Piston type compressor and method of stepless regulating its transfer quantity

A stepless adjustment, compressor technology, applied in liquid variable capacity machinery, multi-stage pumps, mechanical equipment, etc., can solve the problems of small compressibility and complex structure, and achieve the effect of shortening the deflation time.

Inactive Publication Date: 2008-03-05
HOERBIGER KOMPRESSORTECHNIK HLDG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this adjustment by means of the actuation of the claws is applicable in principle to the adjustment of the average delivery rate between 10% and 100%, it will entail another completely different disadvantage: the compressor alternately operates under full load or run under no load
Devices of this type known, for example, from AT 403 835 B1 are used in those systems, ie they are very suitable due to the low compressibility of the operating fluid used, but have the disadvantage of a relatively complex construction and the need for additional hydraulic auxiliary energy, which This energy must be provided by an additional unit

Method used

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  • Piston type compressor and method of stepless regulating its transfer quantity
  • Piston type compressor and method of stepless regulating its transfer quantity
  • Piston type compressor and method of stepless regulating its transfer quantity

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Embodiment Construction

[0033] In all the embodiments according to FIGS. 1 to 6 , the suction valve 1 of the compressor is provided with a lifting claw 2 , which pushes at least one seal 5 of the suction valve 1 by means of a lifting piston 4 acted upon by gas pressure. It remains open in a part of the compressor's working stroke that can be controlled by means of a switchable control valve 3, through which the gas pressure loading is controlled, the lifting piston is located in the lifting cylinder, the gas pressure is applied to the lifting piston and the lifting between cylinders. Here the lifting piston 4 is at rest and fixed in the center of the suction valve 1 and thus forms with its outer circumference directly axially a guide for the lifting claw 2 or the lifting claw 2 forms the lifting cylinder 6 that moves axially therewith. Guide in sleeve-shaped upper part. The position shown in FIG. 1 is pressed into the upper end position by means of a helical spring 7, the lifting piston 4 rests on t...

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Abstract

For stepless capacity control of a reciprocating piston compressor, an unloader (2) arranged on a suction valve (1) keeps open said suction valve (1) over a thereby controllable portion of the working cycle of the compressor by means of an unloading piston (4) biased by gas pressure via a control valve (3). The gas pressure biasing the unloading piston (4) is always above the gas pressure required to overcome the maximum possible reverse flow force, whereby a controllable partial discharge of the unloading cylinder (6) is performed in each phase of the working cycle up to the closing of the suction valve (1) by means of the control valve (3), which is designed to switch rapidly. The theoretical discharge time of the entire discharging volume for the partial discharge is preferably maximal nearly equal or even less than twice the duration of the working cycle.

Description

technical field [0001] The invention relates to a method for stepless adjustment of the delivery rate of a piston compressor, wherein the lifting pawl mounted on at least one automatic suction valve of the compressor is carried out by means of a lifting piston which can be loaded with gas pressure through a switchable control valve Keeping at least one seal of the suction valve open during the part of the compression stroke that can be controlled by means of the control valve, and also relates to a corresponding piston compressor with a continuously variable delivery rate adjustment device, comprising a device Lifting claws on at least one automatic suction valve of the compressor, the lifting claws move at least one seal of the suction valve during the working stroke of the compressor by means of a lifting piston that can be loaded with gas pressure through a switchable control valve The part controlled by the control valve remains open. Background technique [0002] Compr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/03F04B39/10F04B27/02F04B39/08F04B49/06F04B49/24
CPCF04B49/243F04B39/08
Inventor 伯恩哈德·施皮格尔彼得·施泰因卢克冈瑟·马叙迈克尔·米克斯
Owner HOERBIGER KOMPRESSORTECHNIK HLDG GMBH
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