JP2022163430A - Outdoor unit - Google Patents

Abstract

An outdoor unit is provided in which a waterproof structure can be provided between a heat exchange room and a machine room.
A control box (10) having two flange portions (11) with edges (11a) facing each other, a plate-shaped substrate (21), and a heat dissipation device provided with a gap (G) in an out-of-plane direction with respect to an installation surface of the substrate (21). A substrate assembly 20 having fins 23 , and the substrate assembly 20 is provided in the control box 10 with each flange portion 11 interposed in a gap G between the substrate 21 and the heat radiation fins 23 .
[Selection drawing] Fig. 5

Description

TECHNICAL FIELD The present disclosure relates to an outdoor unit provided in a domestic air conditioner.

2. Description of the Related Art In an outdoor unit provided in a domestic air conditioner, a circuit board for control is provided between a heat exchange chamber and a machine room.

When the board fails, it is necessary to replace the board on site. However, since the board is connected to parts such as a compressor and an electromagnetic valve by wiring and is surrounded by a plurality of panels, it takes time and effort to attach and detach the board. Therefore, it is preferable to assemble the substrate with a simple structure to improve the workability of attachment and detachment.

In this respect, for example, Patent Document 1 discloses a configuration in which a substrate and a heat sink are integrated with a substrate holder so that they can be drawn upward along a guide rail.

JP 2012-241939 A

By the way, in such a circuit board structure, rainwater or the like that enters the heat exchange chamber from the outside of the outdoor unit may be repelled toward the machine chamber by the rotating fan. If rainwater enters the machine room side and the rainwater touches the board, it may cause a failure.

The present disclosure has been made in view of such circumstances, and an object thereof is to provide an outdoor unit capable of providing a waterproof structure between a heat exchange chamber and a machine chamber.

In order to solve the above problems, the outdoor unit of the present disclosure employs the following means.
That is, an outdoor unit according to an aspect of the present disclosure includes a housing having two flange portions whose edges face each other, a plate-like substrate, and a gap in the out-of-plane direction with respect to the installation surface of the substrate. a substrate assembly having components provided thereon, wherein the substrate assembly is provided on the housing with each of the flange portions interposed in the gap between the substrate and the components. there is

According to the present disclosure, a waterproof structure can be provided between the heat exchange chamber and the machine chamber.

1 is a perspective view of an outdoor unit according to an embodiment of the present disclosure; FIG. Fig. 3 is a perspective view of the outdoor unit with the top panel removed; Fig. 3 is a perspective view of the outdoor unit with the top panel and the lid removed; FIG. 3 is a perspective view of the control box with the board assembly attached; FIG. 5 is a cross-sectional view along the cutting line VV shown in FIG. 4; 1 is a perspective view of a board assembly; FIG. FIG. 5 is a partially enlarged view of FIG. 4; FIG. 8 is a plan view of FIG. 7 ; It is a top view which shows the modification of a board|substrate assembly.

An outdoor unit according to an embodiment of the present disclosure will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the outdoor unit 1 includes an outdoor unit housing 31, a top panel 32, an outdoor heat exchanger 34, a fan 35, a control box (housing) 10, and a board assembly 20. .

As shown in FIG. 2, the outdoor unit housing 31 is a box-shaped member with an open top.
A blowout port 31 a is formed on the front surface of the outdoor unit housing 31 . The blowout port 31a has a substantially circular shape, and is a portion through which air after heat exchange is blown out.

As shown in FIG. 1 , a top panel 32 is attached to the top of the outdoor unit housing 31 . The top panel 32 is a plate-like member and closes the open top of the outdoor unit housing 31 .

As shown in FIG. 2 , a heat exchange chamber 41 and a machine chamber 42 are defined inside the outdoor unit housing 31 .

Devices such as an outdoor heat exchanger 34 and a fan 35 are installed in the heat exchange chamber 41 .
The outdoor heat exchanger 34 is a heat exchanger formed in a substantially L shape from the left side surface to the rear surface inside the outdoor unit housing 31 . A suction port (not shown) is formed in the outdoor unit housing 31 on the back side of the outdoor heat exchanger 34 .
The fan 35 is arranged inside the outdoor unit housing 31 so as to face the outlet 31a. The fan 35 is rotationally driven by an electric motor (not shown). As a result, the air outside the outdoor unit 1 is taken into the heat exchange chamber 41 through the inlet, and the air that has undergone heat exchange in the outdoor heat exchanger 34 is blown out through the outlet 31a.

On the other hand, in a machine room 42 adjacent to the heat exchange room 41, devices such as a compressor, an expansion valve, and an electromagnetic valve (not shown) are installed.

