CN103423926A - Thermal expansion valve - Google Patents
Thermal expansion valve Download PDFInfo
- Publication number
- CN103423926A CN103423926A CN2012101538351A CN201210153835A CN103423926A CN 103423926 A CN103423926 A CN 103423926A CN 2012101538351 A CN2012101538351 A CN 2012101538351A CN 201210153835 A CN201210153835 A CN 201210153835A CN 103423926 A CN103423926 A CN 103423926A
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- China
- Prior art keywords
- valve
- expansion valve
- heating power
- power expansion
- spool
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- 239000012530 fluid Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims description 32
- 230000004308 accommodation Effects 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 2
- 238000012545 processing Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a thermal expansion valve with a unidirectional control function. The thermal expansion valve comprises a valve (1), a temperature sensing assembly (2) and a first valve element assembly (4). The valve (1) is provided with an inlet channel (11) and an outlet channel (12), the temperature sensing assembly (2) is arranged at one end of the valve (1), the first valve element assembly (4) is arranged in an inner cavity of the valve (1) and comprises a valve stem (41) and a first valve element (42), the valve stem (41) is abutted to the temperature sensing assembly (2), and the first valve element (42) is matched with a first valve port (14) arranged in the inner cavity (13), so that the flow of medium fluid which flows from the inlet channel (11) to the outlet channel (12) can be controlled. The thermal expansion valve is characterized in that the valve (1) is further provided with an accommodating portion, a cover (5) is arranged in the accommodating portion, and an inner hole (16) of the cover (5) is communicated with the inlet channel (11) and the inner cavity (13) to form auxiliary fluid channels. Compared with the prior art, the thermal expansion valve with the unidirectional control function has the advantages that the cover is arranged on the valve, so that a valve machining process is simplified; a valve port and a sealed position can be machined on the cover in the preferred scheme by means of drawing at one step, and a guide portion or limiting portion can be arranged on the cover by means of stamping, so that the machining process is simple and reliable, and the thermal expansion valve is suitable for mass production.
Description
Technical field
The invention belongs to refrigeration control system, the heating power expansion valve with individual event control function that is specifically related to use in a kind of air-conditioning system.
Background technology
Heating power expansion valve is generally used for control system for heat pump, in control system for heat pump, cold-producing medium generally can reverse flow to realize refrigeration and the function heated, the heating power expansion valve of prior art is generally unidirectional setting, in bypass, check valve is set outside.When the system forward flow, closed check valve, medium is by the expansion valve throttling, when when system reverse flows, one-way valve opens, medium flows through by check valve. but independent check valve and bypass channel can increase mounting cost and maintenance cost, and potential leakage also can increase.
So, in recent years for simplifying the vigour part of refrigeration system, it is progressively universal in refrigeration system that the heating power expansion valve that will control function with individual event replaces expansion valve and the check valve of single setting.China's application number patent document that is CN200310103606 discloses a kind of specifically heating power expansion valve as shown in Figure 1.The heating power expansion valve of this technology comprises valve body 54 ', is provided with access road and exit passageway on valve body 54 ', is processed with the inner chamber 40 ' be communicated with access road and exit passageway in valve body 54 '.Be provided with valve port 42 ' in inner chamber 40 '.Temperature sensing part 30 ' is placed in an end the closed inner chamber 40 ' of valve body 54 '.Valve hole part is placed in inner chamber 40 ', valve rod 32 ' the butt temperature sensing part 30 ' of its valve hole part, and the spool 33 ' of valve hole part coordinates with valve port 42 ', to control the medium fluid flow that flows to exit passageway from access road.Nut cap 64 ' also is installed in valve body 54 ', there is the accommodation hole 48 ' communicated with inner chamber 40 ' above it.Be provided with spool 70 ' in accommodation hole hole 48 ', be processed with auxiliary valve port 50 ' on valve body 54 '.When medium flows to exit passageway from access road, auxiliary valve port 50 ' is closed; When medium flows to described access road from exit passageway, auxiliary valve port 50 ' is opened.
