WO2018036510A1 - 控制阀及空调系统 - Google Patents

控制阀及空调系统 Download PDF

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Publication number
WO2018036510A1
WO2018036510A1 PCT/CN2017/098622 CN2017098622W WO2018036510A1 WO 2018036510 A1 WO2018036510 A1 WO 2018036510A1 CN 2017098622 W CN2017098622 W CN 2017098622W WO 2018036510 A1 WO2018036510 A1 WO 2018036510A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
control valve
sleeved
sleeve
valve seat
Prior art date
Application number
PCT/CN2017/098622
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
唐韩维
魏先让
丁帅锋
Original Assignee
浙江三花智能控制股份有限公司
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 浙江三花智能控制股份有限公司 filed Critical 浙江三花智能控制股份有限公司
Priority to KR1020197007762A priority Critical patent/KR102191466B1/ko
Priority to JP2019511546A priority patent/JP6774563B2/ja
Publication of WO2018036510A1 publication Critical patent/WO2018036510A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to the field of valves, and in particular to a control valve and an air conditioning system.
  • the electric three-way valve is mainly used in the air conditioning system, and is composed of a valve body and a coil, wherein the valve body has three valve ports.
  • the working principle is: under the action of the current pulse, the electromagnetic driving force of the coil to the circumferential direction of the magnetic rotor component in the valve body enables the magnetic rotor component to rotate in a clockwise or counterclockwise direction.
  • the valve body is transmitted by gears to transmit the driving force to the slider, so that the opening and closing of the two valve ports on the valve seat can be realized, and the refrigerant flow path of the air conditioning system can be switched.
  • an electric three-way valve is disclosed in Chinese Patent Application Publication No. CN103375606A. As shown in FIGS. 1 and 2, the above-described electric three-way valve also drives the rotor member to rotate after being excited by the coil.
  • the drive gear 41' is press-fitted into the lower end portion of the rotor shaft 2' of the rotor member to have an integral structure, and the rotor shaft 2' rotates in synchronization with the drive gear 41' to drive the reduction gear.
  • the drive gear 41' and the reduction gear 90' constitute a first stage gear pair, and the reduction gear 90' is a step gear including a large diameter gear coaxially disposed and a small diameter gear.
  • the large-diameter gear meshes with the driving gear 41', the small-diameter gear meshes with the driving gear 50', and the driving gear 50' rotates, and the executing gear 50' drives the slider 20' to rotate through the driving pin, thereby blocking the slider 20'.
  • One of the two switching valve ports switches the flow direction of the refrigerant.
  • the gear transmission has high requirements on the center distance and parallelism between the two gears.
  • the electric three-way valve described above employs a configuration in which the magnetic rotor member is different from the actuator gear 50'.
  • the magnetic rotor member has a rotor shaft, and the lower end of the rotor shaft is welded to the drive gear 41'.
  • the center position of the drive gear 41' is ensured by the two sleeves, the upper end cover 4' and the lower end cover 5'.
  • the center position of the actuator gear 50' is ensured by the valve seat 10'.
  • the coaxiality of the drive gear and the execution gear is ensured by the valve seat, the large sleeve, the small sleeve, the upper end cover, the lower end cover and the rotor shaft, and the coaxiality is assembled by the small sleeve, the end cover and the large sleeve. Since the influence of the precision is large, the coaxiality is difficult to ensure, and the valve opening failure due to the poor coaxiality is likely to occur, and the assembly process is difficult and difficult, and the processing precision of the components is also high.
  • the present invention aims to provide a control valve and an air conditioning system to solve the problem that the coaxiality of the drive gear and the execution gear in the prior art is difficult to ensure.
  • a control valve includes: a valve seat having a normally open valve port and a plurality of switching valve ports; and a sleeve assembly sleeved on the valve seat a slider rotatably disposed on the valve seat, the slider is used to control opening and closing switching of the plurality of switching valve ports; the central shaft, the central shaft is disposed between the valve seat and the sleeve assembly, and the bottom end of the central shaft is fixed On the valve seat, the slider is rotatably sleeved on the central shaft; the rotor component is sleeved on the central shaft, the rotor component includes a driving gear; the gear is arranged, the sleeve is sleeved on the central shaft, and the slider is driven to rotate; The gear is disposed between the drive gear and the execution gear and meshes with both the drive gear and the execution gear.
  • the sleeve assembly includes a first sleeve and a second sleeve that are interconnected, the first sleeve is sleeved on the valve seat, and the magnet portion of the rotor component is received within the second sleeve.
