CN106895153A - Two-period form electric expansion valve - Google Patents
Two-period form electric expansion valve Download PDFInfo
- Publication number
- CN106895153A CN106895153A CN201510968700.4A CN201510968700A CN106895153A CN 106895153 A CN106895153 A CN 106895153A CN 201510968700 A CN201510968700 A CN 201510968700A CN 106895153 A CN106895153 A CN 106895153A
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- Prior art keywords
- valve
- cavity
- electric expansion
- sound attenuation
- form electric
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- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 17
- 230000009467 reduction Effects 0.000 claims description 8
- 238000002788 crimping Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims 1
- 238000012856 packing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
- F01L25/08—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by electric or magnetic means
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
-
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/52—Means for additional adjustment of the rate of flow
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
-
- 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
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Two-period form electric expansion valve, including motor, the decelerator of the motor output end is connected to, bellows is set with outside the valve rod of the two-period form electric expansion valve, the bellows is stretched or shunk with the reciprocating motion of the valve rod；It is characterized in that, also include valve element, the valve element is cylindrical in shape, its two ends is respectively arranged with the first cavity and the second cavity, second valve port is opened between first cavity and the second cavity, the valve element is provided with opening, and with the exterior space of the valve element be connected first cavity by the opening.Normal open device is additionally provided between first cavity and the second cavity, makes to remain certain flow between first cavity and second cavity；The 3rd sound attenuation features are additionally provided with first cavity, the 3rd sound attenuation features cover the normal open device.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more particularly to a kind of electricity for convertible frequency air-conditioner
Sub- expansion valve.
Background technology
Electric expansion valve is mainly used in frequency-conversion air-conditioning system, is driven by high pulse frequencies electric current
Dynamic motor is rotated, and directly drives decelerator, and by screw thread pair, the transmission of valve rod, make needle
Rise or fall, change valve port opening degree, so as to automatically adjust refrigerant flow, make refrigeration
Agent circuit system remains optimum state.
Refer to Fig. 1, Fig. 1 is a kind of structural representation of electric expansion valve in the prior art.
As shown in figure 1, the electric expansion valve is main by the body portion and use for Flow-rate adjustment
In the coiler part composition for driving；Its coil part includes：Motor 1 ', decelerator 2 ', general
The convert rotational motion of motor 1 ' into the vertical movement of screw mandrel 3 ' screw thread auxiliary structure 5 ', nut 4 ',
Motor housing 6 ', motor housing 6 ' are riveted on the outer outside of gear-box 9 ' of decelerator 2 '；Valve body
Dividing includes valve seat 14 ', valve rod 15 ', and controls the cores such as the bellows 11 ' of the lifting of needle 12 '
Part.Its operating principle is as follows：The rotor rotation of motor 1 ', drives decelerator 2 ' to rotate, and passes through
The transmission of screw thread pair 5 ', screw mandrel 3 ' is moved downward, and withstands force transferring part bushing 16 ' and valve rod
15 ' so that needle 12 ' is moved downward, now, bellows 11 ' is in continuous extended state.When
When applying reverse impulse, screw mandrel 3 ' is moved upwards, back stretch of the needle 12 ' in bellows 11 '
Constantly motion upwards lower with system pressure effect, so as to change the opening degree of valve port 13 ' so that
Flow area changes, and reaches control flow, the purpose of regulating system overheat.
In this electronic expansion valve structure, the low discharge regulation from completely closed state to initial stage
Process, i.e. needle 12 ' from contact valve port 13 ' to gradually leave valve port 13 ' when, due to valve port 13 '
Place's aperture is smaller, obvious throttling can be produced, so that the fluid for flowing through valve port part is big
Width accelerates, the abnormal sound for the vortex of CF occur and being formed, and influence end user's makes
Use comfort level.Also, the electric expansion valve of the structure, valve port 13 ' is larger, therefore during low discharge
Adjustable range it is narrower, be unfavorable for the regulation of higher precision.
