JPH07103690A - Air conditioner cleaning device - Google Patents

Abstract

(57) [Abstract] [Object] An object of the present invention is to smoothly wash a heat exchanger in an air conditioner such as a ceiling-embedded type air conditioner without requiring human power by a swiveling action of an electrically driven nozzle unit. . A rotating unit 28 is formed by a rotating cylinder 35 formed in a double cylinder shape and an electric motor 37 that drives the rotating cylinder 35, and the rotating unit 28 is a rotation that surrounds the fan motor 22. The nozzle 3 is rotatably accommodated in the unit mounting tube 29, and the nozzle 3 is provided below the rotating unit mounting tube 29.
Nozzle unit 3 in which 0 is mounted facing the heat exchanger 23
1 is fixed to the rotary unit 28 so as to be rotatable together, and the nozzle unit 31 is connected to the liquid storage tanks 49 and 50 via the pump 47, so that the cleaning device 27 for the heat exchanger 23 of the air conditioner 21 can be installed. It is characterized in that it is configured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention cleans a heat exchanger installed inside an air conditioner installed at a high place such as a ceiling surface quickly, reliably and efficiently without relying on human labor. For a device for doing.

[0002]

2. Description of the Related Art Generally, an air conditioner is widely used for heating, cooling or ventilation. Nowadays, due to the location of installation, air conditioners installed at high places such as ceiling-embedded type or ceiling-suspended type are rapidly being used in hospitals, restaurants, general shops, etc. It is popular. However, since the air conditioner is installed at a high place such as the ceiling surface in the room, when cleaning, for example, remove dust and cotton dust adhering to the air filter inside the air inflow hole and the heat exchanger. In such a case, remove the air filter using a step or stepladder and wash it with water.For the heat exchanger, wipe it with a rag, or use a vacuum cleaner to remove cotton dust etc. Was. However, during the cleaning work, dust and the like are often dropped or scattered on the floor surface, product case, desk, etc. during the cleaning, and therefore, a sheet is laid on the floor surface prior to cleaning, the product case, desk, etc. Since it required preparation work such as covering with cloth, it was very troublesome and troublesome.
Also, since all cleaning work depends on human power, human labor is required and the heat exchanger can be wiped with a rag,
Even if the electric vacuum cleaner sucked dust, it was not possible to remove cotton dust, oil and fat, cigarette tar, etc. adhering to the heat exchanger itself.

[0003]

Therefore, recently, for example, as shown in FIG. 5, parts such as an air intake grill (not shown) of a ceiling-embedded air conditioner 1 and a fan runner attached to a fan motor are installed. After removal, the lower side of the air conditioner 1 is covered with a vinyl cover 2, a drain hose 3 is attached to the lower end of the cover 2, and the drain hose 3 is hung down to the drain tank 4.
Then, the detergent liquid in the detergent liquid tank 5 is fed to the injector 8 via the hose 7 by the pump 6, and the nozzle 9 of the injector 8 is inserted into the cover 2 from the hole 10 opened in the vinyl cover 2, After confirming the position of a heat exchanger (not shown) in the air conditioner 1, cleaning is performed by injecting a detergent liquid whose injection pressure is adjusted. The drainage from which the heat exchanger has been washed flows down into the vinyl cover 2 in sequence, passes through the drainage hose 3 and is stored in the drainage tank 4.
After cleaning with the detergent solution, cleaning water (clean water) was sprayed from the nozzle 9 to wash the heat exchanger with water.

In the above-mentioned cleaning, the dust and the like adhering to the heat exchanger can be satisfactorily removed by spraying the detergent liquid, but at the time of the cleaning work, an operator holds the injector in his hand and steps on it. Climbing up to the nozzle and spraying the detergent solution one by one with the nozzle directed toward the heat exchanger, the work is carried out in an unstable state on the stepladder, which is extremely inferior in workability. Since the cleaning work was carried out manually while moving the stepladder corresponding to the position of the heat exchanger, the work required a great deal of labor and time, and it was very dangerous because it was a stepladder work. Further, although the detergent liquid and the cleaning water are sprayed toward the heat exchanger, since a fan electric motor (not shown) is mounted nearby,
In many cases, splashing water or the like at the time of injection is scattered to the electric motor, and as a result, it has been necessary to specially provide a waterproof means around the fan electric motor to eliminate the harmful effects of the splashing water or the like.

