CN103791663B - A kind of with the heating power expansion valve being unidirectionally controlled function - Google Patents
A kind of with the heating power expansion valve being unidirectionally controlled function Download PDFInfo
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- CN103791663B CN103791663B CN201210429299.3A CN201210429299A CN103791663B CN 103791663 B CN103791663 B CN 103791663B CN 201210429299 A CN201210429299 A CN 201210429299A CN 103791663 B CN103791663 B CN 103791663B
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Abstract
The present invention discloses a kind of with the heating power expansion valve being unidirectionally controlled function, including with the valve body of access road and exit passageway, the temperature sensing part being placed in valve body one end, the first valve hole part of being placed in the inner chamber of valve body, first valve hole part includes the valve rod abutting temperature sensing part, and coordinates with the first valve port arranged in the lumen to control to flow to the first spool of the media fluid flow of exit passageway from access road；Valve body also includes from access road to the receiving portion of extension in valve body, receiving portion offers the second valve port, is provided with the second valve hole part in receiving portion, is additionally provided with restriction the second valve hole part and opens the spacing pin rod of operating position in receiving portion；When medium flows to exit passageway from described access road, the second valve port is closed；When medium flows to access road from exit passageway, the second valve port is opened.Compared with prior art, the present invention can effectively reduce the impact on check valve negotiability on the basis of promoting processing technology.
Description
Technical field
The present invention relates to cooling module technical field, be specifically related to a kind of with the heating power expansion valve being unidirectionally controlled function.
Background technology
Heating power expansion valve as throttling arrangement is widely used in the loop of refrigeration system, by perception ad-hoc location system
The temperature and pressure of cryogen, controls the size of refrigerant flow；Along with the continuous popularization of commercial refrigerating device, heating power expansion valve
Use in commercial Large Copacity refrigeration system is the most extensive.
In prior art, if vaporizer, condenser are away from compressor circuit distance longer (more than 25 meters) in refrigeration systems
In the case of, heating power expansion valve uses a check valve (direction is in opposite direction with expansion valve) in parallel to realize, to improve system work
Make stability.Check valve flows to flow in opposite direction with expansion valve valve port, and during system refrigerant forward flow, (import flows to out
Mouthful), check valve is closed due to pressure reduction, and heating power expansion valve works；During system refrigerant reverse flow, check valve is beaten due to pressure reduction
Opening, heating power expansion valve is inoperative.But, single check valve and bypass channel can increase mounting cost and maintenance cost, latent
Leakage also can increase.
Based on above-mentioned condition, in recent years for simplifying the components and parts of refrigeration system, by swollen with the heating power being unidirectionally controlled function
Expansion valve and the check valve of the single setting of replacement of swollen valve are progressively popularized in refrigeration system.China's Application No. CN200310103606
Patent document disclose a kind of heating power expansion valve.It is concrete as it is shown in figure 1, this heating power expansion valve specifically includes valve body 54 ', at valve
It is provided with access road and exit passageway on body 54 ', is machined with in valve body 54 ' in connecting with access road and exit passageway
Chamber 40 '.Valve port 42 ' it is provided with in inner chamber 40 '.Temperature sensing part 30 ' is placed in one end of valve body 54 ' and closes inner chamber 40 '.Spool
Parts are placed in inner chamber 40 ', and the valve rod 32 ' of its valve hole part abuts temperature sensing part 30 ', the spool 33 ' of valve hole part and valve port
42 ' coordinate, to control to flow to the media fluid flow of exit passageway from access road.Nut cap it is also equipped with in valve body 54 '
64 ', there is above it receiving hole 48 ' communicated with inner chamber 40 '.In receiving hole 48 ', it is provided with spool 70 ', valve body 54 ' adds
Work has auxiliary valve port 50 '.When medium flows to exit passageway from access road, auxiliary valve port 50 ' is closed；When medium is from outlet
When passage flows to described access road, auxiliary valve port 50 ' is opened.
