JP3319923B2 - General-purpose cleaning equipment for air conditioners - 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 for automatically cleaning a heat exchanger to which oily dirt has adhered by using a cleaning liquid in a ceiling-mounted air conditioner. The present invention relates to a general-purpose cleaning device for an air conditioner that can be used for various types of indoor units.

[0002]

2. Description of the Related Art A ceiling-mounted air conditioner, in which an indoor unit of an air conditioner is installed above the ceiling or suspended from the ceiling, is used from the viewpoint of improving heat exchange efficiency and effectively utilizing the indoor floor surface. It is particularly suitable for offices and restaurants. However, in these places, it is necessary to frequently clean the oil and smoke generated by smoking and cooking, since the oil and smoke adhere to the heat exchanger and the heat exchange function is rapidly deteriorated. This oily stain cannot be removed without using a detergent solution. However, using a scourer or a rag to wipe off dirt would be a high-altitude operation and would not be very efficient.

[0003] Therefore, for a ceiling-mounted type air conditioner,
As shown in FIG. 13, a method of spraying a detergent liquid onto a heat exchanger using an injection nozzle is performed. in this way,
Ventilation panels and fans for ventilation provided on the ceiling (not shown)
Then, a washing funnel 102 made of a transparent vinyl sheet and having a funnel shape is vertically provided so as to surround the outer periphery of the indoor unit casing 101, and a hollow 103 provided on a side surface of the washing fluid sink 102 is provided. Spray nozzle 104 for detergent and cleaning water
Is inserted. In the drawing, reference numeral 105 denotes a detergent liquid (cleaning liquid) reservoir, 106 denotes a suction pump, and 107 denotes a suction hose having a jet nozzle 104 attached to the tip. The washing liquid dripping from the heat exchanger is collected in a washing liquid reservoir 109 via a washing liquid receiver 102 and a drain hose 108. Also, "Japanese Patent Laid-Open No. 4-30
6496 "describes a technique of reciprocating left and right along a heat exchanger while holding a cleaning unit in which a discharge nozzle and a suction nozzle of a cleaning liquid (and air) are combined with an arrangement sandwiching a heat exchanger. It has been disclosed. In the case of an air conditioner suspended from the ceiling surface, the indoor unit is once removed from the ceiling surface, washed, and then attached again.

[0004] However, although the method of spraying the detergent liquid from the spray nozzle inserted into the bore of the above-mentioned washing liquid receiver is far better than the method of wiping with a rag, it involves the danger of working at heights. It also requires considerable effort. These difficulties are:
This is common to the apparatus disclosed in Japanese Patent Application Laid-Open No. 4-306496, in which the cleaning unit is reciprocated while the operator holds the cleaning unit in his hand. On the other hand, the method of once removing the indoor unit at the time of cleaning requires a considerable amount of time for the attaching and detaching work, and is a very irrational cleaning method.

Therefore, the applicant of the present application turned the injection nozzle, which was temporarily installed at the location where the ventilation fan was removed, while facing the inner peripheral surface of the heat exchanger, so that the heat could be completely automatically cleaned. Developed a washing device for exchangers, and first described in Japanese Patent Application Nos. 5-26998 and 5-26.
9699 ". The device of the invention of the prior application was created for an air conditioner having a structure in which a heat exchanger is arranged so as to surround a ventilation fan.

[0006]

However, the method of disposing the heat exchanger is not limited to the above, and two heat exchangers of a rectangular panel shape are opposed to each other with a fan interposed therebetween, or only one heat exchanger is provided. May be opposed to the fan in an appropriate arrangement. With respect to this type of air conditioner, the above-mentioned prior-art invention device cannot satisfactorily achieve its excellent cleaning performance. The inventor of the present application has further studied and, as a result, invented an automatic cleaning device for an air conditioner suitable for a structure in which one or more heat exchangers in the form of a rectangular panel are opposed to a ventilation fan, A patent application was previously filed as "Japanese Patent Application No. 7-55479."

