JP4961979B2 - Air conditioner electrical component unit and air conditioner outdoor unit equipped with the same - Google Patents

Description

  The present invention relates to an electrical component unit of an air conditioner and an outdoor unit of the air conditioner including the same.

  In general, some outdoor units and indoor units of an air conditioner include an electrical component unit on which a control board for controlling each function is arranged.

For example, in an outdoor unit provided with an electrical component unit shown in Patent Document 1, the electrical component unit is arranged on the machine room side.
JP 2005-76923 A (published March 24, 2005)

  However, in the outdoor unit shown in Patent Document 1, water blown from the outside accumulates in the projecting portion that protrudes from the lower end portion of the electrical component unit to the blower chamber side and supports the electrical component unit, and corrosion may occur in the projecting portion. was there. For this reason, conventionally, it has been necessary to take measures to prevent corrosion such as using a galvalume steel plate having high weather resistance.

  However, taking such a measure for preventing corrosion has been a problem due to an increase in manufacturing cost.

  An object of the present invention is to provide an electrical component unit of an air conditioner capable of preventing the progress of corrosion while suppressing an increase in manufacturing cost in the electrical component unit of the air conditioner, and an air conditioner including the same. It is to provide an outdoor unit.

An electrical component unit of an air conditioner according to a first aspect of the present invention is an electrical component of an air conditioner that includes a fan that is attached to face a bell mouth shaped opening formed on a front plate and generates an air flow. It is a unit and is provided with the plate-shaped member and the protrusion part. The plate member extends in the vertical direction. The protruding portion protrudes outward from the lower portion of the plate-like member. Further, the protruding portion is cut out from the downstream side to the upstream side of the air flow so that a part of the plate-like member and the opening portion are arranged so as to overlap in a side view. The upper surface of the protrusion is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the plate-like member in plan view. Further, the upper surface of the protrusion is lower on the downstream side of the air flow than on the upstream side.

  Here, the upper surface of the projecting portion is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the plate-like member in plan view. For this reason, the water droplets adhering to the upper surface of the protruding portion are likely to flow downward.

  This makes it difficult for water droplets to accumulate on the upper surface of the protruding portion, so that the progress of corrosion of the protruding portion can be suppressed.

  As a result, it is possible to prevent the protrusion from corroding while suppressing an increase in manufacturing cost in the electrical component unit, as compared with a case where a corrosion prevention measure is separately taken.

An outdoor unit for an air conditioner according to a second aspect of the present invention includes a casing, a partition plate, a fan, a heat exchanger, and an electrical component unit for the air conditioner. The partition plate extends in the vertical direction so as to partition the inside of the casing into a blower chamber and a machine chamber. The fan is attached so as to face the bell mouth-shaped opening formed in the front plate, and is arranged in the blower chamber to generate an air flow. A heat exchanger is arrange | positioned at an air blower room, and when heat | fever passes through, heat exchange is performed between the refrigerant | coolant which flows through the inside, and air. The electrical component unit of the air conditioner is supported by a partition plate, and has a plate-like member and a protrusion. The plate-like member extends in the vertical direction. The protruding portion protrudes outward from the lower portion of the plate-like member. Further, the protruding portion is cut out from the downstream side to the upstream side of the air flow so that a part of the plate-like member and the opening portion are arranged so as to overlap in a side view. The upper surface of the protrusion is formed so as to incline in the vertical direction with respect to the direction connecting both ends of the plate member in plan view. Moreover, the protrusion part penetrates the partition plate and protrudes into the blower chamber. Furthermore, the upper surface of the protrusion is lower on the downstream side of the air flow than on the upstream side.

  Here, the upper surface of the projecting portion is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the plate-like member in plan view. For this reason, the water droplets adhering to the upper surface of the protruding portion are likely to flow downward.

  This makes it difficult for water droplets to accumulate on the upper surface of the protruding portion, so that the progress of corrosion of the protruding portion can be suppressed.

