JP2009257694A - Outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit for an air conditioner, which easily prevents failures caused by intrusion of small animals into an electrical component box, at low cost, without impairing the air-cooling characteristics of electrical components in the electrical component box. <P>SOLUTION: This outdoor unit 1 for the air conditioner includes: a casing 2; a compressor 3 arranged in a machine room sectioned by a diaphragm partitioning the inside of the casing 2; a heat exchanger 4 and a blower 5 arranged in a heat exchanging chamber; and the electrical component box 6, provided on the casing 2 and storing the electrical components for controlling the compressor 3 and blower 5. A mesh small animal guard 7 that covers the side of the machine room is fitted around the electrical component box 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outdoor unit for an air conditioner, and more particularly to an outdoor unit for an air conditioner having an improved structure for preventing the entry of small animals.

  In general, an outdoor unit of an air conditioner includes a compressor, a heat exchanger, a blower, and the like, and an electrical component box that houses a plurality of electrical components (including electronic components) for controlling them in a casing. The body is partitioned into a machine room for storing the compressor by a partition plate that is divided in the horizontal direction and a heat exchange chamber for storing the heat exchanger and the blower, and straddles the machine room and the heat exchange chamber at an upper position in the housing. An electrical component box is arranged.

  In the electrical component box, each electrical component is mounted on a control board, and a heat sink is arranged on the heat exchange chamber side so as to be cooled by blowing air from a blower.

  Further, the electrical component box arranged on the machine room side has an opening on the lower surface side so that wiring with the compressor and connection wiring with the indoor unit side are extended from the inside to the outside.

  In such an outdoor unit, since the machine room in the casing is warm during energization even in winter, small animals such as geckos prefer to enter the machine room in a relatively warm area. A small animal may enter the inside through the opening, causing a short circuit in the connection part of the electrical component and the wiring part of the control board, causing the outdoor unit to malfunction.

As countermeasures, there have been proposed techniques for resin-sealing the entire control board, means for sealing the gaps in the structure, and increasing the sealing degree of the entire machine room (for example, see Patent Document 1).
JP 2000-88281 A

  However, with the means for resin-sealing the entire control board as in Patent Document 1, the air-cooling characteristics of the electrical components are reduced, and the manufacturing process is increased, resulting in an increase in cost. Even a technique for increasing the degree of sealing of the entire room increases the cost and does not completely prevent the invasion of small animals.

  The present invention has been made to solve the above-described problems, and easily prevents a failure caused by the entry of a small animal into the electrical component box at low cost without impairing the air cooling characteristics of the electrical component in the electrical component box. An object of the present invention is to provide an outdoor unit of an air conditioner that can be used.

  In order to achieve the above-described object, an outdoor unit of an air conditioner according to the present invention includes a housing, a machine room that houses a compressor with a partition plate that divides the inside of the housing in a lateral direction, a heat exchanger, and a blower An air conditioner comprising: an electrical component box that houses an electrical component for controlling the compressor and the blower, and is disposed at least in an upper part of the machine chamber in the housing. In the outdoor unit, the electrical component box is extrapolated with a cylindrical net-like small animal guard that covers at least the outer periphery of the electrical component box located on the machine room side and is provided with one side opening and the other side opening. The small animal guard is extrapolated from an opening on one side to an electric component box disposed in the machine room, and the edge of the one side opening is fixed by sealing a gap between the outer peripheral surface of the electric component box with a sealing material. And the compression from the other side opening And a configuration to bring out the connection lines for connecting the electrical component and the blower to the outside, the other side opening characterized in that it is closed by members closing together with the connecting line.

  According to the outdoor unit for an air conditioner of the present invention, it is possible to easily prevent a failure due to the entry of a small animal into the electrical component box at a low cost without impairing the air cooling characteristics of the electrical components in the electrical component box. In addition, it is possible to provide an outdoor unit for an air conditioner that can prevent clogging of meshes due to rainwater or dust from a blower.

  An outdoor unit of an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

  1 is an exploded perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of an electrical component box used in the outdoor unit, and FIG. 3 is a partially enlarged perspective view of the outdoor unit. 4 is a perspective view when the small animal guard is attached to the electrical component box, and FIG. 5 is a perspective view after the small animal guard is attached to the electrical component box.

