JPH0336863Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a refrigerator, and particularly to a one-door refrigerator using a pipe-on-sheet type cooler.

[Prior art and its problems]

Traditionally, one-door refrigerators that can make ice have used aluminum roll bond type coolers, and as shown in Figure 3, an aluminum roll bond type cooler 1 is installed horizontally inside the refrigerator. Ice was made by placing an ice tray on top of this horizontal cooler 1.

This aluminum roll bond type cooler has grooves shaped like refrigerant pipes formed on a thin aluminum plate.
Refrigerant piping is constructed by joining two facing aluminum plates with grooves formed together, or one is joined as a flat plate, but the manufacturing process is not simple and is expensive. It was costly.

On the other hand, as shown in Fig. 4, a pipe-on-sheet type cooler is constructed by arranging a refrigerant pipe 4 on the side of the insulation material 3 of the inner wall 2a of the plastic inner box 2 of the refrigerator. Although it is cheaper than the bond type cooler, it is not possible to make ice unless the cooler is tightly attached to the bottom of the ice tray.
Refrigerators equipped with conventional pipe-on-sheet type coolers installed in A are not capable of making ice and can only be used for simple refrigeration.

[Means for solving problems]

In order to solve the above problems, this idea forms a nearly horizontal step at the bottom of the inner box, arranges a refrigerant pipe inside this step, and fills it with heat insulating material. In addition to using the bottom as an ice-making corner,
A protrusion that presses downward the upper edge on the back side of the ice tray placed on the step was formed by bulging out the back wall of the inner box.

[Effect]

Since there is a refrigerant pipe on the horizontally bulging step, if an ice tray is placed on this step, it will be sufficiently cooled and ice can be made. The ice tray is held down by the protrusion on the back wall and stably rests on the step.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

10 is the door, 11 is the plastic inner box, 1
2 is an outer box, a heat insulating material 13 is filled between the inner box 11 and the outer box 12, and a compressor 14 is provided below.

A substantially horizontal stepped portion 15 is provided at the bottom of the inner box 11.
The inside of this stepped portion 15 is also filled with a heat insulating material 13, and a pipe 1 for refrigerant for ice making is installed on the inner surface.
6 is arranged to make this step 15 an ice-making corner, and on the back wall 11a of the inner box 11, when the ice tray A is placed on the step 15, the back upper edge of the ice-making tray A is placed. The protrusion 11c that presses downward is
The rear wall portion 11a is formed to bulge out.

Further, a refrigerant pipe 17 for normal cooling is also arranged on the vertical back wall portion 11a. The details of how to install the refrigerant pipes 16 and 17 in the inner box 11 are as shown in FIG. Cover the pipe 1 with the sheet 18 of
This structure prevents the insulating material 13 from entering between the inner box 11 and the inner box 11, thereby increasing heat transfer efficiency. The stepped portion 15 is sloped slightly lower on the back side, and the drain pipe 19 for defrosting is brought out from the back to the outside, and the drain is guided to a drain tray 20 disposed above the compressor 14 and absorbed by the heat of the compressor 14. I try to dissipate it.

In the above-mentioned refrigerator, if the ice tray A is placed on the stepped portion 15 and cooled, the bottom of the ice tray is in direct contact with the cooler, so it is sufficiently cooled and ice can be made.

Then, a stepped portion 15 in which the refrigerant pipe 16 is arranged.
The top surface of is uneven as shown in Figure 2 above, so
An ice tray placed on top of this is unstable, but when the ice tray is pushed in, the protrusion 11c formed by expanding the inner box has some elasticity.
1c and the upper surface of the stepped portion 15 press down the upper edge of the ice tray on the back side as if clipping the ice tray, thereby stabilizing the ice tray.

[Effect of idea]

As explained above, according to the present invention, a substantially horizontal stepped portion is formed at the bottom of the inner box, a refrigerant pipe is arranged inside this stepped portion, and a heat insulating material is filled, so that the bottom of the inner box is is used as an ice-making corner, and the protrusion that presses down the upper edge of the back side of the ice-making tray placed on the step is formed by bulging out the back wall of the inner box, so even though it is a pipe-on-sheet method, It is possible to make ice without any ice making, a low-cost refrigerator capable of making ice is obtained, and an ice tray can be stably placed in an ice making corner.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a refrigerator showing one embodiment of the present invention, Fig. 2 is a detailed explanatory view of the refrigerant pipe installation in Fig. 1, Fig. 3 is a sectional view showing a conventional refrigerator, and Fig. 4 is a sectional view of a refrigerator showing an embodiment of the present invention. It is a sectional view of another conventional refrigerator. 10...Door, 11...Inner box, 11a...Back wall, 11c...Protrusion, 13...Insulating material, 15...
Stepped portion, 16...Refrigerant pipe, A...Ice tray.

Claims (1)

[Scope of utility model registration request] A nearly horizontal step is formed at the bottom of the inner box of a one-door refrigerator, a refrigerant pipe is placed inside this step, and a heat insulating material is filled, so that the bottom of the inner box becomes an ice-making corner. The refrigerator further includes a protrusion that presses down the upper edge of the ice tray placed on the stepped portion on the back side by bulging out the back wall of the inner box.