Refrigeration unit

Abstract

The refrigeration device of the present invention is a refrigeration device that utilizes a refrigeration cycle using a refrigerant for cooling, and comprises: an inner door, inside which is arranged a heat insulating material; a box portion, having a peripheral portion opposite to an outer peripheral portion of the inner door when the inner door is closed, and the interior of the box portion is cooled by the refrigerant; a seal, clamped between the outer peripheral portion of the inner door and the peripheral portion when the inner door is closed; piping, arranged along the peripheral portion, for circulation of the refrigerant heated by the compression action of a compressor; and an outer door, covering the inner door when the inner door is closed.

Description

Technical Field

[0001] The present invention relates to a refrigeration device. Background Art

[0002] Conventionally, a refrigeration device having a box portion for cooling an internal space by a refrigeration circuit is used. In such a refrigeration device, an opening leading to the internal space is provided in the box portion, and a freely openable and closable door is installed.

[0003] In such a refrigeration device, the heat insulation of the portion between the opening peripheral edge and the door tends to be poorer than that of other portions. Therefore, condensation or frost is more likely to occur in the portion between the opening peripheral edge and the door than in other portions.

[0004] Patent Document 1 discloses an invention for preventing such condensation or frost. Specifically, Patent Document 1 discloses that a rubber storage is provided around the lower end of the door, and the heat-insulating space formed by the rubber is heated by a heating wire. Thus, condensation or frost can be prevented from occurring around the lower end of the door.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2005-147476. Summary of the invention

[0008] Problem that the invention aims to solve

[0009] According to the storage described in Patent Document 1, there is a possibility that condensation or frost can be prevented around the lower end of the door, that is, around the lower end of the storage opening. However, it is not expected to prevent condensation or frost from forming in parts other than around the lower end of the storage opening.

[0010] In addition, in recent years, refrigeration devices having two doors, an inner door and an outer door, have become popular. In refrigeration devices whose inner door has heat insulation performance, condensation or frost is easily generated in the portion between the opening peripheral portion and the inner door. Therefore, even when the inner door has heat insulation performance, a technology for preventing condensation or frost from being generated around the opening peripheral portion is required.

[0011] An object of the present invention is to provide a refrigeration device capable of preventing condensation or frost from forming around an opening peripheral portion when an inner door has a heat insulating property.

[0012] Solutions to the problem

[0013] The refrigeration device of the present invention includes: a box portion having an opening; an inner door, in which a heat insulating material is arranged inside, and the opening is opened and closed; an outer door, which is arranged in a manner to cover the closed inner door, and the opening is opened and closed; a resin peripheral member, which is arranged in a manner to surround the opening and has a portion opposite to the peripheral portion of the closed inner door and a portion opposite to the peripheral portion of the closed outer door; a sealing member, which seals the peripheral portion of the closed inner door and the peripheral member; and a piping, which is arranged in a manner along the portion of the peripheral member opposite to the inner door, for circulation of a refrigerant heated by the action of a compressor constituting a refrigeration cycle.

[0014] Effects of the Invention

[0015] According to the present invention, when the inner door has a heat insulating property, it is possible to prevent condensation or frost from being generated around the peripheral edge of the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the refrigeration unit.

[0017] Figure 2 It is a three-dimensional view of the refrigeration device in a state where both the outer door and the inner door are opened.

[0018] Figure 3 yes Figure 1 Sectional view taken along line AA.

[0019] Figure 4 yes Figure 3 An enlarged cross-sectional view of region R1.

[0020] Figure 5 yes Figure 3 An enlarged cross-sectional view of region R2.

[0021] Figure 6 This is a side view used to explain the positional relationship between the inner box, seals, and piping of the refrigeration device.

[0022] Figure 7 yes Figure 6 Sectional view at line BB.

[0023] Figure 8 This is a schematic diagram showing the arrangement shape of the pipes when only the pipes are viewed from the rear side of the refrigeration device. DETAILED DESCRIPTION

[0024] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the embodiment described below is an example, and the present invention is not limited to the embodiment.

