JP2008076030A - Washer and washer for unit cooler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rotate a jet nozzle without using a special drive means to uniformly wash a heat exchange unit. <P>SOLUTION: A water supply pipe 3 force-feeding a washing liquid is rotatably pivotally mounted with a plurality of jet nozzles 2. The jet nozzle 2 is formed with jet holes jetting the washing liquid, the washing liquid is sent to the jet nozzle 2 through each branch pipe 6, and the washing liquid is jetted toward the heat exchange unit 11 from the jet holes of the jet nozzle 2. At this time, the adjacent jet nozzles 2 jet the washing liquid onto the whole surface of the heat exchange unit 11 all over as rotating in directions opposite to each other by pressure of the washing liquid jetted from the jet holes to remove dirt adhering to the heat exchange unit 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cleaning device for cleaning a heat exchange unit of a unit cooler with a cleaning liquid sprayed to an injection nozzle, and a cleaning device for a unit cooler.

  In general, unit coolers are installed in factories where work is performed with room temperature kept at a low temperature. Industrial unit coolers are always in operation and are designed to maintain cooling performance or clean indoors. Cooler cleaning is important. In recent years, in offices and general households, there has been a growing demand for air-conditioner cleaning from the viewpoint of hygiene and performance maintenance such as generation of bad odors and mold generated from air conditioners (hereinafter referred to as air conditioners). In response to such a demand, for example, Patent Document 1 discloses a swivel spray nozzle and a plurality of detergent liquids in the swivel spray nozzle as an automatic cleaning device that automatically cleans a heat exchanger of a ceiling-embedded air conditioner. And various pipes for switching and supplying the compressed air, a switching valve for selectively supplying the detergent liquid, the cleaning liquid and the compressed air to the spray nozzle, the pressure feeding means for the cleaning liquid, the air compressor for sending the compressed air, and these pressure feeding means, An automatic cleaning device is disclosed that includes a control unit that controls automatic switching of an air compressor.

  This automatic cleaning apparatus is supplied with pressurized detergent liquid from the cleaning nozzle which has started to rotate and the pumping means starts operating according to the operation program of its control unit. Next, when the oily dirt adhering to the heat exchanger has been removed, the switching valve is automatically switched over, the pressurized cleaning liquid is supplied from the injection nozzle, and the detergent liquid adhering to the heat exchanger is washed away to operate the pressure feeding means. To stop. Thereafter, the air compressor is started, and the switching valve is automatically switched to inject compressed air from the injection nozzle, thereby rapidly drying the heat exchanger wetted with the cleaning liquid. Thereafter, a series of automatic cleaning operations are completed as an initial state in which the switching valve is switched to supply the detergent liquid to the spray nozzle.

  In Patent Document 2, a forward / reverse drive motor is disposed at the center of the heat exchanger of the air conditioner, and the base plate is connected to the drive shaft so that the base plate can be rotated in the horizontal direction. In addition, a cleaning liquid spray nozzle is disposed on the base plate toward the inner wall of the heat exchanger, and the base plate is reciprocally rotated in the heat exchanger by a drive motor while the cleaning liquid is sprayed from the spray nozzle. An automatic air conditioner configured to suspend a drainage receiver for collecting cleaning wastewater at the lower position of the heat exchanger and drain the cleaning liquid from a drainage hose provided in the drainage receptacle while washing the heat exchanger A cleaning apparatus is disclosed.

JP-A-8-178590 JP 2004-333032 A

  In this type of cleaning apparatus, in order to increase the cleaning efficiency of the heat exchange unit (heat exchanger), it is indispensable to uniformly spray the cleaning liquid sprayed from the spray nozzle to every corner of the heat exchange unit. In Patent Documents 1 and 2, since the injection nozzle is rotated with respect to the heat exchange unit by a driving means such as a motor, the structure is not only complicated, but also from the viewpoint of power consumption of the driving means. However, this increases the cost, increases the weight of the entire apparatus, and is inconvenient to handle when mounted on the heat exchange unit.

  The present invention has been made in view of the above problems, and a cleaning apparatus capable of uniformly cleaning a heat exchange unit by rotating an injection nozzle with respect to the heat exchange unit without using a special driving unit, and It aims at providing the washing | cleaning apparatus of a unit cooler.