[0007] However, this prior-art cleaning apparatus also has
There is still room for further improvement. This is because ceiling-mounted air conditioners have a heat exchanger installed inside the casing of the indoor unit so that the best air conditioning efficiency can be obtained according to the situation of each installation location, in addition to the size of the capacity. There are various types that have different arrangements. However, the above-described cleaning apparatus of the prior application is made to conform to the arrangement of the specific heat exchanger, and even if the size of the indoor unit is adjusted, the arrangement of the heat exchanger is changed. Did not respond to this difference. Therefore, an object of the present invention is to provide a general-purpose cleaning device for an air conditioner that can be shared by various types of indoor units in which the arrangement state of the heat exchanger is different.

[0008]

In order to achieve the above object, a general-purpose cleaning apparatus for an air conditioner according to the present invention is provided with a guide rail B which is detachably mounted between opposing side walls of a casing 201 of an indoor unit. An apparatus main body A equipped with an injection nozzle 30 which is mounted on the guide rail B so as to be able to reciprocate and injects the cleaning liquid toward the heat exchanger 100 arranged along the inner wall surface of the casing 201, and the reciprocation thereof Moving means C;
A cleaning liquid supply device E for supplying a pressurized cleaning liquid to the injection nozzle 30;
A swivel tube 26 driven by a swirling motor 31 and also serving as a supply path of a pressurized cleaning liquid is vertically assembled. At the end of the swivel tube 26, a pipe with a nozzle having the injection nozzle 30 attached to the outer peripheral surface thereof is provided. 29 is configured to be detachably connected. And, at the end of the turning cylinder 26, a horizontal pipe 2
8 may be detachably connected, and the pipe with nozzle 29 may be connected to the end of the horizontal pipe 28 in an upright manner.
Further, the guide rail B may be laid over the casing 201 by a laying member F provided with a height adjusting means 52 for varying the laid height position.

[0009]

Before the cleaning device is detachably attached to the casing 201 of the indoor unit, parts that prevent the heat exchanger 100 from being cleaned, such as a ventilation panel and a fan, are removed and placed. Thereafter, the guide rail B is detachably laid between the opposing side walls of the casing 201 using the laying member F. Thereafter, the apparatus main body A provided with the injection nozzle 30 is reciprocally mounted on the guide rail B, and a liquid supply hose extending from the cleaning liquid supply apparatus E is connected to the apparatus main body A.

The indoor unit is composed of two panel-like heat exchangers 10.
In the case of the type in which the nozzles 0 are arranged opposite to each other, a pipe 29 with nozzles in which two injection nozzles 30 are attached back-to-back so that they face the heat exchanger 100, respectively,
Directly to the end of In this case, the turning motor 31 is put in a rest state. Then, if a separately prepared washing liquid receiver is vertically provided below the casing, preparation for use of the washing device is completed. When the cleaning device is started in this state, the device main body A is reciprocated between both ends of the guide rail B by the reciprocating means C, and the mounted injection nozzle 30
The cleaning liquid is sprayed all the way to each of the pair of heat exchangers 100 that are opposed to each other to perform automatic cleaning.

Then, the four panel heat exchangers 100
In the case of a type of indoor unit in which the cleaning unit is started while the turning motor 31 is operated, the cleaning unit is reciprocated along the guide rail B, and the turning is performed. The moving injection nozzle 30 injects the cleaning liquid even to the two heat exchangers on the short side. When the interval between the two heat exchangers 100 in the longitudinal direction is large,
It is preferable to connect a horizontal pipe 28 to the revolving cylinder 26 and to connect a pipe 29 with a nozzle to the end thereof.

In the case of an indoor unit of a type in which four heat exchangers 100 are arranged in a substantially square arrangement in plan view,
By using the guide rail B having a length corresponding to this arrangement, the apparatus main body A is fixed to the center thereof, and the heat exchanger 100 can be thoroughly washed only by operating the turning motor 31.

The heat exchanger 1 depends on the type of the indoor unit.
If the height position of 00 or the height dimension is different,
The height of the guide rail B can be arbitrarily adjusted by the height adjusting means 52 attached to the bridging member F of the guide rail B.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, according to FIGS. 1 to 3 showing a state in which the cleaning device is attached to the indoor unit,
A schematic configuration of the cleaning device will be described. Inside the rectangular parallelepiped casing 201 of the indoor unit 200, a substantially rectangular tubular heat exchanger 100 is disposed along four circumferential wall surfaces. The ventilation fan motor and the like to be assembled inside the heat exchanger 100 have already been removed.

