US20070227184A1 - Passage switching valve and refrigerator having the same - Google Patents

Passage switching valve and refrigerator having the same Download PDF

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Publication number
US20070227184A1
US20070227184A1 US11/482,048 US48204806A US2007227184A1 US 20070227184 A1 US20070227184 A1 US 20070227184A1 US 48204806 A US48204806 A US 48204806A US 2007227184 A1 US2007227184 A1 US 2007227184A1
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US
United States
Prior art keywords
outlet ports
opening
switching valve
passage switching
closing member
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.)
Abandoned
Application number
US11/482,048
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English (en)
Inventor
Seok Jun Son
Song Yik Lee
Seong Ki Jeong
Dae Seong Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
PK Tech System Co Ltd
Original Assignee
Samsung Electronics Co Ltd
PK Tech System Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd, PK Tech System Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEONG, SEONG KI, KIM, DAE SEONG, LEE, SONG YIK, SON, SEOK JUN
Assigned to SAMSUNG ELECTRONICS CO., LTD., P.K. TECH SYSTEM CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. RECORD TO CORRECT THE NAME AND ADDRESS OF THE SECOND ASSIGNEE ON THE ASSIGNMENT PREVIOUSLY RECORDED AT REEL 018216 FRAME 0393. Assignors: JEONG, SEONG KI, KIM, DAE SEONG, LEE, SONG YIK, SON, SEOK JUN
Publication of US20070227184A1 publication Critical patent/US20070227184A1/en
Abandoned legal-status Critical Current

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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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • 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
    • F25B2600/2511—Evaporator distribution valves