The structure although said structure can be integrated into one the expansion valve of single setting and check valve, but complex structure, processing technology to valve body is had relatively high expectations, and the structure of the heating power expansion valve with unidirectional control function of prior art is improved, simplified structure and raising reliability are the art problems to be solved.
Summary of the invention
For the problems referred to above, the technical problem that the present invention solves is, a kind of simplified structure, the heating power expansion valve with unidirectional control function that reliability is high are provided.Comprise the valve body with access road and exit passageway, be placed in the temperature sensing part of described valve body one end, be placed in the first valve hole part of the inner chamber of described valve body, described the first valve hole part comprises the valve rod of the described temperature sensing part of butt, with be arranged on described inner chamber in the first valve port coordinate to control the first spool that flows to the medium fluid flow of described exit passageway from described access road, it is characterized in that, described valve body also offers accommodation section, be provided with cover body in described accommodation section, the endoporus of described cover body is communicated with described access road and described inner chamber to form the fluid accessory channel, be provided with the second spool of controlling described fluid accessory channel opening and closing in described endoporus, when medium flows to described exit passageway from described access road, described fluid accessory channel cuts out, when medium flows to described access road from described exit passageway, described fluid accessory channel is opened.
Further, the heating power expansion valve based on said structure, also comprise the seal cover of the accommodation section of airtight described valve body;
Preferably, be provided with the second valve port coordinated with described the second spool on described valve body;
Preferably, be provided with the second valve port coordinated with described the second spool on described cover body;
Preferably, described cover body is cylinder-like structure, and is processed to form stage portion by reducing, and the interior step surface of described stage portion forms described the second valve port;
Further, also be provided with seal member between the outer step surface of described stage portion and described valve body;
Preferably, the bottom of described cover body butt described accommodation section, the length of the diameter shrinkage part of described cover body equates with the thickness after the assembling of described seal member compression.
Preferably, described the second spool is specially the spheroid of nonmetallic materials;
Further, form the guide part of described the second spool on the perisporium of described cover body by process for stamping;
Further, form the restriction section of described the second spool on the perisporium of described cover body by process for stamping;
Further, be provided with the restriction section of described the second spool on described seal cover.Described seal cover (10)
Further, described seal cover and described valve body are affixed by laser weld.
Heating power expansion valve with unidirectional control function disclosed by the invention is to simplify the processing technology of valve body by cover body is set on valve body.And, in preferred scheme, cover body can disposablely process valve port and sealing station by stretching mode, and by impact style, guide part or restriction section is set, and makes processing technology more simple and reliable, be applicable to produce in enormous quantities.
The accompanying drawing explanation
Fig. 1: the structural representation of the heating power expansion valve with unidirectional control function of prior art;
Fig. 2: the concrete structure schematic diagram of the heating power expansion valve that the present invention provides;
Fig. 3: front view and the side view of the cover body part in the heating power expansion valve shown in Fig. 2;
Fig. 4: the concrete structure schematic diagram of the another kind of heating power expansion valve that the present invention provides;
Fig. 5: front view and the side view of the cover body part in the heating power expansion valve shown in Fig. 4.
Symbol description in figure:
The 1-valve body;
11-access road, 12-exit passageway;
13-inner chamber, 14-the first valve port, 15-the second valve port;
16-endoporus, 17-through hole;
The 18-step surface, the 19-intercommunicating pore;
The 2-temperature sensing part
3-accommodation section, 31/32-aperture;
4-the first valve hole part;
41-valve rod, 42-the first spool;
The 5/5A-cover body;
51-seal member, 52-the second spool;
Step surface in 53-stage portion, 54-;
The outer step surface of 55-, 56-guide part;
57/57A-restriction section, 58-opening;
6/7-takes over;
The 8-valve component;
81-valve-supporting seat, 82-spring, 83-base;
The 9-nut cap.
The 10-seal cover
The specific embodiment
Below in conjunction with accompanying drawing, technological thought of the present invention is illustrated.
The concrete structure schematic diagram that Fig. 2 is the heating power expansion valve that provides of the present invention, front view and side view that Fig. 3 is the cover body part in Fig. 2.