  As shown in FIG.1 and FIG.2, the outdoor unit 1 of the air conditioner which concerns on one Embodiment of this invention is the housing | casing 2 used as the outdoor unit main body, and the compressor 3 provided in this housing | casing 2, A heat exchanger 4 and a blower 5, an electrical component box 6 that houses a plurality of electrical components D that control the compressor 3 and the blower 5, and a net-like small animal guard 7 that covers the electrical component box 6 are provided.

  The casing 2 includes a bottom plate 2a on which the compressor 3, a heat exchanger 4, a blower 5, and the like are placed, a front plate 2b that is erected from the bottom plate 2a and forms a front wall, and a side surface that is erected from the bottom plate 2a. It comprises two side plates 2c and 2d that form walls, and a top plate 2e that covers an upper opening formed by the front plate 2b and the side plates 2c and 2d.

  Further, the housing 2 is divided into a machine room 2A and a heat exchange room 2B by a partition plate 2f erected on the bottom plate 2a.

  The front plate 2b is provided with an air outlet K at a position facing the blower 5, and a fan guard G that covers the air outlet K is provided on the front plate 2b. A packed valve cover C is detachably provided on the side plate 2d.

  The compressor 3 is provided in the machine room 2 </ b> A of the housing 2. In the machine room 2A, in addition to the compressor 3, an accumulator, valves, piping, and the like are also provided. Further, the heat exchanger 4 and the blower 5 are provided in the heat exchange chamber 2 </ b> B of the housing 2. The heat exchanger 4 is provided on the bottom plate 2 a so as to form the back wall of the housing 2, is formed in an L shape in plan view, and surrounds the blower 5 from the back side to the one side of the blower 5. Are arranged as follows. The blower 5 includes a propeller fan 5a provided so as to be rotatable around an axis, and a fan motor 5b that rotates the propeller fan 5a. The fan motor 5b rotates the propeller fan 5a toward the outlet K. Performs a blowing operation to send wind.

  The electrical component box 6 includes a control board 6a on which each electrical component D is mounted, a frame-like support body 6b that supports the control board 6a on the inside, and a lid-like top plate 6c provided on the support body 6b. And a component box body 6d that covers each electrical component D on the control board 6a. The electrical component box 6 is a box that is partially opened on the machine room 2A side.

  The control board 6a is, for example, a printed wiring board, and on the control board 6a, for example, an electric field capacitor, a connector, and a faston terminal are mounted as each electrical component D. These connectors and faston terminals are arranged on the opening (not shown) side of the electrical component box 6. Further, a power transistor module or the like having heat radiation fins F is mounted on the control board 6a, and heat radiation fins of heat sinks are arranged on the heat exchange chamber side of the electrical component box 6 to perform heat radiation using the blower 5. .

  Each electrical component D is electrically connected to the compressor 3 and the blower 5 by a plurality of connection lines S such as lead wires. These connection lines S extend from an opening formed on the lower surface side on the machine room 2A side, and are bundled together by a fastening member B1. As the binding member B1, for example, a binding band, a vinyl tape, or the like can be used. Such an electrical component box 6 is positioned between the upper end of the partition plate 2 f and the top plate 2 e and is provided above the compressor 3. A part of the electrical component box 6 is provided in the machine room 2 </ b> A of the casing 2, and a part on the side of the radiation fin F is provided in the heat exchange chamber 2 </ b> B of the casing 2.

  The small animal guard 7 has a net shape (mesh shape), and has a cylindrical shape including one opening 7a and the other opening 7b that face each other.

  As shown in FIG. 3, the small animal guard 7 is extrapolated from the cylindrical one side opening 7a to the electric component box 6 to cover the periphery of the electric chamber 2A of the electric component box 6 and further bundled into one. Each connecting line S is provided so as to exit from the other side opening 7b.

