JP5348731B2 - Refrigerator unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator unit capable of suppressing occurring of dew condensation near a heat insulating case without significantly increasing the number of components. <P>SOLUTION: The heat insulating case 30 is provided with a plurality of recessed grooves on its outer surface. A surface material 37 is attached to the roughly whole surface of the outer surface of the heat insulating case 30, and an air flow passage 50 is formed between the recessed grooves and the surface material 37. The warm exhaust after heat exchange with a condenser 16 is guided into the flow passage 50 by a condenser fan 19. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a refrigerator unit mounted on a top surface of a cooling storage such as a prefabricated refrigerator.

  Conventionally, a prefabricated cooling storage unit has a refrigerator unit 10 mounted on the top surface 3 of a box 2 formed by assembling a heat insulating panel as shown in FIG. It is location. As shown in FIG. 2, the refrigerator unit 10 has a compressor 15, a condenser 16, an electrical box 18 containing control parts and a condenser fan 19 mounted on a base 12. Further, the base 12 is provided with an opening (not shown) so as to face the communication port provided on the top surface 3 of the box 2, and a heat insulating case 20 is disposed so as to cover the opening. The cooler 24 and the cooling fan 25 are housed inside. The heat insulating case 20 is divided into a lower case 21 and an upper case 22 attached to the upper surface of the lower case 21, and the upper case 22 can be removed by removing the two fastening bands 23. The cooler 24 and the cooling fan 25 accommodated in the main body can be maintained (see Patent Document 1). The lower case 21 is provided with an air inlet 27 and an air outlet 28 through the opening provided in the base 12 so as to be opposed to the communication port. Then, after the heat is exchanged with the cooler 24, the inside of the storage is cooled by returning the exhaust through the exhaust port 28.

In the refrigerator unit 10 configured as described above, although it is considered that the cool air is not leaked to the outside by the heat insulating case 20, it is difficult to completely shut off, and the heat insulating case 20 and the base 12 in the vicinity by heat conduction are difficult. Was cooled, and condensation sometimes occurred. Therefore, there is an air duct that is formed of sheet metal or the like around the heat insulating case 20 and that the warm exhaust from the condenser fan is guided in the air duct to prevent the occurrence of condensation (see Patent Document 2).
JP 2007-183066 A JP 2003-065651 A

  However, the air duct of Patent Document 2 has a large number of members, which causes a cost increase. Moreover, when performing maintenance of the cooler 24, the cooling fan 25, etc., it is necessary to remove the air duct before removing the upper case 22, and there is a problem that the number of man-hours during maintenance increases.

  That is, the present invention has been proposed in view of the above-mentioned problems inherent in the above-described conventional technology, and is a refrigeration capable of suppressing the occurrence of condensation without significantly increasing the number of parts. The purpose is to provide a machine unit.

In order to overcome the above-mentioned problems and achieve the desired purpose suitably, the refrigerator unit according to the present invention includes:
A base having an opening facing the communication port provided on the top surface of the cooling storage body, and a lower case and an upper case which are disposed so as to cover the opening and accommodate a cooler inside and are attached to the upper surface of the lower case A heat insulating case that is divided into two parts, a fastening band that is formed in a gate shape so as to press down the side surface and the upper surface of the heat insulating case, and for fastening the upper and lower cases, and a compressor that is mounted on the base , A refrigeration apparatus comprising a condenser and a condenser fan, and the like , and the fastening band on the side on which the compressor and the condenser are placed is provided with a guide plate protruding outward of the heat insulating case, Forming a groove on the outer surface of the heat insulation case, and forming a flow path of air by the groove and the surface material by sticking a surface material on the outer surface of the heat insulation case so as to cover the groove, The condenser flow in the flow passage. The exhaust from the emissions, characterized in that so as to guide through the guide plate.

  According to the refrigerator unit according to the present invention, it is possible to suppress the occurrence of condensation near the heat insulating case without significantly increasing the number of parts.

