CN109237846A - A kind of electric expansion valve - Google Patents
A kind of electric expansion valve Download PDFInfo
- Publication number
- CN109237846A CN109237846A CN201710558665.8A CN201710558665A CN109237846A CN 109237846 A CN109237846 A CN 109237846A CN 201710558665 A CN201710558665 A CN 201710558665A CN 109237846 A CN109237846 A CN 109237846A
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- Prior art keywords
- valve
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- valve head
- poppet shaft
- axis connection
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- 238000003801 milling Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003519 ventilatory effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of electric expansion valves, comprising: valve component, the valve component bottom are arranged the valve seat with valve port, are provided with valve head corresponding with the valve port of the valve seat in the valve component；The valve head is through-hole structure and third cavity is arranged in valve head bottom；Axis connection cap is arranged in the poppet shaft being slidably connected with the valve head inner ring, the poppet shaft top；The axis connection cap outer ring seal is slidably connected spring pocket；In the poppet shaft and it is located at axis connection cap lower part connection elastic element；The elastic element that connects is arranged in the valve head；First cavity is set at the top of the valve head；The valve head outer ring seal is slidably connected spring pocket；Attaching nut's component at the top of the spring pocket；Wherein, the balance channel of connection the first cavity and third cavity is made of compensating groove.The structure effectively converts turn-milling cutting for poppet shaft inner hole drilling and turning, reduces poppet shaft trial-production difficulty and cost, easy to process, long service life.
Description
Technical field
The present invention relates to a kind of electric expansion valves.
Background technique
Electric expansion valve breaches the concept of throttle mechanism as a kind of novel control element already, it is refrigeration
Important link and the refrigeration system optimization of system intelligent are able to the important means and guarantee really realized, and refrigeration system
The symbol of system electromechanical, has been applied in more and more fields.
Two kinds of electric expansion valves (Direct Action Type and gear type) of existing valve head self-balance structure, valve head balance channel include
In poppet shaft 1 ', the first balance hole 11 ' and the second balance hole 12 ', the poppet shaft 1 ' is close to that end outer wall of valve port 2 ' and valve
First 3 ' inner hole processes the first balance hole 11 ' in the axis center of poppet shaft 1 ', and side wall processes the second balance hole 12 '.Because of valve head
3 ' self-balance structure working characteristics need, and valve head 3 ' need to be consistent with valve port diameter mounted in spring pocket/seal receptacle part outer diameter, simultaneously
Valve head assembly need to be provided with the space of installation sealing element or elastic element, cause poppet shaft 1 ' for cooperating outside that one end of valve head 3 '
The size-constrained system of diameter.Therefore when valve port diameter becomes smaller, especially when valve port diameter is 4.0mm and with lower relative aperture, there are the first balances
Hole 11 ' and 12 ' hardly possible of the second balance hole process and can not process situation, and two balance holes processed are often led because too small
The defects of causing voltage stabling control to extend, is unable to satisfy middle small dimension self-balancing product line Expansion development demand.
Summary of the invention
The object of the present invention is to provide a kind of electric expansion valves, to solve current electric expansion valve, especially small-bore valve,
The problem of poppet shaft processing the first balance hole and the second balance hole difficulty.
In order to solve the above technical problems, providing a kind of electric expansion valve as of the invention, comprising:
The valve seat with valve port is arranged in valve component, the valve component bottom, be provided in the valve component with it is described
The corresponding valve head of the valve port of valve seat；The valve head is through-hole structure and third cavity is arranged in valve head bottom；
Axis connection cap is arranged in the poppet shaft being slidably connected with the valve head inner ring, the poppet shaft top；The axis connection
Cap outer ring seal is slidably connected spring pocket；In the poppet shaft and it is located at axis connection cap lower part connection elastic element；It is described to connect bullet
Property element be arranged in the valve head；First cavity is set at the top of the valve head；
The valve head outer ring seal is slidably connected spring pocket；Attaching nut's component at the top of the spring pocket；Wherein,
In the poppet shaft and it is located at axis connection cap lower part setting compensating groove, connection described first is made of the compensating groove
The balance channel of cavity and third cavity.
