Filling piece and freezing device

Abstract

The packing material is an annular packing material which is clamped between a box part forming a refrigeration device and a door for closing an opening part of the box part, and is provided with a main body part which is fixed on the box part in a manner of surrounding the opening part, and the main body part comprises a plurality of sealing parts which abut against a door side bearing part arranged on the door when the door is in a closed state. Each of the plurality of seal portions is in a ring shape along the opening portion and is arranged adjacent to each other, and the height of an outer seal portion, which is the outermost seal portion among the plurality of seal portions, is higher than the height of the other seal portions.

Description

Technical Field

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

[0002] Conventionally, there is known a refrigeration device including a box portion including a storage chamber, as disclosed in Patent Document 1. Such a refrigeration device includes an openable and closable door for closing an opening of the box portion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2007-151001 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] However, in the above-mentioned refrigeration device, condensation or frost may sometimes occur around the opening of the box and between the door. Such frost tends to spread from the inside to the outside. It is desirable to suppress the spread of such frost.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a packing and a refrigeration device capable of suppressing the spread of frost.

[0009] Solutions to the problem

[0010] One embodiment of the packing of the present invention is an annular packing sandwiched between a box portion constituting a refrigeration device and a door closing an opening of the box portion.

[0011] It has a main body fixed to the box so as to surround the opening.

[0012] The main body includes a plurality of sealing parts that abut against a door-side receiving part provided on the door when the door is closed. The plurality of sealing parts are respectively annular along the opening and are arranged adjacent to each other.

[0013] The outermost sealing portion among the plurality of sealing portions has a height higher than that of the other sealing portions.

[0014] One embodiment of the refrigeration device of the present invention comprises:

[0015] A box portion having a receiving chamber;

[0016] an openable and closable door that closes the opening of the storage chamber; and

[0017] The above-mentioned packing member fixed on the box part.

[0018] Effects of the Invention

[0019] According to the present invention, a packing and a refrigeration device capable of suppressing the spread of frost can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a perspective view of the refrigeration device according to the embodiment of the present invention.

[0021] Figure 2 It is the front view of the filling piece.

[0022] Figure 3 yes Figure 2 A1 view.

[0023] Figure 4 yes Figure 2 C1-C1 cross-sectional view.

[0024] Figure 5 It is a cross-sectional view showing the state of the packing and the door buffer when the door is closed. DETAILED DESCRIPTION

[0025] The packing and the refrigeration device of the present invention will be described below with reference to the accompanying drawings. It should be noted that the same reference numerals are used for the same components. Figure 1 The matters described together are matters for explaining exemplary embodiments, and are not matters for indicating the only embodiments.

[0026] [Implementation Method]

[0027] Reference Figure 1 to Figure 4 , a packing and a refrigeration device according to an embodiment of the present invention are described.

[0028] Figure 1 This is a perspective view of a refrigeration device 1 according to an embodiment of the present invention. The refrigeration device 1 is, for example, an ultra-low temperature freezer. An ultra-low temperature freezer is a freezer that cools the interior of a refrigerator to an ultra-low temperature (for example, about -80°C). In addition, the refrigeration device 1 may also be a medicine cold storage, a blood cold storage, or a thermostat.

[0029] In addition, when describing the structure of the refrigeration device 1 and the components constituting the refrigeration device 1, the orthogonal coordinate system (X, Y, Z) shown in each figure is used. The X direction coincides with the front-to-back direction of the refrigeration device 1. The + side of the X direction coincides with the front side of the refrigeration device 1. The - side of the X direction coincides with the rear side of the refrigeration device 1.

[0030] In addition, the Y direction is consistent with the left-right direction of the freezing device 1 and the width direction of the freezing device 1. The + side of the Y direction is consistent with the left side when the freezing device 1 is observed from the front of the freezing device 1. The - side of the Y direction is consistent with the right side when the freezing device 1 is observed from the front of the freezing device 1. The Z direction is consistent with the up-down direction of the freezing device 1. The + side of the Z direction is consistent with the upper side of the freezing device 1. The - side of the Z direction is consistent with the lower side of the freezing device 1.