  • the top of the second sleeve has a positioning hole, and the top end of the central shaft is received in the positioning hole.
  • the slider is provided with a first mounting hole, the slider is sleeved on the central shaft through the first mounting hole, the driving gear is provided with a second mounting hole, and the driving gear is sleeved on the central shaft through the second mounting hole
  • the execution gear is provided with a third mounting hole, and the execution gear is sleeved on the central shaft through the third mounting hole.
  • the rotor component further includes a rod body portion and a magnet portion sleeved outside the rod body portion, the driving gear is disposed at a bottom portion of the rod body portion, and the rod body portion is provided with a fourth mounting hole, and the rod body portion is sleeved at the center through the fourth mounting hole On the shaft.
  • the rod body portion and the driving gear are injection molded parts that are connected to the magnet portion by injection molding, or the driving gear is a metal piece, and the rod body portion is an injection molded piece that is injection-molded to connect the magnet portion and the driving gear.
  • the upper portion of the rotor member is further provided with an elastic member that applies a downward elastic force to the rotor member.
  • an upper portion of the rotor member is provided with a receiving hole for accommodating the elastic member, and a first sleeve is disposed between the hole wall of the receiving hole and the central shaft, and the two ends of the elastic member respectively abut the end portion of the first sleeve and The end wall of the receiving hole.
  • a second sleeve is disposed between the drive gear and the execution gear.
  • the transmission gear is mounted on the valve seat through the gear shaft.
  • control valve further includes a lining plate disposed in the sleeve assembly, the lining plate having a escaping hole for avoiding the driving gear, and the top end of the gear shaft is coupled to the lining plate.
  • an air conditioning system comprising a control valve, the control valve being the control valve described above.
  • the control valve comprises a valve seat, a sleeve assembly, a slider, a central shaft, a rotor component, an execution gear and a transmission gear.
  • the valve seat is provided with a normally open valve port and a plurality of switching valve ports
  • the sleeve assembly is sleeved on the valve seat.
  • the slider is rotatably disposed on the valve seat for controlling opening and closing switching of the plurality of switching valve ports.
  • the central shaft is disposed between the valve seat and the sleeve assembly, and the bottom end is fixed to the valve seat.
  • the center shaft is sequentially provided with a slider, an execution gear, and a rotor member with a drive gear from the bottom to the top.
  • the driving gear on the rotor component transmits the rotating power of the rotor component to the executing gear through the transmission gear, and performs the rotation of the gear driving slider to realize the opening and closing switching of the switching valve port on the valve seat end plane.
  • the driving gear rotates under the driving of the rotor component, and the driving gear that meshes with the driving gear rotates, and the transmission gear drives the gear that rotates with the engagement gear to realize the opening and closing of the switching valve port on the plane of the valve seat end.
  • the lower end of the center shaft is fixed at the center of the valve seat, and the driving gear and the executing gear are put together, so that the coaxiality between the driving gear and the executing gear is ensured.
  • the process is simplified and the production cost of the control valve is reduced.
  • Figure 1 is a cross-sectional view showing a prior art electric three-way valve
  • Figure 2 is a schematic view showing the structure of the rotor component of the electric three-way valve of Figure 1;
  • Figure 3 shows a schematic cross-sectional view of an embodiment of a control valve in accordance with the present invention
  • Figure 4 is a cross-sectional view showing a partial structure of the control valve of Figure 3;
  • Figure 5 shows a schematic cross-sectional view of the rotor component of the control valve of Figure 3.
  • FIG. 3 shows a schematic cross-sectional view of an embodiment of a control valve in accordance with the present invention.
  • the control valve of this embodiment includes a valve seat 10, a bushing assembly, a slider 20, a center shaft 30, a rotor member 40, an actuator gear 50, and a transmission gear.
  • the valve seat 10 is provided with a normally open valve port and a plurality of switching valve ports, and the sleeve assembly is sleeved on the valve seat 10.
  • the slider 20 is rotatably disposed on the valve seat 10 for controlling opening and closing switching of the plurality of switching valve ports.
  • the center shaft 30 is disposed between the valve seat 10 and the sleeve assembly, and the bottom end thereof is fixed to the valve seat 10.
