JP2009210155A - Outdoor unit of air conditioner - Google Patents

Abstract

An outdoor unit of an air conditioner that prevents rainwater scattered from a blower chamber from entering through a hole in a partition plate is provided.
In an outdoor unit 2, an internal space of a casing 20 is divided by a partition plate 28 into a machine room 20a in which an electrical component box 55 is disposed and a blower room 20b in which an outdoor fan 4 is disposed. . The electrical component box 55 is attached to the partition plate 28 by an electrical component box mounting plate 56. The electrical component box mounting plate 56 has a mounting claw 56a that is hooked to the partition plate 28, and the partition plate 28 has a claw insertion hole 28a into which the mounting claw 56a is inserted. On the electrical component box mounting plate 56, a hole closing portion 56b that covers the gap between the claw insertion hole 28a and the mounting claw 56a is integrally formed with the mounting claw 56a.
[Selection] Figure 5

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit of an air conditioner provided with an electrical component box disposed in a casing of the outdoor unit.

  The outdoor unit of the air conditioner includes a casing that houses a part of the vapor compression refrigeration circuit. The inside of the casing is divided into a blower room and a machine room by a partition plate, and an electrical component box is accommodated on the machine room side (see, for example, Patent Document 1). The electrical component box is attached to the partition plate via a sheet metal member, and the sheet metal member is provided with a claw that is caught in a hole provided in advance in the partition plate.

Since the outdoor unit is generally installed outdoors, it may naturally operate in wind and rain. In such a case, rainwater scattered from the blower room passes through the holes in the partition plate, There was a possibility of entering the electrical component box.
JP 2007-205627 A

  The subject of this invention is providing the outdoor unit of the air conditioning apparatus which prevented that the rain water which splashes from a fan room penetrate | invades from the hole of a partition plate.

  The outdoor unit of the air conditioner according to the first invention includes a heat exchanger that forms part of a vapor compression refrigeration circuit, a blower that applies outside air to the heat exchanger, an electrical component box, a casing, a partition plate, And an electrical component box mounting plate. The electrical component box incorporates at least a control unit that controls the blower. The casing houses a heat exchanger, a blower, and an electrical component box. The partition plate divides the internal space of the casing into a first space in which the electrical component box is disposed and a second space in which the heat exchanger and the blower are disposed. The electrical component box mounting plate attaches the electrical component box to the partition plate. Further, the electrical component box mounting plate has mounting claws that are hooked on the partition plate, and the partition plate has a claw insertion hole into which the mounting claw is inserted. At least one of the electrical component box and the electrical component box mounting plate is provided with a hole closing portion that covers the gap between the claw insertion hole and the mounting claw.

  Conventionally, rainwater scattered by the rotation of the blower during wind and rain may enter through the nail insertion hole of the partition plate and reach the interior of the electrical component box. However, in this outdoor unit, the hole closing part is provided. , Rainwater intrusion is prevented. As a result, rainwater does not reach the interior of the electrical component box, and electrical components are prevented from being damaged.

  An outdoor unit of an air conditioner according to a second aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect of the present invention, wherein the hole closing portion is integrally formed with the electrical component box mounting plate together with the mounting claws.

  In this outdoor unit, since it is not necessary to provide a hole closing part separately, the number of parts does not increase and an increase in cost is suppressed. Further, since the attachment claw is inserted into the claw insertion hole and the claw insertion hole is closed at the same time, the assembly workability is good.

  An outdoor unit of an air conditioner according to a third aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect of the present invention, and the hole closing portion is integrally formed with the electrical component box.

  In this outdoor unit, since it is not necessary to provide a hole closing part separately, the number of parts does not increase and an increase in cost is suppressed.

  An outdoor unit of an air conditioner according to a fourth aspect is the outdoor unit of the air conditioner according to the first aspect, wherein the electrical component box is a resin member and the electrical component box mounting plate is a sheet metal member. The mounting claw is formed by cutting and raising the electrical component box mounting plate. The hole closing portion includes a sheet metal surface surrounding the cut and raised hole formed when the mounting claw is cut and raised, and a resin surface of the electrical component box that covers the cut and raised hole.

  In this outdoor unit, when the mounting claw is inserted into the claw insertion hole, the cut and raised hole and the sheet metal surface face the claw insertion hole, the sheet metal surface covers a part of the claw insertion hole, and the sheet metal surface covers The part that cannot be covered is covered with a resin surface. As a result, since the sheet metal surface and the resin surface also serve as the hole closing portion, the shape of the hole closing portion is simple, and an increase in processing costs is suppressed.

