JP2002286276A - Air conditioner and control method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an air conditioner, capable of optimally controlling the choking amount of a choking means with a simple constitution, and a control method thereof. SOLUTION: In the air conditioner, provided with a refrigerating cycle having the choking means constituted of an electronic expansion valve 3 controlled by a control device 9 accommodating a microcomputer, the control device 9 is provided with a memory 10b, storing a program for deriving the optimum degree of opening of the electronic expansion valve 3 in accordance with the temperature and humidity information of indoor air and outdoor air, to operate and control the opening degree of the electronic expansion valve 3 by the program stored in the memory 10b based on the temperature and humidity information of the indoor and outdoor air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner and a method of controlling the same, and more particularly to an air conditioner and a method of controlling a refrigerant by controlling a refrigerant by a throttle means comprising an electronic expansion valve.

[0002]

2. Description of the Related Art An expansion mechanism as a throttle means used in a refrigeration cycle of an air conditioner includes a capillary tube, a thermal expansion valve, an electronic expansion valve, and the like. At present, electronic expansion valves, which are electronically controlled throttling means, are widely used for the purpose of expanding the range. FIG. 1 is an example of a simple refrigeration cycle diagram of the air conditioner, FIG. 9 is an electric circuit diagram relating to the control thereof, and FIG. 10 is a flowchart showing the operation of superheat control of the electronic expansion valve.

In FIG. 1, 1 is a compressor, 2 is an outdoor heat exchanger, 3 is an electronic expansion valve, 4 is an indoor heat exchanger, 5 is an outdoor blower, 6 is an indoor blower, and the electronic expansion valve 3 is The circulation amount of the refrigerant can be controlled by adjusting the opening degree.

The electric circuit for controlling the air conditioner shown in FIG. 9 controls a power switch 8 and an air conditioner body 7 composed of a compressor 1, an electronic expansion valve 3, an outdoor blower 5, an indoor blower 6, and the like. The control device 9 includes memories 10a and 10b, CPUs 11a and 11b including an operation unit and a control unit, input circuits 12a and 12b, and an output circuit 13a.
The memory 10a stores an air conditioner operation mode determining program and the electronic expansion valve opening determining program 10b stores the program.

[0005] The indoor / outdoor temperature input to the input circuit 12a
Calculation processing and control value determination processing are performed by the CPU 11a based on the humidity information 14, and output to the air conditioner main body 7 from the output circuit 13a to control the air conditioner operation mode. In addition, the CPU 11 is controlled based on the refrigeration cycle temperature / pressure information 15 input to the input circuit 12b.
b, a calculation process and a control value determination process are performed.
3b is output to the air conditioner body 7 to control the electronic expansion valve opening. Here, the indoor / outdoor temperature / humidity information refers to the indoor temperature / humidity and the outside air temperature / humidity detected from the air conditioner main body, the air conditioner control device or a temperature sensor and a humidity sensor installed in the vicinity thereof. The refrigeration cycle temperature / pressure information is the temperature / pressure of each part of the refrigeration cycle detected by a temperature sensor and a pressure sensor installed in the refrigeration cycle of the air conditioner.

[0006] When the air conditioner is for a vehicle, the room temperature, indoor humidity, and indoor and outdoor in the description of the present invention all mean the inside temperature, the inside humidity, and the inside and outside of the vehicle.

Next, superheat control, which is a typical control of a conventional electronic expansion valve, will be described with reference to a flowchart of FIG. When the air conditioner 7 operates and the superheat control of the electronic expansion valve 3 starts, the temperature and pressure at the outlet of the indoor heat exchanger 4 (the inlet of the compressor 1) are detected (step S30).
1) The degree of superheat is calculated by the CPU 11b of the air conditioning controller 9 based on the detected value (step S302). And
The calculated value of the superheat is compared with a set value (control target value) (step S303), and a control value of the valve opening is determined according to the difference (step S304), and the valve opening of the electronic expansion valve 3 is determined. Is performed (step S305). That is, if the calculated value is smaller than the set value, the degree of superheat is increased by decreasing the valve opening degree according to the difference to reduce the refrigerant circulation amount, and conversely, if the calculated value is larger than the set value, The valve opening is calculated and controlled so that the degree of superheat is reduced by increasing the valve opening according to the difference and increasing the refrigerant circulation amount. Then, it is determined whether or not the operation of the air conditioner 7 is continued (step S306). If the operation is continued, the processing from step S301 to step S305 is repeated to continuously control the opening degree of the electronic expansion valve.