Definitions

  • the present invention relates to a passage switching valve and a refrigerator employing the same, and more particularly, to a passage switching valve for uniformly distributing a fluid to a plurality of outlet ports and a refrigerator employing the same.
  • a passage switching valve is commonly used for changing or opening and closing a refrigerant passage in a refrigerator or an air conditioner.
  • the passage switching valve may be used when refrigerant is selectively supplied to any one of evaporators or is supplied to all evaporators in a refrigerator including a plurality of the evaporators.
  • a passage switching valve employed in a refrigerator is disclosed in Korean Patent Publication No. 2004-4063 (published on Jan. 13, 2004).
  • the passage switching valve includes a sealed case and a valve seat plate coupled with the lower side of the sealed case.
  • the valve seat plate includes an inlet port, through which a refrigerant is introduced, formed in one side thereof and first and second outlet ports, through which the refrigerant is discharged, formed in the other side thereof.
  • Valve bodies are installed to be rotated by a step motor in the first and second outlet ports to open and close the outlet ports.
  • the passage switching valve opens any or all of the two outlet ports or closes all of the two outlet ports by the rotation of the valve body.
  • the refrigerant is not uniformly distributed to the outlet ports. This is because the height of the inlet port is similar to the height of the two outlet ports so that some of the liquid refrigerant is concentrated more to one side than the other while flowing from the inlet port to the outlet ports along the inner surface of the valve seat plate.
  • the first and second outlet ports are alternately opened and closed for a predetermined time period so that the mean flow rate of the refrigerant that flows to the first and second outlet ports are equal to each other.
  • the step motor since the step motor is to be continuously operated in order to alternately open and close the first and second outlet ports, energy loss is large and the lifespan of the step motor may be shortened.
  • the present invention has been made in view of the above-mentioned problems, and an aspect of the invention is to provide a passage switching valve for maintaining a plurality of outlet ports to be opened and for uniformly distributing a fluid to the outlet ports and a refrigerator employing the same.
  • the present invention provides a passage switching valve including a housing having an inlet port and a plurality of outlet ports, an opening and closing member for opening and closing the outlet port, and a driving device for operating the opening and closing member, wherein the outlet ports are provided in a lower position than the inlet port.
  • the housing includes a collecting portion formed by providing a recess in the valve plate to collect a fluid, and the outlet ports are formed in the collecting portion.
  • the opening and closing member comprises a closing part entering the collecting portion to closely contact and be spaced apart from the outlet ports according to the rotation
  • the driving device comprises a step motor for rotating the opening and closing member forwardly and reversely.
  • the opening and closing member has an approximate cone shape, and the closing part protruded from the outer surface of the opening and closing member to closely contact the inner surface of the collecting portion and having a length in the rotation direction longer than a distance between the outlet ports and a vertical width greater than a diameter of the outlet ports.
  • the outlet ports are formed at the same height and are arranged near to each other.
  • the inner wall of the housing is inclined such that the fluid flows down from the inlet port to the outlet ports.
  • the housing includes a casing having an opened lower side, and a valve plate for closing the opened lower side of the casing, wherein the inlet port and the outlet ports are formed in the valve plate.
  • the present invention provides a refrigerator including a plurality of compartments, a plurality of evaporators for refrigerating the respective compartments, and a passage switching valve for controlling the supply of a refrigerant to the evaporators.
  • the passage switching valve includes a housing having an inlet port and a plurality of outlet ports, an opening and closing member for opening and closing the outlet ports, and a driving device for operating the opening and closing member, wherein the outlet ports are disposed in a lower position than the inlet port.
  • FIG. 1 illustrates a refrigerating unit of a refrigerator employing a passage switching valve according to a preferred embodiment of the present invention
  • FIG. 2 is a sectional view illustrating a passage switching valve according to a first preferred embodiment of the present invention
  • FIG. 3 illustrates an inlet port and first and second outlet ports of the passage switching valve according to the first preferred embodiment of the present invention
  • FIGS. 4A to 4D are sectional views taken along the line IV-IV′ in FIG. 2 , which illustrate the opening and closing states of the first and second outlet ports;
  • FIG. 5 is a perspective view illustrating an opening and closing member of the passage switching valve according to the first preferred embodiment of the present invention
  • FIG. 6 is a sectional view illustrating a passage switching valve according to a second preferred embodiment of the present invention.
