JPH04106386A - Evaporator mounting device for refrigerator - Google Patents

Abstract

PURPOSE:To facilitate mounting with a simple structure by a method wherein an evaporator is suspended and supported by an air deflecting plate through a plurality of resin made holders, on which a substantially horse-shoe type holder unit fitted to a heat exchanging tube from the upper part of the same is formed at the lower part while a mounting unit, provided at the upper part of the same, is engaged with and retained to the lower side of the air deflecting plate respectively. CONSTITUTION:When the title mounting device is inserted into a heat exchanging tube 17, a substantially truncated chevron-shape tip end is expanded while the tip end is provided with an elasticity when the same is engaged with the heat exchanging pipe 17 whereby the tip end is contracted to the initial state thereof and grips the heat exchanging pipe 17 rigidly. The resin-made holders 22 are attached to the four corners of an evaporator 7 and are forced into a square hole 21 of a lower flange 20 while holding the pawl 23 of the resin made holder 22, the pawl 23 is hooked by the square hole 21 whereby the holder is attached so as not to be dropped. In this case, the evaporator is fixed to the air deflecting plate 10 by the resin made holders 22 in a shape that the holders 22 are hang from the air deflecting plate 10. Further, the number of the resin made holder 22 is not limited to four pieces and 2-4 pieces can be selected in accordance with necessity. On the other hand, the title device can be constituted of a resin-made holder 22, arranged on one side, while the opposite side can be constituted of a hooking means such as a pawl or the like. Side plates for making the evaporator 7 itself a rigid body becomes unnecessary and the evaporator 7 becomes inexpensive.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a refrigerator having a structure in which a cooling chamber protrudes from the side of the storage room for sucking in air, cooling it, and discharging it into the refrigerator. ,
In particular, the present invention relates to a mounting device for an evaporator installed in a cooling room.

(b) Refrigerators using conventional technology are called undercounter refrigerators.
Its characteristic structure, as disclosed in Japanese Utility Model Publication No. 60-4051, is that a cooling chamber is provided protruding from the side of the storage chamber, and this cooling chamber communicates with the storage chamber through a cold air intake port and a cold air discharge port. This cooling chamber houses an evaporator and a cold air circulation fan.

By the way, in manufacturing and assembling, when the evaporator is attached to the cooling chamber, since the volume of the cooling chamber is small, it is desirable that the number of attachment parts is small and that the evaporator can be easily attached. As an example of such a mounting method, Japanese Utility Model Application Publication No. 52-117674 discloses that rails with holding parts are installed on the inner wall of the cooling chamber, and the tube plate of the evaporator is bent along the rails. A structure is disclosed in which the evaporator is mounted by inserting the flanges on both sides thereof and sandwiching the flanges between the rail and the inner wall.

(c) Problems to be Solved by the Invention However, with the above-mentioned conventional device, it takes time and effort to fasten a pair of rails to the inner wall of the cooling chamber for mounting the evaporator. The structure is complicated, as it is necessary to machine a flange on the plate to be caught on the rail, and the cost is not sufficiently low.

The present invention has been made in view of the above points, and an object of the present invention is to provide an evaporator mounting device that has a simpler structure than conventional devices, is easier to install, and can achieve lower costs. do.

(d) Means for Solving the Problems In order to achieve the above object, the present invention provides a cooling chamber that projects from one side of the storage room and communicates with the inside of the storage room, and a space between the cooling chamber and the storage room. In a refrigerator that houses an evaporator consisting of a large number of arranged plate-like fins and a plurality of heat exchange tubes inserted through the fins, and a blower for circulating cold air, there is a space between the blower and the evaporator. A pair of wind direction plates are arranged opposite to each other, and a portion of a substantially horseshoe-shaped holder that fits into the heat exchange tube from above is formed at the bottom, and a mounting part provided at the top is fitted and engaged with the lower side of the wind direction plates, respectively. The evaporator is made up of a plurality of resin holders that are suspended from the wind direction plate.

(E) Function The resin holder is fitted into the heat exchange tube from above with a part of the horseshoe-shaped holder, and a plurality of resin holders are attached to the evaporator facing each other, and the upper end attachment part of each resin holder is attached to the evaporator. When the evaporator is fitted and locked to the lower side of the wind direction plate, the evaporator is easily suspended and supported at the bottom of the wind direction plate.

(f) Example Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cooling chamber having a structure in which a heat insulating material 2a made of foamed resin such as polyurethane is filled between an outer box 1a and an inner box 1b,
A storage room 3 made of the same heat insulating material 2b as the cooling room 1
It is protruded from one side. The cooling chamber 1 has an opening 4 on one side thereof, and the opening 4 is aligned with the side opening 5 of the storage chamber 3. A sealing member 6 is provided at the boundary thereof, and the opening 4 is fixed by a suitable connecting means. In the embodiment, the cooling chamber 1 and the storage chamber 3 are constructed as separate bodies, but they may be integrally formed. Incidentally, an evaporator 7 is installed in the cooling chamber 1, and an air blower 8 is provided for forced circulation of cold air generated in the cooling chamber 1 to the storage chamber 3. This blower 8 is mounted and supported by a fan casing 9. As shown in FIG. 4, a pair of wind direction plates 10 and 10 are attached to the fan casing 9 by welding or the like so as to close the side opening thereof. This wind direction plate 10.10 functions to improve the heat exchange between the refrigerator air drawn into the cooling chamber 1 by the blower 8 and the evaporator 7.

