CN1804440A - Two-way flowing thermostatic expansion valve - Google Patents
Two-way flowing thermostatic expansion valve Download PDFInfo
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- CN1804440A CN1804440A CN 200510048901 CN200510048901A CN1804440A CN 1804440 A CN1804440 A CN 1804440A CN 200510048901 CN200510048901 CN 200510048901 CN 200510048901 A CN200510048901 A CN 200510048901A CN 1804440 A CN1804440 A CN 1804440A
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- valve
- expansion valve
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- throttle orifice
- bidirectional flow
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Abstract
The invention relates to a bidirectional flow thermal expansion valve, which comprises a valve body and a power head. Wherein, the valve body has first and second interfaces and a valve outlet connecting the first and second interfaces inside the valve body; the valve core element which attains power from the regulation spring and the power head and supported by the transmission rod is arranged at the lower part of valve outlet. The invention is characterized in that: said valve core element has a throttle hole connecting the first and second interfaces inside which a movable element for switching the throttle hole is arranged, while the throttle hole can match the movable element to form the one-way throttle structure inside the thermal expansion valve, therefore, the thermal expansion valve can realize bidirectional flow. The invention has easy installment while it can reduce the hidden leakage caused by welding slits and reduce the producing cost of air conditioner.
Description
[technical field]
The present invention relates to a kind of thermal expansion valve arrangement that is used for the fluid medium throttling, a kind of specifically bidirectional flow heat expansion valve.
[background technique]
The existing heating power expansion valve that is used for air-conditioning system comprises valve body and power head part, offer first interface and second interface on the valve body, offer the valve port that is used to be communicated with first interface and second interface in the valve body, be provided with by Regulation spring with from power head part at the downside of valve port and obtain the valve hole part that the transmission bar of power supports.During work, refrigerant flows to second interface that links to each other with evaporator from first interface that links to each other with condensator outlet, power head part is experienced the degree of superheat of evaporator outlet end and is ordered about and transmit the bar axial action, promoting valve hole part moves near valve port, change valve port opening, with the control cold medium flux, reach the purpose of regulating the control temperature.
The heating power expansion valve of said structure, because the valve hole part that cooperates with valve port is an entity structure, only can make the refrigerant one-way flow, promptly flow to second interface from first interface, otherwise, when when second interface flows to first interface, valve hole part then can be closed valve port greater than the first interface pressure because of the second interface pressure, therefore, when reality is used, usually need reverse parallel connection install two such heating power expansion valves and join respectively with one-way valve, just can make air-conditioning system work in refrigeration or heating mode (seeing Fig. 1 for details): during refrigeration, the high temperature and high pressure gas refrigerant that compressor high-voltage end is discharged enters outdoor unit (being condenser this moment) through four-way change-over valve C1, lowers the temperature to outdoor medium release heat by outdoor unit, becomes the highly pressurised liquid refrigerant; The highly pressurised liquid refrigerant that flows out from outdoor unit divides two the road to flow to heating power expansion valve A1, A2, under the effect of refrigerant pressure, one-way valve B 1 closes, one-way valve B2 opens, the highly pressurised liquid refrigerant is machine in the inlet chamber (be vaporizer this moment) after heating power expansion valve A2 throttling step-down, heat by medium in the indoor set absorption chamber becomes the low-pressure gas refrigerant; The low-pressure gas refrigerant that flows out from indoor set is sucked by the compressor low voltage terminal and continues circulation through four-way change-over valve C1.When heating, the high temperature and high pressure gas refrigerant that compressor high-voltage end is discharged enters indoor set (being condenser this moment) through four-way change-over valve C1, lowers the temperature to indoor medium release heat by indoor set, becomes the highly pressurised liquid refrigerant; The highly pressurised liquid refrigerant that flows out from indoor set divides two the road to flow to heating power expansion valve A1, A2, under the effect of refrigerant pressure, one-way valve B2 closes, one-way valve B1 opens, the highly pressurised liquid refrigerant is machine outside the inlet chamber (be vaporizer this moment) after heating power expansion valve A1 throttling step-down, by the outer medium heat of outdoor unit absorption chamber, become the low-pressure gas refrigerant; The low-pressure gas refrigerant that flows out from outdoor unit is sucked by the compressor low voltage terminal and continues circulation through four-way change-over valve C 1.The cost height of this air-conditioning system is installed inconvenience, and weld seam quantity and potential leakage point are more.
