JP2003240488A - Cleaning device for heat-exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively remove dust and various germs deposited on a surface of a heat-exchanger. <P>SOLUTION: This cleaning device 16 is used to wash a cooler 4 comprising a plurality of heat-exchange fins, and a meandering coolant piping penetrated through the heat-exchange fins, and is provided with a water-spray pan 17 arranged to correspond to an upper side of the cooler 4, a splay pipe 18 for supplying water to the splay pan 17, and a plurality of water-splay holes 22, etc., formed in a bottom wall 21 of the spray pan 17, and the each water-splay hole 22 is formed into an oblong hole long along an extended direction of a coolant piping. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for cleaning a heat exchanger used in, for example, a prefabricated refrigerator or a cooling unit for a refrigerated warehouse.

[0002]

2. Description of the Related Art Conventionally, a ceiling-mounted cooling unit is attached to a prefabricated refrigerator or a refrigerated warehouse. In this cooling unit, a heat exchanger that serves as a cooler and a blower that ventilates the heat exchanger are installed, and the cool air that has exchanged heat with the heat exchanger and is cooled is circulated in the refrigerator by the blower. It was cooled to a predetermined temperature.

[0003]

By the way, this kind of heat exchanger is composed of a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. Dust and germs in the circulating air are attached by ventilation. If these dusts and miscellaneous bacteria are recirculated in the refrigerator, the food to be stored will be contaminated, resulting in unfavorable food hygiene.

The present invention has been made in order to solve the above-mentioned conventional technical problems, and provides a cleaning device capable of effectively removing dust and germs adhering to the surface of a heat exchanger. .

[0005]

According to a first aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. Which comprises a water sprinkler disposed corresponding to the upper side of the heat exchanger, a water sprinkling pipe for supplying water to the water sprinkler, and a plurality of water sprinkling holes formed in the bottom wall of the water sprinkler. The water spray holes are long holes that are long in the extending direction of the refrigerant pipe.

According to the first aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, A sprinkler plate corresponding to the upper side of the exchanger,
It is provided with a water sprinkling pipe for supplying water to the water sprinkler and a plurality of water sprinkle holes formed in the bottom wall of the water sprinkle, and these water sprinkle holes are long holes long in the extending direction of the refrigerant pipe. Therefore, the area in which the water discharged from the water spray pipe onto the water spray tray and flowing out from the water spray holes of the water spray tray hits the refrigerant pipe is enlarged. This improves the cleaning ability of the surface of the refrigerant pipe of the heat exchanger.

According to a second aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
It is characterized in that it is provided with a water spray pipe for supplying water to the water spray tray and a plurality of water spray holes formed in the bottom wall of the water spray tray, and these water spray holes are formed above the refrigerant pipe.

According to the second aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the heat exchanger comprising: A sprinkler plate corresponding to the upper side of the exchanger,
A water sprinkling pipe for supplying water to the water sprinkler and a plurality of water sprinkle holes formed in the bottom wall of the water sprinkle are provided, and since these water sprinkle holes are formed corresponding to the upper side of the refrigerant pipe,
The water discharged from the water spray pipe onto the water spray tray and flowing out from the water spray holes of the water spray tray comes into contact with the refrigerant pipe, and the surface of the refrigerant pipe is well cleaned.

Further, since the water hitting the refrigerant pipe bounces and also hits the heat exchange fins around it, the surfaces of these heat exchange fins can be cleaned well.

The cleaning device of the third aspect of the present invention is for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
The water spray pipe is provided with a water spray pipe for supplying water to the water spray tray, and a plurality of water spray holes are formed in the bottom wall of the water spray tray, and these water spray holes are formed at positions avoiding directly below the discharge holes of the water spray pipe. And

According to the third aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger including a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
The watering pipe is provided with a watering pipe for supplying water to the watering dish, and a plurality of watering holes formed on the bottom wall of the watering dish, and these watering holes are formed at positions avoiding immediately below the discharge holes of the watering pipe. Therefore, the water discharged from the sprinkling pipe onto the sprinkler is once stored in the sprinkler without directly flowing out from the sprinkling holes.

As a result, water can be uniformly sprayed from the plurality of water spray holes of the water spray tray, and the entire heat exchanger can be washed well.

According to a fourth aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
The water spray pipe is provided with a water spray pipe for supplying water to the water spray tray and a plurality of water spray holes formed in the bottom wall of the water spray tray, and the heat exchange fins are brought into contact with the water spray tray.

