JP3163794B2 - Method and apparatus for cleaning heat exchanger of air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cleaning a heat exchanger in various types of air conditioners such as a ceiling mounted type.

[0002]

2. Description of the Related Art In general, for example, an air conditioner of a ceiling-embedded type has a casing opened downward and embedded in a ceiling plate, and a heat exchanger and a centrifugal fan are housed in the casing. On the other hand, a front panel is detachably attached to a lower opening of the casing. Then, by driving the centrifugal fan, the room air is sucked into the casing from the central suction port of the front panel, heat is exchanged by a heat exchanger, and cool air or the like is blown into the room from the side outlet of the front panel. I have.

[0003] In this type of air conditioner, although a filter is provided at the suction port, the heat exchanger may be clogged and the heat exchange efficiency may be reduced depending on the use conditions. In other words, fine air contaminants such as cigarette smoke, sand dust, oil smoke, and fiber dust cannot be collected by the filter and adhere to the heat exchanger, thereby reducing the heat exchange efficiency of the heat exchanger. There were problems such as water splashing from the heat exchanger fins and an unpleasant odor in the room.

In view of this point, for example, Japanese Utility Model Laid-Open No. 63-129
As disclosed in Japanese Patent No. 552, cleaning of a heat exchanger is performed. In other words, after removing the front panel, the centrifugal fan, and the like from the air conditioner and leaving only the heat exchanger in the casing, the washing water nozzle blows the washing water toward the heat exchanger, and the heat exchange is performed. I try to clean the bowl. The washing water sprayed on the heat exchanger and flowing down the fins of the heat exchanger is collected as drainage by a funnel-shaped water receiving member attached to the lower side of the casing. Further, as another example, as shown in Japanese Patent Application Laid-Open No. 1-147297, a liquid of a spray-type cleaning agent is sprayed on a heat exchanger, and thereafter, after cleaning using a negative pressure suction nozzle or the like. In some cases, the liquid is removed together with air contamination.

[0005]

By the way, in the above-described heat exchanger cleaning method, a curing operation is required to prevent the cleaning liquid from being applied to the floor below the air conditioner or the inside of the casing. This operation is complicated and time-consuming, and therefore, there is a problem that it is not possible to shorten the operation time of the entire cleaning operation. In addition, since the cleaning liquid (for example, made of an alkali chemical) is easily scattered around the heat exchanger, when the curing is insufficient, the cleaning liquid is unnecessary, for example, in the casing. There is a case where the heat insulating material is scattered, and in this case, the heat insulating material is corroded by the cleaning liquid. Further, there is a case where the cleaning liquid is dropped on the floor surface of the room and stains the floor surface.

[0006] The present invention has been made in view of the above-mentioned point, and makes it unnecessary to cure the lower side of an air conditioner and the inside of a casing, and also prevents the washing liquid from scattering and prevents the adverse effect of the washing liquid around the heat exchanger. The purpose is to obtain a configuration that can be used.

[0007]

In order to achieve the above object, a measure taken by the present invention is to form an air curtain on both sides of a cleaning liquid to be injected into a heat exchanger so that the cleaning liquid splashes to the outside. I tried to prevent that. Specifically, the invention according to claim 1 is directed to an air conditioner installed on a ceiling surface and including a heat exchanger (2), a fan, and the like in an air conditioner casing (8). It is intended for a heat exchanger cleaning method for removing dirt attached to (2). Then, the members such as the fan are removed from the air conditioner casing (8), and at least the heat exchanger (2) is left in the air conditioner casing (8). A plurality of liquid injection nozzles (6), (6) for injecting the cleaning liquid, and air blowing nozzles (7), (7) disposed on the left and right sides adjacent to the liquid injection nozzles (6), (6). The nozzle part (3) provided has a width dimension such that the cleaning liquid ejected from the liquid ejection nozzles (6) and (6) passes through the heat exchanger (2) is collected. ), (7) outlet (7
a) and a liquid receiving part (4) set to be larger than the distance between (7a) and a predetermined distance so as to sandwich the liquid receiving part (4) from the air flow primary side and the secondary side of the heat exchanger (2). I do . The cleaning liquid is sprayed from the liquid spray nozzles (6) and (6), and air is blown from the air blowing nozzles (7) and (7) to blow air to the left and right sides of the sprayed cleaning liquid. The nozzle part (3) and the liquid receiving part (4)
And are horizontally moved integrally along the extension direction of the heat exchanger (2).

