KR100187222B1 - Deodorizing device of airconditioner and its control method - Google Patents

Abstract

The present invention relates to an apparatus for removing an odor of an air conditioner and a control method thereof. The present invention relates to an air conditioner that performs cooling operation by circulating a refrigerant in order of a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger. An operation operation means for inputting a cooling operation stop signal of the air conditioner, an indoor piping humidity sensing means for sensing the humidity of the indoor heat exchanger, an indoor piping temperature sensing means for sensing the temperature of the indoor heat exchanger, and When the cooling operation stop signal is input from the operation operation means, the indoor heat exchanger humidity sensed by the indoor pipe humidity sensing means is compared with a preset humidity value to control the driving of the four-way valve, and by the indoor pipe temperature sensing means. Control means for controlling the operation of the compressor, the outdoor fan, and the indoor fan by comparing the sensed indoor heat exchanger temperature with a preset temperature value; Four-way valve driving means for switching the four-way valve from cooling to heating in accordance with the control of the control means, and drive means for controlling the compressor, the outdoor fan and the indoor fan on / off under the control of the control means do.

Description

Odor removing device of air conditioner and control method

1 is a cooling / heating cycle diagram of a general air conditioner.

2 is a control block diagram of an odor removing device of an air conditioner according to an embodiment of the present invention.

3 (a) to 3 (c) are flow charts showing the odor control operation procedure of the air conditioner according to the present invention.

* Explanation of symbols for main parts of the drawings

10: DC power supply means 15: operation operation means

20: control means 25: room temperature sensing means

30: indoor humidity detection means 35: indoor piping temperature detection means

40: indoor piping humidity detection means 45: A / D conversion means

50: four-way valve driving means 51: four-way valve

60: compressor driving means 61: compressor

70: louver motor driving means 71: louver motor

80: outdoor fan motor driving means 81: outdoor fan

90: indoor fan motor driving means 91: indoor fan

100: display means

The present invention relates to an odor removing device and a control method for removing odor generated by moisture in the indoor unit during operation of the air conditioner.

In general, in the case of heating in an inverter air conditioner (hereinafter referred to as an air conditioner) that also serves as heating and cooling, the four-way valve 51 is controlled by a controller (not shown), as shown by a dotted line (-) in FIG. The refrigerant is compressed by the compressor (61) → four-way valve (51) → indoor heat exchanger (52) → expansion valve (53) → heating expansion valve (54) → outdoor heat exchanger (55) → four-way valve (51) → compressor (61). To cycle).

On the other hand, in the case of cooling, as shown by the solid line (→) of FIG. 1, the four-way valve 51 is controlled to allow the refrigerant to pass through the compressor 61 → four-way valve 51 → outdoor heat exchanger 55 → one-way valve. (56) → expansion valve (53) → indoor heat exchanger (52) → four-way valve (51) → (61).

In the air conditioner for cooling and heating by the above-mentioned refrigeration cycle, the user inputs the operating conditions such as the set temperature (Ts), the set wind volume and the set wind direction desired by the user by operating the operation control unit provided on the control panel of the remote controller or the indoor unit. Then, when the operation switch is turned on, the indoor fan 91 and the louver motor are driven in accordance with the set air volume and the set wind direction, and the indoor temperature Tr detects a change in the indoor temperature at this time.

At this time, the indoor temperature Tr sensed by the indoor temperature detection unit is received from the control unit and compared with the set temperature (Ts) set by the user.

As a result of the comparison, the controller determines the operating frequency of the compressor 61 and the rotation speed of the outdoor fan 81 according to the difference between the indoor temperature Tr and the set temperature Ts to drive the outdoor unit (compressor, outdoor fan). .

That is, during the heating operation of the air conditioner, when the indoor temperature Tr is lower than the set temperature Ts, the compressor 61 and the outdoor fan 81 are driven, and the indoor temperature Tr is the set temperature Ts. In the above case, indoor heating was performed while the compressor 61 and the outdoor fan 81 were stopped.

On the other hand, during the cooling operation of the air conditioner, when the indoor temperature Tr is higher than the set temperature Ts, the compressor 61 and the outdoor fan 81 are driven, and the indoor temperature Tr is the set temperature Ts. In the following case, the compressor 61 and the outdoor fan 81 were stopped to perform indoor cooling while maintaining the indoor temperature and the humidity according to the operating conditions set by the user.