The opposite side wall 20 on the short side of the casing 201
One guide rail B is detachably provided between the lower edge portions 1a and 201a by a pair of members for mounting F, F. This guide rail B has a heat exchanger 100
The apparatus main body A to which the injection nozzle unit D for injecting the cleaning liquid is mounted is mounted so as to be able to reciprocate by an attached reciprocating means C. As shown in FIG. 2, a pressurized cleaning liquid is supplied to the injection nozzle unit D from a cleaning liquid supply device E.

Next, the detailed structure of the cleaning apparatus will be described in order. The guide rail B of this embodiment is made of a long rectangular cylinder made of stainless steel, and is straddled as described above with the diagonal direction of the rectangular cylinder oriented in the vertical and horizontal directions.

The apparatus main body A has the structure shown in FIGS. Reference numeral 1 denotes a horizontally disposed disk-shaped base, to which a moving motor 2 for reciprocating the apparatus main body A is vertically attached to one side of the upper surface thereof. On the base 1, rotating shafts 3, 3 are vertically penetratingly disposed at two equally spaced locations on both sides of a motor shaft 2 a.

At the upper end of each rotating shaft 3, a plane gear 4,
The shaft 4 is engaged with the plane gear 5 axially fitted on the motor shaft 2a so that the rotation of the moving motor 2 is transmitted. Drive rollers 6 for reciprocating movement of the apparatus main body A are fitted on the lower ends of the rotary shafts 3 and 3 respectively. As shown in FIG. 4, a V-shaped groove 6 a for pressing against the ridge of the guide rail B is provided on the outer peripheral surface of the rubber driving roller 6.

As shown in FIGS. 4 and 7, a guide rail B is provided below the base 1 in cooperation with a pair of drive rollers 6 and 6.
A pair of fixed shafts 8, 8 rotatably fitted with a driven roller 7 serving as a pinching member, protrudes in a cantilevered support state. 9 is a bracket for supporting the rotating shaft 3. Then, one set of each of the rotating shaft 3 and the fixed shaft 8
A coil spring 10 for urging the driven roller 7 so as to approach the driving roller 6 is stretched between both ends of the coil. The members 2 to 10 constitute a reciprocating means C of the apparatus main body A. In addition, the driven roller 7 made of plastic protects the device by idling at the time of abnormality.

Next, the structure of the cleaning liquid nozzle unit D will be described. As shown in FIG. 4, the injection nozzle unit D is assembled so as to straddle the base 1 and a cover cylinder 20 that covers the upper part of the base 1. That is, a hollow column 21 is erected on the upper surface of the base 1, and a horizontal bracket 22 is continuously provided on the upper end thereof. Rotary joint 2 attached to lower end of hollow support 21
3, a liquid supply hose 6 extending from the cleaning liquid supply device E;
5 are connected (see FIG. 2).

The tip of the horizontal bracket 22 is
0, and a hollow support shaft 24
Has been established. The hollow support shaft 24 has a bearing 2
5, and the revolving cylinder 26 is fitted via the mechanical seal 25a. The upper end of the revolving cylinder 26 passes through a shaft hole 20a at the center of the top surface of the cover cylinder 20, and a cap-shaped pipe joint 27 is screwed to the protruding end.

The pipe joint 27 and the rotary joint 23 communicate with each other via a liquid passage 22 a provided in the horizontal bracket 22. A horizontal pipe 28 having a predetermined length is welded to a through hole 27a provided on a side surface of the pipe joint 27. Further, an upward through-hole 28a is provided near the closed end of the horizontal pipe 28, and a pipe 29 with a nozzle is welded upright to the through-hole 28a. Injecting nozzles 30 are attached to a plurality of appropriate locations on the outer peripheral surface of the pipe with a nozzle 29 of a predetermined length whose upper end is closed. Instead of welding, the pipes 28 and 29 may be screwed in a liquid-tight manner using packing and made detachable.

A variable-speed turning motor 31 for turning the turning cylinder 26 is mounted on the upper surface of the bracket 22. Then, the pinion 32 axially fitted to the output shaft 31a is
The revolving cylinder 26 is revolved at a desired speed by meshing with a flat gear 33 externally fitted to the revolving cylinder 26.

