JP4900558B2 - Outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner or a refrigeration apparatus, and is particularly suitable for a cooling device that efficiently cools a heating element such as an electric component.

  Conventionally, in an outdoor unit, air after passing through a heat exchanger is often guided and cooled by a radiation fin. However, for example, a heat exchanger becomes a condenser during cooling operation of an air conditioner. The air after passing becomes high temperature, and the cooling efficiency of the radiating fins is deteriorated.

  Therefore, it is known that an outside air intake is further provided and the heat radiation fin is directly cooled by the outside air, which is described in Patent Document 1, for example.

Japanese Patent Laying-Open No. 2005-83618.

  In the above prior art, when used in an area where the operation load is large and the heat generation of the electrical product is large, the cooling is insufficient when the capacity of the electrical product is large and the heat generation is large in a large product. It was necessary to increase the size of the product as an outdoor unit.

An object of the present invention is to obtain an efficient cooling effect even in a cooling operation with a high outside air temperature .

The present invention provides a blower chamber in which a heat exchanger, a blower fan, and a fan motor that rotationally drives the blower fan, a compressor, a refrigerant pipe, and an inverter control device that controls the operation of the compressor are arranged outside air. A plurality of fins extending in the vertical direction so as to protrude from the machine room to the blower room, in an outdoor unit comprising a machine room having an outside air introduction port for introducing air and a partition plate that divides the blower room and the machine room and radiating fins arranged in surround a portion of the heat radiating fins, and a fin cover is a duct shaped to pass air, one of the outside air is the plurality of the machine chamber side from the outside air introduction port through inter-fin, the guided fin cover leads to the blower chamber through between the plurality of fins of the blower chamber side, the outside air the other is introduced into the blower chamber through the heat exchanger Serial is passing shall between the plurality of fins of the blower chamber side.

Further, in those described above, the heat radiation fins, it is desirable that the plurality of fins has been base parallel horizontally.
Further, in the above, the fin cover has an opening on the side of the blower fan of the radiating fin, and is introduced into the blower chamber through the outside air introduced from the outside air introduction port and the heat exchanger at the opening. It is desirable to arrange so that outside air is mixed.

Furthermore, in the above, it is desirable that the heat dissipating fins have a bottom surface that is flat on the machine room side, and a plurality of fins are upright with respect to the bottom surface.
Further, in the above, the heat radiation fin has a plate-shaped bottom surface on the machine room side, and a plurality of fins are erected with respect to the bottom surface, and the plurality of fins straddle the machine room and the fan room. It is desirable.

According to the present invention, it is possible to obtain a better heat even in the case of high outside air temperature cooling operation.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of an outdoor unit, FIG. 2 is a top view, and FIG. 3 is an enlarged perspective view of a portion to be cooled. The outdoor unit 1 includes a blower room 3 and a machine room 4 separated by a partition plate 2, and the blower room 3 includes a heat exchanger 5, a blower fan 6, and a fan motor 7. Air is blown to the heat exchanger 5 by the rotating blower fan 6. The machine room 4 includes a compressor 8, an inverter control device 9, an electrical product 10, an electrical box 15, a refrigerant pipe 11, and an outside air inlet 14, and the compressor 8 and the heat exchanger 5 are connected by the refrigerant pipe 11. Yes. The inverter controller 9 and the electrical product 10 attached to the electric box 15 control the operation of the fan motor 7 and the compressor 8, and the refrigerant is circulated to the heat exchanger 5 and the compressor 8 through the refrigerant pipe 11. The An outside air introduction port 14 is provided at a position where water does not enter the position of the inverter control device 9 and the electrical product 10, and outside air is introduced.

  A heat dissipating fin 12 attached so as to be exposed to the blower chamber 3 side from the square hole of the partition plate 2 and a fin cover 13 that forms a duct around the heat dissipating fin 12 are provided. The heat of the electrical product 10 is radiated by the radiation fins 12. The heat dissipating fins 12 have a flat bottom surface on the machine 4 chamber side, and a plurality of fins are erected with respect to the bottom surface, and the plurality of fins are disposed across the machine chamber 4 and the blower 3. Yes.

