JP2009066296A - Door structure of showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure of a showcase which prevents condensed water collected on the upper face part of doors slidably opening/closing a front opening from pouring on a user or articles stored in a storage chamber. <P>SOLUTION: In the showcase in which an insulation box 18 having the front opening 18a and an upper frame 50 and a lower frame 56 provided at the inner peripheral upper part and the inner peripheral lower part of the front opening 18a are provided, and doors 22, 32 slidably supported between both frames 50, 56 open/close the front opening 18a, protruding ridges 40, 40 protruding upward at a prescribed height are provided at the front end edge and the rear end edge of the upper face part of the doors 22, 32. By these protruding ridges 40, 40, the condensed water collected on the upper face part can be prevented from flowing out to the front end edge side and the rear end edge side of the doors 22, 32 when opening/closing the doors 22, 32. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door structure of a showcase, and more specifically, condensate water collected on the upper surface of a door that opens and closes a front opening of a heat-insulating box body to a front user side or a rear showcase. It is related with the door structure which did not flow out inside.

In grocery stores, convenience stores, etc., showcases for storing and displaying foods and beverages in a refrigerated state are suitably used. In this showcase, a storage room for display items such as food and beverages is defined inside a heat insulating box formed by filling a foam heat insulating material such as urethane between an interior plate and an exterior plate. In addition, a rectangular opening that opens to the front is opened at the front of the heat insulation box, and a frame is provided on the inner periphery of the front opening so that the door that opens and closes the opening can slide freely on the frame. It is supported (for example, patent document 1).
JP 2006-223360 A

  The door that opens and closes the front opening has a substantially flat upper surface, and when condensed water is generated in the frame due to a temperature difference between the inside and outside of the showcase, the condensed water may accumulate on the upper surface of the door. there were. Condensed water collected on the upper surface of the door in this way flows out of the upper surface due to the operation of opening and closing the door, and is applied to the user when it flows out of the showcase. In the case of flowing into the interior, there is a problem that the article etc. stored inside the showcase gets wet.

  The present invention has been proposed in view of the above-described drawbacks inherent in the prior art, and has been proposed to suitably solve this problem, and is accumulated on the upper surface portion of the door that slidably opens and closes the front opening. An object of the present invention is to provide a door structure for a showcase in which condensed water is not applied to a user or an article stored inside the case.

In order to overcome the above problems and achieve the intended purpose, the door structure of the showcase according to the present invention includes a heat insulating box having a front opening, and an inner peripheral upper portion and an inner peripheral lower portion of the front opening, In a showcase in which an upper frame and a lower frame are provided, and the front opening is opened and closed by a door that is slidably supported between both frames.
The front edge and the rear edge of the upper surface portion of the door are provided with protrusions that protrude upward at a predetermined height along each edge.
Therefore, according to the first aspect of the present invention, it is possible to prevent the condensed water accumulated on the upper surface portion of the door from flowing out to the front end side and the rear end side of the door by the opening and closing operation of the door. It can suppress that the user located in the front end side and the articles | goods accommodated in the store | warehouse | chamber of the rear end side get wet with condensed water.

In the invention according to claim 2, the upper surface portion has a predetermined height upward at a side end portion on the side that contacts the inner surface of the heat insulating box when the door closes the front opening. The gist of the invention is that the side ridges protruding in the above are provided so as to be connected to both the ridges.
Therefore, according to the invention which concerns on Claim 2, when the door opens, the dew condensation water collected on the upper surface part of the door can be prevented from flowing out to the opened front opening side.

  According to the door structure of the showcase according to the present invention, the condensed water collected on the upper surface portion of the door does not wet the user of the showcase or the article stored inside the showcase when the door is opened and closed. .

  Next, the door structure of the showcase according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment. As shown in FIG. 1, a showcase 10 according to an embodiment includes a heat insulating box 18 in which a foam heat insulating material 16 such as urethane is filled between an inner box 12 and an outer box 14 that are opened forward, and the box. It is basically composed of a chassis 20 on which the body 18 is placed. A refrigeration device 62 including a compressor and a condenser is housed in a machine room 60 defined in the chassis 20.

  A cold air circulation device 64 in which a refrigerant is circulated and supplied from the refrigeration device 62 is disposed above the inside of the heat insulation box 18, and the heat insulation box 18 is internally defined by the cold air supplied by the cold air circulation device 64. The storage chamber 21 is configured to be cooled. In the storage chamber 21, shelf members (not shown) in which articles such as foods and beverages are arranged and stored are arranged in multiple stages in the vertical direction. A rectangular front opening 18a that opens to the front is formed in the front portion of the heat insulating box 18, and an upper frame 50, a right frame 52, a left frame 54, and a lower frame are formed in the inner periphery of the front opening 18a. 56 is arranged. Then, the front door 22 and the rear door 32 are supported by the upper frame 50 and the lower frame 56 so as to be slidable in the left-right direction, respectively, so that the front opening 18a can be opened and closed.