However, in the conventional air conditioner, when the operation switch is turned off during the cooling operation of the air conditioner, that is, the operation stop signal is input, the driving of the compressor 61, the outdoor fan 81, and the indoor fan 91 is stopped. Therefore, dew (moisture) forms in the indoor heat exchanger 52 due to the difference between the indoor temperature of the indoor unit heat exchanged by the indoor heat exchanger 52 and the temperature of the indoor air. As mold grows, it produces an unpleasant odor.

Thus, when the air conditioner is re-operated, there is a problem in that the odor generated by the dew is discharged into the room, thereby causing discomfort to the user.

Therefore, the present invention has been made to solve the above problems, an object of the present invention is to detect the indoor heat exchanger and humidity to remove the moisture formed in the indoor heat exchanger to remove the unpleasant odor emitted during the cooling operation The present invention provides an apparatus for removing an odor and a control method thereof.

In order to achieve the above object, the air conditioner of the air conditioner according to the present invention, in the air conditioner to perform the cooling operation by circulating the refrigerant in the order of the compressor, four-way valve, outdoor heat exchanger, expansion valve, indoor heat exchanger, An operation operation means for inputting a cooling operation stop signal of the air conditioner, an indoor piping humidity sensing means for sensing the humidity of the indoor heat exchanger, an indoor piping temperature sensing means for sensing the temperature of the indoor heat exchanger, and When the cooling operation stop signal is input from the operation operation means, the indoor heat exchanger humidity sensed by the indoor pipe humidity sensing means is compared with a preset humidity value to control the driving of the four-way valve, and by the indoor pipe temperature sensing means. Control means for controlling the operation of the compressor, the outdoor fan and the indoor fan by comparing the sensed indoor heat exchanger temperature with a preset temperature value; And four-way valve driving means for switching the four-way valve from cooling to heating according to the control signal from the control means, and driving to turn on / off the compressor, outdoor fan, and indoor fan according to the control signal from the control means. It is characterized by consisting of means.

In addition, according to the present invention, a method for removing odor of an air conditioner includes a switch-off judging step of judging whether an operation switch is turned off during a cooling operation of an air conditioner, and judging that the run-off switch is turned off in the switch-off judging step. When the humidity of the indoor heat exchanger is detected by comparing the humidity of the dehumidification start humidity set to the control means or more, and the humidity discrimination step in the humidity discrimination step, if the humidity of the indoor heat exchanger is higher than the dehumidification start humidity, the four-way valve Dehumidification operation step of switching to the heating to remove the moisture of the indoor heat exchanger, and during the dehumidification operation in the dehumidification operation step to detect the temperature of the indoor heat exchanger and to determine whether or not less than the temperature value preset in the control means If it is determined that the temperature of the indoor heat exchanger is less than the set temperature value in the temperature discrimination step and the temperature discrimination step Dehumidification to determine whether the pipe heating step of heating the indoor heat exchanger by driving a shaft and an outdoor fan and the humidity of the indoor heat exchanger heated in the pipe heating step to determine whether the dehumidification and dehumidification humidity less than the predetermined control means And a cooling operation step of performing a cooling operation by switching the four-way valve from heating to cooling if it is determined that the humidity of the indoor heat exchanger is less than the dehumidification and dehumidifying humidity in the dehumidification determination step.

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

As shown in FIG. 1, when the air conditioner is heated, when the refrigerant compressed in the gas state of high temperature and high pressure in the compressor 61 flows into the indoor heat exchanger 52 under the control of the four-way valve 51, The indoor heat exchanger (52) heats the air blown by the indoor fan (91) by cooling water or air at room temperature and cools it with a refrigerant at room temperature and high pressure, thereby discharging the warmed air (hot air) to the room to heat the air. Perform.

The refrigerant liquefied in the indoor heat exchanger (52) is decompressed to the low temperature and low pressure refrigerant through the expansion valve (53) and the heating expansion valve (54) and flows into the outdoor heat exchanger (55).

Therefore, in the outdoor heat exchanger 55, the refrigerant depressurized by the expansion valve 53 and the heating expansion valve 54 is cooled by heat exchange with air blown by the outdoor fan 81, and the outdoor heat exchanger 55 is cooled. The low-temperature low-temperature gas refrigerant is sucked back into the compressor 61 through the four-way valve 51 to form a refrigeration cycle that is repeatedly circulated as shown by the dotted line (---) of FIG. Do this.

