JP2862725B2 - refrigerator - Google Patents

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 filling space 115 filled with urethane foam W therebetween. Cabinet 11
The inside of 1 is vertically divided by separate plate-shaped partition members 122 and 130 to form a refrigerator compartment 116, a freezer compartment 118 and a vegetable compartment 120.

[0003] The partition member 122 is horizontally fixed inside the cabinet 111 as follows. That is, the engaging recesses 140 extend in the front-rear direction on each of 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 insulating effect of the freezing room 118 is
In order to increase the heat insulation effect of the freezing room 118,
Is thicker than the thickness of the filling space 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, in order to increase the heat insulating effect of the freezing compartment 118 as described above, as shown in FIG.
Extreme steps occur in the thickness B (hereinafter referred to as the recess insulation thickness) of the filling space 115 and the freezing compartment insulation thickness C at the position of 0.

For example, if the heat insulation thickness A of the refrigerator compartment is 30 mm, the heat insulation thickness B of the recess is 25 mm, and the heat insulation thickness C of the freezer is 45 mm, the difference between the heat insulation thickness C of the recess and the heat insulation thickness C of the freezer compartment is 20 mm.
And become extremely large. Thereby, when the urethane foam W is filled, the amount of the urethane foam W filled in the filling space 115 in the freezing room 118 and the filling space 115 in the refrigerating room 116 and the filling space 115 in the engaging recess 140 is reduced. In contrast, when this foams about 40 times, a difference occurs in the foaming pressure. That is, the freezing room 1 with a large filling amount
The foaming pressure is high in the filling space 115 of the cooling chamber 116 and the filling space 115 of the refrigerator compartment 116, and the foaming pressure is low in the filling space 115 of the engaging recess 140 with a small filling amount.

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

However, in recent refrigerators, a heat-dissipating pipe condenser is removed from the side plate of the outer box 112 and disposed on the bottom surface to facilitate disposal of the refrigerator due to environmental problems and the like. Therefore, the rigidity of the side plate of the outer box 112 was weakened.

As a result, as shown by the two-dot chain line in FIG. 5, the side plates in the freezing chambers 118 and 116 in which the foaming pressure of the urethane foam W is large expand outward and deform into a waveform. Has arisen.

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

In view of the foregoing, the present invention provides a refrigerator in which the side plate of the outer box is not deformed when urethane foam W is injected into the filling space.

[0012]

The refrigerator according to the present invention comprises a cabinet comprising an outer box and an inner box combined with the outer box and a space filled with a heat insulating material. The cabinet is separate from the cabinet. A refrigerator that forms a refrigerator compartment and a freezer compartment by partitioning the inner box interior up and down with a partition body, wherein the thickness of the filling space portion in the freezing compartment is provided thicker than the thickness of the filling space portion in the refrigerator compartment, On both side walls of the inner box, engaging recesses extending in the front-rear direction and engaging both sides of the partition body are provided, and the side walls of the inner box in the engaging recesses are formed in a tapered shape. The thickness of the filling space portion of the engagement concave portion is formed so as to gradually increase from the refrigerator compartment side to the freezer compartment side.

[0013]

[Operation] In the refrigerator having the above-described configuration, the side wall of the inner box in the engagement recess is formed in a tapered shape so that the thickness of the filling space of the engagement recess is reduced from the side of the refrigerator compartment to the freezer compartment. It was formed so that it gradually became thicker to the side. Therefore, since there is no extreme difference between the thickness of the filling space of the engaging recess and the heat insulation thickness of the refrigerator compartment and the freezer compartment, when the urethane is injected and foamed inside the filling space, the filling space of the freezer compartment is not filled. The pressure difference of the foaming pressure in the filling space of the refrigerating compartment and the filling space of the engaging recess does not change suddenly, and the side plate of the outer box does not deform.

[0014]

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 10 denotes a refrigerator cabinet according to an embodiment of the present invention, which is an outer box 12 formed of an iron plate.
And the outer box 12 with the filling space 15 of the urethane foam W therebetween.
And the inner box 14 combined. Cabinet 1
0, the refrigerator compartment 16 is in the upper stage, and the freezer compartment 1 is in the middle stage.
8. The lower section is a vegetable room 20. The room temperature of the vegetable room 20 is set substantially equal to the room temperature of the refrigerator room 16. Therefore, the vegetable room 20 is substantially a refrigerator room. In addition, the refrigerator compartment described in claim 1 of the present application claims:
It includes not only a refrigerator room in a narrow sense but also a compartment room which is used at a room temperature substantially higher than a freezer room, such as a vegetable room.

Reference numeral 22 denotes an upper part of the inner box 14
And a freezer compartment 18 which is a plate-like upper partition body. The upper partition 22 includes a plate-shaped synthetic resin foam 24, a synthetic resin upper plate 26 attached to the upper and lower surfaces thereof, and a lower plate 2.
8 and has a three-layer structure. Upper partition 22
Is provided with a passage (not shown) such that cool air circulates from the refrigerator compartment 16 to the rear of the freezer compartment 18. The side part 22a of the upper partition body 22 is formed in a tapered shape so that the lower part is inward toward the lower side.

