KR0136073Y1 - Operating control device of airconditioner - Google Patents

Abstract

The present invention relates to a drive control device for an air conditioner, the drive control device for driving the main valve driving unit 50 and the first and second auxiliary valve (SVA) (SVB) for controlling the drive of the main valve (SV1) First and second auxiliary valve driving units 60 and 70 are provided for control. In addition, the main valve driving unit 50 compares the voltage of the capacitor C5 configured to be charged after the compressor 10 stops driving, the voltage charged by the capacitor C5 and the voltage dividing resistors R10 and R11 to control the signal. Comparator IC04 for outputting a. Therefore, the drive control device according to the present application is a transistor (Q4) for controlling the operation of each valve by outputting a high signal when the voltage charged in the capacitor (C5) is less than the divided voltage after the drive of the compressor 10 is stopped ( By turning on Q6) (Q7), the main valve SV1 and the first and second auxiliary valves SVA and SVB are controlled to be opened, and the voltage charged in the capacitor C5 is divided into voltage divider resistors R10 and R11. When the voltage is greater than the voltage divided by), a low signal is output to control the main valve SV1 and the first and second auxiliary valves SV and SVB to be stopped. Accordingly, the present application has an effect of preventing the pressure imbalance between the high pressure side and the low pressure side of the refrigerant after the compressor is stopped.

Description

Drive controller of air conditioner

The present invention relates to a drive controller of an air conditioner, and more particularly, to a drive controller of an air conditioner having a plurality of evaporators and one compressor.

In general, a refrigeration cycle of an air conditioner is composed of a compressor, a condenser, a capillary tube, an evaporator, and a refrigerant pipe connecting them in series, and the refrigerant flowing in the refrigerant pipe is compressed, condensed, reduced in pressure, and evaporated by the refrigeration cycle. By absorbing and dissipating heat from the indoor and outdoor air via the air, the space is cooled or heated.

An air conditioner generally includes an outdoor unit having a condenser installed at an outdoor side and having a compressor for compressing a refrigerant at a high temperature and high pressure and a condenser for exchanging the refrigerant compressed at a high temperature and high pressure with outdoor air, Capillary tube that depressurizes refrigerant at low temperature and capillary tube is divided into one-piece unit and one-piece unit where indoor unit and outdoor unit are separated. do.

The air conditioner of the above configuration is composed of one indoor unit and one outdoor unit, and in recent years, as the use of air conditioners is generalized, in order to cool and heat indoor spaces divided into a large number of households, large stores and companies, etc. Separate or integrated air conditioners are required for each space.

Therefore, according to the above trend, an air conditioner, that is, a multi-air conditioner, which is configured to control a plurality of indoor units by one outdoor unit has been proposed.

A cooling cycle of an air conditioner having one outdoor unit and a plurality of indoor units is shown in FIG.

As shown in FIG. 1, the air conditioner includes a compressor 10 for compressing a refrigerant at a high temperature and high pressure, a condenser 11 for heat-exchanging the high temperature and high pressure refrigerant compressed by the compressor 10 with outdoor air; The refrigerant, which has been depressurized by the first capillary cap (CapA), the second capillary cap (CapB), and the capillary tube, is provided to decompress the refrigerant heat-exchanged with the outdoor air by the condenser 11 to be easily evaporated from the indoor air. Shear of the first evaporator 12 and the second evaporator 13 and the first and second capillaries CapA (CapB) respectively connected to the first and second capillaries CapA (CapB) to take heat away and evaporate. From the condenser 11 when opening the first and second auxiliary valves SVA (SVB) respectively installed in the first and second auxiliary valves CapA and CapB to control the inflow of refrigerant from the condenser 11 to the first and second capillary tubes CapA and CapB. The main valve (SV1) and the main capillary cap (Cap) connected in parallel to each other to control the outflow of the refrigerant.

The operation of the cooling cycle configured as described above is as follows.

First, the first evaporator 12 is a room A, the second evaporator 13 is installed in the room B, respectively, for example will be described.

In the operation of the air conditioner, if only one chamber A or room B requires the heating / cooling operation, only the auxiliary valve connected to the evaporator of the chamber requiring the heating / cooling operation is opened. If necessary, both the first and second auxiliary valves SVA and SVB are opened.