  In the outdoor unit of the air conditioner according to the first aspect of the present invention, the penetration of rainwater is prevented by providing the hole closing portion. As a result, rainwater does not reach the interior of the electrical component box, and electrical components are prevented from being damaged.

  In the outdoor unit of the air conditioner according to the second aspect of the present invention, it is not necessary to provide the hole closing portions individually, so that the number of parts does not increase and an increase in cost is suppressed. Further, since the attachment claw is inserted into the claw insertion hole and the claw insertion hole is closed at the same time, the assembly workability is good.

  In the outdoor unit of the air conditioner according to the third aspect of the present invention, since it is not necessary to provide the hole closing portions individually, the number of parts does not increase and the cost increase is suppressed.

  In the outdoor unit of the air conditioner according to the fourth aspect of the present invention, when the mounting claw is inserted into the claw insertion hole, the cut and raised hole and the sheet metal surface face the claw insertion hole, and the sheet metal surface is one of the claw insertion holes. The part which covers the part and cannot be covered by the sheet metal surface is covered with the resin surface. As a result, since the sheet metal surface and the resin surface also serve as the hole closing portion, the shape of the hole closing portion is simple, and an increase in processing costs is suppressed.

  Embodiments of the present invention will be described below with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

<Configuration of outdoor unit 2>
FIG. 1 is a plan view of an outdoor unit according to an embodiment of the present invention, in which the top plate is removed and the inside is shown in a plan view. In FIG. 1, in the outdoor unit 2, the inside of a substantially rectangular parallelepiped casing 20 is divided into a machine room 20a and a blower room 20b by a partition plate 28 extending vertically. The outdoor unit 2 is connected to an indoor unit (not shown) disposed indoors via a refrigerant communication pipe (not shown).

  The outdoor unit 2 is necessary for the configuration of the vapor compression refrigeration circuit such as the outdoor fan 4, the compressor 51, the outdoor heat exchanger 52, the liquid side shut-off valve 61, the gas side shut-off valve 62, and piping other than the casing 20. It is equipped with various members. In the outdoor unit 2, when the outdoor fan 4 is operating, air is sucked from the directions B and C in FIG. 1, exchanges heat with the outdoor heat exchanger 52, and then blows out in the direction A.

(Outdoor fan 4)
The outdoor fan 4 is a propeller fan having a plurality of blades, and is disposed on the front side of the outdoor heat exchanger 52 in the blower chamber 20b so as to face the air outlet 23a. The outdoor fan 4 is rotationally driven by an outdoor fan electric motor 4a.

(Casing 20)
2 is a front view of the outdoor unit according to the present embodiment, FIG. 3 is a right side view of the outdoor unit according to the present embodiment, and FIG. 4 is a rear view of the outdoor unit according to the present embodiment. is there. 1 and 2, the casing 20 has a substantially rectangular parallelepiped shape, and its six surfaces are a bottom plate 21, a first front plate 23, a second front plate 24, a right side plate 25, a suction grill 26 and a top plate 29. (See FIG. 2).

  The bottom plate 21 is a substantially rectangular metal plate-like member that constitutes the bottom portion of the casing 20, and the peripheral edge of the bottom plate 21 is bent upward. On the lower surface of the bottom plate 21, two foundation legs 98 are provided that are fixed to the foundation platform 99 at the installation location. The base leg 98 is a metal plate-like member extending from the front side to the rear side of the casing 20.

  The first front plate 23 forms a front surface and a left side surface on the left side of the front end of the partition plate 28 when the air outlet 23a side is the front surface. The first front plate 23 is formed with a suction port for sucking air from the direction C. Further, the first front plate 23 is provided with an air outlet 23a for blowing out air sucked from the directions B and C to the outside.

  The second front plate 24 forms a part of the right front surface and the right side surface from the front end of the partition plate 28. As shown in FIGS. 2 and 3, a front lower cover 39 is attached to the lower part of the second front plate 24. The front lower cover 39 is a member for closing the notch 241 at the lower end of the second front plate 24, and has a hole 39a. The hole 39a is fitted with a claw 244 protruding from the end face of the notch 241 in the front direction of FIG.

  A region not cut out (non-notched portion) at the lower front end of the front face of the second front plate 24 is fastened by a screw 90 to a region where the peripheral edge of the bottom plate 21 is bent upward. At this time, the front lower end of the second front plate 24 is fastened so as to be outside the peripheral edge of the bottom plate 21. As shown in FIG. 3, the front lower cover 39 is fixed to the lower right side surface of the second front plate 24 and the peripheral edge portion of the bottom plate 21 by screws 90.