Obviously, the structure although the expansion valve of single setting and check valve can be integrated into one by said structure, but due to
Need on valve body, process an opening separately and nut cap is set, and dispose check valve apparatus, it is easy to cause expansion valve to leak outside, directly
Connect the reliability decrease causing product.Additionally, this structure is complicated, processing technique is required higher.Meanwhile, the band list of prior art
Relatively big to the complicated flow resistance of stream bending opening passage, system is adversely affected.
In view of this, it would be highly desirable to carry out structure optimization for the existing heating power expansion valve with check valve, to promote processing work
Skill and functional reliability, reduce the impact for check valve negotiability of the inner elements of check valve position limiting structure.
Summary of the invention
For drawbacks described above, present invention solves the technical problem that and be to provide a kind of swollen with the heating power being unidirectionally controlled function
Swollen valve, can effectively reduce the impact on check valve negotiability on the basis of promoting processing technology.
The present invention provide with being unidirectionally controlled the heating power expansion valve of function, including with access road and exit passageway
Valve body, the temperature sensing part being placed in described valve body one end, the first valve hole part of being placed in the inner chamber of described valve body, described first valve
Core components includes the valve rod abutting described temperature sensing part, and coordinates with the first valve port being arranged in described inner chamber to control from institute
State the first spool that access road flows to the media fluid flow of described exit passageway；Described valve body also includes leading to from described entrance
The receiving portion that road extends in described valve body, described accommodation section offers the second valve port, is provided with second in described accommodation section
Valve hole part, is additionally provided with described second valve hole part of restriction and opens the spacing pin rod of operating position in described accommodation section；Work as Jie
Matter is when described access road flows to described exit passageway, and described second valve port is closed；When medium flows to from described exit passageway
During described access road, described second valve port is opened.
Preferably, described valve body offering the pilot hole connected with described accommodation section, described spacing pin rod plug-in mounting is fixed
It is arranged in described pilot hole.
Preferably, axially opposingly with described pilot hole, another sidewall of described accommodation section offers Blind locating holes, institute
The inner end stating spacing pin rod is placed in described Blind locating holes.
Preferably, in the perspective plane being perpendicular to described second valve hole part direction of displacement, it is positioned at the institute of described accommodation section
State the spacing pin rod area ratio with described accommodation section less than 0.2.
Preferably, the axial line of described second valve hole part is coaxially disposed with the centrage of described access road.
Preferably, described spacing pin rod arranges elastomeric element at the cooperation position of described second valve hole part.
Preferably, the setting direction of described spacing pin rod is perpendicular with the direction of displacement of described second valve hole part.
The present invention provide with being unidirectionally controlled the heating power expansion valve of function, the receiving portion of its second valve hole part is valve body
On the extension of access road, it is not necessary to additionally process hole, it is simple to carry out structure processing；Meanwhile, the second valve hole part is built-in
In valve inner, install simple and reliable, decrease the hidden danger leaked outside.Additionally, this programme uses spacing pin rod to limit the second spool
Parts open operating position, it is also possible to be greatly reduced the spacing stop to circulation passage, provide reliable guarantee for promoting valve function.
In the preferred version of the present invention, spacing pin rod plug-in mounting is fixedly installed in the pilot hole being opened on valve body, work
Skill is relatively easy.Preferably, axially opposingly with this pilot hole, another sidewall of receiving portion offers Blind locating holes, with accommodating
The inner end of spacing pin rod, the spacing pin rod under preferable stress can avoid the damage that improper compression shock may cause,
Can further improve job stability.
In another preferred version of the present invention, the axial line of the second valve hole part coaxially sets with the centrage of access road
Put, be arranged such, reduce the resistance of fluid, improve the environment of flow path system.
