JP2003021495A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner that is constituted to periodically and automatically wash the heat exchanger of the air conditioner so as to maintain the heat exchanger efficiency of the heat exchanger at a high level. SOLUTION: The air conditioner is provided with the heat exchanger which makes heat exchanges between a refrigerant passing through the exchanger and an air flow passing over the external surface of the exchanger, a storage tank which stores a cleaning solvent, and a cleaning pipeline which guides the cleaning solvent from the storage tank to the upper part of the heat exchanger. The air conditioner is also provided with a sprinkler nozzle which is installed to the front end of the cleaning pipeline and sprays the cleaning solvent upon the upper surface of the heat exchanger, a feeding pump which feeds the cleaning solvent from the storage tank to the sprinkler nozzle through the cleaning pipeline, and a cleaning control section which makes the sprinkler nozzle spray the cleaning solvent by driving the feeding pump by discriminating the cleaning timing of the heat exchanger.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air conditioner,
In particular, it relates to a function of preventing a decrease in heat exchange efficiency of a heat exchanger provided in an air conditioner.

[0002]

2. Description of the Related Art In a general separate type air conditioner, an outdoor heat exchanger arranged in an outdoor unit and an indoor heat exchanger arranged in an indoor unit are connected by a refrigerant pipe, and each heat exchanger is connected. Is controlled to act as a condenser and an evaporator of the refrigerant, thereby performing a cooling operation or a heating operation.

An outdoor fan for generating an air flow is arranged in the outdoor unit, and the outdoor fan introduces the outside air to exchange heat between the refrigerant passing through the inside of the outdoor heat exchanger and the air. I do. Similarly, an indoor fan that generates an airflow is arranged inside the indoor unit casing in the indoor unit as well, and the indoor fan draws in the indoor air to generate a space between the refrigerant and the air that passes through the inside of the indoor heat exchanger. Heat exchange with.

The heat exchanger comprises a plurality of heat transfer tubes each of which is folded back at both ends in the lengthwise direction and which is composed of a hollow pipe through which a refrigerant passes, and a plurality of plate-shaped members which are attached to the heat transfer tubes in parallel with the air flow. And heat radiation fins. A large number of heat radiation fins are provided side by side in order to enhance the heat radiation effect, and the larger the number of heat radiation fins, the narrower the gap between them.

[0005]

Usually, a filter is arranged upstream of the heat exchanger, and it is considered that much dust and dust will not reach the heat exchanger by this filter. However, dust, tobacco tar, vaporized chemicals, and other fine particles that have not passed through the filter may reach the heat exchanger and adhere to the surfaces of the heat radiation fins.

If the air conditioner is operated for a long period of time without cleaning the heat exchanger, the above-mentioned foreign matter adheres to the heat radiation fins of the heat exchanger, and the heat radiation fins are covered with a dirt film. There is a possibility that it will be in a closed state or the gap between the adjacent heat radiation fins will be clogged. In this case, the heat exchange efficiency in the heat exchanger is reduced, and the air conditioning capacity of the air conditioner is significantly reduced. In particular, if the indoor heat exchanger provided in the indoor unit is dirty, the indoor temperature cannot be maintained at an appropriate temperature, and molds and bacteria propagate to contaminate the indoor air. The issue of hygiene comes to the surface.

In order to deal with such a problem, it is conceivable to regularly clean the heat exchanger, but the heat exchanger is a fragile member, and if an amateur cleans it, it may cause clogging. , There is a risk of breaking the heat exchanger. Therefore, cleaning of the heat exchanger is usually performed by a cleaning professional such as an air conditioner maker or a cleaning service company. In this case, there is a problem that the cost for the cleaning work becomes high and the burden on the user becomes heavy. Further, if the stain is severe, there is a possibility that the stain cannot be completely removed even by a professional cleaning process and the stain remains.

The present invention proposes a structure of an air conditioner in which the heat exchanger is automatically cleaned periodically in order to maintain high heat exchange efficiency of the heat exchanger of the air conditioner.

