EP1738119A1 - A cooling device and control method - Google Patents
A cooling device and control methodInfo
- Publication number
- EP1738119A1 EP1738119A1 EP05708866A EP05708866A EP1738119A1 EP 1738119 A1 EP1738119 A1 EP 1738119A1 EP 05708866 A EP05708866 A EP 05708866A EP 05708866 A EP05708866 A EP 05708866A EP 1738119 A1 EP1738119 A1 EP 1738119A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- solenoid valve
- refrigerant
- stop state
- pass line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/026—Compressor control by controlling unloaders
- F25B2600/0261—Compressor control by controlling unloaders external to the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2503—Condenser exit valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2507—Flow-diverting valves
Definitions
- This invention relates to a cooling device and control method that includes a cooling circuit which prevents the migration of refrigerant.
- the aim of this invention is to realize a cooling device and its control method that prevents migration of refrigerant that occurs in the stop state of a compressor and that enhances the compressor start-up at the beginning of operation period that is right after the stop state period.
- Fig 1 is a perspective representation of a cooling device
- Fig 2 is a schematic representation of a cooling circuit
- FIG. 1 is a schematic representation of a cooling circuit at an alternative application of the invention.
- Cooling circuit (9) that achieves the cooling cycle and that is utilized for cooling devices (1) such as refrigerators and air conditioners include a compressor (2); an evaporator (3) that sucks the thermal energy in the environment that is cooled; a condenser (4) that transfers the thermal energy to the outer environment; a capillary tube (5) that expands the refrigerant that leaves the condenser (4) and transfers the refrigerant to the evaporator (3); a preferably two way solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of compressor (2) and that rests between the condenser (4) and the capillary tube (5); a solenoid valve that prevents reverse flow to the evaporator (3) during the stop state of compressor (2) and that is situated in the compressor (2) suction part; a by-pass line (7) that is located between the solenoid valve (6) and suction part of the compressor (2), that provides the refrigerant blocked during the stop state of the compressor (2) to flow towards the
- the solenoid valve (6) allows the cooling cycle to sustain by directing the flow towards the capillary tube during the operation period and diverts the flow towards the by-pass line (7) by blocking the flow that runs towards the capillary tube (5) during the compressor (2) stop state.
- solenoid valve (6) When the compressor (2) is in operation mode, in order to sustain cooling cycle, capillary tube outlet of solenoid valve (6) opens up and by-pass line (7) outlet is blocked. If the solenoid valve (16) opens synchronously as the compressor (2) operates right at the operation period, pressure at the compressor (2) suction part decreases partially until a limit torque value which would achieve the compression function after the initial startup, is reached and during the stop state although the pressure is brought to equilibrium, a pressure difference occurs between the two parts of the compressor (2); this pressure difference generates a high current during the initial start-up of the compressor (2).
- the cooling circuit (9) includes a solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of the compressor (2) and that is situated between the condenser (4) and capillary tube (5); a solenoid valve (16) that prevents reverse flow to the evaporator (3) in the compressor (2) stop state and that is installed at the suction part of the compressor (2); a by-pass line (17) that equilibrates the pressure when solenoid valve (6) is blocked in order to prevent migration of refrigerant and that is equipped between the suction and pumping parts of the compressor (2); a solenoid valve (116) that is designed on the bypass line (17); and a control mechanism (8) that controls the operation of solenoid valves (6, 16, 116) and compressor (2) ( Figure 3).
- a solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of the compressor (2) and that is situated between the condenser (4) and capillary tube (5)
- solenoid valve (116) located on the by-pass line (17) opens up and allows for a flow in the direction that is opposite to the pumping direction; thus, pressure is equilibrated.
- Solenoid valve (16) located at the suction part of the compressor (2) prevents reverse flow to the evaporator (3) by closing.
- Opening of solenoid valve (16) can be delayed by the control unit (8) for a period that is from the initial start-up of the compressor (2) until the attainment of limit torque rate. Therefore, equilibrated pressure rates reserved during the stop state of the compressor (2) are preserved by the by-pass line (17) until the attainment of limit torque rate and compressor (2) realizes its pressing function and compressor's (2) drawing of high current rates is prevented.