As shown in Figures 2 and 3.In this specific embodiment, heating power expansion valve comprises valve body 1, be provided with access road 11 and exit passageway 12 on valve body 1, be processed with the inner chamber 13 be communicated with access road 11 and exit passageway 12 in valve body 1, temperature sensing part 2 is placed in an end the closed inner chamber 13 of valve body 1, in the inner chamber 13 of valve body 1, processing also is processed with through hole 17, and through hole 17 forms the first valve port 14 with the junction of inner chamber 13.
What the first valve hole part 4 ran through arranges in through hole 17, the tapered end that it comprises valve rod 41 and forms the first spool 42, its valve rod 41 butt temperature sensing part 2.Also be provided with valve component 8 in the inner chamber 13 of valve body 1, it comprises the base 83 that is fixed on valve body 1, by the valve-supporting seat 81 of spring 82 butt the first spools 42.Taking over 6 is welded on valve body 1 and is connected with exit passageway 12 with access road 11 respectively with adapter 7 is airtight.Its first spool 42 coordinates to control the medium fluid flow that flows to exit passageway 12 from access road 11 with the first valve port 14, when the pressure in temperature sensing part 2 increases, the driver blade of temperature sensing part 2 promotes the power that the first valve hole part 4 overcomes spring 82 and moves down, the first spool 42 is away from the first valve port 14, aperture between the first spool 42 and the first valve port 14 is strengthened, and fluid flow strengthens; On the contrary, during pressure decreased in temperature sensing part 2, the first valve hole part 4 moves up under the restoring force effect of spring 82, and the first spool 42, away from the first valve port 14, reduces the aperture between the first spool 42 and the first valve port 14, makes fluid flow less.In this embodiment, the formation that is formed in one of valve rod 41 and the first spool 42, can certainly, for parts processing and combination, not repeat them here.
In this embodiment, also offer accommodation section 3 on valve body 1, accommodation section 3 is communicated with access road 11 by aperture 31, and is communicated with inner chamber 13 by aperture 32.Be provided with cover body 5 in accommodation section 3.Cover body 5 is the cardinal principle cylinder-like structure by stretching, and carries out reducing at the one end and forms reducing diameter part, and reducing diameter part is connected with aperture 32.By above-mentioned reducing processing, make cover body 5 form stage portion 53, form the second valve port 15 on the interior step surface 54 of stage portion 53.Be provided with seal member 51 between the outer step surface 55 of stage portion 53 and described valve body 1, accommodation section 3 is airtight by sealing parts 51 and inner chamber 13.
Be provided with spheroid as the second spool 52 in the endoporus 16 of cover body 5, the diameter of spheroid is greater than the diameter of cover body 5 reducing diameter parts and is less than the diameter of cover body 5.Be processed with three projections to endoporus 16 by adopting punching press to get ready on cover body 5, as the restriction section 57 of the second spool 52, spheroid can be at endoporus 16 Free-rollings of cover body 5 like this.Seal cover 10 butt cover bodies 5 also are welded on valve body 1 and seal accommodation section, and preferred seal cover 10 is with valve body 1 by laser weld, and the concentrated indiffusion of the heat produced like this, avoid seal member 51 heat damage.
In this embodiment; preferably, the reducing diameter part of cover body 5 is connected to the bottom of accommodation section 3, like this as the support of seal member 51; the length of the reducing diameter part of cover body 5 is exactly the thickness after seal member 51 assembling compression, can protect seal member 51 not to be further compressed and loses effect.
The concrete structure schematic diagram that Fig. 4 is the another kind of heating power expansion valve that provides of the present invention, front view and side view that Fig. 5 is the cover body part in heating power expansion valve.
As shown in Figure 4 and Figure 5.Be with the previous embodiment difference in this embodiment, offer accommodation section 3 on valve body 1, accommodation section 3 is communicated with access road 11 by aperture 31, and is communicated with inner chamber 13 by aperture 32.At the accommodation section 3 of valve body 1 and junction second valve port 15 of aperture 32.