[0008]

However, in the above-mentioned prior art, since a temperature sensor and a pressure sensor for detecting the temperature and pressure of each part of the refrigeration cycle are required, a capillary tube or a temperature-type expansion valve is required for the expansion mechanism. The circuit configuration becomes more complicated than in the case of using. Also, regarding the air conditioning control device, an input circuit for inputting the detected temperature and pressure of the refrigeration cycle, a program and an arithmetic circuit for determining the valve opening degree are required, so that a capillary tube or a temperature-type expansion valve is required. It is more complicated than refrigerant control.

Further, since there is always a time delay in the change of the temperature and the pressure of the refrigeration cycle with respect to the change of the opening degree of the electronic expansion valve, it is important to consider the time delay in the calculation of the air conditioning controller. It is. This time delay is not so large in a small-sized air conditioner, but it is particularly large in a large-sized air conditioner.
If this time delay is not sufficiently considered, the temperature and pressure of the refrigeration cycle may hunt or, in the worst case, diverge.

An object of the present invention is to provide an air conditioner capable of appropriately controlling the amount of throttle of the throttle means with a simple configuration and a method of controlling the same.

[0011]

The first aspect of the present invention is the first aspect of the present invention.
In the air conditioner according to the present invention, in the air conditioner provided with a refrigeration cycle having a throttle means controlled by a microcomputer, the microcomputer performs a calculation based on temperature and humidity information of indoor and outdoor air, and the throttle means Is controlled.

According to a second aspect of the present invention, there is provided an air conditioner including a refrigeration cycle having a throttling means controlled by a microcomputer, wherein the air conditioner is adapted to temperature and humidity information of indoor and outdoor air. The microcomputer is provided with storage means for storing a program for deriving an appropriate throttle amount of the throttle means, and performs an arithmetic operation according to the program stored in the storage means based on temperature and humidity information of room and outside air. The aperture amount of the aperture means is controlled.

[0013] In the air conditioner according to the third aspect of the present invention, the compressor, the indoor heat exchanger, the outdoor heat exchanger,
In an air conditioner provided with a refrigeration cycle including an indoor blower, an outdoor blower, and a throttle unit, the compressor, the indoor blower, and the outdoor blower are controlled by a microcomputer, and the throttle unit is controlled by a microcomputer. The temperature of the indoor and outdoor air for controlling the compressor, the indoor blower, and the outdoor blower;
A common input means for inputting humidity information and for inputting temperature and humidity information of the room and the outside air for controlling the throttling means is provided, and the temperature and humidity of the room and the outside air input by the common input means are provided. An arithmetic operation is performed by the microcomputer based on the information to control an aperture amount of the aperture means.

According to a fourth aspect of the present invention, there is provided an air conditioner having a refrigeration cycle having a throttle means controlled by a microcomputer, wherein the air conditioner is based on temperature and humidity information of indoor and outdoor air. The throttle amount of the throttle means is determined by the microcomputer in accordance with a preset valve opening degree determination condition, and the throttle amount is controlled stepwise.

In an air conditioner according to a fifth aspect of the present invention, in the air conditioner having a refrigeration cycle having a throttle means controlled by a microcomputer, the air conditioner is based on temperature and humidity information of indoor and outdoor air. The microcomputer is provided with storage means for storing a program for deriving an appropriate throttle amount of the throttle means according to a preset valve opening degree determination condition, and the storage means is provided based on temperature and humidity information of indoor and outdoor air. The aperture amount of the aperture means is determined by a program stored in the CPU, and the aperture amount is controlled stepwise.

