JPH10318592A - Air conditioner - Google Patents

Abstract

(57) [Problem] To improve the accuracy of determining the degree of contamination of an electrode of an air purifier by integrating only the time during which the electrode of the air purifier is substantially contaminated. An air purifier for purifying air sucked from suction ports and an air chamber for discharging air-conditioned air purified by an air purifier and heat-exchanged by an indoor heat exchanger from an air outlet. It has a fan 6, a fan rotation time integration means 33 for integrating the rotation time of the indoor fan, and an electrode contamination determination means 34 for determining the contamination of the electrode of the air purifier based on the time integrated by the integration means. In the air conditioner, short circuit determining means 32 for determining whether or not a short circuit airflow in which the air-conditioning air blown out from the outlet is short-circuited and flows into the suction port is formed, and the short circuit airflow is determined by the determining means. When it is determined that is formed, accumulation inhibition means for inhibiting the accumulation of the rotation time of the indoor fan by the fan rotation time accumulation means, The provision.

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 more particularly, to an air conditioner having a display for displaying the degree of contamination of electrodes of an air purifier.

[0002]

2. Description of the Related Art Generally, an air conditioner of this type includes a refrigeration cycle for circulating a refrigerant by sequentially connecting a compressor, a four-way valve, an outdoor heat exchanger, an expansion mechanism, and an indoor heat exchanger by a refrigerant pipe. By switching the four-way valve, the outdoor heat exchanger functions as a condenser and the indoor heat exchanger functions as an evaporator, thereby cooling the room. In addition, with the cooling operation, the moisture in the air is condensed in the indoor heat exchanger, so that the room can be dehumidified. Furthermore, by making the outdoor heat exchanger function as an evaporator and the indoor heat exchanger as a condenser, the room can be heated.

[0003] The indoor air is purified by an indoor fan through an electrode of an air purifier and an indoor filter in order to cool or heat while removing dirt and smell, and then sent to an indoor heat exchanger for heat exchange. Is done. When the degree of contamination of the electrodes of the air purifier becomes large, the air purifier check indicator lamp or the like of the air conditioner main body is turned on to indicate the necessity of cleaning the air purifier. The degree of contamination of the electrode of the air purifier is determined by accumulating the rotation time of the indoor fan by the fan rotation time accumulation means and by the electrode contamination determination means based on the accumulated time.

[0004] On the other hand, the indoor air that has been heat-exchanged by the indoor heat exchanger is blown out of the air outlet to prevent it from being directly dissipated toward people in the room or to increase the efficiency of heat exchange. The air-conditioning air (cooling air, dehumidifying air, heating air, etc.) may be operated so as to form a short-circuit airflow that flows directly into the suction port.

[0005]

The conventional fan rotation time accumulating means always accumulates the rotation time of the indoor fan during the rotation of the indoor fan, even when such a short circuit airflow is formed, The degree of contamination of the electrode of the air purifier was determined by the electrode contamination determination means based on the accumulated time.

However, when a short circuit airflow is formed, the room air flowing from the suction port is already purified once after passing through the air purifier and the indoor filter once, and is blown out. Since it is returned, the degree of soiling the electrodes of the air purifier is low. Therefore, even when a short circuit airflow is formed, the rotation time of the indoor fan is integrated, and the degree of contamination of the electrode of the air purifier is determined based on the accumulated time. Nevertheless, the filter check display lamp was lit early, and when the indoor filter was inspected due to the display, it was found that the filter was not yet dirty enough to require cleaning.

On the other hand, when a short circuit airflow is formed, a method of increasing the judgment integration time until the emptying check display lamp is lit is considered. However, in this case, the emptying check display lamp is reversed. Was too slow.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art and to improve the accuracy of determining the degree of contamination of the electrode of the air purifier by integrating only the time during which the electrode of the air purifier is substantially contaminated. It is to provide an air conditioner that can be improved.

