WO2017175402A1

WO2017175402A1 - Door device for cooling storage

Info

Publication number: WO2017175402A1
Application number: PCT/JP2016/075953
Authority: WO
Inventors: 慎哉坂野; 鈴木　義康; 祐基中村; 石川　享
Original assignee: ホシザキ株式会社
Priority date: 2016-04-07
Filing date: 2016-09-05
Publication date: 2017-10-12
Also published as: CN108603714A; CN108603714B; JP6695198B2; JP2017187240A

Abstract

This door device for cooling storage is characterized by comprising a pair of heat insulation doors 15A, 15B that are double-door style and that enable the opening/closing of an opening 10A provided in a storage body 10 of a refrigerator 1, and center seals 40 that seal between the pair of heat insulation doors 15a, 15b, wherein: each center seal 40 includes a seal body 41 that comes into contact with another center seal 40, a fin part 42 that extends from the seal body 41 to the open-close axis side of the relevant heat insulation door 15A, 15B and partitions the inside and outside of the refrigerator, a support part 43 that extends from the seal body 41 toward the inside of the refrigerator, and a second lip part 45 that extends from the tip of the support part 43 to the open-close axis side and covers the fin part 42 from inside of the refrigerator; the second lip part 45 is formed such that the tip is spaced apart, toward the inside of the refrigerator, from the fin part 42 and the relevant heat insulation door 15A, 15B; and a tip part 45A of the second lip part 45 being a highly rigid structure compared to a base part 45B of the second lip part 45.

Description

Cooling storage door device

The present invention relates to a door device for a cooling storage.

2. Description of the Related Art Conventionally, there is known a cooling storage door device including a pair of left and right double-spread type heat insulating doors provided in a storage body and a center seal for sealing between both heat insulating doors (see, for example, Patent Document 1). The center seal described in Patent Document 1 has a seal main body and a sub lip (hereinafter referred to as “fin portion”) projecting from the seal main body to the open / close shaft side of the heat insulating door. Is in contact with the packing of the heat insulating door and separates the interior and the exterior.

JP 2013-88025 A

(Problems to be solved by the invention)
According to the door device described in Patent Document 1 described above, since outside air is arranged outside the fin portion, when the temperature of the fin portion falls below the dew condensation temperature, dew condensation occurs on the outside surface of the fin portion. There is concern about the situation where condensation occurs on the floor where the cooling storage is installed. By the way, there is a case where cold air flows from the inside of the cooling storage to the fin portion. In this case, since the temperature of the fin portion is easily lowered to the dew condensation temperature or less by the cold air directly hitting the fin portion, the dew condensation is more likely to occur.

The present invention has been completed based on the above-described circumstances, and an object thereof is to suppress a situation in which condensation occurs in the center seal.

(Means for solving the problem)
In order to solve the above-described problems, the door device for the cooling storage of the present invention includes a pair of double-split heat insulating doors that can open and close an opening provided in the storage main body of the cooling storage, and each of the pair of heat insulating doors. A center seal that seals between the pair of heat insulation doors, and the center seal provided on one heat insulation door of the pair of heat insulation doors is provided at an opening / closing side end of the one heat insulation door. A seal main body that contacts the center seal provided on the other heat insulating door, and extends from the seal main body to the open / close shaft side of the one heat insulating door on the inner side of the opening / closing side end and extends A fin portion in which the outer side surface of the end portion is in contact with the one heat insulating door and partitions the inside and the outside of the chamber, an extending portion extending from the seal body to the inside of the chamber, and a tip of the extending portion Extending to the opening and closing shaft side, the fin portion And a shielding part that shields the fin part from the cold air flowing from the inside to the fin part by covering from the inside, and the shielding part has a tip at the inside from the fin part and the one heat insulating door. The distal end portion of the shielding portion has a higher rigidity than the proximal end portion of the shielding portion.

According to the above configuration, it is possible to suppress a situation in which cold air flowing from the inside of the cabinet toward the fin portion touches the fin portion by the shielding portion. For this reason, the temperature of a fin part cannot fall easily compared with the structure which does not provide a shielding part, and can suppress the situation where dew condensation arises in the surface of the outside of a fin part.

