JP2015127624A - Outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a sufficient air amount necessary for heat exchange in an outdoor heat exchanger by smoothly flowing airflow flowing into a bell mouth of a blower from a wall surface of a separator of an outdoor unit.SOLUTION: An outdoor unit 100 includes: a machine chamber 100b for at least accommodating a compressor 9; a blower chamber 100a for at least having a heat exchanger and a bell mouth 1a of a blower 6 on two surfaces opposing to each other; and a separator 4 for partitioning between the machine chamber 100b and the blower chamber 100a. In the separator 4, one end is arranged on the heat exchanger side, and the other end is arranged on the bell mouth 1a side, and the separator is formed by three or more configuring surfaces having different angles between the one end and the other end.

Description

  The present invention relates to an outdoor unit of an air conditioner including a separator (partition plate) that separates a blower chamber and a machine chamber.

  The role of the separator of the outdoor unit of the air conditioner is to separate the blower chamber from the machine room, and the outside air sucked from the separator side of the outdoor heat exchanger along the wall surface of the separator on the blower chamber side. To flow in the direction. Therefore, it is possible to supply a sufficient amount of outside air to the entire surface of the outdoor heat exchanger by flowing an air flow smoothly from the wall surface of the separator into the bell mouth.

  The separator of the conventional outdoor unit is an inclined surface that is inclined with respect to the front panel on the blow-out side to which the bell mouth of the blower is attached as viewed from the upper surface of the outdoor unit, and a curved line from the inclined surface to the front body panel. On the other hand, it has the structure of 2 surfaces which have a perpendicular | vertical continuous vertical surface (for example, refer patent document 1, 2).

JP 2013-224814 A (refer to the separator 14 in FIG. 4) JP 2013-133972 A (see the partition plate 8 in FIG. 3)

In the configuration of the conventional outdoor unit (see Patent Document 1), the vertical surface of the separator extends to the upstream side of the airflow from the inflow surface of the bell mouth of the blower. Then, outside air after heat exchange flows between the bell mouth and the vertical surface of the separator, the smooth air flow into the bell mouth is obstructed, and turbulence is generated in the bent part, thereby reducing the air volume. Reduction and noise occurred, and the heat exchange efficiency was reduced.
Moreover, in the configuration of the outdoor unit in which the vertical surface of the separator is close to the bell mouth side of the blower (see Patent Document 2), the airflow flows into the bell mouth relatively smoothly. As a result, the turbulent flow was generated in the same manner, and the air volume was reduced and noise was generated.

  The present invention has been made to solve the above-described problems, and smoothly flows airflow flowing from the wall surface of the separator of the outdoor unit into the bell mouth of the blower and is necessary for heat exchange with the outdoor heat exchanger. The purpose is to ensure sufficient air flow.

  An outdoor unit according to the present invention includes a machine room that houses at least a compressor, a blower room having a heat exchanger and a bell mouth of a blower on at least two opposing surfaces, and a separator that partitions between the machine room and the blower room. The separator has three or more configurations in which one end is disposed on the heat exchanger side and the other end is disposed on the bell mouth side, and the angle between the one end and the other end is different. It is formed by a surface.

  According to the outdoor unit according to the present invention, the outside air sucked from the outdoor heat exchanger side is smoothly guided to the inflow surface of the bell mouth, so that the generation of noise and the decrease in the air volume are minimized, and the separator has three surfaces. Heat exchange efficiency in the outdoor heat exchanger can be improved by simple processing bent as described above.

1 is a perspective view of an outdoor unit according to Embodiment 1. FIG. It is sectional drawing in the planar view of the outdoor unit which concerns on Embodiment 1. FIG. 1 is a perspective view of a machine room of an outdoor unit according to Embodiment 1. FIG. 1 is a schematic diagram of a refrigeration cycle including an outdoor unit according to Embodiment 1. FIG. 3 is a perspective view of a separator of the outdoor unit according to Embodiment 1. FIG. 3 is a top plan view of the separator of the outdoor unit according to Embodiment 1. FIG. It is sectional drawing in the planar view of the machine room of the outdoor unit which concerns on Embodiment 1. FIG. 6 is a top plan view of a separator of an outdoor unit according to Embodiment 2. FIG.

Hereinafter, an outdoor unit according to the present invention will be described with reference to the drawings.
In addition, the structure demonstrated below is an example and the outdoor unit which concerns on this invention is not limited to such a structure.
Further, the illustration of the fine structure is simplified or omitted as appropriate.
In addition, overlapping or similar descriptions are appropriately simplified or omitted.