Further, as shown in FIG. 4, a pressure-sensitive switch which opens and closes in accordance with the presence or absence of the supply of the pressurized cleaning liquid to the injection nozzle 30 is assembled in the liquid passage 22a of the horizontal bracket 22. Power is supplied to the moving motor 2 and the turning motor 31 only when the pressure cleaning liquid is supplied. This pressure-sensitive switch is composed of a cylinder 34 assembled so as to communicate with the liquid passage 22a, a spring 36 for constantly biasing a piston 35 inside the cylinder 34, and a micro switch 37 attached to the base 1. Have been. When the piston 35 pressed by the pressure of the pressurized cleaning liquid descends against the urging force of the spring 36, the tip of the piston 35 becomes the micro switch 37.
Are pressed to be turned on.

Next, FIGS. 4, 5 and 8 show the moving direction switching means G of the apparatus main body A. FIG. This moving direction switching means G
Is a switch 40 mounted on the upper surface of the base 1, a switching rod 42 reciprocally mounted in a guide groove 41 provided in the radial direction of the base 1, and shown in FIGS. Thus, the guide rail B is provided with a set of abutting members 43 which are provided near both ends of the guide rail B and which abut both ends of the switching rod 42 respectively. The contact member 43 is moved to an arbitrary position along the guide rail B and is fixed with a set screw, so that the reciprocating stroke of the apparatus main body A can be arbitrarily set.

As shown in FIG. 8, a projection 42a is provided at an intermediate portion of the switching rod 42 to press the actuator 40a of the changeover switch 40 to turn on the actuator 40a.
Further, stoppers 42b for restricting the moving range of the switching rod 42 are attached near both ends. Then, when a control device (not shown) receives an ON operation signal of the changeover switch 40, the rotation direction of the moving motor 2 is switched. Reference numeral 44 in FIG. 4 denotes a power cord.

Next, the guide rail B is connected to the casing 201.
In order to lay the bridge, a pair of laying members F, F shown in FIGS. 9 and 1 are used. The straddling member F is formed of the casing 2
The main body is a mounting bar 50 made of a metal square tube made of stainless steel or the like longer than the length of the short side of 01.
As shown in FIG. 9, a U-shaped bracket-shaped nut member 51 is slidably mounted on the left and right sides of the mounting bar 50 on the left and right sides, and can be fixed at an arbitrary position by a set screw 51a. .

And a screw rod 5 with a handle of a predetermined length.
2 (height adjusting means) is screwed from below into the screw holes provided at the distal ends of both legs of each nut member 51 in a penetrating manner. The upper end of the screw rod 52 is connected to the side wall 2 of the casing 201.
01a is rotatably connected to a fixing clamp 53 for holding the lower edge. Therefore, by rotating the screw rod 52, the nut member 51 moves up and down, so that the height position of the mounting bar 50 can be adjusted.

Further, to the mounting bar 50, gripping clamps 54 shown in FIG. 10 for gripping both ends of the rectangular tubular guide rail B are slidably mounted along the mounting bar 50. ing. The gripping clamp 54 includes a sliding member 55 having an engaging projection 55a on its upper surface for loosely fitting into a guide groove 50a provided in the longitudinal direction of the lower surface of the mounting bar 50.
And a clamp member 56 connected to one end on the lower surface side of the sliding member 55 via a hinge, and a clamp fitting 57 for fixing a state where the clamp member 56 is in contact with the sliding member 55. The guide rail B is gripped between a pair of V-shaped recesses provided on respective contact surfaces of the sliding member 55 and the clamp member 56.

Next, the cleaning liquid supply device E of this embodiment
It has the configuration shown in FIG. That is, on a carriage 60 on which this device is mounted, a detergent liquid tank 61, a cleaning liquid (water) tank 62, a liquid feed pump 63, a switching valve (not shown) for switching the connection between the tanks 61 and 62 and the liquid feed pump 63, and a device. The control unit 64 and the like for automatically controlling the operations of the main body A and the cleaning liquid supply device E according to an arbitrarily set program are mounted. Liquid supply hose 6 extending from liquid supply pump 63
5 is connected to the rotary joint 23 of the apparatus main body A.

