WO2021103752A1 - 降噪套以及电子膨胀阀 - Google Patents
降噪套以及电子膨胀阀 Download PDFInfo
- Publication number
- WO2021103752A1 WO2021103752A1 PCT/CN2020/115626 CN2020115626W WO2021103752A1 WO 2021103752 A1 WO2021103752 A1 WO 2021103752A1 CN 2020115626 W CN2020115626 W CN 2020115626W WO 2021103752 A1 WO2021103752 A1 WO 2021103752A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- noise reduction
- reduction sleeve
- electronic expansion
- expansion valve
- wall
- Prior art date
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Classifications
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- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion 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
- This application relates to the technical field of electronic expansion valves, and specifically to a noise reduction sleeve and an electronic expansion valve.
- an electronic expansion valve includes a housing, a valve needle assembly, an inlet pipe, and an outlet pipe.
- the housing is provided with a valve port, and the valve needle assembly is arranged corresponding to the valve port, and the inlet pipe and the outlet pipe are both arranged on the housing.
- the valve needle assembly is movably arranged in the housing, and the valve needle assembly controls the opening and closing of the valve port in the housing to control the communication between the inlet pipe and the outlet pipe.
- the present application provides a noise reduction sleeve and an electronic expansion valve to solve the problem of high noise in the electronic expansion valve in the related art.
- a noise reduction sleeve for use in an electronic expansion valve.
- the noise reduction sleeve has a cylindrical structure, the noise reduction sleeve has a flow cavity, and the side wall of the noise reduction sleeve is provided with a plurality of notches, Each notch is connected with the flow cavity, the notch extends along the axial direction of the noise reduction sleeve, and one end of the notch extends to the lower end surface of the noise reduction sleeve.
- the outer wall and/or the inner wall of the noise reduction sleeve are provided with a turbulence structure, and the turbulence structure is used for turbulent flow of the refrigerating medium.
- the spoiler structure includes a plurality of spoiler bosses, the plurality of spoiler bosses are arranged on the outer wall of the noise reduction sleeve, the spoiler bosses extend along the axis of the noise reduction sleeve, and the plurality of spoiler bosses extend along the noise reduction sleeve.
- the circumferential interval setting of the noise cover is not limited to, the plurality of spoiler bosses, the plurality of spoiler bosses are arranged on the outer wall of the noise reduction sleeve, the spoiler bosses extend along the axis of the noise reduction sleeve, and the plurality of spoiler bosses extend along the noise reduction sleeve.
- the gap includes a first section and a second section that are connected to each other, the first section is located above the second section, the inner wall of the first section is a curved surface, and the inner wall of the second section is a plane.
- a plurality of notches are arranged at intervals along the circumferential direction of the side wall of the noise reduction sleeve.
- an electronic expansion valve includes: a housing; a nut assembly arranged in the housing; a noise reduction sleeve, the noise reduction sleeve having a first end and a second end that are arranged oppositely , The first end of the noise reduction sleeve is connected with the nut assembly, and the noise reduction sleeve is the noise reduction sleeve provided above.
- the nut assembly includes a nut seat, a positioning structure is provided between the nut seat and the noise reduction sleeve, and the positioning structure is used for positioning the direction of the notch of the noise reduction sleeve.
- the bottom of the nut base is provided with a first mounting boss, the first mounting boss is arranged coaxially with the nut base, the first end of the noise reduction sleeve is sleeved on the first mounting boss, and the first mounting boss
- One of the outer wall and the inner wall of the noise reduction sleeve is provided with a positioning boss, the other of the outer wall of the first mounting boss and the inner wall of the noise reduction sleeve is provided with a positioning groove, and the positioning boss is formed by matching the positioning groove Positioning structure.
- the electronic expansion valve further includes a valve seat core, the valve seat core and the nut assembly are arranged in the housing at intervals, the top of the valve seat core is provided with a second mounting boss, and the second mounting boss is arranged coaxially with the valve seat core, The second end of the noise reduction sleeve is sleeved on the second mounting boss.
- a medium inlet is provided on the housing, and the included angle between the center line of the notch of the noise reduction sleeve close to the medium inlet and the axis of the medium inlet is 45°.
- the noise reduction sleeve has a cylindrical structure, and the noise reduction sleeve has a flow cavity. Specifically, a plurality of notches are provided on the side wall of the noise reduction sleeve, and each notch is in communication with the flow-sharing cavity.
