JP4675838B2 - Showcase insulation panel structure - Google Patents

Description

  In the present invention, an outer surface material and an inner surface material are assembled to an end surface member, and a front surface or an upper surface is opened in a main body constituted by a heat insulating panel formed by filling a foaming heat insulating material in a filling space surrounded by the end surface member. The present invention relates to a heat insulating panel structure of a showcase that forms a storage room and cools the storage room.

  In food stores such as supermarkets and convenience stores, frozen and refrigerated open showcases having an open front or upper surface are frequently used to display frozen foods and refrigerated foods. In a conventional heat insulation panel structure of a showcase, a thermal insulation panel is formed by filling a foam space with a predetermined filling means in a filling space surrounded by an outer surface material, an inner surface material and an end surface member (for example, Patent Document 1 to Patent Document 3).

JP 59-104062 A (second page, FIG. 4) JP 2000-283645 A (2nd page, FIG. 2) Japanese Patent No. 3369946 (2nd page, FIG. 2)

  However, in Patent Documents 1 to 3, it is often the case that the foam heat insulating material is filled in a slightly larger amount so as to be sufficiently distributed in the filling space. Excess foam insulation material generated during filling leaks out of the filling space from the outer surface material and the assembly of the inner surface material and the end surface member, or from the injection location of the foam insulation material, and so on. Not only does it take time to remove the foam insulation, but also the excess foam insulation was wasted.

  The present invention has been made paying attention to such problems, and an excess of the foam insulation filled so as to sufficiently spread the inside of the filling space leaks out of the filling space from the assembly location or the like. It is an object of the present invention to provide a heat insulating panel structure for a showcase that can prevent this.

In order to solve the above-mentioned problems, the heat insulating panel structure for a showcase according to claim 1 of the present invention is an assembly of an outer surface material and an inner surface material on an end surface member, and a foamed heat insulating material in a filling space surrounded by these members. A heat insulation panel structure for a showcase that forms a storage chamber having an open front surface or an upper surface in a main body constituted by a heat insulation panel formed by filling the storage chamber and cools the storage chamber. An internal space is formed, and a guide path that allows a part of the foam heat insulating material filled in the filling space to be guided to the internal space is formed at a predetermined position of the end surface member. The guide path is formed in a substantially U-shape in cross-section opened to the outer surface material side, the guide path is formed by a notch portion formed in the open end side of the inner wall of the end surface member, and the heat insulating panel is the showcase Composed at the bottom of Together and, the end faces of the thermal insulation panel is characterized in that open to the outer surface member side which is disposed on the lower side.
According to this feature, since the surplus portion of the foam heat insulating material filled so as to sufficiently spread in the filling space can be actively guided from the guide path to the internal space of the end face member, the surplus amount of the foam heat insulating material Can be prevented as much as possible from leaking out of the filling space. Further, the bonding strength between the end face member and the cured heat insulating foam is increased. Furthermore, since the foamed heat insulating material that is sequentially guided from the lower side to the upper side in the internal space by passing through the guiding path is fixed integrally with the outer surface material installed on the lower side, heat insulation from the outside of the outer surface material is performed. Performance can be improved.

The heat insulating panel structure of the showcase according to claim 2 of the present invention is the heat insulating panel structure of the showcase according to claim 1, wherein the internal space is provided between the inner wall and the outer wall of the end face member. The guide wall is partitioned inward and outward by the partition wall, and the guide path is formed in the inner wall.
According to this feature, since the partition wall is provided in the internal space, the end surface member not only becomes structurally strong, but the foamed heat insulating material that is guided to the internal space through the guide path is formed on the end surface member. Since the inner wall is sandwiched between the end face member and the inner wall, the strength of the heat insulating panel is increased. Moreover, since not only the outer wall but also the partition wall is provided, leakage of the foam heat insulating material can be reliably prevented.

The heat insulating panel structure of the showcase according to claim 3 of the present invention is the heat insulating panel structure of the showcase according to claim 1 or 2 , wherein the foam heat insulating material is provided on at least an inner wall and an outer wall of the end face member. An injection path for filling the filling space is formed, and the injection path is partitioned from the internal space in which the guide path is formed.
According to this feature, the foam insulation is filled into the filling space from the injection path, and surplus foam insulation that has been guided to the internal space through the guide path leaks to the outside through the injection path. Can be prevented.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a longitudinal sectional view showing an overall image of a heat insulating panel structure of a showcase in an embodiment of the present invention. FIG. 2 is a perspective view showing a filling space filled with a foam heat insulating material at the bottom of the showcase. FIG. 3 is a perspective view of the end face member as viewed from below. FIG. 4 is an enlarged sectional perspective view showing the periphery of the injection path. FIG. 5 is a cross-sectional view showing a filling state of the foam heat insulating material. FIG. 6A is a cross-sectional view taken along the line AA in FIG. 2 showing the formation state of the heat insulating panel, and FIG. FIG. 7 is a perspective view of the end face member in the modification as viewed from below.

