JP2010121857A - Outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor unit with a structure, securely preventing entry of water and insects while efficiently releasing heat of air inside an electric component box of a large air conditioner. <P>SOLUTION: An air suction panel of a cooling air duct including a plurality of air suction ports 531 for taking in air is arranged on the bottom of the electric component box 5, and an air discharge port 55 for discharging air is provided in the upper part of the electric component box 5, so as to guide the taken-in air to the back face side of a substrate P. The outdoor unit includes a seal member for sealing a gap between the body of the electric component box and the lower end side of a lid body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner having a large casing having an air inlet on a side surface and an air outlet and a fan on an upper surface, and more specifically, an electrical component attached to the casing. It relates to the technology to release the heat trapped in the box.

  A large air conditioner outdoor unit installed in a building or commercial facility houses a large heat exchanger unit in a housing, and an air inlet is provided on the side surface surrounding the heat exchanger unit. An air outlet and a fan are used.

  Usually, an outdoor unit houses an electrical component box including a control board for controlling a compressor, a motor, and the like. The electrical component box contains a control board on which various electronic components are mounted, as well as a transformer and relay switch. However, since these electronic components generate heat, heat must be released outside the electrical component box. .

  On the other hand, since the outdoor unit is arranged outdoors, small animals such as insects and geckos get into the electrical component box in search of a warm place, causing a short circuit by touching the substrate.

  Therefore, in order to prevent insects and water from entering the electrical component box, for example, in Patent Document 1, a small vent is provided in a part of the electrical component box to prevent insects and the like from entering. In addition, a separator is provided at the tip of the vent so that mist-shaped water does not enter the interior, and air is blown against the separator to separate the water.

  However, in the prior art, there are electrical component boxes in consideration of heat dissipation, waterproofing, insect prevention, and the like, but none can be directly applied to the electrical component box attached to the outdoor unit.

JP 2008-116123 A

  Therefore, in order to solve the above-described problems, the object of the present invention is to provide an air conditioner having a waterproof and insect-proof structure while efficiently dissipating the air inside the electrical component box in a large air conditioner. It is to provide an outdoor unit of the machine.

  In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 includes a housing having a side surface as an air inlet, a heat exchanger provided along the air inlet, and having an air outlet and a fan on an upper surface. Is provided with an electrical component box having a box body whose front surface is opened and a lid that closes the opening, and a control board is provided inside the electrical component box. In the outdoor unit of the air conditioner arranged along the side surface of the electric component box, an air inlet for taking air into the electric component box is provided at the bottom of the electric component box, and the upper part of the electric component box. Is provided with an exhaust port for discharging air, and an air guide plate is provided on an extension of the axis of the intake port.

  According to a second aspect of the present invention, in the first aspect, the intake port is formed in an elliptical shape, and the plurality of intake ports are arranged in a straight line at predetermined intervals. Yes.

  A third aspect of the present invention is characterized in that, in the first or second aspect, the exhaust port comprises a gap formed between the box body and the lid.

  According to a fourth aspect of the present invention, in the first, second, or third aspect, a sealing material is provided on the lower end side of the lid to seal a gap between the box body. It is a feature.

  According to the first aspect of the present invention, the air inlet is provided on the back side of the bottom of the electrical component box, the exhaust port is provided on the front side of the upper part, and the air guide plate is provided on the extension line of the axis of the air inlet of the box body. By providing it, the air that has entered the electrical component box through the air inlet is applied to the wind guide plate, and then guided into the electrical component box, thereby separating the water that is about to enter along with the air. Can do.

  According to the second aspect of the present invention, the air inlets are formed in an elliptical shape and arranged in a straight line at a predetermined interval, thereby ensuring the invasion of small animals such as insects while ensuring air permeability. Can be prevented.

  According to the invention described in claim 3, since the gap formed between the box body and the lid is used as an exhaust port, not only can the air be ventilated throughout the electrical component box, but also the machine Since no special processing is required, useless processes can be omitted.

  According to the invention described in claim 4, by providing a sealing material for sealing the gap between the box body on the lower end side of the lid, by closing the gap on the lower end side other than the intake port, Air can be sucked into only the air intake, and intrusion of small animals and water is surely prevented.