[summary of the invention]
The technical assignment of the technical problem to be solved in the present invention and proposition is to overcome the existing technological deficiency of above-mentioned heating power expansion valve, a kind of bidirectional flow heat expansion valve is provided, to make things convenient for the installation of air-conditioning system, the potential leakage point that minimizing brings because of weld seam quantity more, and reduce the manufacture cost of air-conditioning system, improve the versatility of heating power expansion valve critical component simultaneously.For this reason, the present invention takes following technical proposals:
A kind of bidirectional flow heat expansion valve, comprise valve body and power head part, offer first interface and second interface on the valve body, offer the valve port that is communicated with first interface and second interface in the valve body, downside at valve port is provided with by Regulation spring and the valve hole part that obtains the relative support of transmission bar of power from power head part, it is characterized in that offering the throttle orifice that is communicated with first interface and second interface on the described valve hole part, be built-in with the movable part that this throttle orifice is remained on unimpeded or closed state at this throttle orifice.Described throttle orifice cooperates the one-way throttle structure that constitutes heating power expansion valve inside with movable part, be similar to an one-way throttle valve, the existence of this structure makes heating power expansion valve to two-way circulate: when refrigerant when first interface flows to second interface, movable part remains on closed state with throttle orifice, and valve hole part is identical with the working method of existing structure heating power expansion valve; When refrigerant when second interface flows to first interface, valve hole part is closed valve port greater than the first interface pressure because of the second interface pressure, but under the second interface pressure effect, can make movable part that throttle orifice is remained on unimpeded state; When being applied on the air-conditioning system, the convenient installation reduced the potential leakage point that brings because of weld seam quantity more, and reduces the manufacture cost of air-conditioning system.In addition, the present invention is arranged on aforementioned one-way throttle structure on the valve hole part, compact structure, and the heating power expansion valve of relative existing structure, its structural change is little, makes that most parts of heating power expansion valve can be general on making.
For making compact structure and increase the operating sensitivity of valve, and then guarantee that throttle efficiency, the present invention can also optionally take following additional (specifically) technical characteristics:
Described valve hole part is provided with the sealing surface that cooperates with described valve port.
Described orifice-built-in is equipped with described movable part and forms the diameter reducing part that one-way sealing cooperates.
Described movable part upper support has it is supported on maintenance spring on the diameter reducing part.
Described throttle orifice includes the vertical hole section corresponding with valve port, and described diameter reducing part is positioned at the bottom of this vertical hole section, and described movable part is positioned at the upside of diameter reducing part.
Described throttle orifice also includes the transverse holes section that is communicated with described vertical hole section.
Described movable part has the sphere corresponding with described diameter reducing part or the conical surface.
The central direction of described throttle orifice is provided with the limit structure that prevents that described movable part from escaping.
Be equipped with between described limit structure and the movable part described movable part is supported on maintenance spring on the diameter reducing part.
The present invention is by offering the throttle orifice that is communicated with first interface and second interface on valve hole part, obtain pressure and this throttle orifice is remained on the movable part of unimpeded or closed state from first interface or second interface in that throttle orifice is built-in, cooperate the one-way throttle structure that constitutes heating power expansion valve inside with movable part by throttle orifice, be similar to an one-way throttle valve, the existence of this structure makes heating power expansion valve to two-way circulate, when being applied on the air-conditioning system, the convenient installation, reduce the potential leakage point that brings because of weld seam quantity more, and reduced the manufacture cost of air-conditioning system; It is simple and compact for structure, the heating power expansion valve of relative existing structure, and structural change is little, makes that most parts of heating power expansion valve can be general on making.
The present invention is described further below in conjunction with Figure of description.
[description of drawings]
Fig. 1 is the principle schematic that the heating power expansion valve of existing structure is applied in air-conditioning system.
Fig. 2 is the principle schematic that heating power expansion valve of the present invention is applied in air-conditioning system.