  The refrigerated showcase 1 shown in FIG. 1 is mainly installed in stores that handle foods such as stores, supermarkets, and convenience stores, and is installed to display products in a cold or frozen state while keeping the products at a low temperature. A plurality of display shelves 6 for displaying products are installed in a refrigerating room 5 surrounded by an inner box 3 having an opening on the front side, and products are also displayed on a bottom plate 3b provided at the bottom. (Not shown) can be displayed, and a large number of products can be placed. Hereinafter, in the description of the present embodiment, the front side of the front side is the right side, the depth side is the left side, and the opening side (left side) of the inner box 3 is the front side when the refrigerated showcase 1 of FIG. It is assumed that the closed side (right side) is the rear side.

  The refrigerated showcase 1 includes a substantially U-shaped outer box 2 having a front face (left side in the figure) opened and a substantially U-shaped inner box 3 having a front face open. The case main body 4 is provided, and the internal space is a refrigerator compartment 5. A rear end of a plurality of upper and lower display shelves 6 is attached to the back plate 3 a of the inner box 3, and products (not shown) are displayed on the upper surfaces of the respective display shelves 6 and the bottom plate 3 b of the inner box 3. It is like that.

  A ventilation path 7 is formed between the outer box 2 and the inner box 3, and a cooling device 8 and a blower 9 are installed on the vertical part and the bottom part of the ventilation path 7, respectively. At the front end of the upper part of the case body 4, a cold air outlet 10 communicating with the ventilation path 7 is formed downward, and at the upper end of the lower part of the front end of the case body 4 between the outer box 2 and the inner box 3, A cold air inlet 11 is formed at the bottom.

  When the blower 9 is operated, the cold air cooled by the cooling device 8 flows upward in the ventilation path 7 as indicated by an arrow, and is blown out from the cold air outlet 10 toward the lower inlet 11. . As a result, a cold air curtain 12 is formed on the open surface of the front surface of the case body 4, and a part of the cold air flows into the refrigerator compartment 5, whereby the displayed product is kept cold.

  Further, a handrail member 13 provided in the left-right direction is attached to the upper end of the opening in the lower front end portion of the outer box 2 by fixing (welding) the lower end surface to the upper front portion of the outer box 2 so as to be integrally upward. Projected to Reference numeral 15 denotes a handrail cover fixed to the upper end of the handrail member 13 and the front upper end of the decorative panel 16 provided along the outer surface of the outer box 2.

  Next, the bottom structure of the refrigerated showcase 1 will be described. As shown in FIG. 2, the heat insulating panel P of the refrigerated showcase 1 is an end face member in which an outer surface material 20 and an inner surface material 23 are installed at both end portions. 26, and the filling space surrounded by these is filled with a foam heat insulating material as described later.

  Specifically, for the heat insulating panel P, as the outer surface material 20, an outer bottom plate 21 provided substantially parallel to the floor surface Y, and the outer bottom plate 21 continuous with the outer bottom plate 21 obliquely toward the upper front side of the refrigerated showcase 1. As the inner surface material 23 that constitutes the lower surface of the ventilation path 7, the provided oblique outer bottom plate 22 extends in the left-right width direction and is located at a predetermined height away from the outer bottom plate 21 and the oblique outer bottom plate 22. The inner bottom plate 24 and the oblique inner bottom plate 25 are similarly extended in the left-right width direction.

  In addition, the member configuration of the outer surface material or the inner surface material is not necessarily configured by separate members, and each may be a single member. For example, the outer surface material and the inner surface material are integrated. In addition, a single member having a predetermined left-right width dimension may be used.

  Also, bent pieces 21a, 22a, 24a that bend toward the ends in the left-right direction of the outer bottom plate 21 and the oblique outer bottom plate 22 and the ends in the left-right direction of the inner bottom plate 24 and the oblique inner bottom plate 25 to face each other. 25a are extended. Further, the end face member 26 is installed so as to block the end portions in the left-right direction of the outer bottom plate 21 and the oblique outer bottom plate 22 and the inner bottom plate 24 and the oblique inner bottom plate 25 in the front-rear direction.

