CN106641430A - Novel electronic expansion valve - Google Patents
Novel electronic expansion valve Download PDFInfo
- Publication number
- CN106641430A CN106641430A CN201610889497.6A CN201610889497A CN106641430A CN 106641430 A CN106641430 A CN 106641430A CN 201610889497 A CN201610889497 A CN 201610889497A CN 106641430 A CN106641430 A CN 106641430A
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- China
- Prior art keywords
- groove
- bearing block
- valve
- wall
- electronic expansion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000030279 gene silencing Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 19
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- 238000005984 hydrogenation reaction Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000036541 health Effects 0.000 abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 3
- 238000002955 isolation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
-
- 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
- F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/91—Valves
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a novel electronic expansion valve which comprises a valve seat; a bearing pedestal is arranged on the valve seat, and is matched with a valve rod; a vertically perforated through groove is formed in the valve seat; the matched bearing pedestal is inserted into the through groove; the valve rod is arranged in the bearing pedestal; a matched straight pipe is welded at the bottom end of the through groove; a side hole communicating with the through groove is formed in the external wall of the valve seat; a matched elbow pipe is welded at the side hole; an isolation sleeve is welded on the external wall of the valve seat; and a magnetic rotor is arranged at the outer part of the upper end of the valve rod. The novel electronic expansion valve further comprises a silencing device. With the adoption of the novel electronic expansion valve, a flow velocity of gas can be reduced effectively, the noise is reduced, and a certain health guarantee is provided for the life of people.
Description
Technical field
The present invention relates to a kind of novel electronic expansion valve.
Background technology
At present, electric expansion valve both domestic and external is various in style, and architectural feature is each different, but their throttle structure is all
It is similar, mainly cone valve structure.Valve rod inside electric expansion valve works as electronics when axially moving toward fully closed direction
Needle inside expansion valve contacts with following valve opening, and valve rod starts to produce an axial compressive force to needle.Work as electronic expansion
Under full off state, valve rod reaches maximum to valve with needle axial compressive force produced each other, this is because needle is fully closed
When under state, remain static, the spring of stem internal is subject to the downward pressure of valve rod, is compressed spring；Work as spring
Decrement to certain degree when, the pressure that needle is subject to reaches maximum；At the same time, the spring of stem internal is produced to valve rod
A raw elastic force（The reverse axial compressive force that i.e. needle is produced to valve rod）, now, between valve rod external screw thread and valve body internal thread
Frictional force becomes big.When air inlet pipe is passed through gases at high pressure, and electric expansion valve, when descending in off position, needle seals valve opening,
Now the high pressure of valve opening upper end defines a positive differential pressure so that gases at high pressure generate one to needle more than the low pressure of lower end
Individual axial compressive force.Therefore, the generation of axial compressive force, causes between electric expansion valve inside valve rod external screw thread and valve body internal thread
Frictional force becomes big, more likely because the driving force that stepper motor is produced is less than reaction torque, causes electric expansion valve clamping stagnation.
Needle in this cone valve structure and valve opening below, have certain gap.Due to depositing for these gaps
Quantity of gas leakage is being caused to increase.
Also because this cone valve structure, to the discharge characteristic of electric expansion valve, its linearity is undesirable, i.e., in condition
Necessarily（Pressure reduction is certain）In the case of, flow is not proportional relation to aperture, but into curved line relation, close to secondary song
Line.This discharge characteristic into conic section is unfavorable for the precise control of flow, because for the aperture for changing equal number, stream
The change of amount is simultaneously differed, so the difficulty of control is very big, can not be to the precise control of flow.Based on this, want to improve number
The discharge characteristic of flow control amount, must just break through the inherent shortcoming of cone valve structure, electric expansion valve is innovated, and invention is a kind of more
Rational throttle structure.Rational throttle structure can inherently change the flow-adjusting characteristics of numerical control flux, so as to improve
The performance of numerical control flux, makes control meet system requirements, reaches the not only accurate but also effect of energy-conservation.
