JP2022157492A - Ceiling embedded type air conditioner cleaning apparatus and mounting method - Google Patents

Abstract

To reduce a burden applied to a worker when mounting a cleaning device in a ceiling embedded type air conditioner.SOLUTION: The present invention relates to a cleaning apparatus for cleaning a ceiling embedded type air conditioner including a cylindrical housing and a heat exchanger disposed inside of the housing. The cleaning device comprises: a tray for closing a lower part of the housing; and a fluid ejection nozzle device including a nozzle part from which liquid is ejected, and a support member which supports the nozzle part, removably mounted to the tray. The tray is formed in a box shape of which the upper part is opened, and includes: a tray bottom part; an outer peripheral wall rising upward from an outer periphery of the tray bottom part; a mounting hole which is provided in the tray bottom part, for mounting the fluid ejection nozzle device therein; a discharge port which is provided in the tray bottom part, for discharging liquid waste of cleaning liquid therefrom; and an apparatus mounting part rising upward in an entire circumference at a peripheral edge of the mounting hole. The support member includes a first portion fitted to an inner peripheral surface of the apparatus mounting part and in the fluid ejection nozzle device, the support member is removably mounted to the tray from an opposite side of the apparatus mounting part by a fixture.SELECTED DRAWING: Figure 10

Description

The present invention relates to a cleaning device for a ceiling-embedded air conditioner.

2. Description of the Related Art Conventionally, there has been proposed a cleaning apparatus for cleaning a ceiling-embedded air conditioner (especially a heat exchanger) having an annular heat exchanger installed inside a cylindrical housing. For example, Patent Literature 1 discloses a cleaning device that includes a fluid ejection nozzle device capable of ejecting liquid and a tray to which the liquid ejection nozzle device is fixed. The washing device is attached to the ceiling-embedded air conditioner by bringing the tray to which the fluid injection nozzle device is fixed into close contact with the lower part of the housing of the ceiling-embedded air conditioner. Then, the heat exchanger is cleaned by injecting liquid from the fluid injection nozzle device.

JP 2017-67334 A

Here, in the technique disclosed in Patent Literature 1, the tray to which the fluid injection nozzle device is fixed is lifted up to the vicinity of the ceiling and attached to the lower part of the housing of the ceiling-embedded air conditioner. That is, when attaching the cleaning device to the ceiling-embedded air conditioner, the operator needs to lift both the tray and the fluid injection nozzle device at the same time. The weight of the tray and the weight of the fluid injection nozzle device are several kg each. For example, the saucer weighs about 4.0 kg and the fluid injection nozzle device weighs about 6.3 kg. Therefore, there is a problem that a heavy load is imposed on the operator when attaching the cleaning device to the ceiling-embedded air conditioner. As a result, the work efficiency of the worker is lowered.

In view of the above circumstances, an object of the present invention is to reduce the burden on a worker when attaching a cleaning device to a ceiling-embedded air conditioner.

A cleaning device according to a preferred aspect of the present invention is a cleaning device for cleaning a ceiling-embedded air conditioner having a cylindrical housing and a heat exchanger arranged inside the housing, a fluid injection nozzle device that is detachably attached to the tray, including a tray for covering a lower portion, a nozzle portion for injecting liquid, and a support member for supporting the nozzle portion; is formed in a box shape with an opening, a saucer bottom, an outer peripheral wall rising upward from the outer periphery of the saucer bottom, a mounting hole provided in the saucer bottom for mounting the fluid injection nozzle device, and a a discharge port for discharging waste liquid of the cleaning liquid; and a device mounting portion rising upward along the entire periphery of the mounting hole. The support member of the fluid injection nozzle device is detachably attached to the tray from the side opposite to the device attachment portion by a fastener.

According to the cleaning apparatus of the present invention, after the tray is attached to the housing of the ceiling-embedded air conditioner, the fluid ejection nozzle device can be attached to the tray from below. Therefore, compared to a configuration in which a tray to which the fluid injection nozzle device is fixed in advance is attached to the housing of the ceiling-embedded air conditioner, the load on the operator when attaching the cleaning device to the ceiling-embedded air conditioner can be reduced. is possible.