[0025] Figure 11 is a front view of the refrigeration device 10 according to the embodiment of the present invention. Figure 2 31 is a perspective view of the refrigeration device 10 in a state where both the outer door 31 and the inner door 32 are open. The refrigeration device 10 includes: a device storage portion 11; and a main body 12 disposed above the device storage portion 11. In the following description, the refrigeration device 10 is referred to as Figure 1 The side shown is the front side. In addition, the up and down directions in the following description are the same as Figure 1 Furthermore, the left-right direction is set to be a direction corresponding to the left-right direction when the refrigeration device 10 is viewed from the rear side.

[0026] Various devices and a control unit (not shown) constituting a refrigeration circuit are arranged inside the equipment storage portion 11 .

[0027] The main body 12 includes a box portion 20 and a door 30 installed on the front side of the box portion 20 so as to be freely openable and closable. The door 30 includes an outer door 31 provided on the outside of the refrigeration device 10 and an inner door 32 provided on the inner side of the outer door 31. Figure 2 As shown, the refrigeration device 10 includes two inner doors 32 arranged one above the other.

[0028] like Figure 1 As shown, the outer door 31 is mounted on the box portion 20 via a hinge 33. Figure 2 As shown, the inner door 32 is mounted to the box portion 20 via hinges 34 .

[0029] The outer door 31 is provided with an operation unit 35 for inputting instructions to the refrigeration device 10 and a handle 36. By operating the handle 36, Figure 2 As shown, the outer door 31 is opened. In addition, a seal 40 is attached to the peripheral edge of the opening of the box portion 20 .

[0030] like Figure 2 As shown, the box portion 20 has a cooling chamber R inside and an opening O on the front side leading to the cooling chamber R. The box portion 20 has an inner box portion 21, an outer box portion 22, a first peripheral portion 23 (peripheral portion of the present invention), an intermediate partition 24 (partitioning member of the present invention) and a partition plate 25.

[0031] The first peripheral portion 23 is a portion that connects the inner box portion 21 and the outer box portion 22 and surrounds the opening O. The intermediate partition 24 is a member that is provided at the substantially center of the opening O in the height direction so as to divide the opening O into two in the upper and lower directions. The partition plate 25 is a plate-shaped member that divides the cooling chamber R. Figure 2 In the example shown, only one partition plate 25 is provided; however, a plurality of partition plates 25 may be provided in the cooling chamber R to divide the cooling chamber R into more sections.

[0032] Figure 3 yes Figure 1 A cross-sectional view of the AA line. Moreover, Figure 4 yes Figure 3 The region R1 is an enlarged cross-sectional view of the region R1 of the box portion 20. The region R1 is a region near the upper side of the outer periphery of the opening O of the box portion 20 when the outer door 31 and the inner door 32 are closed.

[0033] The box portion 20 is mainly composed of an inner box 26, an outer box 27, a peripheral member 28, and a heat insulating material 50. The inner box 26 and the outer box 27 are formed of metal plates and / or synthetic resin plates. The peripheral member 28 is formed of a synthetic resin plate. The heat insulating material 50 is formed of a synthetic resin.

[0034] The inner box 26 and the peripheral member 28 are joined by brackets or bolts, etc., which are not shown in the figure. Similarly, the outer box 27 and the peripheral member 28 are joined by brackets or bolts, etc., which are not shown in the figure.

[0035] A reinforcing member 29 (plate member of the present invention) is provided at a corner formed by the peripheral member 28 and the outer box 27 to improve the mechanical strength of the box portion 20. The reinforcing member 29 includes a first flange portion 291 that contacts the peripheral member 28 and has a substantially L-shaped cross-sectional shape, and a second flange portion 292 that contacts the inner side of the outer box 27. The reinforcing member 29 functions as a member that reinforces the curved portion of the outer box 27 and fixes screws (not shown) for connecting the outer box 27 to the peripheral member 28. In addition, if the outer box 27 has a desired strength or the shape of the outer box 27 can be set to a shape that can be fixed to the peripheral member 28 by screws, the reinforcing member 29 may not be provided.

[0036] In the refrigeration device 10, the inner box portion 21 is composed of the inner box 26. In the refrigeration device 10, the outer box portion 22 is composed of the outer box 27 and the second flange portion 292. In the refrigeration device 10, the first peripheral portion 23 is composed of the peripheral member 28 and the first flange portion 291.

