JP2884505B2 - Cleaning device for heat exchanger of ceiling mounted 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 cleaning device for a heat exchanger of a ceiling-mounted air conditioner.

[0002]

2. Description of the Related Art Conventionally, as a cleaning device for a heat exchanger of a ceiling-mounted air conditioner, as shown in FIG. 21, a vinyl cover a is provided on the lower surface of a housing X containing a finned heat exchanger. The cleaning liquid jet nozzle c is inserted from the insertion hole b provided in the vinyl cover a, and the cleaning liquid is sprayed onto the heat exchanger while manually operating the cleaning liquid jet nozzle c to clean the heat exchanger. Things are known. still,
Reference numeral d denotes a drain pipe for guiding drainage collected in the vinyl cover a to a receiver e such as a bucket, f denotes a cleaning liquid tank, and g denotes a pump for pumping up the cleaning liquid from the cleaning liquid tank f and supplying it to the cleaning liquid ejection nozzle c. In addition, 3-102289
Japanese Patent Application Laid-Open Publication No. H10-15095 discloses a method in which a hood is attached to a ceiling surface and a nozzle is inserted through a relatively large window provided in the hood (first embodiment), and a nozzle in which the nozzle is fixed in a hood supported by a relatively large window (Second embodiment) is known.

[0003]

However, the former method is for cleaning the heat exchanger while manually operating the cleaning liquid jet nozzle c, so that it is difficult to uniformly clean the finned heat exchanger. Moreover, easily with the vinyl cover a,
Since it only covers the lower surface of the housing A containing the finned heat exchanger, it is inevitable that the washing liquid scatters around,
For this reason, prior to the cleaning operation, after removing an item under the place where the air conditioner is installed, there is a problem that time is required for preparations prior to the cleaning such as laying a waterproof sheet h on the part. is there. In the latter first embodiment,
Washing the heat exchanger while manually operating the nozzle, it is difficult to wash the finned heat exchanger uniformly,
In addition, the relatively large windows inevitably cause the cleaning liquid to splash out of the windows. Therefore, prior to the cleaning operation, after removing the items under the location where the air conditioner is installed, the cleaning liquid is removed. There is the same problem as the former, which takes time to prepare before washing such as laying a waterproof sheet on the part. Further, in the latter second embodiment, there is no specific description on how to clean the heat exchanger, but since there is a relatively large window, it is inevitable that the cleaning liquid scatters from this window as well. Prior to cleaning work, after removing the items under the place where the air conditioner is installed, the same trouble as the former, which takes time to prepare before cleaning such as laying a waterproof sheet on the part. There is. In addition, as this kind of washing device, finned heat exchanger
A nozzle and a rotary drive
For mounting a moving motor (actually open square 2-10)
No. 0091) or an air conditioner fan
A nozzle is attached using a driving motor, and
It is also known that the chisel is driven by the motor.
(Japanese Patent Application Laid-Open No. 8-178590). But these
The motor is located at a position where the cleaning liquid etc.
If you have to use a fully waterproof motor and the equipment is expensive
Become. In particular, cleaning liquid etc. is blown into the finned heat exchanger at high pressure.
The cleaning solution is scattered as droplets
Easily penetrates into the motor through the gap. An object of the present invention is to obtain a cleaning device free of such a problem.

[0004]

In order to achieve the above object, the present invention provides a cleaning apparatus according to the first aspect, wherein a heat exchanger with fins is disposed in a substantially annular shape in a housing having a lower surface opened. A saucer that covers the lower part of the housing of the air conditioner,
Mounting means for mounting a tray on the lower end of the housing in close contact, a driving device supported on the lower surface of the tray, and a vertical movement and a rotation on a vertical axis by the driving device. Cleaning fluid, air and other fluids are sprayed from the fluid jet nozzle toward the finned heat exchanger, and the fluid is provided at the center of the tray.
Supply of cleaning liquid, air and other fluids to the injection nozzle
The tube and the rack that moves the fluid injection nozzle up and down
The fluid injection nozzle is provided on the upper surface of the through hole.
It features a rotating lid on the body .

[0005] According to a second aspect of the present invention, there is provided a cleaning device for a ceiling-mounted air conditioner, wherein a heat exchanger with fins is provided at least along a longitudinal direction of the casing in a longitudinal casing having an open lower surface. A pan that covers the bottom of the case, an installation means that can be placed in close contact with the bottom of the housing, a driving device supported on the lower surface of the pan, and a vertical movement by the driving device and a longitudinal direction of the housing. A fluid ejecting nozzle facing the moving receiving pan, and a cleaning liquid
The air or other fluid towards the heat exchanger finned as blowing, the saucer, the cleaning liquid-to the fluid injection nozzle
Supply pipe for supplying air and other fluids and the fluid ejection nozzle
In the longitudinal direction.
With a through hole along it, moving along the longitudinal direction of the housing
A moving table supporting the fluid ejection nozzle;
Bellows extending between the front and rear of the pan and the end of the pan to cover the through hole
Is provided .

According to a third aspect of the present invention, the lower surface is released.
Ceiling mounting with heat exchangers with fins arranged in a substantially annular shape inside the housing
A pan that covers the lower part of the housing of the air conditioner
Installation means that can be installed with the saucer in close contact with the lower end of the housing;
Vertically moved by a driving device attached to the lower surface of the pan
Fluid ejected on the pan rotating about a vertical axis
Nozzle, and the cleaning liquid / air
Other fluid into the finned heat exchanger
The heat exchanger of the ceiling-mounted air conditioner
In the device, a button is inserted between the inner race and the outer race.
Between the two ball bearings
Each outer race side is supported on the lower surface of the pan with a gap.
And the inner bearing of the ball bearing
The fluid ejection nozzle around a vertical axis.
Move the rotating motor to rotate and the fluid ejection nozzle up and down
Provide a motor for vertical movement, and
An internal toothed wheel is fixed to the lower surface of the outer race, and
The gears on the rotating motor shaft are meshed with each other,
It is supported by a rack rod that moves up and down in conjunction with the motor for lowering.
The fluid jet nozzle faces the pan .