  The right side plate 25 is adjacent to the second front plate 24 and forms the remainder of the right side surface of the casing 20 and a part of the back surface. As shown in FIGS. 3 and 4, a lower back cover 40 is attached to the lower portion of the right side plate 25, and this lower back cover 40 is a member for closing the opening 251 at the lower end of the right side plate 25. is there.

  Since the liquid refrigerant communication pipe 18, the gas refrigerant communication pipe 19 and the electric wire are inserted into the opening 251, the back lower cover 40 is opened with the liquid refrigerant communication pipe 18, the gas refrigerant communication pipe 19 and the electric wire penetrating therethrough. 251 is closed. Depending on the installation conditions of the outdoor unit 2, the back lower cover 40 may be in a state where only the liquid refrigerant communication pipe 18 and the gas refrigerant communication pipe 19 are penetrated, or in a state where only the electric wire is penetrated. .

  The lower back cover 40 is fixed to the lower right side of the right side plate 25 and the peripheral edge of the bottom plate 21 by screws 90. For the rear lower cover 40, for convenience of explanation, a region fixed to the lower right side of the right plate 25 and the peripheral edge of the bottom plate 21 is a cover fixing portion 41, and a free end of the non-fixed region is a cover free end portion 42. To do. The cover free end 42 enters the inside of the lower part on the back side of the right side plate 25.

  The suction grill 26 forms the remaining back surface adjacent to the right side plate 25, and an air inlet 26 c that is sucked into the casing 20 by the outdoor fan 4 is formed.

  In FIG. 1, the partition plate 28 has a bent shape so as to protrude toward the blower chamber 20b, and is arranged so as to partition the inside of the casing 20 into two left and right spaces. The front side end of the partition plate 28 is fastened to the right end portion of the first front plate 23 with a screw or the like, and the back side end portion of the partition plate 28 is fastened to the front side end of the tube plate 59 with a screw or the like. .

  The tube sheet 59 is a substantially L-shaped member arranged along the back surface from the left side surface of the casing 20, and is provided so as to face the right end surface of the outdoor heat exchanger 52. The lower part is fixed to the bottom plate 21 with screws or the like.

  The top plate 29 is a horizontally long, substantially rectangular metal plate-like member constituting the top surface portion of the outdoor unit 2, and the peripheral edge of the top plate 29 is bent downward. In the present embodiment, the second front plate 24 is held by the top plate 29 by the upper end of the second front plate 24 entering the inside of the region cut and bent downward at the peripheral edge of the top plate 29. Screws are not fastened. Therefore, by eliminating the screw fastening between the lower end of the second front plate 24 and the peripheral edge portion of the bottom plate 21, the second front plate 24 descends downward and is removed from the casing 20. Since the inside of the machine room 20a can be seen when the second front plate 24 is removed, the second front plate 24 is removed when performing maintenance work on the components accommodated in the machine room 20a. .

(Closed valve mounting plate 30)
As shown in FIG. 1, the closing valve mounting plate 30 is an elongated plate-like shape provided in the machine room 20 a so as to be spanned between the right end portion of the first front plate 23 and the front end portion of the right side plate 25. This is a metal member having a first region 30 a, a second region 30 b, and a fixing portion 31. The shut-off valve mounting plate 30 is disposed at a height position near the upper end of the compressor 51 in the machine room 20a.

  The first region 30a is formed by the second front plate 24 from the right end portion of the first front plate 23 toward the right side surface portion of the second front plate 24 in a state where the closing valve mounting plate 30 is disposed in the machine room 20a. The second front plate 24 extends substantially parallel to the front portion, and then extends while being inclined away from the front portion of the second front plate 24, and then toward the right side portion of the second front plate 24. It is a part extending substantially parallel to the part. The first region 30 a has a support portion 33 held at the right end portion of the first front plate 23 together with the front end portion of the partition plate 28 at the left end in the longitudinal direction.

  The second region 30b is formed from the front surface portion of the second front plate 24 from the right end in the longitudinal direction of the first region 30a toward the front end of the right side plate 25 in a state where the closing valve mounting plate 30 is disposed in the machine room 20a. It is a portion that extends while inclining in a direction away from it. The second region 30b is a portion where the liquid side closing valve 61 and the gas side closing valve 62 are mounted, and the liquid side closing valve 61 and the gas side closing valve 62 can be mounted side by side in the longitudinal direction. In a state where the closing valve mounting plate 30 is disposed in the machine room 20 a, the gas side closing valve 62 is mounted on the right side surface portion side of the second front plate 24, and the liquid side closing valve 61 is placed on the left side of the gas side closing valve 62. Is installed.