Accompanying drawing explanation
Fig. 1 is a kind of typical with the heating power expansion valve structural representation being unidirectionally controlled function in prior art；
Fig. 2 is showing with the thermal expansion valve arrangement being unidirectionally controlled function described in a kind of embodiment in detailed description of the invention
It is intended to；
Fig. 3 is the valve body structure schematic diagram of heating power expansion valve shown in Fig. 2；
Fig. 4 is the A-A sectional view of Fig. 3；
Fig. 5 is the structural representation of the second spool shown in Fig. 2；
Fig. 6 be in detailed description of the invention described in the second embodiment with the thermal expansion valve arrangement being unidirectionally controlled function
Schematic diagram；
Fig. 7 is the valve body structure schematic diagram of heating power expansion valve shown in Fig. 6.
In Fig. 2-Fig. 7:
Valve body 1, access road 11, exit passageway 12, inner chamber the 13, first valve port the 14, second valve port 15, receiving portion 16, hole
17, pilot hole 191, Blind locating holes 192, temperature sensing part the 2, first interface channel the 31, second interface channel 32, bottom face 33,
One valve hole part 4, valve rod 41, spool the 42, second valve hole part the 5, second spool 52, first paragraph 521, second segment 522, elastic
Part 53, spacing pin rod 55, adapter 6, adapter 7, valve component 8, valve-supporting seat 81, spring 82, base 83.
Detailed description of the invention
The core of the present invention be to provide a kind of structure optimization with being unidirectionally controlled the heating power expansion valve of function, to promote
On the basis of processing technology, effectively reduce the impact on check valve negotiability.Below in conjunction with Figure of description by two
Embodiment is described in detail.
Embodiment 1:
Refer to Fig. 2 and Fig. 3, wherein, Fig. 2 be described in first embodiment with the heating power expansion valve being unidirectionally controlled function
Structural representation, Fig. 3 is the valve body structure schematic diagram of heating power expansion valve described in Fig. 2.
As shown in Figures 2 and 3.In the present embodiment, heating power expansion valve includes valve body 1, is provided with entrance and leads on valve body 1
Road 11 and exit passageway 12, be machined with the inner chamber 13 connected with access road 11 and exit passageway 12, temperature sensing part in valve body 1
2 one end being placed in valve body 1.Inner chamber 13 at valve body 1 also includes that connect with temperature sensing part 2 extends vertically through hole 17,17 times, hole
Portion and inner chamber 13 are crossed to form the first valve port 14.
In the through hole 17 being arranged in inner chamber 13 that first valve hole part 4 runs through, its first valve hole part 4 includes valve
Bar 41 and spool 42, valve rod 41 abuts temperature sensing part 2.Shown in figure, valve rod 41 and spool 42 in the present embodiment are integrated
Molding is formed, it is of course also possible to be combination after parts processing.
Being additionally provided with valve component 8 in the inner chamber 13 of valve body 1, this valve component 8 includes the base being fixed on valve body 1
83, the valve-supporting seat 81 of spool 42 is abutted by spring 82.In the present embodiment, fluid flow into adapter 6 and fluid flow out
Adapter 7 is airtight to be welded on valve body 1.Adapter 6 connects with access road 11, and adapter 7 is directly protruding in exit passageway 12 also
Directly it is connected on its bottom face 33.Connected by the first interface channel 31 between the inner chamber 13 of valve body 1 and exit passageway 12.Excellent
Selection of land, exit passageway 12 can be parallel through setting with the first communicating passage 31, so can reduce fluid logical from the first connection
Road 31 enters the resistance of exit passageway 12.
It addition, be the caliber reducing adapter 7, can be substantially elliptical knot by the Cross-section Design of the first communicating passage 31
Structure, specifically please also refer to Fig. 4, this figure is the A-A profile of Fig. 3.It is arranged such, the first communicating passage 31 can be reduced and exist
Axial width, as concrete can be designed to ellipse or the structure of similar track type.