  As a result, it is possible to prevent the protrusion from corroding while suppressing an increase in manufacturing cost in the electrical component unit, as compared with a case where a corrosion prevention measure is separately taken.

  Moreover, the protrusion part has penetrated the partition plate here and protruded into the air blower chamber. For this reason, since it becomes difficult for a water droplet to accumulate on the upper surface of the protrusion part arrange | positioned so that a partition plate may be penetrated, progress of corrosion of a protrusion part can be prevented.

  Further, here, the upper surface of the protruding portion is inclined so that the downstream side of the air flow is lower than the upstream side. For this reason, the water droplet adhering to the upper surface of the protrusion is pressed along the inclination of the protrusion by air.

  Thereby, since it becomes difficult for water droplets to further accumulate on the upper surface of the protruding portion, the progress of corrosion of the protruding portion can be prevented.

  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 second aspect of the present invention, and the partition plate has a curved sectional shape in plan view.

  For this reason, in the electrical component unit supported by the partition plate having a curved cross-sectional shape in plan view, it is difficult for water droplets to accumulate on the upper surface of the protruding portion, so that the progress of corrosion of the protruding portion can be prevented.

  According to the electrical component unit of the air conditioner according to the first aspect of the present invention, it is possible to prevent the progress of corrosion at the protruding portion while suppressing an increase in the manufacturing cost of the electrical component unit, as compared with the case where a measure for preventing corrosion is taken separately. it can.

  According to the outdoor unit of the air conditioner according to the second aspect of the present invention, it is possible to prevent the progress of corrosion at the protruding portion while suppressing an increase in the manufacturing cost of the electrical component unit, as compared with the case where a corrosion prevention measure is separately taken. .

  According to the outdoor unit of the air conditioner according to the third aspect of the present invention, water droplets are unlikely to collect on the upper surface of the protruding portion, so that the corrosion of the protruding portion can be prevented.

  It will be as follows if the outdoor unit 1 of the air conditioning apparatus which concerns on one Embodiment of this invention is demonstrated using FIGS.

<Configuration of outdoor unit 1 as a whole>
The outdoor unit 1 is installed outside and is a so-called trunk type outdoor unit as shown in FIGS.

  The outdoor unit 1 mainly includes a unit casing 2, a refrigerant circuit component 3, a fan 11, and an electrical component unit 45. The outdoor unit 1 sucks outside air (air) into the inside from the back and left sides of the outdoor unit 1 and exchanges heat between the sucked air and the refrigerant. Further, the outdoor unit 1 exhausts the heat-exchanged air from the front.

<Unit casing 2>
The unit casing 2 is formed in a substantially rectangular parallelepiped shape as shown in FIGS. 1 and 2, and as shown in FIG. 3 or FIG. 4, mainly the refrigerant circuit component 3, the fan 11, and the electrical component unit. 45 are stored. The unit casing 2 includes a bottom plate 21, a left front plate 22a, an upper left front plate 22b, a right front plate 22c, a right side plate 23a, an upper right side plate 23b, and a top plate 28.

  As shown in FIGS. 1 and 3, the front surface of the unit casing 2 is formed by a left front plate 22 a and an upper left front plate 22 b from the left side end in a front view to a slightly rightward center portion. Further, the right front plate 22c forms a part from the center part slightly to the right side to the right end.

  The left front plate 22a is formed in a substantially L shape in plan view, and is disposed from the left side surface of the outdoor unit 1 to the front surface. The left front plate 22a is provided with two outlets 27 formed in a circular shape on the front side so as to be arranged in the vertical direction. The two air outlets 27 allow air taken in from the back (detailed in the subsequent stage) side and the left side (detailed in the subsequent stage) side of the unit casing 2 by the fan 11 (detailed in the subsequent stage). An opening for exhausting to the outside.

  The upper left front plate 22b is a metal panel that is formed in a substantially L shape in plan view and extends in the vertical direction, and is disposed directly above the left front plate 22a.

