JPS581348B2 - How to install a refrigerator's anti-condensation heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for installing an anti-dew heater in a refrigerator.

In a refrigerator, when the door is opened and closed, the periphery of the front opening is cooled and dew forms there. Therefore, a condenser pipe is attached to the front flange of the outer box of the refrigerator body to heat the front flange. This is to prevent condensation.

However, since the condenser pipe is fixed by the foam insulation material filled inside the refrigerator body,
There was a problem in that the seal was not sufficient and the condenser pipes were corroded by water droplets that entered the refrigerator body.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for attaching a dew-proof heater for a refrigerator, which is effective in ensuring the sealing of the dew-proof heater.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes an outer box made of iron plate with the bottom and both front and back sides open.A flange portion 2 is integrally bent around the front periphery, a lower horizontal frame 3 is fixed to the lower part, and a front side frame 3 is fixed to the lower part of the flange portion 2. A partition frame 6 that partitions the opening into a refrigerator compartment side opening 4 and a freezer compartment side opening 5 is fixed.

Reference numerals 7 to 11 indicate clamping plate portions formed by bending the tip portions of the flange portions 2 of the outer box 1 into a substantially S-shape. The holding plate portions 7 to 1 are discontinuous.
A claw piece 12 is cut and raised at each end of 1.

Reference numeral 13 indicates a clamping plate portion formed by bending the upper edge of the lower horizontal frame 3 into a substantially S-shape, and reference numerals 14 and 15 indicate a holding plate portion formed by bending the upper and lower edges of the partition frame 6 into a substantially S-shape. This is the clamping plate part formed by.

Reference numeral 16 denotes a condenser pipe for the cooling cycle, which is connected to the front opening periphery of the outer box 1, that is, the flange 2 and the back side of the partition frame 6, along the refrigerator compartment side opening 4 and the freezer compartment side opening 5, and is connected to the first condenser pipe. It is laid as shown in the drawings and FIG. 2, and the condenser pipe 16 is temporarily fixed by bending each claw piece 12 as shown in FIG.

Next, styrene. Isoprene. A heat-melting resin 17 such as rubber is heated and melted, and it is applied to the straight portions G to L of the front opening periphery of the outer box 1, that is, the flange portion 2 and the back side of the partition frame 6, excluding corner portions A to F. (For convenience, the injection point is indicated by a diagonal line downward to the left in Figure 2).
A portion of the condenser pipe 16, that is, a portion corresponding to the straight line portions G to L is embedded and fixed by the hot-melt resin 17.

Reference numeral 18 denotes an inner box for forming a refrigerator compartment, which is a storage room; 19, a box-shaped cooler (inner box) for forming a freezer compartment, which serves as a storage room; and a plastic insulating frame 20 at the front of the box-shaped cooler 19. is installed.

After injecting the thermofusible resin 17 as described above, the inner box 18 and the box-shaped cooler 19 are installed inside the outer box 1.

The attachment of the inner box 18 and the box-shaped cooler 19 to the outer box 1 is as follows:
The flange portion 18a extending to the outside of the front surface of the inner box 18 and the flange portion 20a extending to the outside of the front surface of the insulating frame 20 of the box-shaped cooler 19 are connected to the respective holding plate portions 7 to 11, 1.
This is done by inserting it into each of the U-shaped grooves 21 No. 3, 14, and 15.

After the inner box 18 and the box-shaped cooler 19 are installed in the outer box 1 in this way, the same heat-melting resin 22 as described above is heated and melted, and this is applied to the periphery of the front opening of the outer box 1, that is, the flange. The hot-melt resin 22 is injected into the corner portions A to F of the back side of the partition frame 6 (the injection points are indicated by diagonal lines upward to the left in FIG. 2 for convenience). The portions corresponding to the corner portions A to F are embedded and fixed.

After that, the bottom and back of the outer box 1 are covered with a bottom plate and a back plate (not shown), and the outer box 1, the inner box 18, and the box-shaped cooler 1 are assembled.
9 is filled with foam heat insulating material (not shown).

In this way, according to this embodiment, the condenser pipe 16
is entirely covered by the hot melt resins 17 and 22, so even if water droplets enter through the gaps between the outer box 1, the inner box 18, and the insulating frame 20 of the box cooler 19, they will not enter the condenser pipe 16. It is possible to reliably seal the condenser pipe 16 against water droplets, thereby preventing corrosion of the condenser pipe 16 and leakage of refrigerant gas due to this corrosion.

In addition, since the thermofusible resin 22 is injected into the corner portions A to F after the inner box 18 and the box-shaped cooler 19 are installed in the outer box 1, the inner box 18 and the box-shaped cooler 19 are 19
There is no problem such as the inability to attach the device.

That is, if the thermofusible resin 22 is injected into the corner portions A to F before the inner box 18 and the box-shaped cooler 19 are installed,
By cutting and forming the claw pieces 12, each of the holding plate parts 7 to 11,
The hot melt resin 22 is released from the holes 23 formed in the holes 13, 14, and 15.
leaks out and fills each U-shaped groove 21.

When this happens, the flange portion 18 of the inner box 18
a and the flange portion 20a of the insulating plate 20 of the box cooler 19
However, according to this embodiment, such a problem does not occur at all.

As explained above, the present invention provides an anti-dew heater to be installed around the front opening of the outer box, and then a hot melt resin is injected into the front opening of the outer box except for a part of the corner. Then, a part of the dew-proof heater is buried and fixed in the hot-melt resin, and then an inner box for forming a storage chamber is installed inside the outer box, and then a part of the corner of the opening periphery of the outer box is installed. The remaining part of the dew-proof heater is buried and fixed in the hot-melt resin by injecting a hot-melt resin into the heater. This makes it possible to reliably protect the anti-condensation heater from moisture that enters into the outer box, and also prevents the injection of hot-melt resin into a corner of the opening of the outer box. Since this is a configuration that is performed after the inner box is installed inside the outer box, even if a claw piece for temporary fixing of the anti-dew heater is cut and raised at a corner of the front opening periphery of the outer box, the claw piece will not be removed. It is possible to eliminate the inconvenience that the inner box cannot be attached due to the hot melt resin leaking from the hole created by cutting and raising, which is extremely rational.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a perspective view of the front part of the outer box seen from the rear of the outer box with the condenser pipe installed, and Fig. 2 shows the inner box and the box-shaped cooler. Figure 3 is a view of the outer box seen from the back with it attached.
FIG. 4 is an enlarged longitudinal sectional view taken along the line, and FIG. 4 is an enlarged perspective view of the claw portion. In the drawing, 1 is an outer box, 7 to 11.13, 14.15 are holding plates, 16 is a condenser pipe (anti-dew heater), 1
7 and 22 are thermofusible resins, 18 is an inner box, 19 is a box-shaped cooler (inner box), and 21 is a U-shaped groove.

Claims (1)

[Claims] 1 After installing the anti-condensation heater around the front opening of the outer box,
A hot melt resin is injected into the front opening periphery of the outer box except for a part of the corner, a part of the dew-proof heater is buried and fixed in the hot melt resin, and then the outer box is closed. An inner box for forming a storage chamber is installed inside the outer box, and then a hot melt resin is injected into a part of the corner of the opening periphery of the outer box, and the remaining part of the anti-condensation heater is buried in the hot melt resin. How to install an anti-condensation heater for a refrigerator that is fixed.