Embodiment 1 FIG.
The outline of the structure of the outdoor unit according to Embodiment 1 will be described with reference to FIGS.
1 is a perspective view of an outdoor unit according to Embodiment 1. FIG.
FIG. 2 is a cross-sectional view of the outdoor unit according to Embodiment 1 in plan view.
FIG. 3 is a perspective view of the machine room of the outdoor unit according to the first embodiment.
The interior of the outdoor unit 100 of the air conditioner is largely separated into a blower chamber 100a and a machine chamber 100b by a plate-like separator 4.
The casing of the outdoor unit 100 is formed with an outlet of the blower 6 and covers the L-shaped outer panel 1 that covers the blower chamber 100a, the side panel 2 that covers the side surface on the machine room 100b side, and the upper surface of the outdoor unit 100. And the top panel 3.

In the blower chamber 100a, an outdoor heat exchanger 5, a blower 6, a motor 7 for driving the blower, a motor support 8 for supporting the motor 7, and the like are provided.
The machine room 100b houses a compressor 9, a compressor muffler 10, a four-way valve 11, an electrical component box 12, refrigerant piping, and the like.
A bell mouth 1a is formed on the outer panel 1 in accordance with the outer periphery around which the blades of the blower 6 rotate. The bell mouth 1a has a ring shape and has a role of smoothly exhausting the air blown out by the blower 6 from the blower chamber to the outside.

In the outdoor unit 100 having such a configuration, when the motor 7 is driven and the blower 6 rotates, the outside air is sucked into the blower chamber 100a from the outdoor heat exchanger 5 side. And the outside air heat-exchanged with the refrigerant | coolant with the outdoor heat exchanger 5 passes through the air blower chamber 100a, is pushed out into the bell mouth 1a with the blade | wing of the air blower 6, and is exhausted outside the outdoor unit 100. .
Moreover, electric power is supplied to the electrical component box 12 of the outdoor unit 100 from an external power source, and the drive of the motor 7 and the compressor 9 is controlled.

Here is an overview of the refrigeration cycle of the air conditioner.
FIG. 4 is a schematic diagram of a refrigeration cycle including the outdoor unit according to Embodiment 1.
The air conditioner is mainly composed of a compressor 9, a four-way valve 11, an outdoor heat exchanger 5, an expansion valve 14, and an indoor heat exchanger 13, and these are connected by a refrigerant pipe to constitute a refrigeration cycle apparatus.

  When this refrigeration cycle apparatus is in cooling operation, the four-way valve 11 is operated with the flow path shown on the solid line side in FIG. The high-temperature and high-pressure gas refrigerant discharged from the compressor 9 on the refrigeration cycle apparatus is sent to the outdoor heat exchanger 5 through the four-way valve 11. At this time, the outdoor heat exchanger 5 functions as a condenser, and the gas refrigerant dissipates heat and liquefies. The liquefied liquid refrigerant passes through the expansion valve 14 and expands under reduced pressure, takes heat from the indoor air in the indoor heat exchanger 13 and vaporizes. At this time, the indoor heat exchanger 13 functions as an evaporator.

Thereafter, the gas refrigerant passes through the four-way valve 11, the compressor muffler 10, and the compressor 9, and changes again into a high-temperature and high-pressure gas refrigerant. The compressor muffler 10 serves to stabilize the flow rate of the refrigerant by storing a certain amount of gas refrigerant and flowing the refrigerant through the compressor 9.
The outdoor heat exchanger 5 and the indoor heat exchanger 13 are each provided with a blower that promotes heat exchange. The outdoor unit 100 sucks outside air from the outside of the outdoor unit 100 by the rotation of the blower 6 and is outside the room. Air is passed through the heat exchanger 5 to exchange heat between the outside air and the refrigerant.

  Next, when this refrigeration cycle apparatus is operated for heating, the four-way valve 11 is operated with the flow path shown on the broken line side in FIG. The high-temperature and high-pressure gas refrigerant discharged from the compressor 9 on the refrigeration cycle apparatus is sent to the indoor heat exchanger 13 via the four-way valve 11. At this time, the indoor heat exchanger 13 functions as a condenser, and the gas refrigerant radiates and liquefies. The liquefied liquid refrigerant passes through the expansion valve 14 and expands under reduced pressure, takes heat from the outside air in the outdoor heat exchanger 5 and vaporizes. At this time, the outdoor heat exchanger 5 functions as an evaporator.

