JPH0236072Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a refrigerator with a machine room formed below the main body.
It relates to cooling boxes such as low-temperature cases.

(b) Prior art Japanese Utility Model Application No. 53-135856 (JPC, 70A221.2) discloses an outer box in which the bottom wall is placed on a flange formed by bending the lower end of the back wall, an inner box, and the inner box. A heat insulating box body is disclosed in which the main body is constituted by a heat insulating wall made of a foamed heat insulating material filled between both boxes, and a machine room in which a compressor and a condenser are installed is formed below the main body.

In such a configuration, the foam insulation leaks from between the flange and the bottom wall, so when assembling the outer box, a sealing material such as putty is provided at the joint between the flange and the bottom wall to prevent foam leakage during foaming. I am trying to do this, but
Due to the bending of the bottom wall, a gap occurs between a part of the bottom wall and the flange, so it is necessary to increase the amount of blocking material in this gap, or to provide a blocking material after assembling the outer box.
A drawback occurred that required a lot of effort.

(c) Purpose of the invention The purpose of this invention is to solve the drawbacks of the prior art and to simplify the installation of the back cover of the machine room.

(d) Structure of the invention The main body is composed of an inner box, an outer box, and a heat insulating wall made of a foam insulation material filled between the inner and outer boxes,
A compressor and condenser are installed below this main body,
Further, in the cooling box body in which a removable cover is arranged on the back side, the lower end of the back wall of the outer box is bent to form an upward side and an upward groove, and the above-mentioned outer case serves as a ceiling wall of the machine room. a rising side located in front of the upward side at the rear end of the bottom wall of the outer box; and a rearward side extending rearward from the upper edge of the rising side and located above the upward side;
A downward side extends downward from the rear edge of the rearward side and is located behind the upward side and is fitted into the upward groove, and the upright side, the rearward side and the downward side form an image. and a downward groove into which the upward side fits, and an insertion side formed at the upper end of the cover is fitted into the downward groove in the same way as the upward side.

(e) Embodiment of the invention The embodiment of the invention will be described below based on the drawings. 1 is a cooling box body such as a low-temperature case used for selling ice cream in stores, and has a transparent window 2 on the front upper part and a top surface. The main body is composed of a heat insulating wall 4 having a front-back sliding transparent door 3 in the front half. The heat insulating wall has a cooler 5 made of meandering cooling pipes on its outer surface, and includes an inner box 7 made of metal defining an interior 6, an outer box 8 in which this inner box is installed, and both the inner and outer boxes. It is composed of a foamed heat insulating material 9 such as hard polyurethane filled in between. Reference numeral 10 denotes a machine room formed below the heat insulating wall, in which a refrigerant compressor 11 and a wire fin condenser 12, which together with the cooler constitute a refrigeration cycle, are housed. This machine room includes a front wall 13 of the outer box 8, left and right side walls 15,
16, a bottom wall 17 that slopes upward at the rear, and a metal base 18 on which the compressor and condenser are placed;
It is comprised of a metal cover 19 on the back that is detachable. Reference numeral 20 denotes an air intake passage formed by opening a part of the base 18 located directly below the condenser, and introduces outside air necessary for cooling the compressor 11 and the condenser 12 into the machine room 10. The cover has a vertical portion 21
and a forward side 2 extending forward from the upper edge of this vertical part.
2, an insertion side 23 extending directly above the front edge of the front side, and an engagement side 24 extending forward from the lower edge of the vertical part, and the vertical part 21 and the front side 22 have a bottom. Machine room 10 guided along the slope of wall 17
Exhaust passages 25 and 26 are formed to discharge warm air to the outside. This cover is placed on the back side of the machine room 10 by inserting the insertion side 23 into a downward groove to be described later and fixing the lower end of the vertical part 21 to the base 18 with a fastener 27 such as a screw. Both left and right edges,
Ventilation passages 28 and 29 for discharging the warm air are formed between the lower portions of both sides of the back wall 14 of the outer box. 30,3
Reference numeral 1 denotes a spacer fixed to the lower portions of both sides of the back wall 14 of the outer box, and its rear end extends rearward from the vertical portion 21 of the cover.