[0007]

According to a fifth aspect of the present invention, in the cleaning apparatus of the second aspect, the cleaning device is provided with a housing in cooperation with the driving device.
Front and back and left of the moving direction of the carriage that moves along the longitudinal direction
The fluid ejection nozzles are provided on the right, respectively, in front of the movement direction.
The fluid ejection nozzle provided later has a heat exchange nozzle.
When approaching the inside of the heat exchanger, the cleaning liquid
It is characterized by injecting air and other fluids
I do .

[0009]

[0010]

In the cleaning apparatus according to the first aspect of the present invention, prior to cleaning, the receiving tray is closely attached to the lower surface of the housing by the installation means. In this state, the cleaning device, air or other fluid is sprayed from the fluid injection nozzle toward the finned heat exchanger while the fluid injection nozzle is moved up and down by the driving device and rotated about the vertical axis. A series of operations such as washing and drying can be performed on the finned heat exchanger. In addition, the cleaning liquid / air
Supply pipe for supplying other fluid, and the fluid ejection nozzle
The rack to be moved down is exposed on the tray through the through hole
be able to. Moreover, cover the through-hole with a lid and wash from the through-hole.
Leakage of the purified liquid and the like can be prevented.

[0011] In the cleaning apparatus according to the second aspect of the present invention, prior to cleaning, the receiving tray is closely attached to the lower surface of the housing by the installation means. In this state, the cleaning device, air and other fluid are sprayed from the fluid ejection nozzle toward the finned heat exchanger while the fluid ejection nozzle is moved up and down by the driving device and moved along the longitudinal direction of the housing.
A series of operations such as washing and drying can be performed on the heat exchanger with long fins. The bellows are extended by the movement of the carriage.
Shrink and cover the through-hole without hindering the movement of the carriage.
Can be.

[0013] In the cleaning apparatus according to the third aspect having the above-described structure, the fluid ejecting nozzle is moved up and down and the vertical axis is set at the center.
The drive that rotates to the center projects greatly from the bottom of the pan
It is attached so that it does not do.

[0013]

In the cleaning apparatus according to the fifth aspect, the cleaning liquid / empty liquid ejected from the fluid ejecting nozzle is provided.
Cleaning process without wasting gas and other fluids.
Can be.

[0015]

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the embodiments shown in FIGS. In FIG. 1, A indicates a ceiling-mounted air conditioner, and the air conditioner A
Is provided with a ring-shaped or substantially ring-shaped heat exchanger C as shown in FIG. 2 in a housing B having a lower surface opened, and a blower D in a central space of the heat exchanger C with fins; The housing B is provided with a detachable lid member F which is in close contact with a packing E (shown in FIG. 5) on the lower surface. The lid member F has an intake port G at the center and outlet ports H at four locations around the lid. J indicates a stay bolt for suspending the housing B on the slab. This device is
Such a finned heat exchanger C of the air conditioner A
For cleaning. The cleaning is performed after removing the lid member F and the blower D prior to the cleaning. This apparatus comprises a receiving tray 2 which can be closely attached to a lower part of a housing B of the air conditioner A by an installation means 1, and a vertically and rotationally moving fluid jet nozzle 3 facing the receiving tray 2.
The fluid ejected from the fluid ejection nozzle 3 is sprayed onto the finned heat exchanger C, and the finned heat exchanger C
Is to wash. To explain this further, saucer 2
As shown in FIGS. 3 to 5, is formed in a disc shape with a transparent material such as a synthetic resin, and has a through hole 2a in the center of the receiving tray 2, and an upright stand is formed around the through hole 2a. Rising rising wall 2b
And a cover 2c for covering the through-hole 2a from its upper surface.
Is provided. Reference numeral 2d denotes a discharge port of the cleaning liquid provided in the tray 2.

The fluid injection nozzle 3 includes a cleaning liquid injection nozzle 3
a and the air blowing nozzle 3b, and the injection nozzle 3a
Through the through hole 2a, above the support rod 4 (shown in FIG. 6) facing the upper part of the tray 2 from below the tray 2, and supporting the injection nozzle 3b similarly to the upper part of the tray 2 5, the cleaning liquid and the air are laterally attached to the heat exchanger C with fins from the injection nozzles 3a and 3b, and the support rods 4 and 5 are made of aluminum or other metal pipes. The inside of the pipe was used as a fluid passage. The two injection nozzles 3a were vertically displaced from each other, and the air blowing nozzle 3b was mounted so as to face an intermediate height between the injection nozzles 3a.

Reference numeral 7 denotes a driving device for vertically moving the injection nozzles 3a, 3a, 3b and rotating them about a vertical axis. The driving device 7 rotates the injection nozzles 3a, 3a, 3b about a vertical axis. Drive unit 8 to be driven, and injection nozzles 3a, 3
a, 3b. The rotation drive unit 8 includes a pair of upper and lower ball bearings 8a, 8a provided at intervals on the lower surface of the tray 2, and an internal gear mounted on the lower surface of the outer race 8a-1 of the lower ball bearing 8a. 8b, a motor 8c provided between the upper and lower ball bearings 8a, 8a supported by the inner race 8a-2 of the lower ball bearing 8a, and a rotating shaft of the motor 8c meshing with the internal gear 8b. The upper and lower outer races 8a-1 are connected to the tray 2 by three connecting rods 8e, and the upper and lower inner races 8a-2 are connected to each other by a connecting rod 8f. In addition, ball bearing 8a
Has a watertight structure.

