JP2011179769A - Outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water droplets including copper ions from coming into contact with a base made of dissimilar metal and constituting an outdoor unit bottom face. <P>SOLUTION: The metallic base 1 constituting the outdoor unit bottom face of an air conditioner is used as a base plate, and a compressor 2 and a heat exchanger 3 are mounted on the base 1. A refrigerant circuit is constituted by a copper pipe 4 interconnecting the compressor 2 and the heat exchanger 3 and valves 5. A fan 20 is arranged on the inner face side of the heat exchanger 3, and a machine chamber 9 where the compressor 2 and the copper pipe 4 are arranged and an air blower chamber 10 where the fan 20 and the heat exchanger 3 are arranged are partitioned by a separator 11. A resin dish-shaped drain receiver 13 is provided at least on the base 1 below the copper pipe 4 in the machine chamber 9. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit capable of preventing electrical corrosion of surrounding dissimilar metal materials due to water droplets containing copper ions.

  Conventionally, it is known that copper ions contained in water condensed on the copper pipe of the refrigerant pipe cause electrical corrosion of surrounding dissimilar metals (particularly, the base metal constituting the bottom of the outdoor unit) (for example, patents) Reference 1).

JP-A-6-300303 (FIG. 1)

  As described above, the conventional outdoor unit of the air conditioner has the moisture in the air condensed and dripped onto the copper pipe where the low-temperature refrigerant flows during operation, so the drain water containing copper ions and the bottom of the outdoor unit There was a possibility of causing electric corrosion between the metal base and the metal base.

  The technical problem of the present invention is to make it possible to prevent water droplets containing copper ions from coming into contact with a dissimilar metal base constituting the bottom surface of the outdoor unit.

  The outdoor unit of the air conditioner according to the present invention has the following configuration. That is, a metal base that constitutes the bottom surface of the outdoor unit of the air conditioner is used as a base plate, a compressor and a heat exchanger are mounted on the base, and a refrigerant circuit is configured by copper pipes and valves that connect these. An air conditioner outdoor unit in which a fan is arranged on the inner surface side of the heat exchanger, a machine room in which the compressor and the copper pipe are arranged, and a fan room in which the fan and the heat exchanger are arranged are separated by a separator. A resin dish-shaped drain receiver is provided on at least the base below the copper tube in the machine room.

  In the outdoor unit of the air conditioner of the present invention, since the resin-made dish-shaped drain receiver is provided on at least the metal base below the copper tube in the machine room, water droplets containing copper ions are removed from the resin dish. It can be received by the drain receiver, and water droplets containing copper ions can be prevented from coming into contact with the metal base. For this reason, it is possible to prevent electric corrosion from occurring between the drain water containing copper ions and the metal base constituting the bottom surface of the outdoor unit.

It is a perspective view which shows the structure of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention in the state which removed the outer shell. It is a perspective view which shows the relationship between the base in the machine room of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention, a compressor, and a plate-shaped drain receptacle. It is a perspective view which shows the state which removed the compressor and the separator from FIG. It is a disassembled perspective view which shows the relationship between the base of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention, and a dish-shaped drain receptacle. It is a perspective view which shows the porous foam material which is the principal part of the outdoor unit of the air conditioner which concerns on Embodiment 2 of this invention. It is a perspective view which shows the porous foaming material which has a water-tight film | membrane on the lower surface side which is the principal part of the outdoor unit of the air conditioner concerning Embodiment 3 of this invention. It is sectional drawing which shows the porous foaming material which has a water-tight film | membrane on the lower surface side which is the principal part of the outdoor unit of the air conditioner concerning Embodiment 3 of this invention. It is a perspective view which shows the relationship between the compressor which is the principal part of the outdoor unit of the air conditioner which concerns on Embodiment 4 of this invention, a copper pipe, and a cylindrical heat insulation cover.

Embodiment 1 FIG.
The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a perspective view showing a configuration of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention with a casing removed, and FIG. 2 shows a relationship among a base, a compressor, and a dish-shaped drain receiver in the machine room. FIG. 3 is a perspective view showing a state where the compressor and the separator are removed from FIG. 2, and FIG. 4 is an exploded perspective view showing the relationship between the base and the dish-shaped drain receiver.

