Refrigerator

Abstract

A refrigerator in which a cutout is provided at a portion corresponding to a machine room of an outer box, a resin-made outer shell of the machine room is engaged with the cutout, and a compressor, a condenser, a fan for forced cooling, etc. are placed on the outer shell. Because a machine room portion for receiving the compressors etc. and having an irregular complex shape can be integrally formed by resin molding separately from other portions, workability is improved and assembly accuracy is increased. Further, since the resin-made outer shell of the machine room of the different material from the outer box, which is made of steel plate, are joined, transmission of noise and vibration of the compressor and the fan to a refrigerator body is suppressed.

Description

technical field [0001] The present invention relates to a refrigerator in which a compressor is installed on a top surface. Background technique [0002] In recent years, from the viewpoint of protecting the global environment, refrigerators have been developed in the direction of more energy-saving, and at the same time, improvements in usability and storage are required. In order to expand the storage volume of the storage room located at the bottom of the existing refrigerator, a recess is provided in which the uppermost back of the storage room of the heat-insulated box is lowered so that the components of the refrigeration cycle are accommodated in this recess. method. An example of a refrigerator having such a structure is disclosed in JP-A-2001-99552. [0003] Fig. 8 is a cross-sectional view of a conventional refrigerator. Fig. 9 is a perspective view of main parts seen from the rear of a conventional refrigerator. The illustrated refrigerator includes: an outer ...

AI Technical Summary

Problems solved by technology

However, since the upper part of the heat insulating box 1 is deformed into a non-rectangular shape due to the concave portion 20, the strength may be insufficient.

Therefore, when the compressor 31 and the machine room fan 33 operate, these vibrations are directly transmitted to the heat insulating box 1, and the resonance sound may become louder.

[0012] In addition, if the peripheral strength of the recessed portion 20 is insufficient, the attachment strength of the handle necessary for transporting the refrigerator main body becomes insufficient, and there is a problem that it is difficult to ensure transport safety.

In addition, since the arrangement relationship between the condenser 32 and the machine room fan 33 and the arrangement relationship between the intake vent 34 and the exhaust vent 35 in the recess 20 are aligned in the depth direction of the recess 20, the inside of the recess 20 cannot be effectively utilized. Space

Moreover, also including the cooling effect of the compressor 31 by the fan 33 in the mechanical room, the heat dissipation efficiency in the recessed portion 20 is not high enough, and the heat leakage due to the temperature rise in the recessed portion 20 to the refrigerating compartment 5 may have an impact on energy saving.

[0013] In addition, when connecting the refrigerant piping of the refrigeration cycle to the compressor 31 and the condenser 32 housed in the recessed portion 20, it is necessary to pass through the steel plates of the upper surface 21 of the outer case and the back surface 22 of the outer case to arrange the refrigerant piping. The support and fixation of the refrigerant piping and the sealing performance become insufficient, and there are problems such as damage such as bending of the refrigerant piping or leakage of the foamed polyurethane insulation material 4.

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