The drive unit 9 for raising and lowering comprises a rack rod 9a connected to the supporting rods 4 and 5, and a motor 9b for raising and lowering the rack rod 9a. The motor 9b is provided for the lower ball bearing 8a. Upper and lower ball bearings 8a, 8a supported by a support member provided on the inner race 8a-2.
It was provided in between. The connection between the support rods 4 and 5 and the rack rod 9a is performed via upper and lower connecting pieces 9a-1 and 9a-2, and the supporting rod 4 is connected to the upper and lower connecting pieces 9a-1 and 9a-2. 9a-2 is slidably mounted on a spring 6 provided on an upper connecting piece 9a-1, and is mounted. The support rod 5 is attached to the upper and lower connecting pieces 9a-1 and 9a-2. It was fixed and attached. LM1
Is a limit switch for detecting the upper limit position of the injection nozzles 3a and 3b, LM2 is a limit switch for detecting the lower limit position of the injection nozzles 3a and 3b, and both limit switches LM1 and LM2 are as shown in FIG. Is provided in the vicinity of the lower connecting piece 9a-2. To explain this, the limit switch LM1 is attached to a side extending below the angle member 10 attached to the lower surface of the lower connecting piece 9a-2, and the limit switch LM2 is supported by the inner race 8a-2. It is provided on the side surface of the fixed rod 11 protruding below the internal gear 8b along the support rods 4 and 5. Incidentally, the upper surface of the limit switch LM1 is, 13a in the nut to the support rod 5, 1
The pressing piece 13 tightened and fixed at 3a is exposed, and one end of the angle member 10 supported by the connecting piece 9a-2 to which the limit switch LM1 is attached is exposed on the upper surface of the limit switch LM2. In this case, the injection nozzles 3a and 3b are moved upward by the rack rod 9a, and the rack rod 9a is further moved upward while the upper end of the nozzle 3a provided on the support rod 4 is in contact with the ceiling surface of the housing B. Then, the support rod 4 is prevented from moving upward and does not move upward any further, but the rack rod 9a further moves upward while compressing the spring 6. For this reason, the strip 9a-
2 also moves upward, and accordingly, the limit switch LM1 also moves upward and is pushed by the pressing piece 13. Note that a bellows 1 covering the outer periphery of the rack rod 9b projecting above the lid 2c is provided.
2, so that the cleaning liquid and the like do not enter the motor 9b side along the rack rod 9b.

The mounting means 1 includes at least the left and right 2
String-like bodies 1a attached to more than two places, hooks 1b attached to each string-like body 1a, and string-like bodies 1a fixed to the tray 2
And a fastening fixture 1c for inserting and fixing the free end of the wire.
To explain this further, as shown in FIG.
a is composed of a flat and strong belt-like body, and the fastening fixture 1c is
A band 1e is attached to a fixture 1d attached to the four corners of the lower surface of the saucer 2.
Mounted via Each fastening fixture 1c includes a pin 1f and a fastening piece 1h which is repelled by a spring 1g on a side that comes into pressure contact with the pin 1f, and has a cord-like shape at an interval between the pin 1f and the fastening piece 1h. By inserting the free end of the body 1a, the string-like body 1a
Is fixed to the fastening fixture 1c. A surface of the fastening fixture 1c facing the pin 1f is provided with a saw blade that allows the movement of the cord 1a in only one direction (fastening direction).
Then, the fastening fixture 1c is mounted on the pin 1 against the spring 1g.
f when the opposing surface of the fastening piece 1h is retracted from
You can move freely. As shown in FIG. 5, installation of the tray 2 on the housing B by the installation means 1 is performed by hooking the hook 1b on the stay bolt J and pulling the root of each string-like body 1a inserted through the fastening fixture 1c. , Saucer 2 rises gradually,
The upper surface of the tray 2 is installed in a state in which it is in close contact with a packing E (a packing that comes into contact with the lid member F) provided around the housing B. To release this, the fastening piece 1h may be switched to the unwinding position. The mounting means 1 is not limited to the above-described embodiment, and although not shown, an air lift device is attached below the pan 2, and the pan 2 is
, And the tray 2 can be closely attached to the lower surface of the housing B.

In FIG. 3, reference numeral 14 denotes a truck,
Includes a pump WP for supplying high-pressure water to the injection nozzles 3a, 3a, an air compressor AC for supplying compressed air to the injection nozzle 3b, a fan motor for dryer FM, a heater HE for dryer, and a steam generator. S
T, the solenoid valve SV1 intervening in the water supply passage to the pump WP,
Solenoid valves SV2, SV3, SV4 provided in a supply passage for supplying high-pressure water to the cleaning liquid injection nozzle, and solenoid valves SV5, SV6 provided in a supply passage for supplying air to the air blowing nozzle 3b.
(In FIG. 3, the cart 14 is drawn with a larger reduction ratio than that of the tray 2). 14A is an electrical box provided on the cart 14, and 14B is an intake for taking in cool air into the cart 14. The solenoid valves SV3, SV4 and SV6
Is used only in the embodiment shown in FIGS. 12 and 13 described later.

The electric circuits shown in FIGS. 9 to 11 can be shared by the embodiment shown in FIGS. 1 to 8 and the later-described embodiments shown in FIGS. Hereinafter, the electric circuit will be described. FIG. 9 shows an operation circuit of a motor 9b for moving the injection nozzles 3a and 3b up and down. To explain this, the operation circuit includes a switch S which is turned on / off by a command signal.
W1 and a switching contact 52x1 of an auxiliary relay 52X1. The auxiliary relay 52X1 is a return type limit switch LM1 that closes when the injection nozzles 3a and 3b are at the upper limit position, and the injection nozzles 3a and 3b are at the lower limit position. Is connected to a power source via the return type limit switch LM2 which is opened when the switch comes. The limit switch LM1 is connected in parallel with the self-holding contact 52x1 of the auxiliary relay 52X1.
−1 was intervened. Thus, when the injection nozzle 3a is moved to the upper limit position and the limit switch LM1 is closed,
The auxiliary relay 52X1 is excited, and its contact 52x1 is switched to the reverse contact. For this reason, the injection nozzles 3a, 3b
Goes down. When the injection nozzles 3a and 3b move to the lower limit position and momentarily open the limit switch LM2, the auxiliary relay 52X1 is de-energized, and the contact 52x1 is connected to the forward rotation circuit. Therefore, the injection nozzles 3a and 3b rise. By repeating this, the injection nozzles 3a and 3b repeatedly move up and down.