On the other hand, when the air conditioner is cooled, if the refrigerant compressed in the gas state of high temperature and high pressure in the compressor 61 flows into the outdoor heat exchanger 55 under the control of the four-way valve 51, the outdoor heat exchanger 55 In the present invention, the gas refrigerant compressed at high temperature and high pressure is liquefied by forcibly cooling with air blown by the outdoor fan 81.

The low temperature and high pressure liquid refrigerant liquefied in the outdoor heat exchanger (55) passes through an expansion valve (53) which expands to the evaporation pressure through the one-way valve (56) and is decompressed to a low-temperature, low-pressure free refrigerant to obtain an indoor heat exchanger (52). Flows into.

Therefore, in the indoor heat exchanger (52), when the freeze refrigerant having a low pressure voltage reduced in the expansion valve (53) evaporates and vaporizes through a plurality of pipes, it takes away heat from the air blown by the indoor fan (91). After cooling the air, the cooled air (cold air) is discharged to the room for cooling, and the low-temperature low-pressure gas refrigerant cooled by the indoor heat exchanger 52 is again sucked into the compressor 61 and the solid line of FIG. As shown by (→), indoor cooling is performed while forming a recirculating refrigeration cycle.

A block diagram of an apparatus for controlling the heating and cooling by the refrigeration cycle as described above will be described with reference to FIG.

As shown in FIG. 2, the DC power supply unit 10 receives a power supply voltage of a commercial AC power supplied from an AC power input terminal (not shown) and converts it into a predetermined DC voltage required for the operation of the air conditioner. In addition, the operation operation means 15 is a plurality of function keys to input the operating conditions (cooling, heating, cleaning, dehumidification and blowing operation, etc.), the set temperature (Ts), the set air volume and the set direction of the air conditioner desired by the user. It is provided on the control panel and the remote control of the air conditioner.

The control means 20 receives the DC voltage output from the DC power supply means 10 to initialize the air conditioner, as well as according to the operation condition and the operation / stop signal input by the operation operation means 15. As a microcomputer for controlling the overall air conditioning operation of the air conditioner, the control means 20 is the indoor heat exchanger 52 according to the humidity of the indoor heat exchanger 52 sensed by the indoor pipe humidity sensing means described later. The four-way valve 51 is controlled to remove moisture condensed in the air, thereby switching the refrigeration cycle from cooling to heating.

And, the indoor temperature detecting means 25 is not shown of the air conditioner to control the indoor temperature to the temperature (Ts) set by the user by the operation operation means 15 to perform the air conditioning operation of the air conditioner Senses the temperature (Tr) of the indoor air sucked through the non-inlet and outputs it to the control means (20), and the indoor humidity detecting means (30) is sucked through the air inlet during the cooling operation of the air conditioner. The humidity Hp of the air is sensed and output to the control means 20.

The indoor pipe temperature detecting means 35 detects the pipe temperature Tp of the indoor heat exchanger 52 that changes during the cooling operation of the air conditioner, that is, the refrigerant temperature passing through the indoor heat exchanger 52. Output to the control means 20, the indoor piping humidity detection means 40 is the humidity of the indoor heat exchanger 52 that is changed by the moisture formed in the indoor heat exchanger 52 during the cooling operation of the air conditioner ( Hp) is detected and output to the control means 20.

In addition, the A / D conversion means 45 is the room temperature (Tr) detected by the room temperature detection means 25, the room humidity (Hp) detected by the indoor humidity detection means 30, the indoor piping The analog data of the indoor piping temperature Tp sensed by the temperature sensing means 35 and the humidity Hp of the indoor heat exchanger 52 sensed by the indoor piping humidity sensing means 40 are input to each of them. It converts and outputs it to the said control means 20.

The four-way valve driving means 50 receives the control signal output from the control means 20 so as to change the flow path through which the refrigerant circulates according to the operating conditions (cooling or heating) input by the driving operation means 15. The drive control of the valve 51, the compressor driving means 60 is the temperature Ts set by the user by the operation operation means 15 and the room temperature Tr sensed by the room temperature sensing means 25. Drive control of the compressor 61 receives the control signal output from the control means 20 according to the difference.

