WO2022003869A1

WO2022003869A1 - Outdoor unit and air conditioning device using same

Info

Publication number: WO2022003869A1
Application number: PCT/JP2020/025861
Authority: WO
Inventors: 和也岡田
Original assignee: 三菱電機株式会社
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2022-01-06
Also published as: JPWO2022003869A1

Abstract

An outdoor unit according to the present invention comprises a casing that constitutes an outer shell, and a compressor that is disposed within the casing and compresses refrigerant supplied via piping of a refrigerant circuit; and is provided with an antivibration device that is disposed midway along the piping and reduces vibration transmitted from the compressor via the piping. The antivibration device comprises: connection piping for connecting to the piping; a fitting part that is fitted to the casing; and a main body part where the connection piping and fitting part are disposed. The connection piping is disposed so as to pass through the main body part. A fitting hole is formed such that a fixing tool for performing fixing to the casing passes therethrough, in the fitting part in the direction intersecting the arrangement direction of the connection piping with respect to the main body part. An elastic member is interposed between the fitting part and the casing. Through the above, the generation of vibration sound is suppressed as a result of the antivibration device reducing the vibration of the piping in the refrigerant circuit.

Description

Outdoor unit and air conditioner using it

This disclosure relates to an outdoor unit and an air conditioner using the outdoor unit.

As an outdoor unit conventionally used in an air conditioner, for example, the outdoor unit described in Patent Document 1 is known. The outdoor unit has parts such as a compressor, a heat exchanger, a four-way valve, and an expansion valve, and a container such as an accumulator and a receiver, and the parts and the container are connected by piping, respectively. Further, the outdoor unit is provided with a housing in which the outer shell is composed of a panel covering the front surface, both left and right side surfaces, and the top surface, a bottom plate, and the like. Further, the housing is provided with sheet metal parts such as side plates for partitioning the inside. Then, in the outdoor unit, the above-mentioned piping is fixed to the sheet metal parts of the housing.

For example, in a conventional outdoor unit, a compressor, a heat exchanger, and a side plate are installed on the bottom plate. A discharge pipe and a suction pipe are connected to the compressor, the discharge pipe is connected to a heat exchanger, the suction pipe is fixed to the side plate, and the front panel and the side panel are installed on the bottom plate and the side plate.

Here, in the outdoor unit, there is also a configuration in which the above-mentioned container is not required or a model dedicated to cooling does not require a four-way valve. In particular, in an outdoor unit having such a configuration, the piping on the suction side of the compressor does not pass through a component for fixing between the compressor and the side plate, so that the vibration of the compressor is directly transmitted to the side plate. It has become. Therefore, since the vibration of the compressor is propagated to the side panel fixed to the side plate, there is a problem that the side panel and each panel arranged connected to the side panel become a speaker and the vibration sound is amplified. .. Therefore, in the conventional outdoor unit, the vibration of the pipe is suppressed by fixing the suction pipe of the compressor to the bottom plate of the housing via a fixing member made of an elastic body such as synthetic rubber.

Japanese Unexamined Patent Publication No. 11-325515

However, in this case, a part of the suction pipe is inserted into the accommodating portion of the fixing member from the insertion port made of a slit, and the fixing member is fixed to the bottom plate. Therefore, the suction pipe is held only by the elastic force of the accommodating portion, and the fixing member cannot sufficiently absorb the vibration of the suction pipe, and there is a problem that the vibration isolation performance is insufficient.

The present disclosure is to solve the above-mentioned problems, and an object of the present invention is to provide an outdoor unit capable of reducing vibration of pipes in a refrigerant circuit and suppressing generation of vibration noise, and an air conditioner using the same. ..