In FIGS. 1 and 2, reference numeral 70 denotes a washing solution receiver.
The end of a drain hose 72, which is vertically provided below the ventilation hole 301 on the ceiling surface 300 using a hanging fitting 71 and is connected to a drain port 70 a at the lower end thereof, is inserted into the drain reservoir 73. 74
Is a liquid-proof curtain, the edge of the ventilation hole 301,
It plays the role of closing the gap created between the upper edge of the zero. The upper end of the liquid-proof curtain 74 is attached to the casing 201 of the indoor unit.
And is secured with a rubber band or the like, and the lower end is hung inside the washing liquid receiver 70.

Next, the operation of the above configuration will be described. To clean oily dirt attached to the heat exchanger 100 using the above-described cleaning device, first, a ventilation panel on the ceiling surface 300,
Parts such as a drain pan of the indoor unit 200, a ventilation fan motor, and the like (both not shown) that obstruct the cleaning operation are removed. Next, as shown in FIGS. 1 and 2, on each lower edge portion of the longitudinal side wall 201 a of the casing 201 of the indoor unit,
The straddling member F of the guide rail B is screwed and fixed by the fixing clamp 53 as described above. Then, each grip 54 is moved along the mounting bar 50,
Set it in the center.

On the other hand, the drive roller 6
4 and 7, the guide rail B is inserted between the and the driven roller 7 against the urging force of the coil spring 10, as shown in FIGS. In this state, both ends of the guide rail B are gripped by the gripping clamps 54, 54 as described above. As a result, the guide rail B to which the apparatus main body A is attached is in a state of being erected at the central portion in the longitudinal direction of the open lower surface of the casing 201. Then, the facing distance between the pair of contact members 43 is adjusted so as to match the longitudinal dimension of the heat exchanger 100.

Next, the rotary joint 23 at the lower end of the apparatus main body A
Is connected to the end of a liquid supply hose 65 extending from the cleaning liquid supply device E. Then, the operation program of the cleaning device is set by the control unit 64. That is, the heat exchanger 10
The injection pressure of the cleaning liquid, the moving speed of the apparatus main body A, the number of reciprocations, the turning speed of the turning cylinder 26, and the like are appropriately set according to the size of 0 and the degree of contamination. Further, as shown in FIGS. 1 and 2, a washing liquid receiver 70 is provided directly below the ventilation hole 301 on the ceiling surface, and a gap between the ceiling surface 300 and the upper edge of the washing liquid receiver 70 is prevented. When the curtain 74 is closed, the preparation for operating the cleaning device is completed. In this operation standby state, the cleaning liquid supply device E
3 is switched to the side where the detergent liquid is sucked.

Therefore, when the cleaning device is started, when the liquid feed pump 63 is started, the piston 35 constituting the pressure-sensitive switch is increased as the liquid pressure in the liquid passage 22a increases.
Descends against the force of the spring 36, and the microswitch 37
To start the moving motor 2 and the turning motor 31.

The rotation of the moving motor 2 is transmitted to the driving roller 6 after being decelerated, and the driving roller 6 is driven by the driven roller 7 and the coil spring 10 as described above.
Since the apparatus main body A is pressed against the guide rail B,
As shown in FIG. 3, the vehicle starts moving on the guide rail B in the outward direction as if it were a self-propelled vehicle running on the rail. At the same time, the nozzle-equipped pipe 29 to which the injection nozzle 30 is attached injects the detergent liquid toward the heat exchanger 100 while rotating around the swirl cylinder 26 at a predetermined speed.

When the apparatus main body A reaches one end of the guide rail B, one end of the built-in switching rod 42 comes into contact with a contact member 43 provided at one end of the guide rail B, and the rotation of the moving motor 2 is started. The changeover switch 40 for changing the direction is operated. As a result, the moving direction of the apparatus main body A is changed, and the apparatus main body A moves while continuously spraying the detergent liquid toward the return direction. Then, when reaching the other end of the guide rail B, the other end of the switching rod 42 comes into contact with the contact member 43 provided on the other end of the guide rail B, and returns to the forward direction again.

As described above, the heat exchanger 100 is formed in a rectangular tube shape in which two long heat exchangers each having a rectangular panel shape and a short heat exchanger are arranged in a rectangular shape in plan view. .
And, since the injection nozzle 30 keeps turning around the turning cylinder 26, the longer heat exchanger when the apparatus main body A moves, and the shorter heat exchanger when the moving direction is changed,
Each of them is sufficiently bathed in the detergent liquid, and the heat exchanger 10
The entire area of 0 is reliably cleaned.