Further, the compensating groove be turn-milling cutting at single slot structure or multi-groove structure.
Further, axis connection cap bottom is connect by spring pad with the elastic element, and first cavity is set
It sets between at the top of axis connection cap bottom and the valve head；
The top connecting screw of the axis connection cap；The screw rod is installed over the nut component, the spring pocket outer ring, institute
It states and constitutes the second cavity in valve head outer ring and the valve component.
Further, first cavity is arranged between the axis connection cap and nut assembly；
Balance hole is set on the axis connection cap, the balance hole be connected to compensating groove composition first cavity and
The balance channel of third cavity；
The second cavity is constituted in the spring pocket outer ring, the valve head outer ring and the valve component.
Further, first seal is set between the spring pocket inner ring and the valve head outer ring.
Further, the compensating groove is the turnning and milling list slot structure for being provided with the poppet shaft lower part；The poppet shaft bottom
Tabletting installation axle is arranged in portion；
Through hole socket is set in the valve head, and after the poppet shaft is inserted into the through hole socket, the elastic element bottom is stuck in
At the top of the through hole socket；Tabletting is fixedly mounted in the poppet shaft bottom tabletting installation axle under the through hole socket.
Further, axial direction setting of the balance hole along the axis connection cap；The balance hole includes multiple.
Further, the compensating groove is the turnning and milling list slot structure or spline type structure being provided in the poppet shaft.
Further, second seal is set between the spring pocket inner ring and the valve head outer ring.
Compared with prior art, beneficial aspects of the invention are:
A kind of electric expansion valve provided by the invention, comprising: valve component, the valve component bottom are arranged with valve port
Valve seat is provided with valve head corresponding with the valve port of the valve seat in the valve component；The valve head is for through-hole structure and in valve
Third cavity is arranged in head bottom；Axis connection cap is arranged in the poppet shaft being slidably connected with the valve head inner ring, the poppet shaft top；
The axis connection cap outer ring seal is slidably connected spring pocket；In the poppet shaft and it is located at axis connection cap lower part connection elasticity member
Part；The elastic element that connects is arranged in the valve head；First cavity is set at the top of the valve head；The valve head outer ring seal is sliding
Dynamic connecting spring set；Attaching nut's component at the top of the spring pocket；Wherein, the first cavity of connection and third chamber are made of compensating groove
The balance channel of body.The structure effectively converts turn-milling cutting for poppet shaft inner hole drilling and turning, reduces poppet shaft and manufactures experimently difficulty
And cost, easy to process, long service life.
Detailed description of the invention
Fig. 1 diagrammatically illustrates the structural schematic diagram of existing heavy caliber electric expansion valve；
Fig. 2 diagrammatically illustrates the decomposed structural schematic diagram of the electric expansion valve in the embodiment of the present invention one；
Fig. 3 diagrammatically illustrates the knot of each cavity in the embodiment of the present invention one after electronic expansion valve portion assembling
Structure schematic diagram；
Fig. 4 diagrammatically illustrates the structural schematic diagram in the embodiment of the present invention one after electronic expansion valve portion assembling；
Fig. 5 diagrammatically illustrates the schematic cross-sectional view in the embodiment of the present invention one after electric expansion valve assembling；
Fig. 6 diagrammatically illustrates the structural schematic diagram of poppet shaft in the embodiment of the present invention one；
Fig. 7 diagrammatically illustrates the decomposed structural schematic diagram of the electric expansion valve in the embodiment of the present invention two；
Fig. 8 diagrammatically illustrates the knot of each cavity in the embodiment of the present invention two after electronic expansion valve portion assembling
Structure schematic diagram；
Fig. 9 diagrammatically illustrates the structural schematic diagram in the embodiment of the present invention two after electronic expansion valve portion assembling；
Figure 10 diagrammatically illustrates the schematic cross-sectional view in the embodiment of the present invention two after electric expansion valve assembling；
Figure 11 diagrammatically illustrates the structural schematic diagram of poppet shaft in the embodiment of the present invention two；
Figure 12 diagrammatically illustrates the structural schematic diagram at another visual angle of poppet shaft in the embodiment of the present invention two.