[0009]

SUMMARY OF THE INVENTION An air conditioner according to claim 1 of the present invention comprises a heat exchanger for exchanging heat between a refrigerant passing through the inside and an air flow passing through the outer surface, and a cleaning liquid. A storage tank for storing, a cleaning pipe for guiding the cleaning liquid from the storage tank to the upper part of the heat exchanger, a spray nozzle provided at the tip of the cleaning pipe for spraying the cleaning liquid on the upper surface of the heat exchanger, and a cleaning from the storage tank. A delivery pump for delivering the cleaning liquid to the water spray nozzle via a pipe, and a cleaning processing control unit for determining the cleaning time and driving the delivery pump to spray the cleaning liquid from the water spray nozzle.

In this case, at the cleaning time determined by the cleaning control unit, the cleaning liquid from the storage tank is automatically sprayed on the upper part of the heat exchanger, and the heat exchanger can be cleaned. Therefore, since the heat exchanger can be automatically cleaned without the user's operation, the heat exchanger is not damaged, and the cleaning can be regularly performed to prevent dirt from sticking.

An air conditioner according to a second aspect of the present invention is the air conditioner according to the first aspect, wherein the drain pan receives condensed water adhering to the outer surface of the heat exchanger and the condensation accumulated in the drain pan. Further provided with a drain pipe for discharging water,
The cleaning liquid sprayed from the water spray nozzle and flowing down the surface of the heat exchanger is drained through the drain pan and the drain pipe. In this case, the drain pan and the drain pipe included in the air conditioner are used to discharge the cleaned cleaning liquid, and it is not necessary to newly provide a drainage means.

An air conditioner according to a third aspect of the present invention is the air conditioner according to the first or second aspect, in which a storage tank is supplied with a detergent storage part for storing concentrated detergent. A water storage tank that stores water, and a delivery unit that mixes and delivers the detergent in the detergent storage unit and the water in the water storage tank. In this case, the cleaning process can be automatically performed only by supplying water to the storage tank during a certain period until the concentrated detergent is exhausted, which facilitates the maintenance process.

An air conditioner according to a fourth aspect of the present invention is the air conditioner according to the third aspect, further comprising a water supply pipe for supplying water from the tap water to the storage tank. In this case, by supplying tap water through the water supply pipe, the cleaning liquid can be replenished and the maintenance work becomes easy. An air conditioner according to claim 5 of the present invention is the air conditioner according to claim 3, wherein the moisture contained in the outdoor air is adsorbed by the hygroscopic material, and the moisture is separated from the hygroscopic material to remove the humidified air. It further comprises a humidifying unit for generating and supplying it to the room, and further comprises a water supply pipe for supplying the water separated from the hygroscopic material of the humidifying unit to the storage tank.

In this case, since the cleaning liquid can be replenished by using the water obtained from the humidifying unit, the maintenance can be facilitated and the cost can be reduced. An air conditioner according to claim 6 of the present invention is the air conditioner according to any one of claims 1 to 5, wherein the cleaning processing control unit has a predetermined time after installation or previous cleaning. Is determined to be the cleaning time.

In this case, the timer function of the air conditioner can be used to detect the cumulative value of the actual operating time from the time of installation or the previous cleaning, and the cleaning time can be determined based on this. Therefore, it is possible to keep the heat exchanger in a clean state at all times and prevent the heat exchange efficiency from decreasing. An air conditioner according to claim 7 of the present invention is the air conditioner according to any one of claims 1 to 5, further comprising liquid amount detection means for detecting the amount of liquid in the storage tank, and a cleaning process. The control unit is configured to determine when the liquid amount detected by the liquid amount detecting means reaches a predetermined value as the cleaning time.

In this case, the cleaning interval can be adjusted by adjusting the amount of liquid supplied to the storage tank.
Setting of automatic cleaning process becomes easy. An air conditioner according to claim 8 of the present invention is the air conditioner according to any one of claims 1 to 7, wherein the cleaning processing control unit performs heat exchange after performing cleaning liquid spraying processing for a predetermined time. It is configured to function as a condenser and perform a dry mode process that dries the heat exchanger surface.

In this case, since the surface of the heat exchanger is dried after the cleaning treatment, new dirt can be prevented from adhering and the air conditioning operation mode can be quickly changed.