It is a perspective view which shows the structure of a common air conditioner. 1 is a perspective view of a typical fin heat exchanger; FIG. Fig. 2 is a schematic side view showing a state in which the cleaning device is attached to the ceiling-embedded air conditioner; 1 is a front view of a fluid injection nozzle device; FIG. 1 is a plan view of a fluid injection nozzle device; FIG. It is a top view of a saucer. It is a bottom view of a saucer. It is a sectional view of a saucer. Fig. 2 is a cross-sectional view of the cleaning device attached to the ceiling-embedded air conditioner; FIG. 10 is an enlarged view of the vicinity of the fluid injection nozzle device in FIG. 9;

A cleaning device 100 according to the present invention is a device for cleaning a ceiling-embedded air conditioner. FIG. 1 shows the structure of a general ceiling-embedded air conditioner (hereinafter referred to as "air conditioner A"). In the following description, the vertical direction will be referred to as the Z direction, and the directions orthogonal to each other in the horizontal plane will be referred to as the X direction and the Y direction.

As illustrated in FIG. 1, the air conditioner A includes a housing B with an open bottom surface, an annular heat exchanger C (for example, a heat exchanger with fins), and a blower provided in the central space of the heat exchanger C. D, and a detachable cover member F closely attached to the lower surface of the housing B.

The cover member F has an air intake port G located near the center and four air outlets H located around the air intake port G. As shown in FIG. The housing B is suspended from the slab by stay bolts J. The heat exchanger C may have, for example, a partially open annular shape, as illustrated in FIG. 2 .

FIG. 3 is a schematic diagram schematically showing the cleaning device 100 attached to an air conditioner. The cleaning device 100 is attached to the lower portion of the housing B (the end on the negative side in the Z direction) with the lid member F and the blower D removed.

As illustrated in FIG. 3, the cleaning device 100 includes a fluid injection nozzle device 40 and a saucer 50. As shown in FIG. 4 is a front view of the fluid injection nozzle device 40, and FIG. 5 is a plan view of the fluid injection nozzle.

A known device is arbitrarily adopted as the fluid injection nozzle device 40 used in the cleaning device 100 . As illustrated in FIGS. 4 and 5, the cleaning and storage device of this embodiment includes a first nozzle N1 (an example of the “nozzle portion”), a second nozzle N2, a shaft member U, and a support member 41. As shown in FIGS.

The support member 41 is a member for supporting the first nozzle N1 and the second nozzle N2. For example, the support member 41 is made of various metals. Specifically, the support member 41 includes a first portion 42 and a second portion 43 . The first portion 42 is a portion of the support member 41 located on the positive side in the Z direction. The first portion 42 is a cylindrical member.

The outer peripheral surface of the first portion 42 includes projections 46 provided over the entire circumference in the circumferential direction. In this embodiment, the protrusion 46 is made of an elastic material such as rubber. That is, the protrusion 46 is formed in an annular shape. For example, the projecting portion 46 is provided at a position close to the end on the positive side in the Z direction of the first portion 42 . The width (length in the Z direction) of the protrusion 46 is smaller than the height (length in the Z direction) of the first portion 42 .

The second portion 43 is a portion projecting from the first portion 42 . Specifically, the second portion 43 is a portion that protrudes in the XY plane from the lower end (the end on the negative side in the Z direction) of the first portion 42 . A second portion 43 is provided over the entire circumference of the first portion 42 . In this embodiment, the second portion 43 is formed so that the outer edge is circular in plan view. The end surface of the first portion 42 on the negative side in the Z direction is open. In other words, the lower end of the support member 41 is open.

A through hole 421 for mounting the fluid injection nozzle device 40 is formed in the second portion 43 . Although the configuration in which four through-holes 421 are formed is illustrated in this embodiment, the number of through-holes 421 is arbitrary. Details of the through hole 421 will be described later.

The first nozzle N1 is a nozzle that injects liquid (cleaning water). The second nozzle N2 is a nozzle that injects air. The first nozzle N1 ejects liquid onto the inner peripheral surface of the housing B while positioned inside the housing B. As shown in FIG. Similarly, the second nozzle N2 jets air to the inner peripheral surface of the housing B while positioned inside the housing B. As shown in FIG. After cleaning the casing B by injecting liquid from the first nozzle N1, the casing B is drained by injecting air from the second nozzle N2. It should be noted that providing the second nozzle N2 in the fluid injection nozzle device 40 is not essential.

