JP2024060635A - Outdoor unit - Google Patents

Abstract

To provide an outdoor unit which prevents penetration of water from a blast room side to a machine room side without requiring a complicated structure and without increasing the number of components.SOLUTION: An electric component attachment plate 200 includes: a machine room side wall part 211 having a wall surface at a machine room 36 side; a blast room side wall part 212 having a wall surface at a blast room 35 side; a contact surface part 213 which is located between the machine room side wall part 211 and the blast room side wall part 212 and comes into contact with a first flange part 131 and a second flange part 141; engagement parts having respective recessed parts each of which comprises the machine room side wall part 211, the blast room side wall part 212, and the contact surface part 213, which engage so as to cover a corresponding one of the first flange part 131 and the second flange part 141, and are open downward; an attachment part 214 extending from the machine room side wall part 211 to the machine room 36 side; a groove part 215 for causing water to flow to an upper part of the contact surface part 213; water receiver hole parts 216 for causing water which has flowed to the groove part 215 to flow to the blast room 35 side; and a water receiver surface part 217 for causing water on an upper surface of the attachment part 214 to flow to the water receiver hole parts.SELECTED DRAWING: Figure 4

Description

This invention relates to an outdoor unit equipped with electrical equipment inside.

Conventionally, this type of outdoor unit has been equipped with a control box with a control board installed inside, as described in Patent Document 1, and it has been known that this control box prevents water from entering the machine room by acting as a roof or mousetrap, preventing water from being splashed away by the rotation of the fan.

JP 2011-94926 A

However, in the above conventional system, while the control box can prevent water from entering the machine room, if the control box is not provided or is located in a different location, a new structure is needed to prevent water from entering the machine room.

In order to solve the above problem, in claim 1 of the present invention, an outdoor unit having a substantially box-shaped housing, a partition wall dividing the interior of the housing into a machine chamber located on one side in the left-right direction and equipped with a compressor and an expansion valve, and an air blower chamber located on the other side in the left-right direction and equipped with a fan and a heat exchanger, and an electrical equipment mounting plate arranged on the partition wall and for mounting electronic components to a lower portion, the partition wall comprises a first partition section extending in a first predetermined direction intersecting with the vertical direction, a first flange section provided on the first partition section so as to protrude toward the air blower chamber, a second partition section extending in a second predetermined direction intersecting with the vertical direction and different from the first predetermined direction, and a second flange section provided on the second partition section so as to protrude toward the air blower chamber. The electrical equipment mounting plate has a machine room side wall having a wall surface on the machine room side, a blower room side wall having a wall surface on the blower room side, a contact surface portion between the machine room side wall portion and the blower room side wall portion that contacts the first flange portion and the second flange portion, an engagement portion having a recess that opens downward and engages to cover the first flange portion and the second flange portion, an attachment portion extending from the machine room side wall portion to the machine room side, a groove portion that allows water to flow to the upper part of the contact surface portion, a water receiving hole portion that allows water that has flowed to the groove portion to flow to the blower room side, and a water receiving surface portion that allows water on the upper surface of the attachment portion to flow to the water receiving hole.

In addition, in claim 2, the lower end of the machine room side wall has a first inclined portion that slopes downward toward the first predetermined direction, and a second inclined portion that slopes downward toward the second predetermined direction.

According to this invention, an electrical equipment mounting plate is placed on the partition wall separating the machine room and the blower room, which makes it possible to prevent water from entering the compressor and expansion valve installed in the machine room from the blower room side.

FIG. 1 is a front view showing the overall appearance of an outdoor unit according to an embodiment of the present invention; A perspective view from the right front showing the overall appearance of the outdoor unit FIG. 1 is a perspective view showing the internal structure of the outdoor unit housing. FIG. 4 is an enlarged perspective view showing the main parts of the electrical equipment mounting plate and the vertical partition wall in the structure shown in FIG. 3 . FIG. 5 is an exploded perspective view of the structure shown in FIG. A perspective view from the right front, a top view, and a front view showing the detailed structure of the vertical partition wall A view roughly corresponding to the view of the arrow Q in FIG. A view roughly corresponding to the view of the arrow R in FIG. A perspective view showing the overall structure of the electrical equipment mounting plate, from a slightly upper front right side and a slightly lower front right side. A perspective view showing the overall structure of the electrical equipment mounting plate, from a slightly upper rear right side and a slightly lower rear right side. Top view and front view showing the overall structure of the electrical equipment mounting plate FIG. 13 is a perspective view showing an engagement behavior between an electrical equipment mounting plate and a vertical partition wall; FIG. 13 is a perspective view showing an engagement behavior between an electrical equipment mounting plate and a vertical partition wall; 14(a) and 14(b) are a top view and a cross-sectional view taken along line A-A in FIG. 14(a), showing the electrical equipment mounting plate and the vertical partition wall in an engaged state with each other; FIG. 11 is a front view showing an electrical equipment mounting plate and a vertical partition wall according to another embodiment of the present invention.

