CN104748457B - A kind of heating power expansion valve and its core assembly - Google Patents
A kind of heating power expansion valve and its core assembly Download PDFInfo
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- CN104748457B CN104748457B CN201310740778.1A CN201310740778A CN104748457B CN 104748457 B CN104748457 B CN 104748457B CN 201310740778 A CN201310740778 A CN 201310740778A CN 104748457 B CN104748457 B CN 104748457B
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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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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a kind of heating power expansion valve and its core assembly, the core assembly includes the valve core housing for being provided with valve port（1）And located at valve core housing（1）Interior valve element（2）, valve element（2）With the throttling end coordinated with valve port（21）, valve element（2）The other end and valve core housing（1）Internal perisporium circumference dynamic sealing, and the end connection heating power expansion valve drive link（30）, the refrigerant import of the heating power expansion valve is by connecting the valve core housing（1）Internal perisporium connect the valve port with the refrigerant passage of periphery wall；The valve element is not acted on by refrigerant high-pressure shaft to power, it slow down influence of the fluctuation of refrigerant high pressure to valve element open degree, valve element will not produce malfunction because of system refrigerant high pressure fluctuations, improve the correctness that heating power expansion valve valve port automatically adjusts, and can be in the case where gas tank area of bed keeps constant, the flow of appropriate increase valve port, improve the refrigerating capacity of system；In addition, the valve element accuracy of action in the core assembly is also higher.
Description
Technical field
The present invention relates to technical field of heat exchange, more particularly to a kind of heating power expansion valve and its core assembly.
Background technology
Heating power expansion valve exports the degree of superheat size of refrigerant by the temperature-sensitive system sensing evaporator 300 of itself, comes from
The open degree of dynamic control valve element, and then change the circulation area that refrigerant flows through valve port, so as to realize the automatic of refrigerant flow
Regulation and the effect of reducing pressure by regulating flow.
Fig. 1 is refer to, Fig. 1 is a kind of main composition structural representation of typical heat-exchange system in the prior art.
Compressor 100, evaporator 300, condenser 200, heating power expansion valve 400 are four big primary elements in refrigeration system,
System is in day-to-day operation, and heating power expansion valve is because refrigerating capacity and system mismatch, and easily causing refrigeration system, ice occur stifled, dirty stifled
Phenomena such as, and this phenomenon is often caused by caused by the throttling spool end wear of heating power expansion valve, in order to save also for
Reduce handling, application and it is raw there have been this novel heating power expansion valve of interchangeable valve element, when system, ice occur stifled, dirty stifled etc.
As long as valve hole part is unloaded cleaning during phenomenon or changed, and without changing whole valve body.
Fig. 2-3 is refer to, Fig. 2 is a kind of structural representation of embodiment of core assembly in the prior art；Fig. 3
For a kind of structural representation of typical heating power expansion valve in the prior art.
From figure 2 it can be seen that the heating power expansion valve of prior art includes valve body and core assembly, core assembly includes valve
Chip 1 ', valve element guide ring 2 ', valve element 3 ', valve element support base 4 ', valve core spring 5 ', valve core spring support base 6 ', valve core housing 7 '
And the parts such as filter net seat formed by screen pack 8 ' and the riveting of seal receptacle 9 '.Wherein, Valve core blade and valve element guide ring be first
Riveted tightly in valve core housing 7 ', valve element 3 ', valve element support base 4 ', valve core spring 5 ' and valve core spring support base 6 ' are sequentially loaded into valve element
In set 7 ', valve element support base is riveted tightly with valve core housing 7 ' by certain initial tension of spring, valve element 3 ' has sealing cone, the sealing
The conical surface keeps good sealing in the presence of valve core spring 5 ' with the valve port of Valve core blade 1 '.