- the flow-sharing cavity is used to equalize the flow of the refrigerating medium to prevent the refrigerating medium from directly impacting the components in the electronic expansion valve, which can reduce noise.
- the notch extends along the axial direction of the noise reduction sleeve, and one end of the notch extends to the lower end surface of the noise reduction sleeve, which facilitates processing of the noise reduction sleeve and facilitates assembly.
- Fig. 1 shows a schematic structural diagram of a noise reduction sleeve provided according to an embodiment of the present application
- Fig. 2 shows another schematic structural diagram of the noise reduction sleeve provided according to an embodiment of the present application
- Figure 3 shows a schematic structural diagram of an electronic expansion valve provided according to an embodiment of the present application
- Figure 4 shows a cross-sectional view at A-A in Figure 3;
- Fig. 5 shows another structural schematic diagram of an electronic expansion valve provided according to an embodiment of the present application.
- Fig. 6 shows a cross-sectional view at B-B in Fig. 5.
- an embodiment of the present application provides a noise reduction sleeve, which is used in an electronic expansion valve.
- the noise reduction sleeve has a cylindrical structure, and is preferably made of a non-metallic material through an injection molding process.
- the noise reduction sleeve has a cylindrical structure.
- the noise reduction sleeve has an equalizing cavity 10, and the equalizing cavity 10 can equalize the flow of the refrigerant.
- a plurality of notches 20 are provided on the side wall of the noise reduction sleeve, and each notch 20 is communicated with the equalizing cavity 10, and the cooling medium can enter the equalizing cavity 10 through the notches 20, and the equalizing cavity is used to The cooling medium is flow-sharing.
- the notch 20 extends along the axial direction of the noise reduction sleeve, and one end of the notch 20 extends to the lower end surface of the noise reduction sleeve.
- a plurality of notches 20 are provided on the side wall of the noise reduction sleeve, so that each notch 20 is in communication with the flow-sharing cavity 10.
- the refrigerating medium can change the flow pattern of the fluid through the drainage effect of the notch 20, and enter the equalizing cavity 10, and the equalizing cavity is used to equalize the refrigerating medium to prevent the refrigerating medium from directly impacting the components in the electronic expansion valve, thereby reducing noise The role of.
- the notch 20 is arranged to extend along the axial direction of the noise reduction sleeve, and one end of the notch 20 extends to the lower end surface of the noise reduction sleeve, which is convenient for processing and assembling the noise reduction sleeve.
- a spoiler structure 30 is provided on the outer wall of the noise reduction sleeve.
- the spoiler structure 30 is used to spoil the cooling medium and change the flow state of the cooling medium, which can further improve the noise reduction effect.
- the spoiler structure 30 includes a spoiler boss, a spoiler groove, and other structures with a spoiler effect.
- the turbulence structure 30 may be provided on the inner wall of the noise reduction sleeve, or the turbulence structure 30 may be provided on the inner and outer walls of the noise reduction sleeve at the same time.
- the spoiler structure 30 includes a plurality of spoiler bosses 31, and the plurality of spoiler bosses 31 are arranged on the outer wall of the noise reduction sleeve.
- the spoiler bosses 31 can be used to spoil the cooling medium. Further enhance the noise reduction effect.
- the spoiler boss 31 extends along the axial direction of the noise reduction sleeve, and a plurality of spoiler bosses 31 are arranged at intervals along the circumferential direction of the noise reduction sleeve.
- the two ends of the spoiler boss 31 respectively extend to the upper and lower end surfaces of the noise reduction sleeve.
- a spoiler boss 31 is provided between two adjacent gaps 20, and a spoiler boss 31 is provided above each gap 20.
- the spoiler boss 31 is located between two adjacent gaps 20. Both ends of the noise reduction sleeve extend to the upper and lower end surfaces of the noise reduction sleeve, and the two ends of the spoiler boss 31 located above the notch 20 respectively extend to the upper end surface of the noise reduction sleeve and the top end of the notch 20.
- the gap 20 includes a first section 21 and a second section 22 that are connected to each other, and the first section 21 is located above the second section 22.
- the inner wall of the first section 21 is a curved surface
- the inner wall of the second section 22 is a flat surface, which can facilitate the cooling medium to enter the flow-sharing cavity 10 from the gap 20 and further reduce noise.