  The outdoor unit of the air conditioner according to the present embodiment is a compressor on the base 1 with a metal base 1 constituting the bottom surface of the main body of the outdoor unit of the air conditioner as a base plate as shown in FIGS. 2 and the heat exchanger 3 are mounted, and a refrigerant circuit is configured by the copper pipe 4 and the valves 5 that connect them. A fan 20 is disposed on the inner surface side of the heat exchanger 3, that is, the front surface of the heat exchanger 3, and the machine room 9 in which the compressor 2 and the copper pipe 4 are disposed, the fan 20 and A blower chamber 10 in which the heat exchanger 3 is arranged is partitioned by a separator 11.

  The fan 20 includes a fan motor 7 and a propeller fan 8 supported by the motor support 6.

  An electrical component box 12 that houses electrical components such as a control board that controls the operation of the air conditioner is disposed above the separator 11.

  Also, a resin-made dish-shaped drain receiver 13 is detachable at least on the base 1 below the copper tube 4 in the machine room 9, that is, on the base 1 in the machine room 9 excluding the part where the compressor 2 is installed. Is provided.

  In addition, between the base 1 and the compressor 2, the coil spring 21 which is a vibration isolator is installed in three places.

  In the outdoor unit of the air conditioner of the present embodiment, the compressor 2 has a discharge pipe 14 that discharges high-temperature and high-pressure gas and a suction pipe 15 that sucks low-temperature and low-pressure gas as shown in FIG. The copper pipe 4 constituting the refrigerant circuit connected to the compressor 2 has a high or low temperature on the surface of the copper pipe depending on the temperature of the refrigerant flowing inside, so the copper pipe in the portion where the low-temperature refrigerant flows during operation 4, moisture in the air condenses and drops.

  Since this dripping water contains copper ions, electric corrosion occurs when it comes into contact with a dissimilar metal. However, as in this embodiment, a resin-made dish-shaped drain receiver 13 is provided below the copper tube 4. By providing this, it is possible to prevent water containing copper ions from falling directly on the metal base 1 and to prevent corrosion of the metal base 1 due to electric corrosion.

Embodiment 2. FIG.
FIG. 5 is a perspective view showing a porous foam material that is a main part of the outdoor unit of the air conditioner according to the second embodiment of the present invention, and the configuration of the other outdoor unit main body is the same as that of the first embodiment. Is the same as Therefore, the description will be made with reference to FIGS. 1 to 4 described above.

  The outdoor unit of the air conditioner of the present embodiment uses a porous foam material 16 instead of the resin-made dish-shaped drain receiver 13 in the first embodiment, and the porous foam material 16 is The machine room 9 is detachably provided at least on the base 1 below the copper tube 4, that is, on the base 1 in the machine room 9 except for the part where the compressor 2 is installed.

  In the outdoor unit of the air conditioner of the present embodiment, moisture in the air is condensed and dripped onto the copper pipe 4 where the low-temperature refrigerant flows during operation.

  Since this dripping water contains copper ions, electric corrosion occurs when it comes into contact with dissimilar metals, but a porous foam material 16 is provided below the copper tube 4 as in this embodiment. By absorbing and retaining the water dripped from the copper tube 4 into the porous foam material 16, it is possible to prevent water containing copper ions from falling directly on the metal base 1, and to be electrically corroded. Corrosion of the metal base 1 due to can be prevented in advance.

  Since the amount of drain water is not large, the retained water can be dried by natural evaporation and continuously retained even when the operation is repeated.

Embodiment 3 FIG.
6 is a perspective view showing a porous foam material having a water-tight film on the lower surface side, which is a main part of the outdoor unit of the air conditioner according to Embodiment 3 of the present invention, and FIG. 7 shows a water-tight film on the lower surface side. It is sectional drawing of the porous foam material which has, and the structure of the other outdoor unit main-body part is the same as that of the above-mentioned Embodiment 1. FIG. Therefore, in this description as well, the above-described FIGS. 1 to 4 are referred to.

  The outdoor unit of the air conditioner of the present embodiment has a porous foam material 16 having a watertight film 17 on the lower surface side instead of the resin-made dish-shaped drain receiver 13 in the first embodiment. The porous foam material 16 having a watertight film 17 on the lower surface side is used, and the compressor 2 is installed on the base 1 at least below the copper tube 4 in the machine room 9, that is, on the base 1 in the machine room 9. It is provided so as to be detachable at a portion other than the portion that is made.

