JP2589242B2 - Cooling storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration storage having a refrigerant reservoir for a refrigeration cycle disposed in a heat insulating material of a heat insulating box.

[0002]

2. Description of the Related Art Conventionally, a cooling storage of this type is constructed by filling a heat insulating material such as foamed polyurethane between an inner box and an outer box to form a heat insulating box. Since the accumulator as a coolant reservoir for storing the fluid has a low temperature, it is embedded in the heat insulating material. The accumulator 10 of the inner box 102 of the conventional cooling storage according to FIG.
FIG. 8 is a perspective view of one part, and FIG. 8 is a plan sectional view of the cooling storage of the accumulator 101 part.

A heat insulating material 104 made of foamed polyurethane is filled between the inner box 102 and the outer box 103 made of a steel plate, and a straight portion in the horizontal direction is located on a surface of the inner box 102 on the side of the heat insulating material 104. Refrigeration cycle cooling pipe 1
05 is fixed in a meandering shape. Since the accumulator 101 is at a low temperature as described above, there is a risk that dew condensation will occur on the surface of the outer box 103 if the accumulator 101 is close to the outer box 103.
The accumulator 101 is inserted into and engaged with a through hole 107 formed in a heat insulating material block 106 which is generally formed of styrene foam or the like so as to be separated from the heat insulating material block 03. Was buried in

[0004]

According to this structure, the heat insulating block 106 holding the accumulator 101 has a lower heat insulating performance than the heat insulating material 104, so that the heat insulating performance of the heat insulating material 104 in the accumulator 101 part is deteriorated, and 1
03 has a problem of dew formation. Further, if the thickness of the heat insulating material block 106 is reduced to prevent this, the heat insulating material block 106 is deformed by the foaming pressure at the time of filling the heat insulating material 104, and the regular shape cannot be maintained.
As a result, the accumulator 101 moves from the normal position, and approaches the outer box 103 side, which results in promoting dew condensation on the outer box 103.

[0005] The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to provide a cooling storage in which dew condensation on an outer box caused by a coolant reservoir is reliably prevented.

Another object of the present invention is to facilitate the work of mounting the coolant reservoir.

[0007]

According to a first aspect of the present invention, there is provided a cooling storage box comprising an inner box, an outer box, and a heat insulating material filled between the inner and outer boxes. And the inner box 2
The cooling pipe 15 of the refrigeration cycle 4 is arranged in a meandering shape on the side of the heat insulating material 8. The refrigerant reservoir (accumulator 3) included in the refrigeration cycle 4 and the inner box 2
A cooling liquid storage fixture 5 attached to the inner box 2 in parallel with the cooling pipes 15 between the cooling pipes 15 of A.

[0008] The cooling storage 1 according to the second aspect of the present invention comprises an inner box 2
And an outer box 7 and a heat insulating material 8 foam-filled between the inner and outer boxes 2, 7 to form a heat insulating box 9, which is included in the refrigeration cycle 4 by the fixture 5 on the heat insulating material 8 side of the inner box 2. A coolant reservoir (accumulator 3) is provided, and the fixture 5 is provided with fixing portions 31, 31 fixed to the heat insulating material 8 side of the inner box 2.
And an engaging portion (insertion holes 34, 34), and a flexible band member 38 inserted and engaged with the engaging portion and tied around the coolant reservoir (accumulator 3). is there.

[0009]

According to the first aspect of the present invention, since the fixture is attached to the inner box, the refrigerant reservoir (the accumulator) does not move even by the foaming pressure of the heat insulating material. Further, since the fixture 5 is attached to the inner box 2 in parallel with the cooling pipes 15 between the cooling pipes 15 of the inner box 2, the cooling pipes 15 are not damaged. Further, the coolant reservoir (accumulator 3) is provided at the inner box 2 corner 2A.
Is fixed at a position where the thickness of the heat insulating material 8 is the largest.

According to the cooling storage 1 of the second aspect, the inner box 2
The band member 38 is engaged with the engaging portion (insertion hole 34) of the fixture 5 fixed to the mounting member 5, and the band member 38 is further tied around the coolant reservoir (accumulator 3) to thereby store the coolant reservoir (accumulator 3). ) Is fixed to the fixture 5. Since the band member 38 is flexible, it can be easily deformed even when the area around the coolant reservoir (accumulator 3) is crowded with piping.

