JP2019148360A - Refrigerator - Google Patents

Abstract

To solve such a problem that an increase in the size of electric equipment box of an outdoor unit for a refrigerator conventionally causes difficulty in machining a metal plate when considering that the electric equipment box is covered with the metal plate.SOLUTION: An outdoor unit (20) includes an electric equipment casing (40), and structural members (30, 50, 9a) to which the electric equipment casing (40) is fixed, the electric equipment casing (40) having a resin member (42), a first metal plate member (41a), and a second metal plate member (41b), the first metal plate member (41a) and the second metal plate member (41b) being supported by the structural members (30, 50, 9a).SELECTED DRAWING: Figure 9

Description

  Refrigeration unit outdoor unit with electrical component casing

  In the outdoor unit of the refrigeration apparatus, a machine driven by electricity such as a compressor and a fan is arranged, and electrical components for driving and controlling the machine are also arranged. The electrical component box that accommodates the electrical component is usually disposed at the upper part on the machine room side where the compressor is disposed. One problem is to prevent the electrical component box from falling when the resin electrical component box burns. In patent document 1 (Unexamined-Japanese-Patent No. 2002-5477), it measures as a countermeasure when resin burns by covering a part of electrical component box with a metal case.

  When the electrical component box is large, it is difficult to make the metal case large, and the cost increases.

  The refrigeration apparatus according to the first aspect includes an outdoor unit. The outdoor unit has an electrical component casing and a structural member. The electrical component casing includes electrical components that control the refrigeration apparatus, particularly the outdoor unit. The electrical component casing is fixed to the structural member. The electrical component casing includes a resin member and a plurality of metal plate members. The plurality of metal plate members are fixed to the resin member. The plurality of metal plate members include a first metal plate member and a second metal plate member different from the first metal plate member. The first metal plate member and the second metal plate member are supported by the structural member.

  In the refrigeration apparatus according to the first aspect, the electrical component casing of the outdoor unit includes a resin member and a metal plate member, and the metal plate member has a divided structure. Since the metal plate member has a divided structure, even if the electrical component casing becomes large, the electrical component casing can be easily covered with the metal plate member.

  The refrigeration apparatus according to the second aspect is the refrigeration apparatus according to the first aspect, and the second metal plate member is supported by the structural member via the first metal plate member. That is, the second metal plate member may be supported by the structural member via the first metal plate member, even if it is not directly instructed by the structural member.

  In the refrigeration apparatus according to the first and second aspects, since the first and second metal plate members are supported by the structural member, even if the resin member burns, the metal plate member falls. Can be prevented.

  A refrigeration apparatus according to a third aspect is the refrigeration apparatus according to the second aspect, wherein one of the first metal plate member and the second metal plate member has a protrusion, and the other is inserted with the protrusion. Has an opening. By inserting the protrusion into the opening, the second metal plate member is supported by the first metal plate member.

  A refrigeration apparatus according to a fourth aspect is the refrigeration apparatus according to any one of the first aspect to the third aspect, wherein the plurality of metal plate members are further third metal plates different from the first and second metal plate members. It has a member. The third metal plate member is supported by the structural member via the first metal plate member and / or the second metal plate member.

  A refrigeration apparatus according to a fifth aspect is the refrigeration apparatus according to the fourth aspect, wherein either one of the third metal plate member and the first metal plate member has a second protrusion, and the other is a second protrusion. A second opening into which the portion is inserted. By inserting the second protrusion into the second opening, the third metal plate member is supported by the first metal plate member. One of the third metal plate member and the second metal plate member has a third protrusion, and the other has a third opening into which the third protrusion is inserted. The third metal plate member is supported by the second metal plate member by inserting the third protrusion into the third opening.

  The refrigeration apparatus of the sixth aspect is the refrigeration apparatus of the first to fifth aspects, and the outdoor unit further includes a heat sink for cooling the electrical components. The plurality of metal plate members have a structure that supports the heat sink.