In the above configuration, when one of the heat insulating doors is opened, the space between the shielding portion and the fin portion is arranged outside the cabinet, and outside air enters the space. When one of the heat insulating doors is closed in this state, the outside air that has entered the space is arranged in the cabinet. If the tip of the shielding part is in contact with the fin part or one of the heat insulating doors, the outside air tends to stay in the space between the shielding part and the fin part, and the relatively warm outside air and the cool air in the cabinet Due to the temperature difference, there is a possibility that condensation occurs on the shielding part. As in the above configuration, by separating the tip of the shielding portion from the fin portion and one of the heat insulating doors to the inside of the cabinet and providing a gap, outside air that has entered the space between the shielding portion and the fin portion is stored through the gap. It is discharged inside and mixes with the air in the warehouse. As a result, it is possible to suppress the occurrence of condensation on the shielding part.

In addition, the larger the gap between the tip of the shielding part and the fin part (or the heat insulating door), the easier the cold air in the cabinet enters between the shielding part and the fin part from the gap, and the temperature of the fin part decreases. It becomes easy. On the other hand, when the gap is small, it is difficult to release outside air through the gap. For this reason, it is preferable that the dimension of the gap is designed with an appropriate value that allows the outside air to be released while preventing the intrusion of cold air. In the said structure, it is set as the structure whose rigidity of the front-end | tip part of a shielding part is high compared with a base end part. For this reason, the front-end | tip part of a shielding part deform | transforms and the situation which an error produces in the magnitude | size of the said clearance gap can be suppressed. As a result, the size of the gap between the tip of the shielding part and the fin part (or the heat insulating door) can be reliably set with the dimensions as designed, and the occurrence of condensation is suppressed for both the shielding part and the fin part. can do.

The shielding portion includes a first extending portion extending from the distal end of the extending portion toward the opening / closing axis, and a second extending portion extending from the distal end of the first extending portion toward the opening / closing axis. The second extending portion is inclined with respect to the first extending portion in a direction toward the outside of the warehouse as it goes toward the opening / closing axis, and the tip portion of the shielding portion is the first extending portion. It can be comprised by the front-end | tip part of the extension part, and the said 2nd extension part.

In the above configuration, the shielding portion includes the first extension portion and the second extension portion, and the second extension portion is inclined with respect to the first extension portion. Thereby, the front-end | tip part of a shielding part can be made into a bending shape, and rigidity can be made high compared with what makes | forms linear form. Further, by configuring the shielding portion from the first extending portion and the second extending portion, for example, the position of the tip of the shielding portion is changed compared to a configuration in which the shielding portion extends straight from the tip of the extending portion. Therefore, the space between the shielding part and the fin part can be increased, and the heat insulation can be further increased. As a result, when cold air touches the shielding part from the inside of the warehouse, the situation where the temperature of the fin part decreases can be more reliably suppressed, and the occurrence of condensation can be suppressed.

The seal body, the fin portion, the extending portion, and the base end portion of the shielding portion are integrally formed of a soft resin, and the distal end portion of the shielding portion is more than the base end portion. It can be made of a hard resin having high rigidity.

In the above configuration, since the tip of the shielding part is formed of a hard resin, the rigidity can be increased as compared with the case of using a soft resin. Further, in the center seal, since the portion other than the tip of the shielding portion is made of a soft resin, the center seal can be configured to be more easily deformed, and the sealing performance can be enhanced. In particular, when the seal body is made of a soft resin, the sealing performance when contacting the other center seal can be further increased.

(The invention's effect)
According to the present invention, it is possible to suppress the occurrence of condensation in the center seal.

Front view of the refrigerator according to the first embodiment The front view which shows the state which removed the heat insulation door in the refrigerator of FIG. Perspective view showing the back of the insulated door Sectional view showing the vicinity of the open / close end of the heat insulation door (cross-sectional view taken along line IV-IV in FIG. 1) The figure which shows the center seal | sticker shown in FIG. 4 (side view seen from the one end side of a longitudinal direction) Sectional drawing which shows the center seal which concerns on Embodiment 2. FIG. Sectional drawing which shows the center seal | sticker which concerns on Embodiment 3. FIG.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. First, the overall configuration of the cooling storage according to the present embodiment will be described. Here, a center pillar-less four-door refrigerator 1 will be described as an example of a cooling storage. As shown in FIG. 1, the refrigerator 1 includes a storage body 10, two sets of door devices 11 provided above and below the front surface of the storage body 10 (the front surface in FIG. 1), and the storage body 10. And a leg 13 provided at the four corners of the bottom surface of the storage body 10.