Wherein, the spool 42 of the first valve hole part 4 coordinates with valve port 14 to control to flow to exit passageway from access road 11
The media fluid flow of 12, i.e. when the pressure in temperature sensing part 2 increases, the driver blade of temperature sensing part 2 promotes the first spool portion
Part 4 overcomes the power of spring 82 to move down, and the aperture between spool 42 and the first valve port 14 strengthens, and makes fluid flow strengthen；Phase
Instead, when the pressure in temperature sensing part 2 reduces, the first valve hole part 4 moves up under the restoring force effect of spring 82, spool
42 and first apertures between valve port 14 reduce, and make fluid flow less.
In the coaxial line direction with access road 11, extend in valve body 1 and form a receiving portion 16, in this embodiment
In, receiving portion 16 is specially concentric stepped hole with access road 11 and arranges, and forms the second valve port 15 in the bottom of stepped hole, holds
Receive and led to by the second interface channel 32 between portion 16 and exit passageway 12, between exit passageway 12 and the second interface channel 32 be
Parallel through setting, so can reduce fluid and enter the resistance of the second interface channel 32 from exit passageway 12.
In receiving portion 16, it is additionally provided with the second valve hole part 5, and valve rod 41 passes across receiving portion 16 and access road 11
Between.Certainly, in the present invention, receiving portion 16 can also be the hole, same footpath of access road 11 extension, i.e. receiving portion and entrance
Passage is actual is two parts in a hole, and correspondingly, the second valve port 15 can be opened in the bottom in this hole.
As it can be seen, the second valve hole part 5 includes the second spool 52 and the spacing pin rod 55 being built in receiving portion 16.Its
In, the second spool 52 specifically includes first paragraph 521 and second segment 522, specifically refers to Fig. 5, and second segment 522 is and spacing pin rod
55 insert body coordinated, first paragraph 521 for conical structure and coordinates with the second valve port 15；Wherein, spacing pin rod 55 is used for
Limit the second spool 52 opens operating position.
In work process, when medium flows to described exit passageway 12 from described access road 11, expansion valve throttles, at stream
Under body pressure effect, the second spool 52 abuts the second valve port 15, makes valve port 15 be closed；And when medium is from described outlet
When passage 12 flows to described access road 11, under fluid pressure effect, the second spool 52, away from the second valve port 15, makes valve port 15
Being in opening, under this state, the second spool 52 offsets with spacing pin rod 55, and expansion valve does not works.
Such scheme design, make heating power expansion valve meet be unidirectionally controlled function on the premise of, spacing convection current can be greatly reduced
The stop of circulation passage, compact conformation, easy to process；Meanwhile, the second valve hole part is installed simple and reliable, it is not necessary to additionally process
Hole, decreases the hidden danger leaked outside.
Shown in Fig. 2 and Fig. 3, valve body 1 offers the pilot hole 191 connected with receiving portion 16, in order to spacing pin rod
55 plug-in mountings are fixedly installed in this pilot hole 191；It is understood that spacing pin rod 55 and matched pilot hole 191
Cross sectional shape can arbitrarily select, such as, circular cross-section or polygonal cross-section.Obviously, the manufacturability of circular cross-section is best.
It practice, the outer end of this pilot hole can have reaming section (not shown), and the outer end of spacing pin rod has and expands
The limiting section that hole section is suitable, accurately to control the spacing pin rod position relationship relative to valve body.
It is known that medium has certain operating pressure, the outer end of spacing pin rod 55 and pilot hole 191 in valve body 1
Between use and be connected by sealing, or local can be used to closely cooperate or be pressed into plug to ensure sealing.Preferably, this is connected by sealing
Use and be coated with the realization of anaerobic adhesive technique.
It addition, the inner of spacing pin rod 55 is optimum stress less than the centrage of the second spool 52.Preferably, spacing
The setting direction of pin rod 55 is perpendicular with the direction of displacement of the second valve hole part 5, thus, has bigger under both spacing states
Contact area.