[0008] The invention of claim 2 provides the above-mentioned claim 1.
A configuration for performing a cleaning method according to the invention described above, wherein the air conditioner is installed on a ceiling surface and includes a heat exchanger (2), a fan, and the like housed in an air conditioner casing (8). And a heat exchanger cleaning device for removing dirt attached to the heat exchanger (2). The heat exchanger (2) includes a nozzle portion (3) and a liquid receiving portion (4) integrally opposed to each other at a predetermined interval so as to sandwich the heat exchanger (2) from the primary side and the secondary side of the air flow. A plurality of liquid ejecting nozzles (6), (6) which are provided in the nozzle portion (3) in a vertical direction to eject the cleaning liquid, and on both left and right sides close to the liquid ejecting nozzles (6), (6). While the provided air blowing nozzles (7) and (7) are provided, the liquid receiving part (4) is provided.
To recover the washing liquid injected from the liquid injection nozzles (6) and (6) and passed through the heat exchanger (2).
The width of the nozzle is set larger than the distance between the air outlets (7a) and (7a) of the air blowing nozzles (7) and (7), and heat exchange between the nozzle part (3) and the liquid receiving part (4) is performed. It is configured to move horizontally along the extension direction of the vessel (2).

According to a third aspect of the present invention, in the heat exchanger cleaning device for an air conditioner according to the second aspect, an opening is formed in the nozzle portion (3) and the liquid receiving portion (4) so as to face each other. The casing (3a) has a nozzle (3) and an end (3d) facing the heat exchanger (2) of at least one of the casings (3a) and (4a). When the liquid part (4) moves horizontally along the extension direction of the heat exchanger (2), the liquid part (4) is formed to be curved so as to follow the shape of the heat exchanger (2).

According to a fourth aspect of the present invention, in the heat exchanger cleaning device for an air conditioner according to the third aspect, the upper surface of the casings (3a) and (4a) and the edge facing the heat exchanger (2). In addition, while avoiding direct contact of each casing (3a), (4a) with the air conditioner casing (8) and the heat exchanger (2), the casing (3a) and the heat exchanger (2) are contacted with the casing (8) and the heat exchanger (2). Rollers (10), (11) that are in contact with and rollable with respect to the air conditioner casing (8) and the heat exchanger (2).
Is arranged.

According to a fifth aspect of the present invention, in the heat exchanger cleaning device for an air conditioner according to the third or fourth aspect,
The casing (4a) of the liquid receiving part (4) is connected to the heat exchanger (2).
The nozzle portion (3) is configured to be exchangeable so that the interval between the nozzle portion (3) and the edge of the casing (3a) is changed according to the thickness dimension according to the number of rows.

The invention according to claim 6 is the invention according to claims 3 and 4.
Or in the heat exchanger cleaning device for an air conditioner according to 5, the casing (3) is provided between at least one of the casings (3a) and (4a) and the air conditioner casing (8).
A guide means (1) for guiding the casings (3a) and (4a) in the horizontal direction along the heat exchanger (2) while locking the casings (3) and (4) to the air conditioner casing (8).
5) and (16) are provided.

[0013]

According to the above construction, the following effects can be obtained in the present invention. First, according to the first and second aspects of the present invention, a member such as a fan is removed from the air conditioner casing (8) so that at least the heat exchanger (2) remains in the air conditioner casing (8). . Thereafter, the nozzle section (3) and the liquid receiving section (4) are opposed to each other so as to sandwich the air flow from the primary side and the secondary side of the heat exchanger (2), and the liquid jet nozzles (6), (6) And spray the cleaning liquid from
Air is blown out from the air blowing nozzles (7), (7) to blow air to the left and right sides of the cleaning liquid to be sprayed, and the nozzle part (3) and the liquid receiving part (4) are heat exchanger ( The heat exchanger (2) is washed by horizontally moving integrally along the extension direction of (2). Because of such a cleaning operation, air is present on both sides of the jetted cleaning liquid, and the air causes the cleaning liquid to be sprayed from the liquid jet nozzle (6) and the liquid jet nozzle ( The droplets of the cleaning liquid ejected from 6) and scattered by colliding with the fins of the heat exchanger (2) are guided to the liquid receiving portion (4) without being scattered outside. In addition, since the horizontal movement causes the portion of the heat exchanger (2) that has been cleaned with the cleaning liquid to be subsequently blown with air, the cleaning liquid remaining in the heat exchanger (2) is received by air. The cleaning liquid can be sent out toward the section (4), and the washing liquid can be prevented from remaining in the heat exchanger (2). In addition, since the liquid jet nozzles (6) and (6) are vertically arranged side by side, the width of the nozzle part (3) and the liquid receiving part (4) is not increased, and the size of the entire apparatus is reduced. Can be achieved.

