JPH0522148B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigerator which is capable of fully utilizing the volumes of the freezing and refrigerating compartments, and which aims to provide a highly productive and inexpensive refrigerator.

In conventional so-called two-temperature refrigerators that have a freezer compartment and a refrigerator compartment, a partition wall manufactured separately from the inner box is built into the inner box to divide the interior of the inner box into a freezer compartment and a refrigerator compartment. The mainstream is to
In this case, the partition wall had to be made separately or it had to be built into the refrigerator, so it could not be said to be a highly productive refrigerator.

An improvement on this point was a refrigerator in which the inner boxes of the freezer compartment and the refrigerator compartment were integrally formed, and a foamed heat insulating material was filled between the inner box and the outer box.

However, in this type of refrigerator, installation of a cooler for cooling the freezer compartment and the refrigerator compartment poses a problem.

This is because, in the case of a refrigerator that uses a partition wall, the above-mentioned cooler is installed in the partition wall, and cold air is forcibly sent to the freezer compartment and refrigerator compartment using a fan to cool those compartments. However, in the case of an inner box in which the freezer and refrigerator compartments are integrally molded, the partition wall where the cooler was conventionally installed is filled with foam insulation, so the cooler cannot be used. It cannot be installed.

Therefore, in this type of refrigerator, separate coolers are usually installed in the freezer compartment and the refrigerator compartment.

However, even this type of refrigerator had the following drawbacks.

1. When installing a cooler in the freezer or refrigerator compartment,
Since it is necessary to make holes in the inner box that forms the freezer and refrigerator compartments to install the cooler, this is to prevent the foam insulation from leaking from the holes when filling the foam insulation at the manufacturing site. The work was difficult. (This also applies to refrigerators that incorporate a cooler after filling the foam insulation material.) 2. For refrigerators that have a cooler installed in the freezer or refrigerator compartment, the amount of refrigeration required by the cooler is limited. Not only does the internal volume of the refrigerator compartment or refrigerator compartment decrease, but the area around the cooler also becomes a dead space, so when comparing storage volumes with and without a cooler, this type of storage can be said to have poor volumetric efficiency.

In order to improve such drawbacks, the present invention provides: an inner box in which a freezer compartment and a refrigerator compartment are integrally formed; an outer box in which a foam insulation material is filled between the inner box; and a freezer compartment on the back side of the inner box. evaporator pipes are continuously arranged on the top surface, back surface and both side surfaces of the part, and the pipes on the top surface and the back surface continuously extend from the front and back direction of the top surface to the vertical direction of the back surface, and A plurality of bent portions are formed in the width direction of the back surface, and the pipes on both sides are continuously connected from both sides of the pipe on the top surface, and extend in the front-rear direction of both sides, and a plurality of bent portions are formed in the height direction of both sides. The refrigerator has a bent portion, and the inner box has grooves in which the pipe can be accommodated on the upper surface, back surface, and both side surfaces of the freezer compartment portion on the back surface of the inner box.

Such refrigerators have grooves on the top, back, and both sides of the freezer compartment on the back of the inner box to accommodate the evaporator pipe, so it is necessary to make a hole in the inner box for installing the cooler. Moreover, the internal volume does not decrease by the amount of the cooler. Furthermore, since the pipe has a plurality of bends in the width direction of the top surface of the freezer compartment and the height direction of both sides, it has elasticity in the width direction and height direction, and the groove is formed in the inner box. Even if the grooves are formed on a plurality of surfaces including the upper surface of the back surface, the back surface, and both side surfaces, the grooves can be expanded and contracted according to the spacing between the grooves. Thereby, the evaporator pipe can be easily assembled into the groove and can be brought into close contact with the groove.

The details of the present invention will be explained below with reference to an embodiment shown in the drawings. 1 is a refrigerator main body, 2 is an outer box forming the appearance of the refrigerator main body 1, and 3 is an inner box made of synthetic resin that integrally forms a freezer compartment 3a and a refrigerator compartment 3b. 4 is a foamed heat insulating material filled between the inner box 3 and outer box 2, 5
is a compressor, 6 is a condenser, 7 is a capillary tube, 8 is an evaporator pipe for cooling the refrigerator compartment, 9 is an evaporator pipe for cooling the freezer compartment, 10 is a header, 11
is a suction pipe. These item numbers 5 to 11
are sequentially connected in series and in a ring to form a refrigeration cycle.

A portion of the refrigerant passing through the capillary tube 7 is evaporated in the evaporator pipe 8 section, and then all of the refrigerant is evaporated in the evaporator pipe 9. In this way, the freezer compartment 3a' and the refrigerator compartment 3b' are maintained at a predetermined temperature.