When the apparatus main body A repeats the reciprocating motion a predetermined number of times as described above and the oily dirt of the heat exchanger 100 is completely removed, the control unit 64 switches the supply liquid to the injection nozzle 30 from the detergent liquid to the cleaning liquid. The switching valve provided in the liquid piping system is operated so as to switch to (in this case, water). However, the switching valve may be manually operated while observing the cleaning state of the heat exchanger 100. Then, after continuing the cleaning liquid injection step according to the above-described detergent liquid injection step for a predetermined time, the liquid feeding pump 63 is stopped. Accordingly, the moving motor 2 and the turning motor 31 are also automatically stopped by the pressure-sensitive switch, and a series of automatic cleaning steps of the heat exchanger 100 are completed.

Next, FIG. 11 illustrates the operation of the cleaning device in the case where the indoor unit has a type in which two rectangular panel-shaped heat exchangers 100 are arranged facing each other. In order to correspond to such an arrangement of the heat exchanger, the configuration of the injection nozzle unit D is slightly changed. That is, the turning cylinder 26
An extension pipe 58 is connected to the upper end of the heat exchanger 100 in place of the pipe joint 27 and the horizontal pipe 28 so as to correspond to the height position of the heat exchanger 100. And this extension pipe 58
A nozzle pipe 29 having two injection nozzles 30, 30 attached back to back is connected to the upper end of the nozzle.

In this embodiment, since the heat exchanger 100 is not disposed on the short side of the casing 201, there is no need to turn the injection nozzle 30, the turning motor 31 is stopped, and the moving motor 2 is stopped. A sufficient cleaning effect can be obtained simply by driving.

FIG. 12 illustrates the operation of the cleaning device in the case of a ceiling-suspended air conditioner. In this case, one heat exchanger 100 is disposed obliquely on one side along the long side of the casing 201. Therefore, the guide rail B is installed so as to be biased to the opposite side of the casing. The guide rail B is pulled down by rotating the screw rod 52. And the pipe 29 with a nozzle is directly connected to the upper end of the turning cylinder 26. Also in this case, there is no need to turn the injection nozzle 30 at all.

It should be noted that the object of the present invention can be achieved even if the detailed structure of the above configuration is appropriately changed. For example, as a spare pipe 29 with a nozzle, a pipe bent into an irregular shape such as an L shape or a Z shape may be prepared and placed. Further, a pinion may be used instead of the drive roller 6 constituting the reciprocating means C, and the pinion may be engaged with a rack provided on the guide rail B. Further, for the moving motor 2, various known switching mechanisms can be used as the rotating direction switching means, and the power sources of the moving motor 2 and the turning motor 31 may be batteries. or,
The interruption of the energization of these motors may, of course, be performed by a manual switch at hand.

[0044]

As is apparent from the above description, the general-purpose cleaning device for an air conditioner according to the present invention has various excellent effects as listed below. (A) The arrangement state of the heat exchanger in the casing of the indoor unit is different from each other. (B) Since it is an automatic cleaning type, it is free from conventional dangerous and difficult cleaning work at a high place. (C) Even an inexperienced person in cleaning work can quickly and surely clean. (D) The main body of the apparatus is made extremely compact, and the member for laying the guide rail can be attached to and detached from the casing of the indoor unit by almost one-touch operation. (E) Accordingly, the operation of attaching and detaching the cleaning device to and from the casing can be performed easily and quickly. (F) Since one type of apparatus main body and a member for straddling the apparatus main body can be shared for indoor units of various types and capacities, the operation rate of the cleaning apparatus can be sufficiently increased, and the economy is excellent. (G) Since the injection nozzle unit can be easily replaced with one suitable for the type of indoor unit, one type of washing device can be shared by various indoor units having different structures, which is convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment in which the apparatus of the present invention is used for cleaning an indoor unit of a ceiling-in-built type air conditioner, in which a use state is depicted as a perspective view.

FIG. 2 is a sketch drawing showing the overall configuration of the cleaning apparatus as a side view.

FIG. 3 is a plan view showing an arrangement state of a heat exchanger and a cleaning device in a casing of the indoor unit, as a plan view.

