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EP-4050212-B1 - COMPRESSOR AND COMPRESSOR UNIT

EP4050212B1EP 4050212 B1EP4050212 B1EP 4050212B1EP-4050212-B1

Inventors

  • NAKA, Shoujirou
  • KOYAMA, KENJI

Dates

Publication Date
20260506
Application Date
20201116

Claims (7)

  1. A compressor unit comprising: a compressor (1) including a compression mechanism (3) configured to compress a fluid, an accumulator (70) having a second casing (71) being electrically conductive; and a second pipe (3d) being electrically conductive, wherein the compressor (1) comprises: a first casing (4) being electrically conductive; and at least one first pipe (3b) being a first suction pipe and being electrically conductive, the first suction pipe (3b) being not insulated from the compression mechanism (3) and being not electrically insulated from the second casing (71); another one of the first pipes is a discharge pipe (3c) being fixed to the first casing (4) with a first insulator (42) interposed therebetween, the second casing (71) is connected to the first casing (4), and the second pipe (3d) is fixed to the second casing (71) with a third insulator (82) interposed therebetween.
  2. The compressor unit of claim 1, further comprising: a holding member (41) fixed to the first casing (4), wherein the first insulator (42) is fixed to the holding member (41), and the discharge pipe (3c) is fixed to the holding member (41) with the first insulator (42) interposed therebetween.
  3. The compressor unit of claim 1, further comprising: a holding member (41) fixed to the discharge pipe (3c), wherein the first insulator (42) is fixed to the first casing (4), and the first casing (4) is fixed to the holding member (41) with the first insulator (42) interposed therebetween.
  4. The compressor unit of any one of claims 1 to 3, wherein the first insulator (42) is made of any one of glass, resin, or ceramic.
  5. The compressor unit of any one of claims 1 to 4, wherein the first casing (4) includes a fitting (4d) configured to install the first casing (4), and the fitting (4d) is provided with a second insulator (60) configured to electrically insulate an installation destination of the first casing (4) from the fitting (4d).
  6. The compressor unit of any one of claims 1 to 5, wherein the second pipe (3d) is a suction pipe through which the fluid is to be sucked.
  7. The compressor unit of any one of claims 1 to 6, wherein the third insulator (82) is made of any one of glass, resin, or ceramic.

Description

TECHNICAL FIELD The present invention disclosure relates to a compressor and a compressor unit. BACKGROUND ART Some air-conditioning devices include a pipe connected to a compressor and made of an insulating material (see, for example, Patent Document 1). In an example of the patent document described above, a rubber hose is used as an insulator. Each of US 2012/251358 A1, US 5 907 258 A and JP H04 5486 A discloses a compressor configured to compress a fluid, the compressor comprising a first casing being electrically conductive, and at least one first pipe being electrically conductive, the at least one pipe being fixed to the first casing with a first insulator interposed therebetween. WO 2019/077978 A1 discloses a compressor unit with a suction pipe connected to a compressor with interposed insulating means. CITATION LIST PATENT DOCUMENT Patent Document 1: Japanese Unexamined Patent Publication No. H09-002050 SUMMARY TECHNICAL PROBLEM The rubber hose for use in the patent document described above may lead to leakage of a refrigerant. It is an object of the present invention to electrically insulate a pipe for a compressor from the compressor without causing leakage of a refrigerant. SOLUTION TO THE PROBLEM A first aspect of the present disclosure is directed to a compressor unit according to claim 1. The first aspect allows the pipe (3b, 3c) and the first casing (4) to be electrically insulated from each other. A second aspect of the present invention is an embodiment of the first aspect. In the second aspect, the compressor further includes: a holding member (41) fixed to the first casing (4).The first insulator (42) is fixed to the holding member (41), andthe at least one first pipe (3b, 3c) is fixed to the holding member (41) with the first insulator (42) interposed therebetween. According to the second aspect, the first insulator (42) is fixed to the holding member (41). A third aspect of the present invention is an embodiment of the first aspect. In the third aspect, the compressor further includes: a holding member (41) fixed to the at least one first pipe (3b, 3c).The first insulator (42) is fixed to the first casing (4), andthe first casing (4) is fixed to the holding member (41) with the first insulator (42) interposed therebetween. According to the third aspect, the first insulator (42) is fixed to the first casing (4). A fourth aspect of the present invention is an embodiment of any one of the first to third aspects. In the fourth aspect, the first insulator (42) is made of any one of glass, resin, or ceramic. According to the first aspect, the first suction pipe (3b) and the discharge pipe (3c) are both insulated from the first casing (4). A fifth aspect of the present invention is an embodiment of any one of the first to fourth aspects. In the fifth aspect, the first casing (4) includes a fitting (4d) configured to install the first casing (4), andthe fitting (4d) is provided with a second insulator (60) configured to electrically insulate an installation destination of the first casing (4) from the fitting (4d). According to the fifth aspect, a target to which the compressor is fitted is insulated from the first casing (4). A sixth aspect of the present invention is an embodiment of any one of the first to the fifth aspect. In the sixth aspect, the at least one first pipe (3b, 3c) is a discharge pipe through which the fluid is to be discharged, andthe second pipe (3d) is a suction pipe through which the fluid is to be sucked. A seventh aspect of the present invention is an embodiment of any one of the first to sixth aspect. In the seventh aspect, the third insulator (82) is made of any one of glass, resin, or ceramic. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a piping system diagram of an air-conditioning device.FIG. 2 is a cross-sectional view of a compressor.FIG. 3 is an enlarged view of a connector.FIG. 4 illustrates a first variation of the connector.FIG. 5 illustrates a second variation of the connector.FIG. 6 illustrates a third variation of the connector.FIG. 7 illustrates a fourth variation of the connector.FIG. 8 is a cross-sectional view of a compressor unit according to a second embodiment. DESCRIPTION OF EMBODIMENTS «First Embodiment not belonging to the claimed invention» The present disclosure describes a compressor for an air-conditioning device. FIG. 1 is a piping system diagram of an air-conditioning device (100). As illustrated in FIG. 1, the air-conditioning device (100) includes a refrigerant circuit (110). The refrigerant circuit (110) is a closed circuit filled with a refrigerant. The refrigerant circuit (110) includes a compressor (1), a four-way switching valve (130), an outdoor heat exchanger (140), an expansion valve (150), and an indoor heat exchanger (160). The compressor (1), the four-way switching valve (130), the outdoor heat exchanger (140), and the expansion valve (150) are housed in a casing (not shown) of an outdoor unit (170). The indoor heat exchanger