In the air conditioner according to a sixth aspect of the present invention, the compressor, the indoor heat exchanger, the outdoor heat exchanger,
In an air conditioner provided with a refrigeration cycle including an indoor blower, an outdoor blower, and a throttle unit, the compressor, the indoor blower, and the outdoor blower are controlled by a microcomputer, and the throttle unit is controlled by a microcomputer. The temperature of the indoor and outdoor air for controlling the compressor, the indoor blower, and the outdoor blower;
A common input means for inputting humidity information and for inputting temperature and humidity information of the room and the outside air for controlling the throttling means, and a valve opening preset based on the temperature and humidity information of the room and the outside air Storage means for storing a program for deriving an appropriate throttle amount of the throttle means according to the determination condition, wherein the storage means is provided to the storage means based on temperature and humidity information of room and outside air inputted by the common input means. The diaphragm amount of the diaphragm means is determined by a stored program, and the diaphragm amount is controlled stepwise.

In the control method for an air conditioner according to a seventh aspect of the present invention, when controlling an air conditioner provided with a refrigeration cycle having a throttling means controlled by a microcomputer, the air conditioner for indoor and outdoor air is controlled. temperature·
An arithmetic operation is performed based on the humidity information to control the aperture amount of the aperture means.

In the control method for an air conditioner according to an eighth aspect of the present invention, when controlling an air conditioner provided with a refrigeration cycle having a throttling means controlled by a microcomputer, indoor and outdoor air is controlled. temperature·
The cooling load is obtained by performing an operation based on the humidity information, and the throttle amount of the throttle means is controlled based on the cooling load amount.

According to a ninth aspect of the present invention, there is provided a method for controlling an air conditioner having a refrigeration cycle having a throttle means controlled by a microcomputer. The throttle amount of the throttle means is determined based on a valve opening degree determination condition, and the throttle amount is controlled for the throttle means.

According to a tenth aspect of the present invention, there is provided a method for controlling an air conditioner having a refrigeration cycle having a throttle means controlled by a microcomputer. The throttle amount of the throttle unit is determined based on a valve opening degree determination condition, and the throttle amount of the throttle unit is controlled stepwise.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a configuration of a refrigeration cycle according to Embodiment 1, FIG. 2 is a block diagram showing an electric circuit related to control of an air conditioner, and FIG. FIG. 4 is a flowchart for explaining the control of the electronic expansion valve, FIG. 5 is a characteristic diagram showing the relationship between the outside air temperature, indoor temperature and humidity, and the cooling load, and FIG. 6 is the cooling load and the electronic expansion valve opening degree. FIG. 4 is a characteristic diagram showing the relationship of FIG. In the first embodiment, the configuration other than the specific configuration described here has the same configuration as that of the prior art described with reference to FIGS. 1, 9 and 10, and performs the same operation. is there. In the drawings, the same reference numerals indicate the same or corresponding parts.

The refrigeration cycle of the air conditioner according to this embodiment is the same as that of the prior art described above.
This is shown in FIG. In FIG. 1, 1 is a compressor, 2 is an outdoor heat exchanger, 3 is an electronic expansion valve, 4 is an indoor heat exchanger, 5
Is an outdoor blower, and 6 is an indoor blower. The electronic expansion valve 3 as the refrigerant throttle means can control the circulation amount of the refrigerant by adjusting the opening degree.

The electric circuit according to the first embodiment is shown in FIG.
Is shown in This electric circuit includes a power switch 8 and
Compressor 1, electronic expansion valve 3, outdoor blower 5, indoor blower 6
And a control device 9 having a built-in microcomputer for controlling the air conditioner main body 7 composed of the above. The control device 9 includes memories 10a and 10b, CPUs 11a and 11b each including an operation unit and a control unit, an input circuit 12, and output circuits 13a and 13b.
An electronic expansion valve opening determination program is stored in b.

FIG. 2 differs from the prior art in that the input information is only the indoor / outdoor temperature / humidity information 14 and the input circuit of the air conditioning controller 9 is only 12; It is. In this way, the control of both the air conditioner operation mode and the electronic expansion valve opening is performed by the input circuit 12.
The feature of this embodiment is that it is performed based on the indoor / outdoor temperature / humidity information 14 input to the.