  As shown in FIG. 4, when the small animal guard 7 is mounted on the electrical component box 6, the one-side opening 7a of the small animal guard 7 is inserted into the electrical component box 6 and positioned to allow the margin of incorporation of the edge. The fold 7c is provided so as to provide an excessive portion to be set, and then the periphery is taped to close the small animal guard 7 and the outer peripheral surface of the electric component box 6 so that no gap is generated. In addition to the tape of this example, as a means for closing the gap so as not to be generated, a string may be drawn through the periphery of the opening and drawn to draw a string.

  As shown in FIG. 5, the other side opening 7b of the small animal guard 7 is closed by closing each connection line S penetrating the other side opening 7b with a closing member B2. For the closing of the other side opening 7b by the closing member B2, for example, a sealing means is used in which a string is passed through the periphery of the other side opening 7b and the string is drawn to draw a string. The sealing means may be a sealing means for winding the outer periphery using a binding band, vinyl tape, or the like in addition to the string of this example.

  Moreover, as for the small animal guard 7, as a result of various examinations, it is effective that the mesh size is set within a range of 3 mm to 10 mm. The size of the mesh is a size that can reliably prevent the invasion of small animals of the size of geckos without deteriorating the air-cooling characteristics of each electrical component D as a result of testing. Further, the thickness of the small animal guard 7 is about 1 mm or 2 mm or less, and the structure for attaching the electrical component box 6 (for example, a locking piece, a locking claw, a screw fixing structure, etc.) is changed. It is set to be thin enough to be installed without any problems.

  The small animal guard 7 is made of a resin material such as a polyamide resin or a polyester resin.

  Next, the air conditioning operation of the outdoor unit 1 will be described.

  The air conditioner is configured by a main outdoor unit 1 provided outside and an indoor unit provided in a room such as a home or a building for adjusting the air in the room. The air conditioner blows cold air, air, or warm air into the room according to various operation modes, and adjusts the indoor air temperature, air circulation, and the like.

  The outdoor unit 1 performs an air conditioning operation in cooperation with the indoor unit by driving the compressor 3 and the blower 5. The refrigerant discharged from the compressor 3 or the refrigerant returning to the compressor 3 is heat-exchanged by the heat exchanger 4 by the operation of the outdoor unit 1. The heat exchange in the heat exchanger 4 is performed by the outside air sucked from the back and side surfaces of the housing 2 by driving the blower 5 passing through the heat exchanger 4. The heat exchanged outside air is blown out from the blowout port K of the housing 2 through the fan guard G.

  By such an air conditioning operation, the machine room 2A of the casing 2 is warm even during the energization or after the energization. For this reason, small animals such as geckos prefer to enter the machine room 2A. At this time, since the electrical component box 6 is covered with the net-like small animal guard 7, it is possible to prevent the small animal from entering the electrical component box 6.

  Further, since the net-like small animal guard 7 is used, the air cooling characteristics of the electrical components D inside thereof are maintained, and the influence on the air cooling structure can be suppressed. If the mesh size of the small animal guard 7 is too small, the air cooling characteristics are adversely affected. Therefore, when targeting a small animal such as a gecko, it is preferable to set the mesh size of the small animal guard 7 within a range of 3 mm to 10 mm.

  Moreover, the small animal guard 7 can cover the machine room side part 6a of the electrical component box 6 provided with the opening which allows the entry of the small animals by forming a cylindrical shape. In addition, the net-like small animal guard 7 is thin enough to be attached without changing the structure for attaching the electric component box 6. Thereby, the electrical component box 6 can be attached to a normal structure (for example, a locking piece, a locking claw, a screw fixing structure, or the like) as it is. Furthermore, a small animal guard 7 can be retrofitted, which is suitable for local use.

  As described above, according to the outdoor unit 1 of the present embodiment, by providing the mesh-like small animal guard 7 that covers the machine room side portion 6a of the electrical component box 6, the machine of the electrical component box 6 is provided by the mesh-like small animal guard 7. It is possible to prevent small animals from entering the electric component box 6 in a state where the room side portion 6a is covered and the air cooling characteristics of the electric component D inside thereof are maintained. In addition, the use of the net-like small animal guard 7 makes it possible to reduce costs compared to the case where the entire control board is resin-sealed or the case where the gap is sealed to increase the sealing degree of the entire machine room. The electric component box 6 can be easily covered.