According to a fourth aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
It has a sprinkler pipe for supplying water to this sprinkler and a plurality of sprinkler holes formed in the bottom wall of the sprinkler, and since the heat exchange fins are in contact with the sprinkler, the sprinkler can be connected to the sprinkler from the sprinkler. The water discharged upward and flowing out from the water spray holes of the water spray tray smoothly travels to the surface of the heat exchange fins and flows down. This makes it possible to improve the cleaning performance of the heat exchange fin surface.

The cleaning apparatus according to the invention of claim 5 is for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
A water spray pipe for supplying water to the water spray tray and a plurality of water spray holes formed in the bottom wall of the water spray tray, and the side wall of the water spray tray parallel to the heat exchange fins is lower than the other side walls. Is characterized by.

According to the invention of claim 5, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
The watering pipe is provided with a watering pipe for supplying water to the watering dish and a plurality of watering holes formed in the bottom wall of the watering dish, and the side wall of the watering dish parallel to the heat exchange fins is lower than the other side walls. Therefore, even if the water spray holes are clogged, the water in the water spray tray will overflow from the side wall side parallel to the heat exchange fins.

As a result, in order to ventilate the heat exchanger,
This makes it possible to avoid the inconvenience of causing a malfunction due to the water overflowing from the sprinkler falling on the blower normally provided on the side wall side orthogonal to the heat exchange fins.

According to a sixth aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
The water spray pipe is provided with a water spray pipe for supplying water to the water spray tray and a plurality of water spray holes formed in the bottom wall of the water spray tray, and the water spray holes are arranged in a staggered manner.

According to the sixth aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. A sprinkler plate corresponding to the upper side of the exchanger,
The sprinkler has a sprinkler pipe for supplying water to the sprinkler and a plurality of sprinkler holes formed on the bottom wall of the sprinkler. Since these sprinkler holes are arranged in a staggered pattern, the sprinkler pipe can be placed over the sprinkler plate. The water discharged from the water spray holes of the water spray tray is divided into at least two directions and flows out.
It is possible to improve the cleaning effect of the heat exchanger.

The cleaning device of the invention of claim 7 is characterized in that, in each of the above inventions, the water spray tray is made of an antibacterial material.

According to the invention of claim 7, in addition to each of the above inventions, since the water sprinkler is made of an antibacterial material, it is possible to prevent or suppress the inconvenience of the growth of various bacteria in the water sprinkle. It will be.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a front view of a cooling unit 1 as an embodiment to which the present invention is applied, FIG. 2 is a plan view of the cooling unit 1, FIG. 3 is a vertical side view of the cooling unit 1, and FIG. Side views are shown respectively.

In each drawing, the cooling unit 1 of the embodiment is a ceiling-mounted unit such as a prefabricated refrigerator (not shown) which is mounted on the ceiling, and a condensing unit (not shown) provided outside the refrigerator is connected to a refrigerant pipe. Connected. The condensing unit is provided with a compressor, a condenser, and the like that form a refrigerant circuit.

The cooling unit 1 of the embodiment has a horizontally long rectangular steel plate outer case 2, a drain tray 3 attached to the bottom of the outer case 2, and a cooling as a heat exchanger housed in the outer case 2. It is composed of a device 4 and a plurality of blowers 6. The cooler 4 has a plurality of heat exchange fins 7 ... Arranged in parallel at a predetermined interval, and a meandering refrigerant penetrating the heat exchange fins 7 ... The pipe 8 is connected to the compressor and condenser of the condensing unit and a decompression device (not shown) to form a well-known refrigerant circuit.

In this case, the heat exchange fins 7 ... Are made of vertically elongated rectangular aluminum thin plates and are arranged side by side in the front-rear direction. Further, the refrigerant pipes 8 extend to the left and right and are arranged in a meandering shape in a vertical direction while detouring, and a plurality of upper and lower rows are formed in front and rear. An air suction port 11 is formed on the rear surface of the outer case 2, and the cooler 4 is mounted inside the outer case 2 so as to correspond to the inside of the air suction port 11.

On the other hand, three rectangular air discharge ports 12, ... Are formed on the front surface of the outer case 2, and a grill member 13 is attached to each air discharge port 12 ,. ing. The blowers 6 are attached to the inside of the grill member 13 and are arranged side by side on the air outflow side (front side) of the cooler 4. Also,
The drain tray 3 corresponds to the cooler 4 and the blower 6 ... downward, and a drain port 14 for connecting a hose (not shown) communicating with the outside of the refrigerator is formed at a position where the upper surface of the drain tray 3 is the lowest. Has been done.