One embodiment of the present invention will be described below with reference to Figures 1 to 18.

<Outline of outdoor unit>
The external structure and the overall schematic internal structure of the outdoor unit according to this embodiment will be described with reference to Figs.

In these Figures 1 to 3, the outdoor unit 2 is installed outside a suitable building such as a house, and is connected to an indoor unit (not shown) installed indoors via piping (not shown). The outdoor unit 2 has a housing 31 formed in a generally box shape (in other words, a hollow rectangular parallelepiped). The housing 31 has an upper cover 31a located on the upper side of the generally box shape, a front panel 31b located on the front side of the generally box shape, a right side plate 31d located on one side in the left-right direction of the generally box shape (the right side in this example), a left side plate (not shown) located on the other side in the left-right direction of the generally box shape (the left side in this example), and a bottom plate 31f (see Figure 3) located on the lower side of the generally box shape.

A vertical partition wall 100 is provided inside the housing 31. As a result, inside the housing 31, the right side of the vertical partition wall 100 is partitioned as a machine room 36, and the left side of the vertical partition wall 100 is partitioned as a ventilation room 35. An electrical equipment mounting plate 200 is disposed above the vertical partition wall 100, and an electrical equipment (not shown) such as a capacitor can be attached to the lower part of the electrical equipment mounting plate 200.

The air blowing chamber 35 houses an air heat exchanger 8 (corresponding to a heat exchanger) that exchanges heat between the refrigerant and outside air, and an outdoor fan 10 (corresponding to a fan). The air heat exchanger 8 has a right end plate 8R (see FIG. 3) for attaching its right end to the housing 31, and a left end plate 8L (see FIG. 3) for attaching its left end to the housing 31. The air heat exchanger 8 in this example is a fin tube type heat exchanger of a panel body that can pass air in its thickness direction, and is arranged on the rear (back) side and left side side of the air blowing chamber 35 over almost the entire height of the air blowing chamber 35. The back of the air heat exchanger 8 also serves as the back part of the housing 31.

In this example, the outdoor fan 10 is an axial fan that has a rotating shaft 10b driven by a drive motor (not shown) and an impeller 10a fixed to the rotating shaft 10b, and blows air in a direction from the rear to the front of the outdoor unit 2 (from the upper right to the lower left in Figure 3).

The machine room 36 is a substantially closed space surrounded by the front panel 31b, the right side plate 31d, the bottom plate 31f, and the vertical partition wall 100. The machine room 36 contains a compressor 7 that compresses the refrigerant, a compressor terminal 7A to which wiring related to the drive of the compressor 7 is connected, a capillary tube 9 that functions as an expansion valve to reduce the pressure and expand the refrigerant, a discharge temperature sensor that detects the discharge temperature of the refrigerant discharged from the compressor 7, and a heat exchange sensor that detects the temperature of the refrigerant flowing between the air heat exchanger 8 and the expansion valve. In this example, the compressor 7 is located in the machine room 36 near the right side plate 31d, that is, closer to the right side plate 31d than the vertical partition wall 100, as shown in FIG. 6.

<Main parts of the embodiment>
The essential parts of the outdoor unit 2 of this embodiment are the structures of the vertical partition wall 100 and the electrical equipment mounting plate 200. The details will be described below in due order.

<Vertical partition wall structure>
As shown in Figures 4 and 3, the vertical partition wall 100 has a vertical wall portion 130 (corresponding to a first partition portion) that intersects the vertical direction and extends from the inside of the housing 31 toward the front end direction of the front panel 31b side (corresponding to a first specified direction X1), and a horizontal wall portion 140 (corresponding to a second partition portion) that extends in a direction intersecting the front-to-rear direction (corresponding to a second specified direction X2) from the inside of the outdoor unit of the vertical wall portion 130 to the vicinity of the right end plate 8R of the air heat exchanger 8 so as to face the air heat exchanger 8.