  The refrigeration apparatus according to the sixth aspect can prevent the heat sink from falling when the resin member is burned out.

  The refrigeration apparatus according to a seventh aspect is the refrigeration apparatus according to the first aspect, wherein the second metal plate member is directly supported by the structural member.

  The refrigeration apparatus according to the eighth aspect is the refrigeration apparatus according to the first to seventh aspects, and the outdoor unit further includes a compressor, a fan, and a heat exchanger. The structural member is one member selected from the group of a housing, a partition plate, and a heat exchanger tube plate, or a combination thereof. The housing of the outdoor unit accommodates the compressor and the fan inside. The partition plate divides the inside of the housing into a blower chamber and a machine chamber. The blower chamber includes a fan. The machine room includes a compressor. The heat exchanger tube plate is attached to the heat exchanger.

It is a schematic block diagram of the freezing apparatus 1 of 1st Embodiment. It is a top view of the outdoor unit 20 of the first embodiment. It is the perspective view which looked at the outdoor unit 20 of 1st Embodiment from the upper right front. It is the perspective view which looked at the outdoor unit 20 of 1st Embodiment from the same direction as FIG. 3 except the front board 54 etc. of the housing | casing 50. FIG. It is the perspective view which looked at the outdoor unit 20 of 1st Embodiment from right rear upper direction. It is a perspective view of the electrical component casing 40 of 1st Embodiment. 3 is a perspective view showing a positional relationship between a partition plate 30 of the first embodiment and an electrical component casing 40. FIG. It is a perspective view of the some metal plate member 41 of 1st Embodiment. It is an exploded view of the 1st-3rd metal plate member 41a, b, c of 1st Embodiment.

<First Embodiment>
(1) Overall Configuration The overall configuration of the refrigeration apparatus 1 will be described. FIG. 1 is a schematic configuration diagram of a refrigeration apparatus 1. The refrigeration apparatus 1 is an air conditioner. By performing a vapor compression refrigeration cycle, cooling and heating of a room such as a building can be performed. The refrigeration apparatus 1 mainly includes an indoor unit 10, an outdoor unit 20, communication pipes 4 and 5 that connect the indoor unit 10 and the outdoor unit 20, and a control unit that controls components of the indoor unit 10 and the outdoor unit 20. And have. The vapor compression refrigerant circuit 3 of the refrigeration apparatus 1 is configured by connecting an indoor unit 10 and an outdoor unit 20 via refrigerant communication tubes 4 and 5.

  The outdoor unit 20 is installed outdoors (on the roof of a building, in the vicinity of the wall surface of the building, etc.). The outdoor unit 20 mainly includes an accumulator 7, a compressor 8, a four-way switching valve 24, an outdoor heat exchanger 9, an expansion valve 6 as an expansion mechanism, closing valves 21 and 22, and an outdoor fan 23. ,have. Each device and the valve are connected by a refrigerant pipe.

  The indoor unit 10 is installed indoors (such as a living room or a ceiling space). One indoor unit 10 may be provided for one outdoor unit 20, or a plurality of indoor units 10 may be provided. In FIG. 1, three indoor units 10 are connected to one outdoor unit 20. Therefore, the refrigeration apparatus of the present embodiment is a so-called multi-type. The indoor unit 10 mainly includes an indoor heat exchanger 11 and an indoor fan 12.

(2) Configuration of outdoor unit The outdoor unit 20 will be described. As shown in FIG. 1, the outdoor unit 20 includes an accumulator 7, a compressor 8, a four-way switching valve 24, an outdoor heat exchanger 9, an outdoor fan 23, an expansion valve 6, a closing valve 21, 22, an electrical component casing 40, a partition plate 30, and a housing 50 for housing them.

  2 is a top view of the outdoor unit 20 seen from above, FIG. 3 is a perspective view seen from the upper right front, and FIG. 4 is the same direction as FIG. 3 except for the front plate 54 of the housing 50. FIG. 5 is a perspective view seen from the upper right rear. In FIGS. 2 to 5, parts that should originally be visible may not be related to the description or may be omitted for easy understanding. Further, here, as described in each drawing, the directions of up, down, front, back, right, and left are defined. In the following description, it is used without any particular comment.

