JPS6049827B2 - Manufacturing method for refrigerator insulation box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a heat insulating box for a refrigerator in which chambers are formed in three levels, upper and lower.

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 showing the overall configuration of a refrigerator, 1 is a heat insulating box body, which is provided with a refrigerating compartment 2, a freezing compartment 3, and a vegetable storage compartment 4 in the upper, middle, and lower stages, respectively. This insulating box body 1 is made of iron plate and is made of iron plate.
Small, Small 7j■Sc A box-shaped freezer compartment cooler for forming the compartment 3 and a second white cloth 8 for forming the vegetable storage compartment 4 are installed, and the outer box 5, the first inner sleeve 6, and the freezer The space formed between the room cooler 7 and the second inner box 8 is filled with a foamable heat insulating material 9 such as foamable urethane. Reference numeral 10 denotes a first connection frame made of iron plate attached to the boundary between the refrigerator compartment 2 and the freezer compartment 3 on the front surface of the outer box 5, and this connects the first white cloth 6 and the freezer compartment cooler 7. It is something.

Reference numeral 11 denotes a second connection frame made of iron plate attached to the boundary between the freezer compartment 3 and the vegetable storage compartment 4 on the front side of the outer box 5, and this connects the freezer compartment cooler 7 and the second white cloth 8. There are things to do. The freezer compartment cooler 7 is connected to the first and second connection frames 10 and 11 via a substantially rectangular cylindrical insulating plate 12 attached to the front opening by screws or the like. Reference numeral 13 denotes a plurality of seal members for preventing leakage of the foamable heat insulating material 9 during foaming.

14 is a compressor placed and fixed on the base 15 on which the insulation box 1 is placed, 16 is a condenser mounted on the back of the insulation box 1, and 17 is a cooling unit for the refrigerator compartment installed in the upper part of the refrigerator compartment 2. A container 18 is a storage room cooler disposed at the upper part of the vegetable storage room 4, and as shown in the cooling cycle of FIG. is connected to the inlet 18a of the storage room cooler 18, and the storage room cooler 18
Connect the outlet 18b of the refrigerator compartment cooler 17 to the inlet 17a of the refrigerator compartment cooler 17 via the auxiliary capillary tube 20, and connect the outlet 17b of the refrigerator compartment cooler 17 to the inlet 7a of the freezer compartment cooler 7 via the vibrator 21. and the outlet 7b of the freezer compartment cooler 7
is connected to the suction port 14b of the compressor 14 via the suction vibrator 22.

Reference numeral 23 denotes a hot vibrator for preventing dew, which is constructed by installing a vibrator connecting the condenser 16 and the main capillary tube 19 along the inner side of the front opening periphery of the refrigerator compartment 2 and the freezing compartment 3.

24, 25, and 26 are vibrators for draining defrosting water, etc., 27 and 28 are electric heaters for preventing connection in winter, etc., 29
, 30 and 31 are doors for opening and closing the refrigerator compartment 2, the freezer compartment 3, and the vegetable storage compartment 4, respectively.

Next, a method for manufacturing the heat insulating box 1 constructed as described above will be explained.