According to the third aspect of the present invention, the nozzle portion (3)
When moving the liquid receiving part (4) horizontally, the casing (3
a), (4a) the edge (3) facing the heat exchanger (2);
d) will move along the curved part of the heat exchanger (2) without interfering with the curved part, and the curved part of the heat exchanger (2) will be reliably cleaned.

According to the fourth aspect of the present invention, each roller (1
The horizontal movement of the cleaning device is smoothly performed in accordance with the rolling operation of the air conditioner casing (8) and the heat exchanger (2) in (0) and (11). In addition, each roller (1
0) and (11), the casings (3a) and (4a)
And air conditioner casing (8), casings (3a), (4
Direct contact between a) and the heat exchanger (2) is prevented.

According to the fifth aspect of the present invention, the heat exchanger (2)
In accordance with the number of rows, the casing (4a) can be replaced and the interval between the nozzle portion (3) and the casing (3a) can be changed, and one washing device (1) can be replaced with a plurality of types of heat exchangers ( Applicable to 2).

In the invention according to claim 6, the guide means (1)
According to 5) and (16), the casings (3a) and (4a)
Is locked to the air conditioner casing (8), so that even if the operator releases his / her hand from the cleaning device, the cleaning device does not fall, and the guide means (15) and (16) are not provided. Since the casings (3a) and (4a) are guided in the horizontal direction along the heat exchanger (2), the operator only needs to move the cleaning device in the horizontal direction, and exchanges heat with the cleaning device. It can be moved along the vessel (2).

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 4, the heat exchanger cleaning device (1) according to the present example is for cleaning a heat exchanger (2) in an air conditioner of a ceiling embedded type, for example. The cleaning device (1) includes a nozzle portion (3), a liquid receiving portion (4), and a liquid collecting portion (5), and the liquid formed in a box having an open top. The nozzle part (3) and the liquid receiving part (4) are erected at the upper end of the collecting part (5) at a predetermined interval so as to face each other.
As shown in (2), the heat exchanger (2) is positioned so that the heat exchanger (2) is located between the nozzle part (3) and the liquid receiving part (4).
Attached to the heat exchanger (2) by spraying the washing liquid and the rinsing water from the nozzle part (3) located in the primary space of the heat exchanger to the liquid receiving part (4) located in the secondary space of the heat exchanger (2). To remove dirt. Further, as the upright support structure of the nozzle part (3) and the liquid receiving part (4),
A horizontal flange (5a) formed on the entire periphery of the upper end of the liquid recovery part (5) has lower ends of the casings (3a) and (4a) of the nozzle part (3) and the liquid receiving part (4). The horizontal flange portions (3b) and (4b) formed in the portions are connected. The height of the nozzle section (3) and the liquid receiving section (4) is set to be equal to or slightly larger than the height of the heat exchanger (2) to be cleaned.

As shown in FIGS. 5 and 6, the nozzle portion (3) includes liquid injection nozzles (6), (6) and air blow nozzles (7), inside the casing (3a).
(7) is accommodated. The casing (3
a) is open toward the liquid receiving portion (4), and the central portion of the open portion in a front view (see FIG. 6) includes:
Two liquid injection nozzles (6) arranged vertically above and below,
(6) is provided. This liquid injection nozzle (6),
(6) is connected to a liquid pipe (6a) extending vertically through the casing (3a).
The cleaning liquid or rinsing water supplied from a) is supplied to the liquid receiving section (4) at a predetermined injection pressure (for example, 25 kg / cm 2).
(See hatched portion A in FIG. 5 and FIG. 8). On the other hand, the air blowing nozzle (7) is a substantially rectangular parallelepiped container disposed from the upper end to the lower end of the casing (3a) so as to sandwich the liquid jet nozzle (6) from both left and right sides thereof. A slit-shaped air outlet (7a) extending over the entire vertical direction is formed on the front surface facing the liquid receiving portion (4). The lower end of the air outlet nozzle (7) is connected to an air supply pipe (7b), and the air supplied from the air supply pipe (7b) receives liquid from the air outlet (7a). 5 is blown out toward the portion (4) (the hatched portion B in FIG. 5).
reference). Therefore, in the state where the cleaning liquid or the rinsing water is jetted from the liquid jet nozzle (6) and the air is jetted from the air outlet (7a) of the air jet nozzle (7) at the same time, the jetted cleaning liquid or the rinsing water is jetted. The structure is such that air (shaded area B in FIG. 5) blown out in a film form exists on both sides of the rinsing water (shaded area A in FIG. 5). Also, the casing (3) of the nozzle portion (3)
In (a), a projection (3c) formed by projecting a part of the back surface is formed so as to secure a piping space for the liquid piping (6a), and an upper front end edge (3d) is flat. It is curved so as to be convex toward the liquid receiving part (4) when viewed.