- the inner wall of the first section 21 has a semicircular structure.
- a plurality of notches 20 are arranged circumferentially along the side wall of the noise reduction sleeve, and at least one notch 20 is provided corresponding to the medium inlet of the electronic expansion valve.
- four notches 20 are provided on the side wall of the noise reduction sleeve.
- the number of notches 20 can be set according to the circulation of the cooling medium. For example, three notches 20 or five notches 20 are provided on the side wall of the noise reduction sleeve.
- an embodiment of the present application provides an electronic expansion valve, which includes a housing 40, a nut assembly 50 and a noise reduction sleeve 60.
- the nut assembly 50 and the noise reduction sleeve 60 are both arranged in the housing 40.
- the noise reduction sleeve 60 has a first end and a second end which are arranged oppositely. The first end of the noise reduction sleeve 60 is connected to the nut assembly 50.
- the noise reduction sleeve 60 is the noise reduction sleeve provided above, so that the noise reduction sleeve can be used. 60 Reduce the noise of the electronic expansion valve.
- the nut assembly 50 includes a nut seat 51, and a positioning structure 70 is provided between the nut seat 51 and the noise reduction sleeve 60.
- the positioning structure 70 is used to position the direction of the notch 20 of the noise reduction sleeve 60 so that The notch 20 faces the preset direction to ensure the noise reduction effect.
- the positioning structure 70 includes a structure in which a positioning boss and a positioning groove cooperate and a structure in which a pin cooperates with a positioning hole, as long as it can play a role in positioning the orientation of the notch 20.
- the bottom of the nut base 51 is provided with a first mounting boss 511, the first mounting boss 511 is coaxially arranged with the nut base 51, and the first end of the noise reduction sleeve 60 is sleeved on the first Install on the boss 511, so that the noise reduction sleeve 60 can be fixed in the housing 40.
- one of the outer wall of the first mounting boss 511 and the inner wall of the noise reduction sleeve 60 is provided with a positioning boss 71, and the other of the outer wall of the first mounting boss 511 and the inner wall of the noise reduction sleeve 60 is provided with The positioning groove 72 and the positioning boss 71 cooperate with the positioning groove 72 to form a positioning structure 70.
- the inner wall of the noise reduction sleeve 60 is provided with a positioning boss 71
- the outer wall of the first mounting boss 511 is provided with a positioning groove 72
- the positioning boss 71 and the positioning groove 72 are both along the noise reduction
- the sleeve 60 extends in the axial direction.
- the cross-sectional shapes of the positioning boss 71 and the positioning groove 72 are both semi-circular, which facilitates the insertion of the positioning boss 71 into the positioning groove 72 to play a role of positioning and rotation prevention.
- a positioning boss 71 may be provided on the outer wall of the first mounting boss 511
- a positioning groove 72 may be provided on the inner wall of the noise reduction sleeve 60.
- the electronic expansion valve further includes a valve seat core 80, the valve seat core 80 and the nut assembly 50 are spaced apart in the housing 40, and the valve seat core 80 is provided with a valve port.
- the top of the valve seat core 80 is provided with a second mounting boss 81, the second mounting boss 81 is arranged coaxially with the valve seat core 80, and the second end of the noise reduction sleeve 60 is sleeved on the second mounting boss 81
- the noise reduction sleeve 60 can be used to guide the nut seat 51 and the valve seat core 80 to ensure the coaxiality of the nut seat 51 and the valve seat core 80 and improve the accuracy of the device.
- the noise reduction sleeve 60 and the valve seat core 80 are interference fit, and the noise reduction sleeve 60 and the nut seat 51 are transitional or interference fit.
- the housing 40 is provided with a medium inlet 41.
- the included angle a between the center line of the gap 20 of the noise reduction sleeve 60 near the medium inlet 41 and the axis of the medium inlet 41 is 45°, and the flow sharing effect is Better, this can ensure the noise reduction effect.
- the included angle a between the center line of the notch 20 of the noise reduction sleeve 60 near the medium inlet 41 and the axis of the medium inlet 41 can be 36° or 60°, and if there are 3 notches 20, then a It is 60°, and if the gap 20 has 5 orifices, a is 36°.
- the noise reduction sleeve 60 is made of resin injection molding, which has the advantages of easy processing and low cost.