[0031] Hereinafter, a basic structure of the refrigeration device 1 will be briefly described. The refrigeration device 1 of the present embodiment includes a main body 12 and a mechanical part 20 .

[0032] The main body 12 is box-shaped. A heat insulating material (not shown) is disposed inside the wall constituting the main body 12. The main body 12 includes a box 13, an outer door 16, an inner door 17, and a handle 18.

[0033] The box portion 13 includes an inner box 14 and an outer box 15 .

[0034] The inner box 14 is formed of, for example, a metal plate and / or a synthetic resin plate. The inner box 14 is composed of a box-shaped member having an opening at the front surface.

[0035] The inner box 14 has a storage chamber 140. The storage chamber 140 is divided into a plurality of (two in this embodiment) partition storage chambers 142A and 142B by a partition plate 141. In this embodiment, the storage chamber 140 is divided into an upper partition storage chamber 142A and a lower partition storage chamber 142B by a partition plate 141. The partition storage chambers 142A and 142B each have an opening on the front surface.

[0036] In addition, the number of partitions is not limited to the number of partitions 141 in the present embodiment. That is, the number of partitioned storage chambers is not limited to the number of partitioned storage chambers 142A and 142B in the present embodiment. In addition, the partitions may be omitted.

[0037] The outer box 15 is made of, for example, a metal plate and / or a synthetic resin plate. The outer box 15 is made of a box-shaped member that is open at the front surface. The outer box 15 is made of a box-shaped member that is larger than the inner box 14. The inner box 14 is accommodated in the outer box 15.

[0038] The outer door 16 is mounted on the box portion 13 by means of a hinge (not shown) in a state in which the opening of the outer box 15 can be opened and closed (i.e., opened or closed). When the outer door 16 closes the opening of the outer box 15 (hereinafter, also referred to as "the closed state of the outer door 16"), the outer box 15 becomes a sealed state. A heat insulating material (not shown) is arranged inside the outer door 16. In addition, hereinafter, the state in which the outer door 16 is opened is also referred to as "the open state of the outer door 16".

[0039] The inner door 17 is provided at a position closer to the inner side than the outer door 16. In addition, unless otherwise specified, the inner side refers to a side closer to the inner box 14 and the outer box 15 when the outer door 16 and the inner door 17 are closed. In addition, unless otherwise specified, the outer side refers to a side farther from the inner box 14 and the outer box 15 when the outer door 16 and the inner door 17 are closed.

[0040] The inner door 17 is attached to the box portion 13 via a hinge 19 so as to be able to open and close openings 142a and 142b that partition the storage chambers 142A and 142B of the inner box 14. The openings 142a and 142b each correspond to an example of an opening of the box portion.

[0041] In the present embodiment, the inner door 17 includes an upper inner door 17a and a lower inner door 17b. The upper inner door 17a is configured to be able to open and close an opening 142a that partitions the upper storage chamber 142A.

[0042] When the upper inner door 17a and the lower inner door 17b are closed, their rear sides face the partitioned storage chambers 142A and 142B, respectively.

[0043] Hereinafter, the state in which the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is closed is referred to as the "closed state of the inner door 17". In addition, the state in which the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is opened is referred to as the "opened state of the inner door 17".

[0044] The upper inner door 17a and the lower inner door 17b respectively have door side covers 170a and 170b which are opposite to the openings 142a and 142b of the partition storage chambers 142A and 142B respectively when closed. The door side covers 170a and 170b are rectangular in shape and have approximately the same area as the openings 142a and 142b of the partition storage chambers 142A and 142B.

[0045] The upper inner door 17a and the lower inner door 17b have door side frame-shaped areas 171a and 171b around the door side cover parts 170a and 170b, respectively. The door side frame-shaped areas 171a and 171b are rectangular frame-shaped areas surrounding the door side cover parts 170a and 170b.

[0046] The door side frame-shaped regions 171a and 171b are regions that face inner box side frame-shaped regions 143a and 143b described later in a predetermined direction (in the front-rear direction in the present embodiment) when the inner door 17 is in a closed state.