FIG. 10 shows an operation circuit of the motor 8c. Explaining this, the operation circuit includes a switching circuit CT1 for rotating the motor 8c in the normal and reverse directions in the embodiment shown in FIGS. 1 to 8, and a motor 8c of the embodiment shown in FIGS. , Switching circuit C for reversing forward and reverse
T2. The switching circuit CT1 and the switching circuit CT2
Is switched by the changeover switch SW2. And
The switching circuit CT1 has a switch SW3 and a switching contact 61g of an alternate relay 61G, and the switching circuit CT2 has a switch S3.
A switching contact 52x2 for W4 and an auxiliary relay 52X2 is provided. The alternate relay 61G is connected to a power supply via a reversing limit switch LMS3 and a switch SW5 in parallel with the reversing limit switch LMS3. When the switch SW5 is operated or when the reversing limit switch LMS3 is closed, the switching contact 61g is generated by the signal. Is switched. That is, each time the reversing limit switch LMS3 is closed, the rotation direction of the motor 8c is reversed alternately. The auxiliary relay 52X2 is connected to a power supply via a normally open type right limit switch LMS4 and a normally closed type left limit switch LMS5, and further has a self-holding auxiliary relay 52X2 in parallel with the right limit switch LMS4. When the right limit switch LMS4 is closed, the auxiliary relay 52X2 is provided.
Is excited to switch its contact 52x2-1 to the forward rotation side, and move the injection nozzles 3a and 3b to the right. When the MIT switch LMS5 is closed at the right end position, the auxiliary relay 52X is closed.
2 is released, the contact point 52x2-1 is switched to the reverse rotation side, and the injection nozzles 3a and 3b are moved to the left. In FIGS. 9 and 10, AD is a converter for converting AC to DC, T
G indicates a tacho generator, and VR indicates a variable resistor for speed adjustment.

FIG. 11 shows a sequence circuit, in which 52W is a relay in which the contact 52w-1 is interposed in the operation circuit of the pump WP, 52A is a relay in which the contact 52a is interposed in the operation circuit of the air compressor AC, 52F is a relay in which the contact 52f is interposed in the operation circuit of the dryer fan motor FM, 52H is a relay in which the contact 52h is interposed in the operation circuit of the heater HE for the dryer, and 52ST is a contact 52st in the operation circuit of the steam generator ST. The relay 52W and the solenoid valve SV1 are connected to the switch SW6, the b contact 52a-1 of the relay 52A and the pump WP.
Contact 5 of the overcurrent relay 51W interposed in the operation circuit of FIG.
Connected to the power supply via 1w. The solenoid valve SV2 is connected to a power source via a switch SW7 and a contact 52w-2 of a relay 52W, and the solenoid valve SV3 is connected to a switch SW8 and a relay 5W.
The solenoid valve SV4 is connected to a power supply through a 2W a contact 52w-3, and the solenoid valve SV4 is connected to the switch SW9 and the a contact 52w of the relay 52W.
-4 is connected to the power supply, and the relay 52A is connected to the switch S
It is connected to a power source via W10, a contact 52w-5 of a relay 52W, a pressure switch PS which opens at a certain pressure or higher, and an air compressor relay 51a. Also, the solenoid valve SV5
Is the switch SW11 and the a contact 52x of the auxiliary relay 52X1.
The solenoid valve SV6 is connected to the power supply via the switch SW11 and the normally open contact 52x1-2 of the auxiliary relay 52X1. 52F is a normally open push button switch PBS3 and a normally closed push button switch PB.
S4 and a normally-closed inter-thermo switch 49f, which are connected to a power source, and a normally-open type push-button switch PBS3
Is provided with a self-holding contact 52f of a relay 52F in parallel with this. The relay 52H is connected to a power source via a switch SW14, a contact 52f of the relay 52F, and a bimetal switch 26h.
Connected to power supply via 15. The switch SW1
The switches SW15 to SW15 are appropriately switched by a command signal from a control unit housed in the electrical box 9A.

Next, the operation of the embodiment shown in FIGS. 1 to 8 will be described. With the command signal from the control unit, the switch S
When W2 is switched to the circuit CT1 side and the switches SW1, SW3, SW6 and SW7 are closed, the solenoid valves SV1 and SV2 are opened and the pump WP operates. At the same time, the motors 8c and 9b operate. For this reason, the injection nozzles 3a, 3a rotate forward very slowly (for example, one rotation every 15 minutes). During this time, the injection nozzles 3a, 3a repeatedly move up and down while maintaining 60 kg / cm ^2-
The cleaning liquid pressurized to 70 kg / cm ^{2 is applied} to the spray nozzle 3.
a and 3a are sprayed to each part of the finned heat exchanger C to wash away dust and the like adhering to each part of the finned heat exchanger C. Then, when the injection nozzles 3a, 3a make one rotation, the limit switch LMS3 is closed. Then, since the reverse rotation circuit of the motor 8c is selected, the rotation of the motor 8c is reversed, and the flushing is continued while rotating the injection nozzles 3a, 3a in the reverse direction. By repeating this, cleaning is performed by uniformly spraying the cleaning liquid on each part of the heat exchanger C with fins.

When the switches SW6 and SW7 are opened by a command signal, the injection of the cleaning liquid from the injection nozzles 3a and 3a is stopped. When the switch SW15 is closed by a command signal, the steam generator ST is activated to activate the air. Steam is blown from the blowing nozzle 3b to the finned heat exchanger C to remove mold odor attached to each part of the finned heat exchanger C and remove the bad smell attached to the finned heat exchanger C. During this time, the injection nozzles 3a, 3a, 3b continue to move up and down and rotate around the vertical axis, as described above. Then, switch SW15
Is opened, the injection of steam from the injection nozzle 3b is stopped. Then, switch SW10 and SW11 are closed by the command signal. Then, the air compressor AC operates. Only when the limit switch LM1 is closed and the contact 52x1 of the auxiliary relay 52X1 is closed, that is, only when the injection nozzle 3b moves down, the solenoid valve SV5 is opened, and the dry air from the air blowing nozzle 3b is subjected to heat exchange with fins. The finned heat exchanger C is drained by spraying it onto the vessel C (the injection nozzles 3a, 3a, and 3b continue to move up and down and rotate as described above). Then, the switches SW1, SW3, SW10 and S
When W11 is opened and the switch SW14 is closed, the blowing of the dry air from the air blowing nozzle 3b stops, and the vertical movement and the rotational movement of the spray nozzles 3a, 3a, 3b also stop. Then, the heater HE for the dryer is energized. Then, when the push button switch PBS3 is manually pressed, the dryer fan motor FM is operated to blow hot air into the space formed between the tray 2 and the housing B to dry the inner surface of the housing B and the finned heat exchanger C. Let it. Push button switch P for a certain time
When BS4 is pressed, energization of the heater HE for the dryer and the fan motor FM for the dryer is stopped, and all operations are completed.