Next, the control principle of this embodiment will be described. FIG. 3 shows the relationship between the indoor temperature, the cooling load, and the cooling capacity when the outside air temperature / humidity and the indoor humidity are constant.
As shown in the figure, the cooling load decreases with an increase in the indoor temperature, and conversely, the cooling capacity decreases with the indoor temperature, and the intersection of the two becomes a balance point where the cooling load and the cooling capacity are balanced. Then, the temperature and pressure of each part of the refrigeration cycle of the air conditioner stabilize while maintaining the cooling capacity at this balance point. Therefore, even when the valve opening of the electronic expansion valve is controlled based on the temperature and the pressure of each part of the refrigeration cycle, the electronic expansion valve finally has a valve opening corresponding to the refrigerant circulation amount at this balance point. Stabilize. That is, without using the temperature and pressure of each part of the refrigeration cycle,
Based on the room temperature / humidity and the outside air temperature / humidity, the balance point of the refrigeration cycle described above is obtained, and the valve opening of the electronic expansion valve is determined to be the valve opening corresponding to the refrigerant circulation amount at this balance point. The control of the expansion valve becomes possible.

Next, the operation of the electronic expansion valve control in the air conditioning control device 9 will be described with reference to the flowchart of FIG. When the operation of the air conditioner 7 is started and the control of the electronic expansion valve 3 is started, the indoor / outdoor temperature / humidity information 14 is detected (step S101), and the indoor / outdoor temperature / humidity information 14 (indoor) is detected by the CPU 11b of the air conditioning controller. Temperature and humidity and outside temperature and humidity)
To calculate the cooling load from (Step S10)
2). Further, a control value of the valve opening is determined based on the cooling load calculated in step S102 (step S103),
The valve opening of the electronic expansion valve 3 is controlled (step S10).
4). Then, it is determined whether or not the operation of the air conditioner 7 is continued (step S105). If the operation is continued, the processing from step S101 to step S104 is repeated to continuously control the opening degree of the electronic expansion valve. FIG.
FIG. 6 is an explanatory diagram showing the relationship between the indoor temperature and humidity, the outside temperature and humidity, and the cooling load, and FIG. 6 is a diagram showing the relationship between the cooling load and the opening degree of the electronic expansion valve.

As described above, in the control method according to the present embodiment, the electronic expansion is performed based on the information of the room temperature / room humidity, the outside air temperature / outside air humidity adopted for determining the operation mode of the air conditioner. Since the valve is controlled, the temperature sensor and pressure sensor of the refrigeration cycle for controlling the electronic expansion valve and the input circuit thereof are not required, and the refrigeration cycle and the air conditioning control device can be simplified.

Since the temperature and pressure of the refrigeration cycle are determined by the load conditions of the indoor temperature / humidity and the outside air temperature / humidity, the electronic expansion valve is adjusted to match the balance point of the refrigeration cycle based on the load conditions. By determining the opening, it is not necessary to consider the time delay of the temperature and the pressure of the refrigeration cycle due to the change in the valve opening, and further, the danger of hunting and divergence is eliminated.

Embodiment 2 Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a characteristic diagram showing an example of the electronic expansion valve opening degree determination table, and FIG. 8 is a flowchart for explaining the operation. Embodiment 2
In the first embodiment, the configuration other than the specific configuration described here will be described with reference to FIGS. 1 to 6.
It has the same configuration as and has the same effect.
In the figures, the same reference numerals indicate the same or corresponding parts.

In the second embodiment, the valve opening degree of the electronic expansion valve is not determined by calculation, but is determined based on determination conditions stored in advance in the memory 10b of the air-conditioning control device. Control the degree. FIG. 7 shows an example of a valve opening degree determination condition based on the indoor temperature and the outside air temperature. The valve opening degree is determined based on the detected indoor / outdoor temperature / humidity information.

