Quantcast

Self-contained regulating valve, and compression type refrigerating machine having the same

Imported: 24 Feb '17 | Published: 06 Jan '04

Kenji Ueda

USPTO - Utility Patents

Abstract

A self-operated regulating valve has a spool (

13) moving axially in an internal space of a cylindrical valve body (

11). One pressure P

1 acts on one end surface of the spool (

13), and other pressure P

2 acts on the other surface of the spool (

13). A through-hole (

13

a) is provided in the spool (

13). When a difference between the one pressure P

1 and the other pressure P

2 exceeds a set value, the through-hole (

13

a) and pipe lines (

12) connected to the valve body (

11) communicate to bring the self-operated regulating valve into an open state.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural drawing showing a self-operated regulating valve according to a first embodiment of the present invention.

FIG. 2 is a structural drawing showing a self-operated regulating valve according to a second embodiment of the present invention.

FIG. 3 is a structural drawing showing a self-operated regulating valve according to a third embodiment of the present invention.

FIG. 4 is a system diagram showing a turbo-refrigerating machine according to a fourth embodiment of the present invention.

FIG. 5 is a system diagram showing a turbo-refrigerating machine according to a fifth embodiment of the present invention.

FIG. 6 is a system diagram showing a turbo-refrigerating machine according to a sixth embodiment of the present invention.

FIG. 7 is a system diagram showing a turbo-refrigerating machine according to a seventh embodiment of the present invention.

FIG. 8 is a system diagram showing a turbo-refrigerating machine according to an eighth embodiment of the present invention.

FIG. 9 is a system diagram showing a multistage compression turbo-refrigerating machine according to prior art.

Claims

1. A self-operated regulating valve characterized in that

2. A multistage compression refrigerating machine having an inter-cooler, characterized in that

3. A compression refrigerating machine having a compressor configured such that

4. A compression refrigerating machine having a compressor configured such that

5. A compression refrigerating machine comprising a main refrigerant system and a lubrication system provided separately and independently,

6. A self-operated regulating valve characterized in that

7. A compression refrigerating machine having a compressor configured such that

8. A compression refrigerating machine having a compressor configured such that

9. A compression refrigerating machine comprising a main refrigerant system and a lubrication system provided separately and independently,

10. A compression refrigerating machine having a compressor configured such that