JP2017083095A - Outdoor machine of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor machine of an air conditioner capable of preventing fire spread to surroundings and enhancing safety even if fire and combustion occur in a machine room.SOLUTION: An outdoor machine of an air conditioner includes: a housing; a partition plate partitioning the housing into a heat exchange room and a machine room; a heat exchanger and an air blower provided in the heat exchange room; a compressor and pipes connected to the compressor, which are provided in the machine room; and a portable grip each provided at both-side surface parts of the housing. All the grips are arranged at positions opposite to the heat exchanger.SELECTED DRAWING: Figure 4

Description

  Embodiments described herein relate generally to an outdoor unit of an air conditioner.

  In an outdoor unit of an air conditioner, the inside of a rectangular box-shaped housing is partitioned into a heat exchange chamber and a machine room by a partition plate, and a heat exchanger and a blower are arranged in the heat exchange chamber. A compressor and piping connected thereto are disposed in the machine room. Moreover, the handle for carrying is provided in the right-and-left both sides part of a housing | casing. The housing and the partition plate are usually formed of a metal plate, and the handle is usually formed of a synthetic resin.

JP-A-5-133571

If the outdoor unit ignites and burns in the machine room for some reason, there is a risk that flame may blow out from the handle part adjacent to the machine room or the handle part may burn and spread to the surroundings.
Accordingly, an outdoor unit of an air conditioner that can prevent the spread of fire to the surroundings and improve safety even if it ignites and burns in the machine room is provided.

  The outdoor unit of the air conditioner in the present embodiment includes a housing, a partition plate that partitions the inside of the housing into a heat exchange chamber and a machine chamber, a heat exchanger and a blower provided in the heat exchange chamber, and the machine A compressor provided in the room, piping connected to the compressor, and carrying handles respectively provided on both side surfaces of the casing. All of the handles are arranged at positions facing the heat exchanger.

External appearance perspective view from the diagonal front of the outdoor unit in one embodiment External perspective view of the outdoor unit from diagonally behind Exploded perspective view of outdoor unit The top view which shows the state which removed the top plate part of the housing, the waterproof cover, and the electric parts box The perspective view of the holder attachment part of the temperature sensor seen from the arrow X direction of FIG. Perspective view of temperature sensor holder The perspective view shown in the state which opened the 1st cover part and the 2nd cover part in the holder of a temperature sensor

  Hereinafter, an outdoor unit of an air conditioner according to an embodiment will be described with reference to the drawings. First, in FIG. 1 to FIG. 3, the casing 2 of the outdoor unit 1 has a rectangular box shape by combining a bottom plate portion 2a, a front plate portion 2b, a left plate portion 2c, a right plate portion 2d, and a top plate portion 2e. The rear surface portion is open. These bottom plate portion 2a, front plate portion 2b, left side plate portion 2c, right side plate portion 2d, and top plate portion 2e are all formed of a metal plate.

  A circular bell mouth 4 serving as a vent of the blower 3 is provided on the front plate portion 2 b of the housing 2. A decorative cover 5 is attached to the front surface of the front plate portion 2 b so as to cover the bell mouth 4. In this case, the decorative cover 5 is made of a synthetic resin, and a plurality of outlets 6 are formed. The left side plate portion 2c is formed with an air inlet 7 composed of a plurality of holes over substantially the entire surface. The rear portion of the left side plate portion 2c partially wraps around the rear surface side of the housing 2, and the intake port 7 is also formed on the rear surface side.

  The right side plate portion 2d is formed with an intake port 8 composed of a plurality of holes in the rear half of the right side plate portion 2d, and no intake port 8 is formed on the front side. The rear portion of the right side plate portion 2d also partially wraps around the rear surface side of the housing 2, and the intake port 8 is also formed on the rear surface side. A side cover 9 is attached to the front side surface where the air inlet 8 is not formed in the right side plate portion 2d from the middle in the vertical direction to the lower side. In this case, the side cover 9 is made of a metal plate and covers a connecting portion such as a pipe to be described later.

  As shown in FIG. 4, a partition plate 10 made of a metal plate is provided in the housing 2, and the housing 2 is partitioned into two spaces by the partition plate 10. The partition plate 10 extends upward from the bottom plate portion 2a, and the front end portion 10a is located on the right side of the bell mouth 4 in the front plate portion 2b and is in contact with the back surface of the front plate portion 2b. The partition plate 10 extends rearward from the back surface of the front plate portion 2b, further changes direction to the right side, and the right end portion 10b extends to the vicinity of the back surface of the middle portion in the front-rear direction of the right plate portion 2d. The heat exchanger 11 is close to the right end 11c. The partition plate 10 has an L shape when viewed from above.