  As shown in FIG. 3 and FIG. 4, the end face member 26 is formed in the front-rear direction in a hollow structure having a substantially U shape in cross section by the outer wall 30a, the inner wall 30c, and the upper wall 30f. While being brought into contact with the outer surface material 20 arranged on the lower side, the upper wall 30f as the closing side is arranged to be brought into contact with the inner surface material 23.

  The bent pieces 21a of the outer bottom plate 21 and the bent pieces 22a of the oblique outer bottom plate 22 are in contact with the inner surface of the outer wall 30a of the end face member 26 and are provided in a number of left and right partition walls provided at predetermined intervals in the front-rear direction. 30d is assembled so as to be fitted in the groove 31 formed on the open side 26a. Further, the bent piece 24 a of the inner bottom plate 24 and the bent piece 25 a of the oblique inner bottom plate 25 are assembled so as to be fitted into a concave groove 27 formed in the upper wall 30 f of the end surface member 26.

  A box-shaped filling space K surrounded by the outer surface member 20, the inner surface member 23, and the end surface member 26 assembled in this way is formed, and the filling space K is filled with a foam heat insulating material H as described later. Thus, the heat insulation panel P is formed (see FIGS. 5 and 6).

  In addition, the assembly configuration of the outer surface material and the inner surface material and the end surface member is not necessarily limited to the bent pieces extending in the front-rear direction of the outer surface material and the inner surface material fitted into the recessed grooves formed in the end surface member. For example, the concave portions and the convex portions may be provided at predetermined intervals in locations facing each member, and the concave portion and the convex portion may be assembled by concave and convex fitting. .

  Further, as shown in FIG. 1, also in the front part of the refrigerated showcase 1, a heat insulating panel P1 is formed by filling a space surrounded by a predetermined outer surface material, an inner surface material and an end surface member with a foam heat insulating material. ing. Similarly, heat insulating panels P2 and P3 are also formed at the rear and upper parts of the refrigerated showcase 1, and these heat insulating panels enable heat insulation from the outside of the refrigerated showcase 1.

  As shown in FIG. 3, the structure of the end face member 26 will be described in detail. The inner space of the end face member 26 is left and right (inner and outer directions) by a partition wall 30b provided in the front and rear direction between the inner wall 30c and the outer wall 30a. ), And has an internal space N inside the partition wall 30b and an internal space N ′ outside the partition wall 30b, and a plurality of partition walls 30d formed in the left-right direction at predetermined intervals. The space N and the internal space N ′ have a hollow structure that is further divided into a large number in the front-rear direction.

  The inner space structure of the end face member is not necessarily limited to the above-described embodiment, and may be divided into a large number in the left-right direction, for example, or may be divided in only one direction of the left-right direction or the front-rear direction. May be.

  The end surface member 26 has a divided structure that can be divided into a plurality of parts in the front-rear direction by fitting a concave portion (not shown) provided so as to be detachable and a convex portion 32. By appropriately connecting or dividing the end face member 26 according to the direction specifications and depth dimensions, it can be applied to refrigerated showcases of various specifications and types.

  Further, as described above, the end face member 26, which is a hollow structure having a substantially U-shaped cross-sectional view, has a predetermined width dimension in the left-right direction. Therefore, it can be configured as a stable member that sits in the width direction at the left and right end portions. Even when the leg members 19 having a substantially U-shape are connected, these members can be easily assembled and the structural strength can be increased.

  The inner wall 30c of the end face member 26 is formed with a large number of notches 28 as guide paths with notches at the end of the open side 26a at predetermined intervals in the front-rear direction. The interior space N divided into a large number by the partition wall 30d is communicated with the interior of the partition wall 30b, and the surplus portion of the foam heat insulating material H filled in the filling space K is transferred to the interior space N as described later. It guide | induces (refer FIG.6 (b)).

  As shown in FIGS. 3 and 4, an injection path 29 for filling the foamed heat insulating material H into the filling space K as described later is formed at a predetermined position of the end face member 26. The injection path 29 is filled with the outside of the refrigerated showcase 1 by openings 29a, 29b, 29c formed substantially coaxially with the outer wall 30a provided in the front-rear direction of the end face member 26, the partition wall 30b, and the inner wall 30c. In addition to communicating with the space K, the internal space N and the internal space N ′ are configured to be partitioned in the front-rear direction by partition walls 30e and 30e ′ provided in the left-right direction. Each of the openings 29a, 29b, and 29c is formed to have a slightly larger diameter than a nozzle 35 for filling a foam heat insulating material described later. In addition, a check plate 34 that has elasticity and covers the opening 29c is provided on the inner surface of the inner wall 30c.

