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Compressor

A compressor and compression mechanism technology, applied in the field of compressors, can solve problems such as closing delay, reed valve starting volume increase, and volumetric efficiency decline, so as to reduce the loss of ejection pressure, suppress closing delay and opening delay, and improve efficiency effect

Inactive Publication Date: 2007-01-10
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, when the compressor is operating at high speed, the reed valve bends greatly, in other words, the actuation amount of the reed valve becomes large, so even if the compression chamber is switched from high pressure to low pressure, it will not close immediately, that is, shutdown delay
In such a state, there will be a problem that the high-pressure refrigerant flows back from the protection box to the compression chamber, resulting in a decrease in volumetric efficiency.

Method used

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Embodiment 1

[0046] The compressor of the present embodiment 1, such as figure 1 and figure 2As shown, it is constituted by a so-called rotary piston type rotary compressor 1 (hereinafter referred to as "compressor"). The compressor 1 houses a compression mechanism 20 and an electric motor 30 that drives the compression mechanism 20 in a dome-shaped protective case 10, and is configured as a fully-sealed type. In addition, the compressor 1 is constituted by an inverter compressor whose motor 30 is controlled by an inverter and whose capacity can be changed stepwise or continuously. Further, the compressor 1 drives the compression mechanism 20 by the electric motor 30 , sucks in the refrigerant, compresses the refrigerant, and discharges the refrigerant, thereby circulating the refrigerant in the refrigerant circuit.

[0047] A suction pipe 14 is provided at the lower part of the protective case 10 , and a discharge pipe 15 is provided at the upper part of the protective case 10 .

[00...

Embodiment 2

[0077] Next, Embodiment 2 of the present invention will be described with reference to the drawings.

[0078] Present embodiment 2, as shown in Figure 8 and Figure 9 As shown, in the first embodiment, the valve fixing portion 42 a of the valve stopper 42 is formed by the polymer actuator 50 , and the guide portion 42 b of the valve stopper 42 is formed instead.

[0079] The entirety of the guide portion 42 b of the valve stopper 42 is constituted by a polymer actuator 50 . This polymer actuator 50, as shown in FIG. 10, differs from the first embodiment in that it is constituted by an ion conduction actuator.

[0080] The polymer actuator 50 has a property of bending and deforming according to a voltage input, and electrodes 53 and 54 are provided on both sides of a polymer electrolyte 57 containing water. Furthermore, the outer sides of the respective electrodes 53 and 54 are covered with a resin film or the like for protection. The electrodes 53 and 54 are connected to a ...

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Abstract

A reed valve (41) and a valve holding member (42) for the reed valve (41) are arranged at a discharge opening (29) of a compressing mechanism (20) for compressing a fluid. In the valve holding member (42), a polymer actuator (50) is formed on the end side of a valve fixing section (42a) for fixing the reed valve (41). The length of the polymer actuator (50) extends and contracts to vary a fixation length (A) of the reed valve (41), varying the rigidity of the reed valve (41). By this, the response of the reed valve (41) is adequately controlled depending on capacity.

Description

technical field [0001] The present invention relates to compressors, and in particular to measures for reducing discharge pressure loss. Background technique [0002] Compressors have traditionally been installed, for example, in air conditioners to compress refrigerant in a refrigerant circuit. As such a compressor, for example, a rotary compressor in which a compressor and an electric motor that drives the compressor are accommodated in a hermetic type protective case (casing) has been known. [0003] In the compression mechanism, once the motor is driven, the piston performs rotational motion in the cylinder chamber. With this rotation, the low-pressure refrigerant is sucked into the suction chamber from the suction port, and at the same time, the refrigerant is compressed into a high pressure in the compression chamber, and is ejected from the discharge port into the protection box. [0004] A reed valve and a valve retainer of the reed valve are generally provided at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/10
CPCF04C29/128F04C23/008F04B53/1085F04C18/3564Y10T137/7892F04B39/1073
Inventor 东洋文增田正典鉾谷克己
Owner DAIKIN IND LTD
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