  • FIG. 7 is a perspective view illustrating an opening and closing member of the passage switching valve according to the second preferred embodiment of the present invention.
  • FIG. 8 is a sectional view illustrating a passage switching valve according to a third preferred embodiment of the present invention.
  • a refrigerator employing a passage switching valve includes a first compartment 1 and a second compartment 2 partitioned from each other, and a refrigerating unit for refrigerating the first and second compartments 1 and 2 .
  • the refrigerating unit includes a first evaporator 3 and a second evaporator 4 for refrigerating the first and second compartments 1 and 2 , respectively, a compressor 5 for compressing a refrigerant passing through the evaporators 3 and 4 , a condenser 6 for condensing the refrigerant passing through the compressor 5 , and a passage switching valve 20 for converting refrigerating passages such that the refrigerant passing through the condenser 6 is supplied to any one or all of the first and second evaporators 3 and 4 .
  • the refrigerating unit further includes a first capillary tube 9 installed in a first pipe 7 between the passage switching valve 20 and the first evaporator 3 and a second capillary tube 10 installed in a second pipe 8 between the passage switching valve 20 and the second evaporator 4 .
  • the refrigerating unit supplies the refrigerant to any one or all of the first and second evaporators 3 and 4 using the passage switching valve 20 so that any one or all of the compartments 1 and 2 may be refrigerated.
  • FIG. 2 illustrates the passage switching valve according to a first preferred embodiment of the present invention.
  • the passage switching valve 20 includes a cylindrical casing 21 having an opened lower side and a housing having a valve plate 22 coupled with the opened lower side of the casing 21 .
  • a sealed passage switching space 23 is formed in the housing.
  • the valve plate 22 has an inlet port 25 , formed in one side, through which the refrigerant is introduced into the passage switching space 23 , and first and second outlet ports 26 and 27 , formed in the other side, through which the refrigerant is discharged.
  • the first and second outlet ports 26 and 27 are respectively connected to first and second pipes 7 and 8 for guiding the refrigerant to the first and second evaporators 3 and 4 .
  • the passage switching valve 20 includes an opening and closing member 30 installed to rotate so that at least one of the first and second outlet ports 26 and 27 is opened or closed by the rotation of the opening and closing member 30 , a step motor 40 for rotating the opening and closing member 30 forward and reverse, and a driving gear 51 and a driven gear 52 installed in the passage switching space 23 to reduce the rotation speed of the step motor 40 and to transmit the rotation force of the step motor 40 to the opening and closing member 30 .
  • the step motor 40 includes a rotor 41 installed to rotate in the casing 21 and a coil assembly 42 installed outside the casing 21 .
  • An upper side of a shaft 43 for supporting the rotor 41 is supported, to rotate, by the casing 21 a and the lower side of the shaft 43 is supported, to rotate, by the valve plate 22 .
  • the step motor 40 rotates the rotor 41 to operate the opening and closing member 30 when electric power is applied to the coil assembly 42 by a refrigerator controller (not shown).
  • the driving gear 51 is coupled with the shaft 43 of the step motor 40 and the driven gear 52 is integrally formed with the opening and closing member 30 for opening and closing the first and second outlet ports 26 and 27 .
  • the opening and closing member 30 integrally formed with the driven gear is supported, to rotate, by a shaft 29 fixed to the valve plate 22 .
  • the driving gear 51 is smaller than the driven gear 52 . This is to reduce the rotation speed of the opening and closing member 30 .
  • a collecting portion 60 is formed by providing a recess in the valve plate 22 such that a refrigerant liquid in the passage switching space 23 is collected.
  • the first and second outlet ports 26 and 27 are formed in the collecting portion 60 . Furthermore, it is preferable that the first and second outlet ports 26 and 27 are disposed in a lower position than the inlet port 25 such that the refrigerant can easily flow from the inlet port 25 to the outlet ports 26 and 27 .
  • outlet ports 26 and 27 are positioned to receive refrigerant from the collecting portion 60 , which may be disposed in a position higher than the inlet port 25 , the outlet ports 26 and 27 also may be disposed in a position higher than the inlet port 25 .
  • the refrigerant liquid is collected in the collecting portion 60 and flows to the outlet ports 26 and 27 so that the refrigerant can be uniformly distributed into the outlet ports 26 and 27 .
  • the collecting portion 60 has a cone-shape such that the refrigerant is easily collected, and the opening and closing member 30 installed in the collecting portion 60 , as shown in FIG. 5 , has a cone-shape.
  • the cone-shaped outer circumference of the opening and closing member 30 is spaced apart from the inner wall of the collecting portion 60 and is provided with a closing part 32 closely contacting and being separated from the first and second outlet ports 26 and 27 to open and close the first and second outlet ports 26 and 27 according to the rotation of the opening and closing member 30 .
  • the closing part 32 protrudes from the outer surface of the opening and closing member 30 to closely contact the inner wall of the collecting portion 60 , and has a length in the rotation direction longer than the distance between the outlet ports 26 and 27 .