If only one auxiliary valve, for example, the first auxiliary valve SVA is opened, the main valve SV1 is opened so that the high-pressure refrigerant passing through the condenser 11 from the compressor 10 passes through the main capillary cap. The air in the room A is cooled by depressurizing it by the first capillary tube (CapA) and flowing it into the first evaporator 12.

On the other hand, when the two auxiliary valves, that is, the first and second auxiliary valves SVA and SVB, are both open, the main valve SV1 is closed to supply the refrigerant via the condenser 11 to the main capillary tube CAP. Through the first pressure reduction through the first and second capillary cap (CapA) (CapB) to reduce the secondary pressure to enter the first and second evaporators 12, 13 to cool both the room A and B.

In addition, when both chambers A and B do not require heating and cooling operation, the main valve SV1 and the first and second auxiliary valves SV and SVB are turned off to stop the refrigerant flow, and the compressor 10 ) Stops driving.

However, in such an air conditioner, the flow of the refrigerant is abruptly stopped when the valves for controlling the flow of the refrigerant are turned off at the same time as the operation of the compressor 10 is stopped, thereby causing a high pressure between the high pressure side and the low pressure side of the refrigerant. An imbalance phenomenon occurs.

The present invention is to solve the conventional problems as described above, the object of the present invention is to open the valve for a predetermined time when the operation of the compressor is stopped, by the high pressure side of the refrigerant due to the abrupt shutoff of the refrigerant flow It is to provide a drive control device of the air conditioner to prevent the pressure imbalance between the low pressure side.

The driving control apparatus of the air conditioner according to the present invention for achieving the above object, the compressor for compressing the refrigerant at a high temperature and high pressure, a plurality of evaporators connected in parallel to the compressor, and to control the flow of the refrigerant supplied to the evaporators The main valve and the first and second auxiliary valves installed between the compressor and the evaporators, the room A input unit and the room B input unit for receiving whether the compressor is driven, and the operation start signals from the room A input unit and the room B input unit. A load drive judging unit which outputs drive signals of the compressor, the main valve, and the first and second subsidiary valves according to whether or not the input signal is input, and a valve that controls the opening and closing of the valve when the compressor is driven by receiving a control signal from the load drive judging unit. In the air conditioner provided with a driving unit for heating and cooling a plurality of rooms, the valve driving unit opens the main valve and the first and second auxiliary valves (SVA) (SVB) when the compressor is stopped. In order to close each valve after the delay time determined by the charging voltage of the capacitor after being turned on, its base terminal is one output terminal of the load driving discriminating unit so that it can be turned on and off by a control signal output from the load driving discriminating unit. A fourth transistor connected to the fourth transistor; A relay connected to the collector terminal of the fourth transistor to be turned on / off by the fourth transistor so as to control the driving of the main valve; First and second transistors that receive a control signal from a load driving determiner and are driven on / off; A third transistor having its base terminal connected to a collector terminal of the first transistor so as to be controlled according to on / off of the first and second transistors; A capacitor connected to the collector terminal of the third transistor via a resistor; A comparator having an inverting terminal connected to the capacitor and a non-inverting terminal connected to an intermediate tap between the voltage divider resistors; An anode terminal is connected to the output side of the comparator, and the cathode terminal is characterized by having a diode connected to the base terminal of the fourth transistor.

1 is a refrigeration cycle diagram of a general air conditioner having a plurality of evaporators.

2 is a detailed circuit diagram of a drive control apparatus for an air conditioner according to the present invention.

(A) to (c) of FIG. 3 is a flowchart showing a driving control method of the air conditioner according to the present invention.

* Explanation of symbols for main parts of the drawings

10 compressor 11 condenser

12: first evaporator 13: second evaporator

20: Room A input unit 30: Room B input unit

40: load drive discrimination unit 50: main valve drive unit

60: first auxiliary valve driver 70: second auxiliary valve driver

CAP: Main capillary SV1: Main valve

SVA: 1st Auxiliary Valve SVB: 2nd Auxiliary Valve

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a refrigeration cycle diagram of a multi-type air conditioner applied to the present invention.