On the other hand, the liquid receiving portion (4) is open toward the nozzle portion (3). As shown in FIG. 7, the width t2 of the open portion is equal to the width of the pair of left and right air outlets. The distance between the air outlets (7a) and (7a) of the nozzles (7) and (7) is set to be at least twice as large as the interval t1 (see FIG. 6), and is injected from the liquid injection nozzle (6). The cleaning liquid and the rinsing water can be reliably recovered.

A drain pipe (5b) is connected to the bottom of the liquid recovery section (5).
After washing the heat exchanger (2) blown out of the drain pipe (5b), the washing liquid or rinsing water collected in the liquid collecting section (5) through the liquid receiving section (4) is discharged from the drain pipe (5b). (See the arrow in FIG. 8).

On the other hand, this cleaning device (1)
b), (6a) and (7b) are connected to a cleaning device main body (not shown). In the main body of the cleaning device, a tank storing the cleaning liquid and the rinsing water, a liquid pump for supplying the cleaning liquid or the rinsing water from the tank to the liquid injection nozzle (6), and supplying air to the air blowing nozzle (7). An air blower, a liquid recovery tank for recovering the washing liquid and the rinsing water of the liquid recovery section (5), and a suction blower connected to the liquid recovery tank are provided.

Next, the operation of cleaning the heat exchanger (2) by the cleaning apparatus (1) configured as described above will be described. First, while removing the front panel from the air conditioner, the bell mouth, internal members, switch box, turbo fan, etc. are sequentially removed, and the heat exchanger (2) is placed in the air conditioner casing.
Only the remaining state.

Thereafter, as shown in FIGS. 1 and 8, from the lower side of the heat exchanger (2), a heat exchanger (2) is provided between the nozzle part (3) and the liquid receiving part (4). The cleaning device (1) is arranged so as to be positioned. Then, in this state, the liquid pump, the blower blower and the suction blower of the cleaning device main body are driven.
I do . At this time, the liquid pump communicates with the cleaning liquid in the liquid tank. Thereby, the liquid piping (6
The cleaning liquid supplied from a) to the liquid injection nozzle (6) is injected at a predetermined injection pressure toward the heat exchanger (2), and at the same time, is blown from the air supply pipe (7b) by the air blower blower nozzle (7). The air supplied to the air outlet (7a)
From the heat exchanger (2). In other words, in this state, the cleaning liquid injected from the liquid injection nozzle (6) passes through the heat exchanger (2) while removing dirt adhering to the fins of the heat exchanger (2) and receives the liquid. Collected in (4). Further, at this time, there is air blown in a film form on both sides of the cleaning liquid or the rinse water being sprayed,
This air functions like an air curtain, and is sprayed by the cleaning liquid sprayed from the liquid injection nozzle (6) or scattered by being injected from the liquid injection nozzle (6) and colliding with the fins of the heat exchanger (2). The splash of the cleaning liquid thus collected is guided to the liquid receiving section (4) and collected by the liquid collecting section (5) without being scattered outside the cleaning apparatus (1) by the air (see FIG. 5). . Also, since the inside of the liquid recovery tank is in a negative pressure state due to the driving of the suction blower, the drain pipe (5
The b) and the periphery of the liquid recovery section are also in a negative pressure state, whereby the droplets of the cleaning liquid are guided and recovered by the liquid recovery section (5).

In this way, by moving the cleaning device (1) at a low speed along the extension direction (horizontal direction) of the heat exchanger while the cleaning liquid and the air are being jetted, (2) It is possible to continuously clean the entire surface. Further, when the cleaning device (1) is horizontally moved in this manner, the portion of the heat exchanger (2) that has been cleaned by the cleaning liquid is then blown with air, so that the heat exchanger (2) The cleaning liquid remaining on the heat exchanger (2) can be sent out toward the liquid receiving part (4) by air, and the cleaning liquid can be prevented from remaining in the heat exchanger (2). In addition, when such a cleaning device is horizontally moved, as described above, the casing (3a) of the nozzle portion (3).
Is curved so that its upper front end portion (3d) is convex toward the liquid receiving portion (4), so that it can be moved along the curved portion of the heat exchanger (2). The curved portion of the heat exchanger (2) can be surely cleaned, and the entire heat exchanger can be reliably cleaned.

After the cleaning operation using the cleaning liquid, the operation proceeds to a rinsing operation. In this operation, the liquid pump is connected to the rinsing water of the liquid tank, and the injection of the rinsing water from the liquid injection nozzle (6) and the blowing of air from the air blowing nozzle (7) are performed in the same manner as described above. Do. By this operation, the heat exchanger (2) can be rinsed without splashing of the rinse water to the outside of the cleaning device (1), and at the same time, the rinse water is drained by air. Thus, the work of cleaning the heat exchanger (2) is completed. When the washing operation is completed, a turbo fan,
Assemble the switch box, internal components, and bellmouth front panel and return the air conditioner to its original state.