The outdoor unit according to the present disclosure is an outdoor unit having a housing constituting an outer shell, a pipe of a refrigerant circuit arranged in the housing, and a compressor for compressing a compressor supplied through the pipe. The vibration isolator is provided in the middle of the pipe and is provided with a vibration isolator that reduces vibration transmitted from the compressor via the pipe. The vibration isolator includes a connection pipe connected to the pipe and a casing. It has a mounting portion to be attached to the body, a connecting pipe and a main body portion in which the mounting portion is arranged, and the connecting pipe is arranged so as to penetrate the main body portion. A mounting hole for passing a fixture for fixing to the housing is formed in a direction intersecting the arrangement direction of the connection pipe, and an elastic member is interposed between the mounting portion and the housing. It is a thing.

Further, the air conditioner according to the present disclosure is provided with the above-mentioned outdoor unit.

According to the present disclosure, a vibration isolator that reduces vibration transmitted from a compressor via a pipe is arranged in the middle of the pipe of the refrigerant circuit in the outdoor unit with an elastic member interposed therebetween. Therefore, the vibration isolator can reduce the vibration of the piping in the refrigerant circuit, thereby suppressing the generation of vibration noise.

It is a schematic diagram which shows the refrigerant circuit of the air conditioner which concerns on Embodiment 1. FIG. It is a perspective view which shows the structure of the outdoor unit which concerns on Embodiment 1. FIG. It is a perspective view which shows the internal structure in the outdoor unit of FIG. It is a front view which shows the internal structure in the outdoor unit of FIG. It is a schematic diagram which shows the installation example of the anti-vibration device in the outdoor unit of FIG. It is a front view which shows the vibration isolation device of FIG. It is a top view which shows the vibration isolation device of FIG. It is a schematic diagram which shows the installation example of the anti-vibration device in the outdoor unit which concerns on Embodiment 2. FIG. It is a schematic diagram which shows the installation example of the anti-vibration device in the outdoor unit which concerns on Embodiment 3. FIG.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be noted that the forms of the components shown in the entire specification are merely examples and are not limited to these descriptions. That is, the present disclosure may be appropriately modified to the extent that it does not contradict the gist or idea that can be read from the claims and the entire specification. Further, an outdoor unit accompanied by such a change and an air conditioner using the same are also included in the technical idea of the present disclosure. Further, in each figure, those having the same reference numerals are the same or equivalent thereof, which are common to the whole text of the specification.

Embodiment 1.
<Structure of air conditioner 1>
The air conditioner 1 according to the first embodiment will be described with reference to FIG. FIG. 1 is a schematic diagram showing a refrigerant circuit 5 of the air conditioner 1 according to the first embodiment.

As shown in FIG. 1, the air conditioning device 1 according to the first embodiment cools or heats the air in the room by transferring heat between the outside air and the air in the room via a refrigerant. It has an indoor unit 2 and an outdoor unit 3.

In the air conditioner 1, the indoor unit 2 and the outdoor unit 3 are connected via a refrigerant pipe 4 arranged inside them and a refrigerant pipe 4a and a refrigerant pipe 4b arranged outside them to supply a refrigerant. A circulating refrigerant circuit 5 is configured. The refrigerant circuit 5 is provided with a compressor 10, a flow path switching device 11, an outdoor heat exchanger 12, an expansion valve 13, and an indoor heat exchanger 14, and these are connected via the

refrigerant pipes

4, 4a and 4b. There is.

The outdoor unit 3 has a compressor 10, a flow path switching device 11, an outdoor heat exchanger 12, an expansion valve 13, and an outdoor blower 15. The compressor 10 compresses and discharges the sucked refrigerant. Here, the compressor 10 may be driven and controlled by an inverter. In this case, the capacity of the compressor 10 can be changed by changing the operating frequency by the control unit 6. The capacity of the compressor 10 is the amount of the refrigerant delivered per unit time. The flow path switching device 11 is, for example, a four-way valve, and is a device for switching the direction of the refrigerant flow path.