Therefore, a kind of abnormal sound that can reduce in initial stage low discharge adjustable range how is designed,
The electric expansion valve of low discharge adjustment width and precision can be improved again, be those skilled in the art urgently
Technical problem to be solved.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of electronic expansion for convertible frequency air-conditioner
Valve, it can reduce abnormal sound in low discharge adjustable range, and low discharge regulation can be improved again
When degree of regulation, therefore, the present invention provide following technical scheme：
Two-period form electric expansion valve, including motor, the decelerator of the motor output end is connected to,
Bellows is set with outside the valve rod of the two-period form electric expansion valve, the bellows is with the valve
The reciprocating motion stretching of bar is shunk；Characterized in that, also including valve element, the valve element is in institute
State and the first valve port is opened or closed under the drive of valve rod, the valve core inside is additionally provided with
Low discharge governor motion, the low discharge governor motion by the valve rod bottom be arranged on
The second valve port composition of the valve core inside；
The valve element is cylindrical in shape, and its two ends is respectively arranged with the first cavity and the second cavity, described
Second valve port is opened between first cavity and the second cavity, and the valve element is provided with circulation
With the exterior space of the valve element be connected first cavity by hole, the opening.
Normal open device is additionally provided between first cavity and the second cavity, makes first chamber
Certain flow is remained between body and second cavity；Also set up in first cavity
There are the 3rd sound attenuation features, the 3rd sound attenuation features cover the normal open device.
3rd sound attenuation features are annular in shape, and are arranged on the end face of the normal open device.
The normal open device is the normal open hole for being arranged on the valve core inside
The first sound attenuation features are provided with first cavity, make the stream flowed into from the opening
Body flows out from the second valve port again after carrying out noise reduction through the first sound attenuation features.
The second sound attenuation features are provided with second cavity.
Second sound attenuation features are fixed by way of crimping deformation in the bottom of the valve element
In second cavity.
The two-period form electric expansion valve that the present invention is provided, section, the lower end of valve element are adjusted in low discharge
All the time contact condition is between portion and the first valve port, most of fluid is flowed into from opening, warp
After crossing the first sound attenuation features and carrying out noise reduction, the second valve port is flowed through, another part fluid is then from valve rod
After gap between stop part flows into the first cavity, then jointly by the second sound attenuation features
129 carry out noise reduction again, and fluid is acted on abundant when sound attenuation features are flowed through by multilayer mesh
Break up, so as to eliminate the vortex of the similar sound that screams, reduce noise.Simultaneously as rill
Amount regulation is mainly adjusted by being arranged on the second valve port of valve core inside, therefore same
Under the conditions of umber of pulse, flow adjustment range is wider, and precision is higher.
Brief description of the drawings
Fig. 1 is a kind of structural representation of electric expansion valve in the prior art；
Fig. 2 is the specific embodiment structural representation of two-period form electric expansion valve provided by the present invention
Figure；
Fig. 3 is the lateral partial structurtes sectional view of embodiment of the present invention；
Fig. 4 is the gasket construction schematic diagram of embodiment of the present invention；
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, tie below
The present invention is described in further detail to close the drawings and specific embodiments.
Refer to that Fig. 2, Fig. 3, Fig. 2 are two-period form electric expansion valve provided by the present invention
A kind of specific embodiment structural representation；Fig. 3 is the valve element knot of first embodiment of the invention
Structure schematic diagram.
As shown in Fig. 2 the two-period form electric expansion valve that the present invention is provided mainly is adjusted by for flow
The body portion of section and the coiler part composition for driving.Its coil part includes：Motor
1st, the decelerator 2 of the output end of motor 1 is connected to, 2 lower ends of slowing down are connected by screw thread auxiliary structure 5
Screw mandrel 3 is connected to, is the reciprocating screw thread pair of screw mandrel 3 by the convert rotational motion of motor 1
Structure 5, is connected with outside nut 4, decelerator 2 between screw mandrel 3 and gear-box 9 and is set with gear
Case 9, the motor housing 6 of motor 1 is riveted on the outside of gear-box 9.