FIGS. 12 and 13 show another embodiment. This is a ceiling-mounted air conditioner A in which a heat exchanger C with fins is provided on both sides thereof along the longitudinal direction of the casing B in a longitudinal casing B having a lower surface opened, or a casing B Case B of a ceiling-mounted air conditioner A provided with finned heat exchangers C on both sides along the longitudinal direction and on both ends thereof
The receiving pan 2 covering the lower part of the housing B can be placed in close contact with the lower end of the housing B by the mounting means 1, and
The drive unit 7 faces the fluid injection nozzle 3 that moves up and down and moves along the longitudinal direction of the housing, and the cleaning liquid, air, and other fluids are sprayed from the fluid injection nozzle 3 toward the finned heat exchanger C. An example is shown below.

To explain this, the tray 2 is formed in a rectangular shape with a transparent material such as a synthetic resin, and a guide rod 15 is provided along one longitudinal side of the upper surface of the tray 2. A screw rod 16 is provided along the other side of the upper surface in the longitudinal direction.
5, a moving table 17 is provided by being screwed with the screw rod 16, the fluid table is supported by the moving table 17, and the screw rod 15 is rotated in conjunction with the motor 8c to rotate the screw rod 15. The moving table 17, that is, the fluid ejection nozzle 3 supported by the moving table 17 is moved in the longitudinal direction of the tray 2. The injection nozzle 3 penetrates a long hole 18 formed along the longitudinal direction of the tray 2 and the moving table 17, and
And four on each surface of the upper part of the metal square tube 19 whose upper end faces upward. Then, the rack 20 attached to the side surface of the rectangular tube 19 is connected to the motor 9 b attached to the lower surface of the pan 2.
By moving the square cylinder 19 up and down by meshing with
The injection nozzle 3 was moved up and down. In addition, square tube 1
9. If a bellows is provided to cover each of the racks 20, leakage of the washing liquid from the tray 2 can be more completely prevented. In addition, the nozzle 3
The cleaning liquid spray nozzle 3a and the air blowing nozzle 3b are prepared as in the above-described embodiment, and the cleaning liquid is sprayed from the cleaning liquid spray nozzle 3a to the finned heat exchanger C to perform cleaning, and then the air blowing nozzle is provided. There is no difference from the above embodiment in that steam is blown out from the air blower 3b to remove a bad smell, then air is blown out from the air blowing nozzle 3b to drain the water, and then hot air is supplied into the housing B and dried.

The operation of this embodiment is performed by selecting the switching circuit CT2 of the motor 8c with the switch SW2 described above.
This is performed by closing the switch SW4 and sequentially opening and closing the switches in the same manner as described above. In this case, the finned heat exchangers C are provided only on both sides along the longitudinal direction of the housing B, and the finned heat exchangers C are provided on both sides and both ends of the housing B along the longitudinal direction. There are some differences in the operation. To explain this, when the finned heat exchanger C is provided only on both sides along the longitudinal direction of the housing B, when the cleaning liquid is sprayed on the finned heat exchanger C, the switch SW6 When the switch SW7 is closed, each solenoid valve S
V1 and the solenoid valve SV2 open, the pump WP operates and the housing B
It is sufficient to jet the cleaning liquid only from the injection nozzles 3a and 3a facing the finned heat exchangers C on both sides along the longitudinal direction of FIG.

On the other hand, if there are finned heat exchangers C on both sides along the longitudinal direction of the housing B and on both ends thereof, the injection nozzles facing the finned heat exchangers C on both ends are additionally provided. When the heat exchangers 3a and 3a approach the finned heat exchangers C at both ends, it is necessary to jet the cleaning liquid from the jet nozzles 3a and 3a. Therefore, when the carriage 17 approaches the right end of the housing B, the switch SW8 shown in FIG. 11 is closed and the solenoid valve SV3 is opened, and when the carriage 17 approaches the left end of the housing B, the switch SW9 shown in FIG. Is closed, the solenoid valve SV4 is opened, and the cleaning liquid is sprayed on the finned heat exchangers C at both ends.

When air is blown to the finned heat exchanger C to drain the water, and when the finned heat exchanger C is provided only on both sides along the longitudinal direction of the housing B, the switch SW10 is used.
And the switch SW11 are closed to operate the air compressor AC and the limit switch LM in the same manner as in the previous embodiment.
1 is closed and the solenoid valve SV5 is opened only when the contact 52x1 of the auxiliary relay 52X1 is closed, that is, only when the injection nozzle 3b moves down, so that only the both sides along the longitudinal direction of the housing B have heat exchange with fins. It is enough to drain the container C. On the other hand, when there are finned heat exchangers C on both sides along the longitudinal direction of the housing B and on both ends thereof, the injection nozzles 3b, 3b provided on both ends are additionally provided with finned heat exchangers on both ends. When approaching the heat exchanger C, it is necessary to drain water by injecting air from the injection nozzles 3b, 3b facing the heat exchanger C with fins at both ends. For this reason, only when the movable base 16 approaches the right end or the left end of the housing B and the injection nozzle 3b moves down, the switch SW12 shown in FIG. 11 is closed and the solenoid valve SV6 is opened to release air from the fins at both ends. Exchanger C
Spray on

In this embodiment, an erect wall 18a is provided around the elongate hole 18, and the elongate hole 18a is provided between each end of the moving table 17 and each end of the erect wall 18a. A bellows 21 for covering the upper surface was attached to prevent the washing liquid and the like from flowing out of the long hole 18.

Reference numeral 22 denotes a drain hole provided in the pan 2, 23
Denotes a supply port for supplying hot air between the tray 2 and the housing B. In addition, the installation means 1 is the same as the above-described embodiment, and the installation means 1 is provided with four cords 1a each having a root fixed to the tray 2;
A hook 1b movably attached to each cord 1a and a fixture 1c for fixing the free end of each cord 1a to the root side of each cord 1a. However, it goes without saying that the installation means 1 is not limited to this. In any of the above-described embodiments, after the cleaning liquid is sprayed from the cleaning liquid injection nozzle 3a to the finned heat exchanger C to perform cleaning, the air is blown out from the air blowing nozzle 3b to remove odor, and then the air blowing nozzle is cleaned. Air is blown out from the air blower 3b to drain the water, and then hot air is supplied into the housing B to be dried.
In some cases, the operation of removing the bad smell by ejecting steam from the air may be omitted, or the case B may not be required to be dried by hot air. Therefore, the steam generator ST and the dryer fan motor F
M and the heater HE for the dryer may not necessarily be provided permanently, but may be attached as needed.