[0037] The outer door 31 is made of, for example, a metal plate. On the other hand, the inner door 32 is made of, for example, a heat insulating member and a metal plate surrounding the heat insulating member. That is, in the refrigeration device 10 of the present embodiment, the inner door 32 has a heat insulating property.

[0038] The inner door 32 has a second peripheral portion 321 on the outer peripheral portion which is opposite to the first peripheral portion 23 when closed. In order to improve the sealing performance between the first peripheral portion 23 and the second peripheral portion 321 when the inner door 32 is closed, preferably, the peripheral member 28 has a plane parallel to the second peripheral portion 321. Furthermore, in order to improve the sealing performance between the first peripheral portion 23 and the second peripheral portion 321, a seal 40 is arranged on the peripheral member 28. In addition, the seal 40 can also be arranged on the second peripheral portion 321. In addition, between the outer door 31 and the first peripheral portion 23, a seal 41 is provided which is clamped between the outer door 31 and the first peripheral portion 23 when the outer door 31 is closed.

[0039] A pipe 60 (the pipe of the present invention) is disposed outside the inner box portion 21 and inside the outer box portion 22 so as to be in contact with the rear surface of the peripheral member 28. The pipe 60 will be described in detail later.

[0040] Figure 5 yes Figure 3 The region R2 is an enlarged cross-sectional view of the region R2 of the vehicle body 20. The region R2 is a region near the middle partition 24 when the outer door 31 and the inner door 32 are closed.

[0041] The intermediate partition 24 has a surface formed so that the opening O side is substantially parallel to the vertical direction. A facing member 241 (facing portion of the present invention) is fixed to the surface. The intermediate partition 24 and the facing member 241 are formed of a synthetic resin plate.

[0042] The opposing member 241 is formed in such a manner that the cross section along the vertical direction becomes a shape that is approximately symmetrical in the upper and lower directions. An opposing surface 242 is provided on the upper side of the opposing member 241 so as to be opposed to the second peripheral edge portion 321 of the upper inner door 32, and an opposing surface 243 is provided on the lower side of the opposing member 241 so as to be opposed to the second peripheral edge portion 321 of the lower inner door 32. A protrusion 244 is provided between the opposing surface 242 and the opposing surface 243 of the opposing member 241. In order to improve the sealing performance between the opposing surfaces 242, 243 and the second peripheral edge portion 321, upper and lower seals 40 are arranged in such a manner as to be connected to the protrusion 244 and the opposing surfaces 242, 243, respectively.

[0043] With such a structure, the upper half of the opening O divided by the middle partition 24 is closed by closing the upper inner door 32. Similarly, the lower half of the opening O divided by the middle partition 24 is closed by closing the lower inner door 32.

[0044] The pipes 60 are disposed between the facing surfaces 242 of the intermediate partition 24 and the facing member 241 and between the facing surfaces 243 of the intermediate partition 24 and the facing member 241. In other words, the pipes 60 are disposed in contact with the rear surface of the facing member 241.

[0045] The above describes the structure of the refrigeration device 10 in the region R1 near the upper side of the outer periphery of the opening O of the box portion 20 and in the region R2 near the intermediate partition 24 when the outer door 31 and the inner door 32 are closed. Figure 3 The structure of the refrigeration device 10 in the region R3 near the lower side of the outer periphery of the opening O of the box portion 20 shown in FIG. Figure 4 The structure in the region R1 described above is similar to the structure in which the structure is arranged upside down, so the description is omitted.

[0046] Next, the pipe 60 will be described in detail. The pipe 60 is formed of a metal having a relatively high thermal conductivity, such as copper or aluminum. The pipe 60 is connected to the refrigeration circuit of the refrigeration device 10, and the refrigerant heated by the compression action of the compressor included in the refrigeration circuit circulates.

[0047] Figure 6 This is a side view for explaining the positional relationship among the inner box 26 , the first peripheral portion 23 (peripheral member 28 ), and the pipe 60 of the refrigeration device 10 . Figure 6 , the refrigeration device 10 is viewed from the left side with the outer box 27, the door 30, and the device storage section 11 removed from the refrigeration device 10. Figure 7 yes Figure 6 The sectional view at the BB line. That is, Figure 7 FIG. 2 shows a state where the first peripheral portion 23 and the intermediate partition 24 are viewed from the rear side of the refrigeration device 10 . Figure 8 It means Figure 7 This is a schematic diagram of the arrangement shape of the pipes 60 when only the pipes 60 are viewed from the same viewpoint, that is, from the rear side of the refrigeration device 10 . Figure 8 In FIG. 1 , the thickness of the pipe 60 is emphasized.