- the drainage effect of the multiple arch-shaped notches 20 can be used to change the fluid flow pattern, which can reduce noise.
- one end of the notch 20 extends to the lower end surface of the noise reduction sleeve, which has the advantages of easy processing, easy assembly, and low cost.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Details Of Valves (AREA)
- Temperature-Responsive Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Description
Claims (10)
- 一种降噪套,用于电子膨胀阀,所述降噪套为筒形结构,所述降噪套具有均流腔(10),所述降噪套的侧壁上设置有多个缺口(20),每个所述缺口(20)均与所述均流腔(10)连通,所述缺口(20)沿所述降噪套的轴线方向延伸,所述缺口(20)的一端延伸至所述降噪套的下端面。
- 根据权利要求1所述的降噪套,所述降噪套的外壁和/或内壁上设置有扰流结构(30),所述扰流结构(30)用于对制冷介质进行扰流。
- 根据权利要求2所述的降噪套,所述扰流结构(30)包括多个扰流凸台(31),多个所述扰流凸台(31)设置在所述降噪套的外壁上,所述扰流凸台(31)沿所述降噪套的轴线方向延伸,多个所述扰流凸台(31)沿所述降噪套的周向间隔设置。
- 根据权利要求1所述的降噪套,所述缺口(20)包括相互连通的第一段(21)和第二段(22),所述第一段(21)位于所述第二段(22)的上方,所述第一段(21)的内壁为曲面,所述第二段(22)的内壁为平面。
- 根据权利要求1所述的降噪套,多个所述缺口(20)沿所述降噪套的侧壁周向间隔设置。
- 一种电子膨胀阀,所述电子膨胀阀包括:壳体(40);螺母组件(50),设置在所述壳体(40)内;降噪套(60),所述降噪套(60)具有相对设置的第一端和第二端,所述降噪套(60)的第一端与所述螺母组件(50)连接,所述降噪套(60)为权利要求1至5中任一项所述的降噪套。
- 根据权利要求6所述的电子膨胀阀,所述螺母组件(50)包括螺母座(51),所述螺母座(51)与所述降噪套(60)之间设置有定位结构(70),所述定位结构(70)用于对所述降噪套(60)的缺口(20)的朝向进行定位。
- 根据权利要求7所述的电子膨胀阀,所述螺母座(51)的底部设置有第一安装凸台(511),所述第一安装凸台(511)与所述螺母座(51)同轴设置,所述降噪套(60)的第一端套设在所述第一安装凸台(511)上,所述第一安装凸台(511)的外壁和所述降噪套(60)的内壁的其中一个上设置有定位凸台(71),所述第一安装凸台(511)的外壁和所述降噪套(60)的内壁的另一个上设置有定位凹槽(72),所述定位凸台(71)与所述定位凹槽(72)相配合形成所述定位结构(70)。
- 根据权利要求6所述的电子膨胀阀,所述电子膨胀阀还包括阀座芯(80),所述阀座芯(80)与所述螺母组件(50)间隔设置在所述壳体(40)内,所述阀座芯(80)的顶部设置有第二安装凸台(81),所述第二安装凸台(81)与所述阀座芯(80)同轴设置,所述降噪套(60)的第二端套设在所述第二安装凸台(81)上。
- 根据权利要求6所述的电子膨胀阀,所述壳体(40)上设置有介质进口(41),靠近所述介质进口(41)的所述降噪套(60)的缺口(20)的中心线与所述介质进口(41)的轴线之间的夹角为45°。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022528032A JP7479467B2 (ja) | 2019-11-27 | 2020-09-16 | ノイズ低減スリーブ及び電子膨張弁 |
KR1020227020371A KR20220100688A (ko) | 2019-11-27 | 2020-09-16 | 노이즈 저감 슬리브 및 전자 팽창 밸브 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911185386.7 | 2019-11-27 | ||
CN201911185386.7A CN112963614A (zh) | 2019-11-27 | 2019-11-27 | 降噪套以及电子膨胀阀 |
Publications (1)
Publication Number | Publication Date |
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WO2021103752A1 true WO2021103752A1 (zh) | 2021-06-03 |
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ID=76129951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2020/115626 WO2021103752A1 (zh) | 2019-11-27 | 2020-09-16 | 降噪套以及电子膨胀阀 |
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Country | Link |
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JP (1) | JP7479467B2 (zh) |
KR (1) | KR20220100688A (zh) |
CN (1) | CN112963614A (zh) |