Further, when electric expansion valve is during valve opening, with the increase of aperture, gas flow is consequently increased.Wherein,
The sound that the port of export sends also becomes to grow louder and stronger.It is known that electric expansion valve is the flow control valve in refrigeration system, than
Such as, application of the electric expansion valve in the middle of air-conditioning.Air-conditioning is now indispensable household electrical appliances in people's life, because air-conditioning exists
In operation, noise is there is all the time, the life and health to people has certain impact.In this regard, abate the noise, to improving people
Quality of the life and fitness provide a kind of guarantee.In view of this, the present inventor improves with regard to this proposition, to meet on market
Demand.
The content of the invention
The invention aims to provide a kind of weak point and technology that can solve the problem that and referred in above-mentioned background technology
The novel electronic expansion valve of problem.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of novel electronic expansion valve, including valve seat, are provided with bearing block on the valve seat, and match valve rod on the bearing block,
The groove of up/down perforation is formed on the valve seat, the groove is inserted into the bearing block for matching, is provided with the bearing block
Valve rod, in the straight tube that the bottom welding of the groove matches, is provided with the side communicated with the groove on the valve seat outer wall
Hole, the bend pipe that the lateral aperture welding matches, welds a disrance sleeve, outside the valve rod upper end on the outer wall of the valve seat
Portion is provided with magnet rotor；It is characterized in that：Further comprises silencing means.
Further setting is done to the present invention, the silencing means is a noise reduction web plate, and the noise reduction web plate is located at described straight
Between pipe and the groove.
Further setting is done to the present invention, the material that described noise reduction web plate is adopted is brass or red copper, into cellular.
Further setting is done to the present invention, coaxial mounted spacing quiet spring is provided with the outer wall of the bearing block, in institute
State the dynamic spring of the embedded limited location of helicla flute of spacing quiet spring；The resistance spring end of the magnet rotor is laterally round with one of the spacing dynamic spring
Post is mutually touched, and positioning hole groove is provided with the upper port outer wall of the bearing block, and the positioning hole groove is used to fix described spacing
The traverse furrow of quiet spring.
Further setting is done to the present invention, the O-shaped hole placed for noise reduction web plate is formed at the middle and lower part of the groove.
Further setting is done to the present invention, cannelure is provided with the upper port outer wall of the valve seat, under the cannelure
Side is provided with the location hole for running through；Turn is provided with the cannelure.
Further setting is done to the present invention, through hole, shape on the lower port inwall of the through hole are formed on the bearing block
Into circular groove, in the circular groove polytetrafluoroethylene sealing gasket is provided with；Formed on the outer wall of the bearing block lower end and communicated with through hole
Waist type valve opening, the center line of the waist type valve opening is consistent with the vertical center line of the lateral aperture, on the waist type valve opening
Side is provided with an annular seal groove, and hydrogenation nitrile rubber sealing ring is provided with the annular seal groove；The bearing block middle part is outer
The the first horizontal hole post communicated with through hole is formed on wall, the first horizontal hole post is for 2 and on the same line.
Further setting is done to the present invention, the valve rod includes the body of rod, and the lower end of the body of rod forms interior axial hole post, institute
State and formed on the outer wall in the middle part of interior axial hole post seal groove and annular groove, formed and institute on the outer wall of the interior axial hole post bottom
The second horizontal hole post that interior axial hole post is communicated is stated, the second horizontal hole post is for 2 and on the same line, described
External thread section is formed on outer wall in the middle part of the body of rod.
Compared with the prior art, the present invention has following beneficial effect：
Silencing means, that is, noise reduction web plate are present invention comprises, the flow velocity of gas can be effectively blocked, is reduced and is made an uproar
Sound, the life to people provides certain health care.It is simultaneously of the invention on this basis by improving valve body and bearing block,
Horizontal axis hole is provided with valve body and bearing block, the pressure phase of electric expansion valve internal pressure and outlet side is realized
Deng, eliminate axial compressive force of the gas to valve rod, while be provided with 2 road sealing grooves in valve outer wall, considerably increase each other it
Between sealing, it is therefore prevented that the increase of quantity of gas leakage, and circular groove is provided with bearing block, poly- four are provided with the circular groove
PVF sealing gasket so that good sealing is formed between body base and polytetrafluoroethylene sealing gasket, it is therefore prevented that gas is leaked
The increase of amount, while two annular grooves above stem bottom, improve the control accuracy of flow output.
