Constant temperature device

Abstract

This constant temperature device comprises: a box part that has a storage chamber opening in a first direction, and an annular first slope that surrounds the storage chamber and is inclined such that the inner edge thereof is positioned on the first direction side relative to the outer edge; a door part that has an annular second slope facing the first slope and closes the opening of the storage chamber; and a packing that is disposed along the first slope and is sandwiched between the first slope and the second slope.

Description

Constant temperature device

[0001] This invention relates to a constant temperature device.

[0002] Conventionally, as an example of a constant temperature device, a refrigeration device having a storage compartment, such as the one disclosed in Patent Document 1, is known. Such a constant temperature device has a box section containing a storage compartment and a door section that closes the opening of the storage compartment. Furthermore, the constant temperature device has a gasket between the box section and the door section for sealing the storage compartment.

[0003] Special Republished Gazette WO11 / 1358637

[0004] Incidentally, the gaskets mentioned above require high sealing performance from the standpoint of improving the airtightness of the storage compartment.

[0005] This invention has been made in view of these circumstances, and aims to provide a constant temperature device that can improve the airtightness of a storage compartment.

[0006] One embodiment of the constant temperature device according to the present invention comprises a box portion having a storage compartment that opens in a first direction, and an annular first inclined surface surrounding the storage compartment, the inner edge of which is inclined such that it is located on the first direction side of the outer edge, and a door portion having an annular second inclined surface facing the first inclined surface and closing the opening of the storage compartment, and a packing arranged along the first inclined surface and sandwiched between the first inclined surface and the second inclined surface.

[0007] According to the present invention, a constant temperature device can be provided that can improve the airtightness of a storage compartment.

[0008] Figure 1 is a perspective view of a refrigeration apparatus according to Embodiment 1 of the present invention. Figure 2 is a perspective view of the refrigeration apparatus with the door open. Figure 3 is a perspective view of the inner box and the box-side breaker. Figure 4 is a schematic plan view of a refrigeration apparatus with the outer door omitted. Figure 5 is a plan view of the frame-shaped member. Figure 6 shows the C of the frame-shaped member shown in Figure 5. ２ -C ２ Cross-sectional view and C ３ -C ３ This is a cross-sectional view. Figure 7 shows the C of the frame-shaped member shown in Figure 5. ４ -C ４ Cross-sectional view and C ５ -C ５ This is a cross-sectional view. Figure 8 is A of Figure 5.３ It is a partial enlarged plan view. FIG. 9 is A of FIG. 5 ３ It is a partial enlarged bottom view. FIG. 10 is A of FIG. 5 ３ It is a perspective view of part A seen from obliquely above. FIG. 11 is A of FIG. 5 ３ It is a perspective view of part A seen from obliquely below. FIG. 12 is a bottom view of the outer door. FIG. 13 is a C-C １ -C １ cross-sectional view. FIG. 14 is a diagram for explaining the force acting on the packing. FIG. 15 is a C-C ２ -C ２ cross-sectional view and a view corresponding to a C-C ３ -C ３ cross-sectional view. FIG. 16 is a C-C ４ -C ４ cross-sectional view and a view corresponding to a C-C ５ -C ５ cross-sectional view. FIG. 17 is a C-C １ -C １ cross-sectional view of FIG. 1 with some components omitted, regarding the refrigeration device according to Embodiment 2 of the present invention.

[0009] Hereinafter, embodiments of the thermostat according to the present invention will be described with reference to the drawings. The same components are denoted by the same reference numerals. The matters described below together with the attached drawings are for explaining exemplary embodiments and not for showing the only embodiment.

[0010] [Embodiment 1] Referring to FIGS. 1 to 14, the refrigeration device 1 according to Embodiment 1 of the present invention will be described.

[0011] FIG. 1 is a perspective view of the refrigeration device 1 with the outer door 24 closed. The state of the refrigeration device 1 shown in FIG. 1 is referred to as the closed state of the refrigeration device 1. FIG. 2 is a perspective view of the refrigeration device 1 with the outer door 24 open. The state of the refrigeration device 1 shown in FIG. 2 is referred to as the open state of the refrigeration device 1.

[0012] In the following description, the orthogonal coordinate system (X, Y, Z) shown in each figure may be used. The X direction is the front-rear direction of the refrigeration device 1. The + side of the X direction is the front side of the refrigeration device 1. The - side of the X direction is the rear side of the refrigeration device 1.

[0013] The Y direction is the left-right direction and the width direction of the refrigeration device 1. The + side of the Y direction is the left side of the refrigeration device 1. The left side of the refrigeration device 1 means the left side when the refrigeration device 1 is viewed from the front side.

[0014] The - side of the Y direction is the right side of the refrigeration device 1. The right side of the refrigeration device 1 means the right side when the refrigeration device 1 is viewed from the front side.

[0015] The Z direction is the up-down direction and the height direction of the refrigeration device 1. The + side of the Z direction is the upper side of the refrigeration device 1. The - side of the Z direction is the lower side of the refrigeration device 1.

[0016] First, the basic configuration of the refrigeration device 1 will be briefly described. The refrigeration device 1 according to the present embodiment has a main body 2 and a mechanical storage part 9 provided on the side thereof.

[0017] The main body 2 has a box part 21, an inner door 23, and an outer door 24.

[0018] The box part 21 has an inner box 210, an outer box 211, and a box-side breaker 3.

[0019] First, the outline of the box part 21 will be described. The box part 21 has a storage compartment 210a that opens upward (in other words, in the first direction). Also, the box part 21 has a box-side inclined surface 311 on the upper surface that is inclined such that the inner edge is located on the first direction side of the outer edge.

[0020] The box-side inclined surface 311 is formed by an annular inclined surface that surrounds the opening of the storage compartment 210a. Such a box-side inclined surface 311 is provided on the upper surface of the box-side breaker 3. A packing 8 described later is fixed to the box-side inclined surface 311.

[0021] Also, the box part 21 has an annular box-side plane 312 parallel to the horizontal plane inside the box-side inclined surface 311. Such a box-side plane 312 is provided on the upper surface of the box-side breaker 3. Hereinafter, the specific configuration of the box part 21 will be described.

[0022] The inner box 210 (see Figure 3) is formed, for example, from a metal plate and / or a synthetic resin plate. The inner box 210 is composed of a box-shaped member with an open top.

[0023] The inner box 210 has a storage compartment 210a with an opening at the top. In this embodiment, the storage compartment 210a is composed of a single space. However, the storage compartment 210a may be divided into multiple (for example, two) storage compartments by, for example, a partition plate.

[0024] The outer casing 211 (see Figures 2 and 4) is made of, for example, a metal plate and / or a synthetic resin plate. The outer casing 211 is made of a box-shaped member with an open top. The outer casing 211 is made of a box-shaped member that is larger than the inner casing 210.

[0025] The outer box 211 has a storage space 211a (see Figure 4) that is open at the top. The inner box 210 is housed in the storage space 211a of the outer box 211.

[0026] In the storage space 211a, a thermal insulation material (not shown) is provided in the space 211b (see Figure 4) between the inner surface of the outer box 211 and the outer surface of the inner box 210. The thermal insulation material is made of, for example, polyurethane foam (in other words, foamed urethane).

[0027] Next, the configuration of the box-side breaker 3 will be described. Figure 3 is a perspective view of the inner box 210 and the box-side breaker 3. Figure 4 is a schematic plan view of the refrigeration unit 1 with the outer door 24 omitted. In Figure 4, the inner box 210, the outer box 211, and the box-side breaker 3 are shown by thick solid lines.

[0028] The box-side breaker 3 is an example of a box-side annular member. The box-side breaker 3 is an annular member that connects the upper end of the inner box 210 and the upper end of the outer box 211. It closes the space 211b between the inner surface of the outer box 211 and the outer surface of the inner box 210 from above.

[0029] The specific configuration of the box-side breaker 3 will be explained with reference to Figures 5 to 11. Figure 5 is a plan view of the box-side breaker 3.

[0030] The box-side breaker 3 has an inner breaker 30 and an outer breaker 31.