Further, as described above, instead of the operator holding the injector by hand to wash the heat exchanger, for example, as shown in FIG. 6, a conical shape covering the lower opening of the air conditioner 1 is used. Hood 1
1, nozzles 12 and 13 for individually feeding and ejecting the detergent liquid and the washing water provided in the hood 11, and for discharging the drainage of the detergent liquid and the washing water attached to the lower portion of the hood 11. Exhaust pipe 14 and vehicle 15 such as an outdoor truck
A detergent liquid tank 16 communicating with the nozzle 12 mounted on the nozzle via a hose 12a, and the nozzle 13 also has a hose 13a.
Water tank 17 communicating via a compressor and a compressor 18
And a drainage tank 19 communicating with the discharge pipe 14 to form a cleaning device, and when cleaning the heat exchanger 20, the cleaning liquid is sprayed from the nozzles 12 and 13 respectively. Was going on. By installing this cleaning device in the vicinity of an air conditioner that requires cleaning, it is convenient because it is possible to easily eject the cleaning water and the like and perform the cleaning operation without relying on human power.

However, in the case of washing, washing water or the like is sprayed toward the heat exchanger. Therefore, similar to the above, the fan motor is provided with a separate waterproofing means, or the fan motor is removed to wash water. However, since the nozzle itself is fixed, the cleaning point is limited and efficient cleaning cannot be performed. Since various tanks, compressors, etc. are mounted on vehicles such as outdoor trucks, a parking space is required for the work, and various tanks and nozzles are connected by hoses. When there is an air conditioner for washing in a high-rise building, there is a risk that washing water or the like may cause an extreme decrease in the head of the building or may leak water from the connection part of the hose, making it unusable. Further, the drive source such as the compressor is
Since the generator is driven by the engine of a vehicle such as a truck, noise is generated, and there is a problem in performing cleaning work at midnight.

In view of the above-mentioned various problems, the present invention provides a heat exchanger with cleaning water without adversely affecting a fan electric motor incorporated in a ceiling-embedded or ceiling-suspended air conditioner. Efficiently injecting liquid such as liquid with a nozzle unit that swirls along the inner peripheral surface of the heat exchanger, the washing work of the heat exchanger can be performed quickly without relying on human power.
It is an object of the present invention to provide an air conditioner cleaning device having a simple structure that can be easily and safely performed.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a rotary cylinder having a hole for loosely fitting a rotor shaft of a fan motor of an air conditioner, and the rotary cylinder. And a rotation unit configured to include an electric motor that rotates the rotor shaft as a center, and the rotation unit is built-in,
A rotary unit mounting cylinder that holds the rotary unit under the fan motor under the condition that the outer peripheral surface of the fan motor is surrounded, and a rotary unit is rotatably connected to the lower side of the rotary unit mounting cylinder. A nozzle unit vertically extending outside the rotary unit mounting cylinder so as to face the heat exchanger, a plurality of nozzles for ejecting liquid arranged in a row in the nozzle unit, and a base of the nozzle unit are rotated. A nozzle unit support cylinder that supports freely, a liquid feed hose that connects the nozzle unit support cylinder to each tank of detergent liquid and cleaning water, and liquid supply by suctioning / pressurizing the liquid such as the detergent liquid. A liquid feed pump that feeds a feed hose, a funnel-shaped hood cover in the shape of an inverted pyramid that encloses the lower opening surface of the air conditioner, and the lower end of this hood cover. A drainage hose that connects to the liquid tank so that they can communicate with each other, a trolley that individually mounts the drainage tank and a tank that stores each liquid for detergent and cleaning, a pump for feeding the cleaning liquid and cleaning water, and rotation The cleaning device is configured to include a control device for driving and controlling the rotation of the unit according to a predetermined sequence.