Fig. 3 be the present invention when refrigerating state, refrigerant flows to schematic representation in expansion valve.
Fig. 4 be the present invention when heating state, refrigerant flows to schematic representation in expansion valve.
Fig. 5 is first kind of structure of valve hole part of the present invention.
Fig. 6 is second kind of structure of valve hole part of the present invention.
Fig. 7 is the third structure of valve hole part of the present invention.
Fig. 8 is the 4th a kind of structure of valve hole part of the present invention.
[embodiment]
Heating power expansion valve shown in Fig. 3,4, mainly comprise valve body 1 and power head part 2, offer first interface 3 and second interface 4 on the valve body 1, offer the valve port 5 that is used to be communicated with first interface 3 and second interface 4 in the valve body 1, be provided with at the downside of valve port 5 that (the Regulation spring lower end is supported by the adjusting nut that is connected valve body lower end usually by Regulation spring 6, not shown in the figures) and obtain the valve hole part 8 that the transmission bar 7 of power supports from power head part 2 (it comprises gas tank lid, gas tank seat, diaphragm and driver blade), above structure and existing thermal expansion valve arrangement are as good as; It is to offer the throttle orifice 9 that is communicated with first interface 3 and second interface 4 on the valve hole part 8 with the difference part of existing structure heating power expansion valve, is built-in with the movable part 10 that this throttle orifice is remained on unimpeded or closed state at this throttle orifice 9:
Shown in Figure 5 is to offer throttle orifice on valve hole part, and in the built-in first kind of structure letting live moving part of throttle orifice, this valve hole part is an integral structure, its upper end is provided with the circular cone sealing surface 58a that cooperates with valve port, throttle orifice comprise be opened in the valve hole part center vertical hole section 59a corresponding with valve port and be opened in the transverse holes section 59b that valve hole part middle part is communicated with vertical hole section, bottom at vertical hole section 59a is provided with diameter reducing part 58b, upper end in vertical hole section is provided with reducing 58c, movable part 510 is a steel ball, between diameter reducing part 58b and reducing 58c, be subjected to pressure effect shutoff from first interface 3 on diameter reducing part, come-up is opened throttle orifice and the vertical hole section of can not escaping out when being subjected to the pressure from second interface 4;
Shown in Figure 6 is to offer throttle orifice on valve hole part, and in the built-in second kind of structure letting live moving part of throttle orifice, and the difference of it and structure shown in Figure 5 is that valve hole part is a split-type structural, and movable part 610 is similarly steel ball, between diameter reducing part and reducing;
Shown in Figure 7 is to offer throttle orifice on valve hole part, and in built-in the third structure of letting live moving part of throttle orifice, it is with the difference of structure shown in Figure 5 that throttle orifice 79 only comprises and is opened in the valve hole part center vertical hole section corresponding with valve port, middle part in vertical hole section is provided with diameter reducing part, steel ball 710 is held spring 711 and is supported on the diameter reducing part, can overcome the elastic force that keeps spring 711 when being subjected to the pressure from the below and leave diameter reducing part throttle orifice is opened, be subjected to the effect of supporting plate 712 and the throttle orifice of can not escaping out;
Shown in Figure 8 is to offer throttle orifice on valve hole part, and in built-in the 4th kind of structure letting live moving part of throttle orifice, it is with the difference of structure shown in Figure 5 that throttle orifice 89 only comprises and is opened in the valve hole part center vertical hole section corresponding with valve port, movable part 810 cooperates with diameter reducing part by conical surface, and be directed in the throttle orifice by the cylndrical surface, on the cylndrical surface, offer circulation groove 810a.
Fig. 2 is the principle schematic that heating power expansion valve of the present invention is applied in air-conditioning system:
During refrigeration, the high temperature and high pressure gas refrigerant that compressor high-voltage end is discharged enters outdoor unit (being condenser this moment) through four-way change-over valve C2, lowers the temperature to outdoor medium release heat by outdoor unit, becomes the highly pressurised liquid refrigerant; The highly pressurised liquid refrigerant that flows out from outdoor unit is when flowing through heating power expansion valve, under the effect of refrigerant pressure, movable part is closed (see figure 3) with throttle orifice, the highly pressurised liquid refrigerant is machine in the inlet chamber (be vaporizer this moment) after heating power expansion valve valve port throttling step-down, by medium heat in the indoor set absorption chamber, become the low-pressure gas refrigerant; The low-pressure gas refrigerant that flows out from indoor set is sucked by the compressor low voltage terminal and continues circulation through four-way change-over valve C2.