  Next, embodiments of the present invention will be described with reference to the drawings. In addition, a present Example is only an Example and embodiment of this invention is not limited to this invention. 1a is a perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention, and FIG. 1b is a front view of the outdoor unit in a state where an electrical component box appears with the access panel removed, FIG. FIG. 3 is an enlarged perspective view of a state where an electrical component box is rotated. FIG. 2 is a perspective view showing a state where the access panel of the outdoor unit is removed and the electrical component box is opened. 3 is an exploded perspective view of the electrical component box, FIG. 4 is a central longitudinal sectional view of the electrical component box, and FIG. 5 is a bottom view of the electrical component box as viewed from the bottom side.

  As shown in FIG. 1a and FIG. 2, the outdoor unit 1 of this air conditioner has a large and vertically disposed casing 10, and the side surface of the casing 10 has air suction for taking air into the interior. A mouth 11 is provided. Inside the housing 10, the heat exchanger unit 2 is disposed along the air suction port 11.

  In this example, the heat exchanger unit 2 is formed by assembling a heat exchanger formed in a U-shape when viewed from above in two upper and lower stages, and is arranged along the inner peripheral surface of the housing 10. Yes. In the present invention, the configuration of the heat exchanger unit 2 may be arbitrary, and the shape and configuration thereof may be arbitrarily selected according to specifications.

  A fan 3 is disposed on the upper portion of the housing 10, and an air outlet 12 is formed so as to surround the fan 3. According to this, the air sucked into the housing 10 from the air suction port 11 through the heat exchanger 2 is exhausted from the air outlet 12 at the upper portion of the housing through the fan 3.

  Of the four side surfaces of the housing 10, air suction ports 11 are formed at three locations, and the remaining one side surface has an access panel 4 that is opened and closed when the inside of the housing 10 is maintained. , 4 are provided.

  As shown in FIGS. 1 a and 1 b, the access panels 4 and 4 are metal plates that are divided into upper and lower parts with respect to the housing 10, and each of them is screwed to the housing 10. When the access panel 4 on the upper side is removed, an electrical component box 5 provided in the housing 10 appears. When the access panel 4 on the lower side is opened, a refrigeration cycle unit 6 including a compressor installed in the housing 10 and its pipings appears.

  In the present invention, the specific configuration of the refrigeration cycle unit 6 is arbitrary, and if used as a refrigeration cycle for an air conditioner, those configurations can be freely configured according to specifications.

  The electrical component box 5 is rotatably supported by a frame (not shown) of the housing 10 so that one side surface is rotatably supported by cantilever hinges 7 and 8 and the other side surface is opened and closed like a hinged door as a free end. ing.

  As shown in FIG. 1c, in a normal state (when the air conditioner is used), the electrical component box 5 has a hook portion 561 provided on a support plate 56 installed on the upper side of the electrical component box 5. By hooking the hook portion 561 into the suspension hole 14 provided in the frame 13 of the housing 10, the hook portion 561 is held in a suspended state and is further screwed.

  As shown in FIGS. 3 and 4, the electrical component box 5 includes a box main body 51 whose front and bottom surfaces are opened, a lid 52 attached so as to close the opening of the box main body 51, and the box main body 51. And an air guide plate 53 attached to a part of the opening at the bottom. In this example, the box body 51, the lid body 52, and the air guide plate 53 are formed of a galvanized steel sheet.

  The box body 51 has a back panel 511, a top panel 512, and two side panels 513 and 513, and the board P is arranged inside the casing 10 so as to be parallel to the side face. A locking plate 514 bent in an L shape is formed on the lower end side of the back panel 511. The top ends of the top panel 512 and the side panels 513 and 513 are also bent at a substantially right angle so that the lid 52 is fixed.

  The lid body 52 is formed in a plate shape having a size that covers the front opening of the box body 51. A bent portion 521 that is bent in an L shape is formed on the lower end side of the lid 52, and the sealing material 54 is integrally bonded along the bent portion 521.

  The sealing material 54 has, for example, a bar shape with a square cross section made of a synthetic resin such as polyethylene or polystyrene, and is attached along the inner surface of the bent portion 521 via a double-sided adhesive tape or an adhesive. As a more preferred embodiment, the sealing material 54 is preferably a foam.

