JPH0548059Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention particularly relates to an improvement in the mounting structure of a heat-sensitive tube of a thermostat that adjusts the temperature of refrigerators and freezers.

Prior Art The conventional heat-sensitive tube mounting structure of a thermostat is as shown in FIGS. 4 and 5, in which a heat insulating material 3 is filled between an outer box 1 and an inner box 2. ing. A refrigerant evaporation pipe 4 is arranged on the outer surface of the inner box 2 and attached with adhesive. Further, the open end 7 of the thermally non-conductive heat-sensitive cylinder 6 connected to the heat-conductive heat-sensitive cylinder 5 is made to protrude outside the outer box 1, and is located between the refrigerant evaporation tubes 4 on the outer surface of the inner box 2. It is tightly fixed with aluminum foil tape 8 or the like. A heat-sensitive tube 9 of a thermostat for sensing the temperature inside the refrigerator is inserted into the heat-nonconductive heat-sensitive cylinder 6 connected to the heat-conductive heat-sensitive cylinder, and the open end of the heat-nonconductive heat-sensitive cylinder 6 is inserted. No. 7 had a structure tightly fixed with a sealant 10.

Problems to be Solved by the Invention However, with this structure, it is difficult to position the thermally conductive heat-sensitive cylinder 5 between the refrigerant evaporation tubes 4 when it is attached to the outer surface of the inner box 2 using aluminum foil tape 8 or the like. Therefore, the thermally conductive heat-sensitive cylinder 5 has a drawback that it is biased to the left or right side of the adjacent refrigerant evaporation tube 4. Furthermore, when the aluminum foil tape 8 is used to fix the thermally conductive thermosensitive cylinder 5 to the outer surface of the inner box 2, the adhesive part of the aluminum foil tape 6 is peeled off due to the heat generated during the formation of the heat insulating material, and the outer surface of the inner box 2 has a thermally conductive surface. The heat cylinder 5 cannot be securely fixed, and the heat conduction from the refrigerant evaporation pipe 4 and the inner box 2 to the thermally conductive heat sensitive cylinder 5 is poor. Therefore, there was a drawback that the operating rate of the compressor became high and the amount of power consumed increased.

Therefore, the present invention solves the above-mentioned drawbacks and installs a thermally conductive heat-sensitive cylinder with an appropriate distance between the outer surface of the inner box and the adjacent refrigerant evaporation tubes. The purpose is to fix a conductive heat-sensitive cylinder.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a pipe fixing plate integrated with a thermally conductive cylinder having a plurality of grooves located on the outer surface of the inner box. A refrigerant evaporation tube and a thermally nonconductive heat-sensitive cylinder are housed in the groove, and these tubes are fixed to the outer surface of the inner box by a tube fixing plate that is integrated with the thermally conductive cylinder.

Effect With this configuration, the refrigerant evaporation tube and the thermally non-conductive cylinder can be brought into close contact with the outer surface of the inner box within the groove provided in the tube fixing plate, and the thermally conductive cylinder and An integrated tube fixing plate can be installed between adjacent refrigerant evaporation tubes without any bias. Moreover, since it is sandwiched between the inner box and the tube fixing plate which is integrated with the heat conductive cylinder, the heat conduction effect from the inner box and the refrigerant evaporation tube can be enhanced.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

1 is an outer box, and a heat insulating material 3 is filled between it and the inner box 2. A tube fixing plate 11 integrated with the heat conductive cylinder is provided on the outer surface of the inner box 2. A plurality of grooves 12 that open toward the inner box side are provided on one side of the tube fixing plate 11, and the refrigerant evaporation tube 4 and the thermally nonconductive heat-sensitive cylinder 6 are housed in the grooves 12, respectively. , is brought into reliable contact with the outer surface of the inner box 2. A heat-sensitive tube 9 of a thermostat for sensing the internal temperature of the refrigerator is inserted into the open end 7 of the non-conductive heat-sensitive cylinder 6, and a sealant 10 is inserted into the open end 7 of the non-conductive heat-sensitive cylinder 6.
It is tightly fixed. The tube fixing plate 11 is fixed to the outer surface of the inner box 2 at a plurality of locations, and the refrigerant evaporation tube 4 and the outer surface of the inner box 2 are also fixed by a thermally conductive member 13. Therefore, the refrigerant evaporation pipe 4
The cooled heat is conducted to the inner box 2 and is also conducted through the tube fixing plate 11, so that a large heat transfer effect can be obtained. Furthermore, since the thermally non-conductive cylinder is also securely fixed by the tube fixing plate 11, it is less likely to be separated from the inner box 2, and the operating rate of the compressor is more stable than before. Furthermore, when the compressor is stopped, the area near the tube fixing plate 11 takes longer to store cold than before, so power consumption can be reduced.

Effects of the invention As is clear from the above explanation, the invention has the following effects:
The tube fixing plate has a concave groove and is securely attached to the outer surface of the inner box, so that it is not positioned unevenly between the refrigerant evaporation tube and does not float up from the outer surface of the inner box. be. Therefore, heat conduction from the refrigerant evaporation tube and the inner box is improved, and the operating rate of the compressor is more stable than before. Furthermore, even when the compressor is stopped, the area near the tube fixing plate takes longer to store cold than in the past, so power consumption can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the main parts of a freezer showing an embodiment of the present invention, Fig. 2 is a cross-sectional view of the main parts of a freezer showing an embodiment of the invention, and Fig. 3 is an embodiment of the invention. FIG. 4 is a vertical cross-sectional view of a main part of a conventional freezer, and FIG. 5 is a cross-sectional view of a conventional freezer. 1...outer box, 2...inner box, 3...insulation material, 4...
...refrigerant evaporation tube, 6...thermally nonconductive heat-sensitive cylinder, 11...
...Pipe fixing plate, 12... Concave groove, 13... Heat conductive member.

Claims (1)

[Scope of utility model registration request] an outer box, an inner box, a heat insulating material filled between the two boxes, a thermally non-conductive cylinder penetrating the outer box and the heat insulating material and disposed with a thermally conductive member on the outer surface of the inner box; The thermally non-conducting cylinder and the refrigerant evaporation tube are placed in the groove of the tube fixing plate, which is composed of a refrigerant evaporation tube and a tube fixing plate, and is provided with a groove opening toward the outer surface of the inner box. A mounting structure for a heat-sensitive tube of a thermostat, characterized in that it is fixed to the outer surface of an inner box by the fixing plate.