[0031] The inner breaker 30 is an example of an inner annular member and is a rectangular frame made of synthetic resin. The inner breaker 30 has a box-side plane 312 (see Figure 5) on its upper side. The box-side plane 312 is a rectangular frame-shaped surface parallel to the horizontal plane (in other words, the XY plane). The box-side plane 312 is provided on the inside of the box-side inclined surface 311 of the outer breaker 31, which will be described later.

[0032] The inner breaker 30 has an inner door support surface 313 (see Figure 5) located inside the box-side plane 312. The inner door support surface 313 is rectangular in shape. The inner door support surface 313 is located below the box-side plane 312. The inner door support surface 313 is connected to the inner edge of the box-side plane 312 via a stepped portion.

[0033] The inner door support surface 313 supports the inner door 23. When the refrigeration unit 1 is closed, the outer edge of the inner door 23 rests on the inner door support surface 313.

[0034] Furthermore, with respect to the inner circuit breaker 30, "outside" refers to the direction away from the center of the inner circuit breaker 30 in a plan view of the inner circuit breaker 30.

[0035] With respect to the inner breaker 30, "inside" means the direction approaching the center of the inner breaker 30 in a plan view of the inner breaker 30. A plan view means viewing the inner breaker 30 from the direction in which the storage compartment 210a opens (in this embodiment, from above).

[0036] The inner breaker 30 has a pair of first frame elements 301a, 301b, a pair of second frame elements 302a, 302b, and a plurality (four in this embodiment) of corner elements 303a to 303d.

[0037] The first frame elements 301a, 301b, the second frame elements 302a, 302b, and the corner elements 303a to 303d are connected in a rectangular frame shape to form the inner breaker 30.

[0038] The upper surfaces of the first frame elements 301a, 301b, the second frame elements 302a, 302b, and the corner elements 303a to 303d constitute the box-side plane 312.

[0039] Specifically, the first frame elements 301a and 301b are made of synthetic resin and are plate-shaped, extending in the left-right direction. Both ends of the first frame elements 301a and 301b in the direction of extension (left-right direction in this embodiment) are parallel to a plane perpendicular to the direction of extension (the XZ plane in this embodiment).

[0040] The second frame elements 302a and 302b are made of synthetic resin and are plate-shaped, extending in the front-rear direction. Both ends of the second frame elements 302a and 302b in the direction of extension (in this embodiment, the front-rear direction) are parallel to a plane perpendicular to the direction of extension (in this embodiment, the YZ plane).

[0041] The corner elements 303a to 303d are approximately L-shaped in plan view. Plan view means viewing the inner breaker 30 from above.

[0042] The corner elements 303a to 303d and the first frame elements 301a and 301b are fixed on a plane perpendicular to the extension direction of the first frame elements 301a and 301b. The corner elements 303a to 303d and the second frame elements 302a and 302b are fixed on a plane perpendicular to the extension direction of the second frame elements 302a and 302b.

[0043] Such an inner breaker 30 is positioned inside the outer breaker 31. In other words, the inner breaker 30 is positioned closer to the storage compartment 210a than the outer breaker 31. The inner breaker 30 constitutes the innermost part of the box-side breaker 3. The inner breaker 30 is fixed to the inner box 210.

[0044] In Figure 5, the first frame elements 301a and 301b, the second frame elements 302a and 302b, and parts of the corner elements 303a to 303d are shown in a separated state.

[0045] The outer breaker 31 is an example of an outer annular member and is a rectangular frame made of synthetic resin. The outer breaker 31 has a box-side inclined surface 311 on its upper side. The box-side inclined surface 311 is an example of a first inclined surface in the box.

[0046] The box-side inclined surface 311 is an inclined surface that is inclined such that its inner edge is located above its outer edge. The box-side inclined surface 311 is provided so as to surround the box-side plane 312 from the outside.

[0047] The angle of inclination θ of the inclined surface 311 on the box side with respect to the horizontal direction ３１１ The angle is 45°. The angle of inclination θ of the box-side inclined surface 311 with respect to the horizontal direction. ３１１ The angle may be other than 45°. From the viewpoint of increasing the width dimension of the seal portion 81 described later, it is preferable that the inclination angle θ of the inclined surface 311 on the box side with respect to the horizontal direction be 40° or more and 50° or less.

[0048] Thus, the upper surface of the outer breaker 31 is generally sloped downwards towards the outside. "Generally" means understanding the shape of the upper surface of the outer breaker 31, excluding any fine details such as protrusions or indentations.

[0049] Furthermore, with respect to the outer breaker 31, "outside" means the direction away from the center of the outer breaker 31 in a plan view of the outer breaker 31.

[0050] With respect to the outer breaker 31, "inside" means the direction approaching the center of the outer breaker 31 in a plan view of the outer breaker 31. A plan view means viewing the outer breaker 31 from the direction in which the storage compartment 210a opens (in this embodiment, from above).

[0051] The outer breaker 31 has a pair of first frame elements 4A, 4B and a pair of second frame elements 5A, 5B.

[0052] The pair of first frame elements 4A and 4B and the pair of second frame elements 5A and 5B are connected in a rectangular frame shape to form the outer breaker 31.

[0053] The pair of first frame elements 4A and 4B extend in the left-right direction. The pair of second frame elements 5A and 5B extend in the front-back direction.

[0054] The first frame element 4A and the first frame element 4B have a symmetrical configuration in the front-to-back direction. Furthermore, the second frame element 5A and the second frame element 5B have a symmetrical configuration in the left-to-right direction.

[0055] The first frame elements 4A and 4B and the second frame elements 5A and 5B have the same cross-sectional shape. The cross-sectional shapes of the first frame elements 4A and 4B and the second frame elements 5A and 5B may be the same or approximately the same along their entire length.

[0056] Furthermore, the term "cross-section" refers to the cross-section obtained when the first frame elements 4A and 4B and the second frame elements 5A and 5B are cut by a plane perpendicular to the extension direction of the first frame elements 4A and 4B and the second frame elements 5A and 5B.

[0057] In this embodiment, the cross-sections of the first frame elements 4A and 4B are the cross-sections obtained when the first frame elements 4A and 4B are cut by a plane parallel to the front-rear and up-down directions (in other words, the XZ plane).

[0058] Furthermore, the cross-sections of the second frame elements 5A and 5B are the cross-sections obtained when the second frame elements 5A and 5B are cut by planes parallel to the left-right and up-down directions (in other words, the YZ plane).

[0059] The first frame elements 4A and 4B are plate-like members that extend in the left-right direction. These first frame elements 4A and 4B are manufactured by cutting a second intermediate (not shown) obtained by cutting a first intermediate (not shown) formed by extrusion molding, and then performing machining and drilling on the second intermediate.

[0060] The first frame elements 4A and 4B have a main body portion 40 that extends in the left-right direction. The main body portion 40 is a plate-like member that is substantially parallel in the front-rear direction and the left-right direction. The main body portion 40 is manufactured by extrusion molding.

[0061] The main body portion 40 has a first box-side inclined surface 401 (see Figure 6) on its upper side. The first box-side inclined surface 401 is inclined such that its inner edge is located above its outer edge. In this embodiment, the upper side corresponds to an example of the first direction.

[0062] The first box-side inclined surface 401, together with the second box-side inclined surface 501 (described later), constitutes the box-side inclined surface 311.

[0063] A portion of the packing 8 (see Figure 13), described later, is fixed to the inclined surface 401 of the main body 40 on the first box side. The inclined surface 401 of the main body 40 on the first box side has a shape that allows the packing 8 to be locked in place. The packing 8 will be described later.

[0064] The main body portion 40 has a first locking portion 402 and a second locking portion 403 on the inclined surface 401 on the first box portion side, which lock the packing 8. The first locking portion 402 is provided on the inclined surface 401 on the first box portion side, near the inner end.

[0065] The second locking portion 403 is provided on the inclined surface 401 on the first box side, near the outer end. The first locking portion 402 engages with the first locking portion 82 on the packing side of the packing 8 (see Figure 13). The second locking portion 403 engages with the second locking portion 83 on the packing side of the packing 8.