In addition, the louver motor driving means 70 controls the discharge direction of the air heat-exchanged to the indoor heat exchanger 52 up or down or left and right according to the wind direction set by the user by the driving operation means 15 ( Receiving a control signal output from the 20) drive control the louver motor 71, the outdoor fan motor driving means 80 senses the temperature (Ts) and the indoor temperature set by the user by the driving operation means (15) According to the difference in the room temperature (Tr) detected by the means 25 receives the control signal output from the control means 20 receives the control signal outputted to the air heat exchanged in the outdoor heat exchanger 55 to the outdoor The outdoor fan 81 is controlled to drive by controlling the rotation speed of the outdoor fan motor to blow air.

In the drawing, the indoor fan motor driving means 90 receives the control signal output from the control means 20 according to the air volume set by the user by the driving operation means 15 and the indoor heat exchanger 52. Drive the indoor fan 91 by controlling the rotational speed of the indoor fan motor to blow the heat exchanged air (cold or warm air) into the room, and the display means 100 is controlled according to the control of the control means 20. In addition to displaying the operating conditions and the set temperature Ts set by the user by the driving operation means 15, the indoor temperature Tr sensed by the indoor temperature sensing means 25, the indoor humidity sensing means ( The indoor humidity and the operating condition of the air conditioner detected by 30) are displayed.

Hereinafter, the operation and effect of the odor removing device and control method of the air conditioner configured as described above will be described.

3 (a) to 3 (c) are flowcharts showing the odor control operation procedure of the air conditioner according to the present invention. In FIGS. 3 (a) to 3 (c), S denotes a step.

First, when power is applied to an air conditioner, the DC power supply unit 10 receives commercial AC power from an AC power input terminal (not shown) and converts the AC power into a predetermined DC voltage required for driving the air conditioner. Output to the control means 20.

Therefore, in step S1, the DC voltage output from the DC power supply unit 10 is inputted from the control means 20, and the air conditioner is initialized. In step S2, the operating conditions (cooling and heating) of the air conditioner operated by the user. , Dehumidification, clean and blowing operation, etc.), the set temperature Ts and the indoor discharge air volume are inputted by the driving operation means 15.

At this time, the display means 100 displays the operating conditions and the set temperature Ts inputted by the driving operation means 15 under the control of the control means 20.

Subsequently, in step S3, it is determined by the user whether the operation switch of the operation operation means 15 is turned on, and if the operation switch is not turned on (NO), the air conditioner waits for operation until the operation switch is turned on. The operation below Step S3 is repeatedly performed while maintaining the state.

As a result of the discrimination in step S3, when the operation switch is turned on (YES), the flow advances to step S4, and the control means 20 determines whether the operation condition input by the operation operation means 15 is 'cooling operation'. If it is not the "cooling operation" (No), the flow advances to step S41, and returns to the step S4 while performing the blowing operation of the air conditioner, and repeats the operation of the step S4 or less.

As a result of the determination in step S4, when the operation condition input by the operation operation means 15 is 'cooling operation' (Yes), the four-way valve 51 is performed to perform the cooling operation of the air conditioner. In order to control, in step S5, the control means 20 outputs the control signal for controlling the four-way valve 51 to the four-way valve drive means 50. FIG.

Accordingly, in the four-way valve driving means 50, the refrigerant is driven by the four-way valve 51 under the control of the control means 20, so that the refrigerant is compressed from the compressor 61 to the four-way valve 51 to the outdoor heat exchanger 55 to the one-way valve. (56) → expansion valve (53) → indoor heat exchanger (52) → four-way valve (51) → (61).

At this time, in step S6, the control means 20 outputs a control signal for driving the indoor fan 91 to the indoor fan motor driving means 90.

Therefore, the indoor fan motor driving means 90 receives the control signal output from the control means 20 according to the set air volume input by the driving operation means 15 to control the rotation speed of the indoor fan motor to control the indoor fan. Drive 91.

When the indoor fan 91 is driven, the indoor air begins to be sucked into the air conditioner through an inlet not shown. In step S7, the indoor temperature sensing means (Tr) of the indoor air sucked through the inlet is detected. The control means 20 detects at 25 and receives analog data of the room temperature Tr sensed by the room temperature sensing means 25 from the A / D conversion means 45 and converts it to digital. Output to

Subsequently, in step S8, the control means 20 adjusts the wind direction angle of the wind direction control louver to adjust the direction of the air discharged through the discharge port not shown according to the set wind direction inputted by the driving operation means 15. The control signal is output to the louver motor driving means 70.