The air conditioner 1 can realize a heating operation or a cooling operation by switching the flow of the refrigerant by using the flow path switching device 11 based on the instruction from the control unit 6. The outdoor heat exchanger 12 exchanges heat between the refrigerant and the outdoor air. Further, the outdoor heat exchanger 12 is provided with an outdoor blower 15 for increasing the efficiency of heat exchange between the refrigerant and the outdoor air, facing the outdoor heat exchanger 12. The outdoor blower 15 has a plurality of blades (not shown) and is rotationally driven by a fan motor 16 which is a drive source. Here, the outdoor blower 15 may be driven and controlled by an inverter. In this case, the outdoor blower 15 changes the operating frequency of the fan motor 16 by the control unit 6 to change the rotation speed of the fan. The outdoor blower 15 may be, for example, a sirocco fan or a plug fan as long as the same effect can be obtained. Further, the outdoor blower 15 may be a pushing method or a pulling method.

Here, the outdoor heat exchanger 12 functions as an evaporator during the heating operation, and exchanges heat between the low-pressure refrigerant flowing in from the refrigerant pipe 4b side and the outdoor air to evaporate the refrigerant and vaporize it. And let it flow out to the refrigerant pipe 4a side. Further, the outdoor heat exchanger 12 functions as a condenser during the cooling operation, and is between the refrigerant compressed by the compressor 10 flowing from the refrigerant pipe 4a side via the flow path switching device 11 and the outdoor air. The heat is exchanged at the above, and the refrigerant is condensed and liquefied, and then discharged to the refrigerant pipe 4b side. Although the case where the outdoor air is used as the external fluid has been described here as an example, the external fluid is not limited to the gas containing the outdoor air and may be a liquid containing water.

The expansion valve 13 is a throttle device that controls the flow rate of the refrigerant, and adjusts the pressure of the refrigerant by adjusting the flow rate of the refrigerant flowing through the refrigerant pipe 4 by changing the opening degree of the expansion valve 13. During the cooling operation, the expansion valve 13 expands the high-pressure liquid-state refrigerant into the low-pressure gas-liquid two-phase state refrigerant to reduce the pressure. The expansion valve 13 may be an electronic expansion valve, a capillary tube, or the like as long as the same effect can be obtained. For example, when the expansion valve 13 is composed of an electronic expansion valve, the opening degree is adjusted based on the instruction of the control unit 6.

The indoor unit 2 includes an indoor heat exchanger 14 that exchanges heat between the refrigerant and the indoor air, and an indoor blower 17 that adjusts the flow of air that the indoor heat exchanger 14 exchanges heat with.

The indoor heat exchanger 14 functions as a condenser during the heating operation, exchanges heat between the refrigerant flowing in from the refrigerant pipe 4a side and the indoor air, condenses the refrigerant and liquefies it, and causes the refrigerant pipe 4b side. Leak to. Further, the indoor heat exchanger 14 functions as an evaporator during the cooling operation, and exchanges heat between the refrigerant brought into a low pressure state by the expansion valve 13 flowing from the refrigerant pipe 4b side and the indoor air to exchange heat with the refrigerant. Takes heat from the air, evaporates it, vaporizes it, and causes it to flow out to the refrigerant pipe 4a side.

The operating speed of the indoor blower 17 is determined by the user's setting. Here, it is preferable that the indoor blower 17 is driven and controlled by an inverter. In this case, the indoor blower 17 changes the operating frequency of the fan motor 18 by the inverter to change the rotation speed of the fan. The indoor blower 17 may be, for example, a sirocco fan or a plug fan as long as the same effect can be obtained. Further, the indoor blower 17 may be a pushing type or a pulling type.

