JP2005055024A - Outdoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure a storage place of a receiver which is forced to be enlarged and expanded in accompany with the increase of the amount of refrigerant as an outdoor unit of a multiple air conditioner. <P>SOLUTION: In this outdoor unit of the air conditioner provided with the receiver, a heat exchanger, a fan and a wind circuit by the fan, inside thereof, a copper pipe in the heat exchanger is partially extended to the outside of the heat exchanger from the way of the heat exchanger, the receiver is connected on the way of the copper pipe, and further the receiver is mounted in the wind circuit of the outdoor unit of the air conditioner. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to the structure of a refrigeration cycle of an outdoor unit of an air conditioner.

As shown in FIGS. 6 and 7, a conventional outdoor unit of an air conditioner includes a compressor 5, an accumulator 6, a four-way valve 7, internal / external connection valves 9 a, 9 b, and the like. It is divided into a machine room 11 for storing connecting pipes (not shown) to be connected and the like, and a blower circuit 13 including a heat exchanger 3, a fan 14, a fan motor support 16 and the like. When it cannot be stored in the machine room 11, it is connected to the blower passage 13 through a through hole 23 provided in the partition plate 4 through a receiver connection pipe 19, and a space between the through hole 23 is inserted in a space. S24 was arranged (for example, refer to patent documents 1).
JP 2001-173998 A

  However, in the conventional configuration described above, in the outdoor unit for multi-air conditioner, measures were taken to place the receiver in the wind circuit in response to the increase in size and expansion of the receiver accompanying the increase in the amount of refrigerant. The piping is configured to penetrate the partition plate, which not only complicates the configuration of the partition plate, but also requires the addition of a sealing material for air and water leakage.

  Moreover, the ventilation performance was lowered by the routing of the connecting pipe.

  Furthermore, during heating operation, the frost adhering to the heat exchanger of the outdoor unit is de-ice, that is, the refrigeration cycle is reversed (cooling cycle), hot gas is introduced into the outdoor heat exchanger, and the heat is melted. However, when the receiver and the heat exchanger are located apart as described above, the ice that has been dripped and frozen on the receiver surface or below the receiver could not be melted with deice, and the substrate was frozen. .

  SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and secures a storage space for a receiver that is forced to be enlarged or expanded, and a pipe connected to the receiver via a heat exchanger internal pipe. An object of the present invention is to provide an outdoor unit of an air conditioner that does not require an extra through hole in the partition plate and further prevents the substrate from freezing during heating operation.

  In order to solve the above problems, the present invention relates to an outdoor unit of an air conditioner in which a receiver, a heat exchanger, a fan, and an air circuit including the fan are provided, and the refrigerant passes through the heat exchanger. A part of the copper pipe to be circulated is extended from the heat exchanger and connected to the receiver.

  The space in the outdoor unit is divided into two spaces by a partition plate, a wind circuit is provided in one of the spaces, and a receiver is provided in the wind circuit.

  Furthermore, a space is provided in the vicinity of the end in the longitudinal direction of the heat exchanger in the outdoor unit, and a receiver is accommodated in the space.

  With this configuration, it is possible to secure a storage space for receivers that are forced to increase in size and size, and do not require extra through holes in the partition plate, and air that can prevent the substrate from freezing during heating operation. The outdoor unit of the harmony machine is obtained.

  Further, by holding the receiver in an extra space formed by a front plate having a heat exchanger, a fan, a fan motor support base and a blower outlet in the blower circuit, the size and size of the receiver can be increased. The required storage space for the receiver can be secured without blowing resistance, and the connecting pipe to the receiver is routed through the heat exchanger's internal pipe, eliminating the need for extra through holes in the partition plate, and further heating operation An outdoor unit of an air conditioner that can prevent freezing of the substrate at the time can be obtained.

The present invention relates to an outdoor unit of an air conditioner in which a receiver, a heat exchanger, a fan, and a wind circuit by the fan are provided, and the space in the outdoor unit is divided into two spaces by a partition plate. A wind circuit is provided in the space, a part of a copper pipe that passes through the heat exchanger and circulates the refrigerant is extended from the heat exchanger, connected to the receiver, and the receiver is provided in the wind circuit. An outdoor unit of an air conditioner that can secure a storage space for a receiver that has to be increased in size, and that does not require an extra through hole in the partition plate, and that can prevent freezing of the substrate during heating operation. can get.
In addition, a space is provided in the vicinity of the longitudinal end of the heat exchanger in the outdoor unit, and a receiver is stored in the space, ensuring a storage space for the receiver that has to be enlarged or expanded. An outdoor unit of an air conditioner that can be realized without blowing resistance, does not require an extra through hole in the partition plate, and can prevent freezing of the substrate during heating operation is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In FIG. 1 or FIG. 2, the heat exchanger 3 formed in an L shape on the substrate 2 of the outdoor unit 1 of the air conditioner facing the one side surface a and the back surface b of the outdoor unit 1, and the other Refrigeration cycle components such as a compressor 5, an accumulator 6, a four-way valve 7, an expansion valve 8, a gas side connection valve 9 a, a liquid side connection valve 9 b, and a refrigerant pipe 10 are accommodated on the side surface c by the partition plate 4. A fan motor support base 16 for holding a fan 14 and a fan motor 15 is provided in the machine room 11 and an electric box 12 above the machine room 11, and a fan circuit 13 formed by the heat exchanger 3 and the partition plate 4. Arranged in a space d formed by the heat exchanger 3, fan 14 and fan motor support base 15 in the blower circuit 13, from the internal pipes 18a and 18b of the heat exchanger 3 to the receiver connection pipe 19a, Surplus refrigerant storage connected at 19b A storage receiver 20 is fixed to the substrate 2 with a receiver support plate 21, and receiver connection pipes 19 a and 19 b connected to the receiver 20 are arranged near the substrate 2 of the heat exchanger 3. ing.