FIGS. 14 to 20 show still another embodiment. To explain this, in this embodiment, the tray 2 made of a transparent material such as a synthetic resin faces the drive unit 7 and the tray 2 which is vertically moved and rotated about a vertical axis by the drive unit 7. Fluid injection nozzles 3a, 3
(b) and an outer peripheral portion 2B which is attached to the central portion 2A so as to be freely replaceable. To explain this further, the central portion 2A has a through hole 2a at the center of the tray 2, and a rising wall 2b rising upward around the through hole 2a.
And a cover 2c that covers the through hole 2a from above. The outer peripheral portion 2B has a circular opening 2e at the center, an overlapping portion 2f partially overlapping the central portion 2A at the peripheral edge, and a rising wall 2g at the outer periphery. The shape of the outer periphery is circular, octagonal, deformed hexagonal, or any other cross-sectional shape of the heat exchanger C to be cleaned, and accordingly, a shape corresponding to the outer peripheral shape of the housing B corresponding thereto. I do. The central portion 2A and the outer peripheral portion 2B were tightened and fixed with a bolt and nut 2j with a packing 2h interposed between the overlapping portions 2f. Thus, by replacing only the outer peripheral portion 2B according to the shape of the heat exchanger C, it can be used for cleaning an air conditioner having heat exchangers of various shapes. In this embodiment, the fluid injection nozzle 3 is made up of a cleaning liquid injection nozzle 3a and an air blowing nozzle 3b.
And one for each. However, the cleaning liquid injection nozzle 3a
Can be provided side by side to improve the cleaning efficiency with the cleaning liquid. The supply of the cleaning liquid to the cleaning liquid injection nozzle 3a and the supply of air to the air blowing nozzle 3b are not shown, but are performed in the same manner as in the first embodiment.

A driving device 7 for vertically moving the injection nozzles 3a and 3b and rotating the injection nozzles 3a and 3b about a vertical axis is a driving unit 8 for rotating the injection nozzles 3a and 3b about a vertical axis.
And a drive unit 9 for moving the injection nozzles 3a and 3b up and down. The rotation drive unit 8 comprises a pair of upper and lower ball bearings 8 provided at intervals on the lower surface of the tray 2.
a, 8a, the internal gear 8b attached to the lower surface of the outer race 8a-1 of the lower ball bearing 8a, and the inner race 8a-2 of the lower ball bearing 8a, thereby supporting the upper and lower ball bearings 8a, 8a. An upper and lower outer race 8a composed of a motor 8c provided therebetween and a gear 8d on a rotating shaft of the motor 8c meshing with the internal gear 8b.
-1 is connected to the tray 2 by three connecting rods 8e, and the upper and lower inner races 8a-2 are connected to each other by the connecting rod 8f. However, in this embodiment, when the cleaning liquid injection nozzle 3a is moved down,
It was configured to swing downward from a horizontal state.

17A and 17B, the injection nozzle 3a is attached to a bracket 4a provided above the support rod 4 by a nozzle body 3a-1 having the injection nozzle 3a mounted at the tip thereof. The shaft is supported by a shaft 24 so as to be able to swing up and down, and the injection nozzle 3 of the nozzle body 3a-1 is
The nozzle body 3a-1 and the injection nozzle 3a at the tip of the nozzle body 3a-1 are kept horizontal by supporting the mounting side of the coil spring damper 25, and when the nozzle body 3a-1 moves downward, a protrusion protruding from the other end of the nozzle body 3a-1. When the piece 26 is brought into contact with a stopper 27 protruding from a support member provided on the inner race 8a-2, and the injection nozzle 3a is further moved downward in this state, the fluid injection nozzle 3a is opposed to the coil spring damper 25, Swinging downward from a horizontal state. Thereby, the lowering position is restricted by the bellows 12 and the like, and the disadvantage that it is difficult to spray the cleaning liquid to the lower position of the heat exchanger C can be easily eliminated. In this embodiment, the motor 8
An AC motor was used as c.

The drive unit 9 for raising and lowering is supported by the support rods 4,
5 and a motor 9b for raising and lowering the rack rod 9a. The motor 9b is supported by a support member provided on an inner race 8a-2 of the lower ball bearing 8a. Upper and lower ball bearings 8
What is provided between a and 8a is not particularly different from the previous embodiment. The support rod 4 provided with the injection nozzle 3a
A supporting rod 5 provided with an injection nozzle 3b;
is connected via upper and lower connecting pieces 9a-1 and 9a-2, and the supporting rods 4 and 5 are connected to the upper and lower connecting pieces 9a-1 and 9a.
a-2. The supporting rods 4 and 5 are formed of hollow pipes, and the injection nozzle 3 is formed through the pipes.
a, to supply a fluid to the injection nozzle 3b;
In addition, the bellows 12 that covers the outer periphery of the rack rod 9b protruding above the lid 2c is attached to prevent the cleaning liquid and the like from entering the motor 9b side along the rack rod 9b. It will not change. In this embodiment, a DC motor is used as the motor 9b.