  The right front plate 22c is disposed on the right side in the front view of the outdoor unit 1, and is formed in a substantially L shape in the plan view. The right front plate 22c is bent at the right end in the front view of the outdoor unit 1 and extends to the back side, and forms the front side of the right side surface of the unit casing 2 described in detail later.

  As shown in FIGS. 1 and 3, the left side surface of the unit casing 2 is formed by bending the left front plate 22a and the upper left front plate 22b at the left end of the outdoor unit 1 and extending rearward in a front view. . Note that a rectangular air suction port 24a that is long in the front-rear direction (the direction from the front side to the back side) is provided on the left side surface of the unit casing 2 side by side in the vertical direction.

  As shown in FIGS. 2 and 3, the right side surface of the unit casing 2 is formed on the front side by a right front plate 22c extending from the right end in the front view of the outdoor unit 1, and further, the right side plate 23a and the upper right side plate 23b. Thus, the back side is formed.

  Here, as shown in FIG. 2, a part of the right side portion of the back surface of the outdoor unit 1 is formed by the right side plate 23a and the upper right side plate 23b. An opening space is provided between the remaining back surface portion of the outdoor unit 1, that is, the back side edge of the left side surface of the unit casing 2, and the back side edges of the right side plate 23a and the upper right side plate 23b. Is formed.

  In addition, the heat exchanger 30 (detailed in the latter part) is arrange | positioned so that the back side may be exposed to the said opening space.

  As shown in FIG. 3, the partition plate 25 is a metal partition member that is formed in an arc shape in a plan view and extends in the vertical direction. And the partition plate 25 is arrange | positioned so that the interior space of the unit casing 2 may be divided into left air blower room SP1 and right machine room SP2 as shown in FIG. Moreover, as shown in FIG. 7, the partition plate 25 is formed with an opening space 25a in the upper part for exposing the electrical component unit 45, which will be described in detail later, to the blower chamber SP1 side.

  The tube plate 26 is a metal plate-like member provided so as to correspond to the end surface on the back side of the heat exchanger 30.

<Fan 11>
As shown in FIG. 3, the fan 11 is a propeller fan having a plurality of blades, and faces the outlet 27 to the support member 12 on the front side of the heat exchanger 30 in the blower chamber SP1 (see FIG. 4). Two are mounted side by side in the vertical direction. When the fan 11 is rotationally driven, the inside of the outdoor unit 1 is in a negative pressure state, and an air flow from the back surface or the left side surface of the unit casing 2 toward the front surface of the unit casing 2 is generated. And the air which passed the heat exchanger 30 (it explains in full detail in the back | latter stage) by the said air flow blows off from the blower outlet 27 of the left front board 22a to the exterior.

<Refrigerant circuit component 3>
As shown in FIGS. 3 and 4, the refrigerant circuit component 3 includes a heat exchanger 30, a compressor 40, a receiver 41, a four-way switching valve 42, closing valves 37 and 38, and the like.

  The heat exchanger 30 is a substantially L-shaped heat exchanger arranged along the back surface from the left side surface of the unit casing 2 in the blower chamber SP1. The heat exchanger 30 includes a first heat exchange unit 31 and a second heat exchange unit 32.

  The first heat exchange unit 31 is formed such that the height in the vertical direction is substantially the same as that of the left front plate 22a.

  The second heat exchanging part 32 is arranged immediately above the first heat exchanging part 31, and is formed so that the height in the vertical direction is substantially the same as the upper left front plate 22b.

  Here, the first heat exchange unit 31 and the second heat exchange unit 32 generate heat between the refrigerant flowing through the interior and the air when the air sucked in from the left side or the back side of the outdoor unit 1 passes through. Let the exchange take place.

<Electrical component unit 45>
The electrical component unit 45 is disposed in the upper part of the machine room SP2 (see FIG. 4), and includes an outer plate (plate member) 50, a protrusion 50a, and a sheet metal 55 as shown in FIG. ing. Moreover, the weight of the electrical component unit 45 is about 10 kg.