As shown in FIG. 1, the air conditioner according to the present invention receives a compressor 10 for compressing a refrigerant at high temperature and high pressure, and receives a refrigerant compressed at high temperature and high pressure from the compressor 10 to exchange heat with outdoor air. The first capillary cap (CapA) and the second capillary cap (CapB), and the first and second capillary tubes (CapA), respectively, are provided to reduce the pressure of the condenser 11 and the refrigerant heat exchanged in the condenser 11 to an easily evaporated image. Installed in front of the first and second evaporators 12 and 13 and the first and second capillaries CapA and CapB respectively connected to CapB to control the inflow of refrigerant from the condenser 11, respectively. The first and second auxiliary valves (SVA) (SAB), the first and second auxiliary valves (SVA) (SVB) in the opening of the refrigerant from the condenser 11 when the opening of the first and second connected in parallel to each other. A main valve SV1 and a main capillary tube CAP provided in front of the second auxiliary valve SVA SVB are provided.

In addition, a drive control circuit as shown in FIG. 2 is provided to drive control the main valve SV1 and the first and second sub-valve SVs SVB for controlling the flow of the refrigerant.

Hereinafter, the configuration of the drive control circuit for controlling the drive of each valve will be described in detail with reference to FIG.

The drive control circuit according to the present invention, the operation start signal from the room A input unit 20, the room A user is provided with a second evaporator 13 receives the operation start signal from the room A user provided with the first evaporator 12 When an operation signal is input from at least one of the input room B input unit 30, room A input unit 20, and room B input unit 30, a predetermined control signal is output to drive the compressor 10 and drive the main valve. Driven by the control signal output from the output terminals ① and ② of the drive discrimination circuit unit 40, the compressor 10 turned on / off by the control signal of the drive discrimination circuit unit 40, and the drive discrimination circuit unit 40 The first and the second to control the driving of the first and second auxiliary valve (SVA) (SVB) by receiving a signal from the main valve driver 50 and the chamber A input unit 20 and the chamber B input unit 30 to be controlled. It is provided with two auxiliary valve drive parts (60).

The main valve driver 50 is connected to the first transistor Q1 and the output terminal ② connected to the output terminal ① of the load driver discrimination unit 40 so as to be turned on / off by receiving a control signal from the load driver discrimination unit 40. A third transistor Q3 having a base terminal connected to the collector terminal of the first transistor Q1 so as to be controlled according to the second transistor Q2 and the first transistor Q1 on / off, and a load driving discrimination unit; A fourth transistor Q4 and a fourth transistor Q4 in which the base terminal thereof is connected to the first output terminal of the load driving discrimination unit 40 so as to control the driving of the main valve SV1 according to the control signal of 40; Is connected to the collector terminal of the fourth transistor Q4 to control its operation according to on / off of the first relay RY1 for controlling opening and closing of the valve, and the base terminal of the collector terminal of the first transistor Q1. Is connected and its collector terminal is a fifth transistor Q5 connected to the cathode terminal of diode D2. When the third transistor Q3 is turned off, a resistor R6 is applied to the collector terminal of the third transistor Q3 so as to be charged by receiving a voltage from a DC power source connected to the collector terminal of the third transistor Q3. The inverting terminal (-) is connected to the capacitor C5 so that the capacitor C5 connected through it and the charging voltage of the condenser C5 are inputted, and the voltage divided by the voltage divider resistors R10 and R11 is the ratio thereof. An intermediate tap between the voltage divider resistors R10 and R11 and its non-inverting terminal + are connected so as to be input to the inverting terminal +, and the output terminal thereof is the cathode side of the first diode D1 and the second diode D2. And a comparator IC04 connected thereto.

The first auxiliary valve driving unit 60 is a photocoupler IC02 connected to an output terminal of the room A input unit 20 so as to drive the first auxiliary valve SVA when a driving signal is input from the room A input unit 20. ), A sixth transistor Q6 connected to a base terminal thereof via a resistor R16 at an output terminal of the photocoupler IC02, and a sixth transistor Q6 to be operated when the sixth transistor Q6 is turned on. A second relay RY2 connected to the collector terminal of the < RTI ID = 0.0 >

Configuration of the Second Auxiliary Valve Driver 70 The same as the configuration of the first auxiliary valve driver 60 so that the second auxiliary valve SVB can be driven when a drive signal is input from the B-room input unit 30. A photocoupler IC03 connected to the output terminal of the B real input unit 30, a seventh transistor Q7 having its base terminal connected to the output terminal of the photocoupler IC03 via a resistor R21, and a seventh transistor. A third relay RY3 is connected to the collector terminal of the seventh transistor Q7 so as to be operated when Q7 is turned on to control the driving of the second auxiliary valve SVB.