As shown in FIG. 2, the storage body 10 is configured by a heat insulating box that opens to the front side (front side of the paper), and two openings 10 A are formed vertically by columnar members 21. Each storage chamber 14 is not provided with a columnar member (so-called center pillar) extending in the vertical direction at the center in the left-right direction. The machine room 12 accommodates a cooling device (not shown) constituting a cooling cycle. The cooling device includes an evaporator, a circulation fan, and the like. When the cooling device is operated, air is cooled by the evaporator, and the cooled air (cold air) is stored by being circulated and supplied into the storage chamber 14 by the circulation fan. The inside of the chamber 14 is cooled.

Next, the door device 11 will be described. As shown in FIG. 1, each door device 11 includes a pair of left and right double-split

heat insulating doors

15A and 15B, and a center seal 40 mounted over substantially the entire height of each open / close side end of the heat insulating doors 15A and 15B. 40. The pair of

heat insulating doors

15A and 15B are formed symmetrically. The left heat insulating door 15A is pivotally supported by the storage main body 10 so that the left and right end portions thereof can be opened and closed by a hinge 16A. Similarly, the right heat insulating door 15B is pivotally supported on the storage body 10 by hinges 16B at the top and bottom of the right end. Accordingly, the pair of

heat insulating doors

15A and 15B is configured to be able to open and close the opening 10A by rotating about the corresponding hinges 16A and 16B as the rotation shaft. In addition, a handle 17 for opening and closing operation is provided at a position adjacent to each other on the front surface of each heat insulating door 15.

In the following description, the side where the hinges 16 are provided on both sides in the left and right direction in each of the

heat insulating doors

15A and 15B is referred to as the opening / closing axis side. Further, of the left and right end portions of the

heat insulating doors

15A and 15B, the end portion where the hinge 16 is not provided, in other words, the end portion facing the heat insulating door on the other side is referred to as the open / close side end portion. . For example, in the case of the right heat insulating door 15B, the right side is the opening / closing axis side, and the left end is the opening / closing side end. In a state where the pair of

heat insulating doors

15A and 15B are closed, the center seal 40 provided in each of the pair of

heat insulating doors

15A and 15B is in contact with each other, so that the space between the pair of

heat insulating doors

15A and 15B is sealed. It has become.

Although the pair of

heat insulating doors

15A and 15B have a symmetrical shape, the other configurations are the same. In the following description, the configuration of the right heat insulating door 15B will be mainly described. The heat insulating door 15B includes a metal exterior plate 18 (see FIG. 1) such as a stainless steel plate, a synthetic resin interior plate 19 (see FIG. 3), and a packing 20 (see FIG. 3) formed in a rectangular frame shape. ) And a holding member 24 (see FIG. 4) that holds the center seal 40. As shown in FIG. 4, the heat insulation door 15 is comprised by the exterior board 18 and the interior board 19 at box shape, and the heat insulation material which is not shown in figure which consists of foaming resin, such as hard polyurethane, is foam-filled by the hollow part inside. .

As shown in FIG. 4, a packing mounting groove 15 C in which the packing 20 is mounted is formed in a rectangular frame shape along the outer periphery of the inner plate 19 at the outer edge portion of the inner plate 19. The packing 20 is formed of an elastic member such as a soft resin. The packing 20 is in close contact with the opening edge of the front surface of the storage body 10 when the door is closed, and seals between the heat insulating door 15B and the storage body 10. However, the portion of the packing 20 that extends along the side on the opening / closing side end portion side does not seal between the heat insulating door 15B and the storage body 10, and the fin portion 42 ( 4) is slidably touching.

As shown in FIG. 4, the packing 20 includes a packing body 20 A and mounting legs 20 B mounted in the packing mounting groove 15 C. A first magnet chamber 20C is formed at a position inside the packing body 20A. A flat prismatic first magnet 25 is inserted into the first magnet chamber 20C.

The holding member 24 is a member that holds the center seal 40. As shown in FIG. 4, the holding member 24 includes a base 24 A and a base 24 A that are attached to an end face of the opening / closing side end portion of the heat insulating door 15 and facing the other heat insulating door 15 over the entire height. And a slide lid 24B attached to the base 24A with a space therebetween. The base 24A is fixed to the end face described above with screws 51. A second mounting groove 26, a heater holding groove 27, a latching portion 28, and a latching portion 29 are formed in the base 24A. The second mounting groove 26 is a groove into which a latching portion 41F (see FIG. 5) formed in the center seal 40 is fitted. The second mounting groove 26 is located on the inner side of the opening / closing side end of the heat insulating door 15.

