Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for Controlling Delivery Quantity, and Reciprocating Compressor Having Delivery Quantity Control

a reciprocating compressor and quantity control technology, applied in the direction of pump components, positive displacement liquid engine, pump control, etc., can solve the problems of high stress-requiring, high maintenance effort, and relatively high wear of the closing body of the intake valve and the pressure valve, so as to achieve the effect of reducing the risk of damage, and improving the service li

Inactive Publication Date: 2012-08-16
BURCKHARDT COMPRESSION AG
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a better method for controlling the delivery quantity of a reciprocating compressor. The method involves influencing the movement of the closing body of the intake valve during the compression cycle by an unloader driven by a control device. This method has two main advantages: it reduces the impact-stress-requirement of the compressor valves and it reduces the wear of the compressor components. The invention also includes a reciprocating compressor with this improved delivery quantity control.

Problems solved by technology

This method has the disadvantage that the compressor valves, as used on the intake side and, in particular, those used on the pressure side, still have a high stress-requirement, particularly when the compressor system is run using continuously variable backflow regulation methods.
A disadvantage of this known method is the fact that the closing body of the intake valve and of the pressure valve is subject to relatively high wear, which requires a correspondingly high maintenance effort.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for Controlling Delivery Quantity, and Reciprocating Compressor Having Delivery Quantity Control
  • Method for Controlling Delivery Quantity, and Reciprocating Compressor Having Delivery Quantity Control
  • Method for Controlling Delivery Quantity, and Reciprocating Compressor Having Delivery Quantity Control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032]FIG. 1 shows a longitudinal cross-section through a controllable valve 1 comprising a compressor housing 4 with an intake valve 5 arranged therein, whose position is influenced by an unloader 6, wherein the unloader 6 is actuated by a control device 2, arranged outside of the compressor housing 4, via a connection means 7, in the form of a connection rod.

[0033]The compressor housing 4 comprises a lamp 4a, a gas space 4b, a compression space 4c and a cover 4d, wherein the compressor housing 4 also comprises a non-depicted or, as the case may be, an unseen pressure valve 8, via which the compressed fluid may escape from the compression space 4c. The self-acting intake valve 5 comprises a valve seat 5a, a closing body 5b, which is mounted so as to be movable in a stroke direction B and is referred to in the following as valve plate 5b, a valve backstop 5c, as well as a return spring 5d. The unloader 6 comprises a plurality of gripper extensions 6a or fingers 6a, a guide 6b as wel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for delivery quantity control of a reciprocating compressor, wherein the motion of a closing organ (5b) of an automatic suction valve (5) is influenced during at least one part of a cycle of the crankshaft by means of a refraction gripper (6), wherein the method comprises a continuously variable return flow control, wherein the retraction gripper (6) contacts the closing organ (5b) and prevents the same from closing during a first partial segment (K1) of the cycle of the crankshaft, and wherein the retraction gripper (6) is retracted during a second partial segment (K2) of the cycle of the crankshaft and the closing organ (5b) is closed, wherein the retraction gripper (6) is retracted such that the speed of the moving closing organ (5b) is reduced prior to contacting the suction valve (5).

Description

[0001]The invention concerns a method for controlling delivery quantity of a reciprocating compressor according to the preamble of claim 1. The invention further concerns a reciprocating compressor with delivery quantity control according to the preamble of claim 12.BACKGROUND ART[0002]Documents EP 0 801 227 A2 and EP 1 400 692 disclose a method for influencing the pressure-dependent, self-acting, periodic opening movement of a closing body of an intake valve of a reciprocating compressor by means of a control device which influences the closing body, as necessary, over at least a part of the crank rotation. Since the service life of self-acting compressor valves, as mostly used on the intake and the pressure side, is primarily influenced by the impact-stress-requirement of the alternating impingement of the actual closing body on, respectively, the seat or backstop, the above-mentioned documents disclose a method in which the intake valve is forcefully opened before reaching pressu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F04B49/22
CPCF04B39/08F04B2205/05F04B49/246F04B49/243
Inventor ALLENSPACH, ANDREASAIGNER, ROLAND
Owner BURCKHARDT COMPRESSION AG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com