(Compressor 51)
In FIG. 1, a compressor 51 is a hermetic compressor in which a compressor motor is built in a housing, and is disposed in a machine room 20a. The compressor 51 has a vertical cylindrical shape having a height of about 1/3 to 1/2 of the total height of the casing 20, and a lower portion thereof is fixed to the bottom plate 21. Further, the compressor 51 is disposed in the vicinity of the center in the front-rear direction of the machine room 20a and in the vicinity of the partition plate 28 of the machine room 20a in the plan view of the casing 20.

(Outdoor heat exchanger 52)
The outdoor heat exchanger 52 is disposed in the blower chamber 20 b and exchanges heat with the air sucked into the casing 20 by the outdoor fan 4. The outdoor heat exchanger 52 has a substantially L shape in a plan view of FIG. 1 and is disposed along the back surface from the left side surface of the casing 20.

(Electrical component box 55)
The electrical component box 55 is a casing formed of a resin excellent in electrical insulation, and includes a control unit that communicates with an indoor unit (not shown) to control the outdoor fan motor 4a, the compressor 51, and the like. Built-in. The electrical component box 55 is attached to the partition plate 28.

(Electrical component box mounting plate 56)
The electrical component box mounting plate 56 is a sheet metal member that mounts the electrical component box 55 on the partition plate 28, and has mounting claws 56 a that are hooked on the partition plate 28. The attachment claw 56 a is hooked on the partition plate 28 by being inserted into a claw insertion hole 28 a provided in the partition plate 28 in advance.

  FIG. 5 is a partial perspective view of the inside of the casing as viewed from the electrical component mounting plate side. In FIG. 5, the electrical component box mounting plate 56 has a hole closing portion 56b of a size capable of completely covering the claw insertion hole 28a at a position facing the claw insertion hole 28a of the partition plate 28. Further, an attachment claw 56a to be inserted into the claw insertion hole 28a is formed in the hole closing portion 56b.

  6 is a cross-sectional view of the hole closing portion taken along line EE of FIG. In FIG. 6, the hole closing portion 56b is formed by folding back the end portion of the electrical component box mounting plate 56 in the opposite direction, and by cutting off a part of the end portion of the folded portion by about 90 °, the mounting claw 56a. Is formed. That is, the attachment claw 56 a and the hole closing portion 56 b are integrally formed with the electrical component box attachment plate 56.

  When the attachment claw 56a is inserted into the claw insertion hole 28a, the hole closing portion 56b closes the claw insertion hole 28a. As a result, rainwater splashed from the blower chamber 20b due to the rotation of the outdoor fan 4 during wind and rain cannot enter the machine chamber 20a from the claw insertion hole 28a, and the rainwater reaches the interior of the electrical component box 55. Is prevented.

<First Modification>
In the above embodiment, the hole closing portion 56b is formed in the electrical component box mounting plate 56, but is not limited thereto, and may be formed in the electrical component box. FIG. 7 is a cross-sectional view of the hole closing portion of the outdoor unit according to the first modification. In FIG. 7, the electrical component box 155 is integrally formed with a hole closing portion 155 a that covers the mounting claws 156 a of the electrical component box mounting plate 156 and the claw insertion holes 28 a of the partition plate 28. Since the electrical component box 155 is a resin member, the hole closing portion 155a can be formed with a step so as to be along the bent portion of the mounting claw 156a. That is, the merit of providing the hole closing portion 155a on the electrical component box 155 side is that it can cope with a complicated shape.

<Second Modification>
The hole closing portion may be formed on both the electrical component box and the electrical component box mounting plate. FIG. 8 is a cross-sectional view of the hole closing portion of the outdoor unit according to the second modification. In FIG. 8, an attachment claw 256a is cut and raised at a position away from the end face of the electrical component box attachment plate 256 inward. Since the cut-and-raised hole 256b generated by cutting and raising the mounting claw 256a is surrounded by a sheet metal surface, when the mounting claw 256a is inserted into the claw insertion hole 28a of the partition plate 28, the sheet metal surface Covers a part of the nail insertion hole 28a. That is, the sheet metal surface surrounding the cut and raised hole 256b forms the hole closing portion 256c.

  In the region where the cut and raised hole 256b and the claw insertion hole 28a overlap, the cut and raised hole 256b is covered by extending the resin surface of the electric component box 255 facing the electric component box mounting plate 256. Is called. That is, the resin surface that covers the cut-and-raised hole 256b forms the hole closing portion 255a. In this way, the hole closing portions 255a and 256c are formed in both the electric component box 255 and the electric component box mounting plate 256, and the portions that cannot be individually closed are complemented, thereby forming the shapes of the hole closing portions 255a and 256c. It becomes possible to simplify.