The heater holding groove 27 is provided outside the second mounting groove 26. A heater 30 for preventing condensation is inserted into the heater holding groove 27. As shown in FIG. 3, the lead wire 52 connected to the heater 30 passes through the inside of the heat insulating door 15 from the heater 30 and extends out of a hole for attaching the hinge 16. The latching portion 28 is a protruding protrusion that fits in a latching groove 32 formed in the slide lid 24B and holds the slide lid 24B. Further, the latching portion 29 is a protruding protrusion that fits in the latching groove 33 formed in the slide lid 24B and holds the slide lid 24B.

The first lid 31, the latching groove 32, and the latching groove 33 are formed in the slide lid 24 B. The first mounting groove 31 is a groove into which a latching portion 41 C (see FIG. 5) formed in the center seal 40 fits. The latch groove 32 is a groove into which the latch portion 28 formed in the base 24A is fitted, and the latch groove 33 is a groove into which the latch portion 29 formed in the base 24A is fitted. The slide lid 24B is held by the base 24A by engaging the latching

portions

28 and 29 of the base 24A with the latching

grooves

32 and 33, respectively. The slide lid 24B is attached to the base 24A by being slid into the base 24A from one side in the height direction (the direction perpendicular to the paper surface in FIG. 4).

Next, the configuration of the center seal 40 will be described. As shown in FIG. 5, the center seal 40 includes a seal body 41, a fin portion 42, a support portion 43, a first lip portion 44, and a second lip portion 45. As shown in FIG. 4, the seal body 41 abuts against the center seal 40 mounted on the mating heat insulating door 15 A and seals between the open / close end portions of the two heat insulating doors 15 A and 15 B. The center seal 40 is made of, for example, a soft resin such as an olefin elastomer, and has a structure in which the seal body 41 is easily deformed toward the mating center seal 40. FIG. 4 shows a state in which the seal body 41 is deformed toward the mating center seal 40.

As shown in FIG. 5, the seal body 41 includes a contact portion 41A, a first extension portion 41B, and a second extension portion 41E. The abutting portion 41A is a portion that abuts on the center seal 40 attached to the heat insulating door 15 on the other side. As shown in FIG. 4, the abutting portion 41 A is located on the inner side of the opening / closing side end of the heat insulating door 15 B and on the opposite side of the heat insulating door 15 A from the opening / closing side end. As shown in FIG. 5, the contact portion 41A is formed in a rectangular tube shape, and the inner space forms a second magnet chamber 41D. A flat prismatic second magnet 46 (see FIG. 4) is inserted into the second magnet chamber 41D so as to attract the second magnet 46 on the other side. The form of attracting each other is, for example, a form of N pole if the second magnet 46 on the other side is the S pole.

As shown in FIG. 5, the first extending portion 41B is inclined toward the heat insulating door 15B from the end on the outer side of the contact portion 41A toward the outside of the storage. The extended portion of the first extending portion 41B is bent toward the heat insulating door 15B, and a latching portion 41C is integrally formed at the tip portion thereof. The second extending portion 41E extends from the contact portion 41A to the opening / closing axis side of the heat insulating door 15B from the opening / closing side end portion of the heat insulating door 15B to the opening / closing shaft side of the heat insulating door 15B, and the tip extended from the packing 20 as shown in FIG. It is bent in the front direction and fixed to the holding member 24. Specifically, as shown in FIGS. 4 and 5, the second extending portion 41 E is a linear portion that extends from the end on the inner side of the contact portion 41 A toward the opening / closing axis substantially parallel to the heat insulating door 15 B. 47 and a curved portion 48 that is curved so as to protrude from the distal end portion of the linear portion 47 toward the opening / closing axis when attached to the heat insulating door 15B (see FIG. 4). A latching portion 41F similar to the latching portion 41C is integrally formed at the distal end portion of the curved portion 48. In addition, in the state which is not attached to the heat insulation door 15B, the curved part 48 is extended in the form which goes to the seal main body 41 side (left side of FIG. 5) as it goes to the outer side of a warehouse, as shown in FIG.