  In the housing 2, a space from the left side to the rear side of the partition plate 10 is defined as a heat exchange chamber 12, and a space surrounded by the partition plate 10, the right portion of the front plate portion 2b, and the front portion of the right plate portion 2d. The machine room 13 is used. As shown in FIG. 4, in the housing 2, the right front space as viewed from above is a machine room 13, and the remaining space is a heat exchange chamber 12.

  In the heat exchange chamber 12, the heat exchanger 11 and the blower 3 are disposed. Of these, the heat exchanger 11 is not shown in detail, but has a configuration including a pipe and a large number of fins, and is installed on the bottom plate portion 2a. The heat exchanger 11 is disposed so that the main body portion 11a extends in the left-right direction along the rear surface of the housing 2 at the rear portion of the heat exchange chamber 12, the left end portion 11b is directed forward via the curved portion 15, and the right end The part 11 c is also directed forward through the curved part 16. The heat exchanger 11 is formed in a flat C shape as viewed from above. The rear surface of the main part 11a of the heat exchanger 11 is exposed from the rear surface of the housing 2 (see FIG. 2).

  The left curved portion 15 in the heat exchanger 11 is curved in an arc shape at a position corresponding to the left rear corner of the housing 2. A triangular gap 17 is formed between the curved portion 15 and the inner surface of the left side plate portion 2c. The left end portion 11b of the heat exchanger 11 extends forward along the inner surface of the left plate portion 2c and reaches the vicinity of the back surface of the front plate portion 2b. Further, the right curved portion 16 is curved in an arc shape at a position corresponding to the right rear corner of the housing 2. A triangular gap 18 is also formed between the curved portion 16 and the inner surface of the right side plate portion 2d. The right end portion 11c of the heat exchanger 11 extends forward along the inner surface of the right side plate portion 2d, but reaches only the vicinity of the middle portion in the front-rear direction of the right side plate portion 2d.

  The blower 3 is disposed in front of the main portion 11a of the heat exchanger 11 and on the left side in the heat exchange chamber 12. On the bottom plate part 2a, a blower support member 19 is installed in front of the main part 11a of the heat exchanger 11, and the blower 3 is attached to the blower support member 19. The blower 3 is configured by a propeller fan whose rotating shaft is directed in the front-rear direction, sucking air from the back side of the housing 2 and blowing it out to the front side. A blade portion of the blower 3 is disposed in the bell mouth 4. In this case, the air passage A formed by the heat exchanger 11 and the blower 3 is in the front-rear direction of the housing 2 as shown in FIG.

  As shown in FIG. 3, the machine room 13 accommodates a compressor 22, a gas-liquid separator 21, and piping 22 including a four-way valve connected thereto. The pipes 22 are provided with a pipe connection on-off valve 23 to which a refrigerant pipe extending from an indoor unit (not shown) is connected. The pipe connection on-off valve 23 is exposed from an opening 24 (see FIG. 3) formed at the front lower portion of the right side plate portion 2d of the housing 2, and is covered with the side cover 9.

  The compressor 20, the gas-liquid separator 21, the four-way valve, and the like include the heat exchanger 11 on the outdoor unit 1 side in the heat exchange chamber 12, the heat exchanger on the indoor unit side provided in the indoor unit (not shown), and the like. Are connected via a refrigerant pipe, thereby constituting a refrigeration cycle.

  A control unit 25 (see FIG. 3) is disposed in the housing 2 so as to be positioned above the partition plate 10. The control unit 25 includes an electric component box 26 whose outer shell is formed of a metal plate, and is arranged so as to cover a part of the heat exchange chamber 12 from above the machine chamber 13. In the electrical component box 26, although not shown, a control board, a control circuit mainly composed of a microcomputer, which is provided on the control board and controls the overall operation of the outdoor unit 1, an inverter circuit, and the like are housed. Yes.