<Vertical wall section>
As shown in Figures 5 to 8, the vertical wall portion 130 has a partition plate portion 130P arranged so that its surface direction is approximately in the front-to-rear direction, a first flange portion 131 provided on an upper stage portion 130A and a lower stage portion 130B located at the upper end of the partition plate portion 130P, and a mounting plate 135 located at the front end and having a screw hole through which a screw for fixing the vertical wall portion 130 to the housing 31 is inserted.

The first flange portion 131 is arranged to protrude to the left (in other words, toward the air blower chamber 35).

<Side wall>
As shown in Figures 5 to 8, the horizontal wall portion 140 has a partition plate portion 140P arranged so that its surface direction is generally from the front left to the rear right, a second flange portion 141 provided on a stepped portion 140A located at the upper end of the partition plate portion 140P, and a mounting plate 145 located at the end of the horizontal wall portion 140 on the side opposite the vertical wall portion 130 and having a screw hole through which a screw can be inserted to fix the horizontal wall portion 140 to the end plate 8R.

The second flange portion 141 is arranged to protrude to the left (in other words, toward the air blowing chamber 35).

<Structure of electrical equipment mounting plate>
As shown in Figures 9, 10, and 11, the electrical equipment mounting plate 200 is composed of, along the vertical direction of the vertical wall portion 130 and the horizontal wall portion 140, a machine chamber side wall portion 211 which is the wall surface on the machine chamber 36 side, a blower chamber side wall portion 212 which is the wall surface on the blower chamber 35 side, a contact surface portion 213 where the vertical wall portion 130 and the horizontal wall portion 140 contact between the machine chamber side wall portion 211 and the blower chamber side wall portion 212, a mounting portion 214 extending from the machine chamber side wall portion 211 to the machine chamber 36 side, a groove portion 215 which is opened on the back surface of the contact surface portion 213 to allow water to fall, a water receiving hole portion 216 which drains water that falls from the groove portion 215 to the blower chamber 35 side, and a water receiving surface portion 217 which drains water that has accumulated on the upper surface of the mounting portion 214 into the groove portion 215.

The recess that opens downward between the machine room side wall 211, the blower chamber side wall 212, and the contact surface 213 and covers the first flange 131 is the first recess C1, and the recess that opens downward between the machine room side wall 211, the blower chamber side wall 212, and the contact surface 213 and covers the second flange 141 is the second recess C2.

<Engagement between electrical equipment mounting plate and vertical partition wall>
The engagement between the electrical equipment mounting plate 200 and the vertical partition wall 100 configured as described above will be described with reference to Figures 12 and 13. As shown in Figures 12 and 13 and Figures 9 and 10, the contact surface portion 213 of the first recess C1 (more specifically, the lower surface of the contact surface portion 213 on the vertical wall portion 130 side) abuts against the upper surface of the first flange portion 131 of the vertical partition wall 100. Moreover, the contact surface portion 213 of the second recess C2 (more specifically, the lower surface of the contact surface portion 213 on the horizontal wall portion 140 side) abuts against the upper surface of the second flange portion 141 of the vertical partition wall 100.

As a result, as shown in FIG. 14, the first recess C1 engages to cover the upper surface of the upper stage portion 130A, the lower stage portion 130B, and the first flange portion 131 as a whole, and the second recess C2 engages to cover the upper surface of the stepped portion 140A and the second flange portion 141 as a whole.

Effects of the embodiment
In this manner, in this embodiment, rain or other water that enters through the front panel 31b may be repelled by the outdoor fan 10 and splash onto the vertical partition wall 100 side, so as a first water ingress prevention structure, the vertical partition wall 100 and the blower chamber side wall portion 212 act as a wall to prevent water from ingress from the blower chamber 35 side to the machine chamber 36 side.

As a second water ingress prevention structure, the water receiving surface 217 prevents water that is repelled by the outdoor fan 10 and drips from the upper cover 31a from ingressing into the machinery room 36. At this time, the water that drips onto the water receiving surface 217 flows into the groove 215, and is then directed through the water receiving hole 216 to the blower chamber 35 side, thereby preventing water from ingressing from the blower chamber 35 side to the machinery room 36 side.

Therefore, in an outdoor unit that does not have a control box, the blower chamber side wall 212 prevents water from scattering due to the outdoor fan or wind, and water seeping in due to dripping from the upper cover 31a is drained from the water receiving surface 217 through the groove 215 and the water receiving hole 216 to the blower chamber 35 side, thereby reliably preventing water from seeping in the machine chamber 36.

