JPH06249567A - Cooling device - Google Patents

Abstract

PURPOSE:To provide a cooling device in which its mounting characteristic and its function can be improved by improving a shape of a drain pan, and a superior service characteristic is exhibited at the time of replacing a drain heater. CONSTITUTION:There are provided a cooler 5 installed within a case 1 and having a defrosting heater 6a for cooling air in a refrigerator; a drain pan 2 arranged below the cooler 5 and having a drain heater for discharging drain water dropped from the cooler 5 out of the case 1 through a drain water discharging pipe 8 inclined downwardly and arranged at a side edge of this inclined side; and a fan motor 3 arranged at the case 1 through a motor fixing plate 3a. This cooling device is constructed such that each of pitches 10a and 10b of holes for fixing the drain pan 2 is symmetrically unified from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling unit provided on a ceiling wall of a prefabricated refrigerator or the like.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand from the market for a cooling unit provided on the ceiling wall of a prefabricated refrigerator or the like. For example, as a conventional cooling unit, Japanese Patent Laid-Open No. 3-177774 is known. The structure of the gazette was general.

The conventional cooling unit described above will be described below with reference to the drawings. FIG. 6 is a perspective view of a conventional cooling unit, FIG. 7 is a vertical sectional view of the conventional cooling unit, and FIG. 8 is an enlarged perspective view of a drain pan of the conventional cooling unit. In FIGS. 6, 7, and 8, the drain pan 2 is fixed to the lower surface of the case 1. The fan motor-3 is fixed to the case 1 via the fan motor fixing plate 3a, and the blades 4 are fixed to the shaft of the fan motor-3. A cooler 5 is attached to the inner surface of the case 1,
The pipe 6 and the defrosting heater 6 a are installed in the cooler 5.

A drain heater 6b is held by the other end bent portion 7a of the drain heater holding plate 7 having one end spot-welded to the drain pan 2. The drain water discharge pipe 8 is welded to the drain pan 2. The drain hose 9 is attached to the drain water discharge pipe 8. The fan heater 6c is mounted outside the case 1 and near the blades 4.

The operation of the cooling unit configured as described above will be described below.

When the cooling unit is operated, a fan motor
The blade 4 fixed to the shaft of 3 rotates, and air flows in the direction of the arrow. When the air passes through the cooler 5, the refrigerant flowing through the pipe 6 evaporates and the latent heat of vaporization cools the air.

As the cooling progresses, the water vapor contained in the air becomes frost and condenses on the surface of the cooler 5. As frost accumulates, the amount of air passing through the cooler 5 gradually decreases,
Since the heat exchange between the refrigerant and air also decreases accordingly,
Cooling capacity is decreasing.

In order to cancel this, after cooling for a certain period of time, the supply of the refrigerant to the pipe 6 of the cooler 5 is cut off by the operation of a defrosting timer (not shown) or the like, and at the same time, the fan motor.
The rotation of 3 is stopped, and the air does not pass through the cooler 5.

Next, a defrosting heater 6a and a drain heater
6b, fan heater 6c, etc. are energized to start defrosting.
The frost accumulated by the heat generated by the defrosting heater 6a and the like becomes melted water and is discharged to the outside of the refrigerator through the drain hose 9 by the drain pan 2 inclined toward the drain water discharge pipe 8.

The end of defrosting is usually detected by a thermostat (not shown) for detecting the end of defrosting provided in the cooler 5 or the like. When the defrosting ends, the operation of the cooler that has been completed is restarted, and the cooling and the defrosting are repeated at a constant cycle set by the defrosting timer.

[0011]

However, in the prior art as described above, the drain water discharge pipe of the drain pan 2 fixed to the case 1 may be installed depending on the conditions when the cooling unit is installed in the prefabricated refrigerator. The position of 8 is located in the central portion of the inside of the refrigerator, and unless the drain hose 9 is lengthened, the drain water cannot be discharged to the outside of the refrigerator, which causes a problem that the dead space in the refrigerator is increased.

Further, in order to directly transmit the heat generated by the drain heater 6b to the drain pan 2, the drain heater 6b is held by the other end bent portion 7a via the drain heater holding plate 7. When replacing the drain heater 6b, the other end bent portion 7a had to be returned to the base, which was troublesome.

Further, during the defrosting operation, all the water melted down from the cooler 5 by the defrosting heater 6a falls to the drain pan 2 without being thawed. At this time, the drain heater 2 is placed in the drain heater 2. Since the heat of the drain heater 6b held by the holding plate 7 is not efficiently transmitted to the drain pan 2 by the drain heater holding plate 7, there is a problem that ice remains on the drain pan 2.

In view of the above problems, it is an object of the present invention to improve the shape of the drain pan and to provide a cooling unit which is easy to install and has good serviceability when the drain heater is replaced.