[0018]

DETAILED DESCRIPTION OF THE INVENTION [Appearance of Air Conditioner] 1 of the Present Invention
The appearance of an air conditioner to which the embodiment is applied is shown in FIG.
The air conditioner 1 includes an indoor unit 2 attached to a wall surface in the room and an outdoor unit 3 installed outdoors.
The outdoor unit 3 includes an outdoor air conditioning unit 5 that houses an outdoor heat exchanger, an outdoor fan, and the like.

An indoor heat exchanger is housed in the indoor unit 2,
An outdoor heat exchanger is housed in the outdoor unit 3, and each heat exchanger is connected by a refrigerant pipe 6 to form a refrigerant circuit. [Schematic Configuration of Refrigerant Circuit] An example of a refrigerant circuit used in the air conditioner 1 is shown in FIG.

An indoor heat exchanger 11 is provided in the indoor unit 2. The indoor heat exchanger 11 is composed of a heat transfer tube that is folded back a plurality of times at both ends in the length direction, and a plurality of fins through which the heat transfer tube is inserted, and performs heat exchange with contacting air. In addition, a cross flow fan 12 is provided in the indoor unit 2 for sucking indoor air and exchanging heat with the indoor heat exchanger 11 into the room. The cross-flow fan 12 is formed in a cylindrical shape and has blades provided on the peripheral surface in the direction of the rotation axis, and generates an air flow in the direction intersecting with the rotation axis. The cross flow fan 12 is rotationally driven by a fan motor 13 provided inside the indoor unit 2.

The outdoor air conditioning unit 5 includes a compressor 21 and
A four-way switching valve 22 connected to the discharge side of the compressor 21, an accumulator 23 connected to the suction side of the compressor 21,
An outdoor heat exchanger 24 connected to the four-way switching valve 22 and a pressure reducer 25 including an electric expansion valve connected to the outdoor heat exchanger 24.
And are provided. The decompressor 25 is connected to a field pipe 31 via a filter 26 and a liquid shutoff valve 27, and is connected to one end of the indoor heat exchanger 11 via the field pipe 31. Further, the four-way switching valve 22 is the gas closing valve 2
8 is connected to the on-site pipe 32 via 8 and is connected to the other end of the indoor heat exchanger 11 via this on-site pipe 32. The field pipes 31 and 32 correspond to the refrigerant pipe 6 in FIG.

In the outdoor air conditioning unit 5, a propeller fan 29 for discharging the air after heat exchange in the outdoor heat exchanger 24 is provided. This propeller fan 2
9 is rotationally driven by the fan motor 30. [Indoor Air Conditioning Unit] An exploded perspective view of the indoor unit 2 is shown in FIG.

In FIG. 3, the indoor unit 2 has a front grill assembly 101 and a front panel 102 mounted on the front surface of the front grill assembly 101. The front grill assembly 101 is provided with an upper suction opening 103 that forms a large number of slit-shaped openings on its upper surface. Further, the front panel 102 has front suction ports 104 that open upward and sideways.

Upper suction port 10 of front grill assembly 101
An air filter 105 for air cleaning is inserted in the inside of 3 and the inside of the front inlet 104 of the front panel 102. The front grill assembly 101 is attached to the bottom frame assembly 106 located on the rear side to form a casing that internally houses internal components. The casing composed of the front grill assembly 102 and the bottom frame assembly 106 is a mounting plate 107 fixed to the wall surface in the room.
It is locked to and installed in the room.

The bottom frame assembly 106 is provided with a fan storage section 109 for storing the cross flow fan 12. The cross-flow fan 12 is rotatably attached to the fan housing portion 109 via a bearing member 110, and an indoor fan motor 13 is provided on a side surface facing the bearing member 110. A side plate 111 is attached further outside the indoor fan motor 13.