  Next, formation of a heat insulation panel is demonstrated.

  As shown in FIG. 5, the nozzle 35 for filling the foam heat insulating material is inserted into the injection path 29, and the check plate 34 is pressed by the tip of the nozzle 35 and inserted into the filling space K. The foaming heat insulating material H is filled into the filling space K from the nozzle 35 by a foaming heat insulating material filling means (not shown). The filled foam heat insulating material H has fluidity and scatters from the injection path 29 side to the back side in the filling space K with a predetermined momentum, and the outer surface material 20 (outer bottom plate 21, oblique outer bottom plate). 22) and the inner surface material 23 (the inner bottom plate 24, the oblique inner bottom plate 25) while adhering to the injection path 29 side from the back side in the filling space K and from below in the filling space K by gravity. It is sequentially filled upward.

  As shown in FIGS. 6A and 6B, the foam heat insulating material H filled in the filling space K in this way is the outer surface material 20 (the outer bottom plate 21, the oblique outer bottom plate 22) over time. And the inner surface material 23 (the inner bottom plate 24, the diagonal inner bottom plate 25) and the end surface member 26 are solidified integrally to form the heat insulating panel P.

  As shown in FIG. 6 (b), the surplus portion H ′ of the foamed heat insulating material filled so as to sufficiently spread in the filling space K is removed from the cutout portion 28 formed in the inner wall 30 c of the end face member 26. The end face member 26 can be actively guided to the inner space N on the inner side in the left-right direction. By doing in this way, it can prevent as much as possible that excess H 'of a foaming heat insulating material leaks outside the filling space K from the assembly | attachment location of the outer surface material 20, the inner surface material 23, and the end surface member 26, etc. Further, the bonding strength between the end face member 26 and the cured heat insulating foams H and H 'is increased. Furthermore, since the surplus portion H ′ of the foam heat insulating material can be guided from the large number of notches 28 into the internal space N divided into a large number by the partition wall 30d, the contact area between the foam heat insulating material and the end face member 26 is increased. And the intensity | strength of the heat insulation panel P is raised.

  Further, since the partition wall 30b and the like are provided in the internal space, the end face member 26 not only becomes structurally strong, but also fills in the filling space K and passes through the notch 28 to reach the internal space N. Since the surplus H ′ of the foamed heat insulating material thus guided is fixed integrally with the end surface member 26 so as to sandwich the inner wall 30c of the end surface member 26, the strength of the heat insulating panel P is increased. Further, since not only the outer wall 30a but also the partition wall 30b is provided, leakage of the surplus H ′ of the foam heat insulating material can be reliably prevented.

  In particular, the partition walls 30b and 30d are originally provided as reinforcing ribs for the end face member 26, and by using such reinforcing ribs, leakage of excess H ′ of the foamed heat insulating material described above can be reliably prevented. The effect that can be obtained.

  Further, the cutout portion 28 is formed by cutting out the open side 26a of the end face member 26 which is a hollow structure having a substantially U-shaped cross-sectional view. By doing so, the filling space K is filled. Since the surplus area H ′ of the foam heat insulating material that has been guided to the internal space N through the notch 28 and the outer surface material 20 are increased, the strength of the heat insulating panel P is increased.

  Furthermore, the open side 26a of the end surface member 26 in which the notch portion 28 is formed is brought into contact with the outer surface material 20 (the outer bottom plate 21, the oblique outer bottom plate 22) disposed on the lower side, and in this way. The surplus portion H ′ of the foamed heat insulating material, which is sequentially guided from the lower side to the upper side in the internal space N by passing through the cutout portion 28, is the outer surface material 20 (the outer bottom plate 21, diagonally installed on the lower side) Since it is fixed integrally with the outer bottom plate 22), the heat insulation performance with the outside of the outer surface material 20 (the outer bottom plate 21, the oblique outer bottom plate 22) can be improved.

  Further, as shown in FIG. 3, the injection path 29 is partitioned from the internal space N in which the notch portion 28 is formed by partition walls 30 e and 30 e ′ provided in the left-right direction before and after the injection path 29. By doing so, as shown in FIG. 6A, surplus foam insulation material that is filled into the filling space K from the injection path 29 and that is guided to the internal space N through the notch 28. The minute H ′ can be prevented from leaking outside the filling space K through the injection path 29. In addition, by providing the check plate 34 that covers the opening 29c, similarly, the surplus portion H ′ of the foam heat insulating material leaks out of the filling space K through the injection path 29. Can be prevented.