- Cooling device (1) and the control method being the subject of invention migration of refrigerant that occurs during the stop state of the compressor (2) from the condenser (4) towards the evaporator (3) and that causes yield loss, is prevented; provided that the migration of refrigerant is prevented, pressure between the suction and pumping parts of the compressor (2) are equilibrated, easier start-up of the compressor (2) is achieved and during the initial start-up until the attainment of limit torque rate, drawing of high current rates by the compressor (2) is prevented.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Sampling And Sample Adjustment (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR200400382 | 2004-03-01 | ||
PCT/IB2005/050721 WO2005088212A1 (en) | 2004-03-01 | 2005-02-28 | A cooling device and control method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1738119A1 true EP1738119A1 (en) | 2007-01-03 |
EP1738119B1 EP1738119B1 (en) | 2010-03-31 |
Family
ID=34960863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05708866A Not-in-force EP1738119B1 (en) | 2004-03-01 | 2005-02-28 | A cooling device and control method |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1738119B1 (en) |
AT (1) | ATE462942T1 (en) |
DE (1) | DE602005020264D1 (en) |
RU (1) | RU2347985C2 (en) |
TR (1) | TR200604629T1 (en) |
WO (1) | WO2005088212A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2662647A3 (en) * | 2012-05-11 | 2017-07-12 | Liebherr-Hausgeräte Ochsenhausen GmbH | Refrigeration and/or freezer device |
EP3211351A1 (en) * | 2016-02-26 | 2017-08-30 | Lg Electronics Inc. | High pressure compressor and refrigerating machine having the same |
US10309700B2 (en) | 2016-02-26 | 2019-06-04 | Lg Electronics Inc. | High pressure compressor and refrigerating machine having a high pressure compressor |
US10731647B2 (en) | 2016-02-26 | 2020-08-04 | Lg Electronics Inc. | High pressure compressor and refrigerating machine having a high pressure compressor |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10006681B2 (en) * | 2005-06-06 | 2018-06-26 | Carrier Corporation | Pulse width modulation with discharge to suction bypass |
US20070235161A1 (en) * | 2006-03-27 | 2007-10-11 | Eric Barger | Refrigerant based heat exchange system with compensating heat pipe technology |
WO2010010414A1 (en) * | 2008-07-23 | 2010-01-28 | Carrier Corporation | Methods and systems for compressor operation |
EP2357431A1 (en) * | 2010-02-01 | 2011-08-17 | Javier Cano Cavanillas | Variable capacity refrigeration system |
EP2764304A1 (en) * | 2011-10-03 | 2014-08-13 | Electrolux Home Products Corporation N.V. | Refrigerator and method of operating refrigeration system |
DE102012005878B4 (en) | 2012-02-29 | 2022-08-04 | Liebherr-Hausgeräte Lienz Gmbh | refrigerator and/or freezer |
EP2896855B1 (en) * | 2012-09-16 | 2017-11-08 | Hefei Meiling Co., Ltd | Electric valve and refrigeration system comprising same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR8901186A (en) * | 1989-03-09 | 1990-10-16 | Brasil Compressores Sa | MIGRATION BLOCKING VALVE IN COOLING SYSTEM |
JPH0828969A (en) * | 1994-07-15 | 1996-02-02 | Sanyo Electric Co Ltd | Cooling system |
JP2001263832A (en) * | 2000-03-24 | 2001-09-26 | Mitsubishi Electric Corp | Refrigerating cycle of refrigerator |
US6711906B2 (en) * | 2001-04-20 | 2004-03-30 | Hankison International | Variable evaporator control for a gas dryer |
-
2005
- 2005-02-28 TR TR2006/04629T patent/TR200604629T1/en unknown
- 2005-02-28 AT AT05708866T patent/ATE462942T1/en not_active IP Right Cessation
- 2005-02-28 DE DE602005020264T patent/DE602005020264D1/en active Active
- 2005-02-28 WO PCT/IB2005/050721 patent/WO2005088212A1/en active Application Filing
- 2005-02-28 EP EP05708866A patent/EP1738119B1/en not_active Not-in-force
- 2005-02-28 RU RU2006134640/06A patent/RU2347985C2/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2005088212A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2662647A3 (en) * | 2012-05-11 | 2017-07-12 | Liebherr-Hausgeräte Ochsenhausen GmbH | Refrigeration and/or freezer device |
EP3211351A1 (en) * | 2016-02-26 | 2017-08-30 | Lg Electronics Inc. | High pressure compressor and refrigerating machine having the same |
US10309700B2 (en) | 2016-02-26 | 2019-06-04 | Lg Electronics Inc. | High pressure compressor and refrigerating machine having a high pressure compressor |
US10731647B2 (en) | 2016-02-26 | 2020-08-04 | Lg Electronics Inc. | High pressure compressor and refrigerating machine having a high pressure compressor |
Also Published As
Publication number | Publication date |
---|---|
WO2005088212A1 (en) | 2005-09-22 |
ATE462942T1 (en) | 2010-04-15 |
EP1738119B1 (en) | 2010-03-31 |
TR200604629T1 (en) | 2007-01-22 |
DE602005020264D1 (en) | 2010-05-12 |
RU2006134640A (en) | 2008-04-10 |
RU2347985C2 (en) | 2009-02-27 |
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