Accordingly, the louver motor driving means 70 receives the control signal output from the control means 20 and drives the louver motor 71 to adjust the wind direction angle of the wind direction control louver according to the wind direction set by the user. In S9, it is determined whether the room temperature Tr sensed by the room temperature sensing means 25 is greater than the set temperature Ts input by the driving operation means 15.

As a result of the discrimination in step S9, if the room temperature Tr is not greater than the set temperature Ts (NO), there is no need to cool the room, and the process returns to step S7 to continue the room temperature Tr. While sensing, the operation of step S7 or less is repeated.

In addition, when the determination result in step S9 indicates that the indoor temperature Tr is larger than the set temperature Ts (YES), the indoor air must be cooled. In step S10, the control means 20 is equal to the indoor temperature Tr. The operating frequency of the compressor 61 is determined according to the difference of the set temperature Ts, and a control signal for driving the compressor 61 is output to the compressor driving means 60, while the room temperature Tr and the set temperature ( The rotation speed of the outdoor fan motor is determined according to the difference of Ts), and a control signal for driving the outdoor fan 81 is output to the outdoor fan motor driving means 80.

Accordingly, the compressor driving means 60 drives the compressor 61 according to the operating frequency determined by the control means 20, and the outdoor fan motor driving means 80 outdoors according to the rotation speed determined by the control means 20. The fan 81 is driven.

When the compressor 61, the outdoor fan 81, and the indoor fan 91 are driven, in step S11, the refrigerant compressed by the compressor 61 into a gas of high temperature and high pressure is supplied to the outdoor heat exchanger through the four-way valve 51. At 55, the outdoor heat exchanger 55 liquefies the gas refrigerant compressed at high temperature and high pressure by forced cooling with air blown by the outdoor fan 81.

The low temperature and high pressure liquid refrigerant liquefied in the outdoor heat exchanger (55) passes through an expansion valve (53) which expands to the evaporation pressure through the one-way valve (56) and is decompressed to a low-temperature, low-pressure free refrigerant to obtain an indoor heat exchanger (52). Flows into.

Therefore, in the indoor heat exchanger (52), when the low-temperature, low-pressure free refrigerant reduced in the expansion valve (53) evaporates and vaporizes through a plurality of pipes, the heat is removed from the air blown by the indoor fan (91). After cooling the air, the cooled air (cold air) is discharged to the room for cooling, and the low-temperature low-pressure gas refrigerant cooled by the indoor heat exchanger 52 is again sucked into the compressor 61 and the solid line of FIG. As shown by (→), indoor cooling is performed while forming a recirculating refrigeration cycle.

At this time, in step S12, it is determined whether the operation switch of the operation operation means 15 is turned off during the cooling operation of the air conditioner. If the operation switch is not turned off (NO), the process returns to the step S11 and continues. By performing the cooling operation of the air conditioner, the steps S11 and below are repeatedly performed.

As a result of the discrimination in step S12, when the operation switch is turned off (YES), the flow advances to step S13, after which the operation switch is turned off for a predetermined time (the lowest possible moisture may form in the indoor heat exchanger when the operation is stopped during the cooling operation). Time) has elapsed.

This is because when the user switches the driving switch back on immediately after the operation switch is turned off and restarts the cooling operation of the air conditioner, it is not necessary to perform the dehumidification operation for removing moisture accumulated in the indoor heat exchanger 52. It is to determine whether a predetermined time has elapsed when the operation switch is turned off.

As a result of the determination in step S13, when a predetermined time has elapsed (YES), it is determined that the minimum time that moisture can form in the indoor heat exchanger 52 has elapsed, and in step S14 the cooling operation of the air conditioner is performed. Humidity (Hp) of the indoor heat exchanger (52) that changes at a stop is detected by the indoor pipe humidity detecting means (40), and the indoor heat exchanger (52) humidity detected by the indoor pipe humidity detecting means (40). The analog data of Hp) is inputted from the A / D conversion means 45 and converted into digital, and output to the control means 20.