  Thereafter, the gas refrigerant passes through the four-way valve 11, the compressor muffler 10, and the compressor 9, and changes again into a high-temperature and high-pressure gas refrigerant. Similarly to the cooling operation, the outside air is sucked from the outside of the outdoor unit 100 by the rotation of the blower 6 of the outdoor unit 100 and is passed through the outdoor heat exchanger 5 to exchange heat between the outside air and the refrigerant.

Next, the configuration of the separator 4 of the outdoor unit 100 according to Embodiment 1 will be described.
FIG. 5 is a perspective view of the separator of the outdoor unit according to the first embodiment.
6 is a top plan view of the separator of the outdoor unit according to Embodiment 1. FIG.
As shown in FIG. 2, the separator 4 is a plate-like member that separates the blower chamber 100a and the machine chamber 100b, and is formed by press-molding a steel plate. The separator 4 has an action of flowing outside air sucked from the separator 4 side of the outdoor heat exchanger 5 along the wall surface of the separator 4 on the blower chamber 100a side in the direction of the bell mouth 1a of the blower 6.

  The separator 4 according to the first embodiment is composed of three surfaces with different angles. As shown in FIG. 6, the three surfaces are formed by a first surface 4 a formed on the upstream side of the airflow at a position in contact with the outdoor heat exchanger 5, and continuously bent on the first surface 4 a. The second surface 4b and the third surface 4c formed by being continuously bent to the second surface 4b on the most downstream side of the airflow.

The first bent line 4d formed by bending the first surface 4a and the second surface 4b of the separator 4 and the second bent line 4e formed by bending the second surface 4b and the third surface 4c are: Both are configured to have a convex shape toward the blower chamber 100a when the outdoor unit 100 is viewed from above.
Further, if the angle formed by the first surface 4a and the front panel of the outer panel 1 is θ1, and the angle formed by the second surface 4b and the front panel of the outer panel 1 is θ2, the relationship θ1 <θ2 is established. .

  The angle formed between the third surface 4c and the front panel of the outer panel 1 is substantially vertical. That is, the three surfaces of the separator 4 are formed so that the relationship of θ1 <θ2 <θ3 is established. At this time, it is desirable that the inclination angle of the separator 4 is set so that θ1 is 30 ° ± 5 ° and θ2 is 80 ° ± 5 °.

  The first bent line 4d of the separator 4 is located between one end of the separator 4 on the outdoor heat exchanger 5 side and a virtual surface 1c passing through the inflow surface 1b of the bell mouth 1a in plan view as shown in FIG. doing. Moreover, the 2nd bending line 4e is located between the other end by the side of the front panel of the separator 4 and the virtual surface 1c which passes along the inflow surface 1b of the bellmouth 1a in planar view.

  According to the separator 4 configured as described above, the outside air sucked from the outdoor heat exchanger 5 side by a simple process that is bent along two bending lines from the first surface 4a to the third surface 4c is the inflow surface of the bell mouth 1a. Smooth guidance to 1b is possible. Moreover, since the 2nd bending line 4e is located in the downstream of the airflow rather than the inflow surface 1b of the bellmouth 1a, the airflow which flowed on the wall surface of the 2nd surface 4b peels in the 2nd bending line 4e part. Without being sucked into the bell mouth 1a smoothly. Therefore, the generation of noise and the decrease in the air volume can be minimized, and the heat exchange efficiency in the outdoor heat exchanger 5 can be improved.

Furthermore, since the second surface 4b is inclined with respect to the third surface 4c so as to be away from the blades of the blower 6, the second surface 4b is not easily affected by the turbulence of the air flow occurring on the outer periphery of the blades of the blower 6, and similarly noise It is possible to minimize the generation of air and a decrease in air volume, and the heat exchange efficiency in the outdoor heat exchanger 5 can be improved.
The separator 4 of the first embodiment has a three-surface structure with two bent lines because the processing cost is low, but it can also be a four-surface structure or more.

The layout of each device in the machine room 100b when the separator 4 according to Embodiment 1 is employed will be described with reference to FIG.
FIG. 7 is a cross-sectional view of the machine room of the outdoor unit according to Embodiment 1 in a plan view.
First, the compressor 9 having a large occupation area is arranged at a position facing the second surface 4b of the separator 4 on the front side of the machine room 100b. Next, the compressor muffler 10 is disposed at a position facing the first surface 4 a of the separator 4 at a position adjacent to the compressor 9. And the four-way valve 11 is arrange | positioned along the side surface panel 2, and refrigerant | coolant piping is connected to each apparatus.

