JPH05296649A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent the side plates of the outer case from deformation at the time of the foaming of expandable polyurethane injected into the space for filler between the outer and inner cases by making the side walls tapering at the recessed parts in the inner case in which a partitioning piece which divides the inside of the refrigerator into an upper and lower parts. CONSTITUTION:The subject relates to a refrigerator of whose cabinet 10 the inner case 14 has boardlike partitioning pieces 22, 30, one above the other, which divide the inside of the inner case 16 into a cold-storage chamber 16, a freezing chamber 18, and a vegetable chamber 20. The partitioning pieces 22, 30 are held in place by being fitted respectively in recessed parts 40, 44 formed in the two side walls of the inner case. The lower recessed part 66 is formed with a taper in the side wall in a manner that the space 15 for the filler becomes thicker with height, whereas the upper recessed part 40, in a manner that the space 15 for the filler becomes less thick with height. As a result, at the time of the foaming of expandable polyurethane injected into the space 15 for the filler the pressure differential in foaming pressure in the space 15 for the filler between the cold-storage chamber 16 and the freezing chamber 18 can be reduced and hence the side plates of the outer case can be prevented from deformation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a cabinet 111 of a refrigerator comprises an outer box 112 made of an iron plate and an inner box 114 made of a synthetic resin plate. The outer box 112 and the inner box 114 are combined with each other with a space 115 for filling the urethane foam W therebetween. Cabinet 11
The inside of 1 is divided into upper and lower parts by separate plate-shaped partition bodies 122 and 130 to form a refrigerating room 116, a freezing room 118 and a vegetable room 120.

The partition body 122 is horizontally fixed inside the cabinet 111 as follows. That is, the engaging recesses 140 are extended in the front-rear direction on both side walls of the inner box 114, and the pair of engaging recesses 140 are fitted and fixed to both sides of the plate-shaped partition body 122.

In addition, the heat insulation effect of the freezer compartment 118 is improved by the refrigerator compartment 1.
In order to make it larger than the heat insulation effect of 16, the freezer compartment 118
The thickness of the filling space portion 115 (hereinafter referred to as the freezing compartment heat insulating thickness) is larger than the thickness of the filling space portion 115 in the refrigerating compartment 116 (hereinafter referred to as the refrigerating compartment heat insulating thickness), whereby the filling in the freezing compartment 118 is performed. The filling amount of the urethane foam W in the space 115 is increased.

[0005]

However, if the heat insulating effect of the freezer compartment 118 is to be increased as described above, as shown in FIG.
An extreme step occurs in the thickness B of the filling space 115 at the position of 0 (hereinafter referred to as the heat insulating thickness of the recess) B and the heat insulating thickness C of the freezer compartment.

For example, if the refrigerating compartment insulation thickness A is 30 mm, the recess insulation thickness B is 25 mm, and the freezing compartment insulation thickness C is 45 mm, the difference between the recess insulation thickness B and the freezing compartment insulation thickness C is 20 mm.
And become extremely large. As a result, when the urethane foam W is filled, the amount of the urethane foam W filled in the filling space 115 in the freezing compartment 118, the filling space 115 in the refrigerating compartment 116, and the filling space 115 in the engaging recess 140 is reduced. Differently, when this foams about 40 times, there is a difference in the foaming pressure. That is, the freezer compartment 1 with a large filling amount
The filling space 115 in 18 and the filling space 115 in the refrigerating chamber 116 have a large foaming pressure, and the filling space 115 in the engagement recess 140 with a small filling amount has a small foaming pressure.

In the conventional refrigerator, since the heat dissipating pipe condenser is arranged inside the filling space 115, this serves as a reinforcing member for the side plate of the outer box 112,
It had strong rigidity. Therefore, when the urethane foam W was filled, the side plate of the outer box 112 did not bend due to the difference in foaming pressure.

However, in recent refrigerators, the pipe capacitors for heat dissipation are removed from the side plates of the outer box 112 and placed on the bottom surface thereof in order to facilitate the disposal of the refrigerator due to environmental problems and the like. Therefore, the rigidity of the side plate of the outer box 112 is weakened.

As a result, as shown by the chain double-dashed line in FIG. 5, the side plates in the freezing compartment 118 and the freezing compartment 116, where the foaming pressure of the urethane foam W is large, bulge outward and are deformed into a waveform. Has occurred.

In this case, if the reinforcing plate is attached to the side plate of the outer box 112, the above problems can be solved, but there are new problems that the installation work becomes complicated and the cost increases.

In view of the above problems, the present invention provides a refrigerator in which the side plates of the outer box do not deform when urethane foam W is foam-injected into the filling space.