Wherein, valve core spring support base 6 ' and valve element guide ring 2 ' are Rhizoma Sparganii or more prismatic shapes, so that refrigerant flows into valve
Inside core assembly.The sieve pack of screen pack 8 ', the riveting of seal receptacle 9 ' composition, screen pack 8 ' rise miscellaneous in filtering refrigeration system
Matter.When core assembly loads thermal expansion valve insertion, the driver blade in air tank head 10 ' is contacted at one end, and the other end passes through valve
Under body aperture to the promotion of the drive link 12 ' of inner chamber, the spring force of valve core spring 5 ' is overcome, the top of valve element 3 ' is opened so as to be flowed
Amount regulation.
From the above as can be seen that valve core spring 5 ', valve core spring support base 6 ' may be contained within high pressure refrigerant inlet
On circulation passage, for throttling valve element 3 ' both ends of the surface respectively by the effect of the refrigerant from high pressure chest and from low pressure chamber
Refrigerant effect, and the height pressure difference of valve port both sides be exist all the time it is indelible, when the condensing pressure of system is (high
Pressure) when fluctuating, active force on valve element 3 ' will respective change, valve port will approach to turn off in the presence of condensing pressure
Or open, influence the stability in use and reliability of heating power expansion valve.
Although increase air tank head 10 ' can slow down the influence that above-mentioned pressure oscillation is brought, gas tank to a certain extent
First 10 ' size can not infinitely increase, and thus constrain valve port design size, and then limit heating power expansion valve maximum
Cold.
Therefore, how a kind of heating power expansion valve smaller by system condensing pressure oscillation is provided, is technology in the art
Personnel's technical problem urgently to be resolved hurrily.
The content of the invention
The purpose of the present invention is provides a kind of core assembly and its heating power expansion valve, the thermal expansion with the core assembly
Valve in by system condensing pressure influence of fluctuations it is smaller.
In order to solve the above technical problems, the present invention provides a kind of core assembly of heating power expansion valve, including it is provided with valve port
Valve core housing and the valve element in the valve core housing, the valve element have with the valve port coordinate throttling end, it is described
The other end of valve element and the internal perisporium circumference dynamic sealing of the valve core housing, and the end connects the transmission of the heating power expansion valve
Bar, the refrigerant import of the heating power expansion valve connect institute by connecting the internal perisporium of the valve core housing with the refrigerant passage of periphery wall
State valve port.
Preferably, the internal chamber wall circumferential seal of the periphery wall of the valve core housing and the valve body of the heating power expansion valve is to isolate
The refrigerant passage.
Preferably, the both ends of the valve core housing and the internal chamber wall circumferential seal of the valve body, the refrigerant passage include
The circulation groove on perisporium between the both ends of the valve core housing and the valve seal.
Preferably, the refrigerant passage also includes the high pressure refrigerant chamber surrounded by the valve element and the valve core housing, described
Valve element is located at the section of the high pressure refrigerant intracavitary and forms groove-like structure, the two side of the groove with the internal perisporium of the valve core housing
Projected area in cross section is equal.
Preferably, in addition to the spring that is pressed between the valve core housing and the valve element, and the spring is positioned at described
Valve core housing and the outside of the valve element dynamic sealing end.
Preferably, flow direction of the cross section of the throttling end along refrigerant gradually increases, so as to the heating power expansion valve
Drive link downward actuation opens the valve port.
Preferably, valve element loads from valve port one end of the valve core housing, and detachable backstop institute is additionally provided with the valve element
The pin or baffle ring of spring are stated, the valve element is connected with the valve core housing in a manner of detachable.
Preferably, the notch of the circulation groove is covered with the screen pack for filtering impurity in refrigerant.
Preferably, the core assembly flexibly abuts with the drive link, and the core assembly is close to the valve port
End and the outer end of the refrigerant exit pipe of the valve body of the heating power expansion valve position, the core assembly and the thermal expansion
The detachable mode of valve body of valve connects.
Valve element is in addition to the end that throttles in core assembly provided by the invention, the end of the other end connection drive link not with from
The refrigerant contact that the refrigerant import of valve body is flowed into high pressure chest, that is to say, that valve element only throttle in the axial direction end end face by
The low pressure of connection refrigerant exit in valve body, the refrigerant high pressure of connection valve body refrigerant import hardly act on spool end
On, i.e., valve element is poor in the absence of high-pressure in the axial direction, and refrigerant high pressure is nearly free from axial power, so, valve element to valve element
Balance only need consider iris action power and act on valve element throttling end end face on low pressure, work as evaporator plate
When managing no pressure drop or pressure drop very little, the power at valve element both ends is acted on regard to equal.