In addition, the base end of the sixth and seventh transistors Q6 and Q7 of the first and second auxiliary valve driving units 60 and 70 is connected to the collector end of the fifth transistor Q5 of the main valve driving unit 50. (D3) and (D4) and resistors (R16) and (R22) are connected through.

Hereinafter, the operation of the air conditioner drive control circuit according to the present invention will be described in detail with reference to (a) to (b) of FIG. 3.

First, when the indoor unit provided in each chamber receives an indoor unit driving signal from a user, the indoor unit outputs a driving signal to the driving discrimination circuit unit 40, the first auxiliary valve driving unit 60, and the second auxiliary valve driving unit 70. The drive discrimination circuit unit 40 outputs a HIGH signal to the output terminals ① and ② when the driving of the indoor units of the chambers A and B is both off, and when only the indoor unit of one of the chambers is driven. The output terminal outputs a high signal, and the output terminal outputs a low signal. When both indoor units are driven, the output terminal outputs a low signal to both output terminals ① and ②.

(A) of FIG. 3 is operation | movement of the air conditioner when the indoor unit of either room A or room B is driven.

In this case, when the operating temperature signal is input from the user to the indoor unit of the room A in step S10, by driving an indoor fan (not shown) in step S11 to heat exchange the indoor air via the evaporator provided in the indoor main body to the room Discharged.

In step S12, the desired temperature input from the user is compared with the room temperature detected by the temperature sensor (not shown). If the desired temperature is lower than the set temperature (in the case of cooling operation), the process proceeds to step S13. The flow proceeds to step S14 to open the main valve SV1 and the first auxiliary valve SVA. After the main valve SV1 and the first auxiliary valve SVA are opened in step S14, the process proceeds to step S15 to drive the compressor 10 to cool the air in the chamber A by changing the refrigerant in the cooling cycle according to the operation of the compressor. Let's do it.

At this time, the driving operation of the main valve SV1 and the first auxiliary valve SVA performed in step S14 will be described with reference to the circuit diagram of FIG.

First, when the operating temperature signal is input to the room A indoor unit and an AC voltage is input from the room A input unit 20 to the photocoupler IC02 of the first auxiliary valve driving unit 60, the photocoupler IC02 receives the amount of the AC voltage. It turns on for a negative half cycle and turns off for a negative half cycle. At this time, the capacitor C6 connected in series to the light receiving portion side of the photocoupler IC02 is charged for a positive half cycle of the AC voltage and discharged for a negative half cycle. Therefore, a constant voltage is input to the base terminal of the sixth transistor Q6 connected in parallel to the photocoupler IC02 and the capacitor C6. Accordingly, since the sixth transistor Q6 is turned on, power is applied to the relay RY2 connected to the collector terminal of the sixth transistor Q to drive the first auxiliary valve SVA.

At this time, since the high signal is output at the ① output terminal of the driving judgment circuit unit 40 and the low signal is output at the output terminal, the first and second transistors Q1 and Q2 of the main valve driving unit 50 are turned off. Accordingly, the third transistor Q3 and the third transistor Q5 are turned on. Since the high signal is input to the base terminal of the fourth transistor Q4 connected to the output terminal of the driving discrimination circuit 40, the fourth transistor Q4 is turned on to supply power to the relay RY1 connected to the collector terminal. Is applied. Therefore, the main valve SV1 is driven by the drive of the relay RY1.

In addition, since the voltage is not applied to the capacitor C5 connected to the collector terminal of the third transistor Q3 as the third transistor Q3 is turned on, charging is not performed.

In addition, the output of the comparator IC04 is kept high, but since a high voltage is applied to both ends of the diode D1 connected to the output terminal of the comparator IC04, the output of the comparator IC04 is operated by the relay RY1. Does not affect.

FIG. 3B is a flowchart showing the operation of the air conditioner when both the indoor units of the A and B chambers are driven.

When the on-signal is input from the user in both the indoor units provided in the room A and the room B in step S20, the indoor air (not shown) is driven in step S21 to operate the evaporators 12 and 13 provided inside the indoor main body. Heat exchange is performed via gas and then discharged into the room.