[0066] The main body portion 40 has a horizontal plate portion 412 at its outer end. The horizontal plate portion 412 is a horizontal plate-shaped member that extends in the left-right direction. The horizontal plate portion 412 is provided along the entire length of the main body portion 40.

[0067] As shown in Figure 13, the horizontal plate portion 412 is located outside the packing 8 when assembled to the refrigeration device 1 (hereinafter referred to as the "assembled state"). The horizontal plate portions 412 of the first frame elements 4A and 4B and the horizontal plate portions 516 of the second frame elements 5A and 5B, which will be described later, are assembled in a ring shape to form an outer annular portion 314 when assembled. The outer annular portion 314 is located outside the packing 8 and is arranged along the outer edge of the packing 8. This outer annular portion 314 is provided at the outer end of the outer breaker 31 around its entire circumference.

[0068] The upper surface of the horizontal plate portion 412 is a horizontal plane. Therefore, the upper surface of the outer annular portion 314 is also a horizontal plane. The upper surface of the outer annular portion 314 is sometimes referred to as the annular horizontal plane. The horizontal plate portion 412 can catch dew 84 (see Figure 14) that drips from the outer edge of the packing 8 when the refrigeration device 1 is in use. In this embodiment, since the upper surface of the horizontal plate portion 412 is a horizontal plane, it is easy to catch the dew 84.

[0069] The first frame elements 4A and 4B have two first bosses 404 and 405 extending in the left-right direction on the main body 40. The first bosses 404 and 405 are provided along the entire length of the main body 40. In other words, the first bosses 404 and 405 are provided from the left end to the right end of the main body 40.

[0070] The first bosses 404 and 405 are hollow along their entire length. These first bosses 404 and 405 are formed by extrusion molding.

[0071] The first frame elements 4A and 4B have first inclined end faces 406 and 407 at both ends in the left-right direction of the main body portion 40. The first inclined end faces 406 and 407 are surfaces that, in a plan view, are inclined at a predetermined angle (45° in this embodiment) with respect to the extending direction (left-right direction in this embodiment) of the main body portion 40.

[0072] Figures 8 to 11 are A of Figure 5. ３ This is an enlarged view of the part corresponding to the section. Figures 8 to 11 show the left end of the first frame element 4A and the rear end of the second frame element 5A, which will be described later.

[0073] Note that Figure 5B ３ Department, C ３ Department, and D ３ The configuration of the part corresponding to the section is the same as the configuration shown in Figures 8 to 11. Therefore, Figure 5B ３ Department, C ３ Department, and D ３ For explanations of the parts corresponding to the sections, you may appropriately refer to the reference numerals and directions in Figures 8 to 11 by substituting them as needed.

[0074] The first inclined end faces 406 and 407 are formed by machining. The shape of the first inclined end faces 406 and 407 is determined according to the cross-sectional shape of the first frame elements 4A and 4B.

[0075] The first inclined end faces 406 and 407, in the connected state of the first frame elements 4A and 4B and the second frame elements 5A and 5B, abut against the second inclined end faces 506 and 507 of the second frame elements 5A and 5B, as described later (Figure 5, C ３ (See section). Furthermore, the first inclined end faces 406, 407 and the second inclined end faces 506, 507 have the same shape and are in surface contact with each other across their entire surface.

[0076] Furthermore, the first frame elements 4A and 4B have first planes 408 and 409 (see Figure 11) at both ends in the left-right direction of the main body 40 that are perpendicular to the extension direction of the first frame elements 4A and 4B (in other words, the front-to-back direction).

[0077] Figure 11 is A of Figure 5. ３ This is a perspective view of the section from the rear at an oblique angle. Figure 11 shows the left end of the first frame element 4A.

[0078] Furthermore, the configuration of the right end of the first frame element 4A, the left end of the first frame element 4B, and the right end of the first frame element 4B is the same as the configuration of the left end of the first frame element 4A shown in Figure 11. Therefore, the descriptions of the right end of the first frame element 4A, the left end of the first frame element 4B, and the right end of the first frame element 4B may be appropriately referenced by substituting the reference numerals and directions in Figure 11.

[0079] The first planes 408 and 409 are provided on both end faces of the first bosses 404 and 405 in the extending direction (left-right direction in this embodiment). These first planes 408 and 409 abut against the second planes 508 and 509 of the second frame elements 5A and 5B when the first frame elements 4A and 4B are connected.

[0080] In this embodiment, the first frame elements 4A and 4B have two first planes 408 and 409 at both ends in the extending direction. These first planes 408 and 409 contribute to the positioning of the first frame elements 4A and 4B and the second frame elements 5A and 5B when connecting them.

[0081] First through holes 410 and 411 (see Figure 11) are provided in the central part of the first planes 408 and 409.

[0082] The first through-hole 410 is formed by the central hole of the first boss 404. The first through-hole 411 is formed by the central hole of the first boss 405.

[0083] The tip of the first screw 61 (see Figure 11) is inserted into the first through holes 410 and 411 when the first frame elements 4A and 4B are connected to the second frame elements 5A and 5B. In other words, the first screw 61 engages with the first bosses 404 and 405.

[0084] The second frame elements 5A and 5B are plate-shaped members that extend in the front-rear direction. These second frame elements 5A and 5B are manufactured by cutting and drilling a second intermediate body (not shown) obtained by cutting a first intermediate body (not shown) formed by extrusion molding.

[0085] The second frame elements 5A and 5B have a main body portion 50 that extends in the front-rear direction. The main body portion 50 is a plate-like member that is substantially parallel in the front-rear and left-right directions. The main body portion 50 is manufactured by extrusion molding.

[0086] The main body 50 has a plurality of protrusions and indentations on its upper surface. These protrusions and indentations are provided along the entire length of the second frame elements 5A and 5B.

[0087] These protrusions and indentations constitute the design of the upper surfaces of the second frame elements 5A and 5B. The design of the upper surfaces of the second frame elements 5A and 5B is the same as the design of the upper surfaces of the first frame elements 4A and 4B.

[0088] The main body 50 has a second box-side inclined surface 501 (see Figure 7) on its upper side. The second box-side inclined surface 501 is inclined such that its inner edge is located above its outer edge.

[0089] In the outer breaker 31, the first box-side inclined surface 401 and the second box-side inclined surface 501 are combined in a rectangular frame shape to form the box-side inclined surface 311.

[0090] A portion of the packing 8 (see Figure 2) is fixed to the inclined surface 501 on the second box side. The inclined surface 501 on the second box side has a shape that allows the packing 8 to be locked in place. The packing 8 will be described later.

[0091] The main body portion 50 has a first locking portion 502 and a second locking portion 503 on the inclined surface 501 on the second box portion side, which lock the packing 8. The first locking portion 502 is provided on the inclined surface 501 on the second box portion side, near the inner end.

[0092] The second locking portion 503 is provided on the inclined surface 501 on the second box side, near the outer end. The first locking portion 502 engages with the first locking portion 82 on the packing side of the packing 8. The second locking portion 403 engages with the second locking portion 83 on the packing side of the packing 8.

[0093] The main body portion 50 has a horizontal plate portion 516 at its outer end. The horizontal plate portion 516 is a horizontal plate-shaped member that extends in the front-rear direction. The horizontal plate portion 516 is provided along the entire length of the main body portion 50.

[0094] The horizontal plate portion 516, like the horizontal plate portion 412 described above, is located outside the packing 8 when assembled in the refrigeration device 1. The horizontal plate portion 516, together with the horizontal plate portions 412 of the first frame elements 4A and 4B, constitutes the outer annular portion 314.

[0095] The upper surface of the horizontal plate portion 516 is a horizontal plane. Therefore, the upper surface of the outer annular portion 314 (i.e., the annular horizontal plane) is also a horizontal plane. The horizontal plate portion 516 can receive dew 84 (see Figure 14) that drips from the outer edge of the packing 8. In this embodiment, since the upper surface of the horizontal plate portion 516 is a horizontal plane, it is easy to receive the dew 84.