The fin part 42 separates the inside from the outside. As shown in FIG. 4, the fin portion 42 extends from the seal body 41 to the opening / closing shaft side of the heat insulating door 15 B from the opening / closing side end portion of the heat insulating door 15 B (one heat insulating door) and extends to the opening / closing shaft side of the heat insulating door 15 B. The outer surface is in contact with the packing 20 (a part of the heat insulating door 15). Specifically, as shown in FIG. 4, when the fin portion 42 is attached to the heat insulating door 15 B, the opening and closing shaft side is substantially parallel to the heat insulating door 15 B from the tip portion of the linear portion 47 of the second extending portion 41 E. It extends to. In other words, it can be said that the fin portion 42 is obtained by extending the linear portion 47 toward the opening / closing axis. The fin portion 42 is thinner than the straight portion 47. In addition, as shown in FIG. 5, the fin part 42 (it attaches | subjects code | symbol 42A) of a natural state (state which is not attached to the heat insulation door 15B) is a warehouse outer side (heat insulation) as it goes to the opening-and-closing axis side (right side of FIG. 5). It extends in a form toward the door 15B side, the lower side of FIG. Moreover, in FIG. 5, the fin part 42 of the state attached to the heat insulation door 15B is illustrated with the dashed-two dotted line. In the state where the center seal 40 is attached to the heat insulating door 15B, as shown in FIG. 4, the fin portion 42 is elastically deformed by being pressed by the packing 20, and extends along the left-right direction. It is held in a posture. Accordingly, the fin portion 42 is configured to come into close contact with the packing 20 by elastically contacting the packing 20.

Further, as shown in FIG. 4, the fin portion 42 is in contact with the packing 20 so that the outer surface of the tip portion is slidable. The width of the fin portion 42 in contact with the packing 20 is such that the tip of the fin portion 42 is in contact with the packing 20 even if the

heat insulating doors

15A and 15B are closed and the seal body 41 is deformed toward the center seal 40 on the other side. It is the dimension which can maintain the state which is being.

As shown in FIG. 4, the center seal 40 has a height so that the latching portion 41C fits into the first mounting groove 31 of the slide lid 24B and the latching portion 41F fits into the second mounting groove 26 of the base 24A. It is slid into the holding member 24 from the direction and held by the holding member 24. When the center seal 40 is held by the holding member 24, a first space 55 surrounded by the seal body 41 and the holding member 24 is formed, and the seal body 41, the fin portion 42, A second space 56 surrounded by the packing 20 (a part of the heat insulating door 15) and the exterior plate 18 (a part of the heat insulating door 15) is formed.

As shown in FIG. 4, when the left and right heat insulating doors 15 are closed, the two second magnets 46 attract each other to deform the seal body 41 toward the center seal 40 on the other side, and the seal body 41 abuts. The portions 41A come into contact with each other, and the gap between the opening and closing side ends of the two

heat insulating doors

15A and 15B is sealed. At this time, the fin portion 42 moves toward the mating center seal 40 while the outer surface of the fin portion 42 is in contact with the packing 20. On the other hand, when the

heat insulating doors

15A and 15B are opened, the attractive force of the two

second magnets

46 and 46 decreases, so that the seal body 41 returns to the original shape by the elastic force. At this time, the fin part 42 moves to the opening / closing axis side while the outer surface is in contact with the packing 20.

The support part 43 (extension part) is a member that supports the first lip part 44 and the second lip part 45. The support part 43 is extended inside the warehouse from the front-end | tip part (a part of seal main body 41) of the linear part 47 of the 2nd extension part 41E. A first lip portion 44 and a second lip portion 45 are integrally formed at the distal end portion of the support portion 43 over the entire height.

The first lip portion 44 is for shielding the contact portion 41A from the cold air flowing from the inner side toward the contact portion 41A. As shown in FIG. 4, the first lip portion 44 is inclined outward from the tip of the support portion 43 toward the heat insulating door 15 A on the other side. The inclination angle of the first lip portion 44 is, for example, 15 degrees, but is not limited to this. In the present embodiment, the tip portions of the two

first lip portions

44 and 44 adjacent to each other when the door is closed are not overlapped, but the tip portions of the two

first lip portions

44 and 44 are overlapped when the door is closed. It may be.

Next, the configuration of the second lip portion 45 (shielding portion) will be described. The 2nd lip part 45 is for shielding the fin part 42 from the cold which flows toward the fin part 42 from the inside of a store | warehouse | chamber. As shown in FIG. 4, the second lip portion 45 extends outward from the tip of the support portion 43 toward the open / close shaft side. As shown in FIG. 4, the tip P 1 of the second lip portion 45 is not in close contact with the fin portion 42 and the packing 20, and is separated from the fin portion 42 and the packing 20 to the inside of the cabinet. The second lip portion 45 covers the entire fin portion 42 as viewed from the inside of the cabinet. That is, when viewed from the inside of the cabinet, the fin portion 42 is covered with the second lip portion 45 so that the whole cannot be seen.

