JPH065587Y2 - Cooling unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an air-cooling type cooling unit installed on a ceiling wall of a refrigerator or the like.

Conventional Technology While demand for air-cooled cooling units has increased in recent years,
In terms of service, there is a demand for a structure that requires less labor. An example of a conventional cooling unit will be described below with reference to the drawings. FIG. 3 is a perspective view of a conventional cooling unit, and FIG. 4 is a view A of the conventional cooling unit.
It is a cross-sectional view of the -A 'paper.

In FIGS. 3 and 4, 1 is a fan panel which is a top plate 1a.
The front plate 1b and the rear plate 1c are formed in a box shape. Reference numeral 2 denotes a side panel of the fan panel 1, which includes a left plate 2a and a right plate 2b. A drain pan 3 is located on the bottom surface of the fan panel 1. Reference numeral 4 denotes a fin-and-tube type evaporator, which is composed of piping 4a and fins 4b, and is fastened together with fan panels 1b and 1c together with a hanger bar 10 described later. 5 is a motor mount, which is a fan panel 1b
Is attached to. 6 is a fan motor, which is attached to the motor mount 5. A fan 7 is attached to the fan motor 6. Reference numeral 8 denotes a fan orifice, which is integrally formed with the front plate 1b of the fan panel 1. 9
Is a drain port and is attached to the lowest position of the drain pan 3 at approximately the center in the front, rear, left, and right of the drain pan 3, with an inclination from the front, rear, left, and right. Further, 10 is a substantially L-shaped hanger bar having a circular hole 10a formed in its horizontal portion. The hanger bar 10 is attached to each of the front left and right sides, and one on the rear side left and right, and a total of four hanger bars 10 are attached to the front and rear sides in opposite directions. An electric heater 11 is attached to the evaporator 4.

A drain pipe 11 shown by dotted lines in FIGS. 3 and 4 is attached to the drain port 9 after the cooling unit is attached to the top wall of the refrigerator.

The operation of the cooling unit configured as above will be described below. First, at the time of cooling, the refrigerant flows through the pipe 4a of the evaporator 4 and the fan motor 6
By this operation, the fan 7 rotates, and the air passes through the gap between the pipe 4a and the fin 4b of the evaporator 4, passes through the fan orifice 8, and is discharged into the refrigerator. When the air passes through the evaporator 4, the refrigerant liquid in the pipe 4a evaporates, and the latent heat of distillation thereof causes the pipe 4a and the fins 4 to move.
As a result of b being cooled and the air passing therethrough being cooled,
The inside of the refrigerator is cooled. The evaporation temperature of the refrigerant in the pipe 4a is always lower than the air temperature in the refrigerator, and the evaporation temperature is 0.
When the temperature is higher than 0 ° C., the water in the air is condensed to form water drops, and when the evaporation temperature is lower than 0 ° C., the water in the air becomes frost and adheres to the evaporator 4. In the case of water drops, the electric heater 1
As a result of energizing 1, the frost melts into water droplets, which in any case drip onto the drain pan 3 and flow along the slope toward the center of the drain pan, collecting in the lowest drain port 9. , It passes through the drain pipe 12 and is discharged into the refrigerator. When the defrosting ends, the above-described cooling operation is restarted, the inside of the refrigerator is cooled, and thereafter cooling and defrosting are alternately repeated to cool the inside of the refrigerator.

Problems to be Solved by the Invention However, in the above-mentioned energization in defrosting, the electric heater suffers from material deterioration due to repeated contraction during cooling, expansion during heating, and moisture or environmental factors, and the electric heater 11 is serviced. Therefore, it is necessary to replace it. In this case, in the conventional structure, first remove the drain pipe 12,
After that, the drain pan 3 is attached to the fan panel 1 and the evaporator 4
By removing the bolts and nuts that are fixed to, removing the drain pan 3, replacing the defective electric heater 11 attached to the evaporator 4, installing the drain pan, and finally installing the drain pipe in five steps. Had to complete the service. Also, due to long-term operation,
Dust, dust, etc. in the air accumulate as water stains on the drain pan, so even when removing and cleaning it
It was necessary to remove the drain pan 3 by an operation substantially similar to the above.

Also in terms of manufacturing, in manufacturing the drain pan 3, it is necessary to process the drain port 9 so that it is inclined in the same plane in the front, rear, left, and right directions, which requires cost improvement. Drain pipe 12
Also in mounting, since the position of the drain port 9 is located in front of the cooling unit, the drain pipe 12 protrudes into the inside of the refrigerator, resulting in a reduction in the effective internal volume of the refrigerator, resulting in a structural problem. Met.