  A waterproof cover 27 is provided on the upper surface of the electrical component box 26. In this case, the waterproof cover 27 is formed of flame-retardant foamed polyethylene, and is disposed between the electrical component box 26 and the top plate 2e so as to cover the electrical component box 26 from above. . The waterproof cover 27 prevents rainwater and the like from entering the electrical component box 26. Further, as another function of the waterproof cover 27, there is also a function as a heat insulating material, and it can be expected to prevent the occurrence of condensation in the electrical component box 26 when the top plate portion 2e is cooled.

  As shown in FIGS. 4 and 5, the temperature sensor 29 (see FIG. 7) is attached to the upper portion of the right side curved portion 16 near the control unit 25 among the left and right curved portions 15, 16 in the heat exchanger 11. A holder 30 is attached. As shown in FIGS. 6 and 7, the holder 30 is made of a synthetic resin, and as shown in FIGS. 6 and 7, a lead wire holding portion 31 that extends in the horizontal direction, and a sensor holding portion 32 that extends downward from the tip portion of the lead wire holding portion 31. Are formed in an L-shape as a whole.

  The lead wire holding portion 31 is provided with a concave lead wire accommodating portion 31a, and a first cover portion 31b for opening and closing the lead wire accommodating portion 31a is integrally provided via a self hinge portion 31c. Yes. In addition, a pair of elastically deformable mounting legs 33 are integrally provided on the lower side of the lead wire holding portion 31, and are positioned between the mounting legs 33 so as to be elastically deformable. Are provided integrally.

  The sensor holding portion 32 is also provided with a concave sensor housing portion 32a, and a second cover portion 32b for opening and closing the sensor housing portion 32a is integrally provided via a self-hinge portion 32c. The sensor housing portion 32a and the second cover portion 32b are formed with a vent hole 35 having a plurality of holes.

  The temperature sensor 29 is for detecting the outside air temperature, and includes a thermistor. As shown in FIG. 7, the temperature sensor 29 is provided at one end of the lead wire 29a. The other end of the lead wire 29 a is connected to a control circuit in the control unit 25.

  In this case, the temperature sensor 29 is attached to the right curved portion 16 of the heat exchanger 11 via the holder 30. First, as shown in FIG. 7, the temperature sensor 29 is housed in the sensor housing portion 32a, the lead wire 29a is housed in the lead wire housing portion 31a, and the first cover portion 31b and the second cover are installed. The part 32b is bent through the self hinge parts 31c and 32c, respectively, to be in a closed state. As a result, the temperature sensor 29 is held by the holder 30.

  Then, with the holder 30 holding the temperature sensor 29 positioned near the upper side of the right bending portion 16 in the heat exchanger 11, the tip of the sensor holding portion 32 is inserted into the gap 18 near the bending portion 16. On the other hand, the bending part 16 is attached to the bending part 16 so as to be sandwiched between the pair of mounting legs 33 of the holder 30. Thereby, the temperature sensor 29 can be attached to the right curved portion 16 in the heat exchanger 11 via the holder 30. At this time, the holder 30 holding the temperature sensor 29 is not in contact with the nearby right side plate portion 2 d in the housing 2. Even when the top plate portion 2e is attached, the holder 30 does not contact the top plate portion 2e because the waterproof cover 27 is interposed.

  Now, in the case 2, carrying handles 38 and 39 are provided on the left side plate portion 2 c and the right side plate portion 2 d which are both side surfaces orthogonal to the air passage A formed by the heat exchanger 11 and the blower 3, respectively. It has been.

  Specifically, the handle 38 on the left side plate portion 2c side is installed at an intermediate portion in the front-rear direction at the upper portion on the outer surface side of the left side plate portion 2c as shown in FIG. It arrange | positions in the position facing the side surface of the left end part 11b from the curved part 15 of the left side in the heat exchanger 11. FIG. Further, as shown in FIG. 4, the handle 39 on the right side plate portion 2d is installed on the rear side which is the upper portion of the intake port 8 in the upper portion on the outer surface side of the right side plate portion 2d, as shown in FIG. The heat exchanger 11 is disposed at a position facing the side surface of the right end portion 11c from the right curved portion 16.

  Therefore, the two left and right handles 38 and 39 are arranged at positions facing the heat exchanger 11 via the left side plate portion 2 c and the right side plate portion 2 d in the housing 2. Further, in this case, the positions of the left handle 38 and the right handle 39 are shifted in the front-rear direction, which is the depth direction, as shown in FIG. In this case, the left and right handles 38 and 39 are both made of synthetic resin.