The present invention, in the case where keeping overall appearance structure constant, can be reduced during use by the technical program
Noise, the axial compressive force that valve rod is subject to can not only be eliminated, and accomplish good sealing effectiveness, it is therefore prevented that quantity of gas leakage
Increase, while other serial electric expansion valves can be transformed into, at present, may be only available for the electric expansion valve of 11 kinds of series,
So as to cause financial cost to substantially reduce, environmental protection.
Description of the drawings
The present invention is elaborated with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of valve seat part in the present invention.
Fig. 3 is the profile of bottom bracket of the present invention.
Fig. 4 is profile of this user in middle valve body.
Specific embodiment
Below by embodiment, and accompanying drawing is combined, technical scheme is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the new a kind of novel electronic expansion valve of the present invention, including valve seat 1, described
Valve seat 1 is provided with bearing block 2, matching valve rod 3 on the bearing block 2, and the groove 11 of up/down perforation is formed on the valve seat 1,
The groove 11 is inserted into the bearing block 2 for matching, and in the bearing block 2 valve rod 3 is provided with, and welds in the bottom of the groove 11
The straight tube 4 of matching, is provided with the lateral aperture 12 communicated with the groove 11 on the outer wall of the valve seat 1, and the lateral aperture 12 is welded
The bend pipe 5 of matching, on the outer wall of 1, the valve disrance sleeve 6 is welded, and outside the upper end of the valve rod 3 magnet rotor is provided with
7；It is characterized in that：Silencing means is further comprises, the silencing means is a noise reduction web plate 8, and the noise reduction web plate 8 is located at described
Between straight tube 4 and the groove 11, the material that described noise reduction web plate 8 is adopted is brass or red copper, into cellular.The noise reduction
The setting of web plate 8 can effectively block the flow velocity of gas, reduce noise, and the life to people is protected there is provided certain health
Barrier, forms the O-shaped hole 9 placed for noise reduction web plate 8 at the middle and lower part of the groove, noise reduction web plate is placed in O-shaped hole 9,
Realize good installation.
Coaxial mounted spacing quiet spring 21 is provided with the outer wall of the bearing block 2 in the present invention, in the spacing quiet spring
The dynamic spring 22 of the embedded limited location of 21 helicla flute；The resistance spring end of the magnet rotor 7 and one of the spacing dynamic spring 22 horizontal cylinder
Mutually touch, positioning hole groove 23 is provided with the upper port outer wall of the bearing block 2, the positioning hole groove 23 is used to fix the limit
The traverse furrow of the quiet spring 21 in position.
Cannelure 13 is provided with the upper port outer wall of heretofore described valve seat 1, the lower section of the cannelure 13 is provided with to be passed through
The location hole 15 worn；Turn is provided with the cannelure 13.
Through hole 24 is formed on the bearing block 2 in the present invention, circular groove 25 is formed on the lower port inwall of the through hole 24,
Polytetrafluoroethylene sealing gasket 101 is provided with the circular groove 25；Formed on the outer wall of the lower end of the bearing block 2 and communicated with through hole 24
Waist type valve opening 26, the center line of the waist type valve opening 26 is consistent with the vertical center line of the lateral aperture 12, in the waist type
The top of valve opening 26 is provided with an annular seal groove 27, the annular seal groove 27 and is provided with hydrogenation nitrile rubber sealing ring 102；Institute
State the first horizontal hole post 28 that formation is communicated with through hole 24 on the middle part outer wall of bearing block 2, the first horizontal hole post 28 be 2 and
It is on the same line, internal thread segment 29 is formed in the through hole 24.