When the refrigerant high pressure fluctuations in refrigeration system, because valve element is not acted on by refrigerant axial force, axle would not be produced
To displacement, so as to slow down influence of the fluctuation of refrigerant high pressure to valve element open degree, valve element will not be fluctuated because of system high pressure and produced
Raw malfunction, improves the correctness that heating power expansion valve automatically adjusts.
And then in the case where gas tank area of bed keeps constant, can suitably increase the flow of valve port, improve the system of system
Cold.
In addition, because connecting drive link after the internal perisporium circumference dynamic sealing of valve element and valve core housing, valve core housing can rise to valve element
To the effect of guiding, increase valve element accuracy of action.
Present invention also offers a kind of heating power expansion valve, including valve body, the upper end of the valve body is provided with air tank head, institute
State valve inner and be provided with the drive link of driver blade and the core assembly being connected with the drive link in the connection air tank head,
The core assembly is the core assembly described in any of the above-described.
Because the heating power expansion valve has above-mentioned core assembly, therefore the above-mentioned technology that heating power expansion valve has core assembly is imitated
Fruit.
Brief description of the drawings
Fig. 1 is a kind of main composition structural representation of typical heat-exchange system in the prior art；
Fig. 2 is a kind of structural representation of embodiment of core assembly in the prior art；
Fig. 3 is a kind of structural representation of typical heating power expansion valve in the prior art；
Fig. 4 is the structural representation of core assembly in a kind of embodiment of the present invention；
Fig. 5 is the sectional view of core assembly shown in Fig. 4；
Fig. 6 is the structural representation of heating power expansion valve in a kind of embodiment of the present invention；
Fig. 7 is the valve body structure schematic diagram of heating power expansion valve shown in Fig. 6.
Wherein, one-to-one relationships of the Fig. 1 into Fig. 3 between reference and component names is as follows：
100 compressors, 200 condensers, 300 evaporators, 400 heating power expansion valves, 1 ' Valve core blade, 2 ' valve element guide rings, 3 '
Valve element, 4 ' valve element support bases, 5 ' valve core springs, 6 ' valve core spring support bases, 7 ' valve core housings, 8 ' screen packs, 9 ' seal receptacles, 10 '
Air tank head, 11 ' diaphragms, 12 ' drive links.
Wherein, the one-to-one relationship in Fig. 4 to 7 between reference and component names is as follows：
1 valve core housing, 1a through holes, 11 first sealing ends, 12 second sealing ends, 13 circulation grooves, 14 co-ends, 2 valves
Core, 21 throttling ends, 3 springs, 4 screen packs, 5 second sealing rings, 6 first sealing rings, 7 baffle rings, 10 diaphragms, 20 driver blades,
30 drive links, 40 regulation springs, 50 spring bases, 60 valve bodies, 70 set screws, A stomatas, B high pressure refrigerant chambers.
Embodiment
The core of the present invention is provides a kind of core assembly and heating power expansion valve, the heating power expansion valve with the core assembly
Condensing pressure influence of fluctuations is smaller in by system.
Without loss of generality, technology is introduced by taking application of the core assembly in the detachable heating power expansion valve of valve element as an example herein
Scheme, it will be understood by those skilled in the art that this paper protection domain is not limited solely to the detachable heating power expansion valve of valve element.
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
Applying example, the present invention is described in further detail.
Fig. 4-7 is refer to, Fig. 4 is the structural representation of core assembly in a kind of embodiment of the present invention；Fig. 5 is figure
The sectional view of core assembly shown in 4；Fig. 6 is the structural representation of heating power expansion valve in a kind of embodiment of the present invention；Fig. 7
For the valve body structure schematic diagram of heating power expansion valve shown in Fig. 6；Arrow represents the flow direction of coolant media wherein in figure.