The shaft member U is a member for supporting the first nozzle N1 and the second nozzle N2. A shaft member U is supported so as to extend upward from the surface of the first portion 42 on the positive side in the Z direction. Specifically, the first nozzle N1 and the second nozzle N2 are supported by the shaft member U so as to be movable in the vertical direction (Z direction). Also, the first nozzle N1 and the second nozzle N2 are supported so as to be rotatable about the shaft member U as a central axis. That is, the first nozzle N1 and the second nozzle N2 move up and down and rotate about a vertical axis. Note that FIG. 4 illustrates a configuration in which the support plate 47 passing through the shaft member U is placed on the surface of the first portion 42 on the positive side in the Z direction.

Various elements (for example, a driving device such as a motor and a control device) for moving the first nozzle N1 and the second nozzle N2 in the vertical direction and rotating them around the shaft member U are accommodated from the lower opening of the support member 41. However, illustration is omitted for convenience. Any known technique can be used for the configuration in which the first nozzle N1 and the second nozzle N2 are vertically moved and the configuration in which the first nozzle N1 and the second nozzle N2 are rotated about the vertical axis. Adopted.

Washing water is supplied to the first nozzle N1 through, for example, a supply pipe T1 connected to the first nozzle N1. Cleansing water is supplied to the supply pipe T1 through a tube connected to a tank filled with cleansing water. Air (compressed air) is supplied to the second nozzle N2 through, for example, a supply pipe T2 connected to the second nozzle N2. Air is supplied to the supply pipe T2 through a tube connected to the compressor. A known technique may be arbitrarily adopted for the structure for supplying cleaning water to the first nozzle N1 and the structure for supplying air to the second nozzle N2.

6 is a plan view of the saucer 50 viewed from the positive side in the Z direction, FIG. 7 is a bottom view of the saucer 50 viewed from the negative side in the Z direction, and FIG. - It is sectional drawing in P line.

The saucer 50 is a member for covering the lower part of the housing B, as illustrated in FIG. As illustrated in FIGS. 6 to 8, the saucer 50 is formed in a box shape with an open top (positive side in the Z direction). For example, the saucer 50 is made of a transparent material such as synthetic resin.

The saucer 50 includes a saucer bottom 51 and an outer peripheral wall 52 . The saucer bottom portion 51 is a parallel plate-like member in the XY plane, and is formed, for example, in a substantially octagonal shape without four corners. The outer peripheral wall 52 is a member that rises upward (positive side in the Z direction) over the entire outer periphery of the saucer bottom portion 51 .

The inner peripheral surface of the outer peripheral wall 52 is provided with a housing abutment portion 535e extending over the entire circumference in the circumferential direction. For example, the housing contact portion 535e is formed of an elastic member such as rubber. Then, the tray 50 is fixed to the housing B while the lower portion of the housing B is located inside the outer peripheral wall 52 (that is, so as to cover the lower portion of the housing B). The housing contact portion 535e functions as a packing for sealing the lower portion of the housing B and the tray 50. As shown in FIG.

The saucer 50 is fixed to the housing B by any method. For example, a hook is provided on the surface of the saucer bottom 51 on the negative side in the Z direction. Then, as illustrated in FIG. 3 , the tray 50 is fixed to the housing B by connecting the stay bolt J and the hook with a string-like member 70 . Note that the number of hooks is arbitrary.

As illustrated in FIGS. 6 to 8, the saucer bottom 51 is provided with a discharge port 55 and mounting holes 56 . The mounting hole 56 is a through hole for mounting the fluid injection nozzle device 40 and is provided in the center of the tray bottom portion 51 . The mounting hole 56 is formed in a circular shape. The diameter (diameter) of the mounting hole 56 is set such that the first portion 42 of the support member 41 can be inserted and the second portion 43 of the support member 41 cannot be inserted. In the following description, the surface of the saucer bottom 51 on the negative side in the Z direction is referred to as an installation surface 511 .

The discharge port 55 is a through hole for discharging the cleaning liquid used for cleaning. After washing the heat exchanger C, the waste liquid of the cleaning liquid is received by the receiving tray 50 and properly discharged through the discharging port 55 provided in the receiving plate bottom 51 by the drain hose connected to the discharging port 55. - 特許庁

At the peripheral edge of the mounting hole 56, a device mounting portion 57 is provided that rises upward (positive side in the Z direction) on the surface of the saucer bottom 51 on the positive side in the Z direction. Note that the height of the device mounting portion 57 is lower than the outer peripheral wall 52 of the tray 50 . The device mounting portion 57 is provided over the entire circumference of the mounting hole 56 . It can also be said that the device mounting portion 57 is formed in a cylindrical shape.