[0047] In addition, the upper inner door 17a and the lower inner door 17b have rectangular frame-shaped door side buffers 173 and 174 along the door side frame-shaped areas 171a and 171b, respectively. The door side buffers 173 and 174 are equivalent to an example of a door side receiving portion. The door side buffers 173 and 174 are portions that abut against the sealing portion 300 of the packing 3 described later when the inner door 17 is in the closed state.

[0048] Here, refer to Figure 1 and Figure 5 The door side buffer 173 will be described. The structure of the door side buffer 174 is the same as that of the door side buffer 173. Therefore, regarding the door side buffer 174, it is sufficient to read the description of the door side buffer 173 as the description of the door side buffer 174 as appropriate.

[0049] The door-side buffer 173 is in a rectangular frame shape and is fixed to the door-side frame-shaped region 171a of the upper inner door 17a. The door-side buffer 173 has a door-side receiving surface 173a on the front side.

[0050] The door-side receiving surface 173 a is a rectangular frame-shaped surface, and has a frame-shaped flat surface portion 173 b and a frame-shaped recessed portion 173 c .

[0051] The frame-shaped plane portion 173b is composed of a frame-shaped plane provided in the region from the inner end to the middle portion of the door-side receiving surface 173a. The frame-shaped plane portion 173b is a portion that contacts the first sealing portion 301 and the second sealing portion 302 of the packing 3 described later when the inner door 17 is closed (see Figure 5 ).

[0052] The frame-shaped recessed portion 173c is formed by a frame-shaped concave curved surface provided at the outer end of the door-side bearing surface 173a. In other words, the frame-shaped recessed portion 173c is arranged further back than the frame-shaped flat surface portion 173b. The frame-shaped recessed portion 173c surrounds the frame-shaped flat surface portion 173b over the entire circumference. The frame-shaped recessed portion 173c is a portion that contacts the third sealing portion 303 of the packing 3 described later when the inner door 17 is closed (see Figure 5 ).

[0053] The handle 18 is for a user to hold when opening or closing the outer door 16 .

[0054] The mechanical part 20 is arranged directly below the main body 12. The mechanical part 20 accommodates a compressor (not shown), a condenser (not shown), and a pressure reducer (not shown) constituting a refrigeration circuit (not shown) capable of cooling the storage chamber 140 (specifically, the partitioned storage chambers 142A and 142B) to below -80°C.

[0055] An evaporator (not shown) constituting a refrigeration circuit is disposed in a side wall of the main body 12. The inside of the storage chamber 140 (specifically, the partitioned storage chambers 142A and 142B) is cooled by the operation of the refrigeration circuit.

[0056] The refrigeration device 1 of the present embodiment having the above-described structure includes the packing 3 sandwiched between the inner box 14 and the inner door 17 of the box portion 13 .

[0057] Next, the structure and arrangement of the packing 3 will be described.

[0058] The packing 3 is provided in a rectangular frame-shaped region (hereinafter also referred to as "inner box side frame-shaped regions 143a, 143b") surrounding the openings 142a, 142b that partition the storage chambers 142A, 142B in the inner box 14.

[0059] The inner box side frame-shaped areas 143a and 143b are respectively formed by annular (specifically, rectangular frame-shaped) surfaces facing forward. The shapes of the inner box side frame-shaped areas 143a and 143b can be the shapes of the outer shapes when viewed from the front along the openings 142a and 142b that separate the storage chambers 142A and 142B. In addition, viewing from the front means viewing the refrigeration device 1 from the front. Figure 2 This corresponds to the front view of the packing 3.

[0060] The inner box side frame-shaped area 143a is an area surrounding the upper partition storage chamber 142A. The inner box side frame-shaped area 143a is composed of the front surface of the upper half of the inner box 14 and the front surface of the partition plate 141. In addition, the inner box side frame-shaped area 143a can also be composed of a frame-shaped member (not shown) fixed to the inner box 14 and the partition plate 141.