  The housing 50 is made of a combination of a metal bottom plate 51, a top plate (not shown), a right side plate 52, a left side plate 53, a front plate 54, and a rear plate (not shown). The six plates of the housing 50 are metal plates. As shown in FIG. 4, the space inside the housing 50 is divided by a partition plate 30 into a blower chamber 31 that is a left space and a machine chamber 32 that is a right space. In the present embodiment, the upper part of the partition plate 30 does not reach the top plate. An electrical component casing 40 is placed on the partition plate 30. The electrical component casing 40 fills the space between the top plate and the partition plate 30. The upper part of the machine room 32 is also almost filled with an electrical component casing 40.

  The blower chamber 31 is a heat exchange chamber. As can be seen from FIG. 2 or 3, the heat exchanger 9 is arranged along the left side and the rear side of the housing 50. A heat exchanger tube 9 a is disposed at the end of the heat exchanger 9. A fan 23 is arranged to send air to the heat exchanger 9. The fan 23 sucks air from the front and sends the air toward the rear surface or the left surface toward the heat exchanger.

  As shown in FIG. 1, a compressor 8, an accumulator 7, a four-way switching valve 24, an expansion valve 6 and the like are arranged in the machine chamber 32. Although not shown in FIGS. 2 to 5, the compressor 8 and the accumulator 7 are disposed in the lower part of the machine room 32.

  The partition plate 30 has a curved surface. The partition plate 30 is a metal plate. The partition plate 30 is indicated by a dotted line in FIG. As apparent from the top view of FIG. 2, the partition plate 30 is bent to the blower chamber 31 side and then greatly bent to the machine chamber 32 side from the front to the rear. Moreover, the partition plate 30 is not a vertically upright wall. As a whole, the shape expands from the top to the bottom. In other words, the partition plate 30 is inclined from the blower chamber side to the machine chamber side as it goes from the bottom to the top. In particular, as shown in FIG. 7, the upper portion of the partition plate 30 has an inclined portion 30 b. And the bending part 30a is arrange | positioned further on the inclination part 30b. The bent part 30 a is the uppermost part of the partition plate 30.

(3) Electrical Component Casing 40 and Internal Configuration The electrical component casing 40 will be described with reference to the perspective view of FIG. 6, the diagram showing the relationship with the partition plate of FIG.

  As shown in FIGS. 4 and 6, the electrical component casing 40 includes a lid 47, a resin member 42, and a metal plate member 41. An electrical component is arranged inside the electrical component casing 40. Further, a terminal block 45 is disposed on the right side plate 52 side in contact with the electrical component casing 40. A heat sink 46 is disposed on the air blowing chamber 31 side under the lid 47 and the substrate.

  As shown in FIG. 4, the lid 47 covers the entire upper part of the electrical component casing 40. Above the lid 47 is a top plate of the housing 50. The lid 47 is made of resin.

  A substrate (not shown) is disposed under the lid 47. The board is a printed board. Some electrical components are mounted on the lower surface of the substrate. The electrical component constitutes a part of the control unit of the entire refrigeration apparatus 1.

  The resin member 42 is located under the lid 47 and the substrate. The resin member 42 is substantially the same size as the lid 47 and the substrate when viewed from above, and supports the lid 47 and the substrate. As is understood from FIGS. 2 and 6, the resin member 42 has a shape in which a central portion 42 c and two substantially rectangular frames 42 a and 42 b are arranged side by side. A hole is formed in the right frame 42b so that the electrical component mounted on the printed circuit board does not hit even if it protrudes. A heat sink 46 is received in the hole in the left frame 42 a and is supported by the resin member 42.

  The heat sink 46 plays a role of releasing the heat of the heat generating component of the electrical component. The heat sink 46 is arranged so as to adhere directly or indirectly to some ICs of the electrical component. The lower part of the heat sink 46 is a blower chamber 31.

