG. 8 being a flowchart showing its operating procedure. FIG. 9 is an overall system block diagram showing a fourth embodiment of the air conditioner of the present invention, and FIG. 10 is a control block diagram of a conventional heat pump type air conditioner. 10, 50, 70, 90...Microcomputer constituting the control unit, 15...Thermal sensation input switch, 16...Indoor fan motor, 55...Compressor drive circuit, 56...Compressor drive motor, 77 …
...Electronic expansion valve drive circuit, 78...Electronic expansion valve, 9
6...Wind direction adjustment plate drive circuit, 97...Motor, 1
01... Operation switch, 102... Temperature sensitive resistance element for detecting room temperature, 106... Compressor. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. Temperature detection means for detecting the room temperature, an input switch section for inputting thermal sensations when the user feels "hot" or "cold," and the room temperature and room temperature setting from the temperature detection means. a set temperature determining means for changing the indoor set temperature in response to a thermal sensation switch input by the input switch section when the difference between An air conditioner characterized by comprising: a control means for changing the temperature of the blown air for a certain period of time so that the thermal sensation is alleviated. 2. Claim 1, characterized in that the blowing air temperature change control means is comprised of means for changing and controlling the rotational speed of the indoor blower for a certain period of time.
Air conditioner as described in section. 3. The air conditioner according to claim 1, wherein the blowout air temperature change control means comprises means for changing and controlling the operating frequency of the compressor for a fixed period of time. 4. The air conditioner according to claim 1, wherein the blowing air temperature change control means comprises means for changing and controlling the opening degree of an electronic expansion valve provided in the refrigerant circuit for a certain period of time. . 5. Claim 1, characterized in that the blown air temperature change control means is comprised of means for controlling the direction of the wind direction adjustment plate to be changed for a certain period of time so that the blown air is sucked into the suction port as it is. Air conditioner as described in section.