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Rotary fluid machine

A fluid mechanical and rotary technology, applied in the direction of rotary piston machines, rotary piston pumps, mechanical equipment, etc., can solve the problems of refrigerant leakage, poor efficiency, and lack of consideration of the gap between the cylinder wall and piston wall, etc., to achieve suppression Leakage, the effect of achieving efficiency

Inactive Publication Date: 2008-12-17
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, conventional fluid machines did not consider the gap between the cylinder wall and the piston wall at all.
As a result, refrigerant leaks from the high-pressure chamber to the low-pressure chamber, resulting in poor efficiency.
[0006] In particular, in the above-mentioned fluid machine, since the outer compression chamber and the inner compression chamber are formed, the load (gas load) due to the pressure of the refrigerant in the outer compression chamber and the inner compression chamber is not considered. act in different directions, resulting in a gap between the cylinder wall and the piston wall

Method used

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Embodiment 1

[0063] Such as figure 1 ~ As shown in FIG. 3 , this embodiment stipulates that the present invention is applicable to the compressor 1 . The compressor 1 described above is provided in, for example, a refrigerant circuit.

[0064] The refrigerant circuit is configured to perform, for example, at least one of cooling and heating operations. That is, the refrigerant circuit is formed by connecting, for example, an outdoor heat exchanger on the heat source side of the compressor 1, an expansion valve that is an expansion mechanism, and an indoor heat exchanger that is a heat exchanger on the utilization side in the above order. of. And, the refrigerant compressed in the compressor 1 expands in the expansion valve after dissipating heat in the outdoor heat exchanger. The expanded refrigerant absorbs heat in the indoor heat exchanger and returns to the compressor 1 . This cycle is repeated, and the indoor air is cooled by the indoor heat exchanger.

[0065] The above-mentioned...

Embodiment 2

[0121] Next, Embodiment 2 of the present invention will be described in detail with reference to the accompanying drawings.

[0122] In the above-mentioned first embodiment, the width T1 of the cylinder chamber and the width T2 of the piston are changed in two areas. Instead, this implementation makes it change in four areas, such as Figure 7 ~ Figure 9 shown.

[0123] Specifically, the cylinder chamber 50 is divided into four regions on the circumference, and the wide regions Z1 and Z3 with wide widths and the narrow regions Z2 and Z4 with narrow widths are alternately connected to each other. On the other hand, the piston 22 is divided into four regions on the circumference, and the narrow narrow regions W1, W3 and the wide wide regions W2, W4 are alternately connected to each other.

[0124] That is, the above-mentioned cylinder chamber 50, such as Figure 7 As shown, the first region Z1 sandwiching the blade 23 is formed as the wide region Z1 in a range of 90 degrees. ...

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Abstract

The invention provides a rotary fluid machine, especially a rotary fluid machine which solves the problem of the gap between the cylinder and the piston. The rotary fluid machine includes a rotary mechanism (20) including a cylinder (21) having an annular cylinder chamber (50), and being housed in the cylinder chamber and eccentric to the cylinder, and partitioning the cylinder chamber to the outside The annular piston (22) of the compression chamber (51) and the inner compression chamber (52), and the vane (23) arranged in the cylinder chamber to divide each working chamber (51, 52) into a high-pressure side and a low-pressure side , and the cylinder and the piston rotate relative to each other. In addition, the cylinder chamber width ( T1 ) changes around the cylinder chamber so that the gap between the cylinder wall surface and the piston wall surface becomes constant during rotation. Furthermore, the piston width (T2) changes around the piston so that the gap between the cylinder wall surface and the piston wall surface becomes a constant value during the rotation of the piston.

Description

technical field [0001] The invention relates to a rotary fluid machine, in particular to a rotary fluid machine which solves the problem of the gap between the cylinder and the piston. Background technique [0002] Conventionally, as disclosed in Patent Document 1, a fluid machine has a compressor including an eccentrically rotating piston mechanism including a cylinder having an annular cylinder chamber and an eccentrically arranged cylinder housed in the cylinder chamber. Rotary ring piston. In addition, the above-mentioned fluid machine compresses the refrigerant by changing the volume of the cylinder chamber accompanying the eccentric rotational movement of the piston. [0003] [Patent Document 1] Patent Publication No. Hei 6-288358 (Hei 6 = Heisei 6 / 1994) [0004] (The problem to be solved by the invention) [0005] However, in conventional fluid machines, no consideration was given to the gap created between the cylinder wall surface and the piston wall surface. As...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/32F04C29/00F01C21/08F04C23/00
CPCF01C21/08F04C23/001F04C23/008F04C2230/602F04C2240/20F04C18/045F04C18/02F04C18/32
Inventor 增田正典
Owner DAIKIN IND LTD
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