[0009]

According to the present invention, when the heat exchanger in the air conditioner is cleaned by adopting the above-mentioned configuration, after removing the unnecessary parts for the cleaning work from the air conditioner, it is electrically driven from the lower opening end of the air conditioner. A rotary unit mounting cylinder having a built-in rotary unit is mounted outside the fan motor so as to surround the motor, and the nozzle unit connected to the rotary unit is made to correspond to the heat exchanger of the air conditioner. Via a liquid feed hose and pump to a tank containing each liquid for detergent and cleaning, and then the lower open end of the air conditioner is covered with a funnel-shaped hood cover. The installation of the cleaning device of the present invention is completed by hanging the drainage hose fixed to the lower end into the drainage tank.

Then, in response to a command from the control device, the liquid feed pump is driven to feed a liquid such as detergent liquid to the nozzle unit, and at the same time, the electric motor in the rotary unit is started to move the nozzle unit by the rotary unit. The fan motor is rotated around the inner surface of the heat exchanger to wash the heat exchanger by ejecting a liquid such as detergent liquid from the nozzle of the nozzle unit. Since the liquid is jetted and discharged to the drainage tank, there is no possibility that the liquid or the like will leak to the outside in the washing work in which the liquid is ejected, and therefore, the floor surface, products, etc. are not contaminated during washing. In addition, the nozzle unit has a structure that sprays a liquid such as detergent liquid to perform cleaning work while swirling along the inner peripheral surface of the heat exchanger, so cleaning work is good even in the details of the heat exchanger. Since it is convenient to perform the cleaning, and since no manpower is required during the cleaning, the cleaning work can be performed quickly, easily and surely in combination with the effect of preventing the floor surface from being soiled.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the present invention is applied to a ceiling-embedded air conditioner will be described below with reference to FIGS. In FIGS. 1 and 2, reference numeral 21 indicates a state in which an air intake port a and an air outlet b are provided in the lower part to expose this part to the indoor side, and the upper part, which is the main body part, is housed in the ceiling part c and installed. 2 shows an indoor unit of an air conditioner (hereinafter, simply referred to as an air conditioner), in which a fan runner (not shown) is installed from the center toward the outside to suck in and discharge air, and the motor 22 On the outer surface of the heat exchanger 23, the heat exchanger 23, which is formed and housed in such a manner that the refrigerant supplied from an outdoor unit (not shown) exchanges heat with the air in the room, is formed and formed into a square shape, and the electric motor 22, the heat exchanger 23, etc. The members and the like necessary for configuring the air conditioner 21 are contained in a box 25 having a heat insulating / soundproof material 24 such as felt attached to the inner peripheral surface thereof. Reference numeral 26 is a suspension bolt that suspends and holds the air conditioner 21 in the ceiling portion c.

Reference numeral 27 is a cleaning device for cleaning the heat exchanger 23 of the air conditioner 21. As shown in FIG.
A rotation unit 28 that is electrically driven and is arranged on the lower side of 2;
A rotary unit mounting cylinder (hereinafter, simply referred to as a mounting cylinder) 29 for holding the rotary unit 28 in a hanging state, and a heat exchanger 2
3, a nozzle unit 31 in which a plurality of nozzles 30 are arranged in the vertical direction, for example, and are jointly rotatably connected to the lower side of the rotary unit 28, and a nozzle unit that rotatably supports the nozzle unit 31. The supporting cylinder 32 and the supporting cylinder 32 have a schematic structure. Next, details of each constituent part will be described.

First, as shown in FIG. 3, the rotating unit 28 is rotatably fitted to the inner cylinder 33 that loosely fits the rotor shaft 22a of the fan motor 22 and the outer side of the inner cylinder 33 via a bearing member. The rotary cylinder 35, which is composed of an outer cylinder 34 having a tapered lower part and an inner cylinder 33 of the rotary cylinder 35, is fixed at a position where the rotor shaft 22a is loosely fitted to the rotary cylinder 35.
A mounting plate 36 for rotatably supporting the rotating cylinder 35, an electric motor 37 mounted on the mounting plate 36 at the side of the rotating cylinder 35 in parallel with the rotating cylinder 35, and a rotational force of the electric motor 37. Reduction gear 38 for decelerated rotation and transmission to the outer cylinder 34 of
It is composed of and. Reference numeral 39 in FIG. 3 denotes a screw hole screwed inside the tapered portion of the rotary cylinder 35. Further, the electric motor 37 for decelerating and rotating the rotary cylinder 35 can be driven by using any power source such as a commercial power source or a battery.