Heat-exchange system includes mainly including compressor 100, condenser 200, evaporator 300 and heating power expansion valve 400, heat
Power expansion valve 400 is arranged between condenser 200 and evaporator 300, the opening position of close evaporator 300, heat-exchange system
Operation principle is mainly as follows：HTHP vapor phase refrigerant from compressor 100 is changed into normal temperature height by the radiating of condenser 200
The liquid phase refrigerant of pressure enters heating power expansion valve 400, after the reducing pressure by regulating flow by heating power expansion valve 400, the liquid of normal temperature high voltage
Phase refrigerant is changed into liquid phase (or gas-liquid two-phase) refrigerant of Room-temperature low-pressure, and the liquid phase refrigerant of Room-temperature low-pressure is in evaporator 300
It is changed into the vapor phase refrigerant of low-temp low-pressure after interior absorption heat, finally enters compressor 100, is changed into after the compression of compressor 100
HTHP gas phase refrigeration machine, so complete a circulation.
Heating power expansion valve 400 has valve body 60 and a core assembly, and the upper end of valve body 60 is provided with air tank head, in air tank head
Pressure-sensing device-diaphragm 10 is provided with, air tank head is isolated into two chambers, upper chamber up and down and is filled with refrigerant by diaphragm 10
Or the material that pressure changes therewith can be varied with temperature, experiencing refrigeration system evaporator 300 by the capillary refrigerant goes out
The temperature change of outer tube wall at mouthful, so as to which the pressure of the filling material in upper chamber changes therewith, make caused by diaphragm 10 downwards
Operation force also changes therewith, and the downward actuation power is the opening force of valve element 2；The lower chambers of diaphragm 10 are by outer balance pipe and evaporation
It is connected inside the port of export of device 300, experiences the pressure (and evaporating pressure) of the exit refrigerant of evaporator 300, the power is valve element 2
Closing forces.
By the rotation of set screw 70, so as to adjust the pretightning force of spring 40, this is pre- for motion upwards for push the spring seat 50
Clamp force passes to driver blade 20, because driver blade 20 and diaphragm 10 stick together, so as to promote diaphragm 10 to act upwards, and the power
For the closing forces of valve element 2.When the active force of the side of diaphragm 10 2 is equal, diaphragm 10 is in poised state.When evaporator 300 exports
When locating temperature rise (i.e. degree of superheat increase), the down force of diaphragm 10 increase, diaphragm 10 overcomes remaining two active force downward
Action, the downward actuation of valve element 2 is promoted by the drive link 30 of driver blade 20, increases valve port circulation area, into the system of evaporator 300
Cryogen flow increases therewith, and the evaporating pressure in evaporator 300 also increases therewith, with the increasing of the downside evaporating pressure of diaphragm 10
Greatly, the also releveling therewith of diaphragm 10.
The core assembly of heating power expansion valve 400 provided by the invention includes being provided with the valve core housing 1 of valve port and is arranged at
Valve element 2 in valve core housing 1, valve element 2 have the throttling end 21 coordinated with the valve port, and valve port can design according to the design needs
For different shapes, such as along the section of axis it is arc or taper etc., correspondingly, the throttling end 21 of valve element 2 is also configured as
The spherical or taper being adapted with valve port.
The other end of valve element 2 and the internal perisporium circumference dynamic sealing of valve core housing 1 in the present invention, and end connection heating power is swollen
The drive link 30 of swollen valve 400, valve element 2 can be connected with drive link 30 by removablies such as swollen rivetings, in pushing away for drive link 30
Under dynamic or pulling, valve element 2 can move with respect to valve port, to realize that valve port opens the regulation of aperture, the import of heating power expansion valve 400
Refrigerant connects valve port with the refrigerant passage of periphery wall by the internal perisporium of connection valve core housing 1, and such valve element 2 is close to the throttling end of valve port
The end face in portion is in by low pressure refrigerant active force.