Specifically, the device mounting portion 57 includes a first mounting portion 571 and a second mounting portion 572 . The first attachment portion 571 is a portion located on the positive side in the Z direction, and the second attachment portion 572 is a portion located on the negative side in the Z direction. That is, the portion positioned above the first mounting portion 571 is the second mounting portion 572 . As illustrated in FIG. 8 , the inner diameter of the second attachment portion 572 is smaller than the inner diameter of the first attachment portion 571 . The first mounting portion 571 and the second mounting portion 572 are formed continuously.

The end of the first mounting portion 571 (the end on the negative side in the Z direction) is fixed to the peripheral edge of the mounting hole 56 . Note that FIG. 8 illustrates a configuration in which the first attachment portion 571 is provided so as to cover the inner peripheral surface of the attachment hole 56 . The height (the length in the Z direction) of the device mounting portion 57 is set according to the height of the support member 41 . Note that the height of the second mounting portion 572 is smaller than the height of the first mounting portion 571 .

The device mounting portion 57 is formed of an elastic material such as rubber, for example. It should be noted that it is not essential to form the entire device mounting portion 57 from an elastic material, and at least the inner peripheral surface of the device mounting portion 57 may be formed from an elastic material. It can also be said that the surface of the tray bottom portion 51 opposite to the device mounting portion 57 is the installation surface 511 .

A fixture 90 for attaching the fluid injection nozzle device 40 is provided on the tray 50 . The fastener 90 of this embodiment includes a screw member 91 and a fastener 92 . The screw member 91 is formed in the shape of a shaft extending along the Z direction, and has a thread groove formed on its surface. A screw member 91 is provided around the through hole 421 in the tray bottom portion 51 . Specifically, the screw member 91 is provided so as to extend downward from the installation surface 511 with the tip (positive end in the Z direction) fixed to the saucer bottom 51 . That is, screw member 91 includes a portion exposed from installation surface 511 . The screw member 91 is provided with a screw head at the end opposite to the tip (the end on the negative side in the Z direction). As can be understood from the above description, the screw member 91 is fixed to the saucer bottom portion 51 at its tip side and is provided so as to extend downward from the installation surface 511 .

FIG. 8 illustrates a configuration in which the tip of the screw member 91 passes through the saucer bottom portion 51 and is further inserted into the device mounting portion 57 . That is, in a plan view, the screw member 91 is fixed at a position where the tray bottom portion 51 and the device mounting portion 57 overlap each other. Further, the screw member 91 includes a portion protruding in the X direction on the tip side thereof, and the portion penetrates the outer peripheral surface from the inside of the device mounting portion 57 .

The fastener 92 is a member that can be fastened with the screw member 91 and has a screw hole that is screwed into the screw member 91 . As illustrated in FIG. 8 , a fastener 92 is arranged on a portion of the screw member 91 exposed from the installation surface 511 . By turning the fastener 92, the fastener 92 moves vertically while being screwed to the screw member 91. - 特許庁Note that the fastener 92 moves vertically between the screw head of the screw member 91 and the installation surface 511 . In the present embodiment, it can also be said that the screw member 91 and the fastener 92 are an integrated fixture 90 .

As illustrated in FIG. 5 , a through hole 421 formed in the second portion 43 allows the screw member 91 of the fixture 90 to pass therethrough. Specifically, the through hole 421 includes the first hole portion 211 and the second hole portion 211 continuously positioned along the circumferential direction of the attachment hole 56 of the saucer bottom portion 51 (that is, the circumferential direction of the first portion 42 of the support member 41). and a hole 212 .

The first hole portion 211 is a portion formed to have a size through which the fastener 92 can be inserted. The second hole portion 212 is a portion formed to have a size through which the screw member 91 can be inserted but through which the fastener 92 cannot be inserted.

The fluid injection nozzle device 40 is detachably attached to the tray 50 . Specifically, the support member 41 of the fluid injection nozzle device 40 is detachably attached to the tray 50 . In this embodiment, a configuration in which the first portion 42 is attached to the saucer bottom portion 51 is exemplified. FIG. 9 is a cross-sectional view of the fluid injection nozzle device 40 attached to the tray 50. As shown in FIG. In addition, in FIG. 9, the cross section of the housing|casing B of the air conditioner A and the heat exchanger C is also illustrated. 10 is an enlarged view of the vicinity of the mounting hole 56 in FIG. 9. FIG.