  As shown in FIG. 4, the outer plate 50 is a rectangular sheet metal that is disposed so as to face the opening space 25a (see FIG. 7) and extends in the vertical direction (see FIG. 5). And as shown in FIG. 5, the outer plate | board 50 has the opening part 50b formed in the center part.

As shown in FIG. 7, the protrusion 50 a is a plate-like member that protrudes substantially horizontally from the lower end of the outer plate 50 toward the blower chamber SP <b> 1, and includes an upper surface 50 c. Further, as shown in FIG. 6, the upper surface 50 c is inclined at an angle α downward with respect to the direction from the back surface to the front surface of the unit casing 2 as viewed from the left side surface of the unit casing 2. It arrange | positions so that the downstream of the flow may become lower than the upstream. (The upper surface 50c can also be expressed as being inclined in the vertical direction with respect to the direction connecting both ends of the outer plate 50 shown in FIG. 5 in plan view.)
For this reason, the water droplets adhering to the upper surface 50c are likely to flow downward, and the progress of corrosion in the protrusion 50a can be suppressed.

  When the operator attaches the electrical component unit 45 to the partition plate 25, the electrical component unit 45 is supported by the partition plate 25 by hooking the protrusion 50a to the lower end of the opening space 25a, so that the electrical component is moved to a predetermined position. The operation of attaching the unit 45 can be easily performed.

  Further, by providing the protruding portion 50a in the electrical component unit 45, there is an effect that the electrical component unit 45 can be easily positioned when the operator attaches the electrical component unit 45 to the partition plate 25.

  The opening 50b is formed in the central portion of the outer plate 50, and is an opening through which the heat sinks 51b and 51c (described in detail later) penetrate to the blower chamber SP1 side.

  A driving P plate 51 a (see FIG. 4) is attached to the inside of the outer plate 50. The driving P plate 51a is mounted with an inverter circuit for driving the compressor 40, the fan 11, and the like. The driving P plate 51a is mounted with a heat sink 51b (see FIG. 5) for cooling the power transistors forming these inverter circuits and a heat sink 51c (see FIG. 5).

  As shown in FIG. 5, the heat sink 51b is disposed so as to penetrate the central portion of the outer plate 50 toward the blower chamber SP1, and is formed by arranging a plurality of heat radiation fins. The heat sink 51b cools electronic components such as a power transistor that forms an inverter circuit that drives the compressor 40.

  As shown in FIG. 5, the heat sink 51 c is disposed so as to penetrate the lower part of the outer plate 50 toward the blower chamber SP <b> 1, and is formed by arranging a plurality of heat radiating fins. The heat sink 51c cools electronic components such as a power transistor that forms an inverter circuit that drives the fan 11.

  As shown in FIG. 4, the sheet metal 55 is disposed so as to face the front surface of the unit casing 2, and extends in the vertical direction. Further, the left end of the sheet metal 55 is connected to the outer plate 50. The sheet metal 55 is mounted with a control P plate mounted with electronic components and the like forming a control circuit for performing operation control so as to face the front of the unit casing 2.

<Characteristics of electrical component unit 45>
(1)
In the outdoor unit 1 of this embodiment, as shown in FIG. 6, the electrical component unit 45 includes an outer plate 50 and a protruding portion 50a. The outer plate 50 extends in the vertical direction. The protrusion 50a protrudes from the lower part of the outer plate 50 toward the blower chamber SP1. The upper surface 50c of the protruding portion 50a is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the outer plate 50 in plan view.

  Here, the upper surface 50c of the protruding portion 50a is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the outer plate 50 in plan view. For this reason, the water droplets adhering to the upper surface 50c of the protrusion 50a are likely to flow downward.

  This makes it difficult for water droplets to accumulate on the upper surface 50c of the protrusion 50a, thereby preventing the protrusion 50a from proceeding with corrosion.

  As a result, the progress of the corrosion of the protrusion 50a can be prevented while suppressing an increase in the manufacturing cost of the electrical component unit 45, compared with the case where a corrosion prevention measure such as using a galvalume steel plate is separately taken.