As shown in FIGS. 2 and 3, a control box 10 is installed between the heat exchange chamber 41 and the machine chamber 42 .
A lid 33 is provided above the control box 10 (see FIG. 2), and by removing it, the control box 10 and the board assembly 20 can be easily accessed (see FIG. 3).

As shown in FIGS. 4 and 5, on both sides of the control box 10, flanges 11 having edges 11a are formed.
The edges 11a extend in the vertical direction (vertical direction shown in the figure) and face each other in the horizontal direction. At this time, the distance between the edges 11a (the width dimension of the opening) is Wf.

A substrate assembly 20 as shown in FIG. 6 is attached to the control box 10 constructed in this way.
The board assembly 20 has a board 21 , a bracket 22 and heat radiation fins (components) 23 .

The board 21 is a plate-like circuit board, and various electronic components required for control and operation are mounted on its mounting surface.
The dimension of the substrate 21 in the width direction (the direction that coincides with the horizontal direction) is greater than the distance (width Wf) between the flange portions 11 .
Note that the mounting surface is the surface of the substrate 21 on the side of the machine room 42 .

The bracket 22 is a member provided on the installation surface of the substrate 21 and is a member for attaching the heat radiating fins 23 to the substrate 21 .
The widthwise dimension of the bracket 22 is smaller than the width Wf.
The installation surface is the surface of the substrate 21 on the side of the heat exchange chamber 41 and the surface opposite to the mounting surface.

The radiation fins 23 are metal members for cooling the substrate 21 . The widthwise dimension (width Wh) of the radiation fins 23 is larger than the width Wf.
The radiation fins 23 are attached to the mounting surface of the substrate 21 via the brackets 22 . Therefore, the radiation fins 23 are separated from the installation surface by the thickness of the bracket 22 in the out-of-plane direction of the installation surface. That is, the bracket 22 creates a gap G between the radiation fins 23 and the substrate 21 in the regions on both sides of the bracket 22 .
Note that the out-of-plane direction is the direction of the normal to the plane.

As shown in FIGS. 5, 7 and 8, the board assembly 20 is attached to the control box 10 with the flange portion 11 inserted into the gap G. As shown in FIG. That is, the substrate assembly 20 is attached to the control box 10 with the flange portion 11 interposed between the substrate 21 and the heat radiation fins 23 .
As a result, the control box 10 to which the substrate assembly 20 is attached has a three-layer structure composed of the radiation fins 23, the flange portion 11 and the substrate 21. As shown in FIG.

This triple structure functions like a labyrinth structure at the boundary between the control box 10 and the board assembly 20 . As a result, even if water flies from the heat exchange chamber 41, the water is blocked to reduce the possibility of water entering the inside of the control box 10 (machine room 42 side).

In the control box 10 and the substrate assembly 20 configured as described above, the gap G between the substrate 21 and the radiation fins 23 functions like a guide groove for the flange portion 11 . Therefore, the board assembly 20 can be slid along the flange portion 11 . This allows the operator to easily attach/detach the board assembly 20 to/from the control box 10 .

In addition, another flange portion may be provided so as to connect the lower end of one flange portion 11 and the lower end of the other flange portion 11 . In this case, the other flange portion extends horizontally. The other flange portion is interposed between the substrate 21 and the radiating fins 23 in the same manner as the flange portion 11 . As a result, the waterproof structure can be constructed even with other flange portions.
Also, another flange portion may be brought into contact with the bottom portion of the bracket 22 . This allows the substrate assembly 20 to be vertically positioned.

This embodiment has the following effects.
It has a control box 10 having two flanges 11 whose edges 11a are opposed to each other, a plate-like substrate 21, and heat radiation fins 23 provided with a gap G in the out-of-plane direction with respect to the mounting surface of the substrate 21. The substrate assembly 20 is provided in the control box 10 with each flange portion 11 interposed in the gap G between the substrate 21 and the heat radiation fins 23, so that the heat radiation fins 23 A triple structure is formed in which the radiation fins 23, the flange portion 11, and the substrate 21 are arranged in order from the side. As a result, even if water flies from the heat exchange chamber 41 side, the possibility of the water entering the machine chamber 42 side can be reduced. In other words, between the heat exchange chamber 41 and the machine chamber 42, a water impermeable structure can be provided by a triple structure composed of the radiation fins 23, the flange portion 11 and the substrate 21. FIG.

