CN203672005U - Two-way throttling valve and refrigeration system with same - Google Patents

Two-way throttling valve and refrigeration system with same Download PDF

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Publication number
CN203672005U
CN203672005U CN201320876697.XU CN201320876697U CN203672005U CN 203672005 U CN203672005 U CN 203672005U CN 201320876697 U CN201320876697 U CN 201320876697U CN 203672005 U CN203672005 U CN 203672005U
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China
Prior art keywords
valve
housing
spool
throttling
slideway
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Active
Application number
CN201320876697.XU
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Chinese (zh)
Inventor
施正兴
梁桂源
苏波
周剑波
安杰
魏书生
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201320876697.XU priority Critical patent/CN203672005U/en
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Abstract

The utility model discloses a two-way throttling valve and a refrigeration system with the two-way throttling valve. The two-way throttling valve comprises a valve casing, a first valve seat, a second valve seat, a first valve plug and a second valve plug, and further comprises a third valve plug, wherein the first valve seat is fixedly arranged in a valve cavity in a sealing mode and is close to the first end, a first slide way is arranged on the first valve seat, the second valve seat is fixedly arranged in the valve cavity in a sealing mode and is close to the second end, a second slide way is arranged on the second valve seat, the first valve plug is arranged in the first slide way in a slidable mode, a first throttling hole is formed in the first valve plug, the second valve plug is arranged in the second slide way in a slidable mode, a second throttling hole is formed in the second valve plug, the third valve plug is arranged in the valve cavity and between the first valve plug and the second valve plug, and a third throttling hole is formed in the third valve plug and extends in the axial direction of the valve casing. According to the two-way throttling valve, due to the fact that a two-stage throttling structure is formed in the mode that the third valve plug is arranged between the first valve plug and the second valve plug, the pressure difference of the valve plug of each stage is reduced, the cavitation effect is avoided, and the effects that throttling noise is lowered, and the service life is prolonged are achieved.