Body portion includes being set with bellows 11, ripple outside valve seat 14, valve rod 15, valve rod 15
Line pipe 11 is stretched or shunk with the reciprocating motion of valve rod 15, because valve element 12 and valve rod 15 can
Mutually link together to motion, so as to realize the lifting of valve element 12 with the lifting of valve rod, from
And the first valve port 13 to being arranged on valve seat 14 is opened or closed.
" what is be movable in the axial direction to each other links together " of the present invention, refers to both valve element and valve rod
Can perform relative motion in the course of the work, but can not be mutually disengaged.
The outward appearance of valve element 12 is substantially cylindrical in shape, and with big footpath section 121 and path section 122, its
In, the first cavity 123 is being offered on one end of big footpath section 121, near path section
122 one end then offers the second cavity 124, in the first cavity 123 and the second cavity 124
Between offer the second valve port 125.
Throughput 1211 is provided with the periphery wall of big footpath section 121, in the present embodiment, such as
Shown in Fig. 3, the throughput 1211 be big footpath section 121 periphery wall on process it is some
Plane, so that fluid circulates.Certainly, those skilled in the art are under based on design of the invention,
Various designs, such as grooving, punching mode, a need can be made to the shape of throughput 1211
It is available for fluid to pass through between the upper and lower ends that big footpath section 121 can be realized.
The bottom 152 of valve rod 15 is stretched into the first cavity 123, and with the second valve port 125
Formed and coordinated, by contact or away from realizing the opening and closing of the second valve port 125, from
And adjust flow.In order that valve rod 15 is connected with valve element 12, in the first cavity 123,
Stop part 126 is additionally provided with, stop part 126 is fixedly connected with the inwall of big footpath section 121, two
Person can be fixed by welding, crimping or other modes.
Valve rod 15 is provided with annular groove 151 near the position of end, is set in annular groove 151
There is screens part, screens part can make to keep can be movable relatively between valve rod 15 and stop part 126
Connection status.In the present embodiment, screens part is specially packing ring 127, specifically,
Packing ring 127 is clamped in annular groove 151, prevents valve rod 15 from departing from the limitation of stop part 126.
During specific assembling, valve rod 15 can be fitted into stop part 126, then packing ring 127 is put into ring
In shape groove 151, then stop part 126 is fixed in the big footpath of valve element section 121, stop part
126 and packing ring 127 limit the extreme position that valve rod 15 is moved up jointly.
Fig. 4 is the gasket construction schematic diagram of first embodiment of the invention；Packing ring 127 is substantially in
" C " font, with opening portion 1272, in the annular groove 151 for inserting valve rod.Packing ring
127 are internally provided with 3 butting sections 1271, and the week of annular groove 151 is close to after assembly
On wall, vacancy portion is additionally provided between adjacent butting section 1271.Certainly, Fig. 4 is used as one kind
Specific embodiment, those skilled in the art can also make under the technical inspiration
Change, such as cancel vacancy portion, butting section 1271 is connected as a single entity, can equally realize invention
Purpose.In addition, the clamping or fixation to annular groove 151 are also not necessarily limited in the form of packing ring,
Through hole can also be such as set on annular groove 151, then by the way of alignment pin, equally
Can make to form spacing connection between valve rod 15 and stop part 126；These positioning methods are obviously
Protection scope of the present invention should be belonged to.
Opening 1221, opening 1221 are offered on the periphery wall of the path section 122 of valve element 12
Number can be 1 or multiple, opening 1221 is by the first cavity 123 and valve element 12
Exterior space be connected, allow fluid from opening 1221 flow into the first cavity 123 in.