As shown in FIG. 5, the second lip portion 45 includes a first extending portion 61 that extends from the tip of the support portion 43 toward the opening / closing axis, and a second extension that extends from the tip of the first extending portion 61 toward the opening / closing shaft. And an installation part 62. The 1st extension part 61 and the 2nd extension part 62 incline in the form which goes to the warehouse outer side (lower side of FIG. 5), for example toward the opening-and-closing axis side (right side of FIG. 5). The inclination angle D2 of the second extending portion 62 is set to a value larger than the inclination angle D1 of the first extending portion 61. In other words, the 2nd extension part 62 shall incline with respect to the 1st extension part 61 in the form which goes to the warehouse outer side as it goes to the opening-and-closing axis side.

The tip P1 of the second lip portion 45 (tip of the second extending portion 62) is configured to be separated from the fin portion 42 and the packing 20 (part of the heat insulating door 15B) to the inside of the warehouse. That is, a gap S1 is formed between the front end P1 and the fin portion 42 and between the front end P1 and the packing 20 in the front-rear direction (vertical direction in FIG. 5). Note that the inclination angle D1 of the first extending portion 61 may be 0 degrees. That is, the first extending portion 61 may not be inclined with respect to the left-right direction, and may extend along a direction that coincides with the left-right direction (the extending direction of the fin portion 42).

The extension length of the first extension part 61 is, for example, greater than the extension length of the second extension part 62. For this reason, the distal end portion 45 A of the second lip portion 45 has a bent shape constituted by the distal end portion 61 A of the first extending portion 61 and the second extending portion 62. On the other hand, the base end portion 45 B of the second lip portion 45 has a linear shape formed by the first extending portion 61. For this reason, the distal end portion 45A having a bent shape has a higher rigidity than the proximal end portion 45B having a linear shape.

Next, the effect of this embodiment will be described. According to the present embodiment, the second lip portion 45 can suppress a situation in which the cold air flowing from the inner side toward the fin portion 42 touches the fin portion 42. For this reason, compared with the structure which does not provide the 2nd lip part 45, the temperature of the fin part 42 does not fall easily, and can suppress the situation where dew condensation arises on the surface of the fin part 42 outside the warehouse.

Further, in the present embodiment, when the heat insulating door 15B is opened, the space S2 between the second lip portion 45 and the fin portion 42 is arranged outside the cabinet, and outside air enters the space S2 (see FIG. 5). When the heat insulating door 15B is closed in this state, the outside air that has entered the space S2 is arranged in the cabinet. If the tip P1 of the second lip portion 45 is in contact with the fin portion 42 (or the packing 20), outside air tends to stay in the space S2 between the second lip portion 45 and the fin portion 42, and relatively Condensation may occur in the second lip portion 45 due to a temperature difference between the warm outside air and the cool air in the cabinet. Like this embodiment, the front-end | tip P1 of the 2nd lip | rip part 45 is spaced apart from the fin part 42 and the packing 20 inside the store | warehouse | chamber, and external space which entered the space S2 enters the store | chamber interior through the clearance gap S1 by providing the clearance gap S1. Released and mixed with the air in the cabinet. As a result, it is possible to suppress the occurrence of condensation on the second lip portion 45.

In addition, the larger the gap S1 between the tip P1 of the second lip 45 and the fin portion 42 (or the packing 20), the cooler the interior of the chamber between the second lip 45 and the fin portion 42 from the gap S1. It becomes easy to invade and the temperature of the fin part 42 is likely to decrease. On the other hand, when the gap S1 is small, it is difficult to release the outside air in the space S2 through the gap S1. For this reason, it is preferable that the size of the gap S1 is designed with an appropriate value that allows the outside air in the space S2 to be released while preventing the intrusion of cold air. For example, if the gap S1 is set to around 5 mm (more specifically, within a range of 3 to 7 mm), it is possible to suppress the occurrence of condensation on both the second lip portion 45 and the fin portion 42. It is not limited.

