JP2001324174A - Freezer unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a freezer unit capable of cooling electrical component parts without causing its unit to become large in size. SOLUTION: A freezer unit divided by a partition plate into a compressor chamber and an electrical component chamber is constructed such that a side plate enclosing the compressor chamber and the electrical component chamber is provided with an aeration port, a cross flow fan for use in guiding air in the electrical component chamber is arranged at the upper part of the partition plate, resulting in that when the fan is rotated, air flows in the aeration port of the electrical component chamber, the electrical component chamber, a fan and the compressor chamber, so that the electrical components are efficiently cooled with this flow of air. In addition, since a mount for the motor is not required, a large-size of the unit can be avoided by fixing the cross flow fan.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator unit connected to a condenser or an evaporator by piping.

[0002]

2. Description of the Related Art Conventionally, this type of refrigerator unit has a gas-liquid separator, which constitutes a part of a refrigeration cycle, in a casing.
Built-in compressor, oil separator, liquid receiver, etc., inverter and control electrical parts for driving the compressor, these devices are connected to the condenser and evaporator by piping and used. I have.

During operation of the refrigerator unit, the high-pressure part of the compressor, the oil separator, and the pipes connecting them become high in temperature and heat the surroundings. In the casing, each device is partitioned and arranged in a compressor room in which a compressor and a gas-liquid separator and an oil separator connected thereto are arranged, and an electric room in which a liquid receiver and electric components are arranged, The space is divided by a partition plate.

Here, it is necessary to cool the compressor chamber and the electrical equipment chamber in the casing in order to prevent a rise in temperature. This is achieved by providing a ventilation port for introducing and discharging outside air to the side plate of the casing. It was performed by inflow, but could not be cooled sufficiently.

[0005]

Therefore, an attempt has been made to mount a propeller fan on the above-mentioned refrigerator unit to cool the refrigerator unit. However, there is a problem that a support leg for supporting a fan motor of the propeller fan must be arranged. There was,
There is a problem that the unit becomes large due to the necessity of disposing a fan casing for forming the air passage.

SUMMARY OF THE INVENTION An object of the present invention is to sufficiently cool electrical components without increasing the size of a unit and to reduce the size of a refrigerator unit.

[0007]

According to a first aspect of the present invention, there is provided a refrigerator unit including a condenser, an evaporator, and the like connected by pipes, and a casing inside the unit. A compressor room in which the compressor is arranged,
In a refrigerator unit in which an electric component room in which electric components are arranged is partitioned by a partition plate, a ventilation port is provided below the side plate forming the compressor room and the electric component room, and the air in the electric component room is provided in the partition plate. Is provided with a configuration in which a cross-flow fan that guides the air to the compressor room is provided.By operating the cross-flow fan, air outside the unit is sucked from the ventilation hole of the electrical equipment room, and the sucked air is removed from the compressor room. When the air is blown into the compressor room, the air in the compressor room is exhausted from the ventilation port of the compressor room.

According to a second aspect of the present invention, the electronic component has a configuration in which the electronic component is an electrical component for inverter control of the compressor. In particular, the electronic component performs so-called constant speed control without inverter control. Although the calorific value is larger than that performed, the cooling of the electrical components is efficiently performed by the flow of air.

The invention according to claim 3 is characterized in that the ventilation port is provided with a louver facing downward and obliquely downward, so that rainwater and the like can be protected even if the refrigerator unit is installed outdoors. It can be difficult to enter.

[0010] The invention according to claim 4 is characterized in that the cross flow fan is configured to be operated when the temperature of the electric equipment chamber falls within a predetermined range, and particularly when the heat of the electric parts is large and the temperature is high. Only the electrical components can be cooled.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing a state in which a ceiling panel of a refrigerator unit is removed. In this example, a compressor 1, a gas-liquid separator 2, and an oil separator 3 are arranged on a left side in a casing 6 of the unit. Comprises a room 10,
An electrical component box 4 containing electrical components and the like and a liquid receiver 5 are arranged on the right side to form an electrical component room 11.

The electric box 4 is provided with ventilation holes (not shown). In a unit for controlling the compressor by an inverter, electric parts of the inverter are incorporated in the electric box 4 to cool a semiconductor element having radiating fins (not shown). Container is electrical box 4
Attached to

The temperature between the compressor chamber 10 and the electrical equipment chamber 11 rises due to the compression heat during operation of the compressor 1 or the heat generated by the electric motor. In order to prevent this, each room is partitioned by a partition plate 12.

Then, behind the electrical box 4 located above the electrical equipment room 11, as shown in the front view of FIG.
A cross-flow fan 13 that guides the air in the electrical equipment room 11 to the compressor room 10 is disposed above the
1 A configuration is provided in which ventilation holes 7a and 7b are provided below the right side plate 6a and the left side plate 6b of the compressor chamber 10.

As shown in FIG. 3, the louvers 8 are formed by partially cutting the side plates 6a, 6b of the casing 6 by pressing or the like, and projecting the louvers 8 in a convex shape so as to eave outward. The louver 8 faces obliquely downward and downward.