Description

Bidirectional throttling valve and there is its refrigeration system
Technical field
The utility model relates to refrigerating field, particularly relates to a kind of bidirectional throttling valve and has its refrigeration system.
Background technology
Existing bidirectional throttling valve generally includes the body of a tubulose, in body, be provided with the first valve seat and the second valve seat that reverse symmetry is installed, in the first valve seat, be mounted with movably, middle with axial pore and periphery with the first spool of three rib pieces, in the second valve seat, be mounted with movably, middle with axial pore and periphery with the second spool of three rib pieces.When this kind of bidirectional throttling valve uses in air-conditioner, if source pump is used the first spool and the second spool simultaneously, if single cooler group is only used the second spool.
This kind of bidirectional throttling valve is the one of orifice throttle structure, from Throttle Principle, what this choke valve adopted is the mode (being that single throttling realizes throttling) of single-stage orifice throttle, be that list is cold or source pump is all by the cavity of throttle valve body inside, and play the effect of reducing pressure by regulating flow by the aperture of a side valve core inner.In this course, due to the hypotensive effect of throttling valve core, when the pressure differential before and after spool reaches certain value, may produce cavitation phenomenon, air pocket breaks, and tube wall is produced and is impacted, with the effect such as pipe friction, cause that tube wall tubing produces cavitation erosion, dither, is accompanied by noise problem.
Summary of the invention
For above-mentioned prior art present situation, technical problem to be solved in the utility model is, a kind of bidirectional throttling valve is provided, and it can eliminate the generation of air pocket in throttling process, thereby avoids the generation of cavitation erosion and high frequency noise.Another technical problem to be solved in the utility model is, a kind of refrigeration system with this bidirectional throttling valve is provided.
In order to solve the problems of the technologies described above, a kind of bidirectional throttling valve provided by the utility model, comprising:
Valve casing, has first end and the second end, is provided with the valve pocket that is through to this second end from this first end on this valve casing;
The first valve seat, be sealingly fastened in described valve pocket by described first end place, on this first valve seat, be provided with the first slideway;
The second valve seat, is sealingly fastened in described the second end place of leaning in described valve pocket, on this second valve seat, is provided with the second slideway;
The first spool, is mounted slidably in described the first slideway, is provided with along the axially extended first segment discharge orifice of valve casing on this first spool;
The second spool, is mounted slidably in described the second slideway, is provided with along the axially extended second section discharge orifice of valve casing on this second spool; Also comprise:
The 3rd spool, is arranged in the described valve pocket between described the first spool and described the second spool, is provided with along axially extended the 3rd throttle orifice of valve casing on the 3rd spool.
Therein in an embodiment, the refrigerant force value after described the 3rd throttling spool is greater than at that time refrigerant evaporation saturation pressure value at temperature.
In an embodiment, the quantity of described the 3rd throttle orifice is more than two therein.
In an embodiment, all described the 3rd throttle orifices are along the circumferential direction uniform centered by the center line of described the 3rd spool therein.
In an embodiment, described the 3rd spool is provided with radially outward outstanding boss by one end of described first end, on the inwall of described valve casing, is provided with annular groove therein, and described boss is positioned at described annular groove.
In an embodiment, axial along described valve casing therein, the width of described annular groove is greater than the width of described boss.
Therein in an embodiment, described valve casing comprises hollow the first housing and hollow the second housing that connect successively by screw thread from described first end to described the second end, described the first housing centre bore is step by one end of described the second end, described the second housing centre bore is step by one end of described first end, described the 3rd spool is loaded on described the second housing centre bore by one end of described first end, between described the second housing and described the first housing, forms described annular groove.
Therein in an embodiment, described valve casing also comprises hollow the 3rd housing and hollow the 4th housing, described the 3rd housing and described the first housing are threaded connection by one end of described first end, described the first valve seat is fixed between described the 3rd housing and described the first housing, described the 4th housing and described the second housing are threaded connection by one end of described the second end, and described the second valve seat is fixed between described the second housing and described the 4th housing.
Therein in an embodiment, described bidirectional throttling valve also comprises the first screen pack and the second screen pack, described the first screen pack is arranged at described the first slideway one end by described first end, and described the second screen pack is arranged at described the second slideway one end by described the second end.
A kind of refrigeration system provided by the utility model, comprises compressor, indoor heat exchanger, throttling arrangement and outdoor heat exchanger, and described throttling arrangement is above-mentioned bidirectional throttling valve.
Compared with prior art, bidirectional throttling valve of the present utility model, form twin-stage throttle structure owing to being provided with the 3rd spool between the first spool and the second spool, system refrigerant produces a constant pressure drop after by first order throttling, and then by second level throttling, produce equally a constant pressure drop, therefore reduce the pressure differential of every grade of spool, avoid cavitation effect, optimized throttling noise and the effect increasing the service life thereby reach; And, can make to reach throttling needs through the refrigerant voltage drop value of two-stage spool by certain design.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the bidirectional throttling valve in one of them embodiment of the utility model;
Fig. 2 is the explosive view of the bidirectional throttling valve in Fig. 1;
Fig. 3 is the perspective view of the 3rd spool of the bidirectional throttling valve in Fig. 1.