As illustrated in FIGS. 9 and 10, the first portion 42 is fitted to the inner peripheral surface of the device mounting portion 57, and the second portion 43 is in contact with the periphery of the mounting hole 56 in the mounting surface 511. In this state, the second portion 43 is detachably attached to the tray 50 from below (from the side opposite to the device attachment portion 57) by the fastener 90. As shown in FIG. That is, the fluid injection nozzle device 40 is detachably attached to the tray 50 .

In this embodiment, the first portion 42 of the support member 41 is fitted to the inner peripheral surface of the second attachment portion 572 . 9 and 10 illustrate a configuration in which the projection 46 of the first portion 42 contacts the inner peripheral surface of the second mounting portion 572 so that the first portion 42 is fitted to the second mounting portion 572 . The projecting portion 46 functions as a packing for bringing the support member 41 and the device mounting portion 57 into close contact with each other.

It does not matter whether or not the portion of the first portion 42 other than the protrusion 46 contacts the inner peripheral surface of the device mounting portion 57 . The inner diameter of the device mounting portion 57 is appropriately set according to the outer diameter of the first portion 42 . However, the inner diameter of the first attachment portion 571 is such that the support member 41 can easily move vertically and circumferentially when the protrusion 46 is in contact (or not in contact) with the inner peripheral surface of the first attachment portion 571 . Make it movable. On the other hand, the inner diameter of the second mounting portion 572 is adjusted so that the projection 46 contacts the inner peripheral surface of the second mounting portion 572 without any gap (that is, the projection 46 is press-fitted into the second mounting portion 572). ) is set.

The second portion 43 (surface on the positive side in the Z direction) contacts the installation surface 511 with the screw member 91 inserted through the through hole 421 (first hole portion 211). Then, the second part 43 is attached to the saucer 50 from below (the side opposite to the saucer bottom 51 ) with the fastener 92 . As can be understood from the above description, with the screw member 91 in the through hole 421 (the first hole portion 211), the screw member is mounted so that the second portion 43 abuts on the installation surface 511 around the through hole 421. By fastening a fastener 92 to 91 , the second portion 43 is detachably attached to the saucer 50 with a fastener 90 .

As can be understood from the above description, the first portion 42 is an element that fits into the inner peripheral surface of the device mounting portion 57 , and the second portion 43 is a portion of the mounting surface 511 of the saucer bottom portion 51 that is located in the mounting hole 56 . It is an element that abuts on the surroundings.

Note that the first portion 42 is not limited to the configuration illustrated above as long as it can be fitted to the inner peripheral surface of the device mounting portion 57 . Similarly, the shape of the second portion 43 is not limited to the above examples as long as it can come into contact with the mounting surface 511 of the tray 50 . Further, the presence or absence of an opening on the lower side of the support member 41 (first portion 42) is also optional.

A method of attaching the fluid injection nozzle device 40 to the tray 50 will be described below. With the tray 50 fixed to the lower part of the housing B in advance, the fluid ejection nozzle device 40 is attached to the tray 50 .

First, the fastener 92 is moved to a position where the length of the section (hereinafter referred to as "installation section") M between the fastener 92 and the saucer bottom 51 in the screw member 91 exceeds the thickness of the second portion 43. . In addition, the installation section M is shown in figure in FIG.

Next, the support member 41 (fluid injection nozzle device 40) is mounted so that the installation section M is positioned in the first hole 211 by inserting the fastener 92 into the first hole 211 of the second portion 43 of FIG. move up. Then, the support member 41 is rotated along the circumferential direction of the mounting hole 56 so that the installation section M is positioned within the second hole portion 212 .

After the support member 41 is moved upward so that the first portion 42 is fitted to the inner peripheral surface of the second mounting portion 572 and the second portion 43 is in contact with the circumference of the through hole 421 in the installation surface 511, , the fastener 92 is fastened to the screw member 91 (the fastener 92 is moved upward).

When removing the fluid injection nozzle device 40 from the receiving tray 50, after the fastener 92 is moved downward, the support member is mounted so that the installation section M moves from the inside of the second hole 212 to the first hole 211. After rotating 41, the support member 41 is moved downward.