[0009]

In order to achieve the above object, an air conditioner according to the first aspect of the present invention has an air purifier for purifying air sucked from a suction port and a purifier using the air purifier. An indoor fan that blows out the air-conditioning air heat-exchanged by the indoor heat exchanger from the outlet, a fan rotation time integration unit that integrates the rotation time of the indoor fan, and a time that is integrated by the integration unit. And an electrode contamination determining means for determining the contamination of the electrodes of the air purifier, wherein a short-circuit airflow is formed in which the air-conditioning air blown out from the outlet is short-circuited and flows into the inlet. Short circuit determining means for determining whether or not a short circuit airflow is formed by the determining means. And integrating inhibiting means for inhibiting the accumulation of rotation time of the indoor fan according to the rotation time integrating means, characterized in that the provided.

An air conditioner according to a second aspect of the present invention is characterized in that the accumulation inhibiting means inhibits the accumulation of the indoor fan rotation time by the fan rotation time accumulation means even during the dehumidifying operation. .

According to a third aspect of the present invention, there is provided an air conditioner, wherein the accumulation inhibiting means inhibits the accumulation of the indoor fan rotation time by the fan rotation time accumulation means when the indoor fan rotation speed is equal to or lower than a predetermined value. There is a feature.

In the air conditioner according to a fourth aspect of the present invention, the short circuit determining means determines whether or not a short circuit airflow is formed based on an angle of a wind direction changing plate for adjusting a wind direction of the wind blown from the outlet. Is determined.

[0013]

According to the air conditioner of the present invention, when the short circuit airflow judging means judges that the short circuit airflow of the air for air conditioning is formed, the air passing through the electrode of the air purifier. Therefore, the accumulation of the indoor fan rotation time by the fan rotation time integration means is prohibited by the integration prohibition means.

On the other hand, when it is determined that the short circuit airflow is not formed, the air blown out from the air outlet circulates in the room to be air-conditioned, so that the electrode of the air purifier easily generates dirt. For this reason, the fan rotation time integrating means integrates based on the rotation time of the indoor fan, and based on the integrated time, the degree of contamination of the electrode of the air purifier is determined by the electrode contamination determining means. Therefore, it is possible to improve the determination accuracy of electrode contamination of the air purifier. In the air conditioner of the present invention, the short circuit airflow may be formed in any of the cooling operation mode, the heating operation mode, and the dehumidification operation mode, and anyway, the short circuit airflow is formed. Applicable if applicable.

In the air conditioner according to the second aspect of the present invention, when the air conditioner is operated in the dehumidifying operation mode, the rotational speed of the indoor fan is kept low. Increase. For this reason, when the short circuit airflow is formed and the operation is performed in the dehumidifying operation mode, the accumulation of the indoor fan rotation time by the fan rotation time accumulation means is prohibited by the accumulation prohibition means. Therefore, it is possible to improve the determination accuracy of electrode contamination of the air purifier.

In the air conditioner according to the third aspect of the present invention, when the rotation speed of the indoor fan is low, the short circuit airflow causes a large amount of the air to return to the suction port in a short-circuited manner, and the circulation flow to the room is reduced. Therefore, the electrode of the air purifier is less contaminated. For this reason, when a short circuit is formed and the rotation speed of the indoor fan is operated at a predetermined rotation speed or less, the integration of the rotation time of the indoor fan is prohibited by the integration prohibition means. For this reason, the accuracy of determination of electrode contamination of the air purifier can be improved.

In the air conditioner according to the fourth aspect of the present invention, the short circuit determining means determines whether or not the short circuit airflow is formed based on the angle of the wind direction change plate, thereby improving the easiness and accuracy of the determination. be able to.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In these drawings, the same or corresponding parts are denoted by the same reference numerals.

