U.S. patent application number 12/051884 was filed with the patent office on 2008-09-25 for oil circulation system for a compressor.
Invention is credited to Chung-Hsien Chen, Shang-Shung Jen, Shih-Ping Liu.
Application Number | 20080230317 12/051884 |
Document ID | / |
Family ID | 39773591 |
Filed Date | 2008-09-25 |
United States Patent
Application |
20080230317 |
Kind Code |
A1 |
Jen; Shang-Shung ; et
al. |
September 25, 2008 |
Oil Circulation System For A Compressor
Abstract
An oil circulation system for a compressor comprises a control
valve body integrated therein with a pressure sensor, a
differential pressure sensor and a temperature sensor. The control
valve body is further integrated therein with a temperature control
valve connected to an external cooler for lowering a temperature of
a hydraulic oil, an oil filter for filtering the cooled hydraulic
oil into a clean hydraulic oil, and a pressure relief valve for
relieving a pressure of the clean hydraulic oil, which is then
circulated back into the compressor for use. The integration of the
aforementioned components effectively downsizes an entire set of
machinery comprising the compressor and the oil circulation system
and increases an efficiency of the compressor.
Inventors: |
Jen; Shang-Shung; (Taipei,
TW) ; Chen; Chung-Hsien; (Taipei, TW) ; Liu;
Shih-Ping; (Taipei, TW) |
Correspondence
Address: |
FRENKEL & ASSOCIATES
3975 UNIVERSITY DR., STE. 330
FAIRFAX
VA
22030
US
|
Family ID: |
39773591 |
Appl. No.: |
12/051884 |
Filed: |
March 20, 2008 |
Current U.S.
Class: |
184/6.22 ;
184/6.24 |
Current CPC
Class: |
F04B 39/0207 20130101;
F04C 29/021 20130101 |
Class at
Publication: |
184/6.22 ;
184/6.24 |
International
Class: |
F01M 1/10 20060101
F01M001/10; F01M 5/00 20060101 F01M005/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 20, 2007 |
CN |
096109607 |
Claims
1. An oil circulation system for a compressor, comprising: a
control valve body integrated therein with a pressure sensor, a
differential pressure sensor and a temperature sensor, wherein the
control valve body is further integrated therein with a temperature
control valve connected to an external cooler for lowering a
temperature of a hydraulic oil, an oil filter for filtering the
hydraulic oil into a clean hydraulic oil, and a pressure relief
valve for relieving a pressure of the filtered hydraulic oil, which
is then circulated back into the compressor for use.
2. The oil circulation system as claimed in claim 1, wherein the
control valve body is connected to external oil pipes by a
plurality of square flanges.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Technical Field
[0002] The present invention relates to an oil circulation system
and, more particularly, to an oil circulation system for a
compressor.
[0003] 2. Description of Related Art
[0004] In a conventional oil circulation system for a compressor,
as shown in FIG. 1, a hydraulic oil is pumped from an oil tank 10
through a temperature control valve 12 to an external oil filter
14. A cooler 16 is usually provided upstream the temperature
control valve 12 for controlling a temperature of the hydraulic oil
at a level most appropriate for operation of the compressor. The
hydraulic oil is then circulated from the external oil filter 14 to
the compressor 18 for use. In addition, it is necessary to provide
a temperature sensor 20 between the temperature control valve 12
and the oil filter 14 for sensing the temperature of the hydraulic
oil, and a pressure relief valve 22 between the oil filter 14 and
the oil tank 10 for releasing an excess of the hydraulic oil back
into the oil tank 10.
[0005] In the aforementioned oil circulation system for the
compressor 18, a plurality of components are required, including
the oil tank 10, the oil filter 14, the cooler 16, the temperature
control valve 12, the temperature sensor 20, etc. As a result, an
overall volume of an entire set of machinery comprising the
compressor 18 and the oil circulation system cannot be reduced.
Besides, an efficiency of the compressor 18 decreases because the
more components there are, the more power tends to be wasted.
Therefore, impracticality is one of the major drawbacks of
conventional oil circulation systems for compressors.
SUMMARY OF THE INVENTION
[0006] In view of the above, the present invention provides an oil
circulation system for a compressor to overcome the drawbacks
associated with prior art oil circulation systems for
compressors.
[0007] A primary objective of the present invention is to provide
an oil circulation system for a compressor, wherein a temperature
control valve, a temperature sensor, a differential pressure
sensor, a pressure sensor, an oil filter, a cooler and a pressure
relief valve are all integrated together and installed in the
hydraulic oil circulation system to save space and increase an
efficiency of the compressor.
[0008] To achieve this end, the present invention provides an oil
circulation system for a compressor, comprising a control valve
body which is integrated therein with a pressure sensor, a
differential pressure sensor and a temperature sensor. The control
valve body is further integrated therein with a temperature control
valve connected to an external cooler for lowering a temperature of
a hydraulic oil, an oil filter for filtering the cooled hydraulic
oil into a clean hydraulic oil, and a pressure relief valve for
relieving a pressure of the clean hydraulic oil, which is then
circulated back into the compressor for use. The integration of the
aforementioned components effectively downsizes an entire set of
machinery comprising the compressor and the oil circulation system
and increases an efficiency of the compressor.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The invention as well as a preferred mode of use, further
objectives and advantages thereof will best be understood by
reference to the following detailed description of an illustrative
embodiment when read in conjunction with the accompanying drawings,
wherein:
[0010] FIG. 1 is a block diagram showing a prior art oil
circulation system for a compressor; and
[0011] FIG. 2 is an oil circulation system for a compressor
according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0012] Referring to FIG. 2, an oil circulation system for a
compressor according to the present invention comprises a control
valve body 24, which is integrated therein with a temperature
control valve 241, a pressure sensor 246, a differential pressure
sensor 244, a temperature sensor 243, a temperature control valve
241, an oil filter 242 and a pressure relief valve 245. The
temperature control valve 241 is connected to an external cooler 25
and further connected to a first end of the oil filter 242, while
the temperature sensor 243 is provided between the oil filter 242
and the temperature control valve 241. The differential pressure
sensor 244 is connected to the first end and a second end of the
oil filter 242 for sensing a pressure difference across the oil
filter 242. The second end of the oil filter 242 is further
connected to the pressure relief valve 245, which has an outlet end
connected to the pressure sensor 246 for sensing an outlet pressure
of a hydraulic oil. Thus, the hydraulic oil pumped from an oil tank
26 will go through a series of control processes in the control
valve body 24 before flowing into a compressor 27, where the
hydraulic oil is actuated by a motor 28 to compress air. Therefore,
the present invention not only reduces an overall volume of an
entire set of machinery comprising a compressor and a conventional
oil circulation system, but also increases an efficiency of the
compressor. Moreover, the control valve body according to the
present invention is connected to external oil pipes by a plurality
of square flanges (not shown).
[0013] Hence, the present invention achieves the desired effects by
providing a breakthrough in the technical structure of prior art.
Further, the present invention is not easily conceivable by people
skilled in the art and has never been disclosed prior to this
application. In addition, the usefulness and non-obviousness of the
present invention apparently meet the requirements for patent
application. Therefore, an application for patent of the present
invention is now filed for examination.
[0014] It should be noted that the embodiment of the present
invention described above is not intended to limit the scope of the
present, but to illustrate the technical content and features of
the present invention, so that the present invention can be
understood and carried out by those skilled in the art. Therefore,
all equivalent changes or modifications made to the described
embodiment are encompassed by the appended claims provided such
changes or modifications do not depart from the spirit of the
present invention.
* * * * *