[0096] The second frame elements 5A and 5B have second bosses 504 and 505 (see Figure 6) that extend in the front-rear direction to the main body 50.

[0097] The second bosses 504 and 505 are provided along the entire length of the main body 50. In other words, the second bosses 504 and 505 are provided from the front end to the rear end of the main body 50.

[0098] The configuration of the second bosses 504 and 505 is the same as that of the first bosses 404 and 405 in the first frame elements 4A and 4B described above. Specifically, the second bosses 504 and 505 are hollow along their entire length. Such second bosses 504 and 505 are formed by extrusion molding.

[0099] The second frame elements 5A and 5B have second inclined end faces 506 and 507 at both ends in the front-rear direction of the main body 50. The second inclined end faces 506 and 507 are surfaces that are inclined at a predetermined angle (45° in this embodiment) with respect to the extending direction of the main body 50 (front-rear direction in this embodiment).

[0100] The second inclined end faces 506 and 507 are formed by cutting a second intermediate body (not shown) obtained by cutting a first intermediate body (not shown) formed by extrusion molding, and then subjecting that to secondary processing such as cutting. The shape of the second inclined end faces 506 and 507 is determined according to the cross-sectional shape of the second frame elements 5A and 5B.

[0101] The second inclined end faces 506 and 507 abut against the first inclined end faces 406 and 407 of the first frame elements 4A and 4B when the first frame elements 4A and 4B are connected (Figure 5, C ３ (see section).

[0102] Furthermore, the second frame elements 5A and 5B have second planes 508 and 509 (see Figure 8) perpendicular to the vertical direction at both ends of the main body 50 in the left-right direction.

[0103] Figure 11 is A of Figure 5. ３ This is a perspective view of the part from the rear at an oblique angle. Figure 11 shows the rear end of the second frame element 5A.

[0104] Furthermore, the configuration of the front end of the second frame element 5A, the front end of the second frame element 5B, and the rear end of the second frame element 5B is the same as the configuration of the rear end of the second frame element 5A shown in Figure 11. Therefore, the descriptions of the front end of the second frame element 5A, the front end of the second frame element 5B, and the rear end of the second frame element 5B may be appropriately referenced by substituting the reference numerals and directions in Figure 11.

[0105] The second plane 508 is provided on the side surfaces of both ends of the second boss 504 in the front-rear direction. The second plane 509 is provided on the side surfaces of both ends of the second boss 505 in the front-rear direction.

[0106] These second planes 508 and 509 come into contact with the first planes 408 and 409 of the first frame elements 4A and 4B when the first frame elements 4A and 4B are connected to the second frame elements 5A and 5B.

[0107] In this embodiment, the second frame elements 5A and 5B have two second planes 508 and 509 at both ends in the extending direction. These second planes 508 and 509 contribute to the positioning of the first frame elements 4A and 4B and the second frame elements 5A and 5B when connecting them.

[0108] In this embodiment, the second planes 508 and 509 are provided along the entire length of the second bosses 504 and 505 in the front-rear direction. These second planes 508 and 509 are formed by extrusion molding. Alternatively, the second planes 508 and 509 may be formed by machining.

[0109] The second planes 508 and 509 are provided with second through holes 510 and 511. The second through holes 510 and 511 penetrate the second bosses 504 and 505 in the left-right direction. In other words, the second planes 508 and 509 are provided around the second through holes 510 and 511.

[0110] In the second bosses 504 and 505, seating surfaces 512 and 513 are provided on the portions facing the portions where the second through holes 510 and 511 (see Figure 10) are located. The seating surfaces 512 and 513 are planes parallel to the second planes 508 and 509.

[0111] The first screws 61 (see Figure 10) are inserted through the second through holes 510 and 511 when the first frame elements 4A and 4B are connected to the second frame elements 5A and 5B. The heads of the first screws 61 are in contact with the seating surfaces 512 and 513.

[0112] Furthermore, in the second frame elements 5A and 5B, relief portions 514 and 515 (see Figure 10) are provided in the portions facing the portions where the second through holes 510 and 511 are located. The relief portions 514 and 515 are portions that prevent interference between the first screw 61 and the second frame elements 5A and 5B when the first screw 61 is inserted through the second through holes 510 and 511.

[0113] The relief portion 514 is composed of through holes that penetrate the second frame elements 5A and 5B. The direction in which the relief portion 514 penetrates the second frame elements 5A and 5B is the direction in which the first screw 61 is inserted into the second through hole 511. The relief portion 515 is composed of a plurality of recesses provided on the upper surfaces of the second frame elements 5A and 5B.

[0114] The first frame elements 4A and 4B and the second frame elements 5A and 5B, having the configuration described above, are connected in a rectangular frame shape by the first screw 61 (see Figure 10) to form the outer breaker 31.

[0115] In this state, the first inclined end faces 406 and 407 of the first frame elements 4A and 4B come into contact with the second inclined end faces 506 and 507 of the second frame elements 5A and 5B.

[0116] Furthermore, the first planes 408 and 409 of the first frame elements 4A and 4B are in contact with the second planes 508 and 509 of the second frame elements 5A and 5B.

[0117] The outer breaker 31, assembled as described above, is positioned to surround the inner breaker 30. The outer breaker 31 is then fixed to the inner breaker 30 with fastening components such as screws (not shown). The outer breaker 31 constitutes the outermost part of the box-side breaker 3.

[0118] The box-side breaker 3, which consists of an inner breaker 30 and an outer breaker 31, is fixed to the upper end of the inner box 210 and the upper end of the outer box 211 by fastening components such as screws (not shown). In this state, the box-side breaker 3 covers the portion between the upper end of the inner box 210 and the upper end of the outer box 211 (in other words, the upper end of the box section 21) from above.

[0119] The outer door 24 is attached to the outer box 211 in such a way that it can open and close the opening of the outer box 211. When the outer door 24 closes the opening of the outer box 211, the outer box 211 becomes airtight. Insulation material (not shown) is placed inside the outer door 24. The outer box 211 is an example of a door section.

[0120] The inner door 23 is located on the interior side of the outer door 24. Unless otherwise specified, the interior side refers to the side closer to the center of the refrigeration unit 1 (in other words, the storage compartment 210a) when the outer door 24 and the inner door 23 are closed.

[0121] Furthermore, unless otherwise specified, the "external side" refers to the side furthest from the center of the refrigeration unit 1 (in other words, the storage compartment 210a) when the outer door 24 and the inner door 23 are closed.

[0122] The inner door 23 is supported by the box section 21 in a state that allows it to open and close the opening of the inner box 210. In this embodiment, the inner door 23 is placed on the box section side breaker 3 (specifically, the inner door support surface 313 of the inner breaker 30). Therefore, the user can easily remove the inner door 23 from the box section 21.

[0123] The machine housing 9 is located to the side of the main body 2. Some of the devices that make up the refrigeration circuit (not shown) are housed in the machine housing 9. Examples of the devices housed in the machine housing 9 include a compressor (not shown) and a pressure reducer (not shown). The devices housed in the machine housing 9 are determined according to the configuration of the refrigeration circuit.

[0124] The storage compartment 210a of the inner box 210 is cooled by the refrigeration circuit. The configuration of the refrigeration circuit may be any of the various conventional refrigeration circuit configurations. Therefore, a description of the refrigeration circuit will be omitted.

[0125] Furthermore, the refrigeration device 1 according to this embodiment has a box-side breaker 3 that connects the upper end of the inner box 210 and the upper end of the outer box 211. In addition, the refrigeration device 1 has a door-side breaker 7 on the inner surface (in this embodiment, the bottom surface) of the outer door 24.

[0126] Next, we will explain the door-side circuit breaker 7. First, we will explain the basic configuration of the door-side circuit breaker 7.

[0127] The door-side breaker 7 is an example of a door-side annular member and is fixed to the inner surface (in this embodiment, the bottom surface) of the outer door 24. As shown in Figure 12, the door-side breaker 7 is a rectangular frame shape that follows the outer edge of the outer door 24. The door-side breaker 7 is part of the structure of the outer door 24.