In order to control the impact for the second valve hole part 5 place runner flow area of the spacing pin rod 55 to greatest extent,
In the perspective plane being perpendicular to the second valve hole part 5 direction of displacement, the spacing pin rod 55 being positioned at receiving portion 16 can be controlled and hold
Receive the area ratio in portion 16 less than 0.2, thus reduce the stop to circulation passage under conditions of ensureing impact strength.Additionally,
The axial line of the second valve hole part 5 is coaxially disposed with the centrage of access road 11, the most effectively controls the second spool portion
The flow resistance of part 5 place runner.
On this basis, it is also possible at the cooperation position with the second valve hole part 5 of spacing pin rod 55, elastic is set
Part 53, is arranged such, and the second spool 52 is opened the fluid pressure generation impact of moment and suitably can be absorbed by elastomeric element 53, with
Avoid the second spool 52 directly to press on spacing pin rod 55 and form unlatching noise.
Embodiment 2:
The present embodiment is compared with first embodiment, and both main bodys are constituted and annexation is identical.Difference is, this
Scheme has additional further positioning function for the inner end of spacing pin rod 55.
Please also refer to Fig. 6 and Fig. 7, wherein, Fig. 6 be described in the second embodiment with the heating power being unidirectionally controlled function
Expansion valve mechanism schematic diagram；Fig. 7 is the valve body structure schematic diagram of heating power expansion valve shown in Fig. 6.For clearly illustrate this programme with
The difference contact of first embodiment, the component of said function and structure all use same reference numerals to indicate.
As shown in Figure 6 and Figure 7, axially opposingly with pilot hole 191, another sidewall of receiving portion 16 offers Blind locating holes
192, the inner end of spacing pin rod 55 is placed in this Blind locating holes 192.In this programme, the inner extending end of spacing pin rod 55 is by reliably fixed
Position, is different from the stress of beam type in first embodiment, further improves its job stability.
Special instruction is, be arranged on spacing pin rod 55 not shown in the figure of the present embodiment with the joining of the second valve hole part 5
Closing the elastomeric element 53 of position, it is clear that according to actual needs, those skilled in the art realize with reference to first embodiment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. with being unidirectionally controlled the heating power expansion valve of function, including with access road (11) and the valve of exit passageway (12)
Body (1), the temperature sensing part (2) being placed in described valve body (1) one end, the first valve hole part of being placed in the inner chamber of described valve body (1)
(4), described first valve hole part (4) includes the valve rod (41) abutting described temperature sensing part (2), and be arranged on described inner chamber
(13) the first valve port (14) in coordinates to control to flow to the medium stream of described exit passageway (12) from described access road (11)
First spool (42) of body flow；It is characterized in that, described valve body (1) also includes from described access road (11) to described valve body
(1) receiving portion (16) extended in, described accommodation section (16) offer the second valve port (15), arrange in described accommodation section (16)
There is the second valve hole part (5), described accommodation section (16) are additionally provided with described second valve hole part (5) of restriction and open operating position
Spacing pin rod (55)；When medium flows to described exit passageway (12) from described access road (11), described second valve port
(15) close；When medium flows to described access road (11) from described exit passageway (12), described second valve port (15) is opened；
The pilot hole (191) connected with described accommodation section (16), described spacing pin rod (55) plug-in mounting is offered on described valve body (1)
It is fixedly installed in described pilot hole (191).
The most according to claim 1 with the heating power expansion valve being unidirectionally controlled function, it is characterised in that with described pilot hole
(191) axially opposingly, another sidewall of described accommodation section (16) offers Blind locating holes (192), described spacing pin rod (55)
Inner end be placed in described Blind locating holes (192) in.
It is the most according to any one of claim 1 to 2 with the heating power expansion valve being unidirectionally controlled function, it is characterised in that
In the perspective plane being perpendicular to described second valve hole part (5) direction of displacement, it is positioned at the described spacer pin of described accommodation section (16)
Bar (55) is less than 0.2 with the area ratio of described accommodation section (16).
