JPS595816Y2 - refrigerator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a refrigerator in which a fan motor for circulating cold air is installed outside the refrigerator, and particularly relates to an improvement in the mounting structure of the fan motor.

Generally, when a cold air circulation fan motor is installed outside the refrigerator, a drive motor storage box 10 is buried within the insulation material 5 of the refrigerator, as shown in Figure 1, in order to shorten the drive shaft as much as possible to prevent eccentricity of the drive shaft. This is fixed to the back side of the outer box 1 with screws, etc., and mounting legs 10a for attaching to the back wall 4 of the inner box 3 are provided protruding from the motor storage box 10, and the legs 10a are attached to the back side of the back wall 4. Although the legs 10a are screwed together, the center of the back wall 2 of the outer box 1 is damaged due to the pressure of the foaming of the insulating material, such as hard polyurethane, injected and foamed between the inner box 3 and the outer box 1. bulges outward as shown by the chain line in the figure, and at the same time, the rear wall 4 of the inner box at the location where the mounting leg part 10a of the storage box 10 is screwed is pulled toward the back, and the storage box 10 is tilted as shown by the chain line in the figure. Therefore, there has been an inconvenience that the fan installed therein is eccentric from a predetermined position within the refrigerator.

This invention was devised to avoid the above-mentioned inconveniences, and one embodiment of this invention will be described below.

That is, in FIG. 2, 1 is the outer box, 2 is its back wall, 3 is the inner box, 4 is the back wall of this inner box, and 5 is the hard foam injected between the outer box 1 and the inner box 3. A heat insulating material such as polyurethane, 6 is a cooler disposed in the cold air circulation path A, and 7 is a mouth case with a cold air outlet B inside the refrigerator at the top, which is installed on the back of the front decorative panel 8 inside the refrigerator. One side wall of the cold air circulation path A is shaped.

9 is a cold air circulation fan located at the air outlet B; 10
3 is a drive motor storage box for this fan, and as shown in FIG. 3, an extension pipe 10b that passes through the heat insulating material 5 to communicate the inside and outside of the refrigerator, and mounting legs 10a provided above and below the extension pipe are integrated. It is installed protrudingly.

Reference numeral 11 denotes a storage box fixing plate, which is fixed with screws via the mounting leg portions 10a of the storage box 10, with the rear wall 4 of the inner box in between.

12 is a drive motor provided in the storage box 10, 13 is a rotating shaft inserted into the extension pipe 10b and has the fan 9 attached to its tip, and 14 is a refrigerator provided on the rotating shaft. This is a packing to seal the outside of the refrigerator.

That is, to summarize this invention, the storage box 10 in which the driving electric motor 12 of the cold air circulation fan 9 is installed is installed in advance on the back side of the inner box rear wall 4 via its mounting legs 10a, and then attached to the front side of the inner box rear wall 4. are screwed together via a storage box fixing plate 11, and in this state, an undiluted solution such as the above-mentioned hard polyurethane is injected and foamed between the inner box 3 and outer box 1.

Since this invention is constructed as described above, the inner box back wall 4 around the screw fixing of the mounting leg 10a is fixed in surface contact with the storage box fixing plate 11 due to the pressure when the heat insulating material 5 is foamed. Therefore, the extension pipe 10b of the storage box 10 is always perpendicular to the inner box back wall 4 without being pulled toward the rear, and the relative position between the fan 9 and the mouse case 7 remains unchanged. This allows the fan to achieve the desired cooling performance.

[Brief explanation of the drawing]

Figure 1 is a partial cross-sectional view showing a conventional example in which a drive motor storage box is fixed to the rear wall of the outer box, Figure 2 is a longitudinal cross-sectional view of essential parts showing an embodiment of this invention, and Figure 3 is a drive motor storage box. FIG. In addition, the same reference numerals in the figures indicate the same or equivalent parts, 1 is the outer box, 2 is its back wall, 3 is the inner box, 4 is its back wall, 5 is the heat insulator, 9 is the fan, and 10 is the Drive motor storage box, 10a is the mounting leg of this storage box, 10b
1 is an extension tube, 11 is a storage box fixing plate, and 13 is a rotating shaft of the fan 9.

Claims (1)

[Scope of utility model registration request] A motor storage box is airtightly interposed between an outer box and an inner box, and an insulating material is filled and foamed between the outer box and the inner box around the motor storage box, and the motor and the motor are placed in the storage box. An extension pipe that penetrates the rotating shaft of the combined cold air circulation fan and a mounting leg protruding from the back wall of the inner box should be provided and fixed to this mounting leg by screwing through the inner box back wall. A refrigerator characterized in that the motor storage box is fixed to the rear wall of the inner box by a storage box fixing plate.