Heretofore described valve rod 3 includes the body of rod 31, and the lower end of the body of rod 31 forms interior axial hole post 32, the interior axle
Form seal groove 33 and annular groove 34 on the outer wall at the middle part of hole post 32, formed on the outer wall of the interior bottom of axial hole post 32 with
The second horizontal hole post 35 that the interior axial hole post 32 is communicated, the second horizontal hole post 35 is for 2 and in same straight line
On, formed on the outer wall at the middle part of the body of rod 31 in external thread section 36, the seal groove 33 and place hydrogenation nitrile rubber sealing
Circle 102.
The present invention actual installation excessively in, load noise reduction web plate 8 in the lower end of O-shaped hole 9 of valve seat 1 first；It is subsequently placed into two welderings
Ring, the weld-ring is by the pure water-soaked containing soldering flux, the lateral aperture 12 and the lower end of noise reduction web plate 8 in valve seat 1；It is last embedding
Enter bend pipe and straight tube.Finally, staff carries out brazing operation.
Valve body is assembled：, there is an annular seal groove 27 lower section in bearing block 2, is then inserted into a size symbol
Close the hydrogenation nitrile rubber sealing ring 102 of this annular seal groove 27；In the circular groove 25 of the lower end of bearing block 2, load one poly- four
PVF sealing gasket 101；Bearing block 2 is inserted in valve seat 1.Wherein, the center line of the waist type valve opening 26 of bearing block 2 and valve seat 1
Lateral aperture 12 vertical center line it is consistent.Secondly, suppressed by frock, bearing block 2 is buckled on valve seat 1, and passed through
The mode of extruding, the location hole 15 on the inserted valve seat 1 of alignment pin 14, completes the assembling of valve body.
Torsion clockwise is further advanced by, valve rod 3 is loaded bearing block 2.Then spacing quiet spring is loaded on bearing block 2
21.The spacing quiet spring 21 is coaxial with bearing block 2, and the traverse furrow of spacing quiet spring 21 is fixed on the positioning hole groove 23 of bearing block 2.
Further load spacing dynamic spring 22, the spacing dynamic spring 22 is not only coaxial with bearing block 2, and positioned at spacing quiet
The upper limit of spring 21 is on the helicla flute between point and lower limit site.
Further spacing dynamic spring 22 is turned round the lower limit site of spacing quiet spring 21.Secondly, two seal grooves 33 of valve rod 3
Upper embedded two hydrogenation nitrile rubbers sealing ring 102, by measuring the distance between the top of bearing block 2 and the top of valve rod 3, comes
Determine the valve opening angle of electric expansion valve.Then, magnet rotor 7 is embedded in valve rod 3, confirms that the resistance spring end of magnet rotor 7 is dynamic with spacing
The horizontal cylinder of of spring 22 is mutually touched.Then, by laser welding, magnet rotor 7 is combined with valve rod 3.At the same time,
Disrance sleeve 6 is welded on valve seat 1.
Wherein, the embodiment of the axial compressive force of valve rod 3 is eliminated：When gas is passed through in valve body bend pipe, no matter electronic expansion
Valve is in any state, and gas all can enter from the stream of the first of bearing block 2 the horizontal hole post 28, and then flow into valve rod 3 second is horizontal
Hole post 35, flows out from the interior axial hole post 32 of valve rod 3, and it is equal with the pressure of outlet side to realize electric expansion valve internal pressure,
Eliminate axial compressive force of the gas to valve rod 3.
Being embodied as the anti-leak of electric expansion valve is in full off state, by being enclosed within valve rod 3 in electric expansion valve
Two seal grooves 33 sealing ring, contact with the inwall of bearing block 2, block gas between bearing block 2 and valve rod 3
Gap flows into the second horizontal hole post 35 of electric expansion valve inside and valve rod 3, finally flows out straight tube, causes quantity of gas leakage to increase
Plus.With this in the same manner, the sealing ring on bearing block 2 also prevent the increase of quantity of gas leakage.Also by teflon seal
Matching between pad 101 and valve rod 3, eliminates gap between the two, effectively blocks gas by gap between the two,
Quantity of gas leakage is prevented to increase.