In view of the above problems, the present invention provides a structure for facilitating the replacement of internal parts such as an electric heater at the time of service, cleaning the drain pan, increasing the effective internal volume, and reducing the manufacturing cost. is there.

Means for Solving the Problems In order to solve the above problems, the present invention divides the drain pan into two parts, the rear drain pan is tilted to the left and right, and the drain port is provided on the descending tilt side. The front drain pan is inclined and the front drain pan is projected above the rear drain pan, and the front drain pan and the rear drain pan are joined by a hinge.

The present invention has the above-described configuration, and when the electric heater is replaced at the time of servicing, it can be opened through the hinge by removing the fixed front drain pan, so that workability is improved.

Embodiment A cooling unit according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a cooling unit according to the present invention. FIG. 2 is a sectional view taken along line BB 'of the cooling unit according to the present invention. 1 and 2, the description of the same configuration as the conventional example will be omitted. 13 is a rear drain pan, which is inclined in the left-right direction,
A drain port 9 is formed at the descending slope end. Then, the evaporator 4 is provided on the rear surface, and the side panels 2a, 2b are provided on the side surfaces.
It is fixed to. A front drain pan 14 is inclined forward and backward, and is joined to a rear drain pan by a hinge 15, and is fixed to the fan panel 1b on the front surface and the side panels 2a and 2b on the side surfaces. Further, there is a projecting portion 16 at the rear portion of the front drain pan 14, which is projected to the front portion of the rear drain pan 13.

The cooling operation of the cooling unit configured as described above is the same as that of the conventional one, and thus the description thereof is omitted. Moisture in the air adheres to the evaporator 4 as water drops or frost. In the case of frost, as a result of energizing the electric heater 11 by a timely defrosting operation, the frost melts and turns into water droplets.

Water droplets are dropped on the rear drain pan 13 and the front drain pan 14. The water droplets dripped on the front drain pan 14 flow backward along the front and rear slopes and drip downward from the protruding portion 16, flow into the rear drain pan 13, merge with the water droplets dripped on the rear drain pan 13, and the left and right slopes are inclined. Along the sloping water, it flows in a downward slope and is collected at the drain port 9 and
Is discharged to the outside of the storage.

When defrosting is completed, the cooling operation is resumed as before.
The inside of the refrigerator is cooled.

Next, in the structure in which the drain pan is divided into a front drain pan and a rear drain pan, replacement of the electric heater during service will be described. According to the structure of the present invention, the bolts and nuts fixing the front drain pan 14 to the fan panel 1b and the side panels 2a and 2b are removed, and the drain pan 13 is tilted downward. After that, the defective electric heater 11 mounted on the evaporator 4 is replaced. Then, the front portion of the rear drain pan 14 is lifted up and fixed to the fan panel 1b and the side panels 2a and 2b. The service can be completed in three steps. That is, the replacement of the electric heater, which took 5 steps in the conventional cooling unit, can be reduced to 3 steps, and the drain pan and the drain pipe in the case of the conventional method need not be removed and the troublesome work required for re-installation can be performed. , The service workability can be significantly reduced and the work can be facilitated. Further, according to the present invention, since the drain position can be set at the rear portion of the cooling unit, the protrusion of the drain pipe into the interior by piping can be reduced as compared with the conventional case. Further, according to the structure of the two-piece drain pan of the present invention, a simple structure in which the drain pan is tilted in the front-rear direction or the left-right direction is not a structure in which the drain pan is inclined in the front-rear direction or the left-right direction. The drain pan can be manufactured without using a jig, and the manufacturing cost can be reduced.

Effect of the Invention As described above, in the present invention, the drain pan is divided into two parts, the drain port is provided in the rear drain pan, the front drain pan and the rear drain pan are joined by the hinge, and the front drain pan projects above the rear drain pan. Since the projecting portion is provided, the front drain pan can be rotated around the hinge to move during service, so workability is good. Further, normally, the defrosted water that has fallen to the front drain pan by the protruding portion is reliably guided onto the rear drain pan, so that it does not leak to the surroundings.

[Brief description of drawings]

1 is a perspective view of a cooling unit according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line BB 'in FIG. 1, FIG. 3 is a perspective view of a conventional cooling unit, and FIG. The figure is A of Fig. 3
It is a cross-sectional view taken along the line -A '. 9 ... Drain port, 13 ... Rear drain pan, 14 ... Front drain pan, 15 ... Hinge, 16 ... Projection part.

Claims (1)

[Scope of utility model registration request] 1. A rear drain pan in which a rear part is inclined to the left and right and a downwardly inclined part is provided with a drain port, and a front drain pan in which the front part is inclined forward and backward are arranged, and the front drain pan is mounted on the rear drain pan. A cooling unit that has a protruding portion and has a front drain pan and a rear drain pan joined by a hinge.