The cleaning device 16 of the present invention is attached to the upper part inside the outer case 2 at a position corresponding to the upper side of the cooler 4. The cleaning device 16 is composed of a horizontally long rectangular sprinkler plate 17 having an opening on the upper surface and a sprinkler pipe 18 for supplying water to the sprinkler plate 17.
Is a ball valve 1 provided on one side of the outer case 2.
It is connected via 9 to an external water pipe or the like (not shown). The outer case 2 at a position corresponding to the ball valve 19 can be opened and closed.

The sprinkler plate 17 is made of an antibacterial stainless steel plate and has a size corresponding to the entire upper surface of the cooler 4. The bottom wall 21 of the sprinkler plate 17 has heat exchange fins 7 of the cooler 4.
... Abutting on the upper edge. Also, the bottom wall 2 of the watering tray 17
As shown in FIG. 7, a plurality of water spray holes 22 ... Each of the sprinkling holes 22 is a long hole extending in the left-right direction in which the refrigerant pipe 8 extends, and a plurality of sprinkling holes 22 are arranged side by side so as to correspond to above the refrigerant pipes 8 in each row, and In the embodiment, four rows are formed in the front and rear. Also,
The water spray holes 22 ... In each row are arranged in a staggered pattern in a staggered manner.

Furthermore, the left and right side walls 23, 23 of the water spray tray 17 oriented in the front-rear direction which is parallel to the heat exchange fins 7 ...
Are formed to be lower than the front and rear side walls 24, 24.
That is, the left and right side walls 23, 23 are formed to be lower than the front side wall 24 on the side of the blower 6.

On the other hand, the sprinkling pipe 18 corresponds to the upper center of the bottom wall 21 of the sprinkling tray 17, and is disposed across the left and right sides. As shown in FIG. It is located in the watering tray 17. Also, sprinkler pipe 1
A plurality of discharge holes 26 ... Are formed at the lower end of 8,
The discharge holes 26 and the water spray holes 22 of the water spray tray 17 are arranged so as not to vertically match with each other (FIG. 2). That is, the water spray hole 22 is formed at a position avoiding immediately below the discharge hole 26.

With the above construction, when the compressor of the condensing unit is operated, high-temperature and high-pressure refrigerant gas is discharged from the compressor, condensed in the condenser, and then decompressed by the decompression device to be cooled. It flows into the refrigerant pipe 8 of the container 4. At this time, the refrigerant takes heat from the surroundings by evaporating and exerts a cooling action. Due to this cooling action, the temperature of the refrigerant pipe 8 and the heat exchange fins 7 ...

Then, the blowers 6 ... Are operated, and the air in the refrigerator is sucked from the air suction port 11 and ventilated to the cooler 4. The air ventilated through the cooler 4 is heat exchange fins 7.
, And is cooled by exchanging heat with the refrigerant pipe 8 and discharged through the air blower 6 ... Thereby, the inside of the refrigerator is cooled to a predetermined temperature.

Due to such ventilation of the air in the refrigerator, dust and other germs in the air adhere to the surfaces of the refrigerant pipe 8 and the heat exchange fins 7 of the cooler 4. So, for example, once a month ~
Twice the ball valve 19 is opened and the water pipe 18 is opened twice.
Pour water from the water pipe. The water that has entered the water spray pipe 18 is discharged into the water spray tray 17 through the discharge holes 26 at the lower end.

The water that has flowed down into the water spray tray 17 is accumulated inside, and flows down from the water spray holes 22 ... to the cooler 4 below to wash away dust and other germs adhering to the surface to drain the drain tray 1.
It is accepted by 3. The water dropped on the drain tray 13 is discharged from the drain port 14 to the outside by a hose (not shown).

At this time, the water spray holes 22 of the water spray tray 17 ...
Is a long hole extending in the extending direction of the refrigerant pipe 8,
The area where the water discharged from the water spray pipe 18 onto the water spray tray 17 and flowing out from the water spray holes 22 of the water spray tray 17 hits the refrigerant pipe 8 is enlarged. As a result, the surface of the refrigerant pipe 8 of the cooler 4 can be washed well.

In particular, since the water spray holes 22 of the water spray tray 17 are formed above the refrigerant pipes 8, the water flowing out from the water spray holes 22 ... The surface of the refrigerant pipe 8 can be cleaned even better. Further, since the water hitting the refrigerant pipe 8 bounces and also reaches the surrounding heat exchange fins 7, ..., The heat exchange fins 7 ,.