In the refrigerator unit of the present invention configured as described above, when the temperature of the upper part of the electrical equipment room 11 rises due to the heat generated by electrical components such as an inverter that generates a large amount of heat during operation, the inside of the electrical equipment room 11 or The cross flow fan 13 is operated by a temperature sensor (not shown) installed in the electrical box 4. As a result, air outside the unit is sucked in from the ventilation opening 7a of the electrical component room 11, and the electrical component box 4 or electrical components in the electrical component box 4 are cooled while the sucked air passes through the electrical component room 11.

Further, the cross flow fan 13 is connected to the electrical equipment room 1.
1 is sent into the compressor chamber 10 to cool the compressor 1 whose temperature has increased during operation, and
From the unit through the ventilation port 7b of
It is possible to efficiently and sufficiently cool the electrical components and the compressor.

The cross flow fan 13 is disposed on the above-mentioned partition plate 12 and has a space between the electrical equipment room 11 and the compressor room 10 before and after it, so that the air at the positions of the ventilation holes 7a and 7b can be removed. The flow becomes gentle and the ventilation holes 7a, 7
Since the direction of b constitutes the louver 8 in a range from obliquely downward to downward, it is possible to prevent rainwater from being sucked, and to prevent deterioration of electrical components due to this. Furthermore, since there are no movable parts at the ventilation openings 7a and 7b, safety can be obtained, and the degree of freedom of the installation location of the refrigerator unit can be increased.

Although a cross flow fan is used in the present invention, an axial fan or the like which does not require a special mounting device for fixing a fan motor for mounting may be used similarly to the cross flow fan. Accordingly, it is possible to prevent the unit from being enlarged due to the necessity of disposing a fan casing for forming a ventilation path.

Further, the mounting position of the fan is not limited to the electric compartment side of the partition plate of the present invention, and the same effect can be obtained at a position straddling the partition plate or at the compressor room side. The arrangement of the ventilation holes is not limited to the above-described side plate on the right side of the electrical equipment chamber and the side plate on the left side of the compressor chamber, and may be provided on the front and back side plates of the casing.

[0021]

As described above, according to the first aspect of the present invention, there is provided a refrigerator unit configured by connecting a condenser, an evaporator, and the like with piping, and the arrangement of the compressor in a casing of the unit. In a refrigerator unit in which a compressor room and an electrical component room in which electrical components are arranged are partitioned by a partition plate, a ventilation port is provided below a side plate forming the compressor chamber and the electrical component room, and the partition is provided. By operating the cross-flow fan on the plate by providing a cross-flow fan that guides the air in the electrical equipment room to the compressor room,
Air outside the unit is sucked in from the ventilation opening of the electrical equipment room, and when this sucked air is blown into the compressor room, the air in the compressor room is exhausted from the ventilation opening of the compressor room, so that the electrical equipment room is discharged. In addition, it is possible to sufficiently cool the electric components arranged in the compressor and the compressor arranged in the compressor chamber, and to reduce the size of the unit.

According to the second aspect of the present invention, the electric component is configured to be an electric component for inverter control of the compressor. In particular, the electric component does not perform inverter control, so-called constant speed control. Although the heat generation is larger than that of the compressor, the cooling of electrical components is efficiently performed by the flow of air, and the heat generation increases due to the operating current that increases with the load on the compressor. Operating range of the inverter to be expanded.

According to the third aspect of the present invention, the ventilation port is provided with a louver facing downward and obliquely downward, so that even if the refrigerator unit is installed outdoors, rainwater or the like may be provided. This makes it possible to prevent deterioration of electrical components and to increase the degree of freedom in installation locations.

According to the fourth aspect of the present invention, the cross flow fan is configured to be operated when the temperature of the electrical equipment chamber falls within a predetermined range. Only when is it possible to forcibly cool the electrical components, and the operating efficiency of the entire refrigerator unit can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention in which a ceiling panel of a refrigerator unit containing a compressor, electrical components and the like is removed.

FIG. 2 is a front view of the embodiment of the present invention in a state where a front side plate is removed.

FIG. 3 is a cross-sectional view of a main part of a ventilation port provided on a side plate according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 4 Electrical box 6a, 6b Side plate 7a, 7b Ventilation port 10 Compressor room 11 Electrical room 12 Partition plate 13 Cross flow fan

Claims (4)

[Claims] 1. A refrigerating unit configured by connecting a condenser, an evaporator, and the like to a pipe, wherein a compressor room in which a compressor is disposed in a casing of the unit, and an electric device in which electric components are disposed. In a refrigerator unit in which a chamber is partitioned by a partition plate, a ventilation port is provided below a side plate that forms the compressor chamber and the electrical equipment chamber, and a cross that guides air in the electrical equipment chamber to the compressor chamber is provided in the partition plate. A refrigerator unit in which a flow fan is arranged. 2. The refrigerator unit according to claim 1, wherein the electrical component is an electrical component for controlling an inverter of the compressor. 3. The refrigerating machine unit according to claim 1, wherein the ventilation port is provided with a louver facing downward from obliquely downward. 4. The refrigeration unit according to claim 1, wherein the cross flow fan is operated when the temperature of the electrical equipment room reaches a predetermined range.