[0061] The inner box side frame-shaped area 143b is an area surrounding the partition storage chamber 142B on the lower side. The inner box side frame-shaped area 143b is composed of the front surface of the lower half of the inner box 14 and the front surface of the partition plate 141. In addition, the inner box side frame-shaped area 143b can also be composed of a frame-shaped member (not shown) fixed to the inner box 14 and the partition plate 141.

[0062] In the present embodiment, packings 3 are provided in the inner box side frame-shaped regions 143a and 143b, respectively. The structure of the packing 3 provided in the inner box side frame-shaped region 143a will be described below. The structure of the packing 3 provided in the inner box side frame-shaped region 143b is the same as the structure of the packing 3 provided in the inner box side frame-shaped region 143a.

[0063] like Figure 4 and Figure 5As shown in the figure, the packing 3 has a main body 30 and a stopper 31. The entire packing 3 is made of an elastic material (such as rubber or resin). However, the packing 3 can also be made by combining a component made of a metal and a component made of an elastic material. In this case, at least the sealing portion 300 described later can be made of an elastic material.

[0064] The main body 30 has a rectangular frame shape along the inner box side frame-shaped region 143a. The main body 30 has a sealing portion 300. The sealing portion 300 is a portion that contacts the door-side buffer 173 provided on the upper inner door 17a when the upper inner door 17a is closed.

[0065] The sealing portion 300 includes a first sealing portion 301 , a second sealing portion 302 , and a third sealing portion 303 in order from the inner side.

[0066] In the following, unless otherwise specified, the inner side refers to the area close to the center O1 of the packing 3 when viewed from the front (see Figure 2 ) side. In addition, unless otherwise specified, the outer side refers to the side away from the center O1 of the packing 3 when viewed from the front.

[0067] The packing 3 and the components of the packing 3 are in a rectangular frame shape, and have an upper side 33a, a lower side 33b, a left side 33c, and a right side 33d.

[0068] In the upper side 33a, the inner side is consistent with the lower side. In the upper side 33a, the outer side is consistent with the upper side. In the lower side 33b, the inner side is consistent with the upper side. In the lower side 33b, the outer side is consistent with the lower side. In the left side 33c, the inner side is consistent with the right side. In the left side 33c, the outer side is consistent with the left side. In the right side 33d, the inner side is consistent with the left side. In the right side 33d, the outer side is consistent with the right side.

[0069] Figure 4 yes Figure 2 Therefore, Figure 4 It is a cross-sectional view of the right side 33d of the packing 3. Figure 4 The left side of the picture is consistent with the inner side. Figure 4 The right side in the middle is consistent with the outside.

[0070] Figure 5 It is a cross-sectional view showing the state of the packing 3 and the door buffer 173 when the inner door 17 (specifically, the upper inner door 17a and the lower inner door 17b) is in a closed state.

[0071] The first sealing portion 301 corresponds to an example of other sealing portions, and is a sealing portion provided on the innermost side of the sealing portion 300. The first sealing portion 301 has a rectangular frame shape along the inner box side frame-shaped region 143a.

[0072] The first sealing part 301 is hollow throughout its entire length. The first sealing part 301 is also a convex strip component with a curved top end. The top end surface of the first sealing part 301 is a smooth curved surface. The height dimension of the first sealing part 301 is a predetermined height dimension H. 301 .

[0073] When the inner door 17 is closed, the first sealing portion 301 abuts against the door side buffer 173 (specifically, the frame-shaped plane portion 173b) of the upper inner door 17a over the entire circumference. When the inner door 17 is closed, the first sealing portion 301 is flattened by the frame-shaped plane portion 173b of the door side buffer 173 to a predetermined amount.

[0074] The second seal portion 302 corresponds to an example of another seal portion, and is provided in the middle portion (central portion in this embodiment) of the seal portion 300. The second seal portion 302 has a rectangular frame shape along the inner box side frame-shaped region 143a.

[0075] The second sealing part 302 is hollow throughout its entire length. The second sealing part 302 is also a convex strip component with a curved top end. The top end surface of the second sealing part 302 is a smooth curved surface. The height dimension of the second sealing part 302 is a predetermined height dimension H. 302 .