[0048] like Figure 7 and Figure 8 As shown, the pipe 60 is provided on the rear side of the peripheral member 28 (see FIG. 1 ) in a manner that covers the outer periphery of the opening O and substantially the entire intermediate partition 24. Figure 4 ) and between the intermediate partition 24 and the opposing member 241 (refer to Figure 5 ) and is arranged in such a way that it becomes a pattern drawn with one stroke.

[0049] In particular, the pipe 60 is arranged in two layers, one above the other, at the portion of the middle partition 24. Since cold air is transferred from the two upper and lower openings divided by the middle partition 24 around the opening O, it is easier to cool than the vicinity of the outer periphery of the opening O. In the refrigeration device 10 of the present embodiment, by arranging the pipe 60 in two layers, one above the other, at the portion of the middle partition 24, more heat is supplied by the pipe 60 than the vicinity of the outer periphery of the opening O. Therefore, condensation or ice formation around the middle partition 24 can be effectively prevented.

[0050] In the refrigeration device 10 configured as described above, when the refrigeration circuit is operated, the interior of the cooling chamber R is cooled.

[0051] At this time, the temperature inside the cooling chamber R is lower than the ambient air temperature. Figure 3 , Figure 4 and Figure 5 The periphery of the opening O shown in the figure, specifically, one or more of the first peripheral portion 23, a portion of the outer box portion 22, the middle partition 24, the seal 40, and the second peripheral portion 321 of the inner door 32 may be lower than the ambient air temperature. Condensation and frost may occur in the portion lower than the ambient air temperature.

[0052] However, if Figure 7 and Figure 8 As shown, the refrigeration device 10 of the present embodiment has a pipe 60 arranged in a manner surrounding the first peripheral portion 23 and the intermediate partition 24, and when the refrigeration circuit is working, the heated refrigerant circulates in the pipe 60. Thus, the periphery of the first peripheral portion 23 (peripheral member 28) and the opposing member 241 of the intermediate partition 24 is heated by the heated refrigerant circulating in the pipe 60. Therefore, even if the outside air contacts the portion between the first peripheral portion 23 and the inner door 32, the generation of condensation or ice can be suppressed. In addition, the configuration position of the pipe 60 is a position that does not interfere with the outer door 31, and therefore, the generation of condensation or ice at the portion between the first peripheral portion 23 and the inner door 32 can be suppressed regardless of the opening and closing state of the outer door 31.

[0053] Furthermore, the pipe 60 is not in direct contact with the metal reinforcing member 29 provided on the outer box 27 side, but is connected via the peripheral member 28 formed of a synthetic resin plate. Therefore, it is possible to prevent the heat of the pipe 60 from being directly transferred to the reinforcing member 29 having high thermal conductivity, thereby preventing the heat from leaking to the outside of the outer box 27. That is, the heat is effectively transferred to the portion between the first peripheral portion 23 and the inner door 32, and the generation of condensation or ice in this portion can be effectively suppressed.

[0054] like Figure 4As shown in the figures, the piping 60 is arranged at a position substantially the same as the upper edge of the seal 40 in the vertical direction. Also, in the portion below the opening O, the piping 60 is arranged at a position substantially the same as the lower edge of the seal 40 in the vertical direction. In addition, in the portion to the right of the opening O, the piping 60 is arranged at a position substantially the same as the right edge of the seal 40 in the left-right direction. In addition, in the portion to the left of the opening O, the piping 60 is arranged at a position substantially the same as the left edge of the seal 40 in the left-right direction. That is, in the vicinity of the first peripheral portion 23, the piping 60 is arranged at a position substantially overlapping with the outer peripheral edge of the seal 40 when the refrigeration device 10 is viewed from the front.