<Operation example of cooling and heating operation of air conditioner 1>
Next, the operation of the cooling operation will be described as an operation example of the air conditioner 1. The high-temperature and high-pressure gas refrigerant compressed and discharged by the compressor 10 flows into the outdoor heat exchanger 12 via the flow path switching device 11. The gas refrigerant flowing into the outdoor heat exchanger 12 is condensed by heat exchange with the outside air blown by the outdoor blower 15, becomes a low-temperature refrigerant, and flows out from the outdoor heat exchanger 12. The refrigerant flowing out of the outdoor heat exchanger 12 is expanded and depressurized by the expansion valve 13 to become a low-temperature low-pressure gas-liquid two-phase refrigerant. This gas-liquid two-phase refrigerant flows into the indoor heat exchanger 14 of the indoor unit 2, evaporates by heat exchange with the indoor air blown by the indoor blower 17, and becomes a low-temperature low-pressure gas refrigerant in the indoor heat exchanger. Outflow from 14. At this time, the indoor air that has been endothermic and cooled by the refrigerant becomes air-conditioned air (blow-out air) and is blown out from the indoor unit 2 into the room that is the air-conditioned space. The gas refrigerant flowing out of the indoor heat exchanger 14 is sucked into the compressor 10 via the flow path switching device 11 and is compressed again. In the cooling operation of the air conditioner 1, the operation beyond that indicated by the solid arrow in FIG. 1 is repeated.

Next, the operation of the heating operation will be described as an operation example of the air conditioner 1. The high-temperature and high-pressure gas refrigerant compressed and discharged by the compressor 10 flows into the indoor heat exchanger 14 of the indoor unit 2 via the flow path switching device 11. The gas refrigerant flowing into the indoor heat exchanger 14 is condensed by heat exchange with the indoor air blown by the indoor blower 17, becomes a low-temperature refrigerant, and flows out from the indoor heat exchanger 14. At this time, the indoor air that has been warmed by receiving heat from the gas refrigerant becomes conditioned air (blow-out air) and is blown out from the indoor unit 2 into the room. The refrigerant flowing out of the indoor heat exchanger 14 is expanded and depressurized by the expansion valve 13 to become a low-temperature low-pressure gas-liquid two-phase refrigerant. This gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 12 of the outdoor unit 3, evaporates by heat exchange with the outside air blown by the outdoor blower 15, becomes a low-temperature low-pressure gas refrigerant, and becomes the outdoor heat exchanger 12. Outflow from. The gas refrigerant flowing out of the outdoor heat exchanger 12 is sucked into the compressor 10 via the flow path switching device 11 and is compressed again. In the heating operation of the air conditioner 1, the operation described by the broken line arrow in FIG. 1 is repeated.
<Outdoor unit 3>
The outdoor unit 3 according to the first embodiment will be described with reference to FIGS. 2 to 4. FIG. 2 is a perspective view showing the configuration of the outdoor unit 3 according to the first embodiment. FIG. 3 is a perspective view showing the internal structure of the outdoor unit 3 of FIG. FIG. 4 is a front view showing the internal structure of the outdoor unit 3 of FIG. In FIGS. 3 and 4 showing the internal structure of the outdoor unit 3, parts such as the flow path switching device 11, the expansion valve 13, the outdoor blower 15, and the fan motor 16 are omitted for convenience.

As shown in FIG. 2, the outdoor unit 3 according to the first embodiment includes a housing 30 that constitutes an outer shell. The housing 30 includes a front panel 30a that covers the front surface, a side panel 30ba that covers one side surface, a side panel 30bb that covers the other side surface opposite to one side surface, a top panel 30c that covers the top surface, and a bottom plate that covers the bottom surface. It is equipped with a panel member such as 31 and the like. The housing 30 is formed in a rectangular parallelepiped shape as a whole. Further, the front panel 30a located on the front side of the outdoor blower 15 in the housing 30 of the outdoor unit 3 has a slit-shaped outlet 30ab for discharging the air inside the housing to the outside of the housing. It is provided. The housing of the outdoor unit 3 may be arranged on the back side of the housing and may include a back panel (not shown) that covers the outdoor heat exchanger 12.