The first noise elimination part is additionally provided with the first cavity 123 between opening 1221 and valve port 125
Part 128 so that the fluid flowed into from opening 1221 flows through the first sound attenuation features 128 and disappeared
Flowed out from the second valve port 125 again after sound.First sound attenuation features 128 can be designed to ring bodies,
The first cavity 123 is filled, as shown in Figure 3.
The bottom of path section 122 is provided with the second cavity 124, is set in the second cavity 124
The second sound attenuation features 129 are equipped with, during assembling, path section 122 can be made by way of crimping
Bottom deform, so as to the second sound attenuation features 129 are fixed in the second cavity 124.
The sound attenuation features 129 of above-mentioned first sound attenuation features 128 and second can be using the sieve of Porous
Net or the mode such as wire winding, powder sintered are made, in the present invention, not to noise elimination part
The material or shape of part make any restriction.
In order that two-period form electric expansion valve has dehumidification function, it usually needs closing valve element 12
When closing the first valve port 13, however it remains certain flow.In order to realize this purpose, in this implementation
In mode, normal open device is additionally provided between the first cavity 123 and the second cavity 124,
In present embodiment, normal open device is normal open hole 130, the two of such two-period form electric expansion valve
Just some flow is in the middle of circulation all the time between root adapter.Certainly, in order to turn off
Also there is certain flow, however it is not limited to open up above-mentioned normal open hole 130 during one valve port 13, can be with
The replacement of multiple technologies means is made on this basis, such as one is processed in path section 122
Inclined hole, directly by the second cavity 124 and the ft connection of valve element 12, or the side by slotting
Formula, some circulation grooves are processed on the internal perisporium of the first valve port 13, can equally realize valve body
Still there is certain flow during closing.It will be understood by those skilled in the art that these are based on this
The use of some replacement means in inventive concept, it should also belong to protection scope of the present invention it
It is interior.
So, between the second valve port 125 in the bottom 152 and valve element 12 of valve rod 15 just
Form low discharge governor motion.
Due to being not interference fit between valve rod 15 and stop part 126, but exist certain
Gap, therefore, in the course of the work, still some fluid is two-period form electric expansion valve
It is flowed between gap between valve rod 15 and stop part 126 in the first cavity 123, now,
The segment fluid flow is just flowed directly into normal open hole 130, therefore still there may be certain noise.
In the present embodiment, in the first cavity 123, positioned at the end in normal open hole 130,
Be additionally provided with the 3rd sound attenuation features 1231, the 3rd sound attenuation features 1231 can be it is annular in shape, by
Porous part is made.Certain 3rd sound attenuation features 1231 are not limited to ring-type, only need to realize by
Normal open hole 130 covers.It will be understood by those skilled in the art that when normal open device is other
During structure, also need to only realize setting the 3rd sound attenuation features i.e. in the entrance of the normal open device or inside
It is capable of achieving.
So, even if gap of the fluid between valve rod 15 and stop part 126 flows into, without
By the filtering noise reduction of the first sound attenuation features 128, but due to the presence of the 3rd sound attenuation features 1231,
Fluid has to pass through the 3rd sound attenuation features 1231, can flow into normal open hole 130, so as to realize
The purpose of further noise reduction.
When 15 displacement from the top down of valve rod, bellows 11 is in extended state, valve element 12
Acted on by difference force, the lower surface of stop part 126 keeps with the upper surface of packing ring 127 all the time
Laminating, when valve element 12 is moved downward to extreme position, after being contacted with the first valve port 13, valve rod
15 continue to move down, and now packing ring 127 is moved down with valve rod 15 together, is departed from and is stopped
The laminating in portion 126, until the bottom 152 of valve rod 15 contacts sealing with the second valve port 125,
Now, two-period form electric expansion valve is closed.
