JPH0457948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a cooling device for cooling the inside of a refrigerator.

(b) Conventional technology The refrigeration system disclosed in Japanese Patent Publication No. 58-51181 (F25D19/02) has a plate fin type cooler inside the case,
There is shown an axial blower with a propeller provided at the back suction port of the case, and a cooling unit with a dew pan forming the bottom surface of the case.

(C) Problems to be Solved by the Invention In the above-mentioned prior art, the cooler and the dew pan are fixed to the case with fasteners such as screws, so the installation work is time-consuming and the case is difficult to install. Since a gap is formed between the left and right walls of the case and the left and right tube plates of the cooler, a portion of the cold air passing through the case passes through the gap, and as a result, the cold air towards the cooler is A problem arose in that heat exchange deteriorated.

(d) Means for Solving the Problems In order to solve the above problems, the present invention includes a pair of left and right wind direction pieces 25 in the case 2 for guiding the cold air heat exchanged by the cooler 7 to the supply path 3; A pair of left and right hanging pieces 29 adjacent to the lower ends of both air direction pieces, on which the outward flanges 30A at the upper ends of both the left and right tube plates 30 of the cooler are placed, and hang the cooler 7; A pair of left and right overhang pieces 38 on which the left and right ends of the back surface are placed;
This cooling device is integrally formed with a pair of left and right elastic press pieces 39 that press both left and right ends of the upper surface of the dew pan.

(e) Operation By placing the outward flanges 30A of both the left and right tube plates 30 on the hanging pieces 29, the cooler 7 is mounted on the case 2.
By inserting both left and right ends of the dew pan 9 between the overhanging piece 38 and the elastic holding piece 39, the dew pan 9 can be placed inside the case 2. Both left and right tube plates 3 due to the suspension of
0 and both the left and right wind direction pieces 25 are connected, and all of the cold air that has entered the case 2 can be heat exchanged with the cooler 7.

(f) Examples Embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a cooling device called a cooling unit, which is disposed in an interior C of a refrigerator A equipped with a heat insulating door B, and is used to cool the interior of the refrigerator. This cooling device consists of a resin case 2 that has openings at two places on the front and the back, and a resin case that covers each opening on the front of the case, that is, a circular supply path 3 through which the supplied cold air passes, and a rectangular return path 4 through which the return cold air passes. The outer periphery is composed of a front cover 5 made of aluminum and a rear cover 6 made of aluminum that covers the opening on the back. Storage is arranged. As shown in FIGS. 3 and 4, the front cover has a horizontally long cold air outlet 10 facing the supply path 3 at the top, a horizontally long cold air suction port 11 facing the bottom of the return path 4 at the bottom, and this suction port. A circular window 12 facing the cooler 7 is formed above, and a frame 13 surrounding this window and facing the cooler 7 is formed. A square inspection cap 14 is fitted inside the frame 13, and a rectangular heat insulating plate 1 is fitted inside the frame 13.
5. The metal plates 16 are overlapped and fitted into each other. Windows 18 and 19 communicating with the window 12 are also formed in both the heat insulating plate and the metal plate. Further, as shown in FIG. 1, the back cover has an opening 20 through which the motor 8B of the blower 8 extends rearward, and a cooler 7.
A through hole 22 is formed for passing a pipe 21 extending from the condensing unit to a condensing unit (not shown). , covering the back opening of this case.

The case is molded by injection molding a resin such as vinyl chloride, and has a front wall 2A and upper, lower, left, and right sides.
It consists of walls B to 2E. 25 is a pair of left and right wind direction pieces formed astride the front wall 2A and the upper wall 2B, respectively, extending backward from the front and upper walls and spaced apart from each other, and extending in the direction of the left wall 2D or the right wall 2E; It consists of a vertical part 25A formed with an elastic holding piece 26 for holding an overheating preventer, which will be described later, and an inclined part 25B that slopes toward the left or right wall, and which carries the cold air heat-exchanged by the cooler 7. The guide converges toward the supply path 3. Reference numeral 27 denotes a pair of left and right boss portions formed on the back side edge of the supply path 3, and a blower 8 is installed in the boss portions.
A U-shaped support plate 28 is attached with fasteners (not shown) such as screws. With this installation, the propeller 8A of the blower 8 is installed in the supply path 3. Reference numeral 29 denotes a pair of left and right hanging pieces that are formed on the upper part of the rear surface of the front wall 2A and extend rearward, and each wind direction piece 25
It is located between the lower end of the left wall 2D or the right wall 2E, and there is a gap between each of the wind direction pieces. Both left and right tube plates 30 of the cooler 7 are attached to these hanging pieces.
The outward facing flange 30A is placed thereon, and the cooler 7 is suspended within the case 2 as a result of this placement. Reference numeral 31 denotes a movement blocking piece with a groove 31A formed in the lower part of the rear surface of the front wall 2A and extending rearward, which is located directly below each of the hanging pieces, and prevents the lower parts of both tube sheets from fitting into the groove 31A when the cooler 7 is suspended. By fitting the cooler 7
Prevents the from swinging from side to side. Each of these movement blocking pieces is formed with a glove 33 that holds a temperature control sensor 32 that controls the supply of refrigerant to the cooler 7. The cooler is provided with a serpentine electric heater 34 that is energized during defrosting, and a defrost return sensor 36 that is sandwiched between the fittings 35. sensor 3
This is done in conjunction with the operation of the sensor 6, and in the event of a failure of this sensor, the overheating preventer 37 is used. Reference numeral 38 denotes a pair of left and right projecting pieces formed on the lower inner surfaces of the left and right walls 2D, 2E, and supports the left and right ends of the back surface of the dew pan 9. Reference numeral 39 denotes a pair of left and right elastic retaining pieces 3 formed at a distance above the overhanging piece.
At step 9, press both left and right ends of the upper surface of the dew pan. That is, the dew pan 9 is inserted between the projecting piece 38 and the elastic stopper piece 39, and is supported by being pressed by the elastic stopper piece. Reference numeral 40 denotes a heat-generating plate attached to the back surface of the dew pan, which is composed of an aluminum foil 40A and a cord heater 40B. 41 is both left and right walls 2D, 2E
A metal mounting plate that also serves as a pair of left and right reinforcing members that is fixed to the back side of the wall part 4 with fasteners such as screws.
1A and a cover side portion 41B, it increases the mechanical strength of both the left and right walls 2D, 2E and prevents deflection in the longitudinal direction,
The rear cover 6 is attached to this mounting plate using fasteners such as screws. This prevents the cooler 7 and the dew pan 9 from moving rearward when the rear cover is attached. Reference numeral 42 denotes a pair of L-shaped left and right metal spacers, which indirectly fix the lower part of the rear cover 6 to the front wall 2A. Reference numeral 43 denotes a number of reinforcing ribs formed at appropriate locations on the back surface of the case.