[0076] The height dimension H of the second sealing portion 302 302 The height dimension H of the first sealing portion 301 is 301 Same or approximately the same (H 302 =H 301 or H 302 ≈H 301 ). Such a structure can stabilize the sealing performance of the first sealing part 301 and the second sealing part 302. In addition, the height dimension H of the second sealing part 302 is 302 It may be larger than the height dimension H of the first sealing portion 301. 301 big.

[0077] The appearance of the second sealing portion 302 when viewed from the front ( Figure 2 The outer shape of the second sealing portion 302 in FIG. 3 is larger than the outer shape of the first sealing portion 301 when viewed from the front ( Figure 2 The first sealing portion 301 in the embodiment has a large outer shape.

[0078] On a plane (YZ plane) parallel to the left-right direction and parallel to the up-down direction, the second sealing portion 302 surrounds the first sealing portion 301. When the inner door 17 is closed, the second sealing portion 302 abuts against the door side buffer 173 (specifically, the frame-shaped plane portion 173b) of the upper inner door 17a over the entire circumference. When the inner door 17 is closed, the second sealing portion 302 is flattened by the frame-shaped plane portion 173b of the door side buffer 173 and the amount of flattening is a predetermined amount.

[0079] The third seal portion 303 corresponds to an example of an outer seal portion, and is a seal portion provided on the outermost side of the seal portion 300. The third seal portion 303 has a rectangular frame shape along the inner box side frame-shaped region 143a.

[0080] The third sealing part 303 is hollow throughout its entire length. The third sealing part 303 is also a convex strip component with a curved top end. The top end surface of the third sealing part 303 is a smooth curved surface. The height dimension of the third sealing part 303 is a predetermined height dimension H. 303 .

[0081] The height dimension H of the third sealing portion 303 303 The height dimension H of the first sealing portion 301 is 301 and the height dimension H of the second sealing portion 302 302 Large (H 303 >H 302 , H 303 >H 301 The appearance of the third sealing portion 303 when viewed from the front ( Figure 2 The appearance of the third sealing portion 303 in FIG. 1 is larger than the appearance of the second sealing portion 302 when viewed from the front ( Figure 2 The outer shape of the second sealing portion 302 is large.

[0082] On a plane (YZ plane) parallel to the left-right direction and parallel to the up-down direction, the third sealing portion 303 surrounds the second sealing portion 302. When the inner door 17 is closed, the third sealing portion 303 abuts against the door-side buffer 173 (specifically, the frame-shaped recessed portion 173c) of the upper inner door 17a over the entire circumference. The third sealing portion 303 is slightly elastically deformed in a compressed manner when the third sealing portion 303 abuts against the door-side buffer 173 (specifically, the frame-shaped recessed portion 173c).

[0083] In addition, Figure 5 In the embodiment, the third sealing portion 303 abuts against the frame-shaped recessed portion 173c of the door-side buffer 173. In the present embodiment, the frame-shaped recessed portion 173c is formed by a concave curved surface disposed further rearward than the frame-shaped flat surface portion 173b in the door-side buffer 173. Such a structure helps to improve the sealing effect by the abutment between the third sealing portion 303 and the frame-shaped recessed portion 173c.

[0084] Alternatively, the door side buffer member 173 (see Figure 1 ) is composed of a flat surface, and the parts of the flat surface that abut against the first sealing part 301, the second sealing part 302, and the third sealing part 303 are all located on the same plane.

[0085] As described above, in this embodiment, when the inner door 17 is closed, the first sealing portion 301, the second sealing portion 302 and the third sealing portion 303 are respectively in contact with the door side buffer 173 of the upper inner door 17a. Such a structure helps to improve the sealing performance of the partitioned storage chamber 142A when the inner door 17 is closed.

[0086] The third sealing portion 303 has a frost-proof wall portion 303a on the inner side surface of the tip portion. The frost-proof wall portion 303a protrudes in a predetermined direction (in this embodiment, forward) from the first sealing portion 301 and the second sealing portion 302.