For valve element 2 in addition to the end 21 that throttles, the other end connects the end of drive link 30 in core assembly provided by the invention
Do not contacted with the refrigerant flowed into from the refrigerant import of valve body 60 in high pressure chest, that is to say, that valve element 2 only throttles end in the axial direction
21 end face is by the low pressure (negligible) of connection refrigerant exit in valve body 60, the refrigerant of the connection refrigerant import of valve body 60
High pressure is hardly acted on the end face of valve element 2, i.e., valve element 2 is poor in the absence of high-pressure in the axial direction, and refrigerant high pressure is to valve element more than 2
Axial power is not produced, and so, the balance of valve element 2 only needs to consider the active force of diaphragm 10 and acts on the throttling of valve element 2
Low pressure on the end face of end 21, when the coil pipe of evaporator 300 does not have pressure drop or pressure drop very little, act on the both ends of valve element 2
Power is with regard to equal.
When the refrigerant high pressure fluctuations in refrigeration system, because valve element 2 is not acted on by refrigerant axial force, axle would not be produced
To displacement, so as to slow down influence of the fluctuation of refrigerant high pressure to the open degree of valve element 2, valve element 2 will not fluctuate because of system high pressure
Malfunction is produced, improves the correctness that heating power expansion valve 400 automatically adjusts.
And then in the case where gas tank area of bed keeps constant, can suitably increase the flow of valve port, improve the system of system
Cold.
In addition, in the present invention valve body 60 of the periphery wall of valve core housing 1 and heating power expansion valve 400 internal chamber wall circumferential seal with
Isolate refrigerant passage, the import refrigerant of heating power expansion valve 400 is connected by the internal perisporium of connection valve core housing 1 and the refrigerant passage of periphery wall
Port valve mouth, the accuracy of the motion of valve element 2 can be increased.
Setting for refrigerant passage in valve core housing 1 can have diversified forms, and it is a kind of preferably to following present refrigerant passage
Embodiment.
In a preferred embodiment, the both ends of valve core housing 1 contact with the internal chamber wall circumferential seal of valve body 60, cold
The circulation groove 13 on perisporium between the both ends that matchmaker's passage seals including being located at valve core housing 1 and valve body 60, the two of circulation groove 13
Projected area of the side wall in cross section can be with equal, that is to say, that refrigerant high pressure is made to the axial direction of the two side of circulation groove 13
Firmly equal in magnitude, in the opposite direction, i.e., refrigerant high pressure is to active force sum of zero of the valve core housing 1 in axial direction, such edge of valve core housing 1
Axially there is no sports tendency.
It should be noted that cross section refers to perpendicular to the section of the axis of valve core housing 1.
In the various embodiments described above, circulation groove 13 can be the annular groove radially extended, and two cell walls of annular groove are on groove
Center cross-sectional is symmetrical, and two cell walls non-parallel can also be set with parallel, such as the axial profile of annular groove can be
The structures such as isosceles trapezoid；Annular groove processing technology is fairly simple.
Further, the high pressure that refrigerant passage can also include being surrounded by valve element 2 and valve core housing 1 in the various embodiments described above is cold
Matchmaker chamber B, high pressure refrigerant chamber B connect circulation groove 13, and valve element 2 is located at the section of high pressure refrigerant intracavitary and the inner circumferential of the valve core housing 1
Wall forms groove-like structure, and the projected area of the two side of groove in cross section is equal, so, when refrigerant flows into high pressure refrigerant chamber B
Afterwards, refrigerant is also zero to the pressure summations of high pressure refrigerant chamber B vertically, i.e. high pressure refrigerant chamber B is respectively to valve element 2 and valve core housing 1
Axial force summation is zero.Which is further contemplated due to the special shape of the throttling end 21 of valve element 2 and caused
Refrigerant High Pressure Difference, the set-up mode can counteract refrigerant high pressure act on valve element 2 throttle end 21 pressure.
Specifically, the internal perisporium for surrounding high pressure refrigerant chamber B valve core housing 1 in a preferred embodiment is column,
Valve element 2 be located at the restriction portion in high pressure refrigerant chamber B outline can on the section center cross-sectional it is symmetrical.