32 is an upward side formed by bending the lower end of the back wall 14 of the outer box into a U shape, and 33 is an upward groove defined by forming this upward side.
34 is a rising side formed by bending the rear end of the bottom wall 17 of the outer box directly upward, 35 is a rearward side extending rearward from the upper edge of this rising side, and 36 is a rearward side of this rearward side. A downward side 37 extending downward from the rear edge is a downward groove defined by the upright side, the rearward side, and the downward side. The lower part of the rising side extends downward from the lower end of the back wall 14, and becomes an exposed surface when the cover 19 is removed. Upward side 3 of the back wall
2 is fitted into the downward groove 37, and the downward side 36 of the bottom wall is fitted into the upward groove 33, respectively, when the outer box 8 is assembled.
The back wall and the bottom wall are interconnected by the adhesive force of the foam insulation material 9. Moreover, the insertion side 23 of the cover
is inserted into the downward groove 37 while being guided by the rising side 34 so as to be located between the upward side 32 and the rising side 34 .

According to such a configuration, the upward side 32 of the back wall 14 is fitted into the downward groove 37 of the bottom wall 17, the downward side 36 of the bottom wall 17 is fitted into the upward groove 33 of the back wall 14, Since both sides overlap in a front-to-back relationship, the assembly work of the outer box 8 is greatly facilitated, and the mechanical strength of the bottom wall 17 is improved by the upright side 34, rearward side 35, and downward groove 37, and the back By eliminating the gap between the joint between the wall 14 and the bottom wall 17, leakage of the foamed heat insulating material 9 during foaming can be prevented. Also, the insertion side 23 of the cover 19
is inserted into the downward groove 37 in the same way as the upward side 32, so the upper end of the cover 19 can be easily fixed using the joint structure between the back wall 14 and the bottom wall 17 of the outer box 8. No screws or other holding parts are required.

Furthermore, since the lower part of the upright side 34 extends below the lower end of the back wall 14, the insertion side 23 can be inserted into the downward groove 37 by applying the insertion side 23 to this extended portion. Not only is it simple, but even when the rising edge 34 is curved and deformed due to the foaming pressure of the foamed insulation material 9, as shown in FIG. It can be inserted into the downward groove 37.

(f) Effects of the device Since the main proposal is structured as described above, it produces the effects listed below.

The upper side of the back wall is fitted into the downward groove of the bottom wall, and the lower side of the bottom wall is fitted into the upward groove of the back wall, so that both overlap in front and back, making assembly of the outer box much easier. Not only this, but foam leakage from the joint between the back wall and the bottom wall can be prevented.

Since the insertion side of the cover is inserted into the downward groove in the same way as the upper side, the joint structure between the back wall and bottom wall of the outer box can be used as is for the top end fixing structure of the cover, making the work of inserting the cover easier. Not only is this simple, but the number of parts to be attached to the cover can be reduced.

[Brief explanation of the drawing]

The drawings all show an embodiment of the cooling box according to the present invention, and FIG. 1 is a sectional view taken along line B-B' in FIG. 2, FIG. 2 is an overall front perspective view, and FIG. 3 is an enlarged view of FIG. FIG. 4 is a rear perspective view of the main part, and FIG. 5 is a vertical sectional view of the main part when deformation occurs on the upright side. 4...Insulating wall, 7...Inner box, 8...Outer box, 9...
... Foam insulation material, 10 ... Machine room, 11 ... Compressor, 12 ... Condenser, 14 ... Back wall, 17 ... Bottom wall, 19 ... Cover, 23 ... Plug-in side, 32 ...
Upward side, 33...Upward groove, 34...Rising side, 35
...backward side, 36...downward side, 37...downward groove.

Claims (1)

[Claims for Utility Model Registration] 1. The main body is composed of an inner box, an outer box, and a heat insulating wall consisting of a foamed heat insulating material filled between the inner and outer boxes, and a compressor and a compressor are installed below the main body. In a cooling box body in which a condenser is installed and a removable cover is arranged on the back side, the lower end of the back wall of the outer box is bent to form an upward side and an upward groove,
At the rear end of the bottom wall of the outer box, which serves as the top wall of the machine room, there is a raised side located in front of the upwardly facing side, and a raised side extending rearward from the upper edge of this raised side and located above the upwardly facing side. a rearward side, a downward side that extends downward from the rear edge of the rearward side and is located behind the upward side and fits into the upward groove; the upright side, the rearward side, and the lower side; A downward groove defined by the facing side and into which the upward side fits is formed, and an insertion side formed at the upper end of the cover is fitted into the downward groove in the same manner as the upward side. A cooling box body. 2. The cooling box body according to claim 1, wherein the lower part of the rising side extends below the lower end of the back wall.