Appended drawing reference in figure: 1, valve component；11, valve port；2, valve head；21, third cavity；22, the first cavity；23, lead to
Hole seat；24, the second cavity；3, poppet shaft；31, axis connection cap；32, compensating groove；33, balance hole；34, tabletting installation axle；35, it presses
Piece；4, spring pocket；41, first seal；41, second seal；5, screw rod；6, nut assembly；7, elastic element；71, spring
Pad.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Embodiment one
It please refers to shown in Fig. 2-Fig. 6, the embodiment of the present invention provides a kind of electric expansion valve, the electric expansion valve, comprising: valve
Body component 1 and poppet shaft 3,1 bottom of valve component are arranged the valve seat 12 with valve port 11, are provided with and valve seat 12 in valve component 1
The corresponding valve head 2 of valve port；Valve head is through-hole structure and third cavity 21 is arranged in valve head bottom；Poppet shaft 3 and 2 inner ring of valve head
It is slidably connected, axis connection cap 31 is set at the top of poppet shaft 3；31 outer ring seal of axis connection cap is slidably connected spring pocket 4；Poppet shaft
On 3 and it is located at 31 lower part of axis connection cap connection elastic element 7；Elastic element 7 is connect to be arranged in valve head 2；Is arranged at the top of valve head 2
One cavity 22；2 outer ring seal of valve head is slidably connected spring pocket 4；4 top attaching nut's component 6 of spring pocket；Wherein, in poppet shaft 3
And be located at 31 lower part of axis connection cap and compensating groove 32 is set, the flat of the first cavity 22 of connection and third cavity 21 is made of compensating groove 32
Weighing apparatus channel.
Turn-milling cutting effectively is converted by 3 inner hole drilling and turning of poppet shaft, poppet shaft 3 is reduced and manufactures experimently difficulty and cost, and
Guarantee balance channel ventilatory capacity, reduce voltage stabling control, and then medium and small specification product valve head pressure at two ends balance is effectively ensured, into one
Step reduces rotor loading power, improves exemplar valve opening ability and can reduce same specification product rotor and coil space size, realizes low
Energy consumption.
By the way that the compensating groove of different structure is arranged in poppet shaft 3, the structure of balance hole is replaced by compensating groove 3, especially
It is easy to process suitable for small-bore electric expansion valve, long service life.
Wherein, compensating groove 32 be turn-milling cutting at single slot structure or multi-groove structure.By by hole drill in former poppet shaft 3
The trench structure for changing into turn-milling cutting is processed in boring, reduces the manufacture difficulty of balance channel in poppet shaft 3, and manufacturing cost
It reduces.
31 bottom of axis connection cap is connect by spring pad 71 with elastic element 7, and the first cavity 22 is arranged in axis connection cap 31
Between 2 top of bottom and valve head；The top connecting screw 5 of axis connection cap 31；Screw rod 5 is mounted on nut assembly 6, spring pocket 4
The second cavity 24 is constituted in outer ring, 2 outer ring of valve head and valve component 1.
Since axis connection cap outer ring seal is slidably connected spring pocket, so, to make valve head both ends pressure balance, by first
Cavity is arranged between valve head and axis connection cap, is connected to third cavity by balance channel with the first cavity, keeps valve
Head pressure at two ends balance.First seal 41 is set between 3 outer ring of 4 inner ring of spring pocket and valve head.
Compensating groove 32 is the turnning and milling list slot structure for being provided with 3 lower part of poppet shaft；Tabletting installation axle is arranged in 3 bottom of poppet shaft
34；Through hole socket 23 is set in valve head 2, and after poppet shaft 3 is inserted into through hole socket 23,71 bottom of elastic element is stuck in 23 top of through hole socket；
Tabletting 35 is fixedly mounted in the 3 bottom tabletting installation axle 34 of poppet shaft under through hole socket 23.