[0087] In the closed state of the inner door 17, the predetermined direction is the side of the door side buffer 173 close to the upper inner door 17a. Figure 4 The frost-proof wall portion 303a functions as a dam to prevent frost from spreading in the direction indicated by the arrow A2.

[0088] In other words, the frost-preventing wall portion 303a serves as a barrier to frost that spreads from the inside to the outside on the top end surface of the sealing portion 300. Such a structure of the third sealing portion 303 contributes to suppressing the spread of frost.

[0089] In addition, the central axis L1 of the third sealing portion 303, which is the central axis of the cross-sectional shape (hereinafter simply referred to as "cross-sectional shape") when the third sealing portion 303 is cut along a plane orthogonal to the extending direction of the third sealing portion 303, is curved so as to approach the outside as it approaches from the base end portion (the rear end portion in the present embodiment) to the top end portion (the front end portion in the present embodiment). The cross-sectional shape of the third sealing portion 303 is inclined (in other words, curved) along the central axis L1.

[0090] The locking portion 31 is a member for locking the packing 3 on the inner box side frame-shaped area 143a. The locking portion 31 is in a rectangular frame shape and is provided on the surface (the rear surface in this embodiment) opposite to the inner box side frame-shaped area 143a in the main body 30. Such a locking portion 31 is engaged with a locked portion (not shown) provided on the inner box side frame-shaped area 143a.

[0091] In addition, the refrigeration device 1 of this embodiment has a heater unit 4 (see Figure 4 The heater unit 4 is provided in the inner box 14. The heater unit 4 has a rectangular frame shape along the inner box side frame-shaped regions 143a and 143b of the inner box 14. The heater unit 4 is provided at a position corresponding to the inner box side frame-shaped regions 143a and 143b.

[0092] In addition, if Figure 4 As shown, the heater unit 4 is arranged at a position further outward than the third sealing portion 303. By arranging the heater unit 4 in this way, the influence of the heat of the heater unit 4 on the first sealing portion 301 and the second sealing portion 302 can be reduced. Therefore, the influence of the heat of the heater unit 4 on the partition storage chambers 142A and 142B can be reduced. As a result, the temperature rise in the partition storage chambers 142A and 142B caused by the heat of the heater unit 4 can be suppressed.

[0093] The heater unit 4 always heats the third sealing portion 303. Alternatively, the heater unit 4 may heat the third sealing portion 303 at an appropriate timing. The operation of the heater unit 4 is controlled by a control unit (not shown).

[0094] (Functions and Effects of the Present Embodiment)

[0095] As described above, the refrigeration device 1 of this embodiment includes the packing 3 having the above-mentioned structure. Figure 4 The frost-proof wall portion 303a of the third sealing portion 303 functions as a weir to prevent the frost from spreading (in the direction indicated by the arrow A2). As a result, the refrigeration device 1 of this embodiment can suppress the spread of frost.

[0096] In addition, the refrigeration device 1 of this embodiment includes a heater unit 4 for heating the third sealing portion 303. The third sealing portion 303 can be kept at a relatively high temperature by being heated by the heater unit 4. When frost contacts the third sealing portion 303, the frost can be melted based on the temperature of the third sealing portion 303. As a result, the third sealing portion 303 can more effectively suppress the spread of frost.

[0097] As described above, in this embodiment, the spread of frost can be more effectively suppressed by utilizing the synergistic effect of the frost suppression effect brought about by the frost-proof wall portion 303a of the third sealing portion 303 and the frost suppression effect brought about by the heater portion 4. Other functions and effects obtained by the structure of the packing 3 and the refrigeration device 1 of this embodiment are as described above.

[0098] [Notes]

[0099] When implementing the present invention, the structure of the packing is not limited to the structure of the packing 3 in the above embodiment. For example, the packing only needs to have at least two sealing parts. That is, the number of sealing parts of the packing can be two or more than four.

[0100] In addition, the structure of the outer sealing portion of the packing (the third sealing portion 303 in the above embodiment) is not limited to the structure of the third sealing portion 303 in the above embodiment. For example, the shape of the outer sealing portion of the packing can be various shapes that are higher than the other sealing portions (the first sealing portion 301 and the second sealing portion 302 in the above embodiment).