Although the electric circuit diagram is the same as that of FIG. 2 of the first embodiment, the memory 10b stores a valve opening determination condition instead of an electronic expansion valve opening calculation program,
The difference from the first embodiment is that the determination process is performed instead of the calculation of the valve opening degree in U11b.

Next, an electronic expansion valve control operation of the air conditioning control device 9 according to the second embodiment will be described with reference to a flowchart of FIG. The detection of indoor / outdoor temperature / humidity information (step S201) is the same as in the first embodiment,
The valve opening is determined based on the detected indoor / outdoor temperature / humidity information (step S202), and control is performed according to the valve opening obtained by the determination (steps S203, S204, S20).
5) is different from the first embodiment. Then, it is determined that the operation is to be continued (step S206), and while the operation is continuing, the processing from step S202 to step S205 is repeated to perform stepwise control of the electronic expansion valve.

As described above, in the control method of the air conditioner according to the second embodiment, the opening degree of the electronic expansion valve is determined not based on the calculation but on the basis of the determination condition stored in the memory of the air conditioning controller. In addition, an arithmetic circuit for the electronic expansion valve is not required, and the air conditioning control device can be further simplified as compared with the first embodiment.

As described above, according to the first embodiment of the present invention, since the electronic expansion valve is controlled based on the indoor / outdoor temperature / humidity information, the refrigeration cycle temperature sensor, pressure sensor and its input circuit are unnecessary. Thus, the refrigeration cycle and the air conditioning control device can be simplified. Also,
Since the valve opening is determined so as to match the balance point between the temperature and the pressure of the refrigeration cycle, stable control can be performed without hunting or diverging of the temperature or the pressure.

Further, according to the second embodiment of the present invention, the opening of the electronic expansion valve is determined not based on the calculation but on the basis of the determination condition, so that an arithmetic circuit is not required and the air conditioning control device is simplified. Can be.

[0036]

According to the first aspect of the present invention, the microcomputer performs a calculation based on the temperature and humidity information of the room and the outside air to control the amount of aperture of the aperture means.
With a simple configuration, it is possible to obtain an air conditioner that can appropriately control the throttle amount of the throttle unit.

According to the second aspect of the present invention, the microcomputer is provided with storage means for storing a program for deriving an appropriate throttle amount of the throttle means in accordance with temperature and humidity information of the room and the outside air. And an air conditioner that can appropriately control the throttle amount of the throttle unit with a simple configuration by performing calculations by a program stored in the storage unit based on temperature and humidity information of the outside air and controlling the throttle amount of the throttle unit. Can be obtained.

According to the third aspect of the present invention, the compressor, the indoor blower, and the outdoor blower are controlled by a microcomputer, and the throttle means is controlled by a microcomputer, and the compressor, the indoor blower, and the outdoor blower are controlled. The temperature of the indoor and outdoor air for controlling the blower
A common input means for inputting humidity information and for inputting temperature and humidity information of the room and the outside air for controlling the throttling means is provided, and the temperature and humidity of the room and the outside air input by the common input means are provided. By performing the calculation by the microcomputer based on the information and controlling the throttle amount of the throttle unit, it is possible to obtain an air conditioner capable of appropriately controlling the throttle amount of the throttle unit with a simple configuration.

According to the fourth aspect of the present invention, the throttle amount of the throttle means is determined by the microcomputer based on the preset valve opening degree determination condition, and the throttle amount is controlled in a stepwise manner. An air conditioner that can appropriately control the amount of throttle of the throttle means can be obtained.

According to the fifth aspect of the present invention, the microcomputer is provided with storage means for storing a program for deriving an appropriate throttle amount of the throttle means based on a preset valve opening degree determination condition. Determining the throttle amount of the throttle unit by a program stored in the storage unit based on the temperature / humidity information, and controlling the throttle amount of the throttle unit to obtain an air conditioner capable of appropriately controlling the throttle amount of the throttle unit with a simple configuration. Can be.