  As shown in FIG. 2, the upper frame 50 has U-shaped guide grooves 50a, 50a whose cross section is opened downward, extending in parallel across the entire length in the width direction (left-right direction) adjacent to the front and rear. It is formed to do. And it is comprised so that the upper-end part of each front door 22 and 32 may face each said guide groove 50a and 50a so that a slide is possible. As shown in FIG. 3, the lower frame 56 is spaced apart in the front-rear direction on the upper surface of the bottom plate 56a, and two lower rails 56b, 56b are erected, each extending in parallel in the width direction. A pair of rollers 44 and 44 are provided at the lower ends of the lower end portions of the doors 22 and 32 corresponding to the lower rails 56b so as to be spaced apart from each other in the left-right direction. The front door 22 and the rear door 32 are slidably supported.

  Further, as shown in FIG. 3, a drain outlet 56e is formed at a required position of the bottom plate 56a of the lower frame 56, and the drain outlet 56e is disposed in the machine chamber 60 via a drain pipe 58 or the like. (Not shown). The condensed water that has flowed into the lower frame 56 does not stay in the lower frame 56 but is discharged out of the storage chamber 21 (drain pan) and processed. A plurality of through-holes (not shown) penetrating in the front-rear direction are provided in the lower end portions of the lower rails 56b, 56b so as to be spaced apart in the width direction. Even if it flows in, it is preferably configured to be discharged out of the storage chamber 21. Further, a front rising portion 56c and a rear rising portion 56d are erected over the entire length in the width direction corresponding to the front edge and the rear edge of the bottom plate 56a, respectively, and are placed on the lower frame 56 by the front rising portion 56c. The front rollers 18 and 44 are covered so that they cannot be seen from the front side, and the front rising portions 56c and the rear rising portions 56d cover the lower ends of the doors 22 and 32 from the front and rear, thereby ensuring the sealing of the front opening 18a. It is increasing.

  In the embodiment, the right half of the front door 22 is brought into contact with the inner surface of the right frame 52 (the inner surface of the heat insulating box 18), thereby closing the right half of the front opening 18a. 32 is configured to close the left half of the front opening 18a by abutting the left side surface side of 32 with the inner surface of the left side frame 54 (inner side surface of the heat insulating box 18) (see FIG. 1). And in the state which closed the front opening part 18a with both the doors 22 and 32, the left side rear surface of the front door 22 and the right side front surface of the rear door 32 overlap front and back, and the sealing property of this opening part 18a is ensured. It is like that.

  Here, the front door 22 and the rear door 32 will be described. Since the front door 22 and the rear door 32 have the same structure, the front door 22 will be described as an example.

  The front door 22 includes transparent bodies 30 and 30 made of two transparent rectangular flat plates made of glass, synthetic resin, or the like, and a synthetic resin frame 24 (frame 34 for the rear door 32). The required strength is ensured and the inside is visible from the outside. The frame body 24 includes an upper frame member 26 and a lower frame member 27 that are attached to upper and lower end edges (end edges extending in the left-right direction) of the perspective body 30, and left and right end edges (up-down direction) of the perspective body 30. And a right frame member 28 and a left frame member 29 each having a U-shaped cross-section opened outward. An upper end portion (upper end portions of the upper frame member 26 and the side frame members 28 and 29) is inserted into the front door 22 into a guide groove 50a extending in the sliding direction of the upper frame 50, and the front door 22 The rollers 44 and 44 provided at the lower end (the lower ends of the lower frame member 27 and the side frame members 28 and 29) are slidably mounted on the lower rail 56b of the lower frame 56 (see FIGS. 2 and 3). . As is clear from FIG. 1, the upper end portion of the front door 22 is composed of the upper frame member 26 constituting the frame body 24 and the upper end portions of the side frame members 28 and 29, and the lower end portion constitutes the frame body 24. The lower frame member 27 and the lower frame members 28 and 29 are composed of lower end portions. Further, the rear door 32 corresponding to the frame 24, the upper frame member 26, the lower frame member 27, the right frame member 28, and the left frame member 29 in the front door 22 includes a frame body 34, an upper frame member 36, and a lower frame member 29, respectively. A frame member 37, a right frame member 38, and a left frame member 39.