<Features>
In the outdoor unit 2, the internal space of the casing 20 is divided by the partition plate 28 into a machine room 20 a in which the electrical component box 55 is arranged and a blower room 20 b in which the outdoor fan 4 is arranged. The electrical component box 55 is attached to the partition plate 28 by an electrical component box mounting plate 56. The electrical component box mounting plate 56 has a mounting claw 56a that is hooked to the partition plate 28, and the partition plate 28 has a claw insertion hole 28a into which the mounting claw 56a is inserted. On the electrical component box mounting plate 56, a hole closing portion 56b that covers the gap between the claw insertion hole 28a and the mounting claw 56a is integrally formed with the mounting claw 56a. As a result, the hole closing portion 56b prevents water droplets scattered from the blower chamber 20b from passing through the claw insertion hole 28a, so that the water droplets do not reach the interior of the electrical component box and damage to the electrical components is prevented. Is prevented. Moreover, since it is not necessary to provide the hole closing part 56b separately, the number of parts does not increase and an increase in cost is suppressed. Furthermore, since the attachment claw 56a is inserted into the claw insertion hole 28a and the claw insertion hole 28a is closed at the same time, the assembly workability is good.

  As described above, according to the present invention, rainwater scattered from the blower chamber is prevented from entering the machine chamber through the claw insertion hole of the partition plate. This is effective for countermeasures against water droplet intrusion in a housing having an adjacent space.

The top view of the outdoor unit which concerns on one Embodiment of this invention. The front view of the outdoor unit which concerns on this embodiment. The right view of the outdoor unit which concerns on this embodiment. The rear view of the outdoor unit which concerns on this embodiment. The partial perspective view inside a casing seen from the electrical equipment mounting plate side. Sectional drawing of the hole closure part in the EE line | wire of FIG. Sectional drawing of the hole closing part of the outdoor unit which concerns on a 1st modification. Sectional drawing of the hole closing part of the outdoor unit which concerns on a 2nd modification.

Explanation of symbols

2 Outdoor unit 4 Outdoor fan 20 Casing 20a Machine room (first space)
20b Blower room (second space)
28 Partition plate 28a Claw insertion hole 52 Heat exchanger 55, 155, 255 Electrical component box 56, 156, 256 Electrical component box mounting plate 56a, 156a, 256a Mounting claw 56b, 155a, 255a, 256c Hole closing part 256b Hole

Claims (4)

A heat exchanger (52) forming part of a vapor compression refrigeration circuit;
A blower (4) for applying outside air to the heat exchanger (52);
An electrical component box (55, 155, 255) containing a control unit for controlling at least the blower (4);
A casing (20) that houses the heat exchanger (52), the blower (4), and the electrical component box (55, 155, 255);
The first space (20a) in which the electrical component box (55, 155, 255) is disposed, the heat exchanger (52), and the blower (4) are disposed in the internal space of the casing (20). A partition plate (28) divided into two spaces (20b);
An electrical component box mounting plate (56, 156, 256) for mounting the electrical component box (55, 155, 255) to the partition plate (28);
With
The electrical component box mounting plate (56, 156, 256) has mounting claws (56a, 156a, 256a) hooked to the partition plate (28),
The partition plate (28) has a claw insertion hole (28a) into which the mounting claw (56a, 156a, 256a) is inserted,
At least one of the electrical component box (55, 155, 255) and the electrical component box mounting plate (56, 156, 256) has the claw insertion hole (28a) and the mounting claw (56a, 156a, 256a). A hole closing portion (56b, 155a, 255a, 256c) that covers the gap between
Air conditioner outdoor unit (2). The hole closing portions (56b, 256c) are integrally formed with the electrical component box mounting plate (56, 256) together with the mounting claws (56a, 256a).
The outdoor unit (2) of the air conditioning apparatus according to claim 1. The hole closing portion (155a, 255a) is integrally formed with the electrical component box (155, 255).
The outdoor unit (2) of the air conditioning apparatus according to claim 1. The electrical component box (255) is a resin member,
The electrical component box mounting plate (256) is a sheet metal member,
The mounting claw (256a) is formed by cutting and raising the electrical component box mounting plate (256),
The hole closing part (255a, 256c)
A sheet metal surface surrounding a cut and raised hole (256b) formed when the mounting claw (256a) is cut and raised;
A resin surface of the electrical component box (255) covering the cut and raised hole (256b);
including,
The outdoor unit (2) of the air conditioning apparatus according to claim 1.

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