First, an outer box 5 with an open front is formed from an iron plate, and the first connecting frame 10 is attached to the front of the outer box 5 by welding or the like, and a seal member 13 and a hot vibrator 23 are arranged at predetermined locations. I'll keep it. In parallel with the formation of this outer box 5, the freezer compartment cooler 7 and the refrigerator compartment cooler 17 are connected with a vibrator 21, and the auxiliary capillary tube 20 is connected to the refrigerator compartment cooler 17, and The suction vibrator 22 is connected to the cooler 7, thereby forming a cooling unit 32. Then, the cooling unit 32 is tilted from the relatively large opening below the first connecting frame 10 on the front surface of the outer box 5 as shown by the two-dot chain line in FIG.
and place it in place. At this time, the tip portions of the auxiliary key pillar tube 20, the suction vibrator 22, and the hot vibrator 23 are made to protrude outward from the back plate 5a of the outer box 5. After this, the second connection frame 11 is attached to the front of the outer box 5.
This second connecting frame 1 is attached by welding or the like.
Attach the seal member 13 to 1. The first inner box 6 and the second inner box 8 are inserted into the outer box 5 from the front side (see FIG. 4). An opening 6a is formed in the upper part of the back of the first inner box 6, and the refrigerator compartment cooler 17 is installed in the opening 6a.
It enters into the first inner box 6 through. After that, the outer box 5, the first inner box 6, the freezer compartment cooler 7 and the second
A stock solution of foamed urethane or the like is injected into the space existing between the inner boxes 8 to fill the foamed heat insulating material 9. Next, the heat insulating box 1 formed as described above is fixed on the base 15, and then the condenser 16 is attached to the back plate 5a of the outer box 5, and the storage room cooling The container 18 is installed and piped to form a refrigeration cycle as shown in FIG. A cavity 33 is formed at the back of the upper part of the foam heat insulating material 9, and a temperature control device (not shown) is formed in the back plate 5a of the outer box 5 after manufacturing the heat insulating box 1. This is used when attaching to the outside of the back of the first inner box 6 through the opening 34, into which the heat insulating block 35 will be fitted later. In this way, according to this embodiment, the cooling unit 3
2 into the outer box 5 from the front surface is performed before attaching the second connecting frame 11 to the front surface of the outer box 5. Therefore, the cooling unit 32 can be inserted under the first connecting frame 10. It becomes possible to insert it into the outer box 5 by utilizing the relatively large space that exists. That is, if the second connecting frame 11 is attached to the outer box 5 together with the first connecting frame 10 in advance, these will get in the way and it will be difficult to insert the cooling unit 32 into the outer box 5 from the front side. However, such a problem does not occur in this embodiment. Moreover, since only the first connection frame 10 is attached to the outer box 5 in advance, the cooling unit 32 is attached to the outer box 5.
When inserted into the interior, the cooling unit 32 can be positioned based on the first connection frame 10. Also, a cooler for the freezer 7, a cooler for the refrigerator 17, an auxiliary capillary tube 20, a vibrator 21, a suction vibrator 22
Since the auxiliary capillary tubes 20 and 20 can be connected to each other in advance, piping work can be easily performed and the auxiliary capillary tubes 20
, 21, etc., which connect the coolers 7, 17, and 18, are embedded in the foam heat insulating material 9 and are in a heat-insulated state, so that cooling efficiency is improved.

The reason why the freezing compartment 3 is provided in the middle of the insulation box 1 is that the freezing compartment 3 is cooled to a much lower temperature than the other compartments 2 and 4, so if it is provided in the upper or lower stage, the foam insulation material 9 This is because it becomes susceptible to the thermal influence of outside air through the air.

As explained above, in the present invention, a cooling unit formed by connecting a refrigerator compartment cooler and a freezer compartment cooler is inserted into an outer box from the front side, and then a second cooling unit is inserted into the outer box from the front side. At the same time as attaching the connecting frame, it is arranged from the front inside the first inner box for forming the refrigerator compartment and the second inner box for forming the storage compartment, and the outer box, the cooler for the freezer compartment, the first and Since the space between the second inner boxes is filled with foam heat insulating material, the cooling unit can be easily inserted into the outer box without being obstructed by the second connection frame, and Piping for configuring the cooling cycle can be easily done, and the vibe that connects the cooler for the refrigerator and the cooler for the freezer is embedded in the foam insulation material, which improves cooling efficiency. is obtained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a vertical cross-sectional view of the entire refrigerator, Fig. 2 is a cooling cycle configuration diagram, and Fig. 3 is a cooling cycle configuration diagram.
The figure and FIG. 4 are manufacturing process diagrams of the heat insulating box. In the figure, 1 is an insulated box, 2 is a refrigerator compartment, 3 is a freezer compartment, 4 is a vegetable storage compartment, 5 is an outer box, 6 is a first inner box, 7 is a cooler for the freezer compartment, and 8 is a second Inner box, 9 is foam insulation material, 10 is the first
11 is a second connection frame, 17 is a refrigerator compartment cooler, 18 is a storage compartment cooler, and 32 is a cooling unit.

Claims (1)

[Claims] 1 In a case where a freezing compartment is provided in the middle of an insulated box and a refrigerating compartment and a storage compartment are provided on both upper and lower sides thereof, the front is opened and a first connecting frame is installed at the boundary between the refrigerating compartment and the freezing compartment on the front. A cooling unit configured by connecting a refrigerator compartment cooler and a box-shaped freezer compartment cooler for forming the freezer compartment is inserted into the outer box formed from the opening below the first connection frame. After that, a second connecting frame is attached to the boundary between the freezer compartment and the storage compartment on the front surface of the outer box, and the first inner box for forming the refrigerator compartment and the inserting and arranging the second inner box for forming the storage chamber;
A method for manufacturing a heat insulating box for a refrigerator, characterized in that a space between an outer box, a first inner box, a freezer cooler, and a second inner box is filled with a foaming heat insulating material.