JP3086590B2 - Insulated box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating box having a main body formed by joining a plurality of heat-insulating walls, and more particularly to a seal structure at a corner inside the main body.

[0002]

2. Description of the Related Art Conventionally, in a cooling storage such as a refrigerator,
For example, Japanese Patent Application Laid-Open No. 5-87441 (F25D23 /
As shown in 06), a foamed heat insulating material is filled between the outer plate and the inner plate to form a rectangular heat insulating panel (heat insulating wall), and the heat insulating panel is joined through, for example, a joining frame material. Thus, the main body of the rectangular heat-insulating box is formed.

In this case, a sealing material such as a caulking material is provided on the joining frame material to prevent cold air from leaking from a gap between the heat insulating panels. Conventionally, after completion of the main body, a waterproof treatment has been performed by applying, for example, a one-part naturally hardening type silicone-based waterproof sealant to the corners of the bottom of the refrigerator after the main body is completed due to the occurrence of dew condensation and the like.

[0004]

However, since such a waterproof sealant requires several hours from application to curing, the hand or tool of an operator comes into contact during curing and the shape is lost, and the sealing effect is reduced. There was a problem that was spoiled. In addition, there is also a problem that if dust in the air adheres to the waterproof sealant during the curing, it becomes extremely difficult to remove the dust.

[0005] Further, since the application of the waterproof sealant is performed manually, it cannot be applied uniformly, so that the aesthetic appearance of the finished state is impaired. After curing, it is extremely difficult to clean the area around the waterproof sealant, and there is also a drawback that hygienic problems occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problems, and solves various problems until the waterproof sealant applied to the inner corners of the main body is cured. It is an object of the present invention to provide a heat insulation box that also solves the aesthetic and hygienic problems of the present invention.

[0007]

The heat-insulating box of the present invention comprises a main body formed by joining a plurality of heat-insulating walls, and a natural hardening type waterproof sealant applied to a corner inside the main body. And a molding provided by covering the waterproof sealing agent. The molding has a curved surface with a depressed surface, and a fixing portion that bites into the waterproof sealing agent on the back surface, and the waterproof sealing agent enters. And a leakage preventing portion formed at the end and in contact with the inner surface of the heat insulating wall.

[0008]

According to the heat-insulating box of the present invention, since the natural hardening type waterproof sealant is covered with the molding, the hands and tools of the operator are required after the application of the waterproof sealant and before the hardening. There is no danger that the shape will be destroyed by contact, and the inconvenience that dust adheres and becomes dirty can be eliminated. Further, since the molding is exposed at the corners inside the main body instead of the waterproof sealant, the appearance is also improved.

In particular, since the molding surface has a concave curved surface, dust and other germs that accumulate at the corners can be removed smoothly. Therefore, the inside of the main body can always be maintained in a sanitary manner. In addition, since the fixing portion that bites into the waterproof sealant is provided on the back surface of the mall, it is possible to prevent the inconvenience of the mall coming off after the waterproof sealant is cured.

[0010] Further, since the molding is provided with an escape portion into which the waterproof sealant enters, and an end portion having a leak prevention portion which comes into contact with the inner surface of the heat insulating wall, the waterproof sealant is attached when the mall is attached. The inconvenience of leaking out of the mall is also eliminated.
Therefore, it is possible to prevent a reduction in the sealing effect and a deterioration in the appearance.

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a refrigerator 1 composed of a heat insulating box 2 of the present invention.
FIG. 2 is a longitudinal sectional side view of the refrigerator 1, and FIG.
4 is an enlarged view of a portion A, FIG. 4 is an enlarged view of a portion B of FIG.
6 and 7 show perspective views of the heat insulating box 2 respectively.

In each of the drawings, a refrigerator 1 of the embodiment is a so-called under counter type commercial refrigerator installed in a restaurant kitchen or the like, and its heat insulating box 2 has a top wall, a bottom wall, left and right side walls and a back wall. A rectangular main body 9 is constituted by a plurality of heat insulating panels 4, 5, 6, 7 and 8 as heat insulating walls respectively constituting the above.

The heat insulating panel 5 constituting the bottom wall of the main body 9
As shown in FIG. 3 and FIG. 4, an outer plate 11 and an inner plate 12, both made of a steel plate or a synthetic resin plate,
A frame member 13 made of hard styrofoam sandwiched between the peripheral portions of the inner and outer plates 2, 11 and the inner and outer plates 12, 11
And a heat insulating material 14 such as foamed polyurethane filled in a space surrounded by the frame material 13. A recess 16 is formed on the upper and lower surfaces of the frame member 13 over the entire circumference in the longitudinal direction, and the upper recess 16 is exposed on the upper surface. The heat insulating panel 4 constituting the top wall of the main body 9
Are symmetrical in the vertical direction and have the same configuration.