  The partition wall 30b is not formed with a guiding path as provided in the inner wall 30c, and partitions the internal space N and the internal space N ′, so that surplus H ′ of the foam heat insulating material As described above, can be guided to the internal space N inside the partition wall 30b, but is not guided to the internal space N ′ outside the partition wall 30b. By doing in this way, the interior space N ′ forms the heat insulation panel P in a state filled with air. About heat insulation performance, since it is substantially the same with air and a foam heat insulating material, the heat insulation panel P can be comprised, maintaining the heat insulation performance in the end surface member 26. FIG.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the notch 28 is formed as the guide path by notching the open side 26a end side of the inner wall 30c of the end face member 26. However, the foam heat insulating material can be guided to the internal space. For example, the formation location of the guide path is not necessarily limited to the cutout portion 28 with the open side 26a edge cut out. For example, as shown in FIG. 7 as a modification of the present invention, the guide path of the end surface member 36 is provided. May be a hole 38 penetrating in a hole shape at a substantially central height of the inner wall 30c. By doing in this way, the foamed heat insulating material that fills the filling space K and is further filled can be guided from the hole 38 to the internal space N of the end face member 36 in the same manner as described above. Can be prevented from leaking to the outside of the filling space K from the assembly location or the like.

  In the above embodiment, the end face member 26 is arranged so that the open side 26a abuts the outer surface material 20. However, for example, the end face member abuts the open side on the inner surface material and the closed side on the outer surface material. A hollow structure having a substantially U-shaped cross-sectional view arranged so as to be in contact with the guide wall, and a guide path that is notched to the open side is formed on the inner partition wall of the end face member. The space and the internal space may be communicated. By doing so, the foamed heat insulating material guided to the internal space is fixed integrally with the inner surface material, so that the strength of the heat insulating panel is increased.

It is a longitudinal cross-sectional view which shows the whole image of the heat insulation panel structure of the showcase in the Example of this invention. It is a perspective view which shows the space filled with the foam heat insulating material in the bottom part of a showcase. It is the perspective view which looked at the end surface member from the lower part. It is the expanded sectional perspective view which showed the injection path periphery. It is sectional drawing which shows the filling condition of a foam heat insulating material. (A) is AA sectional drawing of FIG. 2 which shows the formation condition of a heat insulation panel, (b) is BB sectional drawing like (a). It is the perspective view which looked at the end surface member in a modification from the lower part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerated showcase 2 Outer box 3 Inner box 4 Case main body 5 Refrigerating room 19 Leg member 20 Outer surface material 21 Outer bottom plate 22 Diagonal outer bottom plate 23 Inner surface material 24 Inner bottom plate 25 Diagonal inner bottom plate 26 End surface member 26a Open side 28 Notch (guidance) Road)
29 Injection path 30a Outer wall 30b Partition wall 30c Inner wall 30d Partition walls 30e, 30e 'Partition wall 30f Upper wall 35 Nozzle 36 End face member 38 Hole (guide path)

Claims (3)

A storage chamber having a front surface or an upper surface opened in a main body constituted by a heat insulating panel formed by assembling an outer surface material and an inner surface material to an end surface member and filling a foaming heat insulating material in a filling space surrounded by the end surface member. A heat insulating panel structure of a showcase for forming and cooling the storage chamber,
An internal space is formed inside the end face member, and a guide path that allows a part of the foam heat insulating material filled in the filling space to be guided to the internal space is formed at a predetermined position of the end face member , The end surface member is formed in a substantially U-shaped cross-sectional view that is open to the outer surface material side, and the guide path is formed by a notch portion formed on an open end side of the inner wall of the end surface member, A heat insulating panel structure for a showcase, wherein the panel is configured at the bottom of the showcase, and an end surface member of the heat insulating panel is open to the outer surface material side disposed on the lower side .   The internal space is partitioned inward and outward by a partition wall provided between an inner wall and an outer wall of the end face member, and the guide path is formed in the inner wall. Showcase insulation panel structure. At least an inner wall and an outer wall of the end surface member are formed with an injection path for filling the filling space with the foam heat insulating material, and the injection path is partitioned from the internal space in which the guide path is formed. The heat insulating panel structure of a showcase according to claim 1 or 2 , wherein

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