4 and 5 show the flow of air around the radiating fin 12 during operation of the outdoor unit 1 by arrows. 4 is an enlarged top view of a portion for cooling, and FIG. 5 is an enlarged perspective view of a portion for cooling.
The outside air is guided to the radiation fins 12 by the fin cover 13 through the machine room 4 from the outside air introduction port 14 due to the pressure difference between the inside of the blower chamber 3 which is negative pressure due to the rotation of the blower fan 6 and the atmospheric pressure. It is introduced into the chamber 3. Further, the other of the outside air passes through the heat exchanger 5 by the rotation of the blower fan 6 and is sucked into the blower chamber 3, and a part of the fin cover 13 is opened. As a result, outside air having a low temperature is mixed on the secondary side of the heat exchanger 5 from which a large air volume is obtained, and the radiating fins 12 attached to a heating element such as an inverter are cooled. The cooling fins 12 can be efficiently cooled even in a cooling operation as a condenser (the temperature on the secondary side of the heat exchanger 5 is higher than in other operations) and when the outside air temperature is relatively high.

  As the blower fan 6 rotates, the inside of the blower chamber 3 becomes negative pressure, and the pressure is lower than the outside of the outdoor unit 1. The outside air introduction port 14 is provided in the machine room 4 and the heat radiation fins 12 are projected from the square holes of the partition plate 2, so that the outside of the blower room 3 and the outdoor unit 1 is connected, and the negative pressure of the blower room 3 is in operation. And the atmospheric pressure outside the outdoor unit 1 causes a pressure difference, so that air flows from the outside of the outdoor unit 1 to the blower chamber 3. Furthermore, the outside air introduced into the heat radiating fins 12 is flowed efficiently by attaching the duct-shaped fin cover 13.

  Furthermore, since the flow of the outside air introduced by the duct of the fin cover 13 at the entrance of the radiating fin 12 is almost determined, a part of the fin cover 13 corresponding to the downstream side of the outside air flow in the radiating fin 12 is opened. The air after passing through the heat exchanger 5 that flows in by the rotation of the blower fan 6 is caused to flow through the portion where the fin cover 13 is opened and the heat radiating fins 12 are exposed. Thus, since the air volume which hits the radiation fin 12 increases by adding the air after passing through the heat exchanger 5 to the outside air introduced from the outside of the outdoor unit 1 into the blower chamber 3, efficient cooling is performed. It can be carried out.

Further, since the fins of the radiation fins 12 are arranged along the flow of the outside air introduced into the blower chamber 3 through the machine chamber 4 from the air and the outside air inlet 14 after passing through the heat exchanger 5, The inverter can be cooled more efficiently.
That is, the outside air sucked from the outside air inlet 14 of the machine room 4 is introduced into the blower room 3 through the machine room 4, flows through the heat radiation fins 12, and flows toward the rotating blower fan 6. Further, the air after passing through the heat exchanger 5 passes through the heat radiation fins 12 and flows toward the rotating blower fan 6. Thereby, since the flow in the radiation fin 12 goes to the blower fan 6 and becomes a horizontal flow, the fins of the radiation fin 12 are horizontal and the fins are arranged in the vertical direction. Therefore, by arranging the fins of the heat radiating fins 12 in the direction along the flow, air is equally applied to the fins of the heat radiating fins 12, so that efficient cooling can be achieved.