In step S22, the set temperature received from the user is compared with the room temperature detected by the temperature sensor (not shown). If the set temperature is lower than the room temperature (in the case of cooling operation), the process proceeds to step S23 to determine whether the predetermined time has elapsed for 3 minutes. After 3 minutes have passed, the process proceeds to step S24 where the main valve SV1 is shut off and the first subsidiary valve SV and the second subsidiary valve SVB are opened. After opening the valves, the compressor 10 is driven in step 25 to cool the air in the chambers A and B by phase-changing the refrigerant in the cooling cycle according to the operation of the compressor 10.

The drive control operation of the valve made in step S24 will be described in detail with reference to FIG.

First, an AC voltage is inputted from the A chamber input section 20 and the B chamber input section 30 to the photocoupler IC02 of the first auxiliary valve driver 60 and the photocoupler IC03 of the second auxiliary valve driver 70. Then, photocoupler IC02 (IC03) is turned on for a positive half period of the AC voltage and turned off for a negative half period. At this time, the capacitors C6 and C7 connected in series to the light-receiving side of the photocoupler IC02 and IC03 are charged for a positive half cycle of the AC voltage and discharged for a negative half cycle. Accordingly, a constant voltage is input to the base terminals of the sixth and seventh transistors Q6 and Q7 connected in parallel to the photocouplers IC02 and IC03 and the capacitors C6 and C7, respectively. Accordingly, since the sixth and seventh transistors Q6 and Q7 are turned on, power is applied to the relays RY2 and RY3 connected to the collector terminals of the sixth and seventh transistors Q6 and Q7, respectively. The auxiliary valve SVA and the second auxiliary valve SVB are driven, respectively.

In addition, since the low signal is output from both the output terminals ① and ② of the drive discrimination circuit part 40, the first and second transistors Q1 and Q2 of the main valve driving part 50 are turned off, whereby the third and fifth Transistors Q3 and Q5 are turned on. Therefore, since no voltage is input to the capacitor C5 connected to the collector terminal of the third transistor Q3, the capacitor C5 is not charged. Therefore, the output of the comparator IC04 becomes high, but the output signal of the comparator IC04 does not affect the driving of the relay RY1 by the diode D1 connected to the output terminal of the comparator IC04.

(C) of FIG. 3 is a flowchart which shows the drive control method of each valve at the time of the drive stop of a compressor.

When the operation signal is input from the indoor units of the room A and the room B in step S30, the indoor fan is driven in step S31 to discharge the indoor air to the room via the evaporator provided in the indoor unit main body. In step S32, if the set temperature is compared with the room temperature and the set temperature is equal to or less than the room temperature (in the case of cooling operation), the process proceeds to step S34 to continue the compressor. However, if the set temperature is higher than the room temperature, the operation of the compressor 10 is stopped in step S33, and the flow proceeds to step S35 to open the main valve SV1 and the first and second auxiliary valves SVA and SVB. In step S36, it is determined whether the predetermined time has elapsed, and after the predetermined time has elapsed, the process proceeds to step S37 to turn off the driving of each valve to end the operation.

The driving operation of the valve made in the above steps S35 to S37 will be described in detail with reference to FIG. 2.

First, when the driving of the compressor 10 is stopped, since the high signal is output from both the output terminals ① and ② of the driving discrimination circuit unit 40, the fourth transistor Q4 of the main valve driving unit 50 is turned on and thus the relay ( Power is applied to RY1 to open the main valve SV1.

Since the AC voltage is not input to the first auxiliary valve driver 60 and the second auxiliary valve driver 70, the photocoupler IC02 (IC03) is turned off. However, since the first and second transistors Q1 and Q2 are operated by the high signal input to the base from the driving circuit circuit 40, the fifth transistor Q5 is turned off. Accordingly, the collector voltage of the fifth transistor Q5 passes through the diodes D3 and D4, respectively, and the seventh of the sixth transistor Q6 of the first auxiliary valve driver 60 and the second auxiliary valve driver 70 of the fifth transistor Q5. Since it is input to the base of the transistor Q7, the sixth and seventh transistors Q6 and Q7 are turned on so that the relays RY2 and RY3 are turned on, respectively. Thus, the first and second auxiliary valves SVA and SVB are opened.

In addition, since the first and second transistors Q1 and Q2 are operated by the input high signal and the third transistor Q3 is turned off, the capacitor C5 connected to the collector terminal of the third transistor Q3 is turned on. Since the collector voltage is input via the resistors R7 and R9, the capacitor C5 is charged with a voltage of a predetermined magnitude.

At this time, if the charging voltage of the capacitor C5 is smaller than the voltage divided by the resistors R10 and R11 connected to the non-inverting terminal + of the comparator IC04, the output of the comparator IC04 becomes high and the relay ( It does not affect the operation of RY1).

However, when charging is continued to the capacitor C5 and the charging voltage of the capacitor C5 input to the inverting terminal (-) of the comparator IC04 is greater than the voltage input to the non-inverting terminal (+) of the comparator IC04, The output of the comparator IC04 is turned low so that the fourth transistor Q4 of the main valve driver 50 and the sixth and seventh transistors Q6 and Q7 of the first and second auxiliary valve drivers are turned off. As a result, the operation of the relays RY1, RY2, and RY3 is stopped, and the operation of the main valve SV1 and the first and second auxiliary valves SVA and SVB is stopped.

Therefore, each valve is charged from the time when the operation of the compressor 10 is stopped until the charging of the capacitor C5 occurs and the charging voltage of the capacitor C5 becomes larger than the divided voltage by the voltage divider resistors R10 and R11. Will be opened. Accordingly, the high pressure side and the low pressure side of the refrigerant after the operation of the compressor 10 are balanced so that the pressure is balanced during the charging time of the capacitor C5 so that the device is not unreasonable.

As described in detail above, the driving control circuit of the air conditioner according to the present invention is the charge of the condenser C5 of the main valve driving unit 50 when the driving of the compressor is stopped because the driving of the indoor units of the room A and the room B are all off. By turning on each valve during the delay time determined by time, it is possible to prevent the pressure imbalance between the high pressure side and the low pressure side of the cooling cycle due to the sudden interruption of the refrigerant flow.

Claims (2)

Compressor 10 for compressing the refrigerant at high temperature and high pressure, a plurality of evaporators 12 and 13 connected in parallel to the compressor 10, and controls the flow of the refrigerant supplied to the evaporators 12, 13 The main valve SV1 and the first and second auxiliary valves SVA and SVB installed between the compressor 10 and the evaporators 12 and 13 and the compressor 10 are driven. The compressor 10 and the main valve according to the input of the operation start signal from the room A input unit and the room B input unit 20 and 30, and the room A input unit 20 and the room B input unit 30, respectively. SV1) and a load driving determiner 40 for outputting drive signals of the first and second subsidiary valves SVA (SVB) and a control signal from the load drive determiner 40 to control the valve when the compressor is driven. In the air conditioner for heating and cooling a plurality of rooms provided with a valve driving unit for controlling the opening and closing of the valve, the valve driving unit of the operation of the compressor (10) In order to close each valve after the delay time determined by the charging voltage of the capacitor after opening the main valve SV1 and the first and second auxiliary valves SVA and SVB, the load driving discriminating unit ( A fourth transistor (Q4) whose base terminal is connected to one output terminal of the load driving discriminating unit (40) so as to be driven on / off by a control signal outputted from (40); A relay (RY1) connected to the collector terminal of the fourth transistor (Q4) so as to be driven on / off by the fourth transistor (Q4) to control the driving of the main valve (SV1); First and second transistors Q1 driven on / off by receiving a control signal from the load driver determination unit 40; A third transistor (Q3) having a base terminal connected to a collector terminal of the first transistor (Q1) so as to be controlled according to on / off of the first and second transistors (Q1); A capacitor C5 connected to the collector terminal of the third transistor Q3 via a resistor R9; A comparator (IC04) having an inverting terminal (-) connected to the capacitor (C5) and a non-inverting terminal (+) connected to an intermediate tap between the voltage divider resistors (R10) and (R11); An anode terminal is connected to the output side of the comparator IC04, and the cathode terminal includes a diode D1 connected to the base terminal of the fourth transistor Q4. The air conditioner according to claim 1, wherein the load drive determining unit 40 outputs a high signal to one output terminal and a low signal to the other output terminal when at least one of chambers A and B requires air conditioning. The driving controller of the air conditioner, characterized in that both output a low signal when the operation is required, and both output a high signal if the air conditioning operation is not required for both chambers.