Compressor and refrigeration cycle device

Patent metadata

Field	Value
Publication number	US-11971201-B2
Application number	US-202117305736-A
Country	US
Kind code	B2
Filing date	Jul 14, 2021
Priority date	Jan 28, 2019
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

A compressor of an embodiment includes three suction pipes. A first center of a first suction pipe, a second center of a second suction pipe, and a third center of a third suction pipe are positioned at vertices of a triangle. A first distance between the first center and a center of a compressor main body is smaller than a second distance between the second center and the center of the compressor main body and a third distance between the third center and the center of the compressor main body. The first suction pipe is connected to a first suction port on an uppermost side. A second virtual plane on which a central axis of a main curved pipe part of the second suction pipe is disposed and a third virtual plane on which a central axis of a main curved pipe part of the third suction pipe is disposed are inclined to opposite sides from each other with respect to a first virtual plane on which a central axis of a main curved pipe part of the first suction pipe is disposed.

First claim

What is claimed is:

1. A compressor comprising:
a compressor main body which houses a plurality of compression mechanism units and an electric motor unit driving the plurality of compression mechanism units in a case;
an accumulator supported by the compressor main body and including a refrigerant introduction part at an upper portion thereof; and
three suction pipes penetrating a bottom portion of the accumulator, having one end sides which open inside the accumulator, and having the other end sides connected to three suction ports provided in the case, wherein
the three suction pipes are a first suction pipe, a second suction pipe, and a third suction pipe,
the three suction pipes are disposed at a portion penetrating the bottom portion of the accumulator so that a first center of a first flow path cross section of the first suction pipe, a second center of a second flow path cross section of the second suction pipe, and a third center of a third flow path cross section of the third suction pipe are positioned at vertices of a triangle with all three angles acute as viewed from above the accumulator,
the first suction pipe is disposed so that a first distance between the first center and a center of the compressor main body is smaller than a second distance between the second center and the center of the compressor main body and a third distance between the third center and the center of the compressor main body,
the other end side of the first suction pipe is connected to a first suction port which is positioned uppermost among the three suction ports,
the three suction pipes include main curved pipe parts which are curved from below the accumulator toward the three suction ports,
a second virtual plane on which a central axis of the main curved pipe part of the second suction pipe is disposed and a third virtual plane on which a central axis of the triam curved pipe part of the third suction pipe is disposed are inclined to opposite sides from each other with respect to a first virtual plane on which a central axis of the main curved pipe part of the first suction pipe is disposed,
the other end side of the third suction pipe is connected to a third suction port which is positioned lowermost among the three suction ports,
θ 2 <θ 3 is established when an inclination angle of the second virtual plane with respect to the first virtual plane is θ 2 and an inclination angle of the third virtual plane with respect to the first virtual plane is θ 3 , and
a center of the accumulator is located on the first virtual plane, and inside the triangle whose vertices are the first center, the second center, and the third center on the bottom surface of the accumulator.

2. The compressor according to claim 1 , wherein the second suction pipe and the third suction pipe each include:
an upper straight pipe part penetrating the bottom portion of the accumulator;
a lower straight pipe part connected to the suction port of the case;
a sub-curved pipe part curved from a lower end of the upper straight pipe part toward the first virtual plane; and
an intermediate straight pipe part disposed between the sub-curved pipe part and the main curved pipe part.

3. The compressor according to claim 1 , wherein, when a distance from a straight line connecting the second center and the third center to the first center is L 1 and a distance between the second center and the third center is L 2 , L 1 <L 2 is established.

4. The compressor according to claim 3 , wherein, when a distance between a first opening center on the other end side of the first suction pipe and a second opening center on the other end side of the second suction pipe along a central axis of the compressor main body is P 1 and a distance between the second opening center on the other end side of the second suction pipe and a third opening center on the other end side of the third suction pipe along the central axis of the compressor main body is P 2 , L 2 <P 1 <P 2 is established.

5. The compressor according to claim 1 , wherein the three suction ports are disposed to overlap the first virtual plane as viewed from above the accumulator.

6. A refrigeration cycle device comprising:
the compressor according to claim 1 ;
a radiator connected to the compressor;
an expansion device connected to the radiator; and
a heat absorber connected to the expansion device.

Assignees

• Toshiba Carrier Corp

Inventors

• Hirayama Takuya
• Shida Shogo

Classifications

• F25B31/026 Primary

  with compressor of rotary type · CPC title

• F25B41/40

  Fluid line arrangements · CPC title

• F04C2240/804

  Accumulators for refrigerant circuits · CPC title

• F25B43/006 Primary

  Accumulators · CPC title

• F04C29/12

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title