As shown in FIGS. 3 and 4, the inside of the housing 30 in the outdoor unit 3 is divided into an air passage chamber 33 and a machine room 34 by a partition plate 32. An outdoor blower 15 (see FIG. 2) is installed on the front side of the housing 30 in the air passage chamber 33. Further, an outdoor heat exchanger 12 is installed on the back side of the outdoor blower 15 in the air passage chamber 33. Although detailed illustration is omitted here, the outdoor heat exchanger 12 includes a heat transfer tube through which the refrigerant flows, and fins for increasing the heat transfer area between the refrigerant flowing through the heat transfer tube and the outside air. It may have a structure.

In the machine room 34, a compressor 10 is installed which is connected to the outdoor heat exchanger 12 via the suction pipe 41 and the discharge pipe 42 in the refrigerant pipe 4 and supplies the refrigerant to the outdoor heat exchanger 12. Further, in the machine room 34, an electric component 35 such as a power module and an inverter board is installed, including a current sensor for detecting whether or not the outdoor unit 3 is in operation. Further, in the machine room 34, a side plate 36 as a sheet metal component for partitioning the compressor 10 and the electric component 35 is installed. The side plate 36 constitutes a part of the structure of the housing 30. One end of the suction pipe 41 is connected to the compressor 10 and is fixed to the side plate 36 in the middle of the route (see FIG. 5).

(Vibration isolation device 7)
Next, the vibration isolator 7 installed in the outdoor unit 3 of the first embodiment will be described with reference to FIGS. 5 to 7. FIG. 5 is a schematic diagram showing an installation example of the vibration isolator 7 in the outdoor unit 3 of FIG. FIG. 6 is a front view showing the vibration isolator 7 of FIG. FIG. 7 is a plan view showing the vibration isolator 7 of FIG.

In the case of the first embodiment, as shown in FIG. 5, the suction pipe 41 connected to the compressor 10 is compressed between the compressor 10 and the side plate 36 to which the suction pipe 41 is fixed. A vibration isolator 7 is provided to reduce the vibration transmitted from the machine 10 to the suction pipe 41.

As shown in FIGS. 6 and 7, the vibration isolator 7 is connected to the suction pipe 41 and forms a part of the suction pipe 41, and the bottom plate 31 (see FIG. 2) of the housing 30 (see FIG. 2). It has a mounting portion 72 to be attached to (see 5) or the like, and a main body portion 70 in which the connecting pipe 71 and the mounting portion 72 are arranged. That is, the vibration isolator 7 is a two-way valve whose connection with the suction pipe 41 is fixed in an open state. Therefore, even if the vibration isolator 7 is arranged in the middle of the suction pipe 41, the flow of the refrigerant itself is not changed. Further, in the case of the first embodiment, the vibration isolator 7 has a rectangular shape in a plane, and the main body 70 protrudes upward when viewed from the front, but the shape is not limited to this.

The connection pipe 71 is arranged so as to penetrate the main body 70, and is connected to the suction pipe 41 by brazing or the like via a connection portion 73 such as a flange. The mounting portion 72 is formed in a direction intersecting the arrangement direction of the connecting pipe 71 with respect to the main body portion 70, more preferably in a direction orthogonal to the main body portion 70. Further, in the mounting portion 72, a mounting hole 74 through which a bolt 8 (see FIG. 5), which is one of the fixing tools for fixing to the housing 30, intersects with the arranging direction of the connecting pipe 71, more preferably. Are formed in orthogonal directions. Further, there is an elastic member between the mounting portion 72 and the housing 30, and between the nut 9 (see FIG. 5), which is one of the fixtures mounted on the bolt 8, and the mounting portion 72, which is an elastic member. Rubber 75 is interposed. Similar to the mounting portion 72, the anti-vibration rubber 75 is also formed with a hole 75a through which the bolt 8 is passed.