Further, the outside air sucked from the outside air introduction port 14 of the machine room 4 passes through the atmosphere of the machine room 4 affected by the heat generated by the inverter control device 9 and the electric product 10 and is introduced into the blower room 3. On the other hand, the outside air introduced from the outside air introduction port 14 is mixed with the air after passing through the heat exchanger 5 in the blower chamber 3. In the cooling operation, since the heat exchanger 5 is a condenser, the air after passing through the heat exchanger 5 is hotter than the outside air, and the outside air introduced from the outside air inlet 14 and the heat exchanger 5 pass through. When the subsequent air is mixed and hits the radiating fin 12, the temperature of the struck air is high, and the cooling efficiency of the radiating fin 12 is deteriorated. For this reason, the radiating fins 12 are arranged so that the outside air introduced from the machine room 4 is located immediately after being introduced into the blower room 3. Therefore, since the air introduced from the machine room 4 is applied to the radiation fins 12 at a low temperature before being affected by the air after passing through the heat exchanger 5, efficient cooling can be achieved.
Further, even when a heat generating element having a large electric capacity is required by the heat dissipating fins 12 described above, the dimensions of the product for heat dissipating, such as enlarging the heat dissipating fins 12 or widening the cooling space for heat dissipating. There is no need to increase the size. Therefore, even in a product with a large calorific value and a large capacity, the heat radiation fins 12 are small and the space for cooling is not wide, so that the size of the product can be reduced.

  Furthermore, since the heat radiation fin 12 efficiently cools the heat generated by the inverter control device 9 and the electrical product 10, the inverter control device 9 and the electrical product 10 can be operated up to the upper limit region of the usage range where the heat generation amount is large. The operating range can be expanded. In addition, the radiation fins 12 can be used even in an operation in the upper limit region where a maximum load is applied and a large amount of heat is generated in the usage range of the inverter control device 9 and the electrical product 10. Even when the operation range is limited in order to suppress the heat generation of the electrical product 10, the operation range can be expanded.

The front view which shows the structure of the air conditioner which is one Example of this invention. The top view which shows the structure of the air conditioner which is one Example of this invention. The perspective view which expands and shows the part which performs the cooling in the structure of the air conditioner which is one Example of this invention. The upper view which expands and shows the flow part of the air during the driving | operation of the air conditioner of one Example. The perspective view which expands and shows the flow part of the air during the driving | operation of the air conditioner of one Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outdoor unit of air conditioner, 2 ... Partition plate, 3 ... Blower room, 4 ... Machine room, 5 ... Heat exchanger, 6 ... Blower fan, 7 ... Fan motor, 8 ... Compressor, 9 ... Inverter control device DESCRIPTION OF SYMBOLS 10 ... Electric goods, 11 ... Refrigerant piping, 12 ... Radiation fin, 13 ... Fin cover, 14 ... Outside air inlet, 15 ... Electric box.

Claims (5)

Outside air that introduces outside air by arranging a blower chamber in which a heat exchanger, a blower fan, and a fan motor that rotationally drives the blower fan, a compressor, a refrigerant pipe, and an inverter control device that controls the operation of the compressor are arranged. In an outdoor unit comprising a machine room having an introduction port, and a partition plate separating the blower room and the machine room,
A heat dissipating fin in which a plurality of fins are arranged in a vertical direction so as to protrude from the machine room to the blower room, and a fin cover that surrounds a part of the heat dissipating fin and has a duct shape so as to allow air to pass therethrough. ,
One of the outside air passes between the plurality of fins on the machine room side from the outside air introduction port, is guided to the fin cover, passes through the plurality of fins on the fan room side, and reaches the blower room. the outdoor unit other characterized by passing Rukoto between the plurality of fins of the blower chamber side is introduced into the blower chamber through the heat exchanger. In those described in claim 1, wherein the heat dissipating fins, the outdoor unit, wherein the plurality of fins has been base parallel horizontally.   2. The fin cover according to claim 1, wherein the fin cover has an opening on the blower fan side of the radiating fin, and the outside air introduced from the outside air inlet through the opening and the heat exchanger. The outdoor unit is arranged to be mixed with the outside air introduced into the blower chamber. In those described in claim 1, wherein the heat dissipating fins, the outdoor unit the machine chamber side has a bottom surface became flat, the plurality of fins, characterized in that it is upright with respect to the bottom surface. In those described in claim 1, wherein the heat radiating fins has a bottom surface which becomes the plate to the machine chamber side, wherein the plurality of fins are upright with respect to the bottom surface, the plurality of fins are the machine room And an outdoor unit that straddles the blower chamber.

Images