Next, as shown in FIG. 3, the mounting cylinder 29 for suspending and supporting the rotary unit 28 is fixed to the mounting plate 36 on the lower side and is loosely fitted on the lower side of the fan motor 22. Of the mounting cylinder 40 and a second mounting cylinder 41 that covers the rotary unit 28 suspended from the mounting plate 36 and is integrally mounted on the lower side of the first mounting cylinder 40. , A plurality of setscrews 42 screwed on the upper side of the first mounting cylinder 40 are pressed and held by the case side of the fan motor 22, so that the mounting cylinder 29 surrounds the fan motor 22. It can be hung at 22.

Next, as shown in FIG. 3, the nozzle unit 31 has a screw hole 39 formed in the taper portion of the outer cylinder 34 of the rotary cylinder 35.
A pipe-shaped rotary shaft 43 having a distal end screwed onto and projecting downward from the mounting cylinder 29, and a pipe-shaped rotary shaft 43 that is communicatably supported by almost the middle portion of the rotary shaft 43 and extends outside the mounting cylinder 29. A plurality of nozzles 30 are attached to the L-shaped connecting pipe 44 so as to face the heat exchanger 23 and are mounted in a plurality of columns. Then, the nozzle unit 31 has a rotating shaft 43.
The lower end of the nozzle is supported by the nozzle unit support cylinder 32 fixed to the tip of the liquid feed hose 45 via a bearing member, so that it is jointly rotatably connected to the rotary unit 28. In addition, 46 is a blind plug inserted in the upper opening end of the rotary shaft 43,
It is fixed to the inside of the outer cylinder 34 of the rotary cylinder 35 with screws or the like.

As shown in FIG. 2, the liquid feeding hose (hereinafter, simply referred to as a feeding hose) 45 has a dolly 4 through a liquid feeding pump 47 and an electric switching valve (not shown).
It is connected to each tank 49, 50 of the detergent liquid and the washing water mounted on the tank 8 so that they can communicate with each other. Reference numeral 51 denotes a lower opening end d of the air conditioner 21 during a cleaning operation (this opening end d has a closed panel (not shown) equipped with a grill through which air can pass through at portions corresponding to the air intake port a and the air outlet port b. 1) is a hood cover that is closed except when cleaning), and as shown in FIGS. 1 and 2, a rectangular frame 52 that is framed in a rectangular shape in parallel with the lower peripheral edge of the air conditioner 21, and this square. A cover body 53 made of, for example, a vinyl sheet or the like, which is attached to the frame body 52 in an inverted pyramid shape (funnel shape), and the cover body 5
3 A hose connecting fitting 55 fixed so as to be able to communicate with the inside of the cover body 53 from the outside of the lower constriction 54, and a drainage hose 56 connected to this hose connecting fitting 55 are provided. The hood cover 51, as shown in FIG.
With the feeding hose 45 connected to the nozzle unit 31 pulled out outward from the upper portion of the cover body 53,
By hooking the hook portion at the tip of the locking metal fitting 57 attached to the square frame body 52 to the base end (see FIG. 1) of the suspension bolt 26, the lower opening end d of the air conditioner 21 is almost shielded from the outside. Can be encapsulated.

In FIG. 2, 58 is a drainage tank,
59 is a carriage for transporting the drainage tank 58, and 60 is a carriage 48.
Is a control device having a controller (not shown) for driving and controlling the cleaning device 27 of the present invention installed in the above. Further, the controller is a cleaning system using the cleaning device 27 of the present invention, that is, cleaning time, injection pressure, switching timing of cleaning liquid,
The electric motor 37 and the liquid feed pump 47 are configured to be capable of sequence control such as starting and stopping.

Next, the case of cleaning the heat exchanger 23 of the air conditioner 21 will be described. At the time of cleaning, first, a closed panel (not shown) provided with an air intake port a and an air outlet b located below the ceiling-embedded air conditioner 21 is removed, and subsequently, an air filter and a fan motor 22 are removed.
The parts such as the fan runner attached to the heat exchanger 23 that hinder the cleaning of the heat exchanger 23 are removed, and the lead wires are waterproofed to prevent water from entering. Thereafter, the rotor shaft 22a of the fan motor 22 is loosely fitted into the rotary cylinder 35 of the rotary unit 28 incorporated in the mounting cylinder 29 of the cleaning device 27 from the lower open end d of the air conditioner 21, and then the fan is removed. As shown in FIGS. 2 and 3, the mounting cylinder 29 incorporating the rotating unit 28 is fixed by pressing and fixing the required number of setscrews 42 screwed to the mounting cylinder 29 surrounding the outer periphery of the electric motor 22 to the outer circumference of the electric motor 22. In addition, the fan motor 22 is hung and held on the outer periphery of the fan motor 22 at a constant interval.

As described above, the mounting cylinder 2 of the cleaning device 27
After installing 9 in the air conditioner 21, the nozzle unit 31
The feed hose 45 is fixed to the nozzle unit support cylinder 32 that rotatably supports the. Subsequently, the inverted pyramid-shaped hood cover 51 is applied to the lower opening end d of the air conditioner 21, and the locking metal fitting 57 attached to the square frame body 52 of the cover 51 is hooked on the hanging bolt 26 of the air conditioner 21. The hood cover 51 is suspended from the air conditioner 21 with the feeding hose 45 pulled out. As a result, as shown in FIG. 2, the lower opening end d of the air conditioner 21 can be covered with the hood cover 51 substantially shielded from the outside. Further, a drainage hose 56 is connected to the narrowed opening 54 of the hood cover 51 via a hose connection fitting 55.

In the above-mentioned state, after the cleaning system such as the cleaning time, the spraying pressure of the cleaning liquid, and the switching timing is set in advance by the operation unit (not shown) of the control device 60, the electric motor 37 and the liquid feed pump 47 are switched. It is activated by operation. When the electric motor 37 is activated, its rotational force is reduced by the reduction gear 38.
Is transmitted to the rotary cylinder 35 of the rotary unit 28 via
The outer cylinder 34 of the rotary cylinder 35 is inserted through the bearing member into the inner cylinder 3
Rotate around 3. That is, the rotary cylinder 35 of the rotary unit 28 is rotated about the rotor shaft 22a of the fan motor 22. By the rotation of the rotary cylinder 35, the nozzle unit 31 which is screwed to the rotary cylinder 35 and which is connected and fixed by the blind plug 46 and hangs down the mounting cylinder 29 is supported by the nozzle unit support cylinder 32. Then, the rotary cylinder 35 and the rotary cylinder 35 rotate together. Therefore, the nozzle unit 3
The L-shaped connecting pipe 44 connected to 1 turns around the attachment tube 29 along the inner peripheral surface of the heat exchanger 23.

When the liquid feed pump 47 is activated, the flow path is switched to the detergent liquid side by an electric switching valve (not shown), and the detergent liquid is fed from the tank 49 first.
5 is delivered with a predetermined jet output. The detergent liquid fed to the feed hose 45 is supplied to the nozzle unit 31, and is sprayed toward the heat exchanger 23 through the connecting pipe 44 and the nozzles 30 which are vertically arranged in a vertical portion of the connecting pipe 44, thereby exchanging heat. The dirty part of the vessel 23 is washed. Detergent liquid contaminated by this washing sequentially drops into the cover body 53 of the hood cover 51, flows down through the drainage hose 56 into the drainage hose 56, and is stored in the drainage tank 58. Moreover, since the nozzle unit 31 has a structure that swirls along the inner peripheral surface of the heat exchanger 23, the detergent liquid can be sprayed to every corner of the heat exchanger 23 to be washed, The heat exchanger 23 can be uniformly washed in any part. Further, when cleaning the heat exchanger 23, the fan motor 2
Since 2 is completely surrounded by the mounting tube 29, the detergent liquid is not scattered and adheres to it, so that its operation is not hindered at all.

When the washing with the detergent liquid is completed, the electric switching valve is automatically switched to stop the feeding of the detergent liquid, and instead, washing water (clean water) is passed from the tank 50 through the feeding hose 45 to the nozzle unit 31. And is sprayed from the nozzle 30 toward the heat exchanger 23. The detergent liquid remaining in the heat exchanger 23 is washed away by the jetting of the wash water, and the heat exchanger 23 is washed. The liquid that has washed the heat exchanger 23 flows down into the hood cover 51 as it is, and is stored in the drainage tank 58 via the drainage hose 56. Even when the cleaning water is sprayed, the nozzle unit 31 is swung by the rotating unit 28, so that the detergent liquid remaining in the gaps of the heat exchanger 23 can be washed out well.
Then, when the spraying of the detergent liquid and the cleaning water is completed (cleaning work of the heat exchanger 23), the liquid feed pump 47 is stopped by a command from the control device 60. Further, the electric motor 37 is also de-energized and the heat exchanger 23 of the nozzle unit 31
Stop the turning motion along the inner surface.

When the cleaning operation of the heat exchanger 23 by the cleaning device 27 is completed, the rectangular frame body 52 of the hood cover 51.
The locking metal fitting 57 that holds the hook is unlocked from the hanging bolt 26, and the hood cover 51 enclosing the lower opening end d of the air conditioner 21 is removed from the air conditioner 21. Loosen the set screw 42 that is pressed and held on the outer periphery of the fan 22 to remove the fan motor 22 of the mounting tube 29.
Then, the cleaning device 27 is removed from the inside of the air conditioner 21. In this state, after the inside of the air conditioner 21 is wiped with a dust cloth or the like, the air conditioner 21 is reassembled to complete the cleaning and cleaning work of the heat exchanger 23.

FIG. 4 shows a second embodiment of the cleaning device 27 of the present invention. The difference from the first embodiment of FIG. 3 is that the nozzle unit 31 is attached to the place where the blind plug 46 of the nozzle unit 31 is attached. A piston 61 that moves upward by the inflow pressure of the liquid fed inside is attached, and a micro switch 62 is attached to the lower end of the inner cylinder 33 of the rotary cylinder 35 of the rotary unit 28 so as to face the piston 61. , Further mounting plate 36
The cleaning device 27a is configured by including a battery 63 for driving the electric motor 37 on the upper surface side corresponding to the fan electric motor 22. When using, the pressure of the liquid flowing into the nozzle unit 31 reaches a predetermined value. When it reaches, piston 6
1 is pushed to turn on the micro switch 62, whereby the electric motor 37 is started by using the battery 63 as a driving power source, and the nozzle unit 31 is rotated.
To turn. In this way, by installing the activation means (switch means) of the electric motor 37 for activating the nozzle unit 31 in the rotation unit 28, during cleaning work,
The nozzle unit 31 does not swirl unless liquid such as cleaning water is supplied to the nozzle unit 31,
When the cleaning operation of the heat exchanger 23 is being prepared, the electric power of the electric motor 37 is mistakenly turned on, whereby the nozzle unit 31 suddenly swirls to damage the inside of the air conditioner 21 or to prepare the cleaning operation. It is possible to surely solve the problem of injuring a working worker. In addition, since the electric motor 37 cannot be driven unless the pressure of the liquid ejected from the nozzle 30 of the nozzle unit 31 reaches a predetermined pressure or more, it is possible to save energy in the drive power supply.

[0025]

As described above, according to the present invention, a nozzle unit having a nozzle for ejecting a liquid such as cleaning water is swung along the inner peripheral surface of a heat exchanger in an air conditioner by an electrically driven rotary unit. The heat exchanger is configured to be sprayed with a liquid such as cleaning water to clean the heat exchanger, so that the heat exchanger can be swiftly and safely, and each part of the heat exchanger can be made uniform. Can be washed.

Further, since the means for driving the nozzle unit in rotation uses the small electric motor incorporated in the narrow space in the rotary unit and the ejection force generated when the liquid is ejected from the nozzle, the nozzle is used. The unit can be smoothly swung with low torque along the inner peripheral surface of the heat exchanger, and the electric motor itself can use low torque by utilizing the injection force generated when the liquid is ejected. Therefore, it is convenient because the electric rotation means of the nozzle unit can be incorporated by effectively utilizing the narrow space in the rotation unit.

Furthermore, the electrically driven rotary unit is
Since it is installed in the rotation unit mounting cylinder together with the electric motor for the fan of the air conditioner, there is no possibility that the performance of the electric motor will be deteriorated by the detergent liquid or cleaning water splashing and adhering when cleaning the heat exchanger. Since it is not present, the cleaning work can be smoothly and favorably performed without damaging the electric parts of the air conditioner.

Moreover, the adoption of the switch means utilizing the inflow pressure of the liquid such as cleaning water may cause the nozzle unit to unexpectedly swivel before cleaning to damage the air conditioner or injure the operator. Since it does not exist at all, there is also an advantage that the cleaning device for the heat exchanger in this type of air conditioner can be operated safely and easily.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cleaning state of an air conditioner using the cleaning device of the present invention.

FIG. 2 is a front view schematically showing the overall configuration of the air conditioner cleaning device of the present invention.

FIG. 3 is a cross-sectional view showing a longitudinal section of a main part of the cleaning apparatus of the present invention.

FIG. 4 is a longitudinal sectional view of a main part showing a second embodiment of the cleaning apparatus of the present invention.

FIG. 5 is an operation explanatory view for explaining a conventional cleaning method.

FIG. 6 is a front view showing an example of a conventional cleaning device in a partially longitudinal section.

[Explanation of symbols]

 21 Air Conditioner 22 Electric Motor for Fan 23 Heat Exchanger 27 Cleaning Device 28 Rotating Unit 29 Rotating Unit Mounting Tube 30 Nozzle 31 Nozzle Unit 35 Rotating Cylindrical Body 37 Electric Motor 45 Liquid Feeding Hose 47 Liquid Feeding Pump 51 Hood Cover 56 Draining Hose 61 piston 62 micro switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Munehiro Imao 1 Aichi-cho, Aichi-cho, Kasugai-shi, Aichi Pref. (72) Inventor Minoru Sugino 1 Aichi-cho, Kasugai-shi, Aichi-pref. 72) Inventor Tomokawa Tomowa Aichi Denki Co., Ltd. 1 Aichi-cho, Kasugai-shi, Aichi

Claims (4)

[Claims] 1. A rotating unit arranged below the electric motor for a fan of an air conditioner and electrically driven separately from the electric motor for a fan, and a rotary unit rotatably built therein and the electric motor is provided outside the electric motor for the fan. A rotary unit mounting cylinder arranged so as to surround the rotary unit mounting nozzle, and a liquid jet nozzle mounted below the rotary unit mounting cylinder so as to face the heat exchanger in the air conditioner, and fixed so as to rotate together with the rotary unit. A cleaning device for an air conditioner, comprising a cleaning device constituted by the nozzle unit described above, which is detachably attached to the fan motor. 2. A rotating unit that is electrically driven and arranged below a fan motor of an air conditioner, and a rotation unit that rotatably incorporates the rotating unit and surrounds the fan motor outside the fan motor. A unit mounting cylinder, and a nozzle unit in which a nozzle for liquid injection is mounted below the rotary unit mounting cylinder so as to face the heat exchanger in the air conditioner, and is fixed to the rotary unit so as to be rotatable together, further,
The fan includes a cleaning device that is provided between the nozzle unit and the rotating unit and that is configured to include a switch unit that is closed by an inflow pressure of a liquid flowing into the nozzle unit and energizes an electric drive unit of the rotating unit. A cleaning device for an air conditioner, which is detachably attached to an electric motor for use. 3. A means for electrically driving the rotary unit is provided in a rotary unit mounting cylinder, is drivingly coupled to the rotary unit via a reduction gear, and is driven by a commercial or battery drive power source. The cleaning device for an air conditioner according to claim 1 or 2, which is an electric motor. 4. The switch means for energizing the electric drive means of the rotary unit is disposed on the nozzle unit side and is activated by the inflow pressure of the liquid. The switch means is arranged in the activation range of the piston and is turned on / off. The cleaning device for an air conditioner according to claim 2, wherein the cleaning device is a switch member.