When the blower 8 rotates, the air in the refrigerator enters the cooling chamber 1 through the suction port 11, is cooled by heat exchange in the evaporator 7, is discharged into the storage chamber 3 through the discharge port 12, and returns to the cooling chamber l. It circulates in a certain direction as if entering. 13a and 13b
is a wall plate provided between the cooling chamber 1 and the storage chamber 3 so as to partition a suction path and a discharge path for these cold air flows. A drain pan 15 is disposed below the evaporator 7 to receive dripping condensate adhering to the inner walls of the evaporator 7 and the cooling chamber 1, and to drain the drain through a drain hose 14. 29 is a capacitor.

By the way, the above-described evaporator 7 is called an independent fin type evaporator, and as shown in FIGS. 1 and 4, it uses a large number of small plate-shaped fins 16.
are arranged in the same direction at predetermined intervals, and after inserting a plurality of heat exchange tubes 17 through the plate-shaped fins 16 in the long side direction of the plate-shaped fins 16, the heat exchange tubes 17 are arranged in a meandering shape. It is assembled by bending it. In this way, the multiple rows of fin groups 16A,
16A is the evaporator 7 in an integrated form. However, in this type of evaporator 7, the plate-like fins 16 in the direction of adjacent rows (the direction between the fin groups 16A) are deformed because they are not provided with side plates (end plates) etc. that support them as a whole in that direction. It is easy to shape and has no fixed shape.

The present invention proposes a mounting structure for the evaporator 7 that is free from such concerns.

To explain the details further, square holes 21, 21 are formed in the outward horizontal lower surface flanges 2o, 20 provided at the lower end of the wind direction FilO, 10 at the front and rear positions, respectively. On the other hand, this square hole 21. ．． Fitted into 21,
Four resin holders 22, 22, etc. are provided for suspending and supporting the evaporator 7 on the wind direction plate 10, 10.

This resin holder 22 has claw parts 23, 23 on the upper part, and a groove part is formed between it and the flat mounting part 24 below these claw parts 23, 23, to the extent that the lower flange 20 of the wind direction plate 10 can be inserted therein. At the same time, in the lower part of the mounting part 24, there is a substantially horseshoe-shaped holder part 28 having a substantially V-shaped part with a diverging tip.
are integrally formed. And each resin holder 22
is attached to the evaporator 7, which is connected to the upper heat exchange tube 17.17 that passes through the outermost fin group 16A.
It is fitted onto both ends of the holder from above.

That is, when it is inserted into the heat exchange tube 17, the approximately V-shaped portion at the tip expands, and when it fits into the heat exchange tube 17, it has elasticity, so the tip contracts and returns to its original state, gripping the heat exchange tube 17 firmly. . After attaching the resin holder 22 to the four corners of the evaporator 7 in this manner, when the claw portion 23 of the resin holder 22 is press-fitted into the square hole 21 of the lower flange 20, the claw portion 23 is inserted as shown in FIG. It is installed so that it does not get caught in the square hole 21 and fall. That is, the evaporator 7 is suspended and fixed to the wind direction plate 10 using a resin holder 22. Note that the number of resin holders 22 is not limited to four, and may be selected as necessary, such as from two to four or more.

Alternatively, the resin holder 22 may be disposed on one side, and the opposite end may be configured with hooking means such as a claw portion.

This eliminates the need for a side plate to make the evaporator 7 itself a rigid body, making the evaporator 7 inexpensive.

With the above structure, four resin holders 22 can be easily attached to the evaporator 7 by simply fitting them into the heat exchange tubes 17 from above using the elastic force of the resin holders 22. Then, by simply inserting it through the side opening 5 of the storage chamber 3 and press-fitting the claw part 23 of the resin holder 22 into the square hole 21 on the side of the wind direction plate 10, the claw part 23 will catch screws, screws, etc. The evaporator 7 can be easily installed in the cooling chamber 1 by suspending and supporting it from the wind direction plate 10 without using any attachment parts.

(G) Effects of the Invention As described above, according to the present invention, a plurality of resin holders are used, and a portion of the approximately horseshoe-shaped holder is fitted from above to the heat exchange tube of the evaporator, and each of the holders is By fitting and locking the upper end mounting part to the lower sides of a pair of opposing wind direction plates from below, the evaporator can be suspended and supported from the wind direction plates, which simplifies the installation process and improves assembly efficiency and costs. Down is planned.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of the main part showing the evaporator mounting device of the present invention,
2 is a sectional view taken along the line AA' in FIG. 1, FIG. 3 is a sectional view taken along the line BB' in FIG. 2, and FIG. 4 is an exploded perspective view of each component constituting the evaporator mounting device. 1...Cooling room, 7...Evaporator, 8...Blower, 10
．． 10. Wind direction board, 16. 16.. Plate fin, 17..
・Heat exchange tube, 20.20... Bottom flange, 21...
Square hole, 22...Resin holder 28...Part of the holder. Figure 1

Claims (1)

[Claims] (1) A cooling chamber protruding from one side of the storage room that communicates with the inside of the storage room, and this cooling chamber has a large number of plate-shaped fins arranged at intervals and a plurality of heat sinks inserted through these. In a refrigerator that houses an evaporator consisting of an exchange pipe and a blower for circulating cold air,
A pair of wind direction plates are disposed opposite to each other between the blower and the evaporator, and a substantially horseshoe-shaped holder portion that fits into the heat exchange tube from above is formed at the lower part, and a mounting portion provided above is connected to the heat exchange tube. An evaporator installation for a refrigerator comprising a plurality of resin holders that are respectively fitted and locked to the lower side of the wind direction plate, and the evaporator is suspended and supported from the wind direction plate by the resin holders. Device.