FIG. 2 is a longitudinal sectional view of the indoor unit 1 of the air conditioner according to the first embodiment of the present invention, FIG. 3 is a schematic diagram showing a refrigeration cycle including the indoor unit 1 and a control system,
FIG. 4A is an external perspective view of the indoor unit 1, and FIG. 4B is an enlarged view of a portion b in FIG. The indoor unit 1 has a suction port 2 for indoor air on the front surface thereof, an upper suction port 3 for indoor air on the upper surface, and air conditioning air (cooling air, dehumidifying air, heating air, etc.) on the lower front surface. ) Is formed.

In the indoor unit 1, there is formed a ventilation passage 5 communicating from both the suction ports 2, 3 to the air outlet 4. An air cleaner 6a provided with an electrode 6b and an indoor filter 6 are provided inside the suction ports 2 and 3 in the ventilation path 5, and a main indoor heat exchanger 8 and an auxiliary indoor heat exchanger 7 are provided inside the indoor filter 6. Is arranged. Further, a cross flow type indoor fan 9 is disposed inside the heat exchangers 7 and 8.

The main indoor heat exchanger 8 is divided into a first heat exchanger 8a and a second heat exchanger 8b.
b is arranged in a substantially inverted V-shape so as to surround the indoor fan 9. The first heat exchanger 8a faces the suction port 2 on the front surface, and the second heat exchanger 8a
The heat exchanger 8 b faces the upper suction port 3. And the second
The auxiliary indoor heat exchanger 7 is disposed between the heat exchanger 8b and the upper suction port 3, that is, at a position upstream of the second heat exchanger 8b in the indoor air suction flow path.

In a space between the heat exchangers 8a and 8b and the indoor fan 9, an electric heater 10 and a drainage member 11 are provided. The electric heater 10 is for heating the air passed through the heat exchangers 8a and 8b as necessary. The drain unit 11 is for preventing the drain from directly falling on the electric heater 10 even if the drain drips from the heat exchangers 8a and 8b.

The drain receiving portion 1 is located below the first heat exchanger 8a.
2 are formed. A drain receiving portion 12 is also formed below the second heat exchanger 8b and the auxiliary indoor heat exchanger 7.

Although the radiation fins of the first heat exchanger 8a and the radiation fins of the second heat exchanger 8b are in contact with each other,
A gap is secured between the radiating fins of the heat exchanger 8b and the radiating fins of the auxiliary indoor heat exchanger 7, and the two radiating fins are in non-contact, that is, in a thermally separated state.

When the indoor fan 9 rotates, the indoor air is sucked into the indoor unit 1 through the suction port 2 and the upper suction port 3, respectively. The suction air from the front suction port 2 is purified by passing through the electrode 6b of the air purifier 6a,
Furthermore, it flows to the indoor fan 9 side through the first heat exchanger 8a. After passing through the filter 6, the suction air from the upper suction port 3 first passes through the auxiliary indoor heat exchanger 7, and then flows through the second heat exchanger 8 b toward the indoor fan 9.

In the ventilation path 5, a left and right wind direction change plate 13 is provided at a position facing the outlet 4 on the downstream side of the indoor fan 9. The left and right wind direction change plate 13 is for adjusting the direction of the blown wind in the left and right direction of the indoor unit 1.
It is a motor drive type.

A plurality of, for example, a pair of upper and lower wind direction change plates 14 and 14 are arranged vertically below the left and right wind direction change plates 13. The vertical wind direction change plates 14 and 14 are driven by a single motor (not shown) in conjunction with each other, and rotate clockwise during operation to rotate the outlet 4 and counterclockwise when operation is stopped. The air outlet 4 is closed to prevent dust from entering the indoor unit 1.

As shown by a dotted line in FIG. 2, a state in which air blown out from the outlet 4 flows into the inlet 2 in a short-circuit manner is referred to as a short circuit airflow 15. Short circuit airflow 15 is a vertical wind direction change plate 1
It is formed by operating the direction of 4 so as to face the dotted line position in FIG. At this time, in order to promote the formation of the short circuit airflow 15, the left and right wind direction change plates 13 are operated so that the blown wind is concentrated at the center in the left and right direction.