  Next, the refrigerator unit according to the present invention will be described below with reference to FIGS. In addition, since the fundamental structure and arrangement | positioning relationship, such as a compressor in a refrigerator unit and a condenser, are the same as that of the patent document 1 mentioned above, detailed description is abbreviate | omitted and it mainly demonstrates the part concerning invention. In the description, the front, back, left, and right directions in FIG. 1 and FIG. 2 are “front”, the back side is “rear”, and the left and right sides are “left and right”.

  As shown in FIG. 3, the heat insulating case 30 according to the present invention has a plurality of concave grooves extending in the left-right direction on the upper surface and the front-rear surface. Three concave grooves 32 are formed on the front surface and the rear surface so as to be parallel to each other, and five concave grooves 34 are formed on the upper surface so as to be parallel to each other. The left and right end portions of the groove 32 are open at the end surfaces in the extending direction of the groove 32, and an inflow side opening 38 and an outflow side opening 40 are formed. Further, the left end surface of the concave groove 34 on the upper surface, that is, the end surface on the side where the compressor and the condenser are provided is also opened, and an inflow side opening 42 is formed. As shown in FIG. 4, a vertical groove 36 is provided on the back surface so as to communicate with the right end of the groove 34.

  A surface material 37 is attached to the heat insulating case 30 formed as described above over substantially the entire outer surface of the heat insulating case 30 as shown in FIGS. The surface material 37 is stuck so as to close the grooves 32, 34, and 36, and a space S is formed between the groove and the surface material 37. Further, the air inlet 44 is formed by not providing the surface material 37 at the position corresponding to the inflow side openings 38 and 42 in the concave grooves 32 and 34. Further, the air outlet 46 (see FIG. 10) is formed by not providing the surface material 37 at the position corresponding to the required range of the outflow side opening 40 of the groove 32 and the lower end of the groove 36. . As described above, each inflow port 44 and the outflow port 46 communicate with each other through the space S formed between the concave grooves 32, 34, 36 and the surface material 37, thereby forming the air flow passage 50. Has been. The heat insulating case 30 is formed of a heat insulating foam such as styrene or urethane, and the surface material 37 is formed of an aluminum foil, a flame retardant resin, a sheet metal, or the like. In addition, the surface material 37 is bonded to the upper case and the lower case so that the upper case of the heat insulating case 30 can be removed during maintenance.

  Next, a fastening band for fastening the upper and lower cases in the heat insulating case 30 will be described with reference to FIG. However, since the right side fastening band is the same as that of Patent Document 1, description thereof will be omitted, and the left side (side on which the compressor or the like is disposed) will be described. The fastening band 60 according to the present invention is formed in a portal shape by two vertical plates 62 and horizontal plates 64. A fixing portion 66 for fixing to the base 12 is provided at the lower end portion of the vertical plate 62. By fixing the fixing portion 66 to the base 12 with screws, the vertical plate 62 presses the front and rear surfaces of the heat insulating case 30 and the horizontal plate 64 presses the upper surface of the heat insulating case 30, and the upper and lower cases in the heat insulating case 30 are fastened. . The left end of the front vertical plate 62 has an angle of about 45 degrees in the left rear direction, and the left end of the rear vertical plate 62 has an angle of about 45 degrees in the left front direction. Are provided so as to extend in the vertical direction. Further, a guide plate 69 is provided at the left end portion of the horizontal plate 64 so as to extend in the front-rear direction at an angle of about 45 degrees in the lower left direction.

  Next, the flow of the exhaust from the condenser fan 19 in the refrigerator unit 70 to which the heat insulating case 30 and the fastening band 60 configured as described above are attached will be described with reference to FIGS. 8 to 10. In addition, the arrow in a figure has shown the flow of exhaust_gas | exhaustion. As shown in FIG. 8, the warm exhaust gas after the heat exchange with the condenser 16 by the condenser fan 19 becomes a warmer exhaust gas by exchanging heat with the compressor 15 on the way to the heat insulating case 30. Sent. The exhaust gas diffuses by colliding with the left side surface of the heat insulating case 30, but a part of the exhaust gas is guided to the inflow port 44 by the guide plates 68 and 69 of the fastening band 60. As shown in FIGS. 9 and 10, the exhaust gas guided to each inflow port 44 passes through the flow passages 50 formed on the top surface, the front and back surfaces, and the right side surface of the heat insulating case 30, and finally forms on the right side surface. Each of the outlets 46 is discharged into the air.