FIG. 4 is a longitudinal sectional view of the apparatus main body;

FIG. 5 is a plan view of the device with the cover of the apparatus main body removed.

FIG. 6 is a partial vertical sectional front view showing a reciprocating means of the apparatus main body.

FIG. 7 is a bottom view of FIG. 6;

FIG. 8 is a partial vertical sectional front view showing a moving direction switching unit of the apparatus main body;

FIG. 9 is a perspective view showing the configuration of the straddling member and the mounting state thereof.

FIG. 10 is a perspective view showing a configuration of the grip for the same as above.

FIG. 11 is a side view showing a use state of the air conditioner in which the arrangement of the heat exchanger is different.

FIG. 12 is a side view showing a state of use for an air conditioner in which the arrangement of the heat exchanger is further different.

FIG. 13 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Heat exchanger 200 Indoor unit 201 Casing 201a Opposite side wall 300 Ceiling surface 301 Ventilation hole A Main body B Guide rail C Reciprocating means D Injection nozzle unit E Cleaning liquid supply device F Straddling member G Moving direction switching means 1 Base 2 Move Motor 2a Motor shaft 3 Rotary shaft 4, 5 plane gear 6 Drive roller 6a V-shaped groove 7 Follower roller 8 Fixed shaft 9 Bracket 10 Coil spring 20 Cover cylinder 21 Hollow post 22 Horizontal bracket 22a Liquid passage 23 Rotary joint 24 Hollow support Shaft 25 Bearing 26 Swivel cylinder 27 Fitting 27a, 28a Through hole 28 Lateral pipe 29 Pipe with nozzle 30 Injection nozzle 31 Slewing motor 31a Output shaft 32 Pinion 33 Planar gear 34 Cylinder 35 Piston 36 Spring 37 Micro switch 40 Switching switch 40a Actuator 41 Guide Groove 42 Switching Rod 42a Projection 42b Stopper 43 Contact Member 44 Power Cord 50 Mounting Bar 51 Nut Member 52 Screw (Height Adjusting Means) 53 Fixing Clamp 54 Gripping Clamp 55 Sliding Member 56 Clamp Member 57 Clamp fitting 58 Extension pipe 60 Dolly 61 Detergent liquid tank 62 Cleaning liquid tank 63 Liquid supply pump 64 Control unit 65 Liquid supply hose 70 Cleaning liquid receiver 70a Drain outlet 71 Suspension fitting 72 Drain hose 73 Drainage reservoir 74 Liquid prevention curtain

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Futa Kawamura 390 Muramatsu, Shimizu-shi, Shizuoka Prefecture Air Conditioning Systems Division, Hitachi, Ltd. (72) Inventor Munehiro 1 Aichi-cho, Kasugai-shi, Aichi Aichi Electric (72) Inventor Minoru Sugino 1 Aichi-cho, Kasugai-shi, Aichi Pref. Aichi Electric Co., Ltd. (56) References JP-A-8-247696 (JP, A) JP-A-64-70179 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F28G 9/00 F24F 1/00 391

Claims (3)

(57) [Claims] 1. A guide rail B removably mounted between opposing side walls of a casing 201 of an indoor unit, and reciprocally mounted on the guide rail B and disposed along an inner wall surface of the casing 201. Heat exchanger 10
An apparatus main body A having an injection nozzle 30 for injecting a cleaning liquid toward zero, a reciprocating means C thereof, and a cleaning liquid supply device E for supplying a pressurized cleaning liquid to the injection nozzle 30; A swivel cylinder 26 driven by a swirling motor 31 and also serving as a supply path of a pressurized cleaning liquid is vertically mounted on the apparatus main body A. At the end of the swirl cylinder 26, the injection nozzle 30 is mounted on the outer peripheral surface. A general-purpose cleaning device for an air conditioner, wherein a pipe 29 with a nozzle attached thereto is detachably connected. 2. The horizontal pipe 28 is detachably connected to the end of the swivel cylinder 26, and the nozzle pipe 29 is connected to the end of the horizontal pipe 28 in an upright manner. General purpose cleaning equipment for air conditioners. 3. The guide rail B is laid over the casing 201 by a laying member F provided with a height adjusting means 52 for making the laid height position variable. 3. The general-purpose cleaning device for an air conditioner according to 1 or 2.