[0011]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a perspective view of an accumulator 3 portion of an inner box 2 of the cooling storage 1, FIG. 2 is a perspective view of the cooling storage 1, FIG. 3 is a longitudinal sectional view of the cooling storage 1, FIG. FIG. 5 is a perspective view of the fixture 5, and FIG.
It is a plane sectional view of the cooling storage 1 of a part.

In FIG. 2 and FIG. 3, a cooling storage 1 of the embodiment is a frozen showcase for storing and selling ice cream, and is made of foamed polyurethane between a metal inner box 2 and an outer box 7 which are opened upward. The heat insulating material 8 is filled to form a heat insulating box 9. The upper opening of the heat-insulating box 9 is partially closed by an upper structure 10 composed of a frame and a glass plate, and the remaining opening is closed and opened by a glass door 11 that is rotatably mounted upward. ing. A storage room 12 is formed in the inner box 2, and a plurality of ice cream cans 13 are stored in the storage room 12. A cooling pipe 15 included in the refrigeration cycle 4 described below is fixed to the heat insulating material 8 side of the inner box 2 in a meandering manner with a straight portion as a horizontal direction.

A machine room 16 is formed below the heat insulating box 7, and a compressor 17, a condenser 18 and the like included in the refrigeration cycle 4 are housed and installed in the machine room 16, and a rear opening of the machine room 16 is formed. It is closed by the unit cover 19.
A disher pot 20 for accommodating a disher for taking out ice cream is attached to the rear surface of the outer box 7 of the cooling storage 1.

Next, in the refrigerant circuit diagram of FIG. 4, the refrigeration cycle 4 includes the compressor 17, the condenser 18, the dryer 2
4. Capillary tubes 22, 23, cooling pipe 1
5, pipe 25, accumulator 3 as a coolant reservoir, check valve 26, header 27 and suction pipe 2
9 are sequentially connected in a ring shape, and the high-temperature and high-pressure gas refrigerant discharged from the compressor 17 is condensed and liquefied in the condenser 18, decompressed in the capillary tubes 22 and 23, and then cooled. It flows into the pipe 15 and evaporates to cool the inner box 2 and cool the inside of the storage room 12 to the freezing temperature. The refrigerant flowing out of the cooling pipe 15 enters the accumulator 3, where the unevaporated liquid refrigerant and the gas refrigerant are separated, and only the gas refrigerant is sucked into the compressor 17 from the suction pipe 29 via the check valve 26 and the header 27. Perform circulation.

The accumulator 3 has a cooling pipe 15
The accumulator 3 is attached to the fixtures 5 and 5 and buried in the heat insulating material 8 because the temperature of the accumulator 3 becomes extremely low because the low-temperature refrigerant that has exited the container flows in. As shown in FIG. 5, the fixture 5 is made of a strip-shaped steel plate, and has fixed portions 31, 3 at both ends thereof.
1 is formed. The fixture 5 is bent so that the fixing portions 31 and 31 are at right angles to each other.
The portion between the projections 31 extends outward beyond the fixing portions 31 and 31, and is bent so as to chamfer a corner, which is defined as a projection 33. In the projecting portion 33, two insertion holes 34, 34 as engaging portions are formed at positions perpendicular to each other.

The mounting fixture 5 having the above-mentioned structure is arranged such that the upper and lower cooling pipes 1 are formed outside the corner 2A of the inner box 2 before the heat insulating material 8 is foamed.
The fixing portions 31, 31 are fixed to the outer surface of the side wall of the inner box 2 sandwiching the corner portion 2A by rivets 36, 36. In this way, by making the attachment 5 parallel to the cooling pipe 15, the attachment 5 can be fixed without causing damage to the cooling pipe 15.