Accordingly, in step S15, the indoor pipe humidity Hp sensed by the indoor pipe humidity detection means 40 is dehumidified by the humidity in the indoor heat exchanger H1 (indoor heat exchanger), which is set in advance in the control means 20. If the indoor piping humidity (Hp) is higher than the dehumidification start humidity (H1) (YES), moisture is formed on the surface of the indoor heat exchanger (52) to breed bacteria or mold. In order to perform the dehumidification operation of the air conditioner, the control means 20 determines that the control unit 20 sends a control signal to the four-way valve means 50 for switching the refrigeration cycle from cooling to heating. Output

Accordingly, in the four-way valve driving means 50, the refrigerant is driven by the four-way valve 51 under the control of the control means 20, so that the refrigerant is compressed from the compressor 61 to the four-way valve 51 to the indoor heat exchanger 52 to the expansion valve. (53) → heating expansion valve (54) → outdoor heat exchanger (55) → four-way valve (51) → compressor (61).

Subsequently, in step S17, it is determined whether the operation switch of the operation operation means 15 is turned on during the dehumidification operation of the air conditioner, and when the operation switch is turned on (YES), the dehumidification operation of the air conditioner is completed. Since the cooling operation needs to be restarted while returning to the step S5, the operation of the step S5 or less is repeatedly performed while the refrigeration cycle is switched to the cooling.

As a result of the discrimination in step S18, when the operation switch is not turned on (NO), the dehumidification operation must be continued. In step S18, the piping of the indoor heat exchanger 52 that changes during the dehumidification operation of the air conditioner is The temperature Tp is sensed by the indoor pipe temperature detecting means 35, and the analog data of the pipe temperature Tp sensed by the indoor pipe temperature detecting means 35 is received by the A / D conversion means 45. This is converted into digital and output to the control means 20.

Therefore, in step S19, the moisture in the indoor heat exchanger to remove the dehumidification pipe temperature Tps in which the indoor pipe temperature Tp sensed by the indoor pipe temperature detecting means 35 is preset in the control means 20 is removed. Determine whether it is smaller than the pipe temperature).

As a result of the determination in step S19, when the indoor pipe temperature Tp is not smaller than the dehumidification pipe temperature Tps (NO), the moisture formed in the indoor heat exchanger 52 cannot be removed. Proceeding to S20, the control means 20 outputs a control signal for driving the compressor 61 and the outdoor fan 81 to the compressor drive means 60 and the outdoor fan motor drive means 80 and at the same time the indoor fan 91 ) Outputs a control signal for stopping driving of the indoor fan motor driving means (90).

Accordingly, the compressor driving means 60 and the outdoor fan motor driving means 80 drive the compressor 61 and the outdoor fan 81 under the control of the control means 20, and the indoor fan motor driving means 90 In FIG. 2, the indoor heat exchanger 52 for removing moisture from the indoor heat exchanger 52 by stopping the driving of the indoor fan 91 and heating the indoor heat exchanger 52 under the control of the control means 20. Continue heating operation.

In addition, as a result of the determination in step S19, when the indoor pipe temperature Tp is smaller than the dehumidification pipe temperature Tps (YES), it is a temperature condition in which moisture formed in the indoor heat exchanger 52 can be removed. Proceeding to step S21, the control means 20 sends a control signal for stopping the drive of the compressor 61, the outdoor fan 81 and the indoor fan 91 to the compressor drive means 60 and the outdoor fan motor drive means 80. Output to the indoor fan motor driving means (90).

Accordingly, in the compressor driving means 60, the outdoor fan motor driving means 80, and the indoor fan motor driving means 90, the compressor 61, the outdoor fan 81, and the indoor fan are controlled by the control means 20. The drive of the indoor heat exchanger 52 for removing moisture formed in the indoor heat exchanger 52 by stopping the driving of the 91 is terminated.

Subsequently, in step S22, the humidity Hp of the indoor heat exchanger 52 which is changed at the time of heating the indoor heat exchanger 52 according to the heating cycle of the refrigerating cycle is sensed by the indoor piping humidity detecting means 40, and the indoor The analog data of the humidity (Hp) of the indoor heat exchanger (52) sensed by the pipe humidity detecting means (40) is input from the A / D conversion means (45), and converted into digital and outputted to the control means (20). .