The heat insulating panel 8 constituting the back wall of the main body 9
As shown in FIG. 4, an outer plate 17 and an inner plate 18 each made of a steel plate or a synthetic resin plate, and a frame member 19 made of hard styrofoam sandwiched between the peripheral portions of the inner and outer plates 18 and 17 over the entire circumference. And a heat insulating material 14, such as a similar foamed polyurethane, which is foam-filled in a space surrounded by the inner and outer plates 18, 17 and the frame member 19. A recess 21 is formed in the upper and lower surfaces of the frame member 19 in the longitudinal direction, and the recess 21 is located on the end face side of the heat insulating panel 8.
21 is exposed on the upper surface or the lower surface. The heat insulating panels 6 and 7 forming the left and right side walls of the main body 9 have different dimensions, but basically have the same configuration.

In the above construction, through holes 23 are formed at predetermined intervals in the peripheral portion of the outer panel 11 of the heat insulating panels 4 and 5, as shown in FIGS. 5 and 6, for example. And thermal insulation panel 4
Between the lower recess 16 and the upper recess 21 of the heat insulating panels 6, 7 and 8, and between the upper recess 16 of the heat insulating panel 5 and the lower recess 21 of the heat insulating panels 6, 7 and 8. The heat insulating panels 4, 5, 6, 7, and 8 are assembled in a rectangular shape with a resin (for example, hard polystyrene) connecting frame member 26 interposed therebetween. Then, the bolt 28 is inserted into the through hole 23 together with the washer 27 as shown in FIG.
Then, the heat insulating panels 4, 5, 6, 7 and 8 are joined by penetrating the connecting frame member 26 and screwing the frame member 19 to complete the main body 9 as shown in FIG.

A caulking material or the like (not shown) is provided between the heat insulating panels 4, 5, 6, 7 and 8 to prevent cold air from leaking.

A storage chamber 31 which opens forward is formed in the main body 9. A frame-shaped front plate 32 is attached to the front opening edge of the main body 9.
A drain pan 33 made of, for example, stainless steel and extending on the inner plate 12 of the heat insulating panel 5 toward the rear storage room 31 is attached to the lower side 32A. Hereinafter, the drain pan 33 constitutes a part of the heat insulating panel 5. A drain hole 34 penetrating the heat insulating panel 5 is formed in the drain pan 33, and a drain hose 36 extending below the main body 9 is connected to the drain hole 34.

A top table 38 made of stainless steel is mounted on the upper surface of the heat insulating panel 4 of the heat insulating box 2, and furthermore, double door open heat insulating doors 37, 37 are mounted on the front plate 32. Is openably closed.

On the other hand, a machine room 41 is formed on the left side of the heat insulating box 2, and a compressor and a condenser (not shown) constituting a refrigeration cycle are accommodated in the machine room 41. . In addition, a control panel 42 and a grill 43 for sucking outside air are provided on the front of the machine room 41.

On the other hand, a cooler 44 and a blower 46 for circulating cool air which constitute the refrigeration cycle are provided on the left side of the storage room 31, and a plurality of shelves are provided in the storage room 31. 47, 47 are erected. The cool air that has exchanged heat with the cooler 44 is forcibly circulated into the storage room 31 by the blowers 46, 46, and the inside of the storage room 31 is cooled to a predetermined temperature. On the lower side of the cooler 44, a dew tray 48 for receiving defrost water from the cooler 44 is arranged. The dew tray 48 is connected to the drain hose 36 by a water pipe 49 penetrating the heat insulating panel 5. ing.

Here, the bottom corner of the inner surface of the main body 9 of the heat insulating box 2, that is, the heat insulating panel 5 (and the drain pan 33)
As shown in FIGS. 5 to 8, a natural hardening type waterproof sealant 51 is applied to the corners formed by the upper surface and the inner surfaces of the heat insulating panels 6, 7, 8 and the inner surface of the front portion of the drain pan 33 as shown in FIGS. (Note that other corners may be applied). The waterproof sealing agent 51 is, for example, a silicon-based one-pack type RTV rubber (deoxime type), and is cured within a few hours after being applied, so that each of the heat insulating panels 5, 6, 7, and 8 is cured.
To prevent water leakage from the joint.

This waterproof sealant 51 is applied and
As shown in FIG. 8, the bulges toward the storage room 31 side, but is covered with the molding 52 immediately (before curing) immediately after the application. The molding 52 is formed by extrusion molding of a hard vinyl chloride resin, and is connected and formed in a rectangular shape so as to conform to the shape of the corner where the waterproof sealant 51 is applied.

FIG. 9 shows a sectional shape of the molding 52.
The molding 52 has a curved surface 53 whose surface is depressed with a predetermined radius of curvature, and has a pair of barred fixing portions 54 formed on the back surface thereof. Further, at both ends of the molding 52, leakage preventing portions 56, 56 bent to the back side are formed, and between the fixing portions 54, 54, and between the fixing portions 54, 54 and the leakage preventing portions 56, 56. Are formed with recesses 57, 58, 58 depressed inward.