Description of reference numerals: 1, union nut; 2, joint sealing cap; 3, the 3rd housing; 4, the first screen pack; 5, the first valve seat; 5a, the first slideway; 6, the first sealing ring; 7, the first spool; 7a, first segment discharge orifice; 7b, the first rib piece; 8, the first housing; 9, the 3rd spool; 9a, the 3rd throttle orifice; 9b, boss; 10, the second housing; 11, the second spool; 11a, second section discharge orifice; 11b, the second rib piece; 12, the second sealing ring; 13, the second valve seat; 13a, the second slideway; 14, the 4th housing; 15, tube connector; 16, annular groove; 17, first end; 18, the second end; 19, valve pocket; 20, the second screen pack.
The specific embodiment
Also the utility model is elaborated below with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in following embodiment and embodiment can combine mutually.
Figure 1 shows that the sectional structure schematic diagram of the bidirectional throttling valve in one of them embodiment of the utility model, the explosive view that Fig. 2 is bidirectional throttling valve.As depicted in figs. 1 and 2, bidirectional throttling valve comprises valve casing, the first valve seat 5, the second valve seat 13, the first spool 7, the second spool 11 and the 3rd spool 9, wherein, described valve casing has first end 17 and the second end 18, is provided with the valve pocket 19 that is through to this second end 18 from this first end 17 on this valve casing.For convenient for assembly and maintenance, valve casing in the present embodiment is preferably modular construction, it comprise the centre bore of hollow the 3rd housing 3, hollow the first housing 8, hollow the second housing 10 and hollow the 4th housing 14, the three housings 3, the first housing 8, the second housing 10 and the 4th housing 14 that connect successively by screw thread from first end 17 to second ends 18 be connected form described valve pocket 19.For convenient bidirectional choke valve is connected with exterior line, valve casing also comprises union nut 1, and union nut 1 and the 3rd housing 3 are threaded connection by one end of described first end 17, and are provided with joint sealing cap 2 between union nut 1 and the 3rd housing 3.
Described the first valve seat 5 by the first sealing ring 6 be sealingly fastened in described valve pocket 19 by described first end 17 places, on this first valve seat 5, be provided with the first slideway 5a.More preferably, described the first valve seat 5 is fixed between described the 3rd housing 3 and described the first housing 8.Described the second valve seat 13 is sealingly fastened in described the second end 18 places of leaning in described valve pocket 19 by the second sealing ring 12, is provided with the second slideway 13a on this second valve seat 13, and this second slideway 13a is connected with tube connector 15 by one end of described the second end 18.More preferably, described the second valve seat 13 is fixed between described the second housing 10 and described the 4th housing 14.
Described the first spool 7 is mounted slidably in described the first slideway 5a, is provided with along the axially extended first segment discharge orifice of valve casing 7a on this first spool 7, is provided with multiple along axially extended the first rib piece 7b of valve casing on the outer peripheral face of the first spool 7.Described the second spool 11 is mounted slidably in described the second slideway 13a, is provided with along the axially extended second section discharge orifice of valve casing 11a on this second spool 11, is provided with multiple along axially extended the second rib piece 11b of valve casing on the outer peripheral face of the second spool 11.
Described the 3rd spool 9 is arranged in the described valve pocket 19 between described the first spool 7 and described the second spool 11, is provided with along axially extended the 3rd throttle orifice 9a of valve casing on the 3rd spool 9.Inside and outside air-conditioning unit in machine on-line execute process, refrigerant is first by the 3rd spool 9, and then by the first spool 7 or the second spool 11, form twin-stage throttle structure, system refrigerant produces a constant pressure drop after by first order throttling, and then by second level throttling, produces equally a constant pressure drop, therefore reduce the pressure differential of every grade of spool, avoided cavitation effect; Meanwhile, the same constant pressure drop that produces after the liquid phase condensate of one-level throttling passes through second level throttling, its front and back stages system pressure drop value is design system demand voltage drop value.Preferably, make refrigerant force value after described the 3rd throttling spool be greater than at that time refrigerant evaporation saturation pressure value at temperature by designing the 3rd throttle orifice, can avoid better like this cavitation effect.
Preferably, as shown in Figure 3, the quantity of described the 3rd throttle orifice 9a is more than two, for different throttling occasions, selects the quantity of the 3rd throttle orifice 9a.Further, all described the 3rd throttle orifice 9a are along the circumferential direction uniform centered by the center line of described the 3rd spool 9, produce low-frequency noise with pipe-line system eddy current after avoiding throttling.Preferably, described the 3rd spool 9 is provided with radially outward outstanding boss 9b by one end of described first end 17, is provided with annular groove 16 on the inwall of described valve casing, and described boss 9b is positioned at described annular groove 16.For convenient for assembly and maintenance, described the first housing 8 centre bores are step by one end of described the second end 18, described the second housing 10 centre bores are step by one end of described first end 17, described the second housing 10 screws in described the first housing 8 centre bores by one end of described the second end 18 by one end of described first end 17, forms described annular groove 16.Preferably, axial along described valve casing, the width of described annular groove 16 is greater than the width of described boss 9b, is the consideration of fit-up gap herein, if the sealing of considering can increase sealing ring for sealing in groove 16.
Preferably, bidirectional throttling valve also comprises the first screen pack 4 and the second screen pack 20, described the first screen pack 4 is arranged at described the first slideway 5a one end by described first end 17, and described the second screen pack 20 is arranged at described the second slideway 13a one end by described the second end 18.
In another embodiment of the utility model, also provide a kind of refrigeration system, comprised compressor, indoor heat exchanger, throttling arrangement and outdoor heat exchanger, described throttling arrangement is the described bidirectional throttling valve in above-described embodiment.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims (10)