(2)
As shown in FIG. 3, the outdoor unit 1 of the air conditioner of the present embodiment includes a unit casing 2, a partition plate 25, a fan 11, a heat exchanger 30, and an electrical component unit 45. . The partition plate 25 extends in the vertical direction so as to partition the inside of the casing into the fan chamber SP1 and the machine chamber SP2. The fan 11 is disposed in the blower chamber SP1 and generates an air flow. The heat exchanger 30 is disposed in the blower chamber SP1 and causes heat exchange between the refrigerant flowing in the interior and the air when the air passes through. The electrical component unit 45 is supported by the partition plate 25 and includes an outer plate 50 and a protruding portion 50a. The outer plate 50 extends in the vertical direction. The protrusion 50a protrudes from the lower part of the outer plate 50 toward the blower chamber SP1. The upper surface 50c of the protruding portion 50a is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the outer plate 50 in plan view.

  Thereby, in the outdoor unit 1, water droplets attached to the upper surface 50c are likely to flow downward.

  This makes it difficult for water droplets to accumulate on the upper surface 50c, and thus prevents the protrusion 50a from proceeding with corrosion.

(3)
In the outdoor unit 1 of the air-conditioning apparatus of the present embodiment, as shown in FIG. 7, the protruding portion 50a penetrates the partition plate 25 and protrudes toward the blower chamber SP1.

  Here, the protruding portion 50 a protrudes through the partition plate 25. For this reason, it becomes difficult for water droplets to accumulate on the upper surface of the protruding portion 50a disposed so as to penetrate the partition plate 25, and the progress of corrosion of the protruding portion 50a can be prevented.

(4)
In the outdoor unit 1 of the air conditioner of this embodiment, as shown in FIG. 6, the upper surface 50c is lower on the downstream side of the air flow than on the upstream side.

  Here, the upper surface 50c is inclined so that the downstream side (front side of the unit casing 2) of the air flow is lower than the upstream side (back side of the unit casing 2). For this reason, it becomes difficult for water to further accumulate on the upper surface 50c, so that the progress of the corrosion of the protrusion 50a can be prevented.

(5)
In the outdoor unit 1 of the air-conditioning apparatus of the present embodiment, as shown in FIG. 3, the partition plate 25 is formed in an arc shape in cross section in plan view.

  For this reason, in the electrical component unit 45 supported by the partition plate 25 having a cross-sectional shape formed in an arc shape in plan view, water does not easily accumulate on the upper surface 50c, so that the corrosion of the protruding portion 50a can be prevented. .

<Other embodiments>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the above-described embodiment, as illustrated in FIG. 6, the upper surface 50 c of the protruding portion 50 a has been described with an example in which the upper surface 50 c is inclined in the vertical direction with respect to the direction connecting both side ends of the outer plate 50 in plan view. However, the present invention is not limited to this.

  For example, when there is no problem in the workability of the assembling work of the electrical component unit 45, the upper surface 50c is disposed so as to be inclined downward with respect to the direction orthogonal to the direction connecting both side ends of the outer plate 50 in plan view. You may do it.

  Also in this case, the same effect as the electrical component unit 45 according to the above embodiment can be obtained.

(B)
In the above embodiment, the example in which the outdoor unit 1 includes the electrical component unit 45 has been described. However, the present invention is not limited to this.

  For example, the electrical component unit 45 may be provided in an indoor unit of the air conditioner.

  Also in this case, the same effect as the electrical component unit 45 according to the above embodiment can be obtained in the indoor unit of the air conditioner.

(C)
In the above embodiment, as illustrated in FIG. 6, the upper surface 50c has been described with an example in which the upper surface 50c is arranged so that the downstream side of the air flow is lower than the upstream side. However, the present invention is not limited to this.

  For example, the upper surface 50c may be disposed so as to be substantially horizontal with the air flow.

  Also in this case, the same effect as the electrical component unit 45 according to the above embodiment can be obtained.