As can be understood from the above description, in the present embodiment, the second portion 43 is detachably attached to the saucer bottom portion 51 by the fastener 90 from the side opposite to the device attachment portion 57 . Therefore, after attaching the tray 50 to the housing B of the air conditioner A, the fluid ejection nozzle device 40 can be attached to the tray 50 from below. Therefore, compared to the configuration in which the tray 50 to which the fluid injection nozzle device 40 is fixed in advance is attached to the housing B of the ceiling-embedded air conditioner, the load on the operator when attaching the cleaning device 100 to the ceiling-embedded air conditioner is reduced. can be reduced.

According to the configuration in which the device mounting portion 57 includes the first mounting portion 571 and the second mounting portion 572 , the first portion 42 (projection portion 46 ) is located at a position corresponding to the first mounting portion 571 and the saucer bottom portion 51 After adjusting the position of the support member 41 with respect to , the first portion 42 can be fitted into the second mounting portion 572 .

By forming the inner peripheral surface of the device mounting portion 57 and the protrusion 46 from an elastic material, there is an advantage that the first portion 42 can be closely fitted to the device mounting portion 57 without a gap.

According to the configuration in which the through-hole 421 includes the first hole portion 211 and the second hole portion 212, there is an advantage that the fastener 92 and the screw member 91 can be integrated into the fastener 90. FIG.

<Modification>
Each form illustrated above can be variously modified. Specific modification modes are exemplified below. It is also possible to appropriately combine two or more aspects arbitrarily selected from the following examples.

(1) In the above embodiment, the screw member 91 whose tip is fixed to the saucer bottom portion 51 and the fastener 92 provided movably between the installation surface 511 of the screw member 91 and the screw head are fixed. 90, the fixture 90 may have any configuration as long as the second part 43 (fluid injection nozzle device 40) can be detachably attached to the tray bottom portion 51 from the side opposite to the device attachment portion 57. be. Depending on the configuration of the fixture 90 , it is not essential to provide the through hole 421 in the second portion 43 .

Similarly, the configuration of the screw member 91 is arbitrary as long as the fastener 92 can be fastened. For example, a screw member 91 without a screw head may be used. The shape of the through hole 421 provided in the second portion 43 is arbitrarily adopted depending on the configuration of the screw member 91 .

(2) In the above embodiment, the second portion 43 is detachably attached to the tray bottom portion 51, but the configuration for attaching the support member 41 to the tray 50 is not limited to the above example. That is, the portion to be attached to the receiving plate 50 may be other than the second portion 43 of the support member 41 . Similarly, the portion of the tray 50 to which the support member 41 is attached may be other than the tray bottom portion 51 .

For example, a configuration is adopted in which a stopper is provided on one of the outer peripheral surface of the first portion 42 and the inner peripheral surface of the device mounting portion 57, and an engaging portion that can be engaged with the stopper is provided on the other. In the above configuration, when the support member 41 is inserted into the inner peripheral surface of the device mounting portion 57 from the negative side (lower side) in the Z direction and the first portion 42 and the device mounting portion 57 are fitted, the stopper is engaged. engage the joint. The support member 41 is attached to the tray 50 by engaging the stopper with the engaging portion. Stoppers and engagement portions are examples of fasteners 90 . In the above configuration, providing the second portion 43 on the support member 41 is not essential. For example, a configuration in which one of the stopper and the engaging portion is provided on the second portion 43 and the other is provided on the saucer bottom portion 51 may be employed.

As can be understood from the above description, if the support member 41 can be detachably attached to the tray 50 from the opposite side of the device mounting portion 57 by the fixing tool 90, a method for attaching the support member 41 to the tray 50 or The configuration is arbitrary. Similarly, the configuration of the fixture 90 may be changed as appropriate.

(3) In the above embodiment, the protrusion 46 of the first portion 42 and the device mounting portion 57 are formed of an elastic material. If possible, it is not essential to form both the protrusion 46 of the first portion 42 and the device mounting portion 57 from an elastic material. Similarly, providing the protrusion 46 on the first portion 42 is not essential. All or part of the outer peripheral surface of the first portion 42 may be formed of an elastic material.

(4) In the above embodiment, the device mounting portion 57 includes the first mounting portion 571 and the second mounting portion 572 . Optional if possible. For example, a device mounting portion 57 whose inner diameter is constant over the height direction, or a device mounting portion 57 whose inner diameter continuously decreases toward the positive side in the Z direction may be employed.