During valve opening, motor 1 is powered, and bellows 11 shrinks, and band ovable valve stem 15 is from bottom to top
Displacement, because valve element 12 is acted on by difference force, the lower surface of valve element 12 still with the first valve
Mouth 13 keeps contact, is moved in the continuation of valve rod 15, upper surface and stop part until packing ring 127
126 lower surface contact；Valve rod 15 is moved on continuing, and drives the upper shifting together of stop part 126, this
When valve element integrally begin to move up.When motor 1 is opened when standard-sized sheet pulse, two-period form electronics is swollen
Swollen valve integrally reaches full-gear.
In the above process, before the upper surface of packing ring 127 contacts with the lower surface of stop part 126
This section of adjustable range, flow is mainly by second on bottom 152 and the valve element of valve rod 15
Aperture control, i.e. low discharge regulation section are carried out between valve port 125, because valve port reduces, in phase
Under the conditions of umber of pulse, the adjustable range of flow is wider.And valve rod 15 is overall with movable valve plug 12
Move up, now flow is mainly carried out by the aperture between the valve port 13 of valve element 12 and first
Control, i.e. big flow regulation section.
As described above, adjust section in low discharge, the bottom of valve element 12 and the first valve port 13 it
Between be in contact condition all the time, now, most of fluid is flowed into from opening 1221, by the
After one sound attenuation features 128 carry out noise reduction, flow through the second valve port 125, another part fluid then from
It is then common to pass through after gap between valve rod 15 and stop part 126 flows into the first cavity 123
Second sound attenuation features 129 carry out noise reduction again, fluid when sound attenuation features are flowed through, by Multilayer Network
Hole effect is fully broken up, and so as to eliminate the vortex of the similar sound that screams, reduces noise.
That is, the two-period form electric expansion valve that the present invention is provided, fluid passes through mesh sound attenuation features,
Inside is vortexed, bubble is significantly eliminated, it is scattered to disturb, and solves existing electric expansion valve first
The abnormal sound problem that phase low discharge occurs when adjusting.Simultaneously as low discharge regulation is mainly
It is adjusted by being arranged on the second valve port 125 inside valve element 12, therefore in same umber of pulse
Under the conditions of, flow adjustment range is wider, and precision is higher.
It should be noted that the noun of locality such as upper and lower, left and right of present invention appearance, is to be based on
On the basis of structure shown in Figure of description, can not be interpreted as to the scope of the present invention
Limitation.
A kind of electric expansion valve for convertible frequency air-conditioner provided by the present invention is carried out above
It is discussed in detail.Specific case used herein is carried out to principle of the invention and implementation method
Illustrate, the explanation of above example is only intended to help and understands that the method for the present invention and its core are thought
Think.It should be pointed out that for those skilled in the art, not departing from this hair
On the premise of bright principle, some improvement and modification can also be carried out to the present invention, these improve and
Modification is also fallen into the protection domain of the claims in the present invention.
Claims (6)
1. two-period form electric expansion valve, including motor, subtracting for the motor output end is connected to
Fast device, is set with bellows outside the valve rod of the two-period form electric expansion valve, the bellows with
The reciprocating motion stretching of the valve rod is shunk；Characterized in that, also including valve element, the valve
Core is opened or closed under the drive of the valve rod to the first valve port, and the valve core inside is also
Be provided with low discharge governor motion, the low discharge governor motion by the valve rod bottom with
It is arranged on the second valve port composition of the valve core inside；
The valve element is cylindrical in shape, and its two ends is respectively arranged with the first cavity and the second cavity, described
Second valve port is opened between first cavity and the second cavity, and the valve element is provided with circulation
With the exterior space of the valve element be connected first cavity by hole, the opening；
Normal open device is additionally provided between first cavity and the second cavity, makes first chamber
Certain flow is remained between body and second cavity；Also set up in first cavity
There are the 3rd sound attenuation features, the 3rd sound attenuation features cover the normal open device.
2. two-period form electric expansion valve according to claim 1, it is characterised in that described
3rd sound attenuation features are annular in shape, and are arranged on the end face of the normal open device.
