JP2556495Y2 - refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION The present invention relates to a refrigerator.

2. Description of the Related Art In recent years, refrigerators have tended to employ radiant heaters as heaters for defrosting.

Hereinafter, for example, with reference to FIGS.
A conventional example as described in JP-A-61-93782 will be described. Reference numeral 1 denotes a refrigerator-freezer body, and a cooler 3 and a blower 4 for circulating cool air are provided at the back and rear of the freezer compartment 2. The cooler 3 includes left and right side plates 5, a refrigerant pipe 6, and fins 7. A drain gutter 8 for defrost water is provided at a lower portion of the cooler 3, and a radiant heater 11 is provided so as to be held by a holder 10 screwed to a support portion 9 of the drain gutter 8. The radiant heater 11 includes a cylindrical heat-resistant glass tube 12, a coiled heater wire 13 made of an iron-chromium alloy housed therein, a cap 14 made of silicon rubber for sealing both ends of the heat-resistant glass tube 12, and the coiled heater. Connected to line 13 and cap
It is composed of a lead wire 15 extending through and a waterproof plate 16 attached to the upper surface of the radiant heater 11 by the holder 10. The drain gutter 8
An opening 17 is provided substantially at the center of the front of the refrigerator compartment. The opening 17 penetrates the inside of a partition wall 19 that separates the freezing compartment 2 from the refrigerator compartment 18 and communicates with the cool air duct 21 opening to the top 20 of the refrigerator compartment. doing.
On the other hand, on the freezer compartment 2 side, a cool air discharge hole 22 is provided in the upper part on the back side, and a suction hole 23 is provided in the lower part. Figure 6 shows the waterproof plate
FIG. 5 is a perspective view showing a method of attaching the holder 16 and the holder 10, wherein holes 24 are provided at both ends of the waterproof plate 16, and the waterproof plate 16 is attached to an A portion of the holder 10 through the holes 24. Reference numeral 25 denotes a nail for preventing the waterproof plate 16 from coming off.

The operation of the refrigerator configured as described above will be described below. The cool air generated by the cooler 3 is discharged by the cool air circulating blower 4 to the freezer compartment 2 through the cool air discharge hole 22 and to the refrigerating compartment 18 from a discharge duct (not shown). Are allowed to cool. The air that has exchanged heat in the refrigerator passes through the suction holes 23 and the cool air duct 21 and returns to the cooler 3 again, where it becomes fresh cool air again.
At this time, since the air circulating in the refrigerator and returning has become humid air containing a large amount of moisture, when passing through the cooler 3 again, it forms frost on the cooler 3 and arrives first. After the cooling operation for a certain period of time, the cooling operation is stopped and the radiant heater 11 is energized to generate heat. Water droplets fall directly on the glass tube 12 of the radiant heater 11
This is to prevent 12 from breaking. When the defrosting of the cooler 3 is completed, the cooling operation is restarted again, and the cooling function in the refrigerator is maintained.

However, in the above configuration, when the voltage is increased during defrosting or when a radiant heater having a high heater capacity must be employed, the radiant heat of the radiant heater is transmitted to the waterproof plate and the temperature rises. I do. In addition, there is a problem that heat is conducted from the waterproof plate to the holder supporting both ends of the radiant heater, and the holder is thermally deformed, whereby the support of the radiant heater becomes unstable and there is a problem in safety.

In view of the above problems, the present invention can prevent the holder from being thermally deformed and can stably support the radiant heater.

Means for Solving the Problems In order to solve the above problems, a refrigerator according to the present invention includes a cooler, a radiant heater provided at a lower portion of the cooler, a holder for supporting both ends of the radiant heater, and a radiant. It consists of a waterproof plate provided on the upper part of the heater, and both ends of the waterproof plate are held by a part of the holder,
A hole is provided on the waterproof plate at a position between a position above the heated portion of the radiant heater and a position held by the holder and above the non-heated portion of the radiant heater. It is characterized by the following.

Action The present invention reduces heat conduction from the waterproof plate to the holders supporting both ends of the radiant heater by providing a hole in a part of the waterproof plate by the above configuration, thereby preventing thermal deformation of the holder. The support of the radiant heater can be kept stable.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the related art are denoted by the same reference numerals, and detailed description thereof is omitted.

Reference numeral 26 denotes a waterproof plate of the present invention, and a part of the waterproof plate 26 is provided with a hole 27 having a flange on the side of the cooler 3. Each of the holes 27 is provided on the waterproof plate 26 on the left and right sides. Drilled hole 27
Is provided outside the end face of the glass tube 12 as shown in FIG.

The operation of the refrigerator configured as described above will be described. Even if the voltage fluctuation is large, when a radiant heater having a high heater capacity must be employed, the radiant heat of the radiant heater 11 is transmitted to the waterproof plate 26, and the temperature rises. Further, heat is conducted from the waterproof plate 26 to the holder 10 that supports both ends of the radiant heater 11. However, by providing a hole 27 in a part of the waterproof plate 26, the heat conducting section of the waterproof plate 26
The heat conduction from the waterproof plate 26 to the holder 10 supporting both ends of the radiant heater 11 is reduced by reducing the number of parts 27, preventing the holder 10 from being thermally deformed and keeping the support of the radiant heater 11 stable. .

Further, as shown in FIG. 3, the drain hole 27 is provided outside the end face of the glass tube 12 and has a flange portion on the side of the cooler 3, so that defrost water directly drops on the glass tube 12. It doesn't even make a humming sound.

Effect of the Invention As described above, the present invention comprises a radiant heater provided at the lower part of the cooler and the cooler, a holder for supporting both ends of the radiant heater, and a waterproof plate provided at the upper part of the radiant heater, Since both ends of the waterproof plate are held by a part of the holder and a hole is provided in a part of the waterproof plate, a radiant heater having a high heater capacity must be adopted even if voltage fluctuation is large. Even when you have to,
By providing a hole in a part of the waterproof plate, heat conduction from the waterproof plate to the holder that supports both ends of the radiant heater is reduced, preventing the holder from being thermally deformed and keeping the radiant heater stable. Can be.

In addition, the defrosting water does not drop directly on the glass tube to generate a hum.

[Brief description of the drawings]

FIG. 1 is a sectional view of a refrigerator showing one embodiment of the present invention, FIG.
FIG. 3 is a perspective view of the periphery of the radiant heater of the present invention, FIG.
FIG. 4 is a sectional view of a conventional refrigerator, FIG. 5 is a front view around a conventional radiant heater, and FIG. 6 is a perspective view showing a method of attaching a waterproof plate and a holder of the conventional radiant heater. 3 ... cooler, 10 ... holder, 11 ... radiant heater, 26 ... waterproof plate, 27 ... hole.

Claims (1)

(57) [Scope of request for utility model registration] A radiant heater provided at a lower portion of the cooler; a holder for supporting both ends of the radiant heater; and a waterproof plate provided at an upper portion of the radiant heater. Both ends are held by a part of the holder and are on the waterproof plate at a position between a position above a heating portion of the radiant heater and a position held by the holder, and the radiant A refrigerator having a hole at a position above a non-heating portion of a heater.