[0012]

A refrigerator according to the present invention comprises a cabinet composed of an outer box and an inner box formed by combining the outer box and a space filled with a heat insulating material so as to be separate from each other. A refrigerator that divides the inside of the inner box into upper and lower parts by a partition body to configure a refrigerating room and a freezing room, wherein the thickness of the filling space portion in the freezing room is set to be thicker than the thickness of the filling space portion in the refrigerating room, On both side walls of the inner box, engaging recesses that extend in the front-rear direction and engage with both side parts of the partition body are formed, and by forming side walls of the inner box in the engaging recesses in a taper shape, The thickness of the filling space of the engaging recess is gradually increased from the refrigerating compartment side to the freezing compartment side.

[0013]

[Operation] In the refrigerator having the above-described structure, the side wall of the inner box in the engaging recess is formed in a tapered shape so that the thickness of the filling space of the engaging recess is changed from the refrigerating chamber side to the freezing chamber side. It was formed so as to gradually thicken toward the side. Therefore, since there is no extreme difference between the thickness of the filling space of the engaging recess and the heat insulating thickness of the refrigerating chamber and the heat insulating thickness of the freezing chamber, the filling space of the freezing chamber is filled when urethane is injected and foamed inside the filling space. The pressure difference of the foaming pressure in the filling space of the refrigerating chamber and the filling space of the engaging recess does not change abruptly, and the side plates of the outer case are not deformed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 10 denotes a refrigerator cabinet showing an embodiment of the present invention, which is an outer box 12 made of an iron plate.
And an outer box 12 separated by a space 15 filled with urethane foam W.
And an inner box 14 combined with. Cabinet 1
0 has a refrigerating room 16 from the top, and a freezer 1 from the middle.
8 is the vegetable compartment 20 at the bottom. The room temperature of the vegetable compartment 20 is set to be substantially the same as the room temperature of the refrigerator compartment 16. Therefore, the vegetable compartment 20 is substantially a refrigerating compartment. In addition, the refrigerating room according to claim 1 of the claims of the present application,
Not only the meaning of the refrigerating room in a narrow sense, but also compartments such as vegetable rooms that are used at room temperature substantially higher than the freezing room are included.

Reference numeral 22 indicates the upper part of the inner box 14 in the freezer compartment 16.
It is a plate-shaped upper partition body that is divided into a freezer compartment 18 and a freezer compartment. The upper partition body 22 includes a plate-shaped synthetic resin foam body 24, a synthetic resin upper plate 26 attached to the upper and lower surfaces thereof, and a lower plate 2.
8 has a three-layer structure. Upper partition 22
A passage (not shown) is provided inside the so that cold air may circulate from the refrigerating compartment 16 to the back of the freezing compartment 18. The side portion 22a of the upper partition body 22 is formed in a taper shape such that the lower side is closer to the inside.

Reference numeral 30 indicates the lower part of the inner box 14 in the freezer compartment 18.
It is a plate-like lower partition body that is divided into a vegetable compartment 20 and a vegetable compartment. Similarly to the upper partition 22, the lower partition 30 also includes the upper plate 3
2. It has a three-layer structure of the synthetic resin foam 34 and the lower plate 36. Further, a guide member 38 for guiding the water from the evaporator to the evaporation tray in the machine room is provided at the rear part of the lower partition body 30. Side part 30 of lower partition body 30
The a is formed in a taper shape so that the upper part is closer to the inside.

Reference numeral 40 denotes an upper engaging recess for mounting the upper partition bodies 22 provided on both side walls of the upper portion of the inner box 14. The upper engaging recess 40 is provided in the freezer compartment 16 and the freezer compartment 1.
8 is provided horizontally in the front-rear direction. In addition, the upper engagement recess 40 includes the upper surface 40a, the side wall 40b, and the lower surface 4.
0c is a recess having a substantially U-shaped cross section, and the side wall 40
b is tapered so that the filling space 15 becomes thicker toward the bottom. Side part 2 of upper partition 22
Since 2a is also formed in a taper shape, the upper partition body 2
When the second side portions 22a, 22a are fitted into the upper engaging recesses 40, 40, they can be fixed horizontally without rattling.

Reference numeral 44 is a lower engaging recess for mounting the lower partition body 30 provided in the lower portion of the inner box 14. The lower engagement recess 44 is horizontally provided in the front-rear direction between the freezer compartment 18 and the vegetable compartment 20. The lower engagement recess 44 has a substantially U-shaped cross section having an upper surface 44a, a side wall 44b, and a lower surface 44c, and the side wall 44b is tapered so that the filling space 15 becomes thinner toward the lower side. Is formed in. Since the side portion 30a of the lower partition body 30 is also formed in a taper shape, the side portion 30 of the lower partition body 30 is formed.
When a and 30a are fitted into the lower engaging recesses 44 and 44, they can be fixed horizontally without rattling.