  • the center shaft 30 has a slider 20, an execution gear 50, and a rotor member 40 with a drive gear 41 in this order from bottom to top.
  • the driving gear 41 on the rotor member 40 transmits the rotational power of the rotor member 40 to the execution gear 50 through the transmission gear, and the gear 50 drives the slider 20 to rotate, so that the slider 20 switches the valve opening on the valve seat end plane. Close the switch.
  • the number of switching valve ports is two.
  • the driving gear 41 rotates under the driving of the rotor component 40, and the driving gear that meshes with the driving gear rotates, and the transmission gear drives the rotation of the executing gear 50 that meshes with the transmission gear to realize the slider 20 to the valve.
  • the opening and closing of the switching valve port on the seat end plane is switched.
  • the lower end of the center shaft 30 is fixed at the center of the valve seat 10, and the drive gear 41 is disposed with the execution gear 50. That is, the drive gear 41 and the gear shaft of the execution gear 50 are the center shaft 30, and the drive gear 41 and the execution gear 50 are secured. Coaxiality. At the same time, the process is simplified and the production cost of the control valve is reduced.
  • the rotor and the rotor shaft are positioned by the upper and lower end caps, and rotate together, the friction sound between the rotor shaft and the end cover is large during the rotation, and the positioning length of the end cover and the shaft is short, and the long-term running shaft and the hole are The wear is large.
  • the center shaft 30 does not rotate, the mating length of the rotor center hole and the center shaft 30 is long, and the long-term running shaft and the hole wear are small, so the product life is longer.
  • the central shaft 30 is made of a metal material.
  • the rotor member 40 is injection molded using a polymer material such as self-lubricating anti-wear nylon or PPS. When the plastic center hole of the rotor member 40 rotates in cooperation with the center shaft 30, the friction is small, so that the control valve has higher reliability and lower operating noise.
  • the gear shaft of the gear 50 is the same shaft as the rotor member, the lower end cover of the prior art is eliminated, the parts are fewer, and the process is simplified. Therefore, the control valve of the embodiment The cost is lower.
  • Figure 4 is a cross-sectional view showing a partial structure of the control valve of Figure 3.
  • the sleeve assembly includes a first sleeve 61 and a second sleeve 62 that are connected to each other, and the first sleeve 61 is sleeved on the valve seat 10, and the rotor member 40
  • the magnet portion 43 is housed in the second sleeve 62.
  • the top of the second sleeve 62 has a positioning hole, and the top end of the center shaft 30 is accommodated in the positioning hole.
  • the positioning holes make the positioning of the upper end of the center shaft 30 more reliable, and the positioning of the two ends of the center shaft 30 is more reliable.
  • the positioning hole is a concave blind hole.
  • the slider 20 is provided with a first mounting hole, the slider 20 is sleeved on the central shaft 30 through the first mounting hole, the driving gear 41 is provided with a second mounting hole, and the driving gear 41 is passed through the second
  • the mounting hole is sleeved on the central shaft 30, the execution gear 50 is provided with a third mounting hole, and the actuator gear 50 is sleeved on the central shaft 30 through the third mounting hole.
  • the slider 20, the actuator gear 50, and the drive gear 41 are sleeved on the center shaft 30 through the first to third mounting holes, respectively.
  • the above cooperation method is simple and easy to implement. At the same time, the above structure ensures the coaxiality of the actuator gear 50 and the drive gear 41.
  • Figure 5 shows a schematic cross-sectional view of the rotor component of the control valve of Figure 3.
  • the rotor member 40 further includes a rod portion 42 and a magnet portion 43 that is sleeved outside the rod portion 42.
  • the drive gear 41 is disposed at the bottom of the rod portion 42, and the rod portion 42 is provided with The fourth mounting hole, the rod body portion 42 is sleeved on the central shaft 30 through the fourth mounting hole.
  • the above structure makes the rotor member 40 easy to shape, compact, and capable of ensuring strength.
  • the coil of the control valve is applied to the electromagnetic driving force in the circumferential direction of the magnet portion 43 by the action of the current pulse.
  • the magnet portion 43 drives the drive gear 41 to rotate together, thereby transmitting power through the drive gear 41.
  • the rod portion 42 and the drive gear 41 are injection molded parts that are attached to the magnet portion 43 by injection molding.
  • the drive gear 41 may be a polymer material such as nylon or PPS.
  • the drive gear is a metal piece, and the rod body portion is an injection molded piece that is injection-molded to connect the magnet portion and the drive gear.
