JPH0794945B2 - Evaporator mounting device for refrigerator - Google Patents

Description

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

(B) Conventional technology Such a refrigerator is called an under counter refrigerator.
As its characteristic structure, as disclosed in Japanese Utility Model Publication No. 60-4051, a cooling chamber is projected from the side of the storage chamber, and the cooling chamber communicates with the storage chamber through a cold air intake port and a cold air discharge port. Let
The evaporator and the cool air circulation fan are housed in this cooling chamber.

By the way, in manufacturing and assembling, when the evaporator is attached to the cooling chamber, the volume of the cooling chamber is small, and therefore it is desirable that the number of attachment parts be small and the evaporator be easily attached. As an example of such a mounting method, in Japanese Utility Model Publication No. 52-117674,
On the inner wall of the cooling chamber, install a rail with a holding part oppositely, insert the flanges on both sides of the tube plate of the evaporator bent along this rail, and sandwich the flange between the rail and the inner wall. A structure in which an evaporator is attached is disclosed.

(C) Problem to be Solved by the Invention However, in the above-mentioned conventional device, it is necessary to screw a pair of rails for mounting the evaporator to the inner wall of the cooling chamber, and the evaporator has its tube plate. The structure is complicated, for example, the flange hooked on the rail must be processed, and the cost is not sufficiently low.

The present invention has been made in view of the above points, and an object thereof is to provide a mounting device for an evaporator, which has a much simpler structure than conventional devices, is easy to install, and can achieve low cost. To do.

(D) Means for Solving the Problem In order to achieve the above object, the present invention has a cooling chamber projecting from one side of the storage chamber, the cooling chamber communicating with the inside of the storage chamber. In a refrigerator containing an evaporator comprising a number of arranged plate fins and a plurality of heat exchange tubes inserted therethrough and a blower for cold air circulation, between the blower and the evaporator A pair of air flow direction plates arranged opposite to each other and a holder part fitted to the heat exchange tube are formed in the lower part, and a mounting part provided above is made of a plurality of resin members fitted and locked to the lower sides of the wind direction plates. In this resin holder, the evaporator is suspended and supported on the wind direction plate.

(E) Action A resin holder is fitted into the heat exchange tube with its holder, and a plurality of resin holders are attached to the evaporator so that they face each other. The upper end mounting portion of each resin holder is fitted to the lower side of the wind direction plate. When locked together, the evaporator is easily suspended and supported under the wind vane.

(F) Example An example of the present invention will be described below with reference to the accompanying drawings.

Reference numeral 1 denotes 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, and a storage room having the same heat insulating material 2b as the cooling chamber 1. 3 is provided on one side. The cooling chamber 1 has an opening 4 on one side surface thereof, the opening 4 is aligned with the side opening 5 of the storage chamber 3, and a seal member 6 is provided at the boundary between the cooling chamber 1 and the cooling chamber 1. In the embodiment, the cooling chamber 1 and the storage chamber 3 are separate components, but they may be integrally formed. By the way, an evaporator 7 is mounted in the cooling chamber 1, and a blower 8 for forcibly circulating the cold airflow generated in the cooling chamber 1 to the storage chamber 3 is provided. The blower 8 is mounted and supported by the fan casing 9. Then, as shown in FIG. 4, a pair of wind direction plates 10, 10 are attached to the fan casing 9 by welding or the like so as to close the side opening. The wind direction plates 10 and 10 have a function of favorably exchanging heat with the evaporator 7 for the air inside the chamber sucked into the cooling chamber 1 by the blower 8. When the blower 8 is rotated, the air in the refrigerator is sucked in 11
It enters into the cooling chamber 1 via, is cooled by heat exchange in the evaporator 7, is discharged from the discharge port 12 into the storage chamber 3 and enters the cooling chamber 1 again, and circulates in a certain direction. 13a and 1
A wall plate 3b is provided between the cooling chamber 1 and the storage chamber 3 so as to partition the suction passage and the discharge passage of the cold airflow. A drain pan 15 is disposed below the evaporator 7 to receive the drain attached to the inner walls of the evaporator 7 and the cooling chamber 1 and dripping the drain 7 by a drain hose 14. 29 is a capacitor.

By the way, the evaporator 7 described above is called an independent fin type evaporator, and as shown in FIGS. 1 and 4, a large number of small plate-shaped fins 16, 16 ... Are arranged in the same direction with a predetermined interval, and these plate fins
A plurality of heat exchange tubes 17 ... Are inserted into the plate fin 16 in the long side direction of the plate fin 16, and then the heat exchange tubes 17 are bent in a meandering shape to be assembled. Thus, a plurality of rows of fin groups 16A, 16A are assembled to form the evaporator 7. However, in this type of evaporator 7, the plate-like fins 16 in the adjacent row direction (direction of the fin groups 16A) are not provided with side plates (end plates) or the like for supporting them in that direction as a whole. It is easy to do and the shape is not fixed.

