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Volumetric screw compressor

A technology of screw compressors and compressors, applied in the direction of rotary piston machinery, mechanical equipment, machines/engines, etc., can solve problems such as damage, unrecoverable compressor working capacity, failure, etc., and achieve reliability improvement, easy assembly and The effect of maintenance, reducing the need for repair or replacement

Inactive Publication Date: 2007-04-18
莱富康有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The application of tension on a mechanical part such as a rod after a certain time presents a risk of damage or even failure, especially at the end of the rod connected to the slide valve, which has the further disadvantage of having an irrecoverable effect on the operating capacity of the compressor damage
[0018] Another disadvantage comes from the fact that any damage or failure of the above mentioned rods requires repair or replacement, which always causes problems for the user due to the costs and waits associated with this and the time of plant downtime

Method used

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  • Volumetric screw compressor
  • Volumetric screw compressor
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Embodiment Construction

[0051] A displacement screw compressor according to the invention is shown in FIG. 1 , which is indicated in its entirety by the reference numeral 1 .

[0052] A displacement compressor 1 is of a type already known to those skilled in the art, comprising a housing 2 with an inlet cavity 3, an output cavity 4 and a pair of screw rotors, only one of which can be seen in the figure and shown in the accompanying drawings Mark 5 indicates that the pair of screw rotors are located between the inlet cavity 3 and the output cavity 4 .

[0053] The displacement compressor 1 also comprises a container 6, in this case an oil sump formed on the bottom 2a of the casing 2, which contains a high-pressure fluid O, such as oil.

[0054] In another embodiment not shown in the drawings, the container of the fluid used to drive the piston can be constituted by an oil tank installed outside the casing and communicated with it by means of a pipe.

[0055] In addition, the piston can also be actuat...

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Abstract

Volumetric compressor comprising a casing forming an intake chamber and a delivery chamber, a pair of screw rotors coming between the intake chamber and delivery chamber, a container for containing a high-pressure fluid, associated with the casing, a capacity regulating device associated with the casing, which includes a slide valve cooperating with the rotors, a fluid-operated actuator comprising a cylinder complete with a bottom and a head with a through hole for the passage of a stem having one end associated with a piston sliding inside the cylinder and the opposite end associated with the slide valve, channels obtained in the cylinder, a pipe for delivering the fluid, which connects the container to one of the channels and outlets for the fluid which connect the channels to the intake chamber, shut-off solenoid valves installed inside the outlets and a control unit connected to the shut-off solenoid valves. The top end of the slide valve faces the delivery chamber so that the stem is submitted to a compressive force.

Description

technical field [0001] The present invention relates to an improved design of displacement screw compressors, and more particularly to screw compressors of this type, which include capacity adjustment devices. [0002] More precisely, the invention relates to a screw compressor comprising a casing comprising an inlet chamber with an inlet valve and an outlet chamber with an outlet valve. [0003] A pair of screw rotors meshing with each other is installed between the inlet cavity and the output cavity, and the bottom of the casing is an oil storage tank for lubricating oil. Background technique [0004] It is known that displacement screw compressors of the type briefly described above comprise a capacity regulating device comprising a slide valve cooperating externally with this rotor and in parallel to the longitudinal axes of said two rotors The longitudinal direction is moved by a fluid-operated actuator. [0005] A fluid-operated actuator comprises a cylinder having a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C28/12F04C18/16
CPCF04C28/125F04C18/16
Inventor 恩里科·法乔安德烈亚·托宁
Owner 莱富康有限公司