Reference numeral 30 denotes a lower part of the inner box 14
It is a plate-shaped lower partitioning body which divides into a vegetable compartment 20 and a vegetable compartment 20. The lower partition 30 is also similar to the upper partition 22 in the upper plate 3.
2. It has a three-layer structure of a synthetic resin foam 34 and a lower plate 36. In addition, a guide member 38 for guiding water from the evaporator to an evaporating dish in the machine room is provided at a rear portion of the lower partition body 30. Side 30 of lower partition 30
“a” is formed in a tapered shape so that the upper side is closer to the inside.

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

Reference numeral 44 denotes a lower engaging recess for mounting the lower partition 30 provided at the lower part of the inner box 14. The lower engagement recess 44 is provided horizontally between the freezing compartment 18 and the vegetable compartment 20 in the front-rear direction. The lower engaging concave portion 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 thickness of the filling space 15 becomes thinner downward. Is formed. Since the side 30a of the lower partition 30 is also formed in a tapered shape, the side 30a of the lower partition 30 is formed.
When the a and 30a are fitted into the lower engaging recesses 44, 44, they can be fixed horizontally without rattling.

For example, the thickness of the filling space portion 15 is such that the heat insulation thickness A of the refrigerator compartment is about 30 mm, the heat insulation thickness C of the freezer compartment is 45 mm, the heat insulation thickness B1 of the upper surface 40a of the upper engagement recess 40 is 25 mm, and the heat insulation thickness B1 of the lower surface 40b is 25 mm. Depression insulation thickness B2 is 40m
m. In this case, the concave insulation thickness B1 and the concave insulation thickness B
2 is 15 mm, but by forming the side wall 40b of the upper engaging recess 40 in a tapered shape, the upper surface 40a
There is no step between the heat insulation thickness of the lower surface 40b and the heat insulation thickness of the lower surface 40b. Thereby, the thickness of the filling space 15 gradually increases from the heat insulation thickness A of the refrigerator compartment to the heat insulation thickness C of the freezer compartment.

When urethane W is injected and foamed into the filling space 15 of the cabinet 10 having the above structure, as described above, the boundary between the heat insulation thickness A of the refrigerator compartment and the heat insulation thickness C of the freezer compartment is:
Since it is formed so as to be gradually thickened in a tapered shape by the side wall 40b of the upper engaging concave portion 40, there is no extreme difference in heat insulation thickness, and the filling space portion 15 of the freezing room 18 and the filling space portion 15 of the refrigeration room 16 are provided. And the filling space 15 of the upper engaging recess 40
Does not cause an extreme pressure difference in the foaming pressure of the urethane foam W. Therefore, the side plate of the outer box 12 is not deformed in a waveform as in the related art.

Further, the side wall 44 in the lower engagement concave portion 44
Since b is also formed in a tapered shape, the insulation thickness in the freezer compartment is gradually reduced from the insulation thickness in the vegetable compartment 20, and when the urethane foam W is injected and foamed into the filling space 15, the outer box 1
No deformation of the waveform occurs on the side plate of No. 2.

In the above-described embodiment, the interior of the cabinet is formed with three compartments of a refrigerator compartment, a freezer compartment, and a vegetable compartment from the upper stage. However, the present invention is not limited to this. It can be widely applied to a structure in which a refrigerator room (including a vegetable room and the like) is arranged adjacent to the refrigerator room.

[0024]

The refrigerator of the present invention is configured such that the side wall of the engagement recess of the inner box into which the partition is fitted is formed in a tapered shape, so that the thickness gradually increases from the heat insulation thickness of the refrigerator compartment to the heat insulation thickness of the freezer compartment. ing.

Therefore, when urethane is injected and foamed in the filling space, the pressure difference in the foaming pressure between the filling space in the refrigerator compartment and the filling space in the freezer compartment is reduced, and the side plate of the outer box is not deformed. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refrigerator cabinet showing one 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 refrigerator compartment and a freezer compartment.

FIG. 4 is a longitudinal sectional view of a cabinet of a conventional refrigerator.

FIG. 5 is an enlarged vertical sectional view showing a boundary between a refrigerator compartment and a freezer compartment in a conventional refrigerator.

[Explanation of symbols]

 10 Cabinet 12 Outer box 14 Inner box 15 Filling space of heat insulating material 16 Refrigerator room 18 Freezer room 20 Refrigerator room (vegetable room) 22 Upper partition 22a Upper partition body side 30 Lower partition body 30a Lower partition body side 40 Upper engagement recess 40b Upper engagement recess side wall 44 Lower engagement recess 44b Side wall of lower engagement recess

Claims (1)

(57) [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, wherein the interior of the inner box is vertically separated by a partition body separate from the cabinet. In the refrigerator constituting the refrigerator compartment and the freezer compartment, the thickness of the filling space in the freezer compartment is provided to be thicker than the thickness of the filling space in the refrigerator compartment, and extends in the front-rear direction on both side walls of the inner box. In addition, by providing engagement recesses with which both side portions of the partition body are engaged, and forming a side wall of the inner box in the engagement recesses in a tapered shape, the thickness of the filling space portion of the engagement recesses is reduced. A refrigerator formed so as to gradually increase in thickness from the refrigerator compartment side to the freezer compartment side.