(5) In the above embodiment, the air conditioner A may be washed manually by inserting a hand gun for manual washing from the mounting hole 56 without attaching the fluid injection nozzle device 40 to the tray 50 . That is, the saucer 50 can also be used as a protective cover for hand washing.

40 : Fluid injection nozzle device 41 : Support member 42 : First portion 43 : Second portion 46 : Protruding portion 47 : Support plate 50 : Receptacle 51 : Receptacle bottom 53 : Case contact portion 55 : Discharge port 56 : Mounting hole 57: Apparatus mounting portion 90: Fastener 91: Screw member 92: Fastener 100: Cleaning device 211: First hole 212: Second hole 421: Through hole 511: Installation surface 52: Peripheral wall 571: First mounting Part 572: Second mounting part A: Air conditioner B: Housing C: Heat exchanger D: Blower F: Lid member G: Air inlet H: Air outlet J: Stay bolt M: Installation section N1: First nozzle N2: Second nozzle T1: supply pipe T2: supply pipe U: shaft member

Claims (9)

A cleaning device for cleaning a ceiling-embedded air conditioner having a cylindrical housing and a heat exchanger arranged inside the housing,
a saucer for closing the lower part of the housing;
a fluid injection nozzle device that is detachably attached to the tray, including a nozzle portion that injects liquid and a support member that supports the nozzle portion;
The saucer is formed in a box shape with an open top,
a saucer bottom;
an outer peripheral wall rising upward from the outer periphery of the saucer bottom;
a mounting hole provided in the bottom of the saucer for mounting the fluid injection nozzle device;
a discharge port provided at the bottom of the saucer for discharging waste liquid of the cleaning liquid;
a device mounting portion that rises upward along the entire periphery of the mounting hole;
The support member includes a first portion fitted to the inner peripheral surface of the device mounting portion,
The cleaning device, wherein the support member of the fluid injection nozzle device is detachably attached to the receiving tray from a side opposite to the device attachment portion by a fixture. The device mounting portion includes a first mounting portion and a second mounting portion located above the first mounting portion and having an inner diameter smaller than that of the first mounting portion,
The cleaning device according to claim 1, wherein the first portion is fitted to the inner peripheral surface of the second attachment portion. 3. The cleaning device according to claim 1, wherein an inner peripheral surface of said device mounting portion is made of an elastic material. 4. The cleaning device according to any one of claims 1 to 3, wherein the outer peripheral surface of the first portion includes projections provided over the entire circumference in the circumferential direction. 5. The cleaning device according to claim 4, wherein the protrusion is made of an elastic material. The support member is a portion that protrudes from the lower end of the first portion and is a second portion that abuts around the mounting hole on the surface of the saucer bottom opposite to the device mounting portion. including
6. The cleaning device according to any one of claims 1 to 5, wherein the second portion of the support member is detachably attached to the bottom of the tray. The fastener is
a screw member whose tip side is fixed to the bottom of the saucer and extends downward from the surface of the bottom of the saucer opposite to the device mounting portion;
A threaded hole is formed to be screwed to the threaded member, and includes a fastener that can be fastened with the threaded member,
A through hole through which the screw member can be inserted is formed in the second portion,
With the screw member in the through-hole, the fastener is fastened to the screw member so that the second portion abuts against the periphery, whereby the second portion is attached to and detached from the saucer by the fastener. 7. The cleaning device of claim 6, removably mounted. The through hole includes a first hole and a second hole continuously positioned along the circumferential direction of the mounting hole,
The first hole is formed to have a size through which the fastener can be inserted,
the second hole is formed to have a size through which the screw member can be inserted and through which the fastener cannot be inserted;
With the screw member in the second hole, by fastening the fastener to the screw member so that the second portion abuts against the periphery, the second portion is secured to the receiving pan by the fastener. 8. The cleaning device of claim 7, removably attached to. 9. The cleaning apparatus of claim 8, wherein the method of attaching the second portion to the pan, comprising:
The fastener is inserted into the first hole in a state where the fastener is located at a position where the length of the section between the fastener and the bottom of the saucer in the screw member exceeds the thickness of the second portion. and move the support member upward so that the section is positioned in the first hole,
rotating the support member along the circumferential direction so that the section is positioned within the second hole;
By fastening the fastener to the screw member so that the second portion abuts against the periphery in a state where the section is in the second hole, the second portion is attached to the saucer by the fastener. Attach detachably Attachment method.

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