When heating, the high temperature and high pressure gas refrigerant that compressor high-voltage end is discharged enters indoor set (being condenser this moment) through four-way change-over valve C2, lowers the temperature to indoor medium release heat by indoor set, becomes the highly pressurised liquid refrigerant; The highly pressurised liquid refrigerant that flows out from indoor set is when flowing through heating power expansion valve, under the effect of refrigerant pressure, valve hole part is closed the expansion valve valve port, and movable part is opened (see figure 4) with throttle orifice, the highly pressurised liquid refrigerant is machine outside the inlet chamber (be vaporizer this moment) after throttle orifice throttling step-down, by the outer medium heat of outdoor unit absorption chamber, become the low-pressure gas refrigerant; The high-temperature low-pressure gas coolant that flows out from outdoor unit is sucked by the compressor low voltage terminal and continues circulation through four-way change-over valve C2.
Claims (9)
1, a kind of bidirectional flow heat expansion valve, comprise valve body and power head part, offer first interface and second interface on the valve body, offer the valve port that is communicated with first interface and second interface in the valve body, downside at valve port is provided with by Regulation spring and the valve hole part that obtains the relative support of transmission bar of power from power head part, it is characterized in that offering the throttle orifice that is communicated with first interface and second interface on the described valve hole part, be built-in with the movable part that this throttle orifice is remained on unimpeded or closed state at this throttle orifice.
2, bidirectional flow heat expansion valve according to claim 1 is characterized in that described valve hole part is provided with the sealing surface that cooperates with described valve port.
3, bidirectional flow heat expansion valve according to claim 1 and 2 is characterized in that described orifice-built-in is equipped with the diameter reducing part that cooperates with described movable part formation one-way sealing.
4, bidirectional flow heat expansion valve according to claim 3 is characterized in that described movable part upper support has it is supported on maintenance spring on the diameter reducing part.
5, bidirectional flow heat expansion valve according to claim 3 is characterized in that described throttle orifice includes the vertical hole section corresponding with valve port, and described diameter reducing part is positioned at the bottom of this vertical hole section, and described movable part is positioned at the upside of diameter reducing part.
6, bidirectional flow heat expansion valve according to claim 5 is characterized in that described throttle orifice also includes the transverse holes section that is communicated with described vertical hole section.
7, bidirectional flow heat expansion valve according to claim 3 is characterized in that described movable part has the sphere corresponding with described diameter reducing part or the conical surface.
8, bidirectional flow heat expansion valve according to claim 1 and 2 is characterized in that the central direction of described throttle orifice is provided with the limit structure that prevents that described movable part from escaping.