  The metal plate member 41 is disposed on the lower side or the outer side of the resin member 42. That is, the lower part of the electrical component casing 40 is constituted by the resin member 42 and the metal plate member 41, and the electrical component is supported by the resin member 42 and the metal plate member 41. As can be understood from FIGS. 2 and 6, in the left frame 42 b of the resin member 42, the metal plate member 41 is also a frame body. The heat sink 46 is accommodated inside and supports the heat sink 46. On the other hand, in the portion of the frame 42b on the right side of the resin member 42, the metal plate member 41 is not a frame shape, but is a box that covers four surfaces of the bottom surface, the right surface, the left surface, and the rear surface. That is, the resin member 42 is not disposed on the bottom surface of the electrical component casing 40, and the metal plate member 41 constitutes the bottom surface of the electrical component casing 40.

  A reactor 43 is fixed on the metal plate member 41 on the bottom surface of the electrical component casing 40. The reactor 43 is one of electrical components.

  The electrical component casing 40 is fixed to the housing 50. The electrical component casing 40 is also supported by the heat exchanger tube 9a. Furthermore, the electrical component casing 40 is also supported by the partition plate 30. In the present embodiment, the electrical component casing 40 is placed on the bent portion 30 a of the partition plate 30. As shown in FIG. 7, the reactor 43 on the bottom surface of the electrical component casing 40 is also arranged so as to be just above the bent portion 30a. The reactor is disposed between the left end 30L and the right end 30R of the partition plate 30 in a top view.

(4) Metal plate member 41
The metal plate member will be described in detail with reference to FIGS. FIG. 8 is an overall perspective view of the plurality of metal plate members 41, and FIG. 9 is an exploded view illustrating the metal plate members separately.

  As is clear from FIG. 9, the metal plate member 41 of the present embodiment is composed of three members: a first metal plate member 41a, a second metal plate member 41b, and a third metal plate member 41c. The number of metal plate members is not limited to three. For example, 2 to 10. The number of the metal plate members 41 is appropriately designed from the viewpoint of ease of manufacture, complexity of assembly, and the like. Thus, each member is separately fixed to the resin member 42. Further, the three members are configured to support each other. Thus, at least one metal plate member is supported by the structural member of the outdoor unit 20. Here, the structural member is one of the housing 50, the partition plate 30, the heat exchanger tube plate 9a, or a combination thereof. In this embodiment, the 1st metal plate member 41a is supported by the housing | casing 50, the partition plate 30, and the heat exchanger tube board 9a. In the present embodiment, the second and third metal plate members 41b and 41c are supported by the first metal plate member 41a.

  The description of the configuration in which the three metal plate members 41a, 41b, and 41c support each other will be continued. Each metal plate member is provided with protrusions 411A, 412A, 413A and openings 411B, 412B, 413B. The protruding portions 411A, 412A, and 413A may be called nails. The protrusions 411A, 412A, and 413A are inserted into the openings 411B, 412B, and 413B, respectively, so that the metal plate members 41a, 41b, and 41c are supported with each other. FIG. 8 is a diagram in which the metal plate members 41a, 41b, and 41c are combined, and the combined portions of the protruding portions 411A, 412A, and 413A and the openings 411B, 412B, and 413B are the engaging portions 411, 412, and 413, respectively. Yes. In FIG. 9, the protruding portion 411A is formed in the third metal plate member 41c and the opening 411B is formed in the first metal plate member 41a, but may be formed in reverse. The same applies to the other engaging portions 412 and 413. Moreover, although the 3rd metal plate member 41c and the 1st metal plate member 41a are supported by one set of protrusion part 411A and opening 411B, you may support by the group of a some protrusion part and opening.