The structural principle of the embodiment of the present invention one are as follows: as shown in Fig. 2-Fig. 6, the valve head self-balance structure of the electric expansion valve
Equipped with balance channel, which includes the compensating groove 32 being arranged in poppet shaft 3, and compensating groove 32 is arranged under poppet shaft 3
In the installation axle of side, after the inner hole and 3 installation axle of poppet shaft of valve head 2 cooperate, refrigerant can pass through compensating groove 32 and 2 inner hole of valve head
Between gap enter in the first cavity 22 of valve body.Therefore when valve closes entirely, the first cavity 22 can pass through with 21 refrigerant of third cavity
Balance channel perforation；It is tightly connected between spring pocket 4 and valve component, first seal 41 is set between valve head 2 and spring pocket 4,
2 guide section of valve head and 4 pilot hole of spring pocket guiding cooperate, thus form guiding and sealing function, therefore the second cavity between the two
24 refrigerants are not penetrated through with the first cavity 22；4 pilot hole internal diameter of spring pocket is consistent with 11 diameter of valve port；To sum up, it is ensured that 2 both ends of valve head
Refrigerant pressure is consistent, and effective active area is identical, fundamentally solves differential pressure problem, improves product valve opening ability.
In addition, in the present embodiment poppet shaft 3 can Vehicle Processing, then groove milling forms compensating groove；Poppet shaft 3 can integrated powder smelting
Gold forms compensating groove 32 at the special-shaped outer wall such as spline；
The advantages of the present embodiment includes: that poppet shaft special-shaped external wall can effectively be solved existing poppet shaft inner hole and side opening
When difficult processing problems, especially small-bore valve, it is long there are voltage stabling control the problems such as；Poppet shaft turn-milling cutting or powder metallurgy processing
At low cost at compensating groove, the processing is simple and qualification rate is high；Convenient for the expansion of medium and small specification series；
As shown in Fig. 2-Fig. 6, electric expansion valve working principle of the present invention: electric expansion valve is by valve component and coil group
At valve component includes needle component, rotor part, screw part and valve part；Wherein, valve part includes valve head 2
And refrigerant balance channel engaged therewith and interior leakage sealing structure.When work, rotor is revolved under the driving of external coil
Turning, passes torque to screw rod 5, screw rod 5 converts linear motion for rotary motion with 6 screw thread side effect of nut assembly, thus
It pushes valve head 2 and its component to make axial operation, realizes switch valve；Because valve head balance channel acts on, it is ensured that valve head 2 is each in valve body
Cavity internal pressure balance, improves exemplar valve opening ability.
Embodiment two
It please refers to shown in Fig. 7-Figure 12, the embodiment of the present invention provides a kind of electric expansion valve, the electric expansion valve, comprising:
The valve seat 12 with valve port 11 is arranged in valve component 1 and poppet shaft 3,1 bottom of valve component, is provided in valve component 1 and valve seat
The corresponding valve head 2 of 12 valve port；Valve head is through-hole structure and third cavity 21 is arranged in valve head bottom；In poppet shaft 3 and valve head 2
What ring was slidably connected, axis connection cap 31 is set at the top of poppet shaft 3；31 outer ring seal of axis connection cap is slidably connected spring pocket 4；Spool
On axis 3 and it is located at 31 lower part of axis connection cap connection elastic element 7；Elastic element 7 is arranged in valve head 2；Is arranged at the top of valve head 2
One cavity 22；2 outer ring seal of valve head is slidably connected spring pocket 4；4 top attaching nut's component 6 of spring pocket；Wherein, in poppet shaft 3
And be located at 31 lower part of axis connection cap and compensating groove 32 is set, the flat of the first cavity 22 of connection and third cavity 21 is made of compensating groove 32
Weighing apparatus channel.
Turn-milling cutting effectively is converted by 3 inner hole drilling and turning of poppet shaft, poppet shaft 3 is reduced and manufactures experimently difficulty and cost, and
Guarantee balance channel ventilatory capacity, reduce voltage stabling control, and then medium and small specification product valve head pressure at two ends balance is effectively ensured, into one
Step reduces rotor loading power, improves exemplar valve opening ability and can reduce same specification product rotor and coil space size, realizes low
Energy consumption.