The control of the motor 8c for rotation in this embodiment is performed by using the optical sensor EX2 for detecting the lowering position of the injection nozzle 3a provided below the tray 2, and the control of the motor 9b for raising and lowering is performed. , Injection nozzle 3a provided at the lower part of pan 2
The operation is performed by an optical sensor EX1 for detecting the downward movement position and a waterproof limit switch LMS6 provided at the upper end of the support rod 4. The operation will be described with reference to the circuit diagrams shown in FIGS. When the operation switch SW16 provided on the control terminal line 30a connected to the drive unit 30 of the motor 8c is closed, the motor 8c is driven to rotate the fluid ejection nozzle 3a in the direction of the arrow shown in FIG. When the optical sensor EX2 comes to a position facing the hole 29 by the rotation, a signal is obtained from the optical sensor EX2, the alternate relay 82X is operated by the signal, and the signal is provided on the control terminal line 30b connected to the drive unit 30. Contact 8
Close 2x. As a result, the rotation direction of the motor 8c is opposite to the direction of the arrow (hereinafter, referred to as inversion). Then, with the reversal, the fluid ejection nozzle 3a makes one rotation and again the optical sensor E
When X2 comes to a position facing the hole 29, the optical sensor EX1
, And the alternate relay 82X is operated by the signal to open the contact 82x provided on the control terminal line 30b connected to the drive unit 30. Therefore, the rotation direction of the motor 8c is changed again, and the fluid ejection nozzle 3a is rotated in the direction of the arrow shown in FIG. SW17 indicates a manual switch that is interposed in the alternate relay 82X that is closed when it is desired to change the rotation direction of the injection nozzle 3a halfway. The speed of the motor 8c can be adjusted by a speed adjusting unit 30c provided in the driving unit 30. During this rotation operation, the injection nozzles 3a and 3b are repeatedly moved up and down.
When the optical sensor EX1 faces the hole 28 provided in the rack rod 9a when the position a is at the lower position, a signal is obtained from the optical sensor EX1, and the relay 72X is excited by the signal. Then, the movable contact 72x1 of the relay 72X for switching the motor 9b is switched to the forward rotation circuit side of the motor 9b, and the self-holding contact 72x2 is closed to hold the relay 72X by itself. Therefore, the motor 9b rotates forward, moves the rack rod 9a, and moves the support rods 4, 5 upward. When the rack rod 9a rises to the upper end position and the limit switch LMS6 is opened, the relay 72
X demagnetizes. Therefore, the contact 72x1 is connected to the motor 9b.
To the reverse rotation circuit side. Therefore, the motor 9b rotates in the reverse direction, moves the rack rod 9a, and moves the support rods 4, 5 downward. When the projection 26 hits the stopper 27 during the downward movement, the fluid ejection nozzle 3a is pushed down against the coil spring damper 25. Therefore, the fluid ejection nozzle 3a swings downward from the horizontal state. When the support rod 4 reaches the lower position, the optical sensor EX1 switches the rack rod 9
A signal is again obtained from the optical sensor EX1 in opposition to the hole 28 provided in a, and the relay 72X is excited by the signal. Therefore, the contact is switched to the forward rotation circuit side of the motor 9b at the contact 72x1, and the self-holding contact contact 72x2 is closed to switch the relay 72b.
Let X self-hold. Therefore, the motor 9b rotates forward,
The support rods 4 and 5 are moved upward by the rack rod 9a. Then, at the beginning of the upward movement process, the fluid ejection nozzle 3a gradually returns to the horizontal direction from the state inclined downward, and moves upward while maintaining the state after the fluid ejection nozzle 3a returns to the horizontal direction. While repeating this, the fluid ejecting nozzle 3a rotates to perform the same series of cleaning operations as described above on the heat exchanger C in the same manner as in the above-described embodiment.

The hose can be attached to the support rod 4 or the support rod 5 easily and quickly by using the simple joint 31 shown in FIG. As shown by the solid line in the figure, when the operation piece 31a is tilted along the support rods 4, 5, the projection 31b provided at the tip of the operation piece 31a is provided on the support rods 4, 5. The hose is easily connected to the support rods 4 and 5 when the operation piece 31a is erected as shown by a chain line in the drawing. If a thin contact piece 32 is provided on the tray 2 opposite to the discharge port 2d and the tray 2 is brought into contact with the lower surface of the housing B, the discharge port 2d is lowered and the cleaning liquid discharge port 2d is provided. Easier to move.

[0040] Note that in FIG. 20, S, when carrying when or automobile or the like for accommodating the main cleaning apparatus, shows the support base for supporting the main cleaning apparatus, the support stand S is folded freely legs S1 Of a table having a receiving plate S2 provided with a hole S3 in the center of the receiving plate S2. The cleaning device is placed on the receiving plate S2 at the lower surface of the receiving tray 2. At this time, the drive device 7 and the like protruding below the tray 2 face the hole S3. Note, S4 is provided around the receiving plate S2, it indicates an annular storage box in which the upper surface and entrance, said storage box
In S4, the pump WP provided on the truck 14 and the injection nozzle 3
a, a hose connecting the air compressor AC provided on the carriage 14 and the injection nozzle 3a, a cord connecting the electrical box 14A and the limit switch, and the like are stored in the storage box S4. Each leg S1 is provided with a loop S5. A hook 1b attached to each of the strips 1a is hung on the loop S5, and the free end of each of the strips 1a is pulled. The main cleaning device can be fixed to the support base S by tightening with the tightening fixture 1c after tightening to the support S.

[0041]

According to the first aspect of the present invention, there is provided a cleaning apparatus for a heat exchanger of a ceiling-mounted air conditioner, wherein the heat exchanger is mounted on a lower surface of a housing accommodating the heat exchanger with fins.
Since the fluid ejecting nozzle that rotates up and down and rotates around the vertical axis by the driving device is exposed on the tray to be made, the fluid ejecting nozzle is operated evenly and uniformly as compared with the conventional manual operation of the fluid ejecting nozzle as in the conventional example. cleaning liquid to the heat exchanger C finned, air or other fluids sprayed to be able to perform uniform cleaning work, moreover, conventional as described, such as those operating the fluid injection nozzle manually, the operation it is not necessary to provide a large hole for, moreover, the cleaning liquid-fluid injection nozzle
A supply pipe for supplying air or other fluid;
And a rack for moving the rack up and down
I can do it. Moreover, the through-hole is covered with a lid, and the
The cleaning liquid can be prevented from leaking from the cleaning liquid, and the cleaning liquid does not scatter around the cleaning liquid.Therefore, prior to the cleaning work, it is possible to remove an article below the place where the air conditioner is installed, it is not necessary to prepare prior to the cleaning of such lay waterproof sheet portion, moreover for installation in a ceiling section member is supported all pan, simply mounting the pan to ceiling 据 with means, to the ceiling Installation can be completed, and the work time required for installation can be reduced. Moreover, since there is provided a driving device to the underside of the pan, the
It can be used safely without drive dynamic device such as wetted with the cleaning liquid.