[0128] The door-side breaker 7 faces the outer breaker 31 of the box-side breaker 3 in the vertical direction when the refrigeration unit 1 is in the closed state (in other words, the state shown in Figure 1). In the following description of the door-side breaker 7, the door-side breaker 7 in the closed state of the refrigeration unit 1 will be used as the reference.

[0129] The door-side breaker 7 has an annular door-side inclined surface 701 that faces the box-side inclined surface 311 of the box-side breaker 3.

[0130] The specific configuration of the door-side breaker 7 will be described below. As shown in Figure 13, the door-side breaker 7 has an inclined plate portion 71, a buffer plate portion 72, and a flat plate portion 73.

[0131] The inclined plate portion 71 is rectangular in shape. The inclined plate portion 71 is a plate-like member that is inclined such that its inner edge is located above its outer edge. The inclination angle of the inclined plate portion 71 with respect to the horizontal is 45°. The inclination angle of the inclined plate portion 71 with respect to the horizontal may be other than 45°.

[0132] The inclined plate portion 71 has a door-side inclined surface 701 on its lower side. The door-side inclined surface 701 is an inclined surface that is inclined such that its inner edge is located above its outer edge.

[0133] The inclination angle θ of the door-side inclined surface 701 with respect to the horizontal direction ７０１ The angle is 45°. The inclination angle θ of the door-side inclined surface 701 with respect to the horizontal direction. ７０１ The angle may be other than 45°.

[0134] From the viewpoint of increasing the width dimension of the sealing portion 81 described later, the inclination angle θ of the box-side inclined surface 311 with respect to the horizontal direction ７０１ It is preferable that the angle is between 40° and 50°. It is preferable that the door-side inclined surface 701 is parallel to the box-side inclined surface 311.

[0135] The door-side inclined surface 701 faces the box-side inclined surface 311 of the outer breaker 31 in the vertical direction. The door-side inclined surface 701 is an example of a second inclined surface in the door section.

[0136] The buffer plate portion 72 is connected to the inner edge of the inclined plate portion 71. The buffer plate portion 72 is in the shape of a horizontal rectangular frame. The buffer plate portion 72 faces the box-side breaker 3 (specifically, the outer breaker 31) in the vertical direction, separated by a predetermined distance (hereinafter referred to as the "first distance").

[0137] From the viewpoint of improving the airtightness of the storage compartment 210a, the first spacing is preferably small. Specifically, the first spacing is preferably 2 mm or more and 5 mm or less. The first spacing is preferably greater than or equal to the thickness dimension of the buffer plate portion 72. The first spacing may be determined in relation to the thickness dimension of the buffer plate portion 72.

[0138] Furthermore, as shown in Figure 13, the buffer plate portion 72 abuts against the upper end of the packing 8 (specifically, the sealing portion row 801a), which will be described later. Such a buffer plate portion 72 is an example of a door-side sealing portion.

[0139] When the outer door 24 is closed deeply against the box section 21, the buffer plate portion 72 comes into contact with the upper surface of the box section side breaker 3 (specifically, the outer breaker 31).

[0140] In this way, the buffer plate portion 72 prevents the outer door 24 from being closed any further against the box portion 21. At this time, the buffer plate portion 72 receives the impact when the door-side breaker 7 and the box portion-side breaker 3 come into contact.

[0141] The flat plate portion 73 is connected to the inner edge of the inclined plate portion 71. The flat plate portion 73 is positioned above the buffer plate portion 72. The flat plate portion 73 is in the shape of a horizontal rectangular frame. The inner edge of the flat plate portion 73 is positioned inward from the inner edge of the buffer plate portion 72.

[0142] A rectangular door side panel 241 is supported between the flat plate portion 73 and the buffer plate portion 72. The door side panel 241 is a flat plate parallel to the horizontal plane. When the refrigeration unit 1 is closed, the door side panel 241 (see Figures 2 and 13) faces the opening of the storage compartment 210a in the vertical direction.

[0143] The inner surface (in this embodiment, the bottom surface) of the door side panel 241 is the door side plane 242. The door side plane 242 is an example of the second plane of the door and is a horizontal plane.

[0144] The door-side plane 242 faces the box-side plane 312 of the box-side breaker 3 in the vertical direction via a predetermined distance (hereinafter referred to as the "second distance") that is larger than the first distance described above. From the viewpoint of improving the airtightness of the storage compartment 210a, it is preferable that the second distance be small.

[0145] In this embodiment, the door-side plane 242 and the box-side plane 312 face each other with the same width dimension as the box-side plane 312. This configuration is preferable from the viewpoint of suppressing contact of cold air with the packing 8, which will be described later. Note that the width dimension of the box-side plane 312 refers to the length from the inner edge to the outer edge of the box-side plane 312.

[0146] In this embodiment, the door-side breaker 7 is made of a separate component from the outer door 24. Such a door-side breaker 7 is fixed to the outer door 24. However, the door-side breaker 7 may be integrally constructed with the outer door 24. In other words, the outer door 24 may have the function of the door-side breaker 7.

[0147] The refrigeration apparatus 1 of this embodiment, having the configuration described above, includes a packing 8 sandwiched between the box portion 21 and the outer door 24. The packing 8 will be described below.

[0148] The packing 8 is provided on the inclined surface 311 on the box side of the box-side breaker 3 (specifically, the outer breaker 31). The packing 8 is rectangular in shape along the box-side breaker 3 (specifically, the outer breaker 31).

[0149] Figure 13 is C in Figure 1. １ -C １ This is a cross-sectional view. Figure 1 shows the cross-sectional shape of the packing 8. The shape of the packing 8 shown in Figure 13 is in a free state. The packing 8 has the same cross-sectional shape along its entire length.

[0150] Furthermore, the arrangement of the packing 8, the box-side breaker 3, and the door-side breaker 7 is the same along the entire length of the packing 8. Note that the hatching showing the cross-sections of each component in Figure 13 has been omitted.

[0151] As shown in Figure 13, the packing 8 has a sealing portion 81, a first packing-side locking portion 82, and a second packing-side locking portion 83. The packing 8 is entirely made of an elastic material (for example, rubber or resin).

[0152] However, the packing 8 may be composed of a combination of a metal component and an elastic material component. In this case, at least the sealing portion 81 should be made of an elastic material.

[0153] The sealing portion 81 is rectangular in shape, along the box-side breaker 3 (specifically, the outer breaker 31).

[0154] The sealing portion 81 contacts the door-side breaker 7 (specifically, the inclined plate portion 71) provided on the outer door 24 when the refrigeration unit 1 is in the closed state. Unless otherwise specified, the sealing portion 81 in the closed state of the refrigeration unit 1 will be described below.

[0155] The sealing portion 81 is inclined such that, overall, its inner edge is positioned higher than its outer edge. In other words, the sealing portion 81 has a shape that conforms to the space between the outer breaker 31 of the box-side breaker 3 and the inclined plate portion 71 of the door-side breaker 7.

[0156] To put it another way, the sealing portion 81 has a shape that conforms to the inclined surface 311 on the box side of the box-side breaker 3 and the inclined surface 701 on the door side of the door-side breaker 7.

[0157] The sealing portion 81 has multiple (five in this embodiment) rows of sealing portions 801a to 801e arranged from the inside out.

[0158] In the description of packing 8, "inside" refers to the side closer to the center of packing 8 in a plan view. On the other hand, unless otherwise specified, "outside" refers to the side further from the center of packing 8 in a plan view. A plan view means viewing packing 8 from above.

[0159] Each of the sealing section rows 801a to 801e is rectangular in shape. Each of the sealing section rows 801a to 801e is hollow along its entire length. The shapes of the sealing section rows 801a to 801e are substantially the same.

[0160] The sealing section row 801a is located on the innermost side of the sealing section rows 801a to 801e.

[0161] The sealing section row 801b is provided so as to surround the sealing section row 801a from the outside. The sealing section row 801b is provided below the sealing section row 801a.