The passage for connecting circulation groove 13 and high pressure refrigerant chamber B can be the through hole being opened on the perisporium of valve core housing 1, and through hole can
Think the cylindrical hole smaller to refrigerant flow resistance, or the hole of other forms, the quantity of through hole can be according to design
Need to select, can be symmetrical arranged.
In the various embodiments described above, core assembly provided by the present invention can also include being pressed in valve core housing 1 and valve element 2 it
Between spring, and the spring is located at the outside of the valve core housing 1 and the dynamic sealing end of valve element 2；The main function of spring
To overcome the gravity of frictional force and valve element 2 between valve element 2 and valve core housing 1, valve element 2 is set to play pre-shutdown effect with valve port.
Spring is installed on the outside of high pressure chest, such spring and in order to pacify the parts such as spring-loaded spring mounting seat not
It can be further ensured that valve element 2 is not influenceed axially by axial force by the active force of refrigerant high pressure in high pressure chest, while can also
Increase the design flexibility of the grade part of spring base 50.
Specifically, flow direction of the cross section of the valve element 2 in the various embodiments described above and valve port mating surface along refrigerant gradually increases.
In a kind of specific embodiment, valve element 2 loads from valve port one end of valve core housing 1, i.e. valve port and valve core housing 1 is same
Axle, the pin of spring 3 described in detachable backstop or baffle ring 7 is additionally provided with valve element 2, valve element 2 is with valve core housing 1 with detachable
Formula mode connects, and valve core housing can be designed as the form of connecting seat close to the end of valve port, for connecting exterior line, and its week
Coordinate to being sealed with valve core housing 1.Core assembly in above-described embodiment, after dismantling pin or baffle ring 7, it is possible to by valve element
2 take apart from the valve port end of valve core housing 1；Valve element 2 and valve core housing 1 are further designed as detachable form by the structure type,
It is conveniently replaceable valve element 2.
In a preferred embodiment, above-mentioned core assembly flexibly abuts with drive link 30, and core assembly is close
The outer end positioning of the refrigerant exit pipe of the end of valve port and the valve body 60 of heating power expansion valve, core assembly and heating power expansion valve
60 detachable mode of valve body connects.
The refrigerant through throttling expansion is directly flowed out without turning round by the refrigerant exit pipe of valve body 60 in the embodiment, can be with
Media flow resistance is reduced, when refrigerant has certain degree of supercooling, sudden strain of a muscle gas would not be produced in valve body 60, improve the system of refrigeration system
Cold effect.
Also, the structure is advantageous to core assembly and quickly taken apart from the refrigerant exit of valve body 60, reduce and waste.
In order to improve the cleannes for the coolant media that circulated in system, the notch of circulation groove 13 is covered with miscellaneous in refrigerant for filtering
The screen pack 4 of matter.Screen pack 4 can be welded in valve core housing 1 by spot welding or roll welding.
Certainly, in order to increase the sealing between two parts in sealing contact, can also be set in sealing contact position close
Seal part, as illustrated, be provided with seal groove in the sealing end position of valve core housing 1 and valve body 60, the is provided with seal groove
One sealing ring 6；Similarly, the position of valve element 2 and the dynamic sealing of valve core housing 1 is provided with the second sealing ring 5 and installs the second sealing ring 5
Seal groove.
Referring again to Fig. 6-7, present invention also offers a kind of heating power expansion valve 400, including valve body 60, the valve body 60
Upper end be provided with air tank head, the valve body 60 be internally provided with connect the drive link 30 of driver blade 20 in the air tank head with
And the core assembly being connected with drive link 30, core assembly are the core assembly described in any of the above-described embodiment.
Because the heating power expansion valve 400 has above-mentioned core assembly, therefore heating power expansion valve 400 has the above-mentioned skill of core assembly
Art effect.
A kind of heating power expansion valve provided by the present invention and its core assembly are described in detail above.Herein should
The principle and embodiment of the present invention are set forth with specific case, the explanation of above example is only intended to help and managed
Solve the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, do not departing from
On the premise of the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this hair
In bright scope of the claims.