  • the upper portion of the rotor member 40 is further provided with an elastic member which applies a downward elastic force to the rotor member 40.
  • the rotor member 40 abuts downward under the elastic force of the elastic member.
  • the above elastic member can ensure that the rotor member 40 does not move upward.
  • the elastic member is a spring.
  • the upper portion of the rotor member 40 is provided with a receiving hole for accommodating the elastic member
  • the first sleeve 71 is disposed between the hole wall of the receiving hole and the central shaft 30, and both ends of the elastic member are provided. Abutting on the end of the first sleeve 71 and the end wall of the receiving hole, respectively.
  • the receiving hole can be used to place the first sleeve 71 and the elastic member.
  • the upper end surface of the first sleeve 71 abuts against the inner end wall of the second sleeve 62, and the lower end surface abuts against the upper end of the elastic member.
  • the first sleeve 71 can compress the elastic member to a fixed size such that the lower end surface of the rotor member 40 remains in contact with the second sleeve 72 under the action of the elastic force.
  • the slider 20 can also be brought into contact with the sealing surface of the valve seat 10 by the elastic force.
  • a second boss 72 is provided between the drive gear 41 and the actuator gear 50.
  • the second sleeve 72 described above is used to separate the drive gear 41 and the execution gear 50 to prevent mutual interference therebetween.
  • the second sleeve 72 can fix the drive gear 41 at a certain height so that the drive gear 41 just engages with the transmission gear without interfering with other gears.
  • the transmission gear is mounted on the valve seat 10 through the gear shaft.
  • Transmission gear package Includes one or more reduction gears for deceleration.
  • the transmission gear includes two reduction gears, and both of the reduction gears are stepped gears, and the stepped gear includes a large diameter gear and a small diameter gear coaxially disposed.
  • the large diameter gear of the first reduction gear meshes with the drive gear 41
  • the small diameter gear meshes with the large diameter gear of the second reduction gear
  • the small diameter gear of the second reduction gear meshes with the execution gear 50 to drive the execution gear
  • the execution gear 50 drives the slider 20 to rotate by the driving pin, so that the slider 20 blocks one of the two switching valve ports, thereby switching the flow direction of the refrigerant.
  • the two reduction gears are different from the actuator gear 50 and the drive gear 41, and are respectively mounted on the valve seat 10 via the gear shaft.
  • the wheelbase between the central shaft 30 and all the gear shafts is positioned through the positioning holes on the valve seat 10.
  • the positioning holes are processed on the same plane, and the positional accuracy is high, and the wheelbase and the parallelism of the shaft can be ensured, so that the product has good processability.
  • the control valve further includes a lining plate 80 disposed in the ferrule assembly.
  • the lining plate 80 has a escaping hole for escaping the drive gear 41, and the top end of the gear shaft is coupled to the lining plate 80.
  • the lining plate 80 is used to position the top end of the gear shaft to prevent the gear shaft from deflecting during the transmission process.
  • the liner 80 is preferably attached to the valve seat 10 by a connecting post.
  • the present application also provides an air conditioning system, an embodiment of which includes a control valve, which is the control valve described above.
  • the control valve ensures the coaxiality of the drive gear and the execution gear, and simplifies the process and reduces the production cost of the control valve. This further reduces the production cost of the air conditioning system.
  • the driving gear of the control valve of the present application rotates under the driving of the rotor component, and drives the transmission gear that meshes with it to rotate, and the transmission gear drives the gear to rotate with the engagement gear, so that the slider can be switched on the valve seat end plane.
  • the opening and closing of the mouth has been switched.
  • the lower end of the center shaft is fixed at the center of the valve seat, and the driving gear and the executing gear are put together, so that the coaxiality between the driving gear and the executing gear is ensured.
  • the process is simplified and the production cost of the control valve is reduced.
  • the control valve of the present application has the advantages of good product processability, lower cost, higher reliability, lower valve body noise and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Multiple-Way Valves (AREA)
PCT/CN2017/098622 2016-08-24 2017-08-23 控制阀及空调系统 WO2018036510A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020197007762A KR102191466B1 (ko) 2016-08-24 2017-08-23 제어 밸브 및 공기 조화 시스템
JP2019511546A JP6774563B2 (ja) 2016-08-24 2017-08-23 制御弁及び空調システム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610724284.8A CN107781498B (zh) 2016-08-24 2016-08-24 控制阀
CN201610724284.8 2016-08-24