By the way that the compensating groove of different structure is arranged in poppet shaft 3, the structure of balance hole is replaced by compensating groove 3, especially
It is easy to process suitable for small-bore electric expansion valve, long service life.
Wherein, compensating groove 32 be turn-milling cutting at single slot structure or multi-groove structure.By by hole drill in former poppet shaft 3
The trench structure for changing into turn-milling cutting is processed in boring, reduces the manufacture difficulty of balance channel in poppet shaft 3, and manufacturing cost
It reduces.
First cavity 22 is arranged between axis connection cap 31 and nut assembly 6；Balance hole 33 is set on axis connection cap 31, is put down
Weighing apparatus hole 33 constitutes the balance channel for being connected to the first cavity 22 and third cavity 21 with compensating groove 32；Outside 4 outer ring of spring pocket, valve head 2
The second cavity 24 is constituted in ring and valve component 1.
Axial direction setting of the balance hole 33 along axis connection cap 31；Balance hole 33 includes multiple.Compensating groove 32 is to be provided with spool
Turnning and milling list slot structure or spline type structure on axis 3.Second seal 42 is set between 3 outer ring of 4 inner ring of spring pocket and valve head.
The structural principle of the embodiment of the present invention two are as follows: as shown in Fig. 7-Figure 12, the valve head self-balancing knot of the electric expansion valve
Structure is equipped with balance channel, which includes the compensating groove 32 and balance hole 33 being arranged in poppet shaft 3, and compensating groove 32 is arranged
In the installation axle of 3 downside of poppet shaft, balance hole 33 is arranged on the axis connection cap 31 at 3 top of poppet shaft, when the inner hole of valve head 2
After the cooperation of 3 installation axle of poppet shaft, refrigerant can enter valve body by gap between 2 inner hole of balance hole 33, compensating groove 32 and valve head
In first cavity 22.Therefore when valve closes entirely, the first cavity 22 can be penetrated through with 21 refrigerant of third cavity by balance channel；Spring
It is tightly connected between set 4 and valve component, second seal 42,2 guide section of valve head and spring is set between valve head 2 and spring pocket 4
The guiding cooperation of 4 pilot holes is covered, thus forms guiding and sealing function, therefore 24 refrigerant of the second cavity and the first cavity 22 between the two
It does not penetrate through；4 pilot hole internal diameter of spring pocket is consistent with 11 diameter of valve port；To sum up, it is ensured that 2 both ends refrigerant pressure of valve head is consistent, and has
It is identical to imitate active area, fundamentally solves differential pressure problem, improves product valve opening ability.
Its principle is referred to the description of embodiment one, and details are not described herein.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of electric expansion valve characterized by comprising
Valve component (1), the valve component bottom are arranged the valve seat (12) with valve port (11), set in the valve component (1)
It is equipped with valve head (2) corresponding with the valve port of the valve seat (12)；The valve head is through-hole structure and third is arranged in valve head bottom
Cavity (21)；
Axis connection cap (31) are arranged in the poppet shaft (3) being slidably connected with the valve head (2) inner ring, poppet shaft (3) top；Institute
It states axis connection cap (31) outer ring seal and is slidably connected spring pocket (4)；On the poppet shaft (3) and it is located at axis connection cap (31) lower part
It connects elastic element (7)；It is described to connect elastic element (7) setting in the valve head (2)；Setting first at the top of the valve head (2)
Cavity (22)；
Valve head (2) outer ring seal is slidably connected spring pocket (4)；Attaching nut's component (6) at the top of the spring pocket (4)；Its
In,
On the poppet shaft (3) and it is located at axis connection cap (31) lower part setting compensating groove (32), is made of the compensating groove (32)
It is connected to the balance channel of first cavity (22) and third cavity (21).
2. electric expansion valve according to claim 1, which is characterized in that the compensating groove (32) be turn-milling cutting at list
Slot structure or multi-groove structure.