According to such a configuration, the case 2 includes the hanging piece 29,
Since the pair of overhanging pieces 38 and elastic holding pieces 39 are integrally formed, the length is such that the outward flanges 30A of both the left and right tube plates 30 are placed on the left and right hanging pieces 29, and the cooler 7 can be mounted on the left and right hanging pieces 29. It can be suspended by its own weight, and by inserting both left and right ends of the dew pan 9 between the overhanging piece 38 and the elastic retaining piece 39, the dew pan 9 can be suspended by the elasticity of the elastic retaining piece 39. As a result, the cooler 7 and the dew pan 9 can be easily installed into the case 2 without using fasteners such as screws. Furthermore, as the cooler 7 is suspended, the lower ends of the pair of left and right wind direction pieces 25 integrally formed on the case 2 are connected to the upper ends of both the left and right tube plates 30, so that the cold air passing through the inside of the case 2 is connected. can all be exchanged with the cooler 7, and as a result, the heat exchange of the cooler 7 can be improved.

(g) Effects of the invention The present invention described above has the following effects.

The cooler can be suspended in the case with a length that allows the outward flanges of both the left and right tube plates to be placed on the hanging piece, and the left and right ends of the condensation tray are placed between the overhanging piece and the elastic holding piece. The dew pan can be fixed in the case at the insertion length, and as a result, the cooler and the dew pan can be installed in the case without using any fasteners, allowing quick installation work.

As the cooler is hung, both the left and right tube plates and the left and right wind direction pieces are connected adjacent to each other, so all the cold air passing through the case can be heat exchanged with the cooler, and as a result, The heat exchange of the cooler can be improved.

[Brief explanation of drawings]

The drawings all show embodiments of the cooling device of the present invention,
Figure 1 is an exploded rear perspective view, Figure 2 is a rear perspective view with the back cover removed, Figure 3 is a front exploded perspective view with the front cover removed, and Figure 4 is an exploded rear perspective view of the front cover. , FIG. 5 is a front perspective view of a refrigerator equipped with a cooling device. 2...Case, 2A...Front wall, 2B...Top wall, 2C...
Lower wall, 2D...left wall, 2E...right wall, 3...supply path, 4
...Return path, 5...Front cover, 6...Back cover, 7
...Cooler, 8...Blower, 9...Dew tray, 25...Wind direction piece, 29...Hanging piece, 30...Tube plate, 30A...Outward flange, 38...Overhanging piece, 39...Elastic holding piece.

Claims (1)

[Claims] 1. A resin case with an opening on the back, consisting of a supply path with the propeller of the blower installed in the upper part of the front, a front wall with a return path below the supply path, and walls on the top, bottom, left, and right sides, and a back surface that covers the back opening of this case. a cover, and the blower disposed in the upper part of the case;
It consists of a plate fin type cooler disposed in the center and parts such as a dew pan disposed in the lower part, and a pair of left and right wind direction pieces that guide the cold air heat exchanged by the cooler to the supply path in the case; A pair of left and right hanging pieces are adjacent to the lower ends of both airflow direction pieces, on which the outward flanges of the upper ends of the left and right tube plates of the cooler are placed, and the left and right ends of the back side of the dew pan are placed on the left and right ends of the back side of the dew pan. A cooling device integrally formed with a pair of left and right overhanging pieces that are placed on the left and right sides, and a pair of left and right elastic holding pieces that hold down both left and right ends of the upper surface of the dew pan.