  However, in this case, the water adhering to the upper surface 50c may be less likely to flow downward than when the upper surface 50c is inclined as in the above embodiment. For this reason, it is more preferable to incline the upper surface 50c like the said embodiment.

(D)
In the said embodiment, as shown in FIG. 3, the partition plate 25 demonstrated and demonstrated the example in which the cross-sectional shape in planar view was formed in arc shape. However, the present invention is not limited to this.

  For example, the cross-sectional shape of the partition plate 25 in plan view may be a rectangular shape.

  Also in this case, the same effect as the electrical component unit 45 according to the above embodiment can be obtained.

  The electric component unit of the air conditioner of the present invention has an effect of preventing the progress of corrosion without increasing the manufacturing cost. Therefore, the electric component unit of the air conditioner and the outdoor unit of the air conditioner including the same are provided. Widely applicable.

The perspective view which shows the external appearance of the front side of the outdoor unit of the air conditioning apparatus which concerns on one Embodiment of this invention. The perspective view which shows the external appearance of the back side of the outdoor unit of the air conditioning apparatus shown in FIG. The exploded view which shows the internal structure of the outdoor unit of the air conditioning apparatus shown in FIG. The exploded view which shows the state in which the partition plate was attached in the outdoor unit of the air conditioning apparatus shown in FIG. The perspective view which shows the structure of the electrical equipment unit of the air conditioning apparatus contained in FIG. The side view which shows the state of the electrical equipment unit attached to the partition plate seen from the air blower room side in the outdoor unit of the air conditioning apparatus shown in FIG. The perspective view which shows the state seen from the front side of the electrical equipment unit attached to the partition plate shown in FIG.

1 outdoor unit (air conditioner outdoor unit)
2 Unit casing 3 Refrigerant circuit component 11 Fan 25 Partition plate 25a Opening space 30 Heat exchanger 45 Electrical component unit 50 Outer plate (plate member)
50a Projection 50b Opening 50c Upper surface 51a Driving P plate 51b, 51c Heat sink SP1 Blower chamber SP2 Machine chamber

Claims (3)

An electrical component unit of an air conditioner including a fan (11) that is attached to face a bell mouth shaped opening (27) formed in a front plate (22a) and generates an air flow,
A plate-like member (50) extending in the vertical direction;
It protrudes outward from the lower part of the plate-like member, and cuts from the downstream side to the upstream side of the air flow so that a part of the plate-like member and the opening are overlapped in a side view. A missing protrusion (50a);
With
The upper surface (50c) of the protrusion is formed so as to be inclined in the vertical direction with respect to the direction connecting both ends of the plate-like member in plan view, and the downstream side of the air flow is more upstream than the upstream side. Is also lower,
The electrical component unit (45) of the air conditioner. A casing (2);
A partition plate (25) extending in the vertical direction so as to partition the inside of the casing into a fan chamber (SP1) and a machine chamber (SP2);
A fan (11) that is attached to face the bell mouth shaped opening (27) formed in the front plate (22a) and generates an air flow disposed in the blower chamber;
A heat exchanger (30) disposed in the blower chamber and performing heat exchange between the air flowing through the refrigerant and the air when the air passes through;
A plate-like member (50) supported by the partition plate and extending outward from the lower portion of the plate-like member, and a part of the plate-like member and the opening overlap in a side view. And a protrusion (50a) cut out from the downstream side to the upstream side of the air flow so that the upper surface (50c) of the protrusion is at both ends of the plate member in plan view. An electrical component unit (45) of an air conditioner that is formed so as to be inclined in the vertical direction with respect to the direction of connecting
With
The projecting portion penetrates the partition plate and projects into the blower chamber,
The upper surface of the protrusion is lower on the downstream side of the air flow than on the upstream side,
Air conditioner outdoor unit (1). The partition plate has a curved cross-sectional shape in plan view,
The outdoor unit (1) of the air conditioning apparatus according to claim 2.

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