[0162] The sealing section row 801c is provided so as to surround the sealing section row 801b from the outside. The sealing section row 801c is provided below the sealing section row 801b.

[0163] The sealing section row 801d is provided so as to surround the sealing section row 801c from the outside. The sealing section row 801d is provided below the sealing section row 801c.

[0164] The sealing section row 801e is located on the outermost side of the sealing section rows 801a to 801e. The sealing section row 801e is located so as to surround the sealing section row 801d from the outside. The sealing section row 801e is located below the sealing section row 801d.

[0165] As described above, the sealing portion 81 is inclined such that it becomes lower from the sealing portion row 801a to the sealing portion row 801e. This configuration is preferable from the viewpoint of increasing the width dimension of the sealing portion 81. Note that the number of sealing portion rows is not limited to the number of sealing portion rows 801a to 801e in this embodiment.

[0166] The inclination angle θ of the seal portion 81 with respect to the horizontal direction ８１ The angle is 45°. The inclination angle θ of the seal portion 81 with respect to the horizontal direction. ８１ The angle may be other than 45°. From the viewpoint of increasing the width dimension of the seal portion 81, the inclination angle θ of the seal portion 81 with respect to the horizontal direction is important. ８１ Preferably, the angle is between 40° and 50°.

[0167] Preferably, the angle of inclination of the sealing portion 81 with respect to the horizontal direction is the same as the angle of inclination of the box-side inclined surface 311 and the door-side inclined surface 701 with respect to the horizontal direction.

[0168] The width dimension of the seal portion 81 is the dimension in the direction in which the rows of seal portions 801a to 801e are aligned. A configuration in which the seal portion is inclined makes it easier to increase the width dimension of the seal portion compared to a configuration in which the seal portion is horizontal.

[0169] Furthermore, the inclined seal configuration offers greater design flexibility regarding the number and size of the seal rows. This allows for flexible design tailored to the performance requirements of the seal.

[0170] As shown in Figure 13, each of the sealing sections 801a to 801e contacts the inclined plate section 71 (in other words, the door-side inclined surface 701) of the door-side breaker 7 around its entire circumference. This configuration is preferable from the viewpoint of improving the airtightness of the storage compartment 210a.

[0171] The contact state between each of the sealing sections 801a to 801e and the inclined plate section 71 is approximately equal to that of the others. Such a configuration is preferable from the viewpoint of improving the stability of the sealing function of the packing 8.

[0172] As shown in Figure 13, the sealing section row 801a abuts against the buffer plate section 72 of the door-side breaker 7 around its entire circumference. The contact position between the sealing section row 801a and the buffer plate section 72 is inward from the contact position between the sealing section row 801a and the inclined plate section 71 (in other words, the door-side inclined surface 701).

[0173] Such a configuration is preferable from the viewpoint of preventing the sealing sections 801b to 801e from coming into contact with the cold air inside the storage compartment 210a. This configuration prevents the sealing sections 801b to 801e from hardening due to contact with cold air. As a result, a decrease in the sealing function of the packing 8 can be suppressed.

[0174] The packing-side first locking portion 82 is a component for locking the packing 8 to the box-side breaker 3 (specifically, the outer breaker 31).

[0175] The packing-side first locking portion 82 is provided on the surface (in this embodiment, the lower surface) of the seal portion 81 that faces the box-side breaker 3 (specifically, the outer breaker 31). Specifically, the packing-side first locking portion 82 is provided on the lower surface of the seal portion row 801a in the seal portion 81.

[0176] The packing-side first locking portion 82 is rectangular in shape. The packing-side first locking portion 82 is provided around the entire circumference of the seal portion 81. This packing-side first locking portion 82 engages with the first locking portions 402 and 502 provided on the outer breaker 31.

[0177] The packing-side second locking portion 83, together with the packing-side first locking portion 82, is a component for locking the packing 8 to the box-side breaker 3 (specifically, the outer breaker 31).

[0178] The packing-side second locking portion 83 is provided at the outer end of the seal portion 81. In other words, the packing-side second locking portion 83 is provided on the seal portion 81, outside of the seal portion row 801e.

[0179] The packing-side second locking portion 83 is rectangular in shape. The packing-side second locking portion 83 is provided around the entire circumference of the seal portion 81. Such a packing-side second locking portion 83 engages with the second locking portions 403 and 503 provided on the outer breaker 31.

[0180] In this embodiment, the packing 8 is fixed to the outer breaker 31 by a first packing-side locking portion 82 provided at the inner end and a second packing-side locking portion 83 provided at the outer end. This configuration is preferable from the viewpoint of stably fixing the packing 8, which has a large width dimension, to the outer breaker 31.

[0181] The packing 8 having the configuration described above is sandwiched between the box-side inclined surface 311 of the outer breaker 31 and the door-side inclined surface 701 of the door-side breaker 7 when the refrigeration device 1 is in the closed state.

[0182] When the refrigeration unit 1 is closed, the packing 8 is subjected to a pressing force F in the direction normal to the door-side inclined surface 701 by the door-side inclined surface 701. ７０１ (See Figure 14) It undergoes elastic deformation upon receiving the pressure F. Because the packing 8 is sloped so that it becomes lower towards the outside, the packing 8 is subjected to the pressing force F. ７０１ The counteracting force is the pressing force F. ７０１ Elastic force F pointing in the opposite direction ８ This occurs.

[0183] Elastic force F８ This is the elastic force F, which is the upward component of the force. ８１ And the outward component force is the elastic force F. ８２ Includes elastic force F. ８１ This is the force that pushes the outer door 24 upward. Such an elastic force F ８１ This makes it easier to open the outer door 24.

[0184] Also, elastic force F ８２ This is an outward force that presses the seal portion 81 against the inclined surface 701 on the door side. Such an elastic force F ８２ This improves the adhesion (in other words, the fit) between the sealing portion 81 and the inclined surface 701 on the door side. Therefore, the elastic force F ８２ This contributes to improving the sealing function of the sealing portion 81.

[0185] The configuration of the packing 8 described above makes it possible to achieve both ease of opening the outer door 24 and improvement of the sealing function of the sealing portion 81.

[0186] In particular, in this embodiment, the angle of inclination of the box-side inclined surface 311 and the door-side inclined surface 701 with respect to the horizontal is 45°. Such a configuration is elastic force F ８１ and elastic force F ８２ This allows them to be the same size. This configuration makes it possible to better achieve both ease of opening the outer door 24 and improvement of the sealing function of the sealing part 81.

[0187] Furthermore, the packing 8 is located in the space between the box-side breaker 3 and the door-side breaker 7, in the space closer to the outer end (in other words, the space including the outer half). The space where the packing 8 is located is relatively far from the storage compartment 210a.

[0188] Furthermore, inside the space where the packing 8 is located, there is a space where the door-side surface 242 of the door-side panel 241 and the box-side surface 312 of the box-side breaker 3 face each other vertically at a second interval. This space prevents cold air from inside the storage compartment 210a from entering the space where the packing 8 is located.

[0189] Furthermore, the space in which the packing 8 is placed is sloped so that it becomes lower towards the outside. The packing 8, placed in such a space, is less likely to come into contact with the cold air inside the storage compartment 210a.

[0190] As described above, in this embodiment, the packing 8 is located relatively far from the storage compartment 210a and in a position that is less likely to come into contact with the cold air inside the storage compartment 210a. This configuration is preferable from the viewpoint of suppressing hardening of the packing 8 by contact with cold air. As a result, a decrease in the sealing function of the packing 8 can be suppressed.

[0191] (Effects and benefits of this embodiment) According to the refrigeration device 1 of this embodiment, which has the configuration described above, the airtightness of the storage compartment 210a can be improved. Furthermore, according to the refrigeration device 1 of this embodiment, the packing 8 can be made less susceptible to environmental influences in the storage compartment 210a, thus realizing a refrigeration device. The reasons for these are as previously stated.

[0192] Furthermore, in this embodiment, the box-side breaker 3 is composed of two parts: an inner breaker 30 and an outer breaker 31. This configuration makes it easy to standardize one of the components of the inner breaker 30 and the outer breaker 31.