In the embodiment described above, the following operational effects can be obtained.
In the housing 2 of the outdoor unit 1, the left and right handles 38 and 39 are arranged at positions facing the heat exchanger 11 via the left side plate portion 2c and the right side plate portion 2d, and particularly on the right side. The handle 39 is arranged at a position away from the position adjacent to the machine room 13 to the rear side. Accordingly, the machine room 13 in the housing 2 is made up of a partition plate 10, a bottom plate portion 2 a, a front plate portion 2 b, a right plate portion 2 d, and a control unit 25, each made of a metal plate. The electrical component box 26 surrounds the periphery. For this reason, even if it is ignited and burned in the machine chamber 13 for some reason, it is possible to complete the combustion in the machine chamber 13 only, and the combustion in the machine chamber 13 can be prevented from spreading to other places.

  Accordingly, the right handle 39 close to the machine room 13 can also use synthetic resin parts, and the left and right handles 38, 39 can use synthetic resin parts as in this embodiment. Can do. As a result, it is possible to improve assemblability and workability compared to the case where metal parts are used for the handle.

  The temperature sensor 29 for detecting the outside air temperature is configured to be attached to the right curved portion 16 on the side close to the control unit 25 of the left and right curved portions 15 and 16 of the heat exchanger 11 in the housing 2. According to this, the length of the lead wire 29a of the temperature sensor 29 for connecting to the control unit 25 can be shortened as much as possible, the cost can be suppressed, and the installation property of the temperature sensor 29 can be secured. In addition, since the temperature sensor 29 is housed in the housing 2, the workability during transportation is better than in the case where the temperature sensor 29 is exposed to the outside, and it is difficult to break, and the reliability can be improved.

Since the holder 30 that holds the temperature sensor 29 is fixed to the curved portion 16 of the heat exchanger 11 without being in contact with the housing 2, the assemblability can be improved.
In addition, the holder 30 has a structure in which the temperature sensor 29 can be attached and detached by opening and closing the first cover portion 31b and the second cover portion 32b while being attached to the bending portion 16. According to this, the temperature sensor 29 can be easily replaced, and serviceability can be improved.

  This embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is an outdoor unit, 2 is a housing, 2c is a left side plate (side surface), 2d is a right side plate (side surface), 3 is a blower, 10 is a partition plate, 11 is a heat exchanger, 11a is Main body part, 11b is a left end part, 11c is a right end part, 12 is a heat exchange chamber, 13 is a machine room, 15 and 16 are bending parts, 20 is a compressor, 21 is a gas-liquid separator, 22 is piping, and 25 is Control unit, 26 is an electrical component box, 27 is a waterproof cover, 29 is a temperature sensor, 29a is a lead wire, 30 is a holder, 31 is a lead wire holding portion, 31a is a lead wire accommodating portion, 31b is a first cover portion, 31c Is a self-hinge part, 32 is a sensor holding part, 32a is a sensor housing part, 32b is a second cover part, 32c is a self-hinge part, 33 is a mounting leg, 35 is a vent, and 38 and 39 are handles.

Claims (5)

A housing constituting the outer shell;
A partition plate for partitioning the inside of the housing into a heat exchange chamber and a machine room;
A heat exchanger and a blower provided in the heat exchange chamber;
A compressor provided in the machine room and piping connected to the compressor;
A carrying handle provided on each side surface of the housing, and
An outdoor unit of an air conditioner in which all of the handles are disposed at positions facing the heat exchanger.   The outdoor unit for an air conditioner according to claim 1, wherein at least one of the handles is made of a synthetic resin. A control unit for operation control provided in the housing;
A temperature sensor for detecting the outside air temperature connected to the control unit via a lead wire,
The heat exchanger has curved portions curved in an arc shape corresponding to the corners of the housing at both ends,
The outdoor unit of an air conditioner according to claim 1 or 2, wherein the temperature sensor is attached to a curved portion closer to the control unit in the heat exchanger than the two curved portions of the heat exchanger. . The temperature sensor is attached to the bending portion via a holder,
The outdoor unit for an air conditioner according to claim 3, wherein the holder is fixed to the curved portion in a state where the holder is not in contact with the casing.   The outdoor unit of an air conditioner according to claim 4, wherein the holder has a structure in which the temperature sensor can be attached to and detached from the holder in a state where the holder is fixed to the curved portion.

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