Two such fittings 5 are mounted vertically at predetermined intervals, and the accumulator 3 is arranged outside the two fittings 5 with the pipe 25 side up before foaming of the heat insulating material 8. . After that, the flexible synthetic resin band members 38, 38 are passed through the insertion holes 34, 34 of the fixtures 5, 5, and engaged therewith, and then wrapped around the accumulator 3 to be tied up. It is fixed to the upper and lower fixtures 5,5. In the embodiment, the band member 38 is formed by a binding tool called a binding that inserts and binds the other end to the delivery section at one end, and according to the binding, the accumulator 3 can be easily attached to the fixture 5. Tied up. Note that the band member 38 may be a normal string or the like. In the embodiment, a check valve 26 and a header 27 are provided around the accumulator 3 as shown in FIG.
Are arranged and are crowded, but the band member 38 is deformed in any way, so that the accumulator 3 can be easily bound to the fixtures 5 and 5 by avoiding such piping members.
Even if the position of the accumulator 3 is slightly shifted left and right, the accumulator can be easily fixed to the fixtures 5 and 5 by the band member 38 in the same manner.

After fixing the accumulator 3 in this way, a foamed polyurethane stock solution is injected between the inner box 2 and the outer box 7, and the heat insulating material 8 is foam-filled. At this time, the accumulator 3 is the corner 2A of the inner box 2 where the distance from the outer box 7 is the longest.
Since it is located outside, the thickness of the heat insulating material 8 between the accumulator 3 and the outer box 7 can be sufficiently ensured. Therefore, the outer box 7
Dew condensation on the outer surface can be prevented. Further, since the accumulator 3 is fixed to the inner box 2 by the attachments 5 and 5, it is possible to reliably prevent the heat insulating material 8 from moving due to the foaming pressure.

In the embodiment, the present invention is applied to a frozen showcase for ice cream. However, the present invention is not limited to this, and the present invention is also effective when applied to a normal refrigerator / freezer or a low-temperature showcase.

[0020]

As described above in detail, according to the first aspect of the present invention, since the coolant reservoir is attached to the fixture fixed to the inner box, the coolant reservoir does not move even due to the foaming pressure of the heat insulating material. In addition, since the coolant reservoir is fixed at the position where the thickness of the heat insulating material is the largest at the corner of the inner box, dew condensation on the outer surface of the outer box can be reliably prevented. Further, since the fixture for the coolant reservoir is attached to the inner box in parallel with the cooling pipe of the inner box, the cooling pipe is not damaged.

According to the second aspect of the present invention, a flexible band member is engaged with the engaging portion of the fixture fixed to the inner box, and this band member is further placed around the coolant reservoir. Since the refrigerant reservoir is fixed to the fixture by being tied, even if the refrigerant reservoir is displaced or the periphery of the refrigerant reservoir is crowded with piping, the refrigerant reservoir can be easily fixed to the fixture, and cooling can be performed. The assembling workability of the storage can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an accumulator portion of an inner box of a cooling storage.

FIG. 2 is a perspective view of a cooling storage.

FIG. 3 is a longitudinal sectional view of a cooling storage.

FIG. 4 is a refrigerant circuit diagram of a refrigeration cycle.

FIG. 5 is a perspective view of a fixture.

FIG. 6 is a plan sectional view of a cooling storage of an accumulator portion.

FIG. 7 is a perspective view of an accumulator portion of an inner box of a conventional cooling storage.

FIG. 8 is a plan sectional view of an accumulator portion of a conventional cooling storage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling storage 2 Inner box 3 Accumulator 4 Refrigeration cycle 5 Fixture 7 Outer box 8 Heat insulating material 9 Heat insulating box 15 Cooling pipe 31 Fixed part 34 Insertion hole 38 Band member

Claims (2)

(57) [Claims] An insulation box is formed from an inner box and a heat-insulating material foam-filled between the outer box and the inner and outer boxes. In the cooling storage provided, mounting the refrigerant reservoir included in the refrigeration cycle and the refrigerant reservoir attached to the inner box in parallel with the cooling pipe between the cooling pipes at the corners of the inner box. Refrigeration storage comprising: 2. A refrigerant included in the refrigerating cycle by an inner box and a heat insulating material foam-filled between the outer box and the inner and outer boxes, the mounting being provided on the heat insulating material side of the inner box. In a cooling storage provided with a liquid reservoir, the mounting fixture is fixed to the heat insulating material side of the inner box, an engaging portion, and is inserted and engaged in the engaging portion, and the coolant is And a flexible band member tied around the liquid reservoir.