Publications (1)

Publication Number Publication Date
WO2018036510A1 true WO2018036510A1 (zh) 2018-03-01

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PCT/CN2017/098622 WO2018036510A1 (zh) 2016-08-24 2017-08-23 控制阀及空调系统

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JP (1) JP6774563B2 (ja)
KR (1) KR102191466B1 (ja)
CN (1) CN107781498B (ja)
WO (1) WO2018036510A1 (ja)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112576801B (zh) * 2019-09-30 2024-04-05 浙江三花智能控制股份有限公司 一种电动阀
CN114719054B (zh) * 2022-04-29 2023-07-21 浙江三花智能控制股份有限公司 一种多通阀装置

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JP2010084939A (ja) * 2008-09-08 2010-04-15 Fuji Koki Corp 四方切換弁
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CN204784855U (zh) * 2015-06-29 2015-11-18 上海康源电气有限公司 带减速装置的电动切换阀及使用该电动切换阀的冰箱系统

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JP5606511B2 (ja) * 2011-11-25 2014-10-15 浙江三花股▲分▼有限公司 電動切換弁
JP6087085B2 (ja) * 2012-08-31 2017-03-01 日立アプライアンス株式会社 冷媒切替弁およびこれを備える機器
CN105276229A (zh) * 2014-06-09 2016-01-27 浙江三花股份有限公司 电动切换阀
CN105422952A (zh) * 2014-09-17 2016-03-23 浙江三花股份有限公司 一种电动切换阀
CN104964066B (zh) * 2015-06-29 2017-07-07 上海康源电气有限公司 带减速装置的电动切换阀及使用该电动切换阀的冰箱系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346227A (ja) * 1999-06-09 2000-12-15 Pacific Ind Co Ltd 電動膨張弁
CN1952453A (zh) * 2005-10-18 2007-04-25 浙江三花制冷集团有限公司 电磁滑动阀
JP2010084939A (ja) * 2008-09-08 2010-04-15 Fuji Koki Corp 四方切換弁
CN103133717A (zh) * 2011-11-25 2013-06-05 浙江三花股份有限公司 电动切换阀
CN204784855U (zh) * 2015-06-29 2015-11-18 上海康源电气有限公司 带减速装置的电动切换阀及使用该电动切换阀的冰箱系统

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Publication number Publication date
JP6774563B2 (ja) 2020-10-28
KR20190039289A (ko) 2019-04-10
KR102191466B1 (ko) 2020-12-16
JP2019532232A (ja) 2019-11-07
CN107781498A (zh) 2018-03-09
CN107781498B (zh) 2021-03-12

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