In addition, since the edge 11a of each flange portion 11 extends in the vertical direction, the flange portion 11 is interposed in the gap G between the substrate 21 of the substrate assembly 20 and the radiation fins 23 and is slid in the vertical direction. The substrate assembly 20 can be attached to and detached from the control box 10 by simply

In addition, the control box 10 has another flange portion connected to the two opposing flange portions 11, and the control box 10 is mounted in a state in which the other flange portion is interposed in the gap G between the substrate 21 and the radiation fins 23. Since the substrate assembly 20 is provided at 10, the waterproof structure can be constructed by other flange portions.

Also, for example, when the two flange portions 11 extend in the vertical direction, the other flange portion extends in the horizontal direction so as to connect the lower ends of the respective flange portions 11 . At this time, the substrate assembly 20 can be vertically positioned by bringing the bottom portion of the bracket 22 into contact with another flange portion.

Moreover, since the gap G is formed by the combination of the substrate 21 and the heat radiation fins 23, the heat radiation fins 23, which have been conventionally provided, can be used as a member for constructing the waterproof structure.

[Modification]
The component forming the gap G is not limited to the combination of the board 21 and the heat radiation fins 23 .
For example, as shown in FIG. 9, the shape of the bracket 22 may be modified to form the gap G by combining the substrate 21 and the bracket 22 .

One embodiment explained as above is grasped as follows, for example.
That is, an outdoor unit (1) according to one aspect of the present disclosure includes a housing (10) having two flange portions (11) with edges (11a) facing each other, a plate-like substrate (21), and , a substrate assembly (20) having a component (23) provided with a gap (G) in an out-of-plane direction with respect to the mounting surface of the substrate, wherein the substrate and the component The substrate assembly is provided in the housing with the flange portions interposed in the gaps between the substrate assemblies.

According to the outdoor unit according to this aspect, a housing having two flange portions facing each other, a plate-like substrate, and a configuration provided with a gap in the out-of-plane direction with respect to the installation surface of the substrate and a board assembly having parts, wherein the board assembly is provided in the housing with each flange part interposed in a gap between the board and the component parts. A three-layer structure is constructed with the part, the flange portion, and the substrate. As a result, even if water flies from the side of the components (for example, the side of the heat exchange chamber), the possibility of the water entering the inside of the housing (for example, the side of the machine chamber) can be reduced. In other words, between the heat exchange chamber and the machine chamber, a water impermeable structure can be provided by a triple structure composed of the components, the flange portion and the base plate.

Further, in the outdoor unit according to one aspect of the present disclosure, the edge portion of each flange portion extends in the vertical direction.

According to the outdoor unit of this aspect, since the edge of each flange portion extends in the vertical direction, the flange portion intervenes in the gap between the substrate and the components of the substrate assembly to extend vertically. The substrate assembly can be attached to and detached from the housing simply by sliding it.

Further, in the outdoor unit according to one aspect of the present disclosure, the housing has another flange portion connected to the two opposing flange portions, and the gap between the substrate and the component is The substrate assembly is provided in the housing with the other flange portion interposed therebetween.

According to the outdoor unit according to this aspect, the housing has the other flange portion connected to the two opposing flange portions, and the other flange portion is interposed in the gap between the substrate and the component. Since the housing is provided with the substrate assembly, the water-impervious structure can be configured by other flange portions.

Also, for example, when two flange portions extend vertically, the other flange portion extends horizontally so as to connect the lower ends of the respective flange portions. At this time, the substrate assembly can be positioned in the vertical direction by bringing the bottom portions of the components constituting the substrate assembly into contact with the other flange portion.

Moreover, in the outdoor unit according to one aspect of the present disclosure, the component is a radiation fin (23).

According to the outdoor unit according to this aspect, since the component is the radiation fin, the conventionally provided component (radiation fin) can be used as a member for configuring the waterproof structure.

1 outdoor unit 10 control box (casing)
11 Flange portion 11a Edge 20 Board assembly 21 Board 22 Bracket 23 Radiation fin (component)
31 outdoor unit housing 31a outlet 32 top panel 33 lid 34 outdoor heat exchanger 35 fan 41 heat exchange chamber 42 machine room

Claims (4)

a housing having two flange portions whose edges face each other;
A substrate assembly having a plate-shaped substrate and components provided with a gap in an out-of-plane direction with respect to the mounting surface of the substrate;
with
The outdoor unit, wherein the substrate assembly is provided in the housing with each of the flange portions interposed in the gap between the substrate and the component. The outdoor unit according to claim 1, wherein each of the flange portions has the edge extending in the vertical direction. The housing has another flange connected to the two opposing flanges,
3. The outdoor unit according to claim 1, wherein the substrate assembly is provided in the housing with the other flange interposed in the gap between the substrate and the component. 4. The outdoor unit according to any one of claims 1 to 3, wherein the component is a radiation fin.

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