  The metal plate member 41 of this embodiment is divided into a plurality of metal plate members 41a, 41b, and 41c. The first metal plate member 41a is supported by a structural member, and the second metal plate member 41b and the third metal plate member 41c are supported by the first metal plate member 41a. Accordingly, the entire metal plate member 41 is supported by the structural member. Even if the resin member 42 burns and is lost, the metal plate member 41 is not easily dropped. Further, even when the electrical component burns, it is possible to maintain a shielding effect that prevents the fire from moving to the soundproofing material or the like of the compressor underneath.

  The metal plate member 41 of this embodiment has a hole into which the heat sink 46 is inserted along the third metal plate member 41c. When the resin member 42 is lost, the heat sink 46 can be prevented from falling. Since the structure in which the hole is formed in the metal plate member 41 is realized by dividing the structure into three metal plate members, it is possible to save the metal material as compared with the case where one plate is hollowed out. I can do it.

(5) Features (5-1)
The electrical component casing 40 of the outdoor unit 20 of the refrigeration apparatus 1 according to the present embodiment includes a resin member 42 and a plurality of metal plate members 41. The metal plate member 41 is divided into at least a first metal plate member 41a and a second metal plate member 41b. Further, the first metal plate member 41a and the second metal plate member 41b are supported by the structural member.

  Thus, by adopting a split structure for the metal plate member, even when the electrical component casing is enlarged or a complicated configuration is required, the metal plate member can be easily manufactured.

(5-2)
The metal plate member 41 is fixed to the resin member 42. Therefore, the metal plate member 41 is normally held by the structural member as an electrical component casing. However, in the present embodiment, the first metal plate member 41a and the second metal plate member 41b are supported by the structural member without using the resin member 42. By doing in this way, even when the resin member 42 is burned out, the metal plate member does not fall. Thus, the shielding effect is maintained. By doing in this way, for example, even when an electrical component ignites in the electrical component casing, there is a low risk of spreading the soundproofing material of the compressor at the lower portion.

(5-3)
In the electrical component casing 40 of the present embodiment, the first metal plate member 41a and the second metal plate member 41b are supported by the protruding portion 412A and the opening 412B. That is, the 1st metal plate member 41a and the 2nd metal plate member 41b do not require stubborn fixation, such as screwing. The reason for this is that the support of the plurality of metal plate members 41 is sufficient to prevent the dropping in the case of an extraordinary temporary case such as when the resin member 42 is burned out. Cost can be suppressed with a simple configuration.

(5-4)
The plurality of metal plate members of the electrical component casing 40 of the present embodiment further includes a third metal plate member 41c. Thus, each member can be made a simpler shape by dividing into first to third metal plate members.

(5-5)
The plurality of metal plate members 41 of the present embodiment support the heat sink 46. That is, even when the resin member 42 is burned out, the heat sink 46 can be prevented from falling.

(5-5)
Further, the plurality of metal plate members 41 of the present embodiment have a structure surrounding the heat sink 46. In other words, a hole is formed in a portion of the metal plate member 41 where the heat sink 46 is disposed. In this way, there is no need to use extra metal for this part. If this shape is to be realized with an integral metal plate member, the metal material in that portion is wasted by making a hole. On the other hand, in this embodiment, it implement | achieves with the divided | segmented metal plate member, and such a waste does not arise.

(5-6)
The structural member of this embodiment is one member selected from the group of the housing 50, the partition plate 30, and the heat exchanger tube plate 9a, or a combination thereof. More specifically, the metal plate member 41 is supported at a plurality of locations. By doing so, the strength of the electrical component casing 40 is increased. Further, even when the resin member is burned out, the metal plate member can be prevented from falling more reliably.

(6) Modification (6-1) Modification 1A
1st Embodiment demonstrated the case where the 2nd metal plate member 41b and the 3rd metal plate member 41c were hold | maintained at the structural member via the 1st metal plate member 41a. Modification 1A is a case where the second metal plate member 41b and the third metal plate member 41c are directly supported by the structural member. In this case, the first to third metal plate members may be separately supported by the structural member.

  Alternatively, the first to third metal plate members may be configured to support each other while being separately supported by the structural member.