3. two-period form electric expansion valve according to claim 1, it is characterised in that described
Normal open device is the normal open hole for being arranged on the valve core inside.
4. two-period form electric expansion valve according to claim 1, it is characterised in that described
The first sound attenuation features are provided with first cavity, make the fluid from opening inflow through first
Sound attenuation features flow out from the second valve port again after carrying out noise reduction.
5. two-period form electric expansion valve according to claim 1, it is characterised in that described
The second sound attenuation features are provided with second cavity.
6. two-period form electric expansion valve according to claim 5, it is characterised in that described
Second sound attenuation features are fixed on described the by the bottom of valve element by way of crimping deformation
In two cavitys.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510968700.4A CN106895153A (en) | 2015-12-19 | 2015-12-19 | Two-period form electric expansion valve |
| PCT/CN2016/110719 WO2017101878A1 (en) | 2015-12-19 | 2016-12-19 | Two-section electronic expansion valve |
| KR1020187020447A KR102590435B1 (en) | 2015-12-19 | 2016-12-19 | Two-stage electronic expansion valve |
| JP2018529560A JP6921824B2 (en) | 2015-12-19 | 2016-12-19 | Two-stage electronic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510968700.4A CN106895153A (en) | 2015-12-19 | 2015-12-19 | Two-period form electric expansion valve |
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| Publication Number | Publication Date |
|---|---|
| CN106895153A true CN106895153A (en) | 2017-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510968700.4A Pending CN106895153A (en) | 2015-12-19 | 2015-12-19 | Two-period form electric expansion valve |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6921824B2 (en) |
| KR (1) | KR102590435B1 (en) |
| CN (1) | CN106895153A (en) |
| WO (1) | WO2017101878A1 (en) |
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| CN107606234A (en) * | 2017-07-28 | 2018-01-19 | 上海卫星工程研究所 | A kind of temperature-sensing valve based on bellows structure |
| CN108591570A (en) * | 2018-05-08 | 2018-09-28 | 九牧厨卫股份有限公司 | A kind of motor on-off valve control method and relevant control system |
| CN109297217A (en) * | 2018-10-12 | 2019-02-01 | 格力电器（杭州）有限公司 | Throttle filter device and its electrical equipment |
| 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 |
| CN109899677A (en) * | 2019-04-01 | 2019-06-18 | 太仓中科信息技术研究院 | Flow control air charging system |
| CN111219518A (en) * | 2018-11-27 | 2020-06-02 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| CN111829216A (en) * | 2019-04-23 | 2020-10-27 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and refrigerator with same |
| CN113915339A (en) * | 2020-07-09 | 2022-01-11 | 株式会社鹭宫制作所 | Two-stage electric valve and refrigeration cycle system |
| CN115031448A (en) * | 2022-05-17 | 2022-09-09 | 合肥通用机械研究院有限公司 | Manual-automatic integrated adjusting device based on expansion valve |
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| JP7391003B2 (en) | 2020-10-23 | 2023-12-04 | 株式会社鷺宮製作所 | electric valve |
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| CN107606234A (en) * | 2017-07-28 | 2018-01-19 | 上海卫星工程研究所 | A kind of temperature-sensing valve based on bellows structure |
| 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 |
| CN108591570B (en) * | 2018-05-08 | 2020-06-23 | 九牧厨卫股份有限公司 | Motor switch valve control method and related control system |
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| CN115031448B (en) * | 2022-05-17 | 2024-03-08 | 合肥通用机械研究院有限公司 | Manual-automatic integrated adjusting device based on expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180095654A (en) | 2018-08-27 |
| JP6921824B2 (en) | 2021-08-18 |
| JP2019500567A (en) | 2019-01-10 |
| WO2017101878A1 (en) | 2017-06-22 |
| KR102590435B1 (en) | 2023-10-16 |
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