In this configuration, the mounting state of the evaporation pipes 8 and 9 used in this embodiment will be explained with reference to FIG. . As shown in the figure, this groove 12 wraps most of the outer periphery of the evaporator pipes 8 and 9, and when the evaporator pipes are installed, the aluminum tape 13 is not affected by the pipes 8 and 9 and has a substantially flat surface. It is designed so that it can be pasted on.

The positions on the inner box surface to which the evaporator pipes 8 and 9 are attached are such that the refrigerator compartment 3b' is located at the back of the inner box, and the freezing compartment 3a' is provided on the top, back, and both sides of the inner box's back. . Furthermore, in this example,
The grooves 12 formed in the inner box 3 for mounting the evaporator pipes 8 and 9 are formed continuously from the front and back direction of the upper surface to the vertical direction of the back surface on the upper surface and rear surface of the freezer compartment 3a'. A refrigerating chamber 3b' is formed in the vertical direction on both sides in the front-rear direction, and is designed to facilitate the treatment of defrosting water during molding of the inner box and defrosting.

According to the present invention, grooves in which the evaporator pipe can be accommodated are formed on the top, back, and both sides of the freezer compartment on the back of the inner box, so that holes for installing the cooler are formed in the inner box. There is no need to open the door, and there is no need to work to prevent insulation from leaking. Moreover, the internal volume does not decrease by the amount of the cooler. Further, the evaporator pipe has a top surface and a rear pipe that extend continuously from the front and back direction of the top surface to a vertical direction of the back surface, and a plurality of bent portions are formed in the width direction of the top surface and the back surface, and the pipes on both sides is connected continuously from both sides of the pipe on the top surface and extends in the front-rear direction of both side surfaces, and a plurality of bends are formed in the height direction of both side surfaces, so that the top surface and the back surface are in the same width direction. It has elasticity, and it also has elasticity in the height direction from both sides of the upper surface to both sides so as to be continuous with the elasticity in the width direction. Therefore, even if it is installed on all the surfaces perpendicular to the top surface, back surface, and both side surfaces, continuous unidirectional elasticity is formed from the width direction to the height direction, and this unidirectional The pipe can be placed in the inner box by utilizing its elasticity. Therefore, the work of storing and arranging the product in the groove formed in the inner box can be done smoothly, and since it can be expanded and contracted according to the interval between the grooves, it can be brought into close contact with the inner box. Moreover, since the evaporator pipe is in close contact with the inner box, sufficient heat exchange is carried out and the inside of the freezing chamber can be efficiently cooled through the inner box.

In addition, the evaporator pipes on the back and both sides are continuous from both sides and the back side of the pipe on the top, so when installing the pipe in the inner box, connect the pipe on the top to the top of the inner box. Just by placing it on the inner box, it will be placed on the back and both sides of the inner box and will not fall, improving work efficiency.

Furthermore, the defrosting water that has melted the frost adhering to the cooling wall surface on the top surface of the box in the freezer compartment where the evaporator pipe is installed flows through the evaporator pipe that extends continuously from the front and back direction of the top surface of the inner box to the vertical direction of the back surface. Since it is guided from the top surface of the inner box to the back side along the groove in which it is stored, it is prevented from dripping onto the bottom surface of the inner box.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of a refrigerator equipped with the present invention;
2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a sectional view taken along the line BB in FIG. 1...refrigerator body, 2...outer box, 3...inner box,
4... Insulation material, 8, 9... Evaporator pipe, 12...
...Groove for holding the evaporator pipe, 13...Aluminum tape.

Claims (1)

[Scope of Claims] 1. An inner box in which a freezer compartment and a refrigerator compartment are integrally formed, an outer box in which a foam insulation material is filled between the inner box, and an upper surface of the freezer compartment portion on the back side of the inner box. , and evaporator pipes arranged continuously on the back and both sides, and the pipes on the top and back surfaces continuously extend from the front and back direction of the top surface to the vertical direction of the back surface, and the pipes extend continuously from the front and back direction of the top surface to the vertical direction of the back surface. A plurality of bent portions are formed in the direction, and the pipes on both sides are continuously connected from both sides of the pipe on the top surface, and extend in the front-rear direction of both sides, and a plurality of bent portions are formed in the height direction of both sides. The refrigerator is characterized in that the inner box is formed with grooves in which the pipe can be accommodated on the upper surface, back surface, and both side surfaces of the freezer compartment portion on the back surface thereof.