1. a bidirectional throttling valve, comprising:
Valve casing, has first end and the second end, is provided with the valve pocket that is through to this second end from this first end on this valve casing;
The first valve seat, be sealingly fastened in described valve pocket by described first end place, on this first valve seat, be provided with the first slideway;
The second valve seat, is sealingly fastened in described the second end place of leaning in described valve pocket, on this second valve seat, is provided with the second slideway;
The first spool, is mounted slidably in described the first slideway, is provided with along the axially extended first segment discharge orifice of valve casing on this first spool;
The second spool, is mounted slidably in described the second slideway, is provided with along the axially extended second section discharge orifice of valve casing on this second spool;
It is characterized in that, also comprise:
The 3rd spool, is arranged in the described valve pocket between described the first spool and described the second spool, is provided with along axially extended the 3rd throttle orifice of valve casing on the 3rd spool.
2. bidirectional throttling valve according to claim 1, is characterized in that, the refrigerant force value after described the 3rd throttling spool is greater than at that time refrigerant evaporation saturation pressure value at temperature.
3. bidirectional throttling valve according to claim 1 and 2, is characterized in that, the quantity of described the 3rd throttle orifice is more than two.
4. bidirectional throttling valve according to claim 3, is characterized in that, all described the 3rd throttle orifices are along the circumferential direction uniform centered by the center line of described the 3rd spool.
5. bidirectional throttling valve according to claim 1 and 2, it is characterized in that, described the 3rd spool is provided with radially outward outstanding boss by one end of described first end, on the inwall of described valve casing, is provided with annular groove, and described boss is positioned at described annular groove.
6. bidirectional throttling valve according to claim 5, is characterized in that, axial along described valve casing, and the width of described annular groove is greater than the width of described boss.
7. bidirectional throttling valve according to claim 5, it is characterized in that, described valve casing comprises hollow the first housing and hollow the second housing that connect successively by screw thread from described first end to described the second end, described the first housing centre bore is step by one end of described the second end, described the second housing centre bore is step by one end of described first end, described the 3rd spool is loaded on described the second housing centre bore by one end of described first end, between described the second housing and described the first housing, forms described annular groove.
8. bidirectional throttling valve according to claim 7, it is characterized in that, described valve casing also comprises hollow the 3rd housing and hollow the 4th housing, described the 3rd housing and described the first housing are threaded connection by one end of described first end, described the first valve seat is fixed between described the 3rd housing and described the first housing, described the 4th housing and described the second housing are threaded connection by one end of described the second end, and described the second valve seat is fixed between described the second housing and described the 4th housing.
9. bidirectional throttling valve according to claim 1, it is characterized in that, also comprise the first screen pack and the second screen pack, described the first screen pack is arranged at described the first slideway one end by described first end, and described the second screen pack is arranged at described the second slideway one end by described the second end.
10. a refrigeration system, comprises compressor, indoor heat exchanger, throttling arrangement and outdoor heat exchanger, it is characterized in that, described throttling arrangement is bidirectional throttling valve as in one of claimed in any of claims 1 to 9.
CN201320876697.XU 2013-12-25 2013-12-25 Two-way throttling valve and refrigeration system with same Active CN203672005U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320876697.XU CN203672005U (en) 2013-12-25 2013-12-25 Two-way throttling valve and refrigeration system with same

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Application Number Priority Date Filing Date Title
CN201320876697.XU CN203672005U (en) 2013-12-25 2013-12-25 Two-way throttling valve and refrigeration system with same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104748455A (en) * 2013-12-25 2015-07-01 珠海格力电器股份有限公司 Two-way throttle valve and refrigeration system with throttle valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104748455A (en) * 2013-12-25 2015-07-01 珠海格力电器股份有限公司 Two-way throttle valve and refrigeration system with throttle valve
CN104748455B (en) * 2013-12-25 2018-01-19 珠海格力电器股份有限公司 Bidirectional throttling valve and there is its refrigeration system

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