Further, since the water spray holes 22 of the water spray tray 17 are formed at positions avoiding the positions directly below the discharge holes 26 of the water spray pipe 18, the water discharged from the water spray pipe 18 onto the water spray tray 17 is , The water is not directly discharged from the water spray holes 22 ... As a result, it is possible to uniformly spray water from the respective water spray holes 22 ... All over the water spray tray 17, so that the entire cooler 4 can be satisfactorily washed.

Further, since the heat exchange fins 7 of the cooler 4 are in contact with the bottom wall 21 of the water spray tray 17, they are discharged from the water spray pipe 18 onto the water spray tray 17 and flow out from the water spray holes 22. The flowing water smoothly flows down to the surface of the heat exchange fins 7 ... As a result, the heat exchange fins 7
・ ・ The surface can be cleaned well.

Further, since the plurality of water spray holes 22 ... Formed in the bottom wall 21 of the water spray tray 17 are arranged in a staggered pattern,
The water flowing out from the water spray holes 22 of the water spray tray 17 is divided into at least two directions and flows out, and it is possible to prevent the water from being unevenly flowed to one side of the refrigerant pipe 8 or the heat exchange fins 7. This makes it possible to further improve the cleaning effect of the cooler 4.

Here, when dust or the like is accumulated in the water spray tray 17 and the water spray holes 22 ... Are clogged, the water discharged from the water spray pipe 18 is collected in the water spray tray 17 and eventually overflows. However, the left and right side walls 23, 2 of the sprinkler 17
Since 3 is made lower than the front and rear side walls 24, 24, water will overflow from the left and right side walls 23, 23. That is, since there is no overflow to the front side where the blowers 6 ... Are present, it is possible to avoid the inconvenience that water overflowing from the sprinklers 22 falls onto the blowers 6 ...

Further, since the sprinkler plate 17 is made of antibacterial stainless steel, it is possible to prevent or suppress the inconvenience of propagation of various bacteria in the sprinkler plate 17, and to perform more hygienic cleaning. Like

In the embodiment, a cooling unit is adopted,
Although the cooler is cleaned by the cleaning device, the present invention is effective not only as the target heat exchanger but also for cleaning the condenser and the like.

[0043]

As described in detail above, according to the first aspect of the present invention, a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins is used for cleaning. In the cleaning device, a sprinkler arranged corresponding to the upper side of the heat exchanger, a sprinkler pipe for supplying water to the sprinkler, and a plurality of sprinkler holes formed in the bottom wall of the sprinkler. Since these water spray holes are long holes that are long in the extending direction of the refrigerant pipe, the area where the water discharged from the water spray pipe onto the water spray tray and flowing out from the water spray holes of the water spray tray hits the refrigerant pipe. Is expanded. This improves the cleaning ability of the surface of the refrigerant pipe of the heat exchanger.

According to the second aspect of the present invention, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. , A sprinkler arranged corresponding to the upper side of the heat exchanger, a sprinkler pipe for supplying water to the sprinkler, and a plurality of sprinkler holes formed in the bottom wall of the sprinkler, Since the water spray holes are formed above the refrigerant pipes, the water discharged from the water spray pipes onto the water spray trays, the water flowing out from the water spray holes of the water spray trays hits the refrigerant pipes, and the surface of the refrigerant pipes is good. To be washed.

Further, since the water hitting the refrigerant pipe bounces and also hits the surrounding heat exchange fins, the surfaces of these heat exchange fins can be cleaned well.

Further, according to the invention of claim 3, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. , A sprinkler arranged corresponding to the upper side of the heat exchanger, a sprinkler pipe for supplying water to the sprinkler, and a plurality of sprinkler holes formed in the bottom wall of the sprinkler, Since the sprinkling hole is formed at a position avoiding directly under the spouting hole of the sprinkling pipe, the water discharged from the sprinkling pipe onto the sprinkling tray is temporarily stored in the sprinkling tray without directly flowing out from the sprinkling hole. become.

As a result, water can be uniformly sprayed from the plurality of water spray holes of the water spray tray, and the entire heat exchanger can be satisfactorily washed.

Further, according to the invention of claim 4, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. , A sprinkler arranged corresponding to the upper side of the heat exchanger, a sprinkler pipe for supplying water to the sprinkler, and a plurality of sprinkler holes formed in the bottom wall of the sprinkler, Since the exchange fins are in contact with the water spray tray, the water discharged from the water spray pipe onto the water spray tray and flowing out from the water spray holes of the water spray tray is smoothly transmitted to the surface of the heat exchange fins and flows down. This makes it possible to improve the cleaning performance of the heat exchange fin surface.