The most according to claim 3 with the heating power expansion valve being unidirectionally controlled function, it is characterised in that described second spool
The axial line of parts (5) is coaxially disposed with the centrage of described access road (11).
The most according to claim 4 with the heating power expansion valve being unidirectionally controlled function, it is characterised in that described spacing pin rod
(55) elastomeric element (53) is set with at the cooperation position of described second valve hole part (5).
The most according to claim 3 with the heating power expansion valve being unidirectionally controlled function, it is characterised in that described spacing pin rod
(55) setting direction is perpendicular with the direction of displacement of described second valve hole part (5).
The most according to claim 4 with the heating power expansion valve being unidirectionally controlled function, it is characterised in that described spacing pin rod
(55) setting direction is perpendicular with the direction of displacement of described second valve hole part (5).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429299.3A CN103791663B (en) | 2012-10-31 | 2012-10-31 | A kind of with the heating power expansion valve being unidirectionally controlled function |
| US14/396,684 US9631850B2 (en) | 2012-04-28 | 2012-11-20 | Thermal expansion valve with one-way control function |
| PCT/CN2012/084881 WO2013159509A1 (en) | 2012-04-28 | 2012-11-20 | Thermal expansion valve with one-way control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429299.3A CN103791663B (en) | 2012-10-31 | 2012-10-31 | A kind of with the heating power expansion valve being unidirectionally controlled function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103791663A CN103791663A (en) | 2014-05-14 |
| CN103791663B true CN103791663B (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210429299.3A Active CN103791663B (en) | 2012-04-28 | 2012-10-31 | A kind of with the heating power expansion valve being unidirectionally controlled function |
Country Status (1)
| Country | Link |
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| CN (1) | CN103791663B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958966B (en) * | 2016-01-12 | 2021-05-14 | 浙江三花制冷集团有限公司 | Thermal expansion valve |
| CN110985716A (en) * | 2019-12-24 | 2020-04-10 | 珠海格力电器股份有限公司 | Control valve with built-in one-way flow guide structure and refrigeration system |
| CN114251462A (en) * | 2020-09-24 | 2022-03-29 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375951A (en) * | 2012-04-28 | 2013-10-30 | 浙江三花股份有限公司 | Thermostatic expansion valve with unilateral control function |
| CN103542645A (en) * | 2012-07-12 | 2014-01-29 | 浙江三花股份有限公司 | Thermostatic expansion valve with one-way control function |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5975130A (en) * | 1997-04-07 | 1999-11-02 | Valve Concepts, Inc. | Check valve with a low inertia moving part for low or high pressure differentials |
| US6691924B1 (en) * | 2002-10-30 | 2004-02-17 | Danfoss A/S | Expansion valve having an internal bypass |
| US7441563B2 (en) * | 2006-02-17 | 2008-10-28 | Emerson Electric Co. | Thermostatic expansion valve with check valve |
| CN2931997Y (en) * | 2006-06-21 | 2007-08-08 | 上海恒温控制器厂有限公司 | Thermal expansion valve having one-way valve function |
| CN201053524Y (en) * | 2007-06-22 | 2008-04-30 | 广东恒基金属制品实业有限公司 | One-way valve for heat pump refrigeration system |
| 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 |
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2012
- 2012-10-31 CN CN201210429299.3A patent/CN103791663B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375951A (en) * | 2012-04-28 | 2013-10-30 | 浙江三花股份有限公司 | Thermostatic expansion valve with unilateral control function |
| CN103542645A (en) * | 2012-07-12 | 2014-01-29 | 浙江三花股份有限公司 | Thermostatic expansion valve with one-way control function |
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| CN103791663A (en) | 2014-05-14 |
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Effective date of registration: 20170118 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 Liquan village of Chengguan Zhejiang city of Shaoxing province Xinchang County town Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
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Effective date of registration: 20220809 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. |