  According to this, the lower surface opening of the electrical component box 5 is reliably closed by the front surface (right side surface in FIG. 4) of the sealing material 54 coming into contact with the outer surface of the guide plate 532 of the air guide plate 53 described later. In addition, it is possible to prevent the electrical component box 5 from generating chatter noise due to motor vibration or the like. Furthermore, since the sealing material 54 is in close contact with a cable (not shown) drawn from between the air guide plate 53 and the sealing material 54, it is possible to more reliably block insects and the like by closing the gap between the cables.

  The air guide plate 53 has an intake panel 532 that stands substantially vertically from the rear panel 511 of the box body 51, and an intake port 531 is formed in the intake panel 532. Referring also to FIG. 5, a large number of intake ports 531 are formed at predetermined intervals along the extending direction of the intake panel 532 (the left-right direction in FIG. 5).

  Each intake port 531 is preferably formed in a size that prevents insects and small animals from entering, for example, a diameter of 6 mm or less, and more preferably a small oval shape (short axis is 6 mm or less). According to this, air can be taken into the electrical component box while reliably preventing small animals from entering.

  Further, since each intake port 531 is opened in a horizontally long (horizontal direction in the figure) oval shape, the length of the intake panel 532 in the width direction (vertical direction in FIG. 5) can be shortened. 51 can be made compact, and can also contribute to reduction of materials.

  The air guide plate 53 is provided with a guide portion 533 that guides air sucked from the air inlet 531 to the back side of the substrate P. The guide portion 533 is formed so that a part of the guide portion 533 extends on the extension line of the axis of the intake port 531, and the air that has entered from the intake port 531 collides with the guide portion 533, so that the air flows during rain or the like. It is possible not only to separate mist-like water contained in the water, but also to keep the air flow rate constant.

  The exhaust port 55 exhausts air using a gap formed between the top panel 512 and the lid body 52. It is preferable that the gap has a size effective for preventing small animals and insects from entering, for example, 3 mm or less. According to this, air can be exhausted from the exhaust port 55 without waste, and mechanical processing is not required for forming the exhaust port 55, so that a wasteful process can be omitted.

  By using the electrical component box 5 as described above, the air taken into the electrical component box 5 through the air guide plate 53 absorbs heat in the electrical component box 5 and is contained in the electrical component box 5. And finally exhausted out of the box from an exhaust port 55 formed in the upper front portion of the electrical component box 5.

  According to this, cold air is sucked from the lower part of the electrical component box 5 by natural convection of air, and air warmed by the electrical components is exhausted from the upper part of the electrical component box 5, so that the cooling efficiency is good, and Invasion of small animals and water can be prevented more reliably.

The perspective view of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention. The front view of the said outdoor unit of the state which removed the access panel and the electrical component box appeared. The expansion perspective view of the state where the electrical component box was rotated. The perspective view of the state which removed the access panel of the said outdoor unit and opened the electrical component box. The disassembled perspective view which abbreviate | omitted a part of said electrical component box. The center longitudinal cross-sectional view of the said electrical component box. The schematic diagram of the state which looked at the said electrical component box from the bottom face side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outdoor unit 10 Case 11 Air inlet 12 Air outlet 2 Heat exchanger unit 3 Fan 4 Access panel 5 Electrical component box 51 Box body 52 Lid 53 Wind guide plate 54 Seal material 6 Refrigeration cycle unit

Claims (4)

A side surface is an air suction port, a heat exchanger is provided along the air suction port, and includes a housing having an air outlet and a fan on an upper surface. An electrical component box having a box main body and a lid that closes the opening is provided, and a control board is disposed along the side surface of the casing inside the electrical component box. In outdoor unit of air conditioner,
An intake port for taking air into the electrical component box is provided at the bottom of the electrical component box, and an exhaust port for exhausting air is provided at the top of the electrical component box. An outdoor unit for an air conditioner, wherein an air guide plate is provided on an extension of the axis of the air conditioner.   The outdoor unit for an air conditioner according to claim 1, wherein the intake port is formed in an elliptical shape, and the plurality of intake ports are arranged in a straight line at predetermined intervals.   The outdoor unit for an air conditioner according to claim 1 or 2, wherein the exhaust port includes a gap formed between the box body and the lid.   The outdoor unit for an air conditioner according to claim 1, 2 or 3, wherein a sealing material for sealing a gap between the lid body and the box body is provided on a lower end side of the lid. .

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