  Further, as shown in FIG. 2, protrusions 40, 40 protruding upward at a predetermined height are formed on the front edge and the rear edge of the upper surface portion 26 a of the upper frame member 26 (the upper surface portion of the front door 22). It is formed over the entire length in the width direction along the corresponding edge (in the rear door 32, the upper surface portion 36a of the upper frame member 36 (the upper surface portion of the rear door 32)). Each protrusion 40 operates the showcase 10 to cool the inside of the storage chamber 21, thereby causing dew condensation water generated in the upper frame 50 and accumulated in the upper surface portion 26 a to flow forward and rearward of the front door 22. It is configured not to flow out to the side. The height of the protrusion 40 is set to a value that allows the front door 22 to be mounted between the upper frame 50 and the lower frame 56 and that does not contact the inner upper surface of the upper frame 50 in the mounted state. . The protrusion 40 is formed integrally with the upper surface portion 26a, and is made of the same synthetic resin as that of the frame body 24 (upper frame member 26).

(Operation of Example)
Next, the operation of the door structure of the showcase according to the embodiment will be described. When the cooling operation of the showcase 10 is started, the storage chamber 21 is cooled by the refrigeration device 62, the cold air circulation device 64, and the like. Due to the temperature difference between the outside air temperature and the inside temperature, the outside humidity, and the like, when the outdoor side (front side) of the front door 22 and the rear door 32 falls below the dew point temperature, condensation starts and occurs in the upper frame 50. Condensed water flows down and accumulates on the upper surface portions 26a and 36a of the upper frame members 26 and 36 (upper surface portions of the doors 22 and 32).

  As described above, when the front door 22 or the rear door 32 is opened and closed in the state where the dew condensation water is accumulated in the upper surface portions 26a and 36a, the dew condensation water moves on the upper surface portions 26a and 36a. 26a and 36a are provided with protrusions 40 and 40, respectively, so that condensed water flows out to the outdoor side (front side) where the user is located and the storage room 21 side (rear side) where articles are stored. Is prevented. The condensed water collected on the upper surface portions 26a, 36a by the opening / closing operation of the front door 22 or the rear door 32 is the right side frame member 28, which is the both side surface portions of the doors 22, 32 where the protrusions 40 are not provided. 38 flows out through the outer side surface portion of 38 or the outer side surface portions of the left side frame members 29, 39 to reach the lower frame 56, and is discharged to the drain pan through the drain port 56e provided in the lower frame 56, the drain pipe 58 and the like. To be processed. Each of the protrusions 40 is formed integrally with the upper surface portions 26a and 36a, so there is no seam and it is not necessary to perform a process such as sealing.

  In addition, such mounting between the upper frame 50 and the lower frame 56 of the door 22 (32) is performed while inserting the upper end portion of the door 22 (32) into the guide groove 50a in the upper frame 50. This is done by lifting the door 22 (32) and placing the rollers 44, 44 so as to straddle the lower rail 56b of the lower frame 56. The door 22 (32) is detached in the reverse of the mounting operation flow. The door 22 (32) is attached and detached periodically from the standpoint of hygiene maintenance such as cleaning of the upper frame 50 and the lower frame 56, but the height dimension of the protrusion 40 according to the present invention. Is set to be smaller than the dimension that does not hinder the attachment / detachment of the door 22 (32), and thus the attachment / detachment work of the door 22 (32) can be suitably performed.

(Another example)
In the above-described embodiment, the ridges 40 are projected on the front edge and the rear edge of the upper surface portions 26a, 36a of the upper frame members 26, 36 (the upper surface portions of the doors 22, 32). It is not limited to this. For example, as shown in FIG. 4, protrusions 40, 40 are provided on the front and rear edges of the upper surface of the door 22 (32), and the side edge on the side in contact with the inner surface of the heat insulating box 18. You may make it project the side part protrusion 42 in this. In the case of the front door 22, the upper portion of the right frame member 28 is connected to a portion that contacts the right edge of the upper surface portion 26 a so as to be connected to the protrusions 40, 40 provided on the upper surface portion 26 a of the upper frame member 26. Side protrusions 42 are provided so as to protrude at a predetermined height. Further, in the case of the rear door 32, a portion of the upper surface portion of the left frame member 39 that contacts the left edge of the upper surface portion 36 a is connected to the ridges 40, 40 provided on the upper surface portion 36 a of the upper frame member 36. Side protrusions 42 are provided so as to protrude upward at a predetermined height.

  That is, by assembling the frame body 34 from the respective frame members 26, 27, 28, 29 (36, 37, 38, 39), the condensed water accumulated on the upper surface portion 26a (36a) is outside the outdoor area where the user is present. (Front side) and the side of the right frame member 28 of the door 22 (the heat insulation box of the front door 22) when the doors 22 and 32 are opened as well as the side of the storage chamber 21 (rear side) in which articles are stored. To prevent the condensed water from flowing out to the left side frame member 39 side of the rear door 32 (side contacting the inner side surface of the heat insulating box 18 of the rear door 32). Can do. The side protrusion 42 is formed integrally with the right frame member 28 (left frame member 39). FIG. 4 shows only the front door 22.