According to the sixth aspect of the present invention, the compressor, the indoor blower, and the outdoor blower are controlled by the microcomputer, and the throttle means is controlled by the microcomputer, and the compressor, the indoor blower, and the outdoor blower are controlled. A common input means for inputting temperature and humidity information of the room and the outside air for controlling the throttling means, and temperature and humidity information of the room and the outside air for controlling the throttle means. Storage means for storing a program for deriving an appropriate throttle amount of the throttle means in accordance with a valve opening degree determination condition set in advance based on humidity information, wherein room and outdoor air inputted by the common input means are provided. The throttle amount of the throttle unit is determined by a program stored in the storage unit based on the temperature and humidity information of By controlling, it is possible to obtain an air conditioner which can appropriately control the aperture amount of the diaphragm means in a simple configuration.

According to the seventh aspect, the calculation is performed based on the temperature and humidity information of the room and the outside air, and the throttle amount of the throttle unit is controlled by the microcomputer, so that the throttle amount of the throttle unit can be appropriately adjusted with a simple configuration. Thus, it is possible to obtain a control method of the air conditioner that can be controlled in a short time.

According to the eighth aspect, a cooling load is obtained by performing calculations based on temperature and humidity information of the room and the outside air.
By controlling the throttle amount of the throttle unit by the microcomputer based on the cooling load amount, it is possible to obtain a control method of the air conditioner that can appropriately control the throttle amount of the throttle unit with a simple configuration.

According to the ninth aspect, the throttle amount of the throttle unit is determined by the microcomputer based on the preset valve opening degree determination condition and controlled, whereby the throttle amount of the throttle unit is reduced with a simple configuration. A method of controlling an air conditioner that can be appropriately controlled can be obtained.

According to the tenth aspect, the microcomputer determines the throttle amount of the throttle means on the basis of the preset valve opening degree determination condition, and controls the throttle amount stepwise, thereby achieving a simple configuration. It is possible to obtain a method of controlling the air conditioner, which can appropriately control the throttle amount of the throttle unit.

[Brief description of the drawings]

FIG. 1 is a refrigeration cycle diagram of a method for controlling an air-conditioning apparatus according to Embodiment 1.

FIG. 2 is an electric circuit diagram of a control method for the air-conditioning apparatus according to Embodiment 1.

FIG. 3 is an explanatory diagram showing the relationship between the indoor temperature, the cooling load, and the cooling capacity when the outside air temperature / humidity and the indoor humidity are constant in the method for controlling the air-conditioning apparatus according to Embodiment 1.

FIG. 4 is a flowchart for illustrating a method for controlling the air-conditioning apparatus according to Embodiment 1.

FIG. 5 is an explanatory diagram showing a relationship between an outside air temperature and humidity, an in-vehicle temperature and humidity, and a cooling load in the control method of the air-conditioning apparatus according to Embodiment 1.

FIG. 6 is an explanatory diagram illustrating a relationship between a cooling load and an electronic expansion valve opening degree in the control method of the air-conditioning apparatus according to Embodiment 1.

FIG. 7 is an example of a valve opening degree determination table in the control method of the air-conditioning apparatus according to Embodiment 2.

FIG. 8 is a flowchart for illustrating a method for controlling an air-conditioning apparatus according to Embodiment 2.

FIG. 9 is an electric circuit diagram of a control method for an air conditioner according to the related art.

FIG. 10 is a flowchart illustrating a method for controlling an air conditioner according to the related art.

[Explanation of symbols]

1 compressor, 2 outdoor heat exchanger, 3 electronic expansion valve, 4
Indoor heat exchanger, 5 outdoor blower, 6 indoor blower, 7
Air conditioner body, 8 power switch, 9 air conditioning controller, 10a, 10b memory, 11a, 11b CP
U, 12a, 12b input circuit, 13a, 13b output circuit, 14 indoor / outdoor temperature / humidity information, 15 refrigeration cycle temperature / pressure information.