9, bidirectional flow heat expansion valve according to claim 8 is characterized in that being equipped with between described limit structure and the movable part described movable part is supported on maintenance spring on the diameter reducing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100489019A CN100373079C (en) | 2005-01-12 | 2005-01-12 | Two-way flowing thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100489019A CN100373079C (en) | 2005-01-12 | 2005-01-12 | Two-way flowing thermostatic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1804440A true CN1804440A (en) | 2006-07-19 |
| CN100373079C CN100373079C (en) | 2008-03-05 |
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ID=36866554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100489019A Expired - Fee Related CN100373079C (en) | 2005-01-12 | 2005-01-12 | Two-way flowing thermostatic expansion valve |
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| Country | Link |
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| CN (1) | CN100373079C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852307B (en) * | 2009-03-30 | 2011-09-28 | 浙江春晖智能控制股份有限公司 | Thermostatic expansion valve |
| CN102466377A (en) * | 2010-11-18 | 2012-05-23 | 浙江三花股份有限公司 | Expansion valve |
| CN101458019B (en) * | 2008-11-13 | 2012-11-21 | 嵊州市盈亿机械有限公司 | Bidirectional flow heat expansion valve |
| CN104457049A (en) * | 2013-09-13 | 2015-03-25 | 盾安环境技术有限公司 | Double-direction expansion valve and flow control method thereof |
| CN108072209A (en) * | 2016-11-16 | 2018-05-25 | 艾默生环境优化技术(苏州)有限公司 | Two-way thermostatic expansion valve and system comprising same |
| CN109931409A (en) * | 2017-12-18 | 2019-06-25 | 浙江盾安禾田金属有限公司 | Electric expansion valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978062A (en) * | 1990-02-28 | 1990-12-18 | Sporlan Valve Company | Thermostatic expansion valve with bi-directional flow |
| JP3224139B2 (en) * | 1992-03-11 | 2001-10-29 | 株式会社不二工機 | Manufacturing method of temperature expansion valve |
| US5423480A (en) * | 1992-12-18 | 1995-06-13 | Sporlan Valve Company | Dual capacity thermal expansion valve |
| JP3452698B2 (en) * | 1995-08-29 | 2003-09-29 | 株式会社テージーケー | Two-way constant pressure expansion valve |
| JP3452704B2 (en) * | 1995-09-20 | 2003-09-29 | 株式会社テージーケー | Bidirectional subcooling expansion valve |
| CN1269481A (en) * | 1999-04-02 | 2000-10-11 | 邓永林 | External balance thermal expansion valve |
| CN2516919Y (en) * | 2002-01-12 | 2002-10-16 | 陈苏红 | Expansion valve of air conditioner |
-
2005
- 2005-01-12 CN CNB2005100489019A patent/CN100373079C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458019B (en) * | 2008-11-13 | 2012-11-21 | 嵊州市盈亿机械有限公司 | Bidirectional flow heat expansion valve |
| CN101852307B (en) * | 2009-03-30 | 2011-09-28 | 浙江春晖智能控制股份有限公司 | Thermostatic expansion valve |
| CN102466377A (en) * | 2010-11-18 | 2012-05-23 | 浙江三花股份有限公司 | Expansion valve |
| WO2012065437A1 (en) * | 2010-11-18 | 2012-05-24 | 浙江三花股份有限公司 | Expansion valve |
| US9109822B2 (en) | 2010-11-18 | 2015-08-18 | Zhejiang Sanhua Co., Ltd. | Expansion valve |
| CN104457049A (en) * | 2013-09-13 | 2015-03-25 | 盾安环境技术有限公司 | Double-direction expansion valve and flow control method thereof |
| CN104457049B (en) * | 2013-09-13 | 2018-01-26 | 盾安环境技术有限公司 | A kind of Bidirectional expansion valve and its flow control methods |
| CN108072209A (en) * | 2016-11-16 | 2018-05-25 | 艾默生环境优化技术(苏州)有限公司 | Two-way thermostatic expansion valve and system comprising same |
| CN109931409A (en) * | 2017-12-18 | 2019-06-25 | 浙江盾安禾田金属有限公司 | Electric expansion valve |
| CN109931409B (en) * | 2017-12-18 | 2021-11-30 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100373079C (en) | 2008-03-05 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Sanhua Institute Co., Ltd. Assignor: Sanhua Refrigeration Group Co., Ltd., Zhejang Contract record no.: 2012990000430 Denomination of invention: Two-way flowing thermostatic expansion valve Granted publication date: 20080305 License type: Exclusive License Open date: 20060719 Record date: 20120619 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Hangzhou Sanhua Institute Co., Ltd. Assignor: Zhejiang three flower Refrigeration Group Co., Ltd.|Hangzhou three flower microchannel heat exchanger Co., Ltd. Contract record no.: 2012990000430 Date of cancellation: 20130719 |
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| EM01 | Change of recordation of patent licensing contract |
Change date: 20130719 Contract record no.: 2012990000430 Assignor after: Zhejiang three flower Refrigeration Group Co., Ltd. Assignor after: Hangzhou three flower microchannel heat exchanger Co., Ltd. Assignor before: Sanhua Refrigeration Group Co., Ltd., Zhejang |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20210112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |