JP2011007348A - Cleaning device of unit cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning device of a unit cooler coping with a narrow installation place, and reducing equipment cost and operation cost by reducing the amount of water necessary for cleaning.SOLUTION: In the device 1 for cleaning a surface of a cooling coil 48 of the unit cooler 41, the cleaning device of the unit cooler includes a tap water supply opening 16, and spray nozzles 11-14 for spraying the tap water supplied to the supply opening 16 while switched to regions 10A-10D obtained by dividing the entire cleaning region of the surface of the coil 48 into the plurality of regions. A plurality of cleaning pipes 6 extended in the longitudinal direction of the coil 48 are disposed, each of the cleaning pipes has branch pipes 7, 8 and the spray nozzles 11-14 disposed on both ends of the branch pipes, and the tap water supplied to the supply opening can be supplied while selectively switched to any of the plurality of the cleaning pipes.

Description

  The present invention relates to a unit cooler cleaning apparatus, and more particularly to an apparatus for washing away corrosive gas that causes corrosion of a coil surface through which a refrigerant in a unit cooler installed in a food factory or the like passes.

  Conventionally, in freezing and refrigeration equipment installed in food factories to store various processed foods, components such as chlorine contained in chlorinated water for washing foods and sulfide contained in onions become corrosive gases, and unit coolers There is a problem that the coil is corroded by causing a chemical reaction with the coil material through water droplets attached to the surface of the cooling coil (hereinafter referred to as “coil” as appropriate) through which the refrigerant passes.

  Therefore, in order to prevent corrosion of the coil, a method of preventing the coil surface from being rusted is conceivable. However, rust prevention of the coil surface not only increases the product cost but also cannot cope with all corrosive components. Another problem is that dust contained in the air circulating in the factory accumulates on the coil surface.

  Therefore, conventionally, in order to protect the coil of the unit cooler, based on the knowledge that washing with water is the best, the washing water is transferred from the water storage tank to the unit cooler by a pump, and the coil of the unit cooler is washed evenly. The method is adopted.

  FIG. 3 shows a conventional unit cooler described in Patent Document 1 and the like. The unit cooler 41 includes a fan 44, a coil 48, a drain pan 51 for collecting frost dissolved at the time of defrost, a drain port 53, and the like. And a water supply port 46 for cleaning the coil 48, a cleaning pipe 45, and the like. The cleaning water is supplied to the water supply port 46 via a tank or a pump (not shown) provided outside the unit cooler 41.

  In the unit cooler 41, the refrigerant is supplied from the refrigerant inlet 49 to the coil 48, passes through the coil 48, and then is discharged from the refrigerant outlet 50. On the other hand, the air taken into the unit cooler 41 from the air suction port 43 is cooled by the coil 48 and then discharged from the air discharge port 42 by the fan 44 to cool food in the freezer / refrigerator.

  4A and 4B are schematic views showing an example of a cleaning device mounted on a conventional unit cooler 41 of this type, in which FIG. 4A is a front view and FIG. 4B is a plan view. The cleaning device 52 includes a tank 55 and a plurality of cleaning pipes 45 connected to a pump 56 above the coil 48, and the cleaning water flows out from several tens of slit holes 58a opened in each of the cleaning devices. .

  When the cleaning device 52 is operated, the cleaning water supplied from the tank 55 via the pump 56 is introduced into the water supply port 46, guided to the spray bottle 58 through the cleaning pipe 45, and is supplied to each spray bottle 58. It is sprayed toward the coil 48 simultaneously from the many slit holes 58a provided.

Japanese Utility Model Publication No. 5-59167

  However, in the above prior art, in order to clean the entire coil 48 of the unit cooler 41 evenly, a large amount of cleaning water (about 50 to 150 liters / min) is always used for a certain period of time, so the operating cost increases. In addition to being unable to clean the place where cleaning equipment such as the pump 56 and the tank 55 cannot be installed, the water stored in the tank 55 tends to become dirty, so the tank 55 needs to be cleaned regularly. there were. Further, when the cleaning method is a method in which water is sprayed from the nozzle toward the entire coil, there is a problem that a large amount of water of about 100 to 400 liter / min is required.

  Therefore, the present invention has been made in view of the problems in the above-described conventional technology, does not require a water supply facility including a pump, can be applied to a narrow installation place, and reduces the amount of water required for cleaning. It is an object of the present invention to provide a unit cooler cleaning device that can reduce facility costs and operation costs.

  In order to achieve the above object, the present invention is an apparatus for cleaning the surface of a cooling coil of a unit cooler, comprising a water supply port from a water supply source and water supplied to the supply port. And a cleaning means for switching and spraying the entire cleaning area of the coil surface into a plurality of divided areas.

  And according to this invention, the whole washing | cleaning area | region of the surface of a coil can be switched according to the area | region divided | segmented into plurality, and the whole washing | cleaning area | region of the coil surface can be wash | cleaned uniformly by ejecting the water from a water supply source.

  In the above-described unit cooler cleaning apparatus, the cleaning means includes a plurality of cleaning pipes extending in the longitudinal direction of the coil, and each of the cleaning pipes has a branch pipe and spray nozzles at both ends of the branch pipe. And the water supplied to the supply port can be selectively switched and supplied to one of the plurality of cleaning pipes.

  Further, in the above-described unit cooler cleaning device, the cleaning means includes the supply port at one end, and the body portion is connected to each of the plurality of cleaning pipes, and a plurality of openings arranged at predetermined intervals. An outer cylinder having a portion, and an inner cylinder having an internal space communicating with the inside of the outer cylinder inside the outer cylinder, the body portion being different from an opening portion disposed in the body portion of the outer cylinder An inner cylinder having a plurality of openings disposed at a position, wherein any one of the plurality of openings of the inner cylinder overlaps with any one of the plurality of openings of the outer cylinder, The water can be supplied to any one of the plurality of cleaning pipes.

  Further, in the above-described unit cooler cleaning device, the water supply source can be a general-purpose water tap, and tap water is used as the cleaning water, so that a conventional water supply facility including a pump and a tank is not required, and is narrow. The installation location can be accommodated, and the equipment cost and operation cost can be reduced.

  As described above, according to the present invention, it is possible to cope with a narrow installation place, it is possible to reduce the amount of water required for cleaning, and it is possible to reduce the equipment cost and the operating cost. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows one Embodiment of the washing | cleaning apparatus of the unit cooler concerning this invention, (a) is a front view, (b) is a top view, (c) is a side view. It is sectional drawing which shows the outer cylinder and inner cylinder which are used for the washing | cleaning apparatus of the unit cooler of FIG. It is a figure which shows the unit cooler using the conventional washing | cleaning apparatus, Comprising: (a) is a front view, (b) is a side view. It is a schematic block diagram which shows one Embodiment of the washing | cleaning apparatus of the conventional unit cooler, (a) is a front view, (b) is a top view.

  Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an embodiment of a unit cooler cleaning device according to the present invention (hereinafter, abbreviated as “cleaning device” where appropriate). This cleaning device 1 is used to clean the conventional unit cooler shown in FIG. Similar to the apparatus, the outer cylinder 3 is arranged above the coil 48 of the unit cooler 41 shown in FIG. 3 and is supplied with tap water, and the inside of the outer cylinder 3 is slidable in the axial direction of the outer cylinder 3. The cylinder 2, the actuator 5 that slides the inner cylinder 2, the control device 4 for the actuator 5, four cleaning pipes 6 (6 </ b> A to 6 </ b> D) connected to the outer cylinder 3, and the vertical from the cleaning pipe 6 Branch pipes 7 (7A to 7D) and 8 (8A to 8D) branching in the direction, and spray nozzles 11 to 14 attached to both ends of the branch pipes 7 and 8 (two are arranged in each branch pipe) And a cleaning means including the like.

  As shown in FIG. 2, the outer cylinder 3 has a tap water supply pipe 3b connected to the right end of a cylindrical main body 3a, the left end is opened, and the inner cylinder 2 is inserted. Openings 3d and 3e are formed in the body portion of the outer cylinder 3, and the openings 3d and 3e communicate with the cleaning pipes 6A and 6B, respectively. Although not shown, the body portion of the outer cylinder 3 is further provided with two openings that communicate with the cleaning pipes 6C and 6D, and a total of four openings are arranged at predetermined intervals. The

  The inner cylinder 2 is formed in a cylindrical shape in which the left end of the main body 2a is closed and the right end is opened, and openings 2c and 2d are formed in the body part. In addition, although illustration is abbreviate | omitted, in the trunk | drum part of the inner cylinder 2, two opening parts are further drilled. These four openings are arranged at predetermined intervals, but are arranged at intervals different from the openings arranged in the body part of the outer cylinder 3. The inner cylinder 2 can slide inside the outer cylinder 3 by an actuator 5 (see FIG. 1).

  The actuator 5 is provided for sliding the inner cylinder 2 in the left-right direction inside the outer cylinder 3, and an electric actuator is used.

  The control device 4 is provided to control the position of the inner cylinder 2 inside the outer cylinder 3, and controls the position of the inner cylinder 2 via the actuator 5 according to a predetermined program.

  As shown in FIG. 1B, the cleaning pipe 6 (6A to 6D) extending in the longitudinal direction of the coil communicates with the openings 3d and 3e (see FIG. 2) of the outer cylinder 3 at one end. Each of the cleaning pipes 6 has two branch pipes 7 (7A to 7D) and 8 (8A to 8D) extending so as to branch in the vertical direction with respect to the cleaning pipe 6. Spray nozzles 11 to 14 are attached to both ends of the branch pipes 7 and 8, and a total of 16 spray nozzles 11 to 14 are provided.

  As shown in FIGS. 1A and 1C, branch pipes 7A to 7D and 8A to 8D branched from the cleaning pipes 6A to 6D are arranged in the horizontal direction. As shown in FIG. 1 (b), the entire cleaning region of the coil surface is divided into four parts by the cleaning pipe 6A, the branch pipes 7A and 8A, and the spray nozzle 11 attached to the branch pipes 7A and 8A. Washing is performed by spraying washing water onto the region 10A which is one of the above. Further, the region 10B is formed by the cleaning pipe 6B, the branch pipes 7B and 8B, and the spray nozzle 12, the region 10C is formed by the cleaning pipe 6C, the branch pipes 7C, 8C, and the spray nozzle 13, and the cleaning pipe 6D and the branch pipe. The region 10D is cleaned by the 7D, 8D, and the spray nozzle 14.

  Next, operation | movement of the washing | cleaning apparatus 1 which has the said structure is demonstrated, referring FIG.1 and FIG.2. In the following description, first, the case where the region 10B of the coil 48 is cleaned using the system of the cleaning pipe 6B will be described.

  As shown in FIG. 2, the inner cylinder 2 is slid inside the outer cylinder 3 by the control device 4 via the actuator 5, and the opening 2 d of the inner cylinder 2 is aligned with the opening 3 e of the outer cylinder 3. . Then, the tap water supplied to the tap water supply pipe 3b of the outer cylinder 3 flows into the cleaning pipe 6B. Thereafter, the tap water flows from the cleaning pipe 6B to the branch pipes 7B and 8B, and is finally sprayed from the spray nozzle 12 to the region 10B of the coil 48, so that the region 10B can be cleaned.

  Then, the tap water introduced into the supply port 16 is coiled 48 as shown in FIG. 3 by sequentially overlapping the opening of the body portion of the inner cylinder 2 with the desired opening of the body portion of the outer cylinder 3. Spraying is performed while switching the region to the surface regions 10C, 10D, and 10A of the surface, and when one cycle has elapsed, cleaning of the entire cleaning region of the surface of the coil 48 is completed. The cleaning time of each region 10A to 10D and the cleaning time interval by the cleaning device 1 can be controlled by the control device 4.

  As described above, in the present embodiment, the entire cleaning region on the surface of the coil 48 can be divided into a plurality of regions 10A to 10D, and the amount of cleaning water used during cleaning can be greatly reduced. By using a general-purpose water faucet, conventional cleaning facilities such as tanks and pumps are unnecessary, and it is possible to cope with a narrow installation place, and it is possible to reduce facility costs and operation costs. In addition, according to this system, the required amount of water is 30 to 80 liters / min, and the operating cost can be greatly reduced as compared with the conventional method.

  In the above embodiment, the outer cylinder 3 and the spray nozzles 11 to 14 are connected using the cleaning pipe 6 and the branch pipes 7 and 8, but a flexible hose is used without using these pipes. The outer cylinder 3 and the spray nozzles 11 to 14 can also be connected.

  Moreover, in the said embodiment, although the washing | cleaning area | region 10A-10D was switched by combining the inner cylinder 2 and the outer cylinder 3, switching of a washing | cleaning area is not limited to this method, but various The method can be used. Further, the entire cleaning area on the surface of the coil 48 can be cleaned by moving the cleaning function including the spray nozzle to the cleaning areas 10A to 10D without switching the cleaning areas 10A to 10D.

  Furthermore, in the said embodiment, although it sprays on the surface of the coil 48 with the spray nozzles 11-14, you may make it eject water in aspects other than a mist form.

DESCRIPTION OF SYMBOLS 1 Cleaning apparatus 2 Inner cylinder 2a Main body 2c Opening part 2d Opening part 3 Outer cylinder 3a Main body 3b Tap water supply pipe 3d Opening part 3e Opening part 4 Control apparatus 5 Actuator 6 (6A-6D) Cleaning pipe 7 (7A-7D) Branch pipe 8 (8A-8D) Branch pipe 10 (10A-10D) (cleaning) area 11-14 Spray nozzle 11a Spray area 16 Supply port 41 Unit cooler 48 Coil

Claims (4)

An apparatus for cleaning the surface of a cooling coil of a unit cooler,
A water supply port from a water supply source;
A cleaning device for a unit cooler, comprising: cleaning means for switching the water supplied to the supply port to be jetted by switching the entire cleaning region on the surface of the coil into a plurality of divided regions.   The cleaning means includes a plurality of cleaning pipes extending in the longitudinal direction of the coil, each of the cleaning pipes includes a branch pipe and spray nozzles at both ends of the branch pipe, and is supplied to the supply port. 2. The unit cooler cleaning apparatus according to claim 1, wherein the water is selectively switched and supplied to any of the plurality of cleaning pipes. The cleaning means includes the supply port at one end, and an outer cylinder having a plurality of openings arranged at predetermined intervals, each communicating with each of the plurality of cleaning pipes in the body portion,
An inner cylinder having an internal space communicating with the inside of the outer cylinder inside the outer cylinder, and a plurality of openings disposed in the body portion at intervals different from the openings disposed in the body portion of the outer cylinder An inner cylinder having a portion,
Water is supplied from the supply port to any one of the plurality of cleaning pipes by overlapping any one of the plurality of openings of the inner cylinder with any one of the plurality of openings of the outer cylinder. The unit cooler cleaning device according to claim 2, wherein the unit cooler is cleaned.   4. The unit cooler cleaning device according to claim 1, wherein the water supply source is a general-purpose water tap.

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