In this embodiment, the rigidity of the distal end portion 45A of the second lip portion 45 is higher than that of the proximal end portion 45B. For this reason, the front end portion 45A of the second lip portion 45 is deformed, and a situation in which an error occurs in the size of the gap S1 can be suppressed. Thereby, the magnitude | size of the clearance gap S1 can be set reliably with the dimension as designed, and generation | occurrence | production of dew condensation can be suppressed about both the 2nd lip | rip part 45 and the fin part 42. FIG. The center seal 40 can be formed by, for example, extrusion molding. However, in the case of using extrusion molding, the center seal 40 is contracted by cooling after the molding, and the second lip portion 45 is compressed. If the rigidity of the tip portion 45A is low, there is a concern that the tip portion 45A is deformed so as to wave in the longitudinal direction. By increasing the rigidity of the tip 45A, it is possible to suppress a state of deformation such as undulation, and to make the size of the gap S1 constant over the entire length in the longitudinal direction of the center seal 40 at a designed size. Can do.

The second lip 45 includes a first extension 61 extending from the tip of the support 43 toward the opening / closing axis, a second extension 62 extending from the tip of the first extension 61 toward the opening / closing axis, The second extending portion 62 is inclined with respect to the first extending portion 61 in a form toward the outside of the warehouse as it goes toward the opening / closing axis, and the tip 45A of the second lip portion 45 is The first extending portion 61 is constituted by the distal end portion and the second extending portion 62.

In the above configuration, the second lip portion 45 includes the first extending portion 61 and the second extending portion 62, and the second extending portion 62 is inclined with respect to the first extending portion 61. Thereby, the front end portion 45A of the second lip portion 45 can be bent, and the rigidity is made higher than that of the second lip portion having a linear shape (two-dot chain line in FIG. 5 and denoted by reference numeral 5). Can do. Further, by configuring the second lip portion 45 from the first extending portion 61 and the second extending portion 62, for example, as compared with a configuration (second lip portion 5) extending straight from the tip of the support portion 43. The space S2 between the second lip portion and the fin portion 42 can be increased without changing the position of the tip P1 (the size of the gap S1), and the heat insulation can be further increased. Specifically, as shown in FIG. 5, the second lip portion 45 can make the space S 2 larger by the area A 1 shown in FIG. 5 than the second lip portion 5 of the comparative example. As a result, when the cold air touches the second lip portion 45 from the inside of the warehouse, the cold air is more difficult to be transmitted to the fin portion 42, and the temperature of the fin portion 42 can be more reliably suppressed. Can be suppressed.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In the present embodiment, the configuration of the center seal is different from that of the above embodiment. Note that the same portions as those in the above embodiment are denoted by the same reference numerals and redundant description is omitted. In the present embodiment, as shown in FIG. 6, the second lip portion 145 of the center seal 140 has a linear shape extending from the support portion 43. The seal body 41, the fin portion 42, the support portion 43, and the base end portion 145B of the second lip portion 145 are integrally formed of a soft resin (for example, olefin elastomer). On the other hand, the distal end portion 145A of the second lip portion 145 is formed of a hard resin having higher rigidity than the proximal end portion 145B. An example of the material of the tip portion 145A is hard polypropylene. Such a center seal 140 can be formed by, for example, two-color extrusion molding of a soft resin and a hard resin. Further, the materials of the distal end portion 145A and the proximal end portion 145B are not limited to those described above.

In the present embodiment, the tip portion 145A of the second lip portion 145 is formed of a hard resin, so that the rigidity can be increased as compared with the case of using a soft resin. As a result, it is possible to suppress the situation where the tip portion 145A is deformed and the tip P2 of the second lip portion 145 is displaced, and the dimensional accuracy of the gap S3 between the second lip portion 145 and the fin portion 42 can be increased. it can. In FIG. 6, reference numeral 42 A is attached to the fin portion 42 in the natural state, and the fin portion 42 in a state attached to the heat insulating door 15 B is illustrated by a two-dot chain line. Further, in the center seal 140, since the portion other than the tip portion 145A of the second lip portion 145 is made of a soft resin, the center seal 140 can be configured to be more easily deformed, and the sealing performance is enhanced. be able to. In particular, when the seal body 41 is made of a soft resin, it is possible to further improve the sealing performance when contacting the other center seal.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. In the present embodiment, the configuration of the center seal is different from that of the above embodiment. Note that the same portions as those in the above embodiment are denoted by the same reference numerals and redundant description is omitted. In the present embodiment, as shown in FIG. 7, the second lip portion 245 of the center seal 240 includes a first extending portion 261, a second extending portion 262 that is inclined with respect to the first extending portion 261, have. And the 1st extension part 261 is formed with soft resin, and the 2nd extension part 262 is formed with hard resin. In this way, the rigidity of the tip end portion of the second lip portion 245 can be further increased.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The shape of the seal body 41 described in the above embodiment is an example. The shape of the seal main body 41 may be any shape as long as the shape can seal between the opening and closing side ends of the