[0193] The thickness of the enclosure of a refrigeration unit varies depending on its cooling capacity. Specifically, refrigeration units with high cooling capacity have thicker enclosures than those with low cooling capacity. Therefore, refrigeration units with high cooling capacity have a larger enclosure-side breaker width compared to those with low cooling capacity.

[0194] In this embodiment, by standardizing the outer breaker 31 across refrigeration units with different cooling capacities and designing the inner breaker 30 for each model, a box-side breaker that matches the thickness of the box can be realized. This configuration reduces the manufacturing cost of the refrigeration unit while increasing design flexibility.

[0195] Furthermore, the box-side breaker 3 may contract when exposed to the cold air in the storage compartment 210a. Specifically, the part of the box-side breaker 3 closest to the storage compartment 210a (in this embodiment, the inner breaker 30) is greatly affected by the cold air and experiences a large amount of contraction.

[0196] On the other hand, in the box-side breaker 3, the portion furthest from the storage compartment 210a (in this embodiment, the outer breaker 31) is less affected by cold air and shrinks less than the portion closer to the storage compartment 210a.

[0197] Under these conditions, using a single-component breaker for the enclosure could cause distortion throughout the entire breaker due to differences in partial shrinkage. Such distortion is undesirable from the standpoint of compromising the airtightness of the storage compartment. However, this statement does not preclude the use of a single-component breaker for the enclosure.

[0198] On the other hand, in this embodiment, the box-side breaker 3 is composed of two parts: an inner breaker 30 and an outer breaker 31. Therefore, the overall distortion of the box-side breaker 3 can be reduced.

[0199] Furthermore, in this embodiment, the corner elements 303a to 303d and the first frame elements 301a and 301b of the inner breaker 30 are fixed on a plane perpendicular to the extending direction of the first frame elements 301a and 301b.

[0200] Furthermore, the corner elements 303a to 303d and the second frame elements 302a and 302b of the inner breaker 30 are fixed on a plane perpendicular to the extending direction of the second frame elements 302a and 302b.

[0201] This configuration prevents gaps from forming at the connections between the first frame elements 301a, 301b, the second frame elements 302a, 302b, and the corner elements 303a to 303d when these elements contract due to the cold air in the storage compartment 210a. The operation and effects of the refrigeration device 1 according to this embodiment are as previously described.

[0202] [Embodiment 2] Next, with reference to Figures 15 to 17, a refrigeration apparatus 1B according to Embodiment 2 of the present invention will be described.

[0203] In this embodiment, the refrigeration system 1B has a configuration in which part of the outer breaker 31B of the box-side breaker 3B differs from the outer breaker 31 of the box-side breaker 3 in the refrigeration system 1 according to the above-described embodiment 1 (see Figures 6 and 7). The configuration of the refrigeration system 1B will be described below, focusing on the configuration that differs from that of the refrigeration system 1.

[0204] The refrigeration unit 1B has a box-side breaker 3B. The box-side breaker 3B has an inner breaker 30 and an outer breaker 31B. The configuration of the inner breaker 30 is the same as the configuration of the inner breaker 30 in the above-described embodiment 1.

[0205] The outer breaker 31B has a pair of first frame elements 4C, 4D and a pair of second frame elements 5C, 5D.

[0206] The pair of first frame elements 4C and 4D and the pair of second frame elements 5C and 5D are connected in a rectangular frame shape to form the outer breaker 31B.

[0207] The first frame elements 4C and 4D have a main body portion 40B that extends in the left-right direction. The main body portion 40B is a plate-like member that is substantially parallel in the front-rear and left-right directions. The main body portion 40B is manufactured by extrusion molding.

[0208] The main body portion 40B has a horizontal plate portion 412B at its outer end. The horizontal plate portion 412B is a horizontal plate-shaped member that extends in the left-right direction. The horizontal plate portion 412B is provided along the entire length of the main body portion 40B.

[0209] As shown in Figure 17, the horizontal plate portion 412B is positioned outside the packing 8 when assembled in the refrigeration unit 1B. The horizontal plate portions 412B of the first frame elements 4C and 4D and the horizontal plate portions 516B of the second frame elements 5C and 5D, which will be described later, are assembled together in a ring shape to form the outer ring portion 314B. The outer ring portion 314B is positioned outside the packing 8 and is arranged along the outer edge of the packing 8. This outer ring portion 314B is provided around the entire circumference of the outer end of the outer breaker 31B.

[0210] The upper surface of the horizontal plate portion 412B is a horizontal plane. Therefore, the upper surface of the outer annular portion 314B is also a horizontal plane. The upper surface of the outer annular portion 314B is sometimes referred to as the annular horizontal plane. The horizontal plate portion 412B can receive dew 84 (see Figure 17) that drips from the outer edge of the packing 8.

[0211] In this embodiment, the main body portion 40B has a groove portion 412a on the upper surface of the horizontal plate portion 412B. The groove portion 412a is formed by a recess that is recessed downward from the upper surface of the horizontal plate portion 412B. The groove portion 412a is provided along the entire length of the horizontal plate portion 412B in the left-right direction.

[0212] The grooves 412a of the first frame elements 4C and 4D and the grooves 516a of the second frame elements 5C and 5D, described later, are assembled together in an annular shape to form an annular groove 314a. Such annular grooves 314a are provided around the entire circumference of the outer end of the outer breaker 31B. Each of the grooves 412a is an example of a groove. The annular groove 314a can also be considered as a groove.

[0213] The groove 412a is located outside the packing 8 in the assembled state and is positioned along the outer edge of the packing 8. Therefore, the annular groove 314a is also located outside the packing 8 and is positioned along the outer edge of the packing 8.

[0214] Such grooves 412a can receive and temporarily store dew 84 (see Figure 17) that drips from the outer edge of the packing 8 when the refrigeration device 1B is in use. In this embodiment, the grooves 412a are provided in the part of the refrigeration device 1B that is exposed to the outside air. Therefore, the dew 84 stored in the grooves 412a evaporates naturally.

[0215] Furthermore, the groove for receiving the dew 84 may be provided in a part other than the outer breaker 31B. For example, the groove may be provided in a part of the box 21 that is located outside the packing 8. Specifically, the groove may be provided on the upper surface 211c of the outer box 211 (see Figure 17) that is located outside the packing 8. Note that the groove is omitted in Figure 17.

[0216] In this case, the horizontal plate portion 412B of the outer breaker 31B may be omitted. Such an upper surface 211c corresponds to an example of an outer annular portion. Furthermore, the upper surface 211c is a horizontal plane. Moreover, the upper surface 211c is provided in a position in the box portion 21 that is exposed to the outside air. Such a groove can also receive and temporarily store dew 84 (see Figure 17) that drips from the outer edge of the packing 8.

[0217] The configuration of the first frame elements 4C and 4D, other than the groove 412a, is the same as the configuration of the first frame elements 4A and 4B in the above-described embodiment 1. Therefore, the description of the first frame elements 4A and 4B in the above-described embodiment 1 may be appropriately adapted and used to describe the configuration of the first frame elements 4C and 4D, other than the groove 412a.

[0218] The second frame elements 5D and 5C are plate-like members that extend in the front-rear direction. These second frame elements 5C and 5D are manufactured by cutting and drilling a second intermediate (not shown) which is obtained by cutting a first intermediate (not shown) formed by extrusion molding.

[0219] The second frame elements 5C and 5D have a main body portion 50B that extends in the front-rear direction. The main body portion 50B is a plate-like member that is substantially parallel in the front-rear and left-right directions. The main body portion 50B is manufactured by extrusion molding.

[0220] The main body portion 50B has a horizontal plate portion 516B at its outer end. The horizontal plate portion 516B is a horizontal plate-shaped member that extends in the front-rear direction. The horizontal plate portion 516B is provided along the entire length of the main body portion 50B.

[0221] The horizontal plate portion 516B, like the horizontal plate portion 412B, is located outside the packing 8 when assembled in the refrigeration device 1B. The horizontal plate portions 516B of the second frame elements 5C and 5D, together with the horizontal plate portions 412B of the first frame elements 4C and 4D, constitute the outer annular portion 314B.