As shown in FIG. 5, one end of the bolt 8 is attached to the bottom plate 31 by welding or the like. The other end side of the bolt 8 fixed to the bottom plate 31 is the hole 75a of the anti-vibration rubber 75 arranged on the bottom plate 31 side of the mounting portion 72, the mounting hole 74 of the mounting portion 72, and the bottom plate 31 side of the mounting portion 72. It is joined to the nut 9 through the hole 75a of the anti-vibration rubber 75 arranged on the opposite side to the above. As a result, the vibration isolator 7 is fixed to the bottom plate 31 of the housing 30. That is, the anti-vibration device 7 is connected to the bottom plate 31 with the anti-vibration rubber 75 interposed between the mounting portion 72 and the bottom plate 31 and between the mounting portion 72 and the nut 9. It is fixed in the direction orthogonal to the placement direction of.

In the outdoor unit 3 configured in this way, the vibration of the compressor 10 is transmitted to the suction pipe 41, and the vibration is transmitted to the vibration isolator 7 via the suction pipe 41. Since the vibration isolator 7 is fixed to the bottom plate 31 in the direction orthogonal to the arrangement direction of the connection pipe 71 by the bolt 8 and the nut 9 via the vibration isolator 75, the suction pipe 41 It is possible to absorb the vibration transmitted from the bottom plate 31 in the direction of the bottom plate 31. At this time, the anti-vibration rubber 75 is arranged at both ends of the bottom plate 31 side and the nut 9 side of the mounting hole 74 in the mounting portion 72, so that the anti-vibration rubber 75 is provided only on one side of the mounting hole 74 in the mounting portion 72. The vibration suppression effect can be further enhanced as compared with the case where it is arranged. Therefore, in the outdoor unit 3 of the first embodiment, the vibration directly transmitted from the compressor 10 to the side plate 36 to which the suction pipe 41 is fixed via the suction pipe 41 is transmitted in the middle of the suction pipe 41. It can be reduced by the vibration isolator 7 installed in.

<Effect in Embodiment 1>
As described above, in the outdoor unit 3 of the first embodiment, the vibration isolator 7 is installed in the middle of the refrigerant pipe 4 (suction pipe 41) of the refrigerant circuit 5 in the outdoor unit 3. Since the vibration isolator 7 is fixed to the bottom plate 31 by the bolt 8 and the nut 9 via the vibration isolator 75, it absorbs the vibration transmitted from the compressor 10 via the suction pipe 41. , The vibration directly transmitted to the side plate 36 to which the suction pipe 41 is fixed can be reduced. Therefore, in the outdoor unit 3, the vibration isolator 7 transmits the vibration transmitted through the side plate 36 to the front panel 30a, the side panel 30ba, the side panel 30bb, the top panel 30c, etc. constituting the housing 30. Since it can be reduced, the generation of vibration noise can be suppressed. Further, since the anti-vibration device 7 is fixed to the bottom plate 31 of the housing 30 by using the bolt 8 and the nut 9 via the anti-vibration rubber 75, the anti-vibration performance can be improved regardless of the direction in which the vibration is transmitted. Obtainable.

Embodiment 2.
Next, the outdoor unit 3 according to the second embodiment will be described with reference to FIG. FIG. 8 is a schematic diagram showing an installation example of the vibration isolator 7 in the outdoor unit 3 according to the second embodiment. Since FIG. 8 shows a portion corresponding to FIG. 5 with the same reference numeral, a detailed description of the portion with the same reference numeral is omitted.

In the first embodiment described above, the case where the vibration isolator 7 is fixed to the bottom plate 31 of the housing 30 has been described, but the installation example of the vibration isolator 7 is not limited to this. That is, as shown in FIG. 8, the vibration isolator 7 may be installed on the side plate 36 to which the suction pipe 41 of the housing 30 is fixed.

In this case, one end of the bolt 8 is attached to the side plate 36 by welding or the like. The other end side of the bolt 8 fixed to the side plate 36 is a hole 75a of the anti-vibration rubber 75 arranged on the side plate 36 side of the mounting portion 72, a mounting hole 74 of the mounting portion 72, and a mounting portion 72. It is joined to the nut 9 through the hole 75a of the anti-vibration rubber 75 arranged on the side opposite to the side plate 36 side of the above. As a result, the vibration isolator 7 is fixed to the side plate 36 of the housing 30. That is, the anti-vibration device 7 is fixed to the side plate 36 with the anti-vibration rubber 75 interposed between the mounting portion 72 and the side plate 36 and between the mounting portion 72 and the nut 9. ..