  From these, failure of the outdoor unit 1 due to the entry of a small animal into the electrical component box 6 can be easily prevented at low cost without impairing the air cooling characteristics of the electrical component D in the electrical component box 6.

  Moreover, the small animal guard 7 is provided with the other side opening 7b for drawing out the connection line S which connects the compressor 3 and the air blower 5, and the electrical component D to the outside, and this other side opening 7b is closed together with the connection line S. Since it is blocked by the member B2, the connection line S that needs to be pulled out from the small animal guard 7 can be pulled out. In addition, the other opening 7b for the connection line S is also completely closed. Can be reliably prevented.

  In addition, since the mesh size of the small animal guard 7 is in the range of 3 mm or more and 10 mm or less, the air cooling characteristics can be improved as compared with the case where the mesh size of the small animal guard 7 is smaller than 3 mm, Furthermore, the invasion of small animals as large as geckos can be reliably prevented. This is effective when targeting small animals such as geckos.

  Moreover, in this embodiment, although the small animal guard 7 formed with resin materials, such as a polyamide-type resin and a polyester-type resin, is used, it does not restrict to this, The small animal guard 7 formed with another material is used. You may make it use.

  Further, the outer periphery of the electrical component box 6 is feared by covering with a mesh-like small animal guard 7, weather resistance of the portion protruding to the blower chamber 2 </ b> A side, heat resistance of the contact portion with the radiating aluminum fins, rainwater and the blower 5. The clogging of the mesh due to the dust is prevented by limiting the small animal guard 7 to the machine room 2A side, and the air cooling characteristics of the electrical component D in the electrical component box 6 are not impaired. In addition, entry of small animals into the electrical component box 6 is prevented, and failure due to entry can be prevented.

  According to the outdoor unit of the air conditioner of the present embodiment, it is possible to easily prevent a failure due to the entry of a small animal into the electrical component box at a low cost without impairing the air cooling characteristics of the electrical component in the electrical component box. In addition, an outdoor unit of an air conditioner that can prevent clogging of the mesh due to rainwater or dust from the blower is realized.

The disassembled perspective view of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention. The disassembled perspective view of the electrical component box used for the outdoor unit of the air conditioner which concerns on one Embodiment of this invention. 1 is an enlarged perspective view of a part of an outdoor unit according to an embodiment of the present invention. The perspective view at the time of the small animal guard mounting | wearing used for the outdoor unit of the air conditioner concerning one Embodiment of this invention. The perspective view which shows the mounting state of the small animal guard used for the outdoor unit of implementation of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Outdoor unit, 2 ... Housing, 2f ... Partition plate, 2A ... Machine room, 2B ... Heat exchange chamber, 3 ... Compressor, 4 ... Heat exchanger, 5 ... Blower, 6 ... Electric component box, 7 ... Small animal Guard, 7a ... one side opening, 7b ... other side opening, B2 ... closing member, D ... electrical component, S ... connection line.

Claims (3)

The housing is partitioned into a machine room that houses the compressor by a partition plate that divides the inside of the housing in a horizontal direction, and a heat exchange chamber that houses a heat exchanger and a blower, and at least above the machine room in the housing In an outdoor unit of an air conditioner that is arranged and includes an electrical component box that houses electrical components for controlling the compressor and the blower,
The electrical component box covers at least the outer periphery of the electrical component box located on the machine room side, and a cylindrical mesh-shaped small animal guard provided with one side opening and the other side opening is extrapolated,
The small animal guard is extrapolated from an opening on one side to an electric component box disposed in the machine room, and the edge of the one side opening is fixed by sealing a gap between the outer peripheral surface of the electric component box with a sealing material. The connection line connecting the compressor and the blower and the electrical component from the other side opening is configured to be pulled out to the outside.
The other side opening is closed together with the connecting line by a closing member. The outdoor unit for an air conditioner according to claim 1, wherein the mesh-shaped small animal guard has a mesh size of 3 mm or more and 10 mm or less. The sealing means for closing the edge of the one side opening of the small animal guard is an adhesive tape, and the other side opening is configured such that a string is drawn through the periphery and drawn to draw a string. The outdoor unit of the air conditioner according to claim 1.

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