heat insulating doors

15A and 15B by contacting the center seal 40 on the other side.
(2) In the above embodiment, the case where the fin portion 42 extends from the tip end portion of the linear portion 47 of the second extending portion 41E toward the opening / closing axis has been described as an example. However, the fin portion 42 does not necessarily extend from the tip portion of the linear portion 47, and for example, it may branch from the middle of the curved portion 48 and extend toward the opening / closing axis.
(3) In the above embodiment, the configuration in which the first lip portion 44 and the second lip portion 45 share one support portion 43 is exemplified. However, the 2nd lip part 45 should just be a form which covers the fin part 42 from a warehouse inner side, for example, the 1st lip part 44 and the 2nd lip part 45 may be supported by the separate support part.
(4) In the above embodiment, the configuration in which the outer surface of the fin portion 42 is in contact with the packing 20 is exemplified, but the present invention is not limited to this. For example, when the packing 20 is not arranged between the fin portion 42 and the interior plate 19, the outer surface of the fin portion 42 may be in contact with the interior plate 19.
(5) In the above embodiment, the four-door refrigerator 1 in which two pairs of left and right

heat insulating doors

15A and 15B are provided as an upper and lower pair as a cooling storage has been described as an example, but the present invention is not limited to this. The cooling storage may be, for example, a two-door refrigerator provided with a pair of left and right

heat insulating doors

15A and 15B. Moreover, although the refrigerator was demonstrated to the example as a cooling storage in the said embodiment, a freezer may be sufficient as a cooling storage.
(6) The first embodiment exemplifies a configuration in which the distal end portion 45A of the second lip portion 45 is bent so that the rigidity is higher than that of the proximal end portion. In the second embodiment, the second lip is illustrated. Although the configuration in which the rigidity is increased by using the hard resin at the tip portion 145A of the portion 145 is not limited to this. For example, by increasing the thickness of the distal end portion of the second lip portion compared to the thickness of the proximal end portion, or by providing a rib at the distal end portion of the second lip portion, You may make rigidity higher than a base end part.

DESCRIPTION OF SYMBOLS 1 ... Refrigerator (cooling storage), 10 ... Storage body, 10A ... Opening, 11 ... Door device, 15A, 15B ... Thermal insulation door, 40, 140, 240 ... Center seal, 41 ... seal body, 42 ... fin part, 43 ... support part (extension part), 45, 145 ... second lip part (shielding part), 45A, 145A ...

second lip

45B, 145B ... the base end part of the second lip part (base end part of the shield part), 61 ... the first extension part, 62 ... the first part 2 Extension part, P1 ... tip of second lip part (tip of shielding part)

Claims

A pair of double-split heat insulating doors that can open and close the opening provided in the storage body of the cooling storage;
A center seal that is provided in each of the pair of heat insulating doors and seals between the pair of heat insulating doors;
The center seal provided on one of the pair of heat insulating doors,
A seal body which is provided at an opening / closing side end of the one heat insulating door and abuts on the center seal provided on the other heat insulating door;
On the inner side of the opening / closing side end, the outer surface of the extended end portion extends from the seal body toward the opening / closing shaft side of the one heat insulating door, and comes into contact with the one heat insulating door. A fin section that partitions the outside,
An extending part extending from the seal body to the inside of the cabinet,
A shielding portion that extends from the distal end of the extension portion toward the opening and closing shaft and shields the fin portion from the cold air flowing from the inner side toward the fin portion by covering the fin portion from the inner side of the chamber;
The shield part is configured such that the tip thereof is separated from the fin part and the one heat insulating door to the inside of the warehouse,
The front part of the said shielding part is a door apparatus of the cooling storehouse which is a structure with high rigidity compared with the base end part of the said shielding part.
The shielding part is
A first extending portion extending from the distal end of the extending portion toward the opening / closing axis;
A second extending portion extending from the tip of the first extending portion toward the opening / closing axis,
The second extending portion is inclined with respect to the first extending portion in a direction toward the outside of the warehouse as it goes toward the opening / closing axis.
2. The cooling storage door device according to claim 1, wherein the front end portion of the shielding portion is configured by a front end portion of the first extension portion and the second extension portion.
The seal main body, the fin portion, the extension portion, and the base end portion of the shielding portion are integrally formed of a soft resin,
3. The cooling storage door device according to claim 1, wherein the distal end portion of the shielding portion is formed of a hard resin having rigidity higher than that of the base end portion.