[0055] Likewise, if Figure 5 As shown in FIGS. 1 and 2 , around the intermediate partition 24 , the pipe 60 is also arranged at a position substantially overlapping the outer peripheral edge of the seal 40 when the refrigeration device 10 is viewed from the front.

[0056] With such a structure, the pipe 60 can effectively transfer heat to the peripheral portion of the outer periphery of the first peripheral edge portion 23 where condensation or icing is likely to occur.

[0057] As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It can be implemented with appropriate deformation|transformation within the range which does not deviate from the summary of this invention.

[0058] In the above embodiment, the case where the number of inner doors 32 is two is described, but the present invention is not limited thereto. The number of inner doors may be greater, and in this case, the number of intermediate partitions can be increased to cope with the situation.

[0059] The disclosure of Japanese Patent Application No. 2019-228074 filed on December 18, 2019, including the specification, claims, drawings, and abstract, is incorporated herein by reference in its entirety.

[0060] Industrial Applicability

[0061] According to the present invention, a refrigeration device capable of preventing dew condensation and frost from forming at the periphery of the opening and the periphery of the intermediate partition can be provided. Therefore, the industrial applicability thereof is great.

[0062] Description of Reference Numerals

[0063] 10 Refrigeration unit

[0064] 11 Machine storage area

[0065] 12 Main Body

[0066] 20 Box Department

[0067] 21 Inner box

[0068] 22 Outer box department

[0069] 23 First peripheral part

[0070] 24 Middle divider

[0071] 241 Opposing Components

[0072] 242, 243 Opposite surface

[0073] 244 protrusion

[0074] 25 Partition

[0075] 26 Inner box

[0076] 27 outer box

[0077] 28 Peripheral components

[0078] 29 Reinforcement

[0079] 291 First flange

[0080] 292 Second flange

[0081] 30 doors

[0082] 31 Outer Gate

[0083] 32 Inner Door

[0084] 321 Second peripheral part

[0085] 33 Hinge

[0086] 34 Hinge

[0087] 35 Operation Department

[0088] 36 Handle

[0089] 40 Seals

[0090] 41 Seals

[0091] 50 Insulation Materials

[0092] 60 Piping.

Claims

1. A refrigeration device, comprising: a box portion having an opening; An inner door, inside of which a heat-insulating material is disposed, for opening and closing the opening; An outer door is arranged in a manner to cover the closed inner door, and performs opening and closing of the opening; a peripheral member made of resin, arranged so as to surround the opening, and having a portion facing the peripheral portion of the closed inner door and a portion facing the peripheral portion of the closed outer door; a sealing member for sealing between the peripheral edge portion of the closed inner door and the peripheral member; and The pipe is arranged along the portion of the peripheral member facing the inner door, and circulates the refrigerant heated by the action of the compressor constituting the refrigeration cycle. The pipe is disposed on the inner surface of a portion of the peripheral member facing the peripheral portion of the inner door so as to overlap with the outer peripheral edge of the seal when viewed from the front.

2. The refrigeration device according to claim 1, wherein: The box portion includes an inner box portion and an outer box portion covering the inner box portion. The refrigeration device further includes a metal plate member that connects a portion of the peripheral member that faces the peripheral portion of the outer door and the outer box portion.

3. The refrigeration device according to claim 2, wherein: The peripheral member has a portion connecting a portion facing the peripheral portion of the inner door and a portion facing the peripheral portion of the outer door. A portion connecting a portion facing the peripheral edge of the inner door and a portion facing the peripheral edge of the outer door extends in a direction away from the pipe.

4. The refrigeration device according to claim 3, wherein: The metal plate member has: a first flange portion having a substantially L-shaped cross-sectional shape, the first flange portion being composed of a portion along the peripheral member that is opposite to the peripheral portion of the outer door, and a portion along the peripheral member that connects a portion opposite to the peripheral portion of the inner door and a portion opposite to the peripheral portion of the outer door; and A second flange portion is connected to the outer box portion.

5. The refrigeration device according to any one of claims 1 to 4, wherein: The inner door is provided with a plurality of The refrigeration device further includes a partition member, which is arranged so as to partition the opening and has an opposing portion that faces the peripheral edge of the closed inner door. The sealing member seals the space between the peripheral edge of the closed inner door and the opposing portion. The pipe is arranged along the facing portion.

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