[0027] Thus, according to the configuration of the present embodiment, since there is no such thing as the washing liquid or the rinsing water is scattered to the outside, the curing of interior air conditioner lower or casing to be eliminated
Wear. For this reason, the cleaning operation can be simplified and the cleaning time can be shortened, and the adverse effect of the cleaning liquid around the heat exchanger due to the scattering of the cleaning liquid can be prevented.
In addition, since the liquid jet nozzles (6) and (6) are vertically arranged side by side, the width of the nozzle part (3) and the liquid receiving part (4) is not increased, and the size of the entire apparatus is reduced. Can be achieved.

The casing (4) of the liquid receiving part (4)
a) is exchangeable, and the casing (4a)
Are prepared in a plurality of types having different longitudinal dimensions. Thereby, according to the thickness dimension of the heat exchanger (2), that is, the number of rows of the heat exchanger (2), the casing (4a) can be replaced to change the interval with the nozzle portion (3). ,
One cleaning device (1) can be applied to a plurality of types of heat exchangers (2).

Second Embodiment Next, a second embodiment according to the fourth aspect of the present invention will be described. This embodiment relates to the improvement of the casings (3a) and (4a) of the nozzle section (3) and the liquid receiving section (4), and the other configuration is the same as that of the first embodiment. Only the casings (3a) and (4a) will be described.

As shown in FIGS. 9 to 11, each of the casings (3a) and (4a) has a vertical roller (1) on its upper surface.
, Are provided with horizontal rollers (11), (11),... At the upper end portion of their inner ends. As shown in FIG. 9, the vertical roller (10) has a protrusion (3c) in the casing (3a) of the nozzle (3).
The casing (4a) of the liquid receiving part (4) is provided at two places at a predetermined interval in the horizontal direction at one place at the center of the upper surface. Then, each vertical roller (1
, (10), ... are small-diameter metal balls desired upward from small-diameter openings (3e) and (4c) formed on the upper surfaces of the casings (3a) and (4a) as shown in FIG. The lower side is supported by a bracket (10a) whose longitudinal section is formed in a hat shape. Therefore, the horizontal movement in the cleaning operation of the cleaning device (1) is performed by bringing the vertical roller (10) into contact with the lower surface of the air conditioner casing (8) and rolling the lower surface.

On the other hand, horizontal rollers (11), (11),.
As shown in FIG. 9, each of the casings (3a), (4
In the upper end portion of a), they are respectively disposed at three places at predetermined intervals in the horizontal direction. Then, each horizontal roller (1
1), (11), ... are rubber rollers rotatably supported by a shaft member (4d) projecting downward from the lower surfaces of the casings (3a) and (4a), as shown in FIG.
A part of the rubber roller is used as a casing (3a), (4a)
Are provided so as to protrude from the end face of the hologram. Therefore, horizontal movement in the cleaning operation of the cleaning device (1) is performed by bringing the horizontal roller (11) into contact with the upper end of the end face of the heat exchanger (2) and rolling the upper end of the end face. Has become.

As described above, according to the configuration of the present embodiment, the cleaning device (1) comes into contact with the air conditioner casing (8) and the heat exchanger (2) via the rollers (10) and (11). Therefore, the horizontal movement of the cleaning device (1) can be smoothly performed with the rolling operation of the rollers (10) and (11), and the workability is greatly improved. Not only that, but also the casings (3a), (4a)
And air conditioner casing (8), casings (3a), (4
Since there is no direct contact between a) and the heat exchanger (2),
Damage to each member can also be prevented.

As a modification of the horizontal roller, FIG.
As shown in, the portion case, which is disposed in the horizontal roller (11 ') to adopt a configuration in which the shaft supporting the horizontal rollers (11') by a bolt nut structure casing (3a),
If (4a) is slightly recessed downward,
It is possible to prevent a nut or the like from protruding from the upper end surfaces of the casings (3a) and (4a), so that only the vertical roller can be brought into contact with the air conditioner casing.

(Third Embodiment) Next, a third embodiment according to the sixth aspect of the present invention will be described. In this example, the casing (3a) of the nozzle portion (3) is used.
Since the other configuration is the same as that of the first embodiment described above and relates to the improvement around the upper end, the casing (3
a) Only the upper peripheral portion will be described.