Further, according to the invention of claim 5, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. , A sprinkler arranged corresponding to the upper side of the heat exchanger, a sprinkler pipe for supplying water to the sprinkler, and a plurality of sprinkler holes formed in the bottom wall of the sprinkler, Since the side wall of the sprinkler plate that is parallel to the exchange fins is lower than the other side walls, the water in the sprinkler plate will be parallel to the heat exchange fins should the clogging of the sprinkler holes occur. It comes to overflow from the side wall.

Thus, in order to ventilate the heat exchanger,
This makes it possible to avoid the inconvenience of causing a malfunction due to the water overflowing from the sprinkler falling on the blower normally provided on the side wall side orthogonal to the heat exchange fins.

Further, according to the invention of claim 6, there is provided a cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins. , A sprinkler arranged corresponding to the upper side of the heat exchanger, a sprinkler pipe for supplying water to the sprinkler, and a plurality of sprinkler holes formed in the bottom wall of the sprinkler, Since the water spray holes are arranged in a staggered pattern, the water discharged from the water spray pipe onto the water spray tray and flowing out from the water spray holes of the water spray tray comes to flow out in at least two directions. It is possible to improve the cleaning effect.

Further, according to the invention of claim 7, in addition to each of the above inventions, since the sprinkler plate is made of an antibacterial material, it is possible to prevent or suppress the inconvenience of the growth of various bacteria in the sprinkler plate. It will be possible.

[Brief description of drawings]

FIG. 1 is a front view of a cooling unit as an embodiment to which the present invention is applied.

FIG. 2 is a partially transparent plan view of the cooling unit of FIG.

3 is a vertical side view of the cooling unit of FIG.

FIG. 4 is an enlarged vertical side view of the upper portion of the cooling unit of FIG.

5 is a front view of a water sprinkler of the cooling unit of FIG. 1. FIG.

FIG. 6 is a side view of the watering tray of FIG.

FIG. 7 is a plan view of the watering tray of FIG.

[Explanation of symbols]

1 cooling unit 4 Cooler (heat exchanger) 6 blower 7 heat exchange fins 8 Refrigerant piping 16 Cleaning device 17 Sprinkler 18 Watering pipe 21 bottom wall 22 Sprinkling holes 23, 24 Side wall 26 Discharge hole

Claims (7)

[Claims] 1. A cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the cleaning device corresponding to an upper side of the heat exchanger. And a plurality of water spray holes formed in the bottom wall of the water spray tray, and these water spray holes extend through the refrigerant pipe. A heat exchanger cleaning device characterized by a long hole that is long in the direction in which it is located. 2. A cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the cleaning device corresponding to an upper side of the heat exchanger. And a plurality of water spray holes formed in the bottom wall of the water spray tray, and these water spray holes are provided above the refrigerant pipe. A heat exchanger cleaning device characterized by being formed correspondingly. 3. A cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the cleaning device corresponding to an upper side of the heat exchanger. And a plurality of water spray holes formed in the bottom wall of the water spray tray, and these water spray holes are used to discharge the water from the water spray pipe. A cleaning device for a heat exchanger, characterized in that it is formed at a position avoiding directly below the hole. 4. A cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the cleaning device corresponding to an upper side of the heat exchanger. And a plurality of water spray holes formed in the bottom wall of the water spray tray, and the heat exchange fins contact the water spray tray. A heat exchanger cleaning device characterized by being brought into contact with each other. 5. A cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the cleaning device corresponding to an upper side of the heat exchanger. And a plurality of water spray holes formed in the bottom wall of the water spray tray, the water spray tray being parallel to the heat exchange fins. The heat exchanger cleaning device is characterized in that the side wall of the dish is lower than the other side walls. 6. A cleaning device for cleaning a heat exchanger comprising a plurality of heat exchange fins and a meandering refrigerant pipe penetrating the heat exchange fins, the cleaning device corresponding to an upper side of the heat exchanger. And a plurality of water spray holes formed in the bottom wall of the water spray tray, and the water spray holes are arranged in a staggered manner. A heat exchanger cleaning device characterized by: 7. The heat exchanger cleaning device of claim 1, claim 2, claim 3, claim 4, claim 5, or claim 6, wherein the water spray tray is made of an antibacterial material. .