Be provided with cover body 5A cylindraceous in accommodation section 3, cover body 5A is the bottom that tubular structure directly is connected to accommodation section 3, is provided with spheroid and is less than the diameter of cover body 5 as the sphere diameter of the second spool 52, the second spools 52 in the endoporus 16 of cover body 5A.Can certainly adopt other structures as the second spool 52, as adopted cone or column structure.Those skilled in the art should go out multiple originating party formula by historical romance, does not repeat them here.
Form three interior shins as guide part 56, the second spool 52(spheroids by process for stamping on the perisporium of cover body 5) Free-rolling in the above.
Above-mentioned design is simplified the processing technology of valve body by cover body is set on valve body.And, in preferred scheme, cover body can disposable formation valve port and sealing station by stretching mode, and by impact style, guide part or restriction section is set, and makes processing technology more simple and reliable, is applicable to production in enormous quantities.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. a heating power expansion valve, comprise the valve body (1) with access road (11) and exit passageway (12), be placed in the temperature sensing part (2) of described valve body (1) one end, be placed in first valve hole part (4) of the inner chamber of described valve body (1), described the first valve hole part (4) comprises the valve rod (41) of the described temperature sensing part of butt (2), with be arranged on described inner chamber (13) in the first valve port (14) coordinate the first spool (42) that flows to the medium fluid flow of described exit passageway (12) from described access road (11) to control, it is characterized in that, described valve body (1) also offers accommodation section, be provided with cover body (5) in described accommodation section, the endoporus (16) of described cover body (5) is communicated with described access road (11) and described inner chamber (13) to form the fluid accessory channel, be provided with the second spool (52) of controlling described fluid accessory channel opening and closing in described endoporus (16), when medium flows to described exit passageway (12) from described access road (11), described fluid accessory channel cuts out, when medium flows to described access road (11) from described exit passageway (12), described fluid accessory channel is opened.
2. heating power expansion valve as claimed in claim 1, is characterized in that, also comprises the seal cover (10) of the accommodation section of airtight described valve body (1).
3. heating power expansion valve as claimed in claim 2, is characterized in that, is provided with the second valve port (15) coordinated with described the second spool (52) on described valve body (1).
4. heating power expansion valve as claimed in claim 2, is characterized in that, is provided with the second valve port (15) coordinated with described the second spool (52) on described cover body (5).
5. heating power expansion valve as claimed in claim 4, it is characterized in that, described cover body (5) is cylinder-like structure, and forms stage portion (53) by reducing, and the interior step surface (54) of described stage portion (53) forms described the second valve port (15).
6. heating power expansion valve as claimed in claim 5, is characterized in that, between the outer step surface (55) of described stage portion (53) and described valve body (1), also is provided with seal member (51).
7. heating power expansion valve as claimed in claim 6, it is characterized in that, the bottom of described cover body (5) butt described accommodation section (3), the thickness after the assembling compression of the length of the diameter shrinkage part of described cover body (5) and described seal member (51) equates.
8. as the described heating power expansion valve of claim 1-7 any one, it is characterized in that, described the second spool (52) is specially the spheroid of nonmetallic materials.
9. as the described heating power expansion valve of claim 1-7 any one, it is characterized in that, form the guide part (56) of described the second spool (52) on the perisporium of described cover body (5) by process for stamping.
10. as the described heating power expansion valve of claim 1-7 any one, it is characterized in that, form the restriction section (57) of described the second spool (52) on the perisporium of described cover body (5) by process for stamping.
11. as the described heating power expansion valve of claim 2-7 any one, it is characterized in that, be provided with the restriction section (57) of described the second spool (52) on described seal cover (10).
