Two-stage rotary type expander, expander-integrated compressor, and refrigeration cycle device

A circulatory device, expander technology, applied in the direction of rotary piston machinery, rotary piston engine, compressor, etc., can solve the problem of pulsation and other problems, and achieve the effect of suppressing pulsation

Active Publication Date: 2010-01-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, as a result of intensive research, the inventors of the present application have found that even in this type of two-stage rotary expander, when the working fluid is sucked in, there is still pulsation

Method used

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  • Two-stage rotary type expander, expander-integrated compressor, and refrigeration cycle device
  • Two-stage rotary type expander, expander-integrated compressor, and refrigeration cycle device
  • Two-stage rotary type expander, expander-integrated compressor, and refrigeration cycle device

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Experimental program
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Embodiment approach 1

[0050] "Structure of expander-integrated compressor"

[0051] Such as figure 1 As shown, the expander-integrated compressor 10 according to the present embodiment includes: an airtight container 11 ; a scroll-type compression mechanism 1 disposed on the upper side in the airtight container 11 ; Stage rotary expansion mechanism3. A rotary electric motor 6 including a rotor 6 a and a stator 6 b is disposed between the compression mechanism 1 and the expansion mechanism 3 . The compression mechanism 1 , the rotor 6 a of the rotary motor 6 , and the expansion mechanism 3 are connected by a rotary shaft 7 .

[0052] The compression mechanism 1 has: a fixed scroll 21 , an orbiting scroll 22 , an Oldham ring 23 , a bearing member 24 , and a muffler 25 . A suction pipe 26 and a discharge pipe 27 are connected to the airtight container 11 . The orbiting scroll 22 is fitted to the eccentric shaft 7 a of the rotary shaft 7 , and its rotational movement is restricted by an Oldham ring...

Embodiment approach 2

[0092] Embodiment 2 is an embodiment in which the suction hole 71 of the expansion mechanism 3 is modified. Since it is the same as Embodiment 1 except for the suction hole 71, description thereof will be omitted.

[0093] Such as Figure 11A and Figure 11B As shown, in Embodiment 2, the suction hole 71 of the expansion mechanism 3 is formed in the upper end plate 50 . That is, in the second embodiment, the downstream end of the suction passage 90 formed on the upper end plate 50 faces the working chamber in the first cylinder 41, and the downstream end of the suction passage 90 ( Figure 11Amiddle lower end) becomes the suction hole 71. The suction hole 71 opens downward toward the working chamber in the first cylinder 41 .

[0094] In this embodiment, the communication path 43a is in a non-communicating state with the upstream first working chamber 55a or the downstream first working chamber 55b communicating with the suction hole 71 during the suction process, and is i...

Embodiment approach 3

[0098] Embodiment 3 is also a mode in which the suction hole 71 of the expansion mechanism 3 is changed in Embodiment 1. Since it is the same as Embodiment 1 except for the suction hole 71, description thereof will be omitted.

[0099] Such as Figure 12A and Figure 12B As shown, in the third embodiment, the suction hole 71 of the expansion mechanism 3 is formed across the first cylinder 41 and the upper end plate 50 . That is, in the third embodiment, the suction hole 71 is formed by the hole 71d formed by the longitudinal groove formed in the inner peripheral surface of the first cylinder 41 and the hole 71c formed in the upper end plate 50 . The hole 71 d opens radially inward toward the working chamber in the first cylinder 41 , and the hole 71 c opens downward toward the working chamber in the first cylinder 41 .

[0100] Also in this embodiment, the communication passage 43a is formed so as not to communicate with the working chambers 55a and 55b during the suction p...

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Abstract

An expander-integrated compressor (10) has a two-stage rotary type expansion mechanism (3) having a first cylinder (41) and a second cylinder (42). In the expansion mechanism (3) are formed a suction hole (71) facing an operation chamber on the upstream side in the first cylinder (41) and a discharge hole facing an operation chamber on the downstream side in the second cylinder (42). A middle plate (43) is provided between the first cylinder (41) and the second cylinder (42). In the middle plate (43), there is formed a communication path (43a) for allowing communication between the operation chamber on the downstream side in the first cylinder (41) and the operation chamber on the upstream side in the second cylinder (42). The communication path (43a) is not communicated with the operation chamber in the fist cylinder (42) during a suction process and is communicated with the operation chamber on the downstream side in the first cylinder (41) at the time when the suction process is completed or after that.

Description

technical field [0001] The present invention relates to a two-stage rotary expander, an expander-integrated compressor having a two-stage rotary expansion mechanism, and a refrigeration cycle device. Background technique [0002] Conventionally, there is known a power recovery type refrigeration cycle apparatus that recovers the expansion energy of a working fluid by an expander and utilizes the recovered energy as a part of the input of a compressor (for example, refer to (Japanese) Unexamined Patent Publication No. 2001-116371 Bulletin). [0003] In addition, as one type of expander, there is known a rotary expander, which has a cylinder and a piston that rotates eccentrically in the cylinder, and a volume is formed between the cylinder and the piston accompanying the eccentric rotation of the piston. A studio of change. In the rotary expander, the suction process of sucking the working fluid into the working chamber from the suction hole, the expansion process of expand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01C11/00F01C1/356F01C13/04F01C20/26F04C23/02F25B1/00F25B1/04F25B11/02
CPCF25B9/06F04C11/006F25B1/04F01C21/18F04C23/008F01C1/3442F25B2400/04F01C21/106F25B9/008F25B2400/14F04C18/0215
Inventor 尾形雄司田口英俊长谷川宽高桥康文冈市敦雄
Owner PANASONIC CORP
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