<Third water ingress prevention structure for machine room side wall>
Next, the detailed structure of the third water-proof structure that protects the equipment in the machine room 36 from water that has seeped into the machine room 36 through the contact surface between the first recess C1 and the first flange portion 131, and the contact surface between the second recess C2 and the second flange portion 141 will be described with reference to Figure 15.

218 is a first inclined portion that inclines the lower edge of the machine room side wall portion 211 on the vertical wall portion 130 side toward the first specified direction X1, and 219 is a second inclined portion that inclines the lower edge of the machine room side wall portion 211 on the horizontal wall portion 140 side toward the second specified direction X2.

The water that has slipped around has the tendency to temporarily adhere to the bottom edge of the machine room side wall 211 due to surface tension, and the tendency for the water to mainly flow from top to bottom. Taking advantage of this, the first inclined portion 218 and the second inclined portion 219 guide the water to the upper cover 31a side or the right side panel 31d side of the housing 31.

In this way, the first inclined portion 218 and the second inclined portion 219 prevent water that has seeped into the machine room 36 from the contact surface between the first recess C1 and the first flange portion 131, and the contact surface between the second recess C2 and the second flange portion 141 from entering the center of the machine room 36, and the water can be drained outside the housing 31 through the drainage portion of the bottom plate 31f by running along the front panel 31b and right side plate 31d of the housing 31.

The present invention is not limited to the above-described embodiment, and the configuration can be changed as appropriate without departing from the spirit of the invention. For example, the configurations described in the above-described embodiment can be combined or selected as appropriate, and part of the configuration of the above-described embodiment can be added, deleted, or replaced.

2 Outdoor unit 7 Compressor 8 Air heat exchanger (heat exchanger)
31 Housing 35 Blower chamber 36 Machine room 100 Vertical partition wall (partition wall)
130 Vertical wall portion (first partition portion)
130A Upper portion 130B Lower portion 131 First flange portion 140 Side wall portion (second partition portion)
141 Second flange portion 200 Electrical equipment mounting plate 211 Machine chamber side wall portion 212 Air blower chamber side wall portion 213 Contact surface portion 214 Mounting portion 215 Groove portion 216 Water receiving hole portion 217 Water receiving surface portion 218 First inclined portion 219 Second inclined portion C1 First recess (first engagement portion)
C2 Second recess (second engagement portion)
X1: First predetermined direction X2: Second predetermined direction

Claims (2)

A substantially box-shaped housing;
a partition wall dividing the inside of the housing into a machine chamber located on one side in the left-right direction and equipped with a compressor and an expansion valve, and an air blower chamber located on the other side in the left-right direction and equipped with a fan and a heat exchanger;
an electrical equipment mounting plate disposed on the partition wall and for mounting electronic components thereon,
The partition wall is
A first partition portion extending in a first predetermined direction intersecting the vertical direction;
a first flange portion provided in the first partition portion so as to protrude toward the air blowing chamber;
a second partition portion that intersects with the vertical direction and extends in a second predetermined direction different from the first predetermined direction;
A second flange portion is provided in the second partition portion so as to protrude toward the air blowing chamber,
The electrical equipment mounting plate is
a machine room side wall portion having a wall surface on the machine room side;
A blower chamber side wall portion having a wall surface on the blower chamber side;
a contact surface portion between the machine chamber side wall portion and the blower chamber side wall portion, the contact surface portion being in contact with the first flange portion and the second flange portion;
an engagement portion including the machine chamber side wall portion, the blower chamber side wall portion, and the contact surface portion, the engagement portion having a recess that opens downward and engages with the first flange portion and the second flange portion so as to cover the first flange portion and the second flange portion, respectively;
an attachment portion extending from the machine compartment side wall portion toward the machine compartment;
A groove for allowing water to flow on an upper portion of the contact surface portion;
A water receiving hole portion that directs water flowing into the groove portion toward the air blowing chamber;
a water receiving surface portion that allows water on an upper surface of the mounting portion to flow into the water receiving hole;
An outdoor unit comprising: The lower end of the machine room side wall portion is
a first inclined portion inclined downward toward the first predetermined direction;
2. The outdoor unit according to claim 1, further comprising a second inclined portion that is inclined downward toward the second predetermined direction.

Images