|Publication number||US20050044883 A1|
|Application number||US 10/650,300|
|Publication date||Mar 3, 2005|
|Filing date||Aug 27, 2003|
|Priority date||Aug 27, 2003|
|Also published as||CN1842685A, CN1842685B, EP1671068A1, EP1671068B1, US6851277, US7069741, US20050144976, WO2005022054A1|
|Publication number||10650300, 650300, US 2005/0044883 A1, US 2005/044883 A1, US 20050044883 A1, US 20050044883A1, US 2005044883 A1, US 2005044883A1, US-A1-20050044883, US-A1-2005044883, US2005/0044883A1, US2005/044883A1, US20050044883 A1, US20050044883A1, US2005044883 A1, US2005044883A1|
|Original Assignee||Sishtla Vishnu M.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (5), Classifications (10), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
(1) Field of the Invention
The present invention relates to baffle assembly for use in an economizer chamber for minimizing pressure pulsations.
(2) Description of the Related Art
Float valves are typically used in water cooled chillers to maintain a liquid seal and for controlling coolant flow to the evaporator. In screw chillers, capacity and performance are improved through the use of an economizer cycle. During such a cycle, the economizer flow is introduced into the screw compressor chamber between inlet and outlet ports. As the screw compressor is a positive displacement compressor, it produces high pressure pulsations. The float valve located in the economizer chamber is subjected to these pulsations and can experience failure. What is therefore needed is a design of an economizer which minimizes the pressure pulsations experienced by the float valve.
Accordingly, it is an object of the present invention to provide a baffle for use in an economizer chamber for minimizing pressure pulsations.
In accordance with the present invention, a baffle for use in a refrigerator apparatus comprises a baffle plate comprising a first and a second opposing sides attached to an inner surface of the refrigerator apparatus, a baffle seal plate attached along a third side of the baffle plate, the baffle seal plate attached to the inner surface of the refrigerator apparatus.
It is therefore a central purpose of the present invention to provide a baffle for use in an economizer which serves to substantially reduce in intensity the magnitude of the pulsations experienced by a float valve. With reference to
With reference to
With reference to
In normal operation, liquid from the condenser enters into the economizer 15 chamber which is maintained at a lower pressure by the compressor. The liquid traveling into the spray pipe 13 expands into a two-phase flow with the vapor going into the compressor where it is compressed to higher pressure and is discharged into the condenser. This is achieved by movement of the liquid through the perforations in the spray pipe 13 as described above. Liquid from the economizer 15 chamber travels via a float valve which is not illustrated through discharge pipe 51. In the absence of the baffle plate 11 of the present invention, the pressure pulsations in the economizer chamber are substantial. These pulsations result in a high deflection of the float valve.
However, the baffle of the present invention, comprised of the baffle plate 11 and the baffle seal plate 21, acts as a barrier to reduce the pressure pulsations felt by the float valve and hence reduces the force experienced by the float valve. With reference to
With reference to
It is apparent that there has been provided in accordance with the present invention an economizer chamber for minimizing pressure pulsations which fully satisfies the objects, means, and advantages set forth previously herein. While the present invention has been described in the context of specific embodiments thereof, other alternatives, modifications, and variations will become apparent to those skilled in the art having read the foregoing description. Accordingly, it is intended to embrace those alternatives, modifications, and variations as fall within the broad scope of the appended claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4232533 *||Jun 29, 1979||Nov 11, 1980||The Trane Company||Multi-stage economizer|
|US6220050 *||Nov 5, 1999||Apr 24, 2001||Tecumseh Products Company||Suction accumulator|
|US6536230 *||Jan 22, 2001||Mar 25, 2003||Delphi Technologies, Inc.||A/D baffle for gas pressure pulsation reduction|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7827809||Oct 31, 2007||Nov 9, 2010||Emerson Climate Technologies, Inc.||Flash tank design and control for heat pumps|
|US8020402||Oct 31, 2007||Sep 20, 2011||Emerson Climate Technologies, Inc.||Flash tank design and control for heat pumps|
|US8505331||Feb 22, 2011||Aug 13, 2013||Emerson Climate Technologies, Inc.||Flash tank design and control for heat pumps|
|US9027363 *||Jan 30, 2009||May 12, 2015||Daikin Industries, Ltd.||Economizer having multiple liquid outlets and multiple float expansion valves|
|US20100326130 *||Jan 30, 2009||Dec 30, 2010||Yasutaka Takada||Economizer|
|U.S. Classification||62/509, 62/512, 62/504|
|International Classification||F25B43/00, F25B41/06|
|Cooperative Classification||F25B2400/13, F25B41/065, F25B2400/23, F25B43/006|
|Aug 27, 2003||AS||Assignment|
|Jul 1, 2008||FPAY||Fee payment|
Year of fee payment: 4
|Jul 11, 2012||FPAY||Fee payment|
Year of fee payment: 8