On the other hand, as shown in FIG.
Each indoor heat exchanger 7, 8a, 8b is connected to a compressor 18 via a four-way valve 17 by each refrigeration cycle pipe 16. An outdoor heat exchanger 19 is connected to the discharge port of the compressor 18 via a four-way valve 17, and an expansion mechanism, for example, an electric expansion valve 20, is connected to the outdoor heat exchanger 19.
The degree of opening of the electric expansion valve 20 changes continuously according to the number of input drive pulses. One end of the auxiliary indoor heat exchanger 7 is connected to the electric expansion valve 20 via a pipe, and the other end of the auxiliary indoor heat exchanger 7 is connected to the main indoor heat exchanger 8 (the first heat exchanger 8a and the second heat exchanger 8b). Is connected to the pipe. The suction port of the compressor 1 is connected to the main indoor heat exchanger 8 via the four-way valve 17. Thus, a heat pump refrigeration cycle capable of cooling, dehumidifying, and heating is configured.

During the cooling operation, the refrigerant is discharged from the compressor 18 to the four-way valve 17 as indicated by solid arrows in FIG. 3, and the refrigerant is further discharged from the four-way valve 17 to the outdoor heat exchanger 19 and the electric expansion valve 2.
0, a cooling cycle is formed in which the refrigerant flows sequentially to the auxiliary indoor heat exchanger 7 and the main indoor heat exchanger 8 and passes through the main indoor heat exchanger 8 and returns to the compressor 18 again through the four-way valve 17. At this time, the outdoor heat exchanger 19 functions as a condenser, and the auxiliary indoor heat exchanger 7 and the main indoor heat exchanger 8 function as an evaporator.

During the dehumidifying operation, a dehumidifying cycle in which the refrigerant flows in the same direction as during cooling is formed.

During the heating operation, the four-way valve 17 is switched so that the refrigerant discharged from the compressor 18 flows from the four-way valve 17 through the main indoor heat exchanger 8 and the auxiliary indoor heat exchange as indicated by the broken line arrow in the figure. Unit 7, electric expansion valve 20, outdoor heat exchanger 19
To the four-way valve 1 through the outdoor heat exchanger 19.
A cycle is formed through 7 and back to the compressor 18. That is, the auxiliary indoor heat exchanger 7 and the main indoor heat exchanger 8 function as a condenser, and the outdoor heat exchanger 19 functions as an evaporator.

As shown in FIG. 2 and FIG. 3, a heat exchanger temperature sensor 21 is attached to a heat exchange pipe on the outlet side of the auxiliary indoor heat exchanger 7, and heat in an intermediate portion of the first heat exchanger 8a is provided. The heat exchanger temperature sensor 22 is attached to the exchange pipe.

An indoor temperature sensor 23 is provided in a flow path for indoor air from the inlet 2 to the main indoor heat exchanger 8. An outdoor fan 24 is provided near the outdoor heat exchanger 19. The outdoor fan 24 blows outdoor air to the outdoor heat exchanger 19.

The commercial AC power supply 25 has an inverter circuit 2
6. The speed control circuits 27 and 28 and the control unit 29 are connected. Then, the control unit 29 controls the inverter circuit 26, the speed control circuits 27 and 28, the wind direction transmission plate motors 13M and 14
M, heat exchanger temperature sensors 21 and 22, indoor temperature sensor 2
3. The electric heater 10, the four-way valve 17, the electric expansion valve 20, and the light receiving unit 30 are connected.

The inverter circuit 26 rectifies the power supply voltage, converts the power supply voltage into an alternating current having a frequency F (and voltage) according to a command from the control unit 29, and outputs the alternating current. This output is the drive power of the drive motor (compressor motor) of the compressor 18.

The speed control circuit 27 includes the outdoor fan motor 2
By controlling the supply of the power supply voltage to the 4M (for example, energizing phase control), the rotation speed of the outdoor fan motor 24M (the amount of air blown by the outdoor fan 24) is set to a speed according to a command from the control unit 29. The speed control circuit 28 controls the indoor fan motor 9
Supply control of power supply voltage to M (for example, conduction phase control)
With this, the speed of the indoor fan motor 9M (the amount of air blown by the indoor fan 9) is set to a speed according to a command from the control unit 29.

The light receiving section 30 receives infrared light transmitted from a remote control type operation device (hereinafter, abbreviated as a remote controller) 31 and supplies a control signal superimposed on the infrared light to the control section 29. It is.

The control unit 29 controls the entire air conditioner in accordance with control commands set by the remote controller 31 or the like, forms a cooling cycle, a dehumidification cycle, or a heating cycle, and performs a cooling operation, a dehumidification operation, or a heating operation. One of the operations is selectively executed, and the upper and lower wind direction changing plates 14 and 1 are controlled by controlling the wind direction changing plate motor 14M and the like.
4 or the like to form a short circuit airflow 15 in which air blown out from the outlet 4 flows into the suction port 2 or to operate the indoor fan 9 at a low speed when the short circuit airflow 15 is formed. Or to control.

The control unit 29 is composed of, for example, a microprocessor or the like.
2, a fan rotation time integrating means 33 and an electrode contamination determining means 34 are provided.

The short circuit determining means 31 determines whether or not the motors 13M and 14M for the left and right and up and down wind direction change plates are operating, obtains the directions of the wind direction change plates 13 and 14, and determines whether the short circuit airflow 15 It is determined whether or not it has been formed.

The fan rotation time integrating means 33 determines whether or not the indoor fan motor 9M is being driven to determine whether or not the indoor fan 9 is being driven, and determines the rotation time of the indoor fan 9 using a counter. And multiply. However, the fan rotation time accumulation means 33 includes an accumulation prohibition means 33a for prohibiting the accumulation of the rotation time of the indoor fan 9 when the short circuit airflow 15 is determined to be formed by the short circuit determination means 32. ing.

The electrode contamination determination means 34 determines whether or not the integration time obtained by the fan rotation time integration means 32 has exceeded a predetermined reference time.
It is determined that the degree of contamination of the electrode 6b is advanced.
As shown in FIG. 4A, the emptying check display section 36 of the display section 35 attached to the lower front part of the indoor unit 1 is turned on.

FIG. 4B is an enlarged view of the display unit 35, and the lighting of the air cleaning check display unit 36 is indicated by the air purifier 6
This indicates that the electrode 6b of FIG. After the cleaning, when the air cleaning reset button 37 is pressed, the fan rotation time integrating means 33 is reset (to make the integrated value zero).
Then, the accumulation of the rotation time of the indoor fan 9 is newly started.

Therefore, according to the present embodiment, whether or not the short circuit airflow 15 is formed is determined by the short circuit determination means 32, and when the rotation time of the indoor fan 9 is integrated, the short circuit airflow 1
5 is formed, the fan rotation time integrating means 3
3 is prohibited by the integration prohibiting means 33a. For this reason, the clean air-conditioning air blown out from the outlet 4 flows through the electrode 6b of the air purifier 6a and the indoor filter 6 and returns to the electrode 6b of the air purifier 6a in a short-circuit manner. When the electrode 6b of the air purifier 6a is not stained, the operation time of the indoor fan 9 is not integrated, so that the degree of contamination of the electrode 6b of the air purifier 6a can be accurately obtained. Therefore, it is possible to appropriately display the necessity of cleaning the electrode 6b of the air purifier 6a. Therefore, it is possible to prevent the lighting of the air cleaning check display unit 36 from being performed too early or too late. it can.

FIG. 5 is a block diagram of a main part of a second embodiment of the present invention. In the second embodiment, the fan rotation time integration means 33 determines whether or not to integrate the rotation time of the indoor fan 9 based on whether or not the short circuit airflow 15 is formed. Whether to drive,
Further, it is also determined whether or not the rotation speed of the indoor fan 9 is equal to or lower than a predetermined speed, and it is intended to more appropriately determine the degree of contamination of the electrode 6b of the air cleaner 6a.

That is, even when the short circuit airflow 15 is formed, the room air sucked into the inside from the suction ports 2 and 3 by the indoor fan 9 contains
There is room air blown into the room on the short circuit airflow 15 and room air blown out of the short circuit airflow 15 to circulate in the room.
Generally, in the dehumidifying operation mode, the wind direction changing plate 1 is used to prevent the cool air from being directly radiated toward the indoor person.
4 is set to a dotted line position in FIG. 2, the rotation speed of the indoor fan 9 is suppressed to a low value, a short circuit airflow 15 is formed, and the indoor air is efficiently cooled to liquefy the water vapor in the indoor air. Therefore, in the dehumidifying operation, the ratio of the room air blown out through the short circuit airflow 15 is larger than in the other operation modes of the cooling operation and the heating operation.

When the rotation speed of the indoor fan 9 is equal to or lower than a predetermined rotation speed, particularly when the air conditioner is operated at a settable minimum rotation speed, most of the air blown out from the air outlet 4 is short-circuit airflow. 15 and does not largely circulate in the room, so that the degree of contamination of the electrode 6b of the air purifier 6a is reduced. Therefore, when the rotation speed of the indoor fan 8 is smaller than the predetermined rotation speed, the integration of the rotation time of the indoor fan 9 is prohibited to substantially contaminate the electrode 6b of the air purifier 6a. Only during the operating state, only the rotation time is integrated.

FIG. 1 is a flowchart showing a specific procedure for determining the degree of contamination of the electrode 6b of the air cleaner 6a according to the second embodiment.
Indicates each step of the flowchart.

First, in ST1, the short circuit determination means 32 determines whether or not the air purifier 6a is ON. If it is determined in ST1 that the air purifier 6a is ON, the process proceeds to ST2.

Next, in ST2, the short circuit determining means 32 determines whether or not the short circuit airflow 15 is formed by obtaining the direction of the louvers (wind direction adjusting plates 13, 14).

Thereafter, in ST3, the accumulation inhibiting means 3
3b determines whether or not the dehumidifying operation is performed when the short circuit airflow 15 is formed.

If it is determined in ST3 that the operation is the dehumidification operation, the accumulation of the operation time of the indoor fan 9 by the fan rotation time accumulation means 33 is stopped in ST4.
Prohibited by b. Thereafter, the process returns to ST1 and repeats the following steps.

However, if it is determined in ST3 that the operation is not the dehumidification operation, the process proceeds to ST5, where the accumulation inhibiting means 33 is operated.
b determines whether or not the rotation speed of the indoor fan 9 is equal to or lower than a predetermined rotation speed, for example, the minimum rotation speed, by referring to the speed control circuit 28.

Further, in ST5, when it is determined that the rotation speed of the indoor fan 9 is equal to or lower than the predetermined rotation speed, for example, the minimum rotation speed, the process proceeds to ST4, and the operation time of the indoor fan 9 by the fan rotation time integrating means 33 is determined. Is inhibited by the accumulation inhibiting means 33b.

However, in ST5, when it is determined that the rotation speed of the indoor fan 9 is not higher than the predetermined rotation speed, for example, not at the minimum rotation speed, the process proceeds to ST6, and the operation time of the indoor fan 9 is calculated by the fan rotation time integrating means 33. Integrate.

Therefore, according to the second embodiment, when the dehumidifying operation is performed and when the rotation speed of the indoor fan 9 is lower than the predetermined rotation speed, the electrode 6 of the air purifier 6a is not used.
Since the contamination of b is small, the accumulation of the rotation time of the indoor fan 9 by the fan rotation time accumulation means 33 is prohibited, so that the accuracy of the electrode contamination determination means 34 for the degree of contamination of the electrode 6b of the air purifier 6a is improved. Can be done.

In each of the above embodiments, the degree of contamination of the electrode 6b of the air cleaner 6a is determined based on the effective accumulated time of the rotation time of the indoor fan 9. However, a constant value is used instead of the accumulated time of the rotation time. The degree of contamination of the electrode 6b of the air purifier 6a may be determined based on the integrated rotation speed of the indoor fan 9 detected at each time. In this case, when integrating the number of rotations of the indoor fan 9, the number of rotations during the time when the short circuit airflow 15 is formed may be excluded.

In the description of each of the above embodiments,
Although the case where the indoor heat exchanger is composed of the auxiliary indoor heat exchanger 7 and the main indoor heat exchanger 8 as shown in FIG. 6A has been described, as shown in FIG. The present invention can also be applied to a case where is constituted by a single indoor heat exchanger 38.

[0060]

As described above, according to the present invention,
If the short circuit airflow determining means determines that a short circuit airflow of the air conditioning air is formed, the air passing through the electrode of the air purifier is less contaminated, and the rotation of the indoor fan by the fan rotation time integrating means is reduced. The integration of time is prohibited by the integration prohibition means.

On the other hand, when it is determined that the short circuit airflow is not formed, the air blown out from the air outlet circulates in the room where the air is conditioned, so that the electrode of the air purifier easily generates dirt. For this reason, the fan rotation time integrating means integrates based on the rotation time of the indoor fan, and based on the integrated time, the degree of contamination of the electrode of the air purifier is determined by the electrode contamination determining means. Therefore, it is possible to improve the determination accuracy of electrode contamination of the air purifier.

[Brief description of the drawings]

FIG. 1 is a flowchart of a control unit according to a second embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the indoor unit according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a refrigeration cycle and a configuration of a control circuit according to the first embodiment of the present invention.

FIG. 4A is a diagram illustrating an appearance of an indoor unit according to the first embodiment of the present invention, and FIG. 4B is an enlarged view of a part b in FIG.

FIG. 5 is a main part block diagram of a second embodiment of the present invention.

6A is a schematic diagram showing a side cross section of an indoor unit having an auxiliary indoor heat exchanger, and FIG. 6B is a schematic diagram showing a side cross section of an indoor unit having no auxiliary heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Suction port 3 Suction port 4 Outlet 6 Indoor filter 6a Air purifier 6b Electrode of air purifier 9 Indoor fan 13 Left and right wind direction change board 14, 14 Vertical wind direction change board 15 Short circuit air flow 29 Control unit 32 Short circuit Judging means 33 Fan rotation time integrating means 33a, 33b Integration inhibiting means 34 Electrode contamination determining means 36 Emptying check display section

Claims (4)

[Claims] 1. An air purifier for purifying air sucked from an inlet, an indoor fan for purifying air-conditioned air purified by the air purifier and heat-exchanged by an indoor heat exchanger from an outlet, An air conditioner having fan rotation time integration means for integrating the rotation time of the indoor fan and electrode contamination determination means for determining contamination of the electrode of the air purifier based on the time integrated by the integration means. A short-circuit determining means for determining whether or not a short-circuit airflow in which the air-conditioning air blown out from the outlet is short-circuited and flows into the suction port; and a short-circuit airflow is formed by the determining means. Accumulation prohibition means for prohibiting the accumulation of the rotation time of the indoor fan by the fan rotation time integration means when it is determined that An air conditioner characterized by comprising: 2. The air conditioner according to claim 1, wherein the accumulation inhibiting means inhibits the accumulation of the rotation time of the indoor fan by the fan rotation time accumulation means even during the dehumidifying operation. 3. The method according to claim 1, wherein the accumulation inhibiting means inhibits accumulation of the rotation time of the indoor fan by the fan rotation time accumulation means when the indoor fan rotation speed is equal to or less than a predetermined value. The air conditioner as described. 4. The short circuit determining means is configured to determine whether or not a short circuit airflow is formed based on an angle of a wind direction change plate that adjusts a wind direction of a wind blown from an outlet. The air conditioner according to any one of claims 1 to 3.