Claims (10)

[Claims] In an air conditioner provided with a refrigeration cycle having a throttle unit controlled by a microcomputer, a calculation is performed by the microcomputer based on temperature and humidity information of room and outside air, and the throttle amount of the throttle unit is reduced. An air conditioner characterized by controlling. 2. An air conditioner provided with a refrigeration cycle having a throttle means controlled by a microcomputer, for deriving an appropriate throttle amount of said throttle means in accordance with temperature and humidity information of room and outside air. A storage unit storing a program is provided in the microcomputer, and a calculation is performed by a program stored in the storage unit based on temperature and humidity information of room and outside air to control a throttle amount of the throttle unit. Air conditioner. 3. A compressor, an indoor heat exchanger, an outdoor heat exchanger,
In an air conditioner provided with a refrigeration cycle including an indoor blower, an outdoor blower, and a throttle unit, the compressor, the indoor blower, and the outdoor blower are controlled by a microcomputer, and the throttle unit is controlled by a microcomputer. The temperature of the indoor and outdoor air for controlling the compressor, the indoor blower, and the outdoor blower;
A common input means for inputting humidity information and for inputting temperature and humidity information of the room and the outside air for controlling the throttling means is provided, and the temperature and humidity of the room and the outside air input by the common input means are provided. An air conditioner, wherein the microcomputer performs a calculation based on information to control a throttle amount of the throttle means. 4. An air conditioner provided with a refrigeration cycle having a throttle means controlled by a microcomputer, wherein the microcomputer controls the valve opening degree in accordance with preset valve opening degree determination conditions based on temperature and humidity information of indoor and outdoor air. The air conditioner according to claim 1, wherein the throttle amount of the throttle unit is determined, and the throttle amount is controlled stepwise. 5. An air conditioner provided with a refrigeration cycle having a throttle means controlled by a microcomputer, wherein said throttle means is controlled in accordance with a preset valve opening degree determination condition based on temperature and humidity information of indoor and outdoor air. A storage unit storing a program for deriving an appropriate throttle amount is provided in the microcomputer, and the throttle amount of the throttle unit is determined by the program stored in the storage unit based on temperature and humidity information of the room and the outside air. An air conditioner characterized by performing stepwise control of a throttle amount. 6. A compressor, an indoor heat exchanger, an outdoor heat exchanger,
In an air conditioner provided with a refrigeration cycle including an indoor blower, an outdoor blower, and a throttle unit, the compressor, the indoor blower, and the outdoor blower are controlled by a microcomputer, and the throttle unit is controlled by a microcomputer. The temperature of the indoor and outdoor air for controlling the compressor, the indoor blower, and the outdoor blower;
A common input means for inputting humidity information and for inputting temperature and humidity information of the room and the outside air for controlling the throttling means, and a valve opening preset based on the temperature and humidity information of the room and the outside air Storage means for storing a program for deriving an appropriate throttle amount of the throttle means according to the determination condition, wherein the storage means is provided to the storage means based on temperature and humidity information of room and outside air inputted by the common input means. An air conditioner characterized in that the throttle amount of the throttle means is determined by a stored program, and the throttle amount is controlled stepwise. 7. Controlling an air conditioner equipped with a refrigeration cycle having a throttle unit controlled by a microcomputer, based on temperature and humidity information of indoor and outdoor air, and controlling a throttle amount of the throttle unit. A method for controlling an air conditioner, comprising: 8. When controlling an air conditioner equipped with a refrigeration cycle having a throttle means controlled by a microcomputer, a cooling load is obtained by performing calculations based on temperature and humidity information of indoor and outdoor air. A method for controlling an air conditioner, comprising: controlling a throttle amount of said throttle means based on a load amount. 9. When controlling an air conditioner provided with a refrigeration cycle having a throttle means controlled by a microcomputer, a throttle amount of the throttle means is determined based on a preset valve opening degree determination condition, A method for controlling an air conditioner, comprising controlling a throttle amount of a throttle unit. 10. When controlling an air conditioner provided with a refrigeration cycle having a throttle device controlled by a microcomputer, a throttle amount of the throttle device is determined based on a preset valve opening degree determination condition. A method for controlling an air conditioner, comprising: controlling a throttle amount stepwise with respect to a throttle means.