  • the closing part 32 has a vertical width greater than a diameter of the outlet ports 26 and 27 . This is for the closing part 32 to close at least one of the first and second outlet ports 26 and 27 or to open all of the first and second outlet ports 26 and 27 .
  • the shape of the collecting portion 60 may be formed with various shapes and sizes and furthermore may be disposed in a position higher than the inlet port. Additionally, the collecting portion 60 may not be formed in the valve plate 22 at all, and in this case, the valve plate 22 would have a flat surface and the outlet ports 26 and 27 would be formed on the flat surface of the valve plate 22 with the corresponding closing part 32 similar to the structure described above. And in this case, since the outlet ports are provided on the bottom portion of the passage switching space 23 , the refrigerant may be distributed uniformly.
  • the closing part 32 closes the first and second outlet ports 26 and 27 in the initial state to block the refrigerant flowing to the outlet ports 26 and 27
  • the opening and closing member 30 rotates such that the closing part 32 opens the first outlet port 26 and closes the second outlet port 27 to make the refrigerant flow only to the first outlet port 26
  • the opening and closing member 30 rotates such that the closing part 32 opens all of the first and second outlet ports 26 and 27 so that the refrigerant flows to the first and second outlet ports 26 and 27
  • the opening and closing member 30 rotates such that the closing part 32 closes the first outlet port 26 and opens the second outlet port 27 so that the refrigerant flows only to the second outlet port 27 .
  • the outlet ports 26 and 27 are positioned lower than the inlet port 25 , as shown in FIG. 4C , when all of the first and second outlet ports 26 and 27 are opened, the refrigerant liquid flowing along the inner wall of the valve plate 22 may be guided to the outlet ports 26 and 27 .
  • the refrigerant can be uniformly distributed into the outlet ports 26 and 27 while maintaining the step motor 40 in a stopped state when the outlet ports 26 and 27 are opened.
  • the refrigerant liquid is collected in the collecting portion 60 and flows to the outlet ports 26 and 27 again, the refrigerant can be distributed into the outlet ports 26 and 27 more uniformly.
  • the first and second outlet ports 26 and 27 are formed near to each other at the same height.
  • the passage switching valve 20 having two outlet ports may have three or more outlet ports to be employed in a collecting portion including three or more evaporators.
  • three or more outlet ports may be formed in the collecting portion to be opened and closed by the opening and closing member.
  • FIGS. 6 and 7 illustrate a passage switching valve according to a second preferred embodiment of the present invention.
  • a cylindrical collecting portion 600 is formed in the valve plate 22 , and a plurality of outlet ports 260 and 270 is at the bottom of the collecting portion 600 .
  • An opening and closing member 300 has a cylindrical shape, and in the lower side of the opening member 300 , as shown in FIG. 7 , in order to open and close the outlet ports 260 and 270 , a closing part 310 closely contacting the bottom of the collecting portion 600 and a spacer 320 spaced apart from the bottom of the collecting portion 600 are provided.
  • Other components are identical to those in the first preferred embodiment of the present invention.
  • the outlet ports 260 and 270 are lower than the inlet port 25 and the refrigerant liquid discharged through the outlet ports 260 and 270 is collected in the collecting portion 600 , the refrigerant can be uniformly distributed into the outlet ports 260 and 270 .
  • FIG. 8 illustrates a passage switching valve according to a third preferred embodiment of the present invention.
  • the inner wall 220 of the valve plate 22 is inclined at a predetermined angle ⁇ such that the refrigerant easily flows down from the inlet port 25 to the outlet ports 26 and 27 .
  • Other components are identical to those in the first preferred embodiment of the present invention.
  • the refrigerant liquid flowing from the inlet port 25 to the outlet ports 26 and 27 is easily collected into the collecting portion 60 , the refrigerant can be distributed more uniformly.
  • the passage switching valve since a plurality of outlet ports is positioned lower than the inlet port such that the refrigerant liquid flows to the outlet ports and is collected, the refrigerant is uniformly distributed into the outlet ports.
  • the collecting portion is provided at a place lower than the inlet port and the outlet ports are provided in the collecting portion so that the fluid in the passage switching valve is collected in the collecting portion and is distributed into the outlet ports again, the refrigerant is uniformly distributed into the outlet ports. Furthermore, since the collecting portion has a cone-shape, the fluid is guided to the outlet ports.
  • the motor can be controlled more simply than the conventional art so that the lifespan of the motor can be prolonged.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Multiple-Way Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
US11/482,048 2006-04-03 2006-07-07 Passage switching valve and refrigerator having the same Abandoned US20070227184A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060030165A KR20070099148A (ko) 2006-04-03 2006-04-03 유로전환밸브 및 이를 갖춘 냉장고
KR10-2006-0030165 2006-04-03

