JPS6218939Y2 - - Google Patents

Description

[Detailed description of the invention] In a conventional indirect cooling type refrigerator, as shown in FIG.
4 and covered with piping insulation material 15, but this type has the disadvantage that heat from the outside air enters through the through hole 14, and the refrigerant In heat exchange between the piping 10 and the capillary tube 11, the piping insulation material 15 using foamed polyethylene or the like has little effect, and in the condenser heat dissipation method using the draft effect, the duct area at the back is reduced by the piping insulation material 15. However, there were disadvantages such as a decrease in the amount of water used.

Therefore, in recent years, a system has been devised in which the refrigerant pipe 10 and capillary tube 11 are buried within the foam insulation layer 12 of the refrigerator body 1.
This type of structure has the disadvantage that once the foamed heat insulating material 12 is filled and foamed, the cooler 9 cannot be replaced if the cooler or defrost heater breaks down.

The present invention has been devised to eliminate the above-mentioned drawbacks and will be explained in detail below with reference to an embodiment shown in the drawings.

Reference numeral 1 denotes a refrigerator body consisting of an insulated box body divided into two upper and lower chambers by a heat insulating partition wall 2. The upper chamber is a freezer compartment 3 and the lower compartment is a refrigerator compartment 4. A heat insulating door 5 for the freezer compartment and a heat insulating door 6 for the refrigerator compartment are provided in the front opening so as to be openable and closable.

Reference numeral 7 denotes a drainage tray provided at the rear of the heat insulating partition wall 2, and inside thereof a lower part of a cooler 9 equipped with a defrosting heater 8 is installed. The cooler 9 includes a meandering refrigerant pipe 9a and a large number of heat absorption fins 9.
A refrigerant pipe 1 consisting of b and communicating with the refrigerant pipe 9a.
0 and a capillary tube 11.

The above refrigerant pipe 10 and capillary tube 11
form 〓-shaped portions 10a and 11a having straight portions of at least 50 mm or more, and these refrigerant pipes 10 and capillary tubes 11 are thermally related to each other to form inner box 1a constituting refrigerator main body 1. and the outer box 1b. A foamed heat insulating material 12 is filled and foamed between the inner box 1a and the outer box 1b, and the injection and foaming of this foamed heat insulating material 12 causes the refrigerant pipes 10 and capillary tubes 11 to
is buried and fixed. Incidentally, reference numeral 13 indicates an electric blower for forcibly circulating cold air from the cooler 9 to the freezer compartment 3 and the refrigerator compartment 4.

In the above structure, if a failure occurs in the cooler 9 or defrost heater 8, etc. and it becomes necessary to replace the cooler 9, the refrigerant pipe 10 and the carrier near the cooler connection located in the inner box 1a will be replaced. After cutting the straight portions of the square-shaped portions 10a and 11a of the pillar tube 11 and replacing it with a new cooler 9, the cut portions of the refrigerant pipe 10 and capillary tube 11 and the refrigerant pipe 10 on the new cooler 9 side and The capillary tube 11 may be connected to the capillary tube 11 by an appropriate connecting means.

As described above, the present invention creates a thermal relationship between the refrigerant pipe connected to the cooler and the capillary tube, which is composed of a meandering refrigerant pipe and a large number of heat dissipating fins, and installs the refrigerant pipe in the heat insulating layer of the refrigerator body. In a buried refrigerator, the refrigerant piping and capillary tube near the cooler connection part located inside the inner box have a 〓-shaped part with a straight section of at least 50 mm or more, so the cooler cannot be replaced. Even if the need arises, the straight part of the 〓-shaped part can be easily replaced by cutting it.This work is very easy as the straight part of the 〓-shaped part is 50 mm or more, and it is also possible to replace the straight part of the 〓-shaped part mentioned above. Since there are no through holes formed in the refrigerator body, there is no heat intrusion from outside air, and the heat exchange between the refrigerant piping and the capillary tube has a good insulation effect around the surroundings, so heat is exchanged efficiently and the refrigeration capacity can be improved. This can produce a remarkable effect.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the main part of a conventional refrigerator, Fig. 2 is a perspective view of the appearance of the refrigerator of the present invention when the door is open, Fig. 3 is a front view of the main part of the refrigerator of the present invention, and Fig. 4 is a side cross-sectional view of the main part of the refrigerator of the present invention. 1: refrigerator body, 1a: inner box, 1b: outer box, 9: cooler, 9a: refrigerant pipe, 9b: heat absorbing fin, 10: refrigerant pipe, 11: capillary tube, 10a, 11a: square-shaped part, 1
2...Foam insulation.

Claims (1)

[Scope of utility model registration request] In a refrigerator in which a refrigerant pipe connected to a cooler consisting of a meandering refrigerant pipe and a large number of heat-absorbing fins and a capillary tube are thermally related to each other and are buried in a heat insulating layer of the refrigerator body, A refrigerator characterized in that the refrigerant piping and capillary tube near the cooler connection part located inside the box are formed with a square-shaped part having a straight part of at least 50 mm or more.