The present invention proposes a mounting structure for the evaporator 7 which does not have such a concern.

More specifically, the square holes 21 and 21 are formed at the front and rear positions of the outward horizontal lower flanges 20 and 20 provided at the lower ends of the wind direction plates 10 and 10, respectively. on the other hand,
Four resin holders 2 fitted into the square holes 21 and 21 for suspending and supporting the evaporator 7 on the wind direction plates 10 and 10.
Provide 2,22 ... This resin holder 22 has a claw 2
3 and 23, and a groove portion for inserting the lower surface flange 20 of the wind direction plate 10 is formed between the claw portions 23, 23 and the flat mounting portion 24 below the claw portions 23, 23, and at the lower portion of the mounting portion 24. Has integrally formed a substantially horseshoe-shaped holder portion 28 having a generally C-shaped portion having a divergent tip. Each of the resin holders 22 is attached to the evaporator 7. The resin holders 22 are fitted and attached from above to both ends of the upper heat exchange tubes 17, 17 penetrating the outermost fin group 16A. .

That is, when inserted into the heat exchange tube 17, the substantially square-shaped portion of the tip expands, and when fitted into the heat exchange tube 17, it has elasticity so that the tip contracts and returns to the original state, and the heat exchange tube 17 is firmly gripped. . In this way, this resin holder is attached to the four corners of the evaporator 7.
After attaching 22, the claw portion 23 of the resin holder 22 is press-fitted into the square hole 21 of the lower surface flange 20, and the claw portion 23 is attached so as not to be caught in the square hole 21 and fall as shown in FIG. That is, the evaporator 7 is the resin holder 22 and the wind direction plate 10
It is fixed in the form of being suspended. The number of the resin holders 22 is not limited to four, and may be selected as necessary such as two or four or more. Further, the resin holder 22 may be arranged on one side and the other end side may be constituted by a hooking means such as a claw portion.

As a result, the side plate for making the evaporator 7 itself a rigid body is not required, and the evaporator 7 is inexpensive.

With the above configuration, the resin holder 22 is a heat exchange tube.
It is possible to easily attach four of them to the evaporator 7 by simply fitting them into the top 17 from above by the elastic force of the resin holder 22. Then, it is inserted through the side opening 5 of the storage chamber 3 and the claw portion 23 of the resin holder 22 is simply press-fitted into the square hole 21 on the side of the wind direction plate 10, and when the claw portion 23 is caught, screws, screws, etc. It is possible to easily mount the evaporator 7 in the cooling chamber 1 by suspending and supporting the evaporator 7 on the wind direction plate 10 without using the mounting parts.

(G) Effect of the Invention As described above, according to the present invention, a plurality of resin holders are used, the holder portions are fitted to the heat exchange tubes of the evaporator, and the pair of mounting portions at the upper ends of the holders face each other. By fitting and locking the lower side of the airflow direction plate from below, the evaporator can be suspended and supported on the airflow direction plate, resulting in a simple attachment work, and improvement in assemblability and cost reduction.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an evaporator mounting device of the present invention,
2 is a sectional view taken along the line AA 'in FIG. 1, and FIG.
FIG. 4 is a cross-sectional view taken along the line BB 'in FIG. 4, and FIG. 4 is an exploded perspective view of each component constituting the evaporator mounting device. 1 ... Cooling chamber, 7 ... Evaporator, 8 ... Blower, 10, 10 ...
… Wind vanes, 16,16 …… Plate fins, 17 …… Heat exchange tubes, 20,
20 …… bottom flange, 21 …… square hole, 22 …… resin holder, 28 …… holder part.

Claims (1)

[Claims] 1. A cooling chamber communicating with the inside of the chamber is provided on one side of the chamber, and a large number of plate-shaped fins arranged at intervals and a plurality of fins inserted through the fin are arranged in the cooling chamber. In a refrigerator accommodating an evaporator consisting of a heat exchange tube and a blower for circulating cold air, a pair of wind vanes facing each other between the blower and the evaporator, and fitted to the heat exchange tube. The holder part is formed in the lower part, and the mounting part provided in the upper part is composed of a plurality of resin holders fitted and locked to the lower side of the wind direction plate, respectively. An evaporator mounting device for a refrigerator, characterized in that the plate is suspended and supported.