The raising of flow of electronic expansion valve control accuracy, particular by two annular grooves 34 on valve rod 3, when being passed through gas
When, two surrounding constant pressures of annular groove 34, it is therefore prevented that when valve rod 3 is subject to air pressure produce the pressure of a tendency.As valve opening pulse is walked
Several increases, the flow of gas is consequently increased, its linear state of rating curve.
Under the driving of stepper motor, the resistance that valve rod 3 is subject in rotary course is the present invention：The external thread section of valve rod 3
Frictional force between 36 and the internal thread segment 29 of bearing block 2；Rubbing between hydrogenation nitrile rubber sealing ring 102 and the inwall of bearing block 2
Wipe power；Frictional force between the bottom of valve rod 3 and polytetrafluoroethylene sealing gasket 101.Because these frictional force are present all the time, but all the time
Driving force far smaller than produced by stepper motor.Meanwhile, also because valve rod 3 and the part feature of bearing block 2, eliminate air pressure
To the axial compressive force produced by valve rod 3, it is ensured that the pressure equilibrium of electric expansion valve internal pressure and outlet side.Meanwhile, also due to rubbing
The reduction of power is wiped, the life-span of electric expansion valve is extended.Two annular grooves 34 above the bottom of valve rod 3, improve flow output
Control accuracy.The intervention of noise reduction web plate 8, has met the theme of environmental protection.
The present invention passes through the technical program, and the architectural feature of parts, and not only manufacturing process is simple, and by changing
Become the size of valve opening and valve rod, keep overall appearance structure constant, other serial electric expansion valves can be transformed into, at present,
The electric expansion valve of 11 kinds of series is may be only available for, so as to cause financial cost to substantially reduce, environmental protection.
Above-described embodiment is simply to illustrate that the technology design and feature of the present invention, its objective is to be to allow in the art
Those of ordinary skill will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all
It is equivalent change or the modification according to done by the essence of present invention, all should covers within the scope of the present invention.
Claims (8)
1. a kind of novel electronic expansion valve, including valve seat, is provided with bearing block on the valve seat, and match valve on the bearing block
Bar, forms the groove of up/down perforation on the valve seat, and the groove is inserted into the bearing block for matching, sets in the bearing block
There is valve rod, in the straight tube that the bottom welding of the groove matches, the side communicated with the groove is provided with the valve seat outer wall
Face, the bend pipe that the lateral aperture welding matches, welds a disrance sleeve, in the valve rod upper end on the outer wall of the valve seat
Outside is provided with magnet rotor；It is characterized in that：Further comprises silencing means.
2. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：The silencing means is a silencing net
Plate, the noise reduction web plate is located between the straight tube and the groove.
3. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：The material that described noise reduction web plate is adopted
Matter is brass or red copper, into cellular.
4. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：It is provided with the outer wall of the bearing block
Coaxial mounted spacing quiet spring, in the helicla flute of the spacing quiet spring the dynamic spring of limited location is embedded；The resistance spring end of the magnet rotor with
One horizontal cylinder of the spacing dynamic spring is mutually touched, and on the upper port outer wall of the bearing block positioning hole groove is provided with, described
Positioning hole groove is used to fix the traverse furrow of the spacing quiet spring.
5. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：Formed at the middle and lower part of the groove and used
In the O-shaped hole that noise reduction web plate is placed.
6. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：Set at the upper port outer wall of the valve seat
There is cannelure, the location hole for running through is provided with below the cannelure；Turn is provided with the cannelure.
7. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：Through hole is formed on the bearing block,
Circular groove is formed on the lower port inwall of the through hole, in the circular groove polytetrafluoroethylene sealing gasket is provided with；Under the bearing block
The waist type valve opening communicated with through hole, the center line of the waist type valve opening and the vertical center of the lateral aperture are formed on the outer wall at end
Line is consistent, and an annular seal groove is provided with above the waist type valve opening, and hydrogenation nitrile rubber is provided with the annular seal groove
Sealing ring；The the first horizontal hole post communicated with through hole is formed on the outer wall of the bearing block middle part, the first horizontal hole post is 2
And it is on the same line.