For example, as for the thickness of the filling space 15, the heat insulation thickness A of the refrigerating chamber is about 30 mm, the heat insulation thickness C of the freezing chamber is 45 mm, the heat insulation thickness B1 of the recess on the upper surface 40a of the upper engagement recess 40 is 25 mm, and the heat insulation thickness on the lower surface 40b is 40 mm. Recess heat insulation thickness B2 is 40m
m. In this case, the recess heat insulating thickness B1 and the recess heat insulating thickness B
Although the difference from 2 is 15 mm, the upper surface 40a is formed by forming the side wall 40b of the upper engaging recess 40 in a tapered shape.
There is no step between the heat insulating thickness of the lower surface 40b and the heat insulating thickness of the lower surface 40b. As a result, the thickness of the filling space 15 gradually increases from the refrigerating compartment insulation thickness A to the freezing compartment insulation thickness C.

When urethane W is injected and foamed into the filling space 15 of the cabinet 10 having the above-described structure, the boundary between the refrigerating compartment insulation thickness A and the freezing compartment insulation thickness C as described above is
Since the side wall 40b of the upper engaging recess 40 is formed so as to be gradually thickened in a taper shape, there is no extreme difference in the heat insulating thickness, and the filling space 15 of the freezer compartment 18 and the filling space 15 of the refrigerating compartment 16 are provided. And the filling space 15 of the upper engaging recess 40
An extreme pressure difference does not occur in the foaming pressure of the urethane foam W. Therefore, the side plate of the outer box 12 does not have a corrugated deformation as in the conventional case.

Further, the side wall 44 of the lower engaging recess 44 is formed.
Since b is also formed in a taper shape, it is gradually thinned from the heat insulation thickness of the freezer compartment to the heat insulation thickness of the vegetable compartment 20, and when the urethane foam W is injected and foamed into the filling space 15, the outer case 1
Corrugation does not occur on the side plate of No.2.

In the above embodiment, the inside of the cabinet is divided into three compartments, namely, a refrigerating compartment, a freezing compartment and a vegetable compartment from the upper stage. However, the present invention is not limited to this. It can be widely applied to structures in which refrigerating rooms (including vegetable rooms) are arranged next to each other.

[0024]

The refrigerator of the present invention is constructed such that the side wall of the engaging recess of the inner box into which the partition body is fitted is tapered so that the heat insulation thickness of the refrigerating compartment gradually increases to the heat insulation thickness of the freezing compartment. ing.

Therefore, when urethane is injected and foamed in the filling space, the difference in foaming pressure between the filling space in the refrigerating chamber and the filling space in the freezing chamber is reduced, and the side plates of the outer box are not deformed. ..

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a refrigerator cabinet showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the previous figure.

FIG. 3 is an enlarged vertical sectional view showing a boundary between a refrigerating room and a freezing room.

FIG. 4 is a vertical cross-sectional view of a conventional refrigerator cabinet.

FIG. 5 is an enlarged vertical sectional view showing a boundary between a refrigerating room and a freezing room in a conventional refrigerator.

[Explanation of symbols]

 10 ... Cabinet 12 ... Outer box 14 ... Inner box 15 ... Insulation filling space 16 ... Refrigerating room 18 ... Freezing room 20 ... Refrigerating room (vegetable room) 22 ... Upper partition 22a ... Side part of upper partition body 30 ... Lower partition body 30a ... Side part of lower partition body 40 ... Upper engaging recess 40b ... Side wall of upper engaging recess 44 ... Lower engaging recess 44b ... Side wall of lower engaging recess

Claims (1)

[Claims] 1. A cabinet comprising an outer box and an inner box combined with the outer box and a space filled with a heat insulating material separated from each other, and the inside of the inner box is vertically divided by a partition separate from the cabinet. In a refrigerator configured with a refrigerating compartment and a freezing compartment, the thickness of the filling space in the freezing compartment is set to be thicker than the thickness of the filling space in the refrigerating compartment, and extends in the front-rear direction on both side walls of the inner box. Further, by providing each of the engaging recesses with which both sides of the partition body engage, and forming the side wall of the inner box in the engaging recess in a taper shape, the thickness of the filling space portion of the engaging recess can be reduced. A refrigerator characterized in that it is formed so that the thickness gradually increases from the refrigerating compartment side to the freezing compartment side.