Therefore, in step S23, the moisture in the indoor heat exchanger (H2; dehumidification / dehumidification humidity H2) in which the indoor pipe humidity Hp sensed by the indoor pipe humidity detection means 40 is preset in the control means 20 is completely removed. If the indoor piping humidity (Hp) is not less than the dehumidification dehumidification (H2) (NO), the moisture formed on the surface of the indoor heat exchanger 52 is not completely removed. In order to continue performing the dehumidification operation, it returns to said step S17 and repeats the operation of step S17 or less.

As a result of the determination in step S23, when the indoor piping humidity Hp is smaller than the dehumidification and dehumidification humidity H2 (YES), it is determined that the moisture formed on the surface of the indoor heat exchanger 52 is completely removed. The means 20 returns to the step S5 while ending the dehumidification operation of the air conditioner, and repeats the operation of step S5 or less.

On the other hand, as a result of the determination in step S13, when the predetermined time has not elapsed (NO), it is determined that the minimum time that moisture can form in the indoor heat exchanger 52 has not elapsed, and the control means (step S25) 20 is a control signal for stopping the operation of the compressor 61, the outdoor fan 81 and the indoor fan 91 compressor driving means 60, outdoor fan motor driving means 80, indoor fan motor driving means ( Output to 90).

Accordingly, in the compressor driving means 60, the outdoor fan motor driving means 80, and the indoor fan motor driving means 90, the compressor 61, the outdoor fan 81, and the indoor fan are controlled by the control means 20. While the drive of 91 is stopped, the process returns to the step S5 and the operation of the step S5 or less is repeated.

As a result of the determination in step S15, when the indoor piping humidity Hp is not equal to or higher than the dehumidification start humidity H1 (NO), moisture for starting the dehumidification operation is applied to the surface of the indoor heat exchanger 52. It is judged that it is not formed, and it progresses to the said step S25 and repeats the operation of step S25 or less.

As described above, according to the apparatus for removing an odor of an air conditioner and a control method thereof according to the present invention, the humidity of the indoor heat exchanger is sensed to remove moisture from the indoor heat exchanger, thereby removing unpleasant odors emitted during cooling operation. It has a great effect.

Claims (2)

An air conditioner for cooling operation by circulating a refrigerant in the order of a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, comprising: operating operation means for inputting a cooling operation stop signal of the air conditioner; Indoor piping humidity sensing means for sensing the humidity of the heat exchanger, indoor piping temperature sensing means for sensing the temperature of the indoor heat exchanger, and a cooling operation stop signal is input by the indoor piping humidity sensing means when the operating operation means is input By comparing the detected humidity of the indoor heat exchanger with a predetermined dehumidification start humidity or more, if the dehumidification start humidity is higher, a control signal for switching the four-way valve to heating is output and the indoor heat exchange detected by the indoor pipe temperature sensing means. Compares whether the temperature is less than the predetermined dehumidification pipe temperature and operates the compressor, the outdoor fan, and the indoor fan. A control means for outputting a control signal for controlling the engine; a four-way valve driving means for switching the four-way valve from cooling to heating in accordance with a control signal from the control means; Deodorizer of the air conditioner, characterized in that the drive means for controlling the indoor fan on / off. A switch-off determination step of determining whether the operation switch is turned off during the cooling operation of the air conditioner, and if it is determined that the operation switch is turned off in the switch-off determination step, the humidity of the indoor heat exchanger is sensed to start the dehumidification preset by the control means. Dehumidification operation step of determining whether the humidity is abnormal or not, and if the humidity of the indoor heat exchanger is determined to be higher than the dehumidification start humidity in the humidity determination step, the four-way valve is switched from cooling to heating to remove the humidity of the indoor heat exchanger And a temperature discrimination step of detecting a temperature of the indoor heat exchanger during the dehumidification operation in the dehumidification operation step to determine whether the dehumidification piping temperature is smaller than the predetermined dehumidification pipe temperature, and the indoor heat exchanger temperature in the temperature discrimination step. Is determined to be lower than the dehumidification piping temperature, the compressor and the outdoor fan are driven to Dehumidification determination step of detecting the pipe heating step of heating the exchanger, and the humidity of the indoor heat exchanger heated in the pipe heating step to determine whether less than the dehumidification dehumidification humidity set in the control means and the dehumidification determination step If the indoor heat exchanger humidity is determined to be less than the dehumidification dehumidification humidity, switching the four-way valve from heating to cooling to the cooling operation return step of the air conditioner, characterized in that consisting of.