[0015]

In order to solve the above-mentioned problems, a cooling unit of the present invention is provided in a case and is provided with a defrosting heater for cooling the air in the refrigerator. And the drain water that is disposed below the cooler and drops from the cooler is drained to the outside of the case by a drain water discharge pipe that has a downward slope and is provided at the side edge of the slope. A drain pan equipped with a drain heater and a mower for the case.
And a fan motor provided via a motor fixing plate, and the fixing hole pitches of the drain pan are symmetrically unified so that either of them can be arranged in the case.

In order to solve the above-mentioned problems, the cooling unit of the present invention is provided in a case, and has a defrosting heater for cooling the air in the refrigerator, and a cooling unit. A drain heater that is disposed below the container and drains the drain water that has fallen from the cooler to the outside of the case by a drain water discharge pipe that is inclined downward and is provided at the side edge of the slope. And a fan motor provided on the case through a motor fixing plate. The drain heater of the drain heater provided on the drain pan.
The fixing plate is easily attached and detached.

In order to solve the above-mentioned problems, the cooling unit of the present invention is provided in a case, and has a defrosting heater for cooling the air in the refrigerator, and a cooling unit. A drain heater that is disposed below the container and drains the drain water that has fallen from the cooler to the outside of the case by a drain water discharge pipe that is inclined downward and is provided at the side edge of the slope. And a fan motor provided on the case via a motor fixing plate, and the inner surface of the drain pan is subjected to a hydrophilic treatment. .

[0018]

According to the present invention, even if the conditions for installing the cooling unit in the prefabricated refrigerator are different, the present invention makes it possible to provide the closest position when drain water is discharged outside the refrigerator without lengthening the drain hose. Since the drain pan can be arranged in different directions, the dead space in the refrigerator can be suppressed as much as possible.

Further, according to the present invention, since the drain heater is held in the drain pan by the above-mentioned structure, it can be easily attached and detached when changing the direction of the drain pan or when exchanging the drain heater. Therefore, it has excellent workability and serviceability.

Further, according to the present invention, since the inner surface of the drain pan is hydrophilic due to the above-mentioned structure, the water dropped from the cooler to the drain pan by the defrost heater during the defrosting operation spreads rapidly. It flows toward the inclined side edge of the drain pan, and because the drain heater is directly fixed to the drain pan, the heat of the drain heater is efficiently transferred to the drain pan, so that the ice that has not been thawed can also be quickly melted. The amount of residual water can be reduced.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cooling unit according to an embodiment of the present invention will be described below with reference to the drawings.

1 to 5 show a cooling unit in an embodiment of the present invention. 1 is a perspective view of a cooling unit,
FIG. 2 is a vertical sectional view of the cooling unit shown in FIG. 3 is a perspective view of the drain pan of the cooling unit, FIG. 4 is a perspective view of the drain pan of the cooling unit alone, and FIG. 5 is an enlarged view of the fixing plate of the drain heater attached to the drain pan of the cooling unit. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5, the same components as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

Reference numerals 10a and 10b denote a drain pan 2 and a case 1
Shows the pitch of holes for fixing to. 10a is a pitch of holes for attaching to the front surface and the rear surface of the case 1, and 10b
Is a pitch of holes to be attached to both side surfaces of the case 1. The hole pitches 10a and 10b are formed symmetrically.

Reference numeral 11 is a holding plate having one end spot-welded to the drain pan 2, and 12 is a drain heater fixing plate for directly fixing the drain heater 6b to the inner surface of the drain pan 2. 13 is a drain heater via a holding plate 11.
It is a screw for fixing the fixing plate 12. Reference numeral 14 denotes a hydrophilic treatment applied to the inner surface of the drain pan 2.

The operation of the cooling unit configured as described above will be described below.

First, when the case 1 is installed in the prefabricated refrigerator, the installation position is determined and then fixed to the prefabricated refrigerator. At this time, when the position of the drain water discharge pipe 8 of the drain pan 2 is installed from the center of the prefabricated refrigerator, the hole pitches 10a on the front and rear surfaces of the drain pan 2 fixed to the case 1 and the both side surfaces. By removing the screw attached to the hole pitch 10b, the drain pan 2 can be fixed by changing the direction of the drain pan 2 to a position closest to draining drain water to the outside of the refrigerator.

This is because the front and rear hole pitches 10a of the drain pan 2 fixed to the case 1 and the hole pitches 10b on both side surfaces are symmetrical and are opened at the same pitch. The direction of can be changed.

At this time, the drain heater 6b held by the heater fixing plate 12 via the holding plate 11 in the drain pan 2 and the screw 13 fixing the heater fixing plate 12 are fixed. By removing the drain heater 6b, the drain heater 6b can be easily removed, and the workability and the serviceability when replacing the parts of the drain heater 6b are improved.

Further, during the defrosting operation, the water that has melted down from the cooler 5 to the drain pan 2 by the defrosting heater 6a is treated with the hydrophilic treatment 14 applied to the inner surface of the drain pan 2.
As a result, it flows toward the inclined side edge portion of the drain pan 2 while spreading rapidly. Further, since the drain heater 6b is directly fixed to the drain pan 2, the heat of the drain heater 6b is efficiently transferred to the drain pan 2, so that the unmelted ice can be quickly melted to reduce the residual water content. be able to.