The dimension D between the distal ends of the fixing portions 54, 54 is smaller than the dimension C between the bases as shown in FIG. 9, and the outer surface thereof is a flat surface to prevent leakage as described later. The portions 56, 56 are located slightly inside and close to the orthogonal line formed by the drain pan 33 and the inner plate 18 to be brought into contact.

The molding 52 having such a structure is shown in FIGS.
Then, as shown by the arrow, the storage chamber 31 is pressed against the unsealed waterproof sealing agent 51 from the storage chamber 31 side to cover it as shown in FIGS. At this time, the fixing portions 54, 54 of the molding 52 have their tips located inside the base, so that the fixing portions 54, 54
54 penetrates into the waterproof sealant 51. Therefore, the molding 52 is prevented from being detached after the waterproof sealant 51 is cured.

When the molding 52 is pressed, the waterproof sealant 51 first enters the central escape portion 57 and also enters the outer escape portions 58, 58, but the outer surfaces of the fixing portions 54, 54 are drain pans. 33 or inner plate 18
The unnecessary passages 58, 5
Approach to 8 is blocked. Further, the leakage prevention portions 56, 56
Is in contact with the drain pan 33 or the inner plate 18, so that the waterproof sealant 51 is prevented from leaking out of the molding 52. Therefore, the appearance is not impaired by the leaked waterproof sealant 51, and the sealing effect of the waterproof sealant 51 does not decrease.

Since the waterproof sealing agent 51 is covered with the molding 52 in this manner, after the waterproof sealing agent 51 is applied,
There is no danger that the shape will collapse even if the hands or tools of the operator come into contact before the curing, and the inconvenience that dust adheres and becomes dirty is eliminated. Furthermore, since the molding 52 is exposed at the bottom corner of the main body 9 instead of the waterproof sealant 51, the appearance is also improved.

In particular, the surface of the molding 52 has a concave curved surface 5.
Since it is set to 3, dust and germs that accumulate at the bottom corner of the storage room 31 can be removed smoothly. Therefore,
It is possible to always maintain the inside of the storage room 31 in a sanitary manner.

In the embodiment, the present invention is applied to a so-called under counter type commercial refrigerator having a top table. However, the present invention is not limited to this. The present invention is effective for boxes.

[0030]

As described above in detail, according to the present invention, the natural hardening type waterproof sealant is covered with the molding.
After application of the waterproof sealant, there is no danger of the shape being deformed even if the hands or tools of the operator come into contact before curing, and the inconvenience that dust adheres and becomes dirty can be eliminated. Further, since the molding is exposed at the corners inside the main body instead of the waterproof sealant, the appearance is also improved.

In particular, since the molding surface has a concave curved surface, dust and other germs that accumulate at the corners can be removed smoothly. Therefore, the inside of the main body can always be maintained in a sanitary manner. In addition, since the fixing portion that bites into the waterproof sealant is provided on the back surface of the mall, it is possible to prevent the inconvenience of the mall coming off after the waterproof sealant is cured.

Further, the molding is provided with an escape portion into which the waterproof sealant enters, and a leak prevention portion at the end thereof which comes into contact with the inner surface of the heat insulating wall. The inconvenience of leaking out of the mall is also eliminated.
Therefore, it is possible to prevent the deterioration of the sealing effect and the appearance.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator constituted by a heat insulating box of the present invention.

FIG. 2 is a vertical sectional side view of the refrigerator of FIG. 1;

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is an enlarged view of a portion B in FIG. 2;

FIG. 5 is a perspective view of the heat insulating box of the present invention.

FIG. 6 is a perspective view of the heat insulating box of the present invention.

FIG. 7 is an enlarged view corresponding to FIG. 3 in a state where a waterproof sealant is applied.

FIG. 8 is an enlarged view corresponding to FIG. 4 in a state where a waterproof sealant is applied.

FIG. 9 is a vertical sectional side view of a molding.

FIG. 10 is a perspective view of the heat-insulating box of the present invention for explaining attachment of a molding.

FIG. 11 is an enlarged view corresponding to FIG. 3 for explaining the attachment of the molding.

FIG. 12 is an enlarged view corresponding to FIG. 4 for explaining attachment of a molding.

[Explanation of symbols]

 2 Heat insulation box 4-8 Heat insulation panel (heat insulation wall) 9 Main body 51 Waterproof sealant 52 Mall 53 Curved surface 54 Fixed part 56 Leak prevention part 57, 58 Escape part

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Fumio Mizuno 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-47-36042 (JP, A) 58-177783 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25D 23/06 F25D 23/06 303

Claims (1)

(57) [Claims] 1. A main body formed by joining a plurality of heat insulating walls, a natural hardening type waterproof sealant applied to a corner inside the main body, and a cover provided with the waterproof sealant. The molding has a curved surface with a depressed surface, a fixed portion that bites into the waterproof sealant on the back surface, a relief portion into which the waterproof sealant enters, and an end formed at the end. A heat-insulating box, comprising: a leak-preventing portion that contacts an inner surface of the heat-insulating wall.