(Example of change)
(1) In each of the above-described embodiments, the front and rear ridges 40 and the side ridges 42 are part of the synthetic resin frames 24 and 34 (upper surface portions 26a and 36a of the upper frame members 26 and 36). Although formed with the same material as the frame bodies 24 and 34, the present invention is not limited to this. For example, the material of each protrusion 40, 40 may be made of a flexible and deformable soft PVC resin. In this case, since the ridges 40, 40 are deformed so as to be crushed against the pressing force from above, the height of the ridges 40, 40 is set as high as possible within a range not contacting the inner upper surface of the upper frame 50. It is also possible to do. This improves the sealing between the upper frame 50 and the doors 22 and 32 that are inserted into the guide grooves 50a of the upper frame 50 and are slidable. It can be suitably prevented from leaking out. In addition, when the height dimension of each protrusion 40 is more than the inner upper surface of the upper frame 50, it contacts the condensed water generated in the upper frame 50 when the doors 22 and 32 are opened and closed. Since it will be scattered, it is not preferable.
(2) In each of the above-described embodiments and modification (1), the condensed water accumulated on the upper surface portions 26a and 36a (the upper surface portions of the doors 22 and 32) of the upper frame members 26 and 36 However, the present invention is not limited to this, although it has reached the lower frame 56 through the side edge of the water and discharged to the outside (drain pan) via the drain port 56e, the drain pipe 58, and the like. For example, the condensed water accumulated in the upper surface portions 26a and 36a is communicated with the right side frame member 28 of the frame body 24 constituting the front door 22 and the left side frame member 39 of the frame body 34 constituting the rear door 32 in the vertical direction. A drainage channel 46 may be provided that guides to the lower frame 56. In this case, the condensed water accumulated on the upper surface portions 26a, 36a of the upper frame members 26, 36 reaches the lower frame 56 through the drainage channel 46, and further outdoors (drain pan) via the drainage port 56e, the drain pipe 58 and the like. ). Further, in the case where such a dedicated drainage channel 46 is provided, a protrusion is provided on all four edges of the upper surface portions 26a, 36a (upper surface portions of the doors 22, 32) of the upper frame members 26, 36. May be. FIG. 5 shows an example in which a drainage channel 46 is formed on a door in a door structure according to another embodiment.
(3) In each of the embodiments described above, the ridges 40, 40 are integrally formed on the upper surface portions 26a, 36a (upper surface portions of the doors 22, 32) of the upper frame members 26, 36. The present invention is not limited to this, and may be formed separately from the upper surface portions 26a and 36a. In this case, the protrusions 40 and 40 are formed in close contact with the upper surface portions 26a and 36a so that the condensed water does not leak from between the protrusions 40 and 40 and the upper surface portions 26a and 36a. Processing such as providing a separate seal is performed as necessary.

It is a front view which shows the showcase which employ | adopted the door structure based on the Example of this invention partially fractured | ruptured. It is a vertical side view which expands and shows the upper part of the door in the door structure which concerns on an Example. It is a vertical side view which expands and shows the lower part of the door in the door structure which concerns on an Example. It is a perspective view which expands and shows the upper part of the door in the door structure which concerns on another Example. It is a schematic perspective view which expands and shows the upper part of a door provided with the drainage channel which concerns on the example of a change (2).

Explanation of symbols

18 heat insulation box, 18a front opening, 22 front door (door), 26a upper surface 32 rear door (door), 36a upper surface, 40 ridge, 42 side ridge 50 upper frame, 56 lower frame

Claims (2)

A heat insulating box (18) having a front opening (18a), and an upper frame (50) and a lower frame (56) are provided on the inner peripheral upper part and the inner peripheral lower part of the front opening (18a). In a showcase that opens and closes the front opening (18a) by a door (22, 32) slidably supported between (50, 56),
Protruding ridges (40, 40) projecting upward at a predetermined height along each edge are provided on the front edge and the rear edge of the upper surface (26a, 36a) of the door (22, 32). The door structure of the showcase that is characteristic.   On the upper surface portion (26a, 36a), when the door (22, 32) closes the front opening (18a), the side end portion on the side that comes into contact with the inner surface of the heat insulating box (18) 2. A door structure for a showcase according to claim 1, wherein side protrusions (42) protruding upward at a predetermined height are connected to both protrusions (40, 40).

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