In the outdoor unit 3 configured in this way, the vibration of the compressor 10 is transmitted to the suction pipe 41, and the vibration is transmitted to the vibration isolator 7 via the suction pipe 41. Since the anti-vibration device 7 is fixed to the side plate 36 by the bolt 8 and the nut 9 via the anti-vibration rubber 75, it is possible to absorb the vibration transmitted from the suction pipe 41. It has become. Therefore, in the outdoor unit 3 of the second embodiment, the vibration directly transmitted from the compressor 10 to the side plate 36 to which the suction pipe 41 is fixed via the suction pipe 41 is transmitted in the middle of the suction pipe 41. It can be reduced by the vibration isolator 7 installed in.

<Effect in Embodiment 2>
As described above, in the outdoor unit 3 of the second embodiment, the vibration isolator 7 is installed in the middle of the refrigerant pipe 4 (suction pipe 41) of the refrigerant circuit 5 in the outdoor unit 3. Since the anti-vibration device 7 is fixed to the side plate 36 by the bolt 8 and the nut 9 via the anti-vibration rubber 75, it absorbs the vibration transmitted from the compressor 10 via the suction pipe 41. Therefore, the vibration directly transmitted to the side plate 36 to which the suction pipe 41 is fixed can be reduced. Therefore, in the outdoor unit 3, the vibration isolator 7 transmits the vibration transmitted through the side plate 36 to the front panel 30a, the side panel 30ba, the side panel 30bb, the top panel 30c, etc. constituting the housing 30. Since it can be reduced, the generation of vibration noise can be suppressed. Further, since the anti-vibration device 7 is fixed to the side plate 36 of the housing 30 by using the bolt 8 and the nut 9 via the anti-vibration rubber 75, the anti-vibration performance does not depend on the direction in which the vibration is transmitted. Can be obtained.

Embodiment 3.
Next, the outdoor unit 3 according to the third embodiment will be described with reference to FIG. FIG. 9 is a schematic diagram showing an installation example of the vibration isolator 7 in the outdoor unit 3 according to the third embodiment. Since FIG. 9 shows a portion corresponding to FIG. 5 with the same reference numeral, a detailed description of the portion with the same reference numeral is omitted.

In the second embodiment described above, the case where the bolt 8 is welded to the side plate 36 has been described, but the installation example of the vibration isolator 7 is not limited to this. That is, in this case, the head of the bolt 8 provided on one end side is located on the compressor 10 side (internal side of the outdoor unit 3). The other end side of the bolt 8 is the hole 75a of the anti-vibration rubber 75 arranged on the side opposite to the side plate 36 side of the mounting portion 72, the mounting hole 74 of the mounting portion 72, and the side plate 36 side of the mounting portion 72. It penetrates through the hole 75a of the anti-vibration rubber 75 arranged in and the side plate 36 and is joined to the nut 9. As a result, the vibration isolator 7 is fixed to the side plate 36 of the housing 30. That is, the anti-vibration device 7 is provided on the side plate 36 with the anti-vibration rubber 75 interposed between the head of the bolt 8 and the mounting portion 72, and between the mounting portion 72 and the side plate 36, respectively. It is fixed. Although the nut 9 is arranged on the outer side of the side plate 36, it is not directly exposed to the outside of the outdoor unit 3 because it is covered by the side panel 30ba (see FIG. 2) or the like.