  In the outdoor unit of the air conditioner of the present embodiment, moisture in the air is condensed and dripped onto the copper pipe 4 where the low-temperature refrigerant flows during operation.

  Since this dripping water contains copper ions, electric corrosion occurs when it comes into contact with dissimilar metals. However, as in this embodiment, a water-tight film is formed below the copper tube 4 and on the lower surface side. The metal base 1 is provided by providing a porous foam material 16 having a watertightness 17 and absorbing and retaining water dripped from the copper tube 4 into the porous foam material 16 having a watertight film 17 on the lower surface side. It is possible to prevent water containing copper ions from falling directly on the metal base, and to prevent corrosion of the metal base 1 due to electric corrosion.

  Although the amount of drain water is not large, the drain is concentrated at the position of the copper pipe 4 to be dripped, so that there is a possibility that water partially reaches the lower surface of the foam material and contacts the base 1. However, by providing the water-tight film 17 on the lower surface side as in the present embodiment, the drain can be absorbed and retained by the entire surrounding foam material without leaking downward.

Embodiment 4 FIG.
FIG. 8 is a perspective view showing the relationship among the compressor, the copper pipe, and the cylindrical heat insulating cover, which are the main parts of the outdoor unit of the air conditioner according to Embodiment 4 of the present invention. It is the same as that of the form 1. Therefore, in this description, reference is made to FIG. 1 described above.

  The outdoor unit of the air conditioner according to the present embodiment has a cylindrical flexibility in the copper pipe 4 that is connected to the compressor 2 and constitutes a refrigerant circuit, where the low-temperature refrigerant flows during operation. A heat insulating cover 18 is provided, and the other configuration is the same as that of the first embodiment.

  In the outdoor unit of the air conditioner of the present embodiment, the surface of the copper pipe 4 that becomes low temperature during operation and dew condensation is covered with a cylindrical flexible heat insulating cover 18 so as to insulate it. This prevents water containing copper ions from falling on the metal base 1. For this reason, corrosion of the metal base 1 due to electric corrosion can be prevented.

  1 base, 2 compressor, 3 heat exchanger, 4 copper pipe, 5 valves, 6 motor support, 7 fan motor, 8 propeller fan, 9 machine room, 10 blower room, 11 separator, 12 electrical box, 13 dishes Drain receiver, 14 discharge pipe, 15 suction pipe, 16 porous foam, 17 watertight membrane, 18 tubular flexible heat insulating cover (heat insulating cover), 20 fan, 21 coil spring.

Claims (4)

With a metal base that constitutes the bottom of the outdoor unit of the air conditioner as a base plate, a compressor and a heat exchanger are mounted on the base, and a refrigerant circuit is configured by copper pipes and valves that connect them. An air conditioner in which a fan is disposed on the inner surface side of the heat exchanger, and a machine room in which the compressor and the copper pipe are disposed and a blower room in which the fan and the heat exchanger are disposed are separated by a separator. Outdoor unit,
An outdoor unit of an air conditioner, wherein a resin-made dish drain receiver is provided on at least the base below the copper pipe in the machine room. With a metal base that constitutes the bottom of the outdoor unit of the air conditioner as a base plate, a compressor and a heat exchanger are mounted on the base, and a refrigerant circuit is configured by copper pipes and valves that connect them. An air conditioner in which a fan is disposed on the inner surface side of the heat exchanger, and a machine room in which the compressor and the copper pipe are disposed and a blower room in which the fan and the heat exchanger are disposed are separated by a separator. Outdoor unit,
An outdoor unit of an air conditioner, wherein a porous foam material is provided on at least the base below the copper pipe in the machine room.   The outdoor unit for an air conditioner according to claim 2, wherein a water-tight film is provided on the lower surface side of the porous foam material. With a metal base that constitutes the bottom of the outdoor unit of the air conditioner as a base plate, a compressor and a heat exchanger are mounted on the base, and a refrigerant circuit is configured by copper pipes and valves that connect them. An air conditioner in which a fan is disposed on the inner surface side of the heat exchanger, and a machine room in which the compressor and the copper pipe are disposed and a blower room in which the fan and the heat exchanger are disposed are separated by a separator. Outdoor unit,
An outdoor unit of an air conditioner characterized in that a cylindrical heat insulating cover is provided on a copper pipe in a portion where a low-temperature refrigerant flows during operation among the copper pipes connected to the compressor and constituting a refrigerant circuit. .

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