  The cleaning apparatus according to claim 1 is provided with a cleaning unit including an injection nozzle, a water supply pipe that supplies a cleaning liquid to the injection nozzle, and a cleaning liquid supply unit that supplies the cleaning liquid to the water supply pipe, and the injection nozzle is connected to the water supply. A plurality of injection holes for injecting the cleaning liquid are formed in the injection nozzle, and the injection direction of the cleaning liquid injected from the injection holes is set to the injection nozzles. It is characterized in that the nozzles are rotated in opposite directions with respect to the center of rotation of the nozzles, and each spray nozzle is urged to rotate by the cleaning liquid sprayed from each spray hole.

  According to the configuration of the first aspect, the cleaning liquid is pumped from the water supply pipe toward the spray nozzle by the cleaning liquid supply means, and the cleaning liquid is sprayed from the spray hole of the spray nozzle toward the object to be cleaned. The cleaning liquid is sprayed onto the object to be cleaned while the spray nozzle is rotated by the pressure of the cleaning liquid sprayed from the spray hole, and the dirt adhering to the object to be cleaned is removed.

  A cleaning device according to a second aspect is the cleaning device according to the first aspect, wherein a plurality of the injection nozzles are arranged side by side, and the adjacent injection nozzles are cleaned by a cleaning liquid injected from the injection holes formed in the respective injection nozzles. It is characterized by being urged to rotate in opposite directions.

  According to the configuration of the second aspect, in order to suppress uneven injection of the cleaning liquid sprayed to the heat exchange unit by rotating adjacent spray nozzles in opposite directions, a part of the rotation region of each spray nozzle is If the injection nozzles are arranged so as to overlap, even if the end of an adjacent injection nozzle hits, the injection nozzle rotates in a direction that allows rotation of the injection nozzle, so the injection nozzle is caught and rotation of the injection nozzle stops There is no worry to do.

  The cleaning apparatus according to claim 3 is the cleaning apparatus according to claim 2, wherein the water supply pipe includes a main water supply pipe that supplies the cleaning liquid and a plurality of branch pipes that are branched from the main water supply pipe and arranged in parallel. The jet nozzles are rotatably supported on the branch pipes.

  According to the configuration of claim 3, the cleaning liquid is pumped from the main water supply pipe to each branch pipe, the cleaning liquid is sent from each branch pipe to the injection nozzle, and the cleaning liquid is sprayed from the injection hole of the injection nozzle toward the cleaning target. Thus, the adjacent spray nozzles spray the cleaning liquid onto the object to be cleaned by the pressure of the cleaning liquid sprayed from the spray holes.

  According to a fourth aspect of the present invention, there is provided a cleaning apparatus for a unit cooler, wherein the cleaning apparatus according to any one of the first to third aspects is mounted on the back side of the heat exchange unit of the unit cooler, and the heat exchange unit is cleaned with a cleaning liquid sprayed from the spray nozzle. It is characterized by.

  According to the configuration of claim 4, the heat exchange is performed by attaching the cleaning unit to the back of the heat exchange unit of the unit cooler at the time of user's request or maintenance, and spraying the cleaning liquid from the spray hole of the spray nozzle toward the cleaning unit. The dirt attached to the unit can be efficiently removed to clean the dirt attached to the heat exchange unit.

  According to the present invention, the cleaning unit is attached to the back of the unit cooler, and when the cleaning liquid is sprayed from the spray nozzle toward the heat exchange unit, the spray nozzle rotates and sprays the cleaning liquid onto the heat exchange unit. In this case, the cleaning liquid can be sprayed over the entire area of the heat exchange unit without being partially sprayed. In addition, since the spray nozzle is rotated by the pressure of the cleaning liquid sprayed from the spray hole, no special driving means for rotating the spray nozzle is required, the structure is simple, and the manufacturing cost can be reduced. The heat exchange unit is lighter and can be easily attached to and removed from the unit cooler. Further, since the adjacent injection nozzles are urged to rotate in opposite directions, even if the end portions of the adjacent injection nozzles hit each other, the injection nozzles rotate in a direction that allows rotation of the injection nozzles respectively. The rotation of the spray nozzle does not stop.