[0101] In addition, in the above-mentioned embodiment, the outer door 16 and the inner door 17 are arranged to be able to open and close the opening on the front side of the box portion 13. However, the positions of the outer door 16 and the inner door 17 are not limited to the case of the above-mentioned embodiment. For example, the outer door and the inner door may also be arranged to be able to open and close the opening on the upper side of the box portion. In this case, the packing is clamped between the box portion and the door that closes the opening on the upper side of the box portion. Regarding the structure of such a packing, it is sufficient to appropriately read the description of the packing 3 in the above-mentioned embodiment as a description of the packing and understand it.

[0102] The disclosure contents of the specification, drawings and abstract contained in Japanese patent application No. 2022-189100 filed on November 28, 2022 are incorporated herein by reference in their entirety.

[0103] Industrial Applicability

[0104] The present invention can be suitably applied to various refrigeration devices.

[0105] Description of Reference Numerals

[0106] 1 Refrigeration unit

[0107] 12 Main body

[0108] 13 Box

[0109] 14 Inner box

[0110] 140 Accommodation Room

[0111] 141 Partition

[0112] 142A, 142B Separated Storage Chamber

[0113] 142a, 142b opening

[0114] 143a, 143b Inner box side frame area

[0115] 15 outer box

[0116] 16 Outer Door

[0117] 17 Inner Door

[0118] 17a Upper inner door

[0119] 17b Lower inner door

[0120] 170a, 170b Door side cover

[0121] 171a, 171b Door side frame area

[0122] 173, 174 Door side buffer

[0123] 173a Door side bearing surface

[0124] 173b Frame-shaped flat surface portion

[0125] 173c Frame-shaped recess

[0126] 18 Handle

[0127] 19 Hinge

[0128] 20 Mechanical Department

[0129] 3 Filling

[0130] 30 Main body

[0131] 300 Sealing part

[0132] 301 First sealing part

[0133] 302 Second sealing part

[0134] 303 Third sealing part

[0135] 303a Frost protection wall

[0136] 31. Stopper

[0137] 33a Top

[0138] 33b bottom

[0139] 33c Left

[0140] 33d Right

[0141] 4 Heater section.

Claims

1. A packing, which is an annular packing held between a box portion constituting a refrigeration device and a door closing an opening of the box portion, wherein the packing is characterized in that: A main body portion is fixed to the box portion so as to surround the opening portion. The main body includes a plurality of sealing portions that abut against a door-side receiving portion provided on the door when the door is in a closed state, and the plurality of sealing portions are respectively annular along the opening and arranged adjacent to each other. The outermost sealing portion among the plurality of sealing portions has a height higher than that of the other sealing portions.

2. The packing according to claim 1, wherein: When the door is in a closed state, the plurality of sealing portions abut against the door-side receiving portion in the front-rear direction.

3. The packing according to claim 1, wherein: The other sealing parts have the same height.

4. The packing according to claim 1, wherein: The outer sealing portion is inclined so as to be closer to the outer side as it approaches the top end. The outer sealing portion has a frost-proof wall portion on an inner side surface, and the frost-proof wall portion functions as a dam for frost spreading from the inner side to the outer side.

5. A refrigeration device, characterized in that: have: A box portion having a receiving chamber; an openable and closable door that closes the opening of the storage chamber; and The packing according to claim 1 fixed to the box portion.

6. The freezing device according to claim 5, wherein: A heater portion is further provided, the heater portion being provided in the box portion and heating the outer sealing portion of the packing.

7. The freezing device according to claim 5, wherein: A door-side receiving portion is further provided, the door-side receiving portion being fixed to the door and being in contact with the sealing portion of the packing when the door is in a closed state. The door side receiving portion comprises: a frame-shaped flat surface portion that abuts against the other sealing portion when the door is in a closed state; and A frame-shaped recessed portion abuts against the outer sealing portion when the door is in a closed state and is arranged at a position farther from the box portion than the frame-shaped flat surface portion when the door is in a closed state.

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