As shown in FIG. 17, the casing (3a) of the nozzle portion (3) of the cleaning apparatus according to the present embodiment is adapted to be locked and held with the air conditioner casing (8). Specifically, the casing (3) of the nozzle portion (3)
The upper surface position of a) is the casing (4a) of the liquid receiving section (4).
15 is set slightly below the upper surface position of FIG.
As shown in FIG. 17 to FIG. 17, a substantially key-shaped bracket (15) is provided on the upper surface of the casing (3a) of the nozzle portion (3).
Is screwed. The bracket (15) includes a mounting horizontal portion (15a) abutting on the upper surface of the casing (3a), a vertical portion (15b) bent upward with a small dimension from a front end of the mounting horizontal portion (15a), It is provided with a locking horizontal portion (15c) extending horizontally from the upper end of the vertical portion (15b) toward the liquid receiving portion (4).
As shown in FIGS. 17 and 18, a guide member (16) is provided inside the heat exchanger (2) on the lower surface of the air conditioner casing (8). The guide member (16) includes a horizontal portion (16a) abutting on the lower surface of the air conditioner casing (8), a vertical portion (16b) bent downward with a small dimension from an outer end of the horizontal portion (16a), A locking portion (16c) extending inward in the horizontal direction from the lower end of the vertical portion (16b) is provided. Further, the locking portion of the guide member (16) is not formed over the entire circumference, but is partially cut out, and the cut-out portion (16) is formed.
d) The length dimension is set equal to or slightly larger than the horizontal dimension of the bracket (15). Also,
The guide member (16) is detachable from the air conditioner casing (8) by screwing, and the screwed position is welded to the air conditioner casing (8) to screw the support bolt of the drain pan. Nut (N),
(N), which match the ... arrangement position of the guide member (16), in a state where the drain pan is removed,
The nuts (N), (N),... Are attached to the air conditioner casing (8). Thus, the bracket (15) and the guide member (1)
The guide means referred to in claim 6 is constituted by 6).

With such a configuration, in the cleaning operation of the cleaning device (1) in this example, first, the guide member (16) is attached to the lower surface of the air conditioner casing (8) by screwing. This mounting operation is performed by using the nut for supporting the drain pan as described above. Thus, the guide member (16)
After installing the cleaning device (1), the guide member (16)
Is disposed at a position corresponding to the notch portion (16d). In this state, the bracket (15) and the guide member (1)
6) is not locked , and the cleaning operation described in the first embodiment is started from this state. And
In this cleaning operation, when the cleaning device (1) is moved in the horizontal direction, as shown in FIG. 17, the locking horizontal portion of the bracket (15) disposed on the nozzle (3) of the cleaning device (1). and (15c), resign engagement locking portion and (16c) of the guide member mounted to the air conditioning casing (8) (16)
It will be that the worker the cleaning device (1) does not like to fall even release the cleaning device (1). Further, since the locking portion (16c) of the guide member (16) is provided along the heat exchanger (2), the operator only needs to move the cleaning device (1) in the horizontal direction, and the cleaning device (1) is moved. (1) is guided and moved by the locking portion (16c). Therefore, the workability of the cleaning operation is greatly improved, and the burden on the operator is reduced. In this example, the casing (3a) of the nozzle portion (3) is locked to the air conditioner casing (8). However, the casing (4a) of the liquid receiving portion (4) is fixed to the air conditioner casing (8). It is good also as a structure which is locked to.

In each of the embodiments described above, the cleaning apparatus for the ceiling-mounted air conditioner has been described.
The present invention is not limited to this, and may be adopted in a cleaning device for a ceiling-suspended air conditioner. Further, in each embodiment, the nozzle portion (3) is disposed on the primary side of the heat exchanger, and the liquid receiving portion (4) is disposed on the secondary side of the heat exchanger so that the cleaning liquid is injected from the primary side. Alternatively, the nozzle part (3) may be arranged on the secondary side of the heat exchanger, and the liquid receiving part (4) may be arranged on the primary side of the heat exchanger, so that the cleaning liquid is injected from the secondary side. In this case, the heat exchanger (2)
The dirt adhering to the primary side end portion of the fin can be effectively removed. Also, in this case,
The end face of the casing (4a) of the liquid receiving section (4) needs to be curved in accordance with the curved state of the heat exchanger (2).