  Hereinafter, an embodiment as the best mode for carrying out the present invention will be described with reference to FIGS. Of course, it goes without saying that the present invention can be easily applied to other than those described in the embodiments without departing from the spirit of the invention.

  With reference to FIG. 1, the outline of the washing | cleaning unit of the unit cooler in a present Example is demonstrated. In this embodiment, a case where the present invention is applied to a cleaning unit 1 for cleaning an industrial unit cooler installed indoors in a factory or the like will be described as an example. The cleaning unit 1 in this embodiment includes a plurality of (four in this embodiment) injection nozzles 2, a water supply pipe 3 that supplies the cleaning liquid to the injection nozzle 2, and a cleaning liquid supply that pumps the cleaning liquid to the water supply pipe 3. It comprises a pump 3a as means, a frame-like mounting frame 4 to which the water supply pipe 3 is attached, and the like.

  The water supply pipe 3 includes a main water supply pipe 5 and a plurality of branch pipes 6 that are branched from the main water supply pipe 5 and are arranged in parallel. It is pivotally supported. The interval between the adjacent branch pipes 6 is set to be slightly narrower than the half length of each injection nozzle 2, and each injection nozzle 2 of each branch pipe 6 is arranged so that the rotation areas of the injection nozzles 2 overlap each other. ing. In addition, a pressure adjustment valve 7 is provided between the water supply pipe 3 and the pump 3 a, and the pressure of the cleaning liquid sprayed from the injection hole 8 formed in the injection nozzle 2 is adjusted by the pressure adjustment valve 7. As shown in FIG. 3, the injection hole 8 formed in each of the injection nozzles 2 is formed obliquely downward (in the cleaning unit 1 side) on either the left or right side with respect to the center of the injection nozzle 2 (in FIG. 3, The example is formed on the right side), and is formed so as to be symmetric with respect to the shaft support portion 2a serving as the rotation center of the injection nozzle 2. As a result, the spray nozzle 2 rotates about the shaft support portion 2a by the pressure P of the cleaning liquid sprayed from each spray hole 8. In addition, each injection nozzle 2 that is pivotally connected to the tip of each branch pipe 6 is formed with an injection hole 8 so that the adjacent injection nozzles 2 are reversely rotated. That is, they are alternately arranged at the tip of each branch pipe 6 so that the directions of the injection holes 8 formed in the adjacent injection nozzles 2 are reversed.

  The cleaning unit 1 is mounted on the back surface of the heat exchange unit 11 of the unit cooler 10 by the mounting frame 4 and cleans the heat exchange unit 11 by spraying a cleaning liquid from each spray nozzle 2 toward the heat exchange unit 11. The cleaning unit 1 is covered with a hood 12 to prevent the cleaning liquid from splashing, and drains the waste water that has cleaned the heat exchange unit 11 from the drain pipe 13. In FIG. 2, reference numeral 15 is a blower fan for sending cold air from a blower opening 19 provided on the front side of the unit cooler 10, and 17 is a scattering prevention plate provided between the heat exchange unit 11 and the blower fan 15. is there.

  The operation of the cleaning unit 1 configured as described above will be described. First, after the cleaning unit 1 is attached to the back surface of the heat exchange unit 11 by the mounting frame 4, the hood 12 is attached to the back surface of the heat exchange unit 11 to cover the heat exchange unit 11.

  Next, the pressure of the cleaning liquid injected from the injection hole 8 formed in the injection nozzle 2 is set by the pressure adjusting valve 7, and the pump 3a is activated to inject the cleaning liquid in a tank (not shown) under a predetermined pressure. Pump toward nozzle 2. Thus, the cleaning liquid is sent from the main water supply pipe 5 through the branch pipes 6 to the injection nozzle 2, and the cleaning liquid is injected from the injection holes 8 of the injection nozzle 2 toward the heat exchange unit 11. Adjacent spray nozzles 2 spray the cleaning liquid over the entire surface of the heat exchange unit 11 while rotating in the opposite directions by the pressure of the cleaning liquid sprayed from the spray holes 8 to efficiently remove dirt adhering to the heat exchange unit 11. To remove. The cleaning liquid sprayed on the heat exchange unit 11 is drained from the drain pipe 13 to the outside of the unit cooler 10 together with the dirt adhering to the heat exchange unit 11. Further, at the time of cleaning, the splashing plate 17 provided between the heat exchange unit 11 and the blower fan 15 scatters the cleaning liquid sprayed from the spray nozzle 2 to the blower fan 15 and the cleaning liquid from the blower port 19 to the outside. Outflow can be prevented.