With such a layout in the machine room 100b, the compressor 9 and the compressor muffler 10 have a positional relationship along the shape of the separator 4 as shown in FIG. 7, and the four-way valve 11 and the refrigerant pipe can be stored compactly. Extra space in the machine room 100b can be eliminated.
Therefore, by making the machine room 100b compact, it is possible to relatively secure the volume of the blower room 100a, increase the amount of outside air supplied to the outdoor heat exchanger 5, and improve the heat exchange efficiency.

Embodiment 2. FIG.
The separator 4 of the outdoor unit 100 according to the second embodiment is different from the separator 4 according to the first embodiment in that a guide unit 20 that guides the airflow is provided on the second surface 4b of the separator 4 according to the first embodiment. To do.

FIG. 8 is a top plan view of the separator of the outdoor unit according to the second embodiment.
As shown in FIG. 8, a guide portion 20 is formed on the second surface 4b of the separator 4 to guide the airflow in the direction of the inflow surface 1b of the bell mouth 1a. The guide portion 20 is erected such that the inclined surface 20a and the vertical surface 20b are directed from the surface of the second surface 4b to the inflow surface 1b of the bell mouth 1a.

As the cross-sectional shape of the inclined surface 20a, various shapes can be adopted as long as the airflow can be guided, such as a planar shape, a curved shape with a recessed center, and a curved shape with a swelled center.
Further, as the planar shape of the vertical surface 20b, a rectangle, an arc shape along the arc-shaped contour of the bell mouth 1a, or the like can be adopted.

By providing such a guide part 20 in the separator 4, it becomes possible to more reliably guide the outside air after the heat exchange flowing along the second surface 4b into the bell mouth 1a.
Therefore, the generation of noise and the decrease in the air volume can be minimized, and the heat exchange efficiency in the outdoor heat exchanger 5 can be improved.

Further, since the second surface 4b is inclined with respect to the third surface 4c so as to be away from the blades of the blower 6, it is the same as in the first embodiment. It is difficult to be influenced by the flow, it is possible to minimize the generation of noise and the reduction of the air volume, and the heat exchange efficiency in the outdoor heat exchanger 5 can be improved.
Further, as in the first embodiment, the machine room 100b is made compact so that the capacity of the blower room 100a is relatively secured, the amount of outside air supplied to the outdoor heat exchanger 5 is increased, and the heat exchange efficiency is improved. It becomes possible to make it.

  1 outer panel, 1a bell mouth, 1b inflow surface, 1c imaginary surface, 2 side panel, 3 top panel, 4 separator, 4a first surface, 4b second surface, 4c third surface, 4d first bent line, 4e 2nd bent line, 5 outdoor heat exchanger, 6 blower, 7 motor, 8 motor support, 9 compressor, 10 compressor muffler, 11 four-way valve, 12 electrical component box, 13 indoor heat exchanger, 14 expansion valve, 20 Guide part, 20a inclined surface, 20b vertical surface, 100 outdoor unit, 100a blower room, 100b machine room.

Claims (7)

An outdoor unit comprising at least a machine room for storing a compressor, a blower room having a heat exchanger and a bell mouth of a blower on at least two opposing surfaces, and a separator for partitioning the machine room and the blower room. There,
The separator has one end disposed on the heat exchanger side and the other end disposed on the bell mouth side, and is formed of three or more constituent surfaces having different angles between the one end and the other end. An outdoor unit characterized by that. The separator is configured in the order of a first surface, a second surface, and a third surface from the one end toward the other end, and a line of intersection between the first surface and the second surface is a first bent line, A line of intersection between the second surface and the third surface is folded as a second bend line,
2. The outdoor unit according to claim 1, wherein both the first bent line and the second bent line are formed in a convex shape on the blower chamber side.   If the angles formed by the front panel of the casing on which the bell mouth is formed and the first surface, the second surface, and the third surface are θ1, θ2, and θ3, respectively, the relationship of θ1 <θ2 <θ3 is established. The outdoor unit according to claim 2, wherein   The said 2nd bending line is formed between the front surface panel of the housing | casing in which the said bellmouth was formed, and the virtual surface which passes along the inflow surface of the said bellmouth. Outdoor unit.   The outdoor unit according to any one of claims 1 to 4, wherein a guide portion for guiding an airflow is provided on the separator on the bell mouth side.   The outdoor unit according to any one of claims 2 to 4, wherein the guide portion is formed on the second surface.   The outdoor unit according to claim 5 or 6, wherein the guide portion includes an inclined surface that guides an air flow, and the inclined surface has a curved cross section.

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