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US20070227184A1 true US20070227184A1 (en) 2007-10-04

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US11/482,048 Abandoned US20070227184A1 (en) 2006-04-03 2006-07-07 Passage switching valve and refrigerator having the same

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US (1) US20070227184A1 (ja)
JP (1) JP2007278683A (ja)
KR (1) KR20070099148A (ja)
CN (1) CN101050821A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120312034A1 (en) * 2011-06-08 2012-12-13 Oh Minkyu Refrigerating cycle apparatus and method for operating the same
US20130255309A1 (en) * 2012-04-02 2013-10-03 Whirlpool Corporation Energy efficiency of room air conditioner or unitary air conditioning system by using dual suction compressor
US9599353B2 (en) 2013-07-26 2017-03-21 Whirlpool Corporation Split air conditioning system with a single outdoor unit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101419322B1 (ko) * 2011-12-20 2014-07-16 위니아만도 주식회사 다방향 스텝밸브
CN103075540A (zh) * 2013-01-04 2013-05-01 宁波爱姆优东海精工电器有限公司 电动切换阀的冷气输出流量调节结构
CN103016812B (zh) * 2013-01-04 2015-03-04 宁波爱姆优东海精工电器有限公司 电动切换阀的防偏流量结构
CN105405408A (zh) * 2015-11-14 2016-03-16 合肥骇虫信息科技有限公司 一种lcd液晶显示器工作温度调节系统
WO2019123308A1 (en) * 2017-12-20 2019-06-27 Rbm Ibox S.R.L. Collector for distributing a heat transfer fluid in a heating and/or cooling and/or conditioning network, in particular of household and/or industrial type

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120312034A1 (en) * 2011-06-08 2012-12-13 Oh Minkyu Refrigerating cycle apparatus and method for operating the same
US8863533B2 (en) * 2011-06-08 2014-10-21 Lg Electronics Inc. Refrigerating cycle apparatus and method for operating the same
US9377231B2 (en) 2011-06-08 2016-06-28 Lg Electronics Inc. Refrigerating cycle apparatus and method for operating the same
US20130255309A1 (en) * 2012-04-02 2013-10-03 Whirlpool Corporation Energy efficiency of room air conditioner or unitary air conditioning system by using dual suction compressor
US9599353B2 (en) 2013-07-26 2017-03-21 Whirlpool Corporation Split air conditioning system with a single outdoor unit
US9970667B2 (en) 2013-07-26 2018-05-15 Whirlpool Corporation Air conditioning systems with multiple temperature zones from independent ducting systems and a single outdoor unit
US10180257B2 (en) 2013-07-26 2019-01-15 Whirlpool Corporation Air conditioning systems for at least two rooms using a single outdoor unit

Also Published As

Publication number Publication date
KR20070099148A (ko) 2007-10-09
CN101050821A (zh) 2007-10-10
JP2007278683A (ja) 2007-10-25

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AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SON, SEOK JUN;LEE, SONG YIK;JEONG, SEONG KI;AND OTHERS;REEL/FRAME:018216/0393

Effective date: 20060804

AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: RECORD TO CORRECT THE NAME AND ADDRESS OF THE SECOND ASSIGNEE ON THE ASSIGNMENT PREVIOUSLY RECORDED AT REEL 018216 FRAME 0393.;ASSIGNORS:SON, SEOK JUN;LEE, SONG YIK;JEONG, SEONG KI;AND OTHERS;REEL/FRAME:018468/0460

Effective date: 20060804

Owner name: P.K. TECH SYSTEM CO., LTD., KOREA, REPUBLIC OF

Free format text: RECORD TO CORRECT THE NAME AND ADDRESS OF THE SECOND ASSIGNEE ON THE ASSIGNMENT PREVIOUSLY RECORDED AT REEL 018216 FRAME 0393.;ASSIGNORS:SON, SEOK JUN;LEE, SONG YIK;JEONG, SEONG KI;AND OTHERS;REEL/FRAME:018468/0460

Effective date: 20060804

STCB Information on status: application discontinuation

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