12. as the described heating power expansion valve of claim 2-7 any one, it is characterized in that, described seal cover (10) is affixed by laser weld with described valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210153835.1A CN103423926B (en) | 2012-05-16 | 2012-05-16 | A kind of heating power expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210153835.1A CN103423926B (en) | 2012-05-16 | 2012-05-16 | A kind of heating power expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103423926A true CN103423926A (en) | 2013-12-04 |
| CN103423926B CN103423926B (en) | 2016-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210153835.1A Active CN103423926B (en) | 2012-05-16 | 2012-05-16 | A kind of heating power expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103423926B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466088A (en) * | 2014-08-01 | 2016-04-06 | 浙江三花股份有限公司 | Thermostatic expansion valve and heat pump system provided with thermostatic expansion valve |
| CN105485979A (en) * | 2014-09-16 | 2016-04-13 | 浙江三花股份有限公司 | Thermal expansion valve and heat pump system having same |
| CN106288547A (en) * | 2015-05-22 | 2017-01-04 | 浙江三花股份有限公司 | A kind of band is unidirectionally controlled the heating power expansion valve of function |
| CN113719646A (en) * | 2020-05-12 | 2021-11-30 | 盾安环境技术有限公司 | Flow control device and air conditioning system with same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4852364A (en) * | 1987-10-23 | 1989-08-01 | Sporlan Valve Company | Expansion and check valve combination |
| US5454233A (en) * | 1994-09-07 | 1995-10-03 | Chrysler Corporation | Expansion valve and receiver assembly |
| JP2005214356A (en) * | 2004-01-30 | 2005-08-11 | Fuji Koki Corp | Check valve |
| CN200943737Y (en) * | 2006-07-28 | 2007-09-05 | 吴晃璋 | Improved Check Valve for Outlet Pipe of Vertical Pump Used in Chemical Industry |
| CN101415979A (en) * | 2006-02-17 | 2009-04-22 | 艾默生电气公司 | Thermostatic expansion valve with check valve |
| CN101424347A (en) * | 2007-09-05 | 2009-05-06 | 艾默生电气公司 | Flow control valve |
| CN201387188Y (en) * | 2009-05-25 | 2010-01-20 | 嵊州盈嘉机械有限公司 | Two-way circulation heating power expansion valve |
-
2012
- 2012-05-16 CN CN201210153835.1A patent/CN103423926B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4852364A (en) * | 1987-10-23 | 1989-08-01 | Sporlan Valve Company | Expansion and check valve combination |
| US5454233A (en) * | 1994-09-07 | 1995-10-03 | Chrysler Corporation | Expansion valve and receiver assembly |
| JP2005214356A (en) * | 2004-01-30 | 2005-08-11 | Fuji Koki Corp | Check valve |
| CN101415979A (en) * | 2006-02-17 | 2009-04-22 | 艾默生电气公司 | Thermostatic expansion valve with check valve |
| CN200943737Y (en) * | 2006-07-28 | 2007-09-05 | 吴晃璋 | Improved Check Valve for Outlet Pipe of Vertical Pump Used in Chemical Industry |
| CN101424347A (en) * | 2007-09-05 | 2009-05-06 | 艾默生电气公司 | Flow control valve |
| CN201387188Y (en) * | 2009-05-25 | 2010-01-20 | 嵊州盈嘉机械有限公司 | Two-way circulation heating power expansion valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466088A (en) * | 2014-08-01 | 2016-04-06 | 浙江三花股份有限公司 | Thermostatic expansion valve and heat pump system provided with thermostatic expansion valve |
| CN105485979A (en) * | 2014-09-16 | 2016-04-13 | 浙江三花股份有限公司 | Thermal expansion valve and heat pump system having same |
| CN105485979B (en) * | 2014-09-16 | 2018-10-23 | 浙江三花制冷集团有限公司 | Heating power expansion valve and heat pump system with the heating power expansion valve |
| CN106288547A (en) * | 2015-05-22 | 2017-01-04 | 浙江三花股份有限公司 | A kind of band is unidirectionally controlled the heating power expansion valve of function |
| CN106288547B (en) * | 2015-05-22 | 2019-10-22 | 浙江三花制冷集团有限公司 | A kind of heating power expansion valve of the unidirectionally controlled function of band |
| CN113719646A (en) * | 2020-05-12 | 2021-11-30 | 盾安环境技术有限公司 | Flow control device and air conditioning system with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103423926B (en) | 2016-08-17 |
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Effective date of registration: 20170228 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
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Effective date of registration: 20220818 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
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