The indoor heat exchanger 11 is attached so as to surround the front side, the upper side and the upper rear side of the cross flow fan 12. The indoor heat exchanger 11 has a large number of heat radiating fins attached to a plurality of heat transfer tubes that are bent back at the left and right ends, and is sucked from the upper suction port 103 and the front suction port 104 by driving the cross flow fan 12. The generated air is passed to the cross flow fan 12 side to exchange heat with the refrigerant passing through the inside of the heat transfer tube. The indoor heat exchanger 11 is connected to a refrigerant pipe from the outdoor unit 3 via a refrigerant pipe 108 extending from the outdoor heat exchanger 11.

Below the indoor heat exchanger 11, there is provided a drain pan 112 for receiving condensed water generated during heat exchange. A drain hose 113 for discharging the received condensed water to the outside is attached to the drain pan 112. During the cooling operation, the indoor heat exchanger 11
Acts as an evaporator, the water contained in the air contacting the indoor heat exchanger 11 is condensed and dropped. Such a condensed water is received by the drain pan 112 and drained by the drain hose 113.

An electric component box 114 for accommodating a printed circuit board on which a control circuit and the like are mounted and an electric component lid 115 for covering the front surface of the electric component box 114 are provided below the front surface of the front grill assembly 101. Further, below the electric component box 114, an outlet for the air flow generated by the cross flow fan 12 is provided. Horizontal blades 116, 116 and a plurality of vertical blades 117, 117 connected by a vertical blade connecting rod 118 are swingably provided at the outlet. The horizontal blades 116, 116 are rotationally driven by the horizontal blade operating motor 119, and
7, 117 are configured to be rotationally driven by the vertical blade actuation motor 120.

A storage tank 151 for storing the cleaning liquid is installed beside the indoor heat exchanger 11. The storage tank 151 includes a detergent storage section 152 for storing concentrated detergent and a water storage tank 153 for storing supplied water.
And a delivery pump 154 for mixing and delivering the detergent in the detergent storage section 152 and the water in the water storage tank 153. A water supply pipe 155 for supplying tap water or other water is connected to the water storage tank 153. Further, the delivery pump 154 has a cleaning pipe 156 for guiding the cleaning liquid from the storage tank 151 to the upper part of the indoor heat exchanger 11.
Is attached. The cleaning pipe 156 includes a water sprinkling pipe 158 attached to the upper portion of the indoor heat exchanger 11, and a guide pipe 1 connecting the water sprinkling pipe 158 and the delivery pump 154.
57 and 57. The water spray pipe 158 is provided with a plurality of water spray nozzles 159 for spraying the cleaning liquid toward the surface of the indoor heat exchanger 11.

For example, as shown in FIG. 4, when the indoor heat exchanger 11 is composed of a front surface portion 131 and a rear surface portion 132 which are bent at a plurality of places, the front portion corresponds to the lower position of the front surface portion 131. A drain pan 133 and a rear drain pan 134 are provided so as to correspond to a position below the back surface 132. In such a case, a sprinkling pipe 158 for spraying the cleaning liquid is provided on the upper surface of the front surface 131, and a sprinkling pipe 160 for spraying the cleaning liquid is provided on the upper surface of the rear surface 132. The water spray pipe 158 is provided with a water spray nozzle 159 for spraying the cleaning liquid on the front surface 131, and the water spray pipe 160 is provided with a water spray nozzle 161 for spraying the cleaning liquid on the rear surface 132.

The cleaning liquid sprayed from the water spray nozzles 159 of the water spray pipe 158 flows down from the upper part of the front surface 131 of the indoor heat exchanger 11 while cleaning the surface, and falls to the drain pan 133 located below. Further, the cleaning liquid sprayed from the water spray nozzle 161 of the water spray pipe 160 flows down from the upper part of the back surface portion 132 of the indoor heat exchanger 11 while cleaning the surface, and falls to the drain pan 134 located below. The cleaning liquid that has reached the drain pans 133 and 134 and has been cleaned is discharged to the outside through a drain pipe (not shown).

[Water Supply Mechanism] A water supply mechanism for supplying tap water to the storage tank 151 will be described with reference to FIG. A water supply unit to which the water supply pipe 155 to which tap water is supplied is connected is provided with a strainer 171 for removing impurities from the supplied water and an opening / closing valve 172. If necessary, it is possible to arrange a flow rate controller including an electric valve, an orifice, a capillary, a pressure reducing valve, etc. between the strainer 171 and the opening / closing valve 172 to adjust the water pressure. is there.

As the opening / closing valve 172, it is possible to use an electromagnetic valve, a combination of a check valve and an electromagnetic valve, an open / close controllable unit such as an atmosphere opening valve with an electromagnetic valve. Storage tank 1
In the water storage tank 153 of 51, a liquid amount detection means 173 for detecting the liquid amount is provided. As the liquid amount detecting means 173, it is possible to use a liquid surface detecting device using a photoelectric sensor or the like, or an electromagnetic float switch for detecting that the liquid surface has reached a predetermined position.

The water faucet connected to the water supply pipe 155 is always opened, and the opening / closing valve 172 is controlled to open / close based on the detection signal of the liquid amount detecting means 173 to adjust the amount of water in the water storage tank 153. Can be configured as Also,
When the amount of liquid in the water storage tank 153 detected by the liquid amount detecting means 173 reaches a certain amount, the delivery pump 154 is operated to mix the detergent in the detergent storage unit 152 with the water in the water storage tank 153. Then, it can be configured to be delivered as a cleaning liquid.

[Humidifying Unit] The air conditioner may be provided with a humidifying unit for humidifying the indoor air, and by using such a humidifying unit, the storage tank 1
Consider the case where water is supplied into 51. The humidification unit
For example, the humidifying air is provided to the upper portion of the outdoor air conditioning unit 5 shown in FIG. 1 and is configured to send the humidified air to the indoor air conditioning unit 2 by a humidified air pipe different from the refrigerant pipe 6.

A schematic structure of the humidifying unit is shown in FIG. Inside the humidifying unit 180, a moisture absorbing air passage 181 and a humidifying air passage 182 are formed.
3 and the humidification fan 184 generate an air flow by the outside air introduced. A moisture absorption rotor 185 is arranged so as to straddle the moisture absorption air path 181 and the humidification air path 182. The moisture absorption rotor 185 is formed in a disk shape by a porous material such as zeolite, and is rotationally driven by a motor (not shown).

A heater 186 for heating the moisture absorption rotor 185 to release the moisture adsorbed on the moisture absorption rotor 185 is disposed near the surface of the moisture absorption rotor 185 in the humidifying air passage 182. The moisture in the outside air introduced by the moisture absorption fan 183 is adsorbed by the moisture absorption rotor 185. Since the moisture absorption rotor 185 is rotationally driven, the moisture absorption rotor 18
The portion of 5 that has adsorbed the water moves into the humidifying air path 182. At this time, the vicinity of the surface of the moisture absorption rotor 185 is heated by the heater 186,
The adsorbed water is released and released as water vapor into the air flow generated by the humidification fan 184. By sending this humidified air to the indoor air conditioning unit via the humidified air pipe 187, the indoor air can be humidified.

Humidifying air pipe 187 of the humidifying unit 180
In the middle of the process, cooling means 188 such as a heat exchanger or heat dissipation means
A drip tank 189 for storing condensed water generated in the humidified air pipe 187, and a condensed water delivery pump 190 for delivering water in the drip tank 189 are provided. By connecting the condensed water delivery pump 190 to the water supply pipe 155, the condensed water in the drip tank 189 can be supplied to the storage tank 151.

In this case, the water supply section of the storage tank 151 can be provided with a strainer for removing impurities in the water supplied. Further, a liquid amount detecting means such as a float switch is provided in the water storage tank 153, and the cleaning process is executed when the liquid amount in the water storage tank 153 reaches a predetermined amount. This can prevent the water supplied from the dripping tank 189 from overflowing.

[Cleaning Process Control] FIG. 7 shows an embodiment of the cleaning process control. This air conditioner includes a control unit including a microprocessor for controlling each unit, ROM, RAM, various interfaces, and the like.
This control unit also controls the cleaning process.

In step S11, it is determined whether or not the cleaning time has come. For example, it is possible to measure the actual air-conditioning operation time and determine that the cleaning time has been reached when a predetermined time has elapsed from the time of installation or the previous cleaning.
It is also possible to determine that the cleaning time is reached when the amount detected by the liquid amount detecting means 173 in the water storage tank 153 reaches a certain amount. When it is determined in step S11 that the cleaning time has come, the process proceeds to step S12.

In step S12, it is determined whether or not the amount of liquid in the water storage tank 153 is sufficient. Water tank 15
If it is determined that the amount of liquid in 3 has not reached the amount required for the cleaning process, the process proceeds to step S18, and if it is determined that the amount is sufficient, the process proceeds to step S13. In step S13, the operation of the delivery pump 154 is started. The delivery pump 154 mixes the detergent in the detergent storage portion 152 and the water in the water storage tank 153 to wash the cleaning pipe 11.
It is sent to the 56 side. In step S14, the delivery pump 1
It is determined whether or not a predetermined time has passed since the operation of 54 was started. If it is determined that the predetermined time has elapsed, the process proceeds to step S15. In step S15, the delivery pump 154 is stopped.

In step S16, a drying process for drying the surface of the indoor heat exchanger 11 is executed. Here, in FIG.
In the refrigerant circuit shown in (3), the operation is started in a so-called heating mode by switching the four-way switching valve 22 so that the indoor heat exchanger 11 acts as a condenser and the outdoor heat exchanger 24 acts as an evaporator. As a result, the moisture adhering to the surface of the indoor heat exchanger 11 is evaporated and dried. In step S17, it is determined whether or not a predetermined time has elapsed since the drying process was started. When it is determined that the predetermined time has elapsed from the start of the drying process, the process proceeds to step S18.

In step S18, the water supply process to the water storage tank 153 is executed. For example, the on-off valve 1 shown in FIG.
By opening 72, it is possible to perform the water supply process to the water storage tank 153. Further, by operating the condensed water delivery pump 190 shown in FIG.
It becomes possible to supply the condensed water of the drip tank 189 to the water storage tank 153.

In step S19, it is determined whether or not the amount of liquid in the water storage tank 153 has reached a predetermined amount. Here, the liquid amount detecting means 17 arranged in the water storage tank 153.
If it is determined that the predetermined amount is reached based on the detection signal from 3, the process proceeds to step S20. Step S2
At 0, the water supply process is stopped. With this configuration, the cleaning time can be determined and the indoor heat exchanger 11 can be automatically cleaned, and foreign matter can be attached to the heat radiation fins of the indoor heat exchanger 11. Prevent,
It is possible to maintain a high air conditioning capacity of the air conditioner.

Further, by performing the drying process for a predetermined time after the cleaning process, it is possible to prevent new dirt from adhering through the moisture adhering during the cleaning process, and to start the air conditioning operation promptly. It is possible to do. In this drying process, only the cross flow fan 12 may be driven, and the drying process may be omitted.

[Other Embodiments] The outdoor heat exchanger 24 can also be provided with a similar cleaning unit, and in this case, it is possible to further prevent deterioration in capacity during air conditioning operation. Further, it is also possible to configure the detergent storage portion 152 and the water storage tank 153 of the storage tank 151 as one cleaning liquid storage portion and store the diluted cleaning liquid in this cleaning liquid storage portion. In this case, a message indicating that the cleaning liquid in the storage tank 151 is exhausted may be displayed, and the cleaning liquid diluted by the user or maintenance personnel may be replenished. In this case, the water supply mechanism can be omitted, and the device can be simplified.

[0048]

In the air conditioner according to the first aspect of the present invention, at the cleaning time determined by the cleaning processing control unit, the cleaning liquid from the storage tank is automatically sprayed on the upper part of the heat exchanger to exchange heat. The vessel can be cleaned. Therefore,
Since the heat exchanger can be automatically cleaned without the user's operation, the heat exchanger is not damaged, and the cleaning can be regularly performed to prevent clogging of dirt.

In the air conditioner according to claim 2 of the present invention,
The drain pan and the drain pipe included in the air conditioner are used to discharge the cleaned cleaning liquid, so that it is not necessary to newly provide a drainage means. In the air conditioner according to claim 3 of the present invention, the cleaning process can be automatically performed only by supplying water to the storage tank during a certain period until the concentrated detergent is exhausted, and the maintenance process is easy. become.