WO (1) | WO2021103752A1 (zh) |
Citations (10)
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JPS63111376A (ja) * | 1986-10-27 | 1988-05-16 | Yamatake Honeywell Co Ltd | 低騒音弁 |
ES1025539U (es) * | 1993-07-23 | 1994-01-16 | Compa Ia Roca Radiadores S A | Manguito elastico para la amortiguacion del nivel sonoro en grifos mezcladores de pared. |
CN201687818U (zh) * | 2010-05-27 | 2010-12-29 | 孙云南 | 锁紧装置 |
CN103453699A (zh) * | 2012-05-29 | 2013-12-18 | 浙江三花股份有限公司 | 一种电子膨胀阀 |
CN106195280A (zh) * | 2016-07-07 | 2016-12-07 | 哈尔滨工程大学 | 一种带有预启结构的低噪声调节阀 |
CN106545660A (zh) * | 2015-09-23 | 2017-03-29 | 盾安环境技术有限公司 | 一种电子膨胀阀 |
CN107289138A (zh) * | 2016-04-11 | 2017-10-24 | 浙江盾安人工环境股份有限公司 | 电子膨胀阀 |
CN107435753A (zh) * | 2016-05-25 | 2017-12-05 | 浙江三花智能控制股份有限公司 | 电子膨胀阀及具有其的制冷设备 |
CN107917276A (zh) * | 2016-10-10 | 2018-04-17 | 盾安环境技术有限公司 | 电子膨胀阀 |
CN211175614U (zh) * | 2019-11-27 | 2020-08-04 | 浙江盾安禾田金属有限公司 | 降噪套以及电子膨胀阀 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2008298343A (ja) * | 2007-05-30 | 2008-12-11 | Daikin Ind Ltd | 冷媒分流器一体化構造の膨張弁及びこれを用いた冷凍装置 |
JP7080194B2 (ja) * | 2019-02-08 | 2022-06-03 | 株式会社鷺宮製作所 | 電動弁、および、それを備える冷凍サイクルシステム |
-
2019
- 2019-11-27 CN CN201911185386.7A patent/CN112963614A/zh active Pending
-
2020
- 2020-09-16 WO PCT/CN2020/115626 patent/WO2021103752A1/zh active Application Filing
- 2020-09-16 KR KR1020227020371A patent/KR20220100688A/ko not_active Application Discontinuation
- 2020-09-16 JP JP2022528032A patent/JP7479467B2/ja active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63111376A (ja) * | 1986-10-27 | 1988-05-16 | Yamatake Honeywell Co Ltd | 低騒音弁 |
ES1025539U (es) * | 1993-07-23 | 1994-01-16 | Compa Ia Roca Radiadores S A | Manguito elastico para la amortiguacion del nivel sonoro en grifos mezcladores de pared. |
CN201687818U (zh) * | 2010-05-27 | 2010-12-29 | 孙云南 | 锁紧装置 |
CN103453699A (zh) * | 2012-05-29 | 2013-12-18 | 浙江三花股份有限公司 | 一种电子膨胀阀 |
CN106545660A (zh) * | 2015-09-23 | 2017-03-29 | 盾安环境技术有限公司 | 一种电子膨胀阀 |
CN107289138A (zh) * | 2016-04-11 | 2017-10-24 | 浙江盾安人工环境股份有限公司 | 电子膨胀阀 |
CN107435753A (zh) * | 2016-05-25 | 2017-12-05 | 浙江三花智能控制股份有限公司 | 电子膨胀阀及具有其的制冷设备 |
CN106195280A (zh) * | 2016-07-07 | 2016-12-07 | 哈尔滨工程大学 | 一种带有预启结构的低噪声调节阀 |
CN107917276A (zh) * | 2016-10-10 | 2018-04-17 | 盾安环境技术有限公司 | 电子膨胀阀 |
CN211175614U (zh) * | 2019-11-27 | 2020-08-04 | 浙江盾安禾田金属有限公司 | 降噪套以及电子膨胀阀 |
Also Published As
Publication number | Publication date |
---|---|
JP2023503407A (ja) | 2023-01-30 |
CN112963614A (zh) | 2021-06-15 |
JP7479467B2 (ja) | 2024-05-08 |
KR20220100688A (ko) | 2022-07-15 |
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