[0222] The upper surface of the horizontal plate portion 516B is a horizontal plane. Therefore, the upper surface of the outer annular portion 314B is also a horizontal plane. The upper surface of the outer annular portion 314B is sometimes referred to as the annular horizontal plane. The horizontal plate portion 516B can receive dew 84 (see Figure 17) that drips from the outer edge of the packing 8.

[0223] In this embodiment, the main body 50B has a groove 516a on the upper surface of the horizontal plate portion 516B. The groove 516a is formed by a recess that is recessed downward from the upper surface of the horizontal plate portion 516B. The groove 516a is provided along the entire length of the horizontal plate portion 516B in the front-rear direction.

[0224] The grooves 516a of the second frame elements 5C and 5D, together with the grooves 412a of the first frame elements 4C and 4D, constitute the annular groove 314a. Each of the grooves 516a corresponds to an example of a groove.

[0225] The groove 516a is located outside the packing 8 in the assembled state and is positioned along the outer edge of the packing 8. Therefore, the annular groove 314a is also located outside the packing 8 and is positioned along the outer edge of the packing 8.

[0226] Such grooves 516a can receive and temporarily store dew 84 (see Figure 17) that drips from the outer edge of the packing 8 when the refrigeration device 1B is in use. In this embodiment, the grooves 516a are provided in the part of the refrigeration device 1B that is exposed to the outside air. That is, the annular grooves 314a are provided around the entire circumference in the part of the refrigeration device 1B that is exposed to the outside air. As a result, the dew 84 stored in the grooves 516a evaporates easily.

[0227] Furthermore, the groove for receiving the dew 84 may be provided in a part other than the outer breaker 31B. For example, the groove may be provided in a part of the box 21 that is located outside the packing 8. Specifically, the groove may be provided on the upper surface 211c of the outer box 211 (see Figure 17) that is located outside the packing 8.

[0228] In this case, the horizontal plate portion 516B of the outer breaker 31B may be omitted. Such an upper surface 211c corresponds to an example of an outer annular portion. Furthermore, the upper surface 211c is a horizontal plane. Moreover, the upper surface 211c is provided in a position in the box portion 21 that is exposed to the outside air. Such a groove can also receive and temporarily store dew 84 (see Figure 17) that drips from the outer edge of the packing 8.

[0229] The configuration of the second frame elements 5C and 5D, other than the groove 516a, is the same as the configuration of the second frame elements 5A and 5B in the above-described embodiment 1. Therefore, the description of the second frame elements 5A and 5B in the above-described embodiment 1 may be appropriately adapted and used to describe the configuration of the second frame elements 5C and 5D, other than the groove 516a.

[0230] Furthermore, the configuration and operation / effects of the refrigeration device 1B of this embodiment are the same as those of the refrigeration device 1 in the above-described embodiment 1. Therefore, the description of the configuration of the refrigeration device 1B of this embodiment, other than the first frame elements 4C, 4D and the second frame elements 5C, 5D, may be appropriately adapted from the description of the configuration of the configuration of the refrigeration device 1B other than the first frame elements 4A, 4B and the second frame elements 5A, 5B in the above-described embodiment 1.

[0231] (Note) The constant temperature device according to the present invention is not limited to the refrigeration device 1 according to the above embodiment, but can be applied to various refrigeration devices. The constant temperature device may be, for example, a refrigeration device in which the storage compartment opens to the front. When applying the present invention to such a refrigeration device, the above description of the embodiment may be appropriately modified and applied. Furthermore, the constant temperature device is not limited to a refrigeration device, but may be, for example, a culture device. The term "constant temperature device" means a device that has the function of maintaining a constant environment (e.g., temperature and / or humidity) inside the storage compartment.

[0232] All disclosures in the specification, drawings, and abstract contained in the Japanese application No. 2024-171152, filed on 30 September 2024, are incorporated herein by reference.

[0233] The constant temperature device according to the present invention is not limited to refrigeration devices, but can be applied to various constant temperature devices including culture devices.

[0234] 1, 1B Refrigeration unit 2 Main body 21 Box 210 Inner box 210a Storage compartment 211 Outer box 211a Storage space 211b Space 211c Top surface 23 Inner door 24 Outer door 241 Door side panel 242 Door side plane 3 Box side breaker 30 Inner breaker 301a, 301b First frame element 302a, 302b Second frame element 303a, 303b, 303c, 303d Corner element 31 Outer breaker 311 Box side inclined surface 312 Box side plane 313 Inner door support surface 314 Outer annular part 314a Annular groove 4A, 4B, 4C, 4D First frame element 40 Main body 401 First box side inclined surface 402 First locking part 403 Second locking part 404, 405 First boss 406, 407 First inclined end face 408, 409 First plane 410, 411 First through hole 412, 412B Horizontal plate part 412a Groove part 5A, 5B, 5C, 5D Second frame element 50, 50B Main body part 501 Second box side inclined surface 502 First locking part 503 Second locking part 504, 505 Second boss 506, 507 Second inclined end face 508, 509 Second plane 510, 511 Second through hole 512, 513 Seat surface part 514, 515 Relief part 516, 516B Horizontal plate part 516a Groove part 61 First screw 7 Door side breaker 71 Inclined plate section 72 Cushioning plate section 73 Flat plate section 701 Door-side inclined surface 8 Packing 81 Seal section 82 First locking section on packing side 83 Second locking section on packing side 84 Dew 801a, 801b, 801c, 801d, 801e Row of seal sections 9 Machine storage section

Claims

1. A constant temperature device comprising: a box portion having a storage compartment opening in a first direction; an annular first inclined surface surrounding the storage compartment, with its inner edge inclined such that it is located on the side of the first direction relative to its outer edge; a door portion having an annular second inclined surface facing the first inclined surface and closing the opening of the storage compartment; and a packing arranged along the first inclined surface and sandwiched between the first and second inclined surfaces.

2. The constant temperature device according to claim 1, wherein the packing is fixed to the first inclined surface.

3. The constant temperature device according to claim 2, wherein the box portion has an annular first plane parallel to a plane perpendicular to the first direction on the inside of the first inclined surface, and the door portion has a second plane facing the first plane with a predetermined gap between them.

4. The constant temperature device according to claim 1, wherein the box portion comprises an inner box having the storage compartment, an outer box housing the inner box, and a box portion side annular member connecting the end of the inner box in the first direction and the end of the outer box in the first direction, and the first inclined surface is provided on the box portion side annular member.

5. The constant temperature apparatus according to claim 4, wherein the box portion or the box portion side annular member has an outer annular portion located outside the packing, and the outer annular portion has a groove on the first direction side surface that follows the outer edge of the packing.

6. The constant temperature apparatus according to claim 5, wherein the first direction is upward, and the groove is formed by an annular recess formed on the upper surface of the outer annular portion.

7. The constant temperature apparatus according to claim 6, wherein the upper surface of the outer annular portion is a horizontal plane.

8. The constant temperature device according to claim 5, wherein the groove is provided in a position that is exposed to the outside air in the member on which the groove is provided.

9. The constant temperature apparatus according to claim 4, wherein the box-side annular member comprises an inner annular member fixed to the inner box and an outer annular member surrounding the inner annular member from the outside and fixed to the outer box, and the first inclined surface is provided on the outer annular member.

10. The constant temperature device according to claim 9, wherein the box portion has an annular first plane on the inside of the first inclined surface that is parallel to a plane perpendicular to the first direction, the first plane is provided on the inner annular member, and the door portion has a second plane that faces the first plane at a predetermined distance.

11. The constant temperature device according to claim 1, wherein the door portion has a door-side annular member provided on the inner surface of the door portion, and the door-side annular member has the second inclined surface and an annular door-side sealing portion that abuts the end of the packing in the first direction.

12. The constant temperature apparatus according to claim 1, wherein the inclination angle θ of the first inclined surface with respect to the first direction is 40° ≤ θ ≤ 50°.

Images