[0030]

As described above, according to the present invention, a cooler provided in a case and provided with a defrosting heater for cooling the air in the refrigerator, and a cooler provided below the cooler. The drain water dropped from the cooler has a downward slope, and a drain pan provided with a drain heater for discharging the drain water to the outside of the case by a drain water discharge pipe provided at a side edge of the slope, The case is provided with a fan motor provided via a motor fixing plate, and the fixing hole pitches of the drain pan are symmetrically unified so that either of them can be arranged in the case. Therefore, even if the conditions for installing the cooling unit in the prefabricated refrigerator differ, the drain pan direction is changed to the closest position when drain water is discharged to the outside of the refrigerator without lengthening the drain hose. Since it can be installed, the dead space in the warehouse is suppressed as much as possible It is possible.

Further, according to the present invention, a cooler is provided in the case, the cooler having a defrosting heater for cooling the inside air, and the cooler provided below the cooler. A drain pan having a drain heater for sloping down the drain water dropped from the container and discharging the drain water to the outside of the case by a drain water discharge pipe provided at the side edge of the slope, and the case. To
And a fan motor provided via a water fixing plate to facilitate the attachment and detachment of the drain heater fixing plate of the drain heater provided in the drain pan. -Since the water is held by the drain pan, when changing the direction of the drain pan, the drain heater
Since it can be easily attached and detached when exchanging, it has excellent workability and serviceability.

Further, according to the present invention, a cooler provided in the case and equipped with a defrosting heater for cooling the air in the refrigerator, and a cooler provided below the cooler are provided. A drain pan having a drain heater for sloping down the drain water dropped from the container and discharging the drain water to the outside of the case by a drain water discharge pipe provided at the side edge of the slope, and the case. To
A fan motor provided through a rotor fixing plate, and the inner surface of the drain pan is subjected to a hydrophilic treatment, so that the defrost heat is removed from the cooler during the defrosting operation.
The water that has fallen into the drain pan due to the water flows toward the inclined side edge of the drain pan as it spreads quickly, and the drain heater is fixed directly to the drain pan, so the heat of the drain heater is efficiently transferred to the drain pan. Therefore, the amount of residual water can be reduced by quickly melting the ice that has not been thawed.

[Brief description of drawings]

FIG. 1 is a perspective view of a cooling unit according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a cooling unit according to an embodiment of the present invention.

FIG. 3 is a perspective view of the drain pan of the cooling unit according to the embodiment of the present invention.

FIG. 4 is a perspective view of a single drain pan of the cooling unit according to the embodiment of the present invention.

FIG. 5 is an enlarged view of a drain heater fixing plate attached to a drain pan of a cooling unit according to an embodiment of the present invention.

FIG. 6 is a perspective view of a conventional cooling unit.

FIG. 7 is a vertical sectional view of a conventional cooling unit.

FIG. 8 is a perspective view of a drain pan of a conventional cooling unit.

[Explanation of symbols]

 1 Case 2 Drain Pan 3 Fan Motor 3a Fan Motor Fixing Plate 5 Cooler 6a Defrosting Heater 6b Drain Heater 8 Drain Water Discharge Pipe 10a Drain Pan Fixing Hole Pitch 10b Drain Pan Fixing Hole Pitch 11 Drain heater-fixing plate 14 Hydrophilic treatment

Claims (3)

[Claims] 1. A cooler provided in a case and provided with a defrosting heater for cooling air in the refrigerator, and a cooler provided below the cooler and dropped from the cooler. A drain pan having a drain heater having a downward slope for draining drain water to the outside of the case by means of a drain water drain pipe provided at a side edge of the slope, and a motor for the case. A cooling unit comprising: a fan motor provided via a fixing plate, wherein the fixing hole pitches of the drain pan are symmetrically unified and can be arranged in either of the cases. 2. A cooler provided in a case and provided with a defrosting heater for cooling the air in the refrigerator, and a cooler provided below the cooler and dropped from the cooler. The drain pan is provided with a drain heater which has a downward slope and drains the drain water to the outside of the case by a drain water discharge pipe provided at the side edge of the slope, and a motor for the case. -Drain heater of the drain heater provided in the drain pan, which is provided with a fan motor provided via a fixing plate.
A cooling unit characterized in that the fixing plate is easily attached and detached. 3. A cooler provided in a case and equipped with a defrosting heater for cooling air in the refrigerator, and a cooler provided below the cooler and dropped from the cooler. The drain pan is provided with a drain heater which has a downward slope and drains the drain water to the outside of the case by a drain water discharge pipe provided at the side edge of the slope, and a motor for the case. A cooling unit comprising: a fan motor provided via a fixing plate, wherein the inner surface of the drain pan is subjected to a hydrophilic treatment.