  As described above, the cleaning unit 11 in this embodiment can be attached to the back of the unit cooler 10 installed at the time of user's request or maintenance, and can effectively remove the dirt adhering to the heat exchange unit 11. 11 can be easily cleaned. Further, at the time of cleaning, the plurality of spray nozzles 2 arranged in parallel are rotated to spray the cleaning liquid onto the heat exchanging unit 11, so that the cleaning liquid is not partially sprayed onto the heat exchanging unit 11, and almost the heat exchanging unit. 11, the cleaning liquid can be sprayed over the entire area, and since the spray nozzle 2 is rotated by the pressure of the cleaning liquid sprayed from the spray hole 8, a special drive for rotating the spray nozzle 2 is performed. No means are required, the structure is simple, the manufacturing cost can be reduced, and the weight of the heat exchange unit 11 makes it easy to attach to and detach from the unit cooler 1 and is convenient for handling. Further, the injection nozzles 2 are arranged so that the rotation areas of the injection nozzles 2 overlap each other in order to inject the cleaning liquid over the entire area of the heat exchange unit 11, but are formed in the adjacent injection nozzles 2. By changing the direction of the injection hole 8 of the injection nozzle 2, the adjacent injection nozzles 2 are urged to rotate in opposite directions, so even if the end of the adjacent injection nozzle 2 hits, The rotation is not restricted. That is, when the rotation directions of all the injection nozzles 2 arranged in parallel are aligned, when the end portions of the adjacent injection nozzles 2 are abutted by the rotation speed of the injection nozzles 2 or the like, the injection nozzles 2 are caught when the rotation directions are the same. Although there is a possibility that the rotation of the injection nozzle 2 may stop, even if the end portions of the adjacent injection nozzles 2 are abutted by setting the rotation directions of the adjacent injection nozzles 2 to be opposite to each other, the injection nozzles 2 respectively. Since the injection nozzle 2 rotates in a direction that permits the rotation of the injection nozzle 2, the rotation of the injection nozzle 2 does not stop.

  As mentioned above, although one Example of this invention was explained in full detail, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the pump 3a is used as the cleaning liquid supply means, but the water tap and the water supply pipe 3 may be connected to omit the pump 3a. Further, the number of spray nozzles and the basic configuration of the cleaning unit 1 are not limited to the above-described embodiment, and may be selected as appropriate.

It is a front view of the washing | cleaning unit which shows one Example of this invention. It is a side view of a washing | cleaning unit same as the above. It is sectional drawing of an injection nozzle same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cleaning unit 2 Injection nozzle 3 Water supply pipe 5 Main water supply pipe 6 Branch pipe 8 Injection hole 10 Unit cooler 11 Heat exchange unit

Claims (4)

  A cleaning unit including an injection nozzle, a water supply pipe that supplies the cleaning liquid to the injection nozzle, and a cleaning liquid supply unit that sends the cleaning liquid to the water supply pipe is provided, and the injection nozzle is pivotally supported by the water supply pipe. In addition, a plurality of injection holes for injecting the cleaning liquid are formed in the injection nozzle, and the injection directions of the cleaning liquid injected from the injection holes are mutually bounded by the rotation center of the injection nozzles. The cleaning apparatus is characterized in that each spray nozzle is rotated and biased by a cleaning liquid sprayed from each spray hole.   A plurality of the spray nozzles are arranged side by side, and adjacent spray nozzles are urged to rotate in opposite directions by a cleaning liquid sprayed from spray holes formed in the spray nozzles. The cleaning apparatus according to 1.   The water supply pipe is composed of a main water supply pipe that supplies the cleaning liquid and a plurality of branch pipes that are branched from the main water supply pipe, and the injection nozzles are rotatably supported on the branch pipes. The cleaning apparatus according to claim 2.   A cleaning apparatus for a unit cooler, wherein the cleaning apparatus according to any one of claims 1 to 3 is mounted on a back side of a heat exchange unit of a unit cooler, and the heat exchange unit is cleaned with a cleaning liquid sprayed from the spray nozzle.

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