8. a kind of novel electronic expansion valve according to claim 1, it is characterised in that：The valve rod includes the body of rod, the bar
The lower end of body forms interior axial hole post, seal groove and annular groove is formed on the outer wall in the middle part of the interior axial hole post, in the interior axle
The the second horizontal hole post communicated with the interior axial hole post is formed on the outer wall of hole post bottom, the second horizontal hole post is 2
It is individual and on the same line, form external thread section on the outer wall in the middle part of the body of rod.
Priority Applications (2)
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| CN201610889497.6A CN106641430B (en) | 2016-10-12 | 2016-10-12 | Novel electronic expansion valve |
| PCT/CN2017/098582 WO2018068585A1 (en) | 2016-10-12 | 2017-08-23 | Novel electronic expansion valve |
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| CN201610889497.6A CN106641430B (en) | 2016-10-12 | 2016-10-12 | Novel electronic expansion valve |
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| CN106641430A true CN106641430A (en) | 2017-05-10 |
| CN106641430B CN106641430B (en) | 2024-04-26 |
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Cited By (7)
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| WO2018068585A1 (en) * | 2016-10-12 | 2018-04-19 | 诸暨市亿霸电子阀门有限公司 | Novel electronic expansion valve |
| CN109469997A (en) * | 2017-09-07 | 2019-03-15 | 浙江三花智能控制股份有限公司 | Refrigeration system and its electric expansion valve |
| CN110513532A (en) * | 2019-08-15 | 2019-11-29 | 浙江盾安禾田金属有限公司 | Valve muffler and electric expansion valve with the valve muffler |
| WO2020135396A1 (en) * | 2018-12-28 | 2020-07-02 | 浙江三花制冷集团有限公司 | Flow control valve |
| CN111365479A (en) * | 2018-12-26 | 2020-07-03 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| US20220042728A1 (en) * | 2018-12-25 | 2022-02-10 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic Expansion Valve and Air Conditioning System with Electronic Expansion Valve |
| CN110230722B (en) * | 2019-07-10 | 2024-02-27 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7293038B2 (en) * | 2019-08-09 | 2023-06-19 | 株式会社鷺宮製作所 | Motor-operated valve and refrigeration cycle system including the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018068585A1 (en) * | 2016-10-12 | 2018-04-19 | 诸暨市亿霸电子阀门有限公司 | Novel electronic expansion valve |
| CN109469997A (en) * | 2017-09-07 | 2019-03-15 | 浙江三花智能控制股份有限公司 | Refrigeration system and its electric expansion valve |
| CN109469997B (en) * | 2017-09-07 | 2021-10-29 | 浙江三花智能控制股份有限公司 | Refrigerating system and electronic expansion valve thereof |
| US20220042728A1 (en) * | 2018-12-25 | 2022-02-10 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic Expansion Valve and Air Conditioning System with Electronic Expansion Valve |
| US11796234B2 (en) * | 2018-12-25 | 2023-10-24 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system with electronic expansion valve |
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| WO2020135396A1 (en) * | 2018-12-28 | 2020-07-02 | 浙江三花制冷集团有限公司 | Flow control valve |
| US11313475B2 (en) | 2018-12-28 | 2022-04-26 | Zhejiang Sanhua Climate and Appliance Controls Group Co., Ltd. | Flow control valve |
| CN110230722B (en) * | 2019-07-10 | 2024-02-27 | 诸暨市亿霸电子阀门有限公司 | Electronic expansion valve |
| CN110513532A (en) * | 2019-08-15 | 2019-11-29 | 浙江盾安禾田金属有限公司 | Valve muffler and electric expansion valve with the valve muffler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106641430B (en) | 2024-04-26 |
| WO2018068585A1 (en) | 2018-04-19 |
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