JPS5912533Y2 - refrigerator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of a two-temperature type refrigerator, etc., and in particular, prevents dew buildup on the partition plate that partitions the front opening on the high-pressure side pipe of the refrigerant piping.

Conventionally, in this type of refrigerator, the high-pressure side refrigerant piping of the refrigerant cycle is housed in a U-shaped groove formed on the outer box opening edge in order to prevent dew condensation on the outer box front opening edge. However, the piping at the edge of the opening of the outer box is continuously and integrally bent, and a side pipe is installed on the back side of the partition plate that partitions the main body opening to prevent dew condensation on the front side of the partition plate.

In such construction, the refrigerant pipe is inserted into the groove formed in advance on the edge of the outer box mouth, and then the inner box is inserted and fitted into the outer box. I bent it upright so that it wouldn't get in the way, and after inserting the inner box, I bent it back up.

At this time, if the bending point of the side pipe is not constant or the bending fulcrum is separated from the pipe at the outer box opening edge, the pipe inside the outer box groove will move toward the outside of the groove when the side pipe is bent. There was a great possibility that the sealing material between the opening edges of both the inner and outer boxes would be crushed by the tension, reducing the sealing effect, or that the refrigerant pipes would break or deform, obstructing the flow of the refrigerant.

This proposal was developed in view of these points, and the figure will be explained below.

Reference numeral 1 denotes a refrigerator main body composed of an outer box 2, an inner box 3, and a heat insulating material 4 filled with foam between the two boxes 2 and 3. The main body opens at the front with a partition wall 5, and has two chambers 6 and 7 inside. It is divided into sections.

The outer box 2 is formed by bending the inner peripheral edge of the front flange 2A backwards around the entire periphery of the front opening edge or on multiple sides so as to have a substantially U-shaped cross section, so that there is a space between the overlapping flange 2B, the side flange 2C, and the overlapping flange 2B. Rear flanges 2D facing each other with
A groove 8 is formed that opens toward the inner circumference.

The inner box 3 has a flange-shaped edge 3 extending toward the outer periphery at the periphery of the front opening.
A, the flange-shaped edge 3A is fitted into the groove 8 of the outer box 2, and the front surface of the flange-shaped edge 3A is brought into contact with the back surface of the opposing overlapping flange 2B.

Reference numeral 9 denotes a heat dissipation tube formed as a part of the high-pressure side refrigerant piping that monitors the refrigerant cycle, and is used to circulate relatively high-temperature refrigerant among circulating refrigerants. It is stored and arranged to prevent dew condensation on the opening edge of the outer box 2, such as the front flange 2A, by heating and evaporating it.

This heat dissipation tube 9 is continuously folded back and bent at a suitable place close to and facing the partition wall 5, and is arranged to cover the front surface of the partition wall 5, and is placed on the back surface of a partition front plate 10 that divides the opening of the main body 1 into two sections. A side pipe 11 extending in a substantially parallel direction and bent in a substantially U-turn is bulged from one side to the other side.

The inner box 3 has a side pipe 11 that is bent and protruded from a part of the heat dissipation pipe 9 toward the back side of the partition front plate 10, and an opening edge adjacent to the side pipe 11 is recessed backward at a suitable position, so that the outer box 2 overlaps. A stepped portion 12 forming a recess for drawing out the side pipe 11 is formed between the flange 2B and the flange 2B.

Reference numeral 13 denotes a mounting plate whose one end is fixed to the rear flange 2D of the outer box 2 by spot welding or screws, and whose other end is extended along the back surface of the forward inner box 3 or has an intermediate hinge 14. Screw holes 16, 16 for supporting and screwing the support plate 15 for support on the inner box 3 from the inner surface side are bored at the other end thereof,
On one end side, two or more locking protrusions 17, 17 are cut and raised at two or more locations spaced apart from each other so as to protrude into the groove 8.

The locking protrusion 17. Reference numeral 17 is located near the bending portions 9A, 9A where the heat dissipation pipe 9 bends toward the side pipe 11, and the heat dissipation pipe 9 is in contact with and engaged with the heat dissipation pipe 9.
It is formed closer to the opening side of the groove 8.

18 is a sealing material installed in the groove 8 to prevent leakage of the heat insulating material 4.

Since the present invention is structured as described above, even if the side pipe is bent as shown by the dotted line in Fig. 5, the heat dissipation pipe located in the groove will be pulled outward and come out of the groove. This is prevented by the heat dissipation tube coming into contact with the locking protrusion and being locked therein, making it possible to properly arrange the heat dissipation tube in the groove and preventing uneven heating and deformation and damage of the heat dissipation tube.

Furthermore, the force for pulling the heat dissipation tube outward from the groove is applied to the mounting plate and not to the brim-shaped edge of the inner box, so that it does not cause cracking or deformation of the inner box.

In addition, the bending position of the side pipe is approximately constant and is separated from the heat dissipation pipe from the new bend to the side pipe, so the heat dissipation pipe is not twisted and deformed and damaged, and it is easy to return to the original position and make a new bend. becomes.

Furthermore, the locking protrusion prevents the side pipe from moving up and down,
The positioning work becomes easy because the heat dissipation tubes will not be pulled and shifted from the back side of the front plate of the partition wall during work such as connecting work.

[Brief explanation of drawings]

Fig. 1 is a front view of the proposed refrigerator excluding the door, Fig. 2 is a sectional view taken along line AA' in Fig. 1, Fig. 3 is a perspective cross-sectional view of the same essential part, and Fig. 4
5 is a cross-sectional view of the main part, FIG. 6 is a perspective view of the mounting plate, and FIG. 7 is a side view of the double-sided box when assembled. 9... Heat dissipation pipe, 11... Side channel pipe, 17... Locking protrusion.

Claims (1)

[Scope of utility model registration request] An outer box in which a front flange and a rear flange form a groove opening toward the inner periphery on the front opening edge, and a flanged edge formed on the front opening edge is fitted and engaged in the groove. An inner box, a heat insulating material filled between the two boxes, a heat dissipation pipe that is a part of the high pressure side refrigerant piping arranged in the groove of the outer box, and a partition front plate that partitions the front opening of the main body. A side pipe in which a part of the heat dissipation pipe is continuously bent into a substantially U-turn shape from the groove and pulled out along the back side, and a part near the bent part where the heat dissipation pipe is bent into the side pipe. A refrigerator comprising a mounting plate fixed to the rear surface of the rear flange, and a locking protrusion formed on the mounting plate, protruding into the groove, and abutting the opening side of the groove of the heat dissipation pipe. .