In the outdoor unit 3 configured in this way, the vibration of the compressor 10 is transmitted to the suction pipe 41, and the vibration is transmitted to the vibration isolator 7 via the suction pipe 41. Since the anti-vibration device 7 is fixed to the side plate 36 by the bolt 8 and the nut 9 via the anti-vibration rubber 75, it is possible to absorb the vibration transmitted from the suction pipe 41. It has become. Therefore, in the outdoor unit 3 of the third embodiment, the vibration directly transmitted from the compressor 10 to the side plate 36 to which the suction pipe 41 is fixed via the suction pipe 41 is transmitted in the middle of the suction pipe 41. It can be reduced by the vibration isolator 7 installed in.

<Effect in Embodiment 3>
As described above, in the outdoor unit 3 of the third embodiment, the vibration isolator 7 is installed in the middle of the refrigerant pipe 4 (suction pipe 41) of the refrigerant circuit 5 in the outdoor unit 3. Since the anti-vibration device 7 is fixed to the side plate 36 by the bolt 8 and the nut 9 via the anti-vibration rubber 75, it absorbs the vibration transmitted from the compressor 10 via the suction pipe 41. Therefore, the vibration directly transmitted to the side plate 36 to which the suction pipe 41 is fixed can be reduced. Therefore, in the outdoor unit 3, the vibration isolator 7 transmits the vibration transmitted through the side plate 36 to the front panel 30a, the side panel 30ba, the side panel 30bb, the top panel 30c, etc. constituting the housing 30. Since it can be reduced, the generation of vibration noise can be suppressed.

1 air conditioner, 2 indoor unit, 3 outdoor unit, 4 refrigerant pipe, 4a refrigerant pipe, 4b refrigerant pipe, 5 refrigerant circuit, 6 control unit, 7 vibration isolator, 8 bolt, 9 nut, 10 compressor, 11 flow Road switching device, 12 outdoor heat exchanger, 13 expansion valve, 14 indoor heat exchanger, 15 outdoor blower, 16 fan motor, 17 indoor blower, 18 fan motor, 30 housing, 30a front panel, 30ab outlet, 30ba side Panel, 30bb side panel, 30c top panel, 31 bottom plate, 32 partition plate, 33 air passage room, 34 machine room, 35 electrical parts, 36 side plate, 41 suction pipe, 42 discharge pipe, 70 main body, 71 connection pipe, 72 mounting part, 73 connection part, 74 mounting hole, 75 anti-vibration rubber, 75a hole.

Claims

The housing that constitutes the outer shell and
An outdoor unit having a refrigerant circuit pipe and a compressor for compressing a refrigerant supplied through the pipe, which is arranged in the housing.
It is provided with a vibration isolator that is arranged in the middle of the pipe and reduces vibration transmitted from the compressor via the pipe.
The anti-vibration device is
The connection pipe connected to the pipe and
The mounting part to be mounted on the housing and
It has the connection pipe and the main body portion in which the mounting portion is arranged.
The connection pipe is arranged so as to penetrate the main body portion.
The mounting part
A mounting hole through which the fixing tool for fixing to the housing is penetrated is formed in a direction intersecting the arrangement direction of the connecting pipe.
An outdoor unit in which an elastic member is interposed between the mounting portion and the housing.
The anti-vibration device is
The outdoor unit according to claim 1, wherein the elastic member is interposed between the mounting portion and the fixture.
The direction in which the mounting holes are formed is
The outdoor unit according to claim 1 or 2, which is a direction orthogonal to the arrangement direction of the connecting pipe.
The anti-vibration device is
The outdoor unit according to any one of claims 1 to 3, which is fixed to the bottom plate or the side plate of the housing.
The anti-vibration device is
When the fixture is arranged on the side plate of the housing and fixed by the fixture inserted from the outer side of the side plate, the head located on the outer side of the fixture is the housing. The outdoor unit according to claim 4, which is covered with a panel member arranged on the outer surface.
The outdoor unit according to any one of claims 1 to 5, wherein the anti-vibration device is a two-way valve whose connection with the pipe is fixed in an open state.
An air conditioner including the outdoor unit according to any one of claims 1 to 6.