In the air conditioner according to claim 4 of the present invention,
By supplying tap water through the water supply pipe, the cleaning liquid can be replenished and the maintenance work becomes easy.
In the air conditioner according to the fifth aspect of the present invention, since the cleaning liquid can be replenished by using the water obtained from the humidifying unit, the maintenance is easy and the cost can be reduced.

In the air conditioner according to claim 6 of the present invention,
By utilizing the timer function of the air conditioner, it is possible to detect the cumulative value of the actual operating time from the time of installation or the previous cleaning, and determine the cleaning time based on this. Therefore, it is possible to keep the heat exchanger in a clean state at all times and prevent the heat exchange efficiency from decreasing. In the air conditioner according to claim 7 of the present invention, the cleaning interval can be adjusted by adjusting the amount of liquid supplied to the storage tank, and the automatic cleaning process can be set easily.

In the air conditioner according to claim 8 of the present invention,
In order to dry the heat exchanger surface after cleaning,
Adhesion of new dirt can be prevented, and it becomes possible to quickly shift to the air conditioning operation mode.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of an air conditioner.

FIG. 2 is an explanatory diagram showing an example of a refrigerant circuit.

FIG. 3 is an exploded perspective view of an indoor air conditioning unit.

FIG. 4 is a sectional view of an indoor air conditioning unit.

FIG. 5 is a simplified block diagram showing an example of a water supply mechanism.

FIG. 6 is a simplified block diagram showing another example of the water supply mechanism.

FIG. 7 is a flowchart showing an example of cleaning processing control.

[Explanation of symbols] 151 Storage tank 152 detergent storage 153 water storage tank 154 delivery pump 155 Water supply piping 156 Cleaning pipe 158 Sprinkling pipe 159 Sprinkling nozzle

Claims (8)

[Claims] 1. A heat exchanger for exchanging heat between a refrigerant passing through the inside and an air flow passing through the outer surface, a storage tank for storing a cleaning liquid, and a storage tank above the heat exchanger. A cleaning pipe for guiding the cleaning liquid, a spray nozzle provided at the tip of the cleaning pipe for spraying the cleaning liquid on the upper surface of the heat exchanger, and a cleaning liquid delivered from the storage tank to the spray nozzle via the cleaning pipe. An air conditioner comprising: a delivery pump; and a cleaning process control unit that determines a cleaning time and drives the delivery pump to perform a cleaning liquid spraying process from the spray nozzle. 2. A drain pan for receiving condensed water adhering to the outer surface of the heat exchanger, and a drain pipe for discharging condensed water accumulated in the drain pan, further comprising: The air conditioner according to claim 1, wherein the washing liquid that has flowed down is drained through the drain pan and the drain pipe. 3. The storage tank comprises a detergent storage section for storing concentrated detergent, a water storage tank for storing water to be supplied, a detergent in the detergent storage section, and a water in the water storage tank. 3. A sending unit for sending out.
Air conditioner described in. 4. The air conditioner according to claim 3, further comprising a water supply pipe for supplying water from the tap water to the storage tank. 5. A humidifying unit for adsorbing moisture contained in outdoor air with a moisture absorbing material, separating moisture from the moisture absorbing material to generate humidified air, and supplying the humidified air to the room, and separating from the moisture absorbing material of the humidifying unit. The air conditioner according to claim 3, further comprising a water supply pipe for supplying the stored water to the storage tank. 6. The air conditioner according to claim 1, wherein the cleaning processing control unit determines that a cleaning time is a time when a predetermined time has elapsed since the time of installation or the previous cleaning. 7. The cleaning timing is further provided with a liquid amount detecting means for detecting the amount of liquid in the storage tank, and the cleaning processing control part is for cleaning time when the liquid amount detected by the liquid amount detecting means reaches a predetermined value. The air conditioner according to any one of claims 1 to 5, which is determined. 8. A cleaning process control unit performs a cleaning liquid spraying process for a predetermined time, and then executes a dry mode process in which the heat exchanger functions as a condenser to dry the heat exchanger surface.
The air conditioner according to claim 1.