[0038]

As described above, according to the present invention, the following effects can be obtained. According to the method of the invention described in claim 1 and the apparatus of the invention described in claim 2, droplets of the cleaning liquid sprayed from the liquid spray nozzle (6) or heat generated by spraying from the liquid spray nozzle (6) by air. The splash of the cleaning liquid scattered by colliding with the fins of the exchanger (2) is guided to the liquid receiving portion (4) without scattered outside, so that the curing is performed as in the conventional case. This eliminates the need for an operation, thereby simplifying the operation of cleaning the heat exchanger and shortening the operation time of the operation. Also,
The portion of the heat exchanger (2) that has been cleaned by the cleaning liquid is then blown with air, so that the cleaning liquid remaining in the heat exchanger (2) is directed toward the liquid receiving section (4) by air. The cleaning liquid can be sent out and the cleaning liquid can be prevented from remaining in the heat exchanger (2), and the cleaning operation and the cleaning liquid removing operation can be performed continuously, thereby improving workability. it can. Further, since the liquid jet nozzles (6) and (6) are provided vertically, the width of the nozzle portion (3) and the liquid receiving portion (4) are not increased, and the size of the entire device is reduced. Can be achieved.

According to the third aspect of the invention, at least one of the heat exchangers (2) of the casings (3a) and (4a).
When the nozzle portion (3) and the liquid receiving portion (4) move horizontally along the direction in which the heat exchanger (2) extends, the edge (3d) facing the heat exchanger (2) is shaped like the heat exchanger (2). When the nozzle portion (3) and the liquid receiving portion (4) are horizontally moved, the casings (3a) and (4)
The edge (3d) of the heat exchanger (2) facing the heat exchanger (2) can move along the curved portion of the heat exchanger (2) without interfering with the curved portion of the heat exchanger (2). The curved portion 2) can be reliably washed.

According to the fourth aspect of the present invention, the air conditioner casings of the casings (3a) and (4a) are provided on the upper surfaces of the casings (3a) and (4a) and on the edge facing the heat exchanger (2). (8) and the heat exchanger (2) while avoiding direct contact with the air conditioner casing (8) and the heat exchanger (2). Rollers (10) and (11) that can roll with respect to
Are arranged so that each roller (1
0) and (11), the horizontal movement of the cleaning device can be smoothly performed in accordance with the rolling operation with respect to the air conditioner casing (8) and the heat exchanger (2), and the workability can be improved. The rollers (10) and (11) prevent direct contact between the casings (3a) and (4a) and the air conditioner casing (8) and between the casings (3a) and (4a) and the heat exchanger (2). Thus, breakage of each member can be prevented.

According to the fifth aspect of the present invention, the casing (4a) of the liquid receiving section (4) is provided with a casing of the nozzle section (3) according to the thickness dimension corresponding to the number of rows of the heat exchanger (2). Since the configuration is made so as to be replaceable so as to change the distance from the edge of (3a), one cleaning device can be applied to a plurality of types of heat exchangers (2).

According to the invention, the casings (3a) and (4a) are provided between the at least one of the casings (3a) and (4a) and the air conditioner casing (8). ), The guide means (15) and (16) for guiding the casings (3a) and (4a) in the horizontal direction along the heat exchanger (2) are provided. Even if the operator releases his / her hand from the cleaning device, the cleaning device does not fall, and the guide means (15) and (16) are provided with the casing (3a),
(4a) is guided in the horizontal direction along the heat exchanger (2), so that the operator only needs to move the cleaning device in the horizontal direction, and the cleaning device is transferred to the heat exchanger (2). The cleaning operation can be greatly improved, and the burden on the operator can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a cleaning state by a cleaning device in a first embodiment.

FIG. 2 is a plan view of the cleaning device.

FIG. 3 is a view taken in the direction of arrow III in FIG. 2;

FIG. 4 is a view as viewed from an arrow IV in FIG. 2;

FIG. 5 is a sectional view taken along line VV in FIG. 3;

FIG. 6 is a sectional view taken along line VI-VI in FIG. 2;

FIG. 7 is a sectional view taken along line VII-VII in FIG. 2;

FIG. 8 is a vertical sectional view showing a state of spraying a cleaning liquid.

FIG. 9 is a diagram corresponding to FIG. 2 in a second embodiment.

FIG. 10 is a diagram corresponding to FIG. 3 in a second embodiment.

FIG. 11 is a view corresponding to FIG. 4 with a part cut away in the second embodiment.

FIG. 12 is a longitudinal sectional view showing a peripheral portion of a vertical roller.

FIG. 13 is a diagram illustrating a peripheral portion of a horizontal roller.

FIG. 14 is a view showing a modification of the horizontal roller.

FIG. 15 is a view corresponding to FIG. 2 in a third embodiment.

FIG. 16 is a diagram corresponding to FIG. 3 in a third embodiment.

FIG. 17 is a diagram corresponding to FIG. 4 in the third embodiment.

FIG. 18 is a diagram showing a state where a guide member is attached to an air conditioner casing.