  FIG. 3 is a diagram showing the refrigeration cycle of the present embodiment. 3 is a heat exchanger, 5 is a compressor, 6 is an accumulator, 7 is a four-way valve, 8 is an expansion valve, and 9a is a gas side connection. Valves 9b are liquid side connection valves, 18a and 18b are internal pipes (of the heat exchanger 3), 19a and 19b are receiver connection pipes, and 20 is a receiver.

  According to the above embodiment, the space d formed by the heat exchanger 3, the fan 14, and the fan motor support base 15 in the blower circuit 13 is connected to the refrigerant pipe 19 a, from the internal pipes 18 a and 18 b of the heat exchanger 3. The receiver 20 for storing excess refrigerant connected at 19b is fixed to the substrate 2 by the receiver support plate 21, and the receiver connection pipes 19a and 19b connected to the receiver 20 are connected to the heat exchanger 3. The receiver 20 is disposed in the vicinity of the substrate 2 and a pair of heat exchanger internal pipes 18a and 18b and the receiver 20 and the receiver 20 are disposed between the gas side connection valve 9a and the expansion valve 8. By providing the connection pipes 19a and 19b, the drain water generated from the heat exchanger 3 and accumulated on the substrate 2 during the heating operation is replaced with the refrigerant that has left the residual heat returned from the indoor unit (not shown). Heat exchange via gas side connection valve 9a Vessel 3 of the piping 18a, 18b and Residencial - bar connecting pipe 19a, warmed in the process of flowing through 19b, can be prevented freezing.

(Embodiment 2)
4 or 5, the heat exchanger 3 is formed in an L shape on the substrate 2 of the outdoor unit 1 of the air conditioner so as to face one side surface a and the back surface b of the outdoor unit 1, and the other side. Refrigeration cycle components such as a compressor 5, an accumulator 6, a four-way valve 7, an expansion valve 8, a gas side connection valve 9 a, a liquid side connection valve 9 b, and a refrigerant pipe 10 are accommodated on the side surface c by the partition plate 4. A fan motor support base 16 for holding a fan 14 and a fan motor 15 is provided in the machine room 11 and an electric box 12 above the machine room 11, and a fan circuit 13 formed by the heat exchanger 3 and the partition plate 4. Arranged and in the vicinity of the substrate 2 of the heat exchanger 3 in a space e formed by the front plate 17 having the heat exchanger 3, fan 14, fan motor support base 15 and blower outlet 17a in the blower circuit 13 From a pair of internal pipes 18a and 18b The excess refrigerant storage receiver 20 connected by the receiver connection pipes 19a and 19b is directly fixed.

  According to the said embodiment, in the space e formed with the heat exchanger 3 in the ventilation circuit 13, the fan 14, the fan motor support stand 15, and the front board 17 which has the ventilation blower outlet 17a, the said heat exchanger 3 is carried out. Since the receiver 20 for storing excess refrigerant is directly fixed from the pair of internal pipes 18a and 18b in the vicinity of the substrate 2 by the receiver connection pipes 18a and 18b, a new receiver fixing bracket is not required. In addition to being able to be arranged without resistance in the blower circuit, the drain water generated from the heat exchanger 3 and accumulated on the substrate 2 during the heating operation is a refrigerant that leaves the residual heat returned from the indoor unit (not shown). It can be warmed in the process of flowing through the substrate proximity internal pipes 18a and 18b of the heat exchanger 3 via the 11 gas side connection valves 9a, and freezing can be prevented.

The cross-sectional view of the outdoor unit of the air conditioner showing the first embodiment of the present invention The longitudinal cross-sectional view of the outdoor unit of the air conditioner of the 1st Embodiment of this invention Refrigeration cycle diagram of the air conditioner of the first embodiment of the present invention Cross-sectional view showing a second embodiment of the present invention A longitudinal sectional view showing a second embodiment of the present invention Cross-sectional view of an outdoor unit of a conventional air conditioner Detailed view of the main part of an outdoor unit of a conventional air conditioner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outdoor unit of air conditioner 3 Heat exchanger 4 Partition plate 10 Refrigerant piping 13 Blower circuit 14 Fan 20 Receiver

Claims (3)

In an outdoor unit of an air conditioner provided with a receiver, a heat exchanger, a fan, and a wind circuit by the fan, a part of a copper pipe that passes through the heat exchanger and circulates the refrigerant is used for the heat exchange. An outdoor unit of an air conditioner, characterized in that it is extended from a vessel and connected to the receiver. The air conditioner according to claim 1, wherein the space in the outdoor unit is divided into two spaces by a partition plate, a wind circuit is provided in one of the spaces, and a receiver is provided in the wind circuit. Outdoor unit. The outdoor unit of the air conditioner according to claim 1, wherein the outdoor unit is an air conditioner.

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