JP3716896B2 - refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator in which a compressor and a condenser of a cooling device are installed in a machine room, and external air is forcibly ventilated in the machine room by a blower.
[0002]
[Prior art]
Conventionally, this type of household refrigerator has a freezing room, a refrigeration room, etc. in a heat insulation box, and a cooling device cooler is installed in the freezing room to cool each room. The vessel was installed in a machine room formed at the lower part of the heat insulation box, and these were air-cooled by forcibly ventilating outside air with a blower.
[0003]
The plane sectional view of the machine room 102 part of the conventional refrigerator 101 which concerns on FIG. 4 is shown. In this figure, an outside air intake 103 is formed on the front surface of the machine room 102, and an outside air discharge port 104 is formed on the left side of the rear surface. The inside of the machine room 102 is divided forward and backward by a partition wall 106, and the front and rear of the partition wall 106 are communicated with a communication portion 107 on the right side of the partition wall 106.
[0004]
A condenser 111 of the cooling device is installed on the front side of the partition wall 106, and a compressor 108 of the cooling device is installed on the rear side of the partition wall 106 and in front of the discharge port 104. A blower (axial fan: propeller fan) 109 operated by a motor 112 is installed on the right side of the compressor 108.
[0005]
With this configuration, when the motor 112 of the blower 109 is operated, outside air is taken in from the intake port 103 of the machine room 102, first passes through the condenser 111, and then air-cooled, and then from the communication unit 107 through the blower 109 to the compressor 108. Then, the compressor 108 is air-cooled and then discharged from the discharge port 104 (the flow of wind at this time is indicated by white arrows in FIG. 4). As a result, the compressor 108 is cooled while condensing the high-temperature refrigerant in the condenser 111.
[0006]
[Problems to be solved by the invention]
However, in recent years, since the performance of the condenser 111 has been improved, the heat dissipation performance of the condenser 111 has been improved, and the temperature of the outside air after passing through the condenser 111 has also increased. For this reason, the air cooling capacity of the compressor 108 is decreasing, and particularly when the load is high, such as when the refrigerator is pulled down or after defrosting, the temperature of the compressor 108 rises abnormally, resulting in operation. There was a risk of seizure as well as a decrease in efficiency.
[0007]
The present invention has been made to solve the conventional technical problems, and provides a refrigerator capable of reliably and smoothly performing air cooling of a compressor and a condenser installed in a machine room. .
[0008]
[Means for Solving the Problems]
The refrigerator of the present invention is configured by installing a compressor and a condenser of a cooling device in a machine room, and includes an outside air inlet and an outside air outlet configured in the machine room, and an outside air through the outside air inlet through the compressor. A first ventilation path leading to the outlet, a second ventilation path leading from the outside air inlet through the condenser to the outside air outlet, a first blower for forcing the outside air through the first ventilation path, A second blower for forcibly venting outside air to the second ventilation path, and these two blowers are driven by a single motor arranged on the partition wall between the two blowers It is.
[0009]
According to the present invention, in a refrigerator in which a compressor and a condenser of a cooling device are installed in a machine room, an outside air inlet and an outside air outlet configured in the machine room, and an outside air outlet through the compressor from the outside air inlet. A first air passage leading to the outside air, a second air passage leading from the outside air inlet through the condenser to the outside air outlet, a first air blower for forcing the outside air through the first air passage, and a second air passage The second air blower for forcibly venting the outside air is provided in the air passage, and both the air blowers are driven by a single motor disposed on the partition wall between the air blowers . It is possible to flow outside air to the condenser as usual with the blower and air-cool the condenser, and to let the outside air that has not passed through the condenser flow directly to the compressor with the first blower, and to cool the compressor strongly with low-temperature outside air It becomes.
[0010]
As a result, the compressor can be strongly air-cooled to reduce its load, thereby improving the operation efficiency and durability of the compressor. In particular, since both fans are driven by a single motor, energy saving and space saving can be achieved, and the production cost can be reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan sectional view of a machine room 2 portion of a household refrigerator 1 as an embodiment to which the present invention is applied.
[0012]
The refrigerator 1 of the present invention forms a freezer compartment or a refrigerator compartment in a heat insulation box (not shown), a machine room 2 is formed in the lower part of the heat insulation box, and an outside air inlet is provided on the front surface 2A of the machine room 2. 3 and a discharge port 4 for the outside air is formed at the center of the rear surface 2B. The machine room 2 is divided into two regions by a partition wall 6 and a partition wall 16.
[0013]
In this case, the partition wall 6 is substantially L-shaped, and its front end 6A partitions the intake port 3 to the left and right, and from the front end 6A to the left side surface 2C of the machine room 2 with a predetermined distance to the rear. It is extended. Then, it bends to the right with a predetermined distance from the rear surface 2B, and its right end 6B ends with a predetermined distance from the right side surface 2D of the machine room 2 and constitutes a communicating portion 7 there. .
[0014]
The partition wall 16 extends rearward from the front of the right end 6B of the partition wall 6 and reaches the discharge port 4 to partition the discharge port 4 to the left and right. The partition wall 16 is cut out at the center, and a storage portion 18 is formed there.
[0015]
As a result, a ventilation path (first ventilation path) 8 is formed in the machine room 2 on the left side of the partition wall 6 and the partition wall 16 from the left part of the intake port 3 to the left part of the discharge port 4. In the machine room 2 on the right side of the partition wall 6 and the partition wall 16, a ventilation path (second ventilation path) 9 extending from the right portion of the intake port 3 to the right portion of the discharge port 4 through the communication portion 7. Is configured.
[0016]
Then, a condenser 11 of a cooling device is installed in the ventilation path 9 on the front side of the communication part 7 and on the right side of the partition wall 6, and on the left rear side of the partition wall 6 and on the left side of the partition wall 16. That is, the compressor 12 of the cooling device is installed in the ventilation path 8 in the rear left corner of the machine room 2.
[0017]
A motor 13 is disposed in the storage portion 18 of the partition wall 16. A rotating shaft 13A of the motor 13 protrudes left and right, and a blower (first blower) 14 composed of an axial fan is attached to the left end of the rotating shaft 13A. A blower (second blower) 17 composed of an axial fan is also attached.
[0018]
The blower 14 is positioned between the compressor 12 and the discharge port 4, and the blower 17 is positioned between the communication unit 7 and the discharge port 4.
[0019]
Next, the operation of the above configuration will be described. A cooler (not shown) that constitutes a cooling device together with the compressor 12 and the condenser 11 is disposed in the freezer compartment (not shown) in the heat insulation box. When the temperature in the freezer compartment is higher than a set value, the operation signal And a control device (not shown) operates the compressor 12.
[0020]
The high-temperature and high-pressure gas refrigerant discharged from the compressor 12 dissipates heat in the condenser 11, condenses and liquefies, then is throttled through a decompression device (capillary tube or the like) (not shown), flows into the cooler, and evaporates. The freezer compartment and the refrigerator compartment are cooled by the endothermic action at this time.
[0021]
On the other hand, the control device operates the motor 13 in synchronization with the compressor 12. When the motor 13 is operated and the blower 17 is driven by the rotating shaft 13A, the outside air is taken in from the intake port 3 on the right side of the machine room 2, enters the ventilation path 9, passes through the condenser 11, and is cooled by air. Then, the air is discharged from the right side of the discharge port 4 through the communication unit 7 and the blower 17. Thereby, the high-temperature refrigerant is condensed in the condenser 11.
[0022]
At the same time, the blower 14 is also operated by the rotating shaft 13 </ b> A of the motor 13. When the blower 14 is operated, outside air is taken in from the intake port 3 on the left side of the machine room 2, passes through the ventilation path 8, passes through the compressor 12, is cooled by air, and is discharged from the left side of the discharge port 4 through the blower 14. (The flow of these winds is indicated by white arrows in FIG. 1).
[0023]
As a result, the compressor 12 is directly exposed to the outside air (low temperature outside air not passing through the condenser 11) by the blower 14. And if it cools to the set value in the said freezer compartment, an operation signal will disappear and a control apparatus will stop the compressor 12. FIG. As a result, the motor 13 is also stopped, and the above is repeated to maintain the temperature in the freezer compartment (the temperature of the refrigerator compartment is controlled by a damper or the like) at a set value.
[0024]
In this way, in the present invention, outside air is caused to flow to the condenser 11 by the blower 17 and the condenser 11 is air-cooled, and outside air that has not passed through the condenser 11 is caused to flow directly to the compressor 12 by the blower 14, so The compressor 12 is air-cooled.
[0025]
As a result, the load on the compressor 12 can be reduced, and the operational efficiency and durability of the compressor 12 can be improved. In particular, since both the fans 14 and 17 are driven by a single motor 13, energy saving and space saving can be achieved, and the production cost can be reduced.
[0026]
In the above embodiment, the blowers 14 and 17 are constituted by axial fans. However, the present invention is not limited to this, and the blower is a so-called sirocco fan or turbo fan that sucks or discharges air from the axial direction and discharges or sucks air from the radial direction. 14 and 17 may be configured. The sirocco fan and the turbo fan according to FIG. 2 are shown side by side with the motor 13 and the axial flow fan.
[0027]
In the above embodiment, the rotating shaft 13A protrudes on both sides of the motor 13, and the blowers 14 and 17 are attached to the left and right ends of the rotating shaft 13A as shown in FIG. As shown in C), the rotary shaft 13A may protrude relatively long in one direction of the motor 13, and the blower 17 and the blower 14 may be attached to the tip and midway of the rotary shaft 13A, respectively.
[0028]
However, in that case, the motor 13 is provided in the ventilation path 8, and it is necessary to arrange | position so that the partition wall 16 may come between the air blower 14 and the air blower 17 (rotating shaft 13A penetrates the partition wall 16). 3B is a view corresponding to FIG. 3A when both fans 14 and 17 are constituted by turbo fans or sirocco fans, and FIG. 3D is a turbo fan or sirocco. It is a figure equivalent to (C) of Drawing 3 when both fans 14 and 17 are constituted with a fan. Although not shown, the axial flow fan, the sirocco fan, and the turbo fan may be installed in different types.
[0029]
Moreover, although the domestic refrigerator was demonstrated in the Example, this invention is effective not only to it but to a commercial refrigerator, a showcase, etc.
[0030]
【The invention's effect】
As described above in detail, according to the present invention, in a refrigerator in which a compressor and a condenser of a cooling device are installed in a machine room, an outside air inlet and an outside air outlet formed in the machine room, and a compressor from the outside air inlet. A first ventilation path leading to the outside air outlet, a second ventilation path leading from the outside air inlet to the outside air outlet via the condenser, and a first for forcing the outside air to the first ventilation path A blower and a second blower for forcing the outside air to the second ventilation path are provided, and both the blowers are driven by a single motor disposed on a partition wall between the blowers . Therefore, outside air is allowed to flow to the condenser by the second blower as before, the condenser is air-cooled, and outside air that has not passed through the condenser is directly flowed to the compressor by the first blower, and the compressor is strongly driven by the low-temperature outside air. Air cooling It can become.
[0031]
As a result, the compressor can be strongly air-cooled to reduce its load, thereby improving the operation efficiency and durability of the compressor. In particular, since both fans are driven by a single motor, energy saving and space saving can be achieved, and the production cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan sectional view of a machine room portion of a refrigerator to which the present invention is applied.
FIG. 2 is a diagram illustrating a motor, an axial fan, a sirocco fan, or a turbo fan.
FIG. 3 is a view showing an example of attachment of each blower to a motor.
FIG. 4 is a plan sectional view of a machine room portion of a conventional refrigerator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Machine room 3 Intake port 4 Outlet port 6, 16 Partition wall 8, 9 Ventilation path 11 Condenser 12 Compressor 13 Motor 13A Rotating shaft 14, 17 Blower

Claims (1)

In a refrigerator that has a compressor and condenser of a cooling device installed in the machine room,
An outside air inlet and an outside air outlet configured in the machine room, a first ventilation path from the outside air inlet through the compressor to the outside air outlet, and the outside air exhaust from the outside air inlet through the condenser. A second ventilation path leading to the outlet, a first blower for forcing the outside air through the first ventilation path, and a second blower for forcing the outside air through the second ventilation path The refrigerator is characterized in that both of these fans are driven by a single motor disposed on the partition wall between the fans .

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