[Explanation of symbols]

 (1) Cleaning device (2) Heat exchanger (3) Nozzle part (4) Liquid receiving part (3a), (4a) Casing (3d) Upper front edge (edge) (6) Liquid injection nozzle (7) Air Outlet nozzle (7a) Air outlet (8) Air conditioner casing (10) Vertical roller (11) Horizontal roller (15) Bracket (guide means) (16) Guide member (guide means)

Claims (6)

(57) [Claims] 1. An air conditioner installed on a ceiling surface and having a heat exchanger (2), a fan, and the like housed in an air conditioner casing (8), a dirt attached to the heat exchanger (2). A method of cleaning a heat exchanger, comprising removing a member such as a fan from the air conditioner casing (8) and leaving at least the heat exchanger (2) in the air conditioner casing (8). After being in the state, a plurality of liquid jet nozzles (6), (6) which are juxtaposed in the vertical direction and jet the cleaning liquid, and the liquid jet nozzles (6), (6)
A nozzle unit (3) provided with air blowing nozzles (7) and (7) disposed on the left and right sides close to the nozzle; and the heat exchanger (6) which is sprayed from the liquid spray nozzles (6) and (6). 2) The width of the air outlet nozzles (7), (7), (7a),
The liquid receiving section (4) set to be larger than the interval of (7a) is opposed to each other at a predetermined interval so as to sandwich the liquid receiving section (4) from the air circulation primary side and the secondary side of the heat exchanger (2). The cleaning liquid is sprayed from the liquid spray nozzles (6) and (6), and the air is blown from the air blowing nozzles (7) and (7) to blow air to the left and right sides of the sprayed cleaning liquid. A method for cleaning a heat exchanger of an air conditioner, wherein the part (3) and the liquid receiving part (4) are horizontally moved integrally along the extension direction of the heat exchanger (2). 2. An air conditioner installed on a ceiling surface and having a heat exchanger (2), a fan, and the like housed in an air conditioner casing (8). A heat exchanger cleaning device for removing the heat exchanger, wherein the heat exchanger (2) is opposed to the nozzle portion (3) at a predetermined interval so as to sandwich the heat exchanger (2) from the primary side and the secondary side of the air flow. A plurality of liquid jet nozzles (6), (6) , which are integrally provided with a liquid part (4), and are provided in the nozzle part (3) in a vertical direction to jet a cleaning liquid; and the liquid jet nozzle (6). Air blow nozzles (7) and (7) are provided on the left and right sides adjacent to the liquid jet nozzles (6) and (6).
The width dimension of the cleaning liquid is greater than the distance between the air outlets (7a) and (7a) of the air blowing nozzles (7) and (7) so as to collect the cleaning liquid injected from the air exchanger and passing through the heat exchanger (2). The nozzle portion (3) and the liquid receiving portion (4) move horizontally along the extension direction of the heat exchanger (2).
A heat exchanger cleaning device for an air conditioner, wherein the heat exchanger cleaning device is configured to: 3. The heat exchanger cleaning device for an air conditioner according to claim 2, wherein the nozzle portion (3) and the liquid receiving portion (4).
Are provided with casings (3a) and (4a) having openings that are open to face each other.
The edge (3d) facing at least one of the heat exchangers (2) of (a) and (4a) has a nozzle portion (3) and a liquid receiving portion (4) extending along the extension direction of the heat exchanger (2). A heat exchanger cleaning device for an air conditioner, wherein the heat exchanger (2) is curved so as to follow the shape of the heat exchanger (2) when moving horizontally. 4. The heat exchanger cleaning device for an air conditioner according to claim 3, wherein each of the casings (3a) and (4a) has a casing (3a) on an upper surface thereof and an edge facing the heat exchanger (2). ), (4a), while avoiding direct contact with the air conditioner casing (8) and the heat exchanger (2), while contacting the air conditioner casing (8) and the heat exchanger (2). (8) A heat exchanger cleaning device for an air conditioner, wherein rollers (10) and (11) rotatable with respect to the heat exchanger (2) are provided. 5. The heat exchanger cleaning device for an air conditioner according to claim 3, wherein the casing (4a) of the liquid receiving portion (4) has a thickness dimension corresponding to the number of rows of the heat exchanger (2). A heat exchanger cleaning device for an air conditioner, characterized in that the nozzle portion (3) can be exchanged so that the distance between the nozzle portion (3) and the edge of the casing (3a) is changed according to the condition. 6. The heat exchanger cleaning apparatus for an air conditioner according to claim 3, 4 or 5, wherein the casing (3a),
Between at least one of the casings (4a) and the air conditioner casing (8), the casings (3a) and (4a) are locked with the casing (8) while being locked to the casing (8).
A heat exchanger cleaning device for an air conditioner, comprising guide means (15) and (16) for guiding a) and (4a) in a horizontal direction along the heat exchanger (2).