  Moreover, in 1st Embodiment and the modification 1A, the case where the some metal plate member 41 was comprised by the three metal plate members was demonstrated. The plurality of metal plate members 41 may be composed of two metal plate members. The plurality of metal plate members 41 may be divided into four or more metal plate members. Each metal plate member may be separately supported by the structural member, or one or a plurality of metal plate members are supported by the structural member, and the other metal plate members are other metal plates. It may be supported indirectly by the member.

(6-2) Modification 2B
In the first embodiment, the case where the refrigeration apparatus is an air conditioner has been described. Modification 2B is a case of a water heater. The present disclosure is also effective in the case of an electrical component casing of a water heater.

  While the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as set forth in the claims. .

DESCRIPTION OF SYMBOLS 1 Refrigeration apparatus 9a Heat exchanger tube plate 20 Outdoor unit 30 Partition plate 40 Electrical component casing 41 Metal plate member 41a First metal plate member 41b Second metal plate member 41c Third metal plate members 411A, 412A, 413A Protruding portions 411B, 412B, 413B Opening 42 Resin member 43 Reactor 46 Heat sink 50 Housing

JP 2002-5477 A

Claims (8)

A refrigeration apparatus (1) comprising an outdoor unit (20),
The outdoor unit (20)
An electrical component casing (40) that houses electrical components that control the refrigeration apparatus (1);
A structural member (30, 50, 9a) to which the electrical component casing (40) is fixed;
The electrical component casing (40)
A resin member (42);
A plurality of metal plate members (41) fixed to the resin member (42);
Have
The plurality of metal plate members (41)
A first metal plate member (41a);
A second metal plate member (41b) different from the first metal plate member;
Have
The first metal plate member (41a) and the second metal plate member (41b) are supported by the structural members (30, 50, 9a).
Refrigeration equipment (1). The second metal plate member (41b) is supported on the structural member (30, 50, 9a) via the first metal plate member (41a).
The refrigeration apparatus according to claim 1. One of the first metal plate member (41a) and the second metal plate member (41b) has a protrusion, and the other has an opening (411B) into which the protrusion (411A) is inserted. The second metal plate member (41b) is supported by the first metal plate member (41a) by inserting the protrusion into the opening.
The refrigeration apparatus according to claim 2. The plurality of metal plate members (41),
A third metal plate member (41c) different from the first and second metal plate members (41a, 41b);
The third metal plate member (41c) is supported by the structural member (30, 50, 9a) via the first metal plate member (41a) and / or the second metal plate member (41b). ,
The refrigeration apparatus (1) according to any one of claims 1 to 3. One of the third metal plate member (41c) and the first metal plate member (41a) has a second protrusion (412A), and the other is a second into which the second protrusion is inserted. The third metal plate member (41c) is supported by the first metal plate member (41a) by having an opening (412B) and inserting the second protrusion into the second opening.
One of the third metal plate member (41c) and the second metal plate member (41b) has a third protrusion (413A), and the other has a third protrusion into which the third protrusion is inserted. The third metal plate member (41c) is supported by the second metal plate member (41b) by having an opening (413B) and inserting the third protrusion into the third opening.
The refrigeration apparatus according to claim 4. The outdoor unit (20) further includes:
A heat sink (46) for cooling the electrical component;
The plurality of metal plate members (41) has a structure for supporting the heat sink (46).
The refrigeration apparatus (1) according to any one of claims 1 to 5. The second metal plate member (41b) is directly supported by the structural member (30, 50, 9a).
The refrigeration apparatus (1) according to claim 1. The outdoor unit (20) further includes:
A compressor (8);
Fan (23),
A heat exchanger (9);
Have
The structural member is
A housing (50) for accommodating the compressor (8) and the fan (23) inside;
A partition plate (30) that divides the interior of the housing (50) into a blower chamber (31) including the fan (23) and a machine chamber (32) including the compressor (8);
A heat exchanger tube (9a) attached to the heat exchanger (9);
A member selected from the group of or a combination thereof,
The refrigeration apparatus (1) according to any one of claims 1 to 7.

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