3. electric expansion valve according to claim 2, which is characterized in that axis connection cap (31) bottom passes through spring pad
(71) it is connect with the elastic element (7), first cavity (22) is arranged in axis connection cap (31) bottom and the valve
Between at the top of head (2)；
The top connecting screw (5) of the axis connection cap (31)；The screw rod (5) is mounted on nut assembly (6), the spring
It covers in (4) outer ring, the valve head (2) outer ring and the valve component (1) and constitutes the second cavity (24).
4. electric expansion valve according to claim 2, which is characterized in that the first cavity (22) setting connects in the axis
It connects between cap (31) and nut assembly (6)；
Balance hole (33) are set on the axis connection cap (31), the balance hole (33) constitutes with the compensating groove (32) and is connected to institute
State the balance channel of the first cavity (22) and third cavity (21)；
The second cavity (24) are constituted in spring pocket (4) outer ring, the valve head (2) outer ring and the valve component (1).
5. electric expansion valve according to claim 3, which is characterized in that spring pocket (4) inner ring and the valve head (3)
First seal (41) are set between outer ring.
6. electric expansion valve according to claim 5, which is characterized in that the compensating groove (32) is to be provided with the spool
The turnning and milling list slot structure of axis (3) lower part；Tabletting installation axle (34) are arranged in poppet shaft (3) bottom；
Through hole socket (23) are set in the valve head (2), after the poppet shaft (3) is inserted into the through hole socket (23), the elasticity member
Part (71) bottom is stuck at the top of the through hole socket (23)；The poppet shaft (3) bottom tabletting peace under the through hole socket (23)
It fills and tabletting (35) is fixedly mounted on axis (34).
7. electric expansion valve according to claim 4, which is characterized in that the balance hole (33) is along the axis connection cap
(31) axial setting；The balance hole (33) includes multiple.
8. electric expansion valve according to claim 7, which is characterized in that the compensating groove (32) is to be provided with the spool
Turnning and milling list slot structure or spline type structure on axis (3).
9. electric expansion valve according to claim 8, which is characterized in that spring pocket (4) inner ring and the valve head (3)
Second seal (42) are set between outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558665.8A CN109237846A (en) | 2017-07-10 | 2017-07-10 | A kind of electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558665.8A CN109237846A (en) | 2017-07-10 | 2017-07-10 | A kind of electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109237846A true CN109237846A (en) | 2019-01-18 |
Family
ID=65083271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710558665.8A Pending CN109237846A (en) | 2017-07-10 | 2017-07-10 | A kind of electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135021A1 (en) * | 2020-12-26 | 2022-06-30 | 浙江盾安人工环境股份有限公司 | Valve core assembly and electronic expansion valve having same |
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| CN204630192U (en) * | 2015-04-17 | 2015-09-09 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5364066A (en) * | 1993-07-15 | 1994-11-15 | Sporlan Valve Company | Dual port valve with stepper motor actuator |
| CN103890505A (en) * | 2011-09-26 | 2014-06-25 | 丹佛斯公司 | A flow control valve with pressure balancing |
| CN203809723U (en) * | 2014-04-21 | 2014-09-03 | 天津诺威流体控制科技有限公司 | Balanced type adjusting valve |
| CN204042031U (en) * | 2014-08-14 | 2014-12-24 | 重庆海王仪器仪表有限公司 | The balanced hole structure of valve body |
| CN204630192U (en) * | 2015-04-17 | 2015-09-09 | 浙江盾安禾田金属有限公司 | A kind of electric expansion valve |
| CN205278476U (en) * | 2015-10-20 | 2016-06-01 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| CN206268472U (en) * | 2016-10-21 | 2017-06-20 | 浙江盾安机械有限公司 | A kind of electric expansion valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135021A1 (en) * | 2020-12-26 | 2022-06-30 | 浙江盾安人工环境股份有限公司 | Valve core assembly and electronic expansion valve having same |
| JP7472401B2 (en) | 2020-12-26 | 2024-04-22 | 浙江盾安人工環境股▲ふん▼有限公司 | Valve core assembly and electronic expansion valve having the same |
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