  As described above, according to the refrigerator unit 70 of the embodiment, the exhaust air from the condenser fan 19 is passed through the flow passage 50 formed on the outer surface of the heat insulating case 30, so that the outer surface of the heat insulating case 30 (front and rear) Surface, top surface, right side surface) can be raised. Since the left side is a place where the exhaust directly hits, it can be warmed without the flow passage 50 provided. Further, by providing the outlet adjacent to the base 12 like the outlet 46 formed at the bottom of the right side surface, the right base 12 located farthest from the condenser fan 19 is directly exposed to the exhaust. The temperature rises. As described above, the heat transfer of the cool air is suppressed by warming the outer surface of the heat insulating case 30, and the occurrence of condensation in the heat insulating case 30 and its neighboring members (base 12, fastening band 60, etc.) is suppressed. If a non-combustible material having good thermal conductivity such as sheet metal is used as the surface material 37, the temperature of the outer surface rises uniformly and quickly, which is more effective. Further, the maintenance inside the heat insulating case 30 can be performed by removing the upper case if the left and right fastening bands are removed as usual.

[Example of change]
The present invention is not limited to the above-described embodiments, but can be modified as follows.
(1) The number of concave grooves is not limited to the number in the embodiment, and may be any number. Moreover, the cross-sectional shape of the groove is not limited to a square, and may be other shapes such as a U-shape or an inverted triangle. Furthermore, the heat exchange rate may be increased by forming the concave groove in another shape such as a meandering shape instead of a straight line.
(2) The outlet may be provided adjacent to the base not only on the right side surface of the heat insulation case but also on the front and rear surfaces. Further, the flow passage may be provided adjacent to the base. Thereby, the dew condensation in the base can be further suppressed.
(3) Although the exhaust plate is guided in the flow passage by providing a guide plate in the fastening band, a guide member may be integrally formed in the heat insulating case itself.
(4) The angle of the guide plate in the fastening band is not limited to 45 degrees and may be any number of times.

It is a schematic block diagram of the conventional prefabricated cooling storage. It is a perspective view of the conventional refrigerator unit. It is a front perspective view of the heat insulation case before the surface material sticking which concerns on an Example. It is a back perspective view of the heat insulation case before the surface material sticking which concerns on an Example. It is the front perspective view which notched a part of heat insulation case after the surface material sticking which concerns on an Example. It is the longitudinal cross-sectional view which notched some heat insulation cases after the surface material sticking which concerns on an Example. It is a perspective view of the fastening band which concerns on an Example. It is a top view of the refrigerator unit which concerns on an Example. It is a front view of the refrigerator unit which concerns on an Example. It is a right view of the refrigerator unit which concerns on an Example.

Explanation of symbols

  19 Condenser fan, 30 Heat insulation case, 32, 34, 36 Concave groove, 37 Surface material, 44 Inlet, 46 Outlet, 50 Outlet, 60 Fastening band, 68, 69 Guide plate, 70 Refrigerator unit.

Claims (1)

A base having an opening facing the communication port provided on the top surface of the cooling storage body, and a lower case and an upper case which are disposed so as to cover the opening and accommodate a cooler inside and are attached to the upper surface of the lower case A heat insulating case that is divided into two parts, a fastening band that is formed in a gate shape so as to press down the side surface and the upper surface of the heat insulating case, and for fastening the upper and lower cases, and a compressor that is mounted on the base In the refrigerator unit provided with a refrigeration apparatus comprising a condenser and a condenser fan, etc.
The fastening band on the side on which the compressor and the condenser are placed is provided with a guide plate protruding outward of the heat insulating case,
Forming a groove on the outer surface of the heat insulation case, and forming a flow path of air by the groove and the surface material by sticking a surface material on the outer surface of the heat insulation case so as to cover the groove, A refrigerator unit characterized in that exhaust from the condenser fan is guided into the flow passage through the guide plate.

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