The claims in the two-cleaning device of the ceiling-mounted air conditioner Desho toner of the heat exchanger according, adhesion installation of the lower surface of the housing accommodating the heat exchanger finned by mounting means
Since the fluid ejecting nozzle that moves up and down by the driving device and moves along the longitudinal direction of the housing is exposed on the receiving tray, the fluid ejecting nozzle can be operated more uniformly than the conventional manual ejecting nozzle. evenly cleaning liquid to the heat exchanger C finned, by blowing the air or other fluid can be made uniform cleaning operation, moreover, it bellows extension by the movement of the moving base
The through hole completely without obstructing the movement of the moving table.
It is possible to cover and eliminate the necessity of providing a large hole for operating the fluid ejection nozzle as in the case of manually operating the fluid ejection nozzle as in the conventional example. to it there is no prior to the cleaning operation, or Remove the items below the place where the air conditioning Desho toner are installed, it is not necessary to prepare that prior to washing such as laying a waterproof sheet to partial, deer
Since the parts material be installed in the ceiling is supported all pan, work only installing the pan to ceiling 据 <br/> with means, to be able to complete the installation of the ceiling, required for installation You can save time. Moreover, since the drive device is provided on the lower surface of the pan,
該駆 kinematic device can be safely used such it is not wetted by the washing liquid.

According to the third aspect of the present invention, there is provided a cleaning device for a heat exchanger of a ceiling-mounted air conditioner according to the third aspect.
In addition to the effects provided by the exchanger cleaning device,
A motor that moves the motor up and down and rotates around a vertical axis.
Make sure that it does not protrude significantly from the bottom of the pan.
Can be mounted on the ceiling, and the pan can be mounted on the ceiling
Work is easy to perform.

[0044]

In the apparatus for cleaning a heat exchanger of a ceiling-mounted air conditioner according to the fifth aspect, the cleaning liquid, air, etc. , which are jetted from a fluid jet nozzle.
Long finned heat exchange without wasting fluid
The vessel can be evenly washed.

[0046]

[Brief description of the drawings]

FIG. 1 is a perspective view of an air conditioner.

FIG. 2 is a perspective view of a heat exchanger.

FIG. 3 is a side view showing an embodiment of the present invention.

FIG. 4 is a plan view of a saucer portion.

FIG. 5 is a cut-away side view of a state in which a saucer portion is installed.

FIG. 6 is an enlarged view taken along line AA of FIG. 5;

FIG. 7 is a cutaway side view of the fastening part.

FIG. 8 is an enlarged view of a bogie part.

FIG. 9 is a circuit diagram of a motor drive unit for moving up and down.

FIG. 10 is a circuit diagram of a drive unit of a motor for rotating the motor.

FIG. 11 is an operation circuit diagram.

FIG. 12 is a plan view of another embodiment.

FIG. 13 is a side view of FIG.

FIG. 14 is a plan view of still another embodiment.

FIG. 15 is a side view of FIG. 14;

FIG. 16 is a cut-away side view of a state where the air conditioner is attached to the air conditioner.

17 is an enlarged side view of the fluid ejection nozzle portion of FIG.

FIG. 18 is an enlarged side view of a connecting portion between the support rod and the hose.

19 is an operation circuit diagram of FIG.

FIG. 20 is a cut side view of the support base.

FIG. 21 is an explanatory view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Installation means 2 Receiving tray 3 Fluid injection nozzle 4 Support rod 5 Support rod 7 Driving device 14 Dolly

Claims (4)

(57) [Claims] 1. A saucer for covering a lower portion of a housing of a ceiling-mounted air conditioner having a heat exchanger with fins disposed in a substantially annular shape in a housing having a lower surface opened, and a saucer closely attached to a lower end of the housing. An installation means that can be installed, a driving device supported on the lower surface of the pan, and a fluid ejecting nozzle facing the pan that rotates up and down and rotates about a vertical axis by the driving device; a cleaning liquid-air or other fluid towards the heat exchanger finned as blown from the nozzle, receiving
In the center of the dish, the cleaning liquid / air
Supply pipe for supplying other fluid, and raise and lower the fluid injection nozzle
A through hole through which a rack to be moved is inserted;
A heat exchanger for a ceiling-mounted air conditioner, further comprising a lid that rotates integrally with the fluid jet nozzle . 2. A pan for covering a lower part of a housing of a ceiling-mounted air conditioner provided with a finned heat exchanger at least along a longitudinal direction of the housing in a longitudinal housing having an open lower surface; Mounting means for placing the tray in close contact with the lower end of the body, a driving device supported on the lower surface of the tray, and a vertical movement and a movement on the tray moving along the longitudinal direction of the housing by the driving device. and a fluid injection nozzle Mase, a cleaning liquid-air or other fluid from the fluid jet nozzle as blown toward the heat exchanger finned, the saucer, before
Supply cleaning fluid, air and other fluids to the fluid ejection nozzle.
Supply pipe and a rack for moving the fluid ejection nozzle up and down.
A housing provided with a through-hole along the longitudinal direction to be inserted;
The fluid injection nozzle is moved to a movable table that moves along the longitudinal direction of the fluid injection nozzle.
Between the front and rear of the carriage and the end of the pan.
A bellows for covering the through-hole is provided so as to be stretched over the ceiling, and the heat-exchanger of the heat exchanger of the ceiling-mounted air conditioner is provided . 3. A saucer for covering a lower portion of a housing of a ceiling-mounted air conditioner having a heat exchanger with fins disposed in a substantially annular shape in a housing having a lower surface opened, and a saucer being closely attached to a lower end of the housing. An installation means that can be installed, and a fluid ejecting nozzle facing up and down on the saucer that moves up and down and rotates about a vertical axis by a driving device attached to the lower surface of the saucer. In the cleaning device of the heat exchanger of the ceiling-mounted air conditioner, which blows the fluid toward the heat exchanger with fins, two ball bearings having a ball interposed between the inner race and the outer race, The outer races are supported on the tray at the upper and lower sides at intervals, and are fixed to the inner race of the ball bearing within the intervals. The vertical movement motor for vertically moving the rotating motor and the fluid injection nozzle is rotated is provided, and the internal teeth s car fixed on Autare scan beneath the ball bearing, the rotating motor shaft on the internal teeth s car And the fluid ejecting nozzle is supported on a rack rod that moves up and down in conjunction with the motor for up and down movement so that the fluid ejection nozzle faces a saucer. Cleaning equipment. 4. A fluid ejection nozzle which is provided before and after in a moving direction of a moving table which moves along a longitudinal direction of a housing in conjunction with the driving device, the fluid ejecting nozzles being provided before and after and in a left and right direction, respectively. 3. The ceiling-mounted air conditioner according to claim 2, wherein the nozzle ejects a cleaning liquid, air or other fluid from the fluid ejection nozzle when the fluid ejection nozzle approaches an inner surface of the heat exchanger. Heat exchanger cleaning equipment.