Claims (9)
1. a kind of core assembly of heating power expansion valve, it is characterised in that including being provided with the valve core housing (1) of valve port and located at institute
The valve element (2) in valve core housing (1) is stated, the valve element (2) has the throttling end (21) coordinated with the valve port, the valve element
(2) the internal perisporium circumference dynamic sealing of the other end and the valve core housing (1) and it is connected the drive link of the heating power expansion valve
(30), the refrigerant import of the heating power expansion valve is by connecting the internal perisporium of the valve core housing (1) and the refrigerant passage of periphery wall
Connect the valve port；The internal chamber wall circumferential seal of the periphery wall of the valve core housing (1) and the valve body (60) of the heating power expansion valve
To isolate the refrigerant passage.
2. core assembly as claimed in claim 1, it is characterised in that the both ends of the valve core housing (1) and the valve body
(60) internal chamber wall circumferential seal, the refrigerant passage include two with the valve body (60) sealing positioned at the valve core housing (1)
Circulation groove (13) on perisporium between end.
3. core assembly as claimed in claim 1, it is characterised in that the refrigerant passage also include by the valve element (2) and
The high pressure refrigerant chamber that the valve core housing (1) surrounds, the valve element (2) are located at the section of the high pressure refrigerant intracavitary and the valve element
The internal perisporium for covering (1) forms groove-like structure, and the projected area of the two side of the groove-like structure in cross section is equal.
4. the core assembly as described in any one of claims 1 to 3, it is characterised in that also include being pressed in the valve core housing (1)
Spring (3) between the valve element (2), and the spring (3) is located at the valve core housing (1) and the valve element (2) dynamic sealing
The outside of end.
5. core assembly as claimed in claim 4, it is characterised in that stream of the cross section of throttling end (21) along refrigerant
To gradual increase, the valve port is opened so as to the drive link downward actuation of the heating power expansion valve.
6. core assembly as claimed in claim 5, it is characterised in that valve element (2) fills from valve port one end of the valve core housing (1)
Enter, the pin or baffle ring of spring (3) described in detachable backstop, the valve element (2) and institute are additionally provided with the valve element (2)
Valve core housing (1) detachable mode is stated to connect.
7. core assembly as claimed in claim 2, it is characterised in that the notch of the circulation groove (13) is covered with cold for filtering
The screen pack (4) of impurity in matchmaker.
8. the core assembly as described in any one of claims 1 to 3, it is characterised in that the core assembly and the drive link
(30) flexibly abut, the core assembly is close to the end of the valve port and the refrigerant of the valve body (60) of the heating power expansion valve
The outer end positioning of outlet, the core assembly are connected with valve body (60) detachable mode of the heating power expansion valve.
9. a kind of heating power expansion valve, including valve body (60), the upper end of the valve body (60) is provided with air tank head, the valve body
(60) it is internally provided with and connects the drive link (30) of driver blade and the valve being connected with the drive link (30) in the air tank head
Core assembly, it is characterised in that the core assembly is the core assembly described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310740778.1A CN104748457B (en) | 2013-12-27 | 2013-12-27 | A kind of heating power expansion valve and its core assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310740778.1A CN104748457B (en) | 2013-12-27 | 2013-12-27 | A kind of heating power expansion valve and its core assembly |
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| Publication Number | Publication Date |
|---|---|
| CN104748457A CN104748457A (en) | 2015-07-01 |
| CN104748457B true CN104748457B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310740778.1A Active CN104748457B (en) | 2013-12-27 | 2013-12-27 | A kind of heating power expansion valve and its core assembly |
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| CN110094525B (en) * | 2018-01-31 | 2021-07-30 | 浙江三花制冷集团有限公司 | Electrically operated valve and manufacturing method thereof |
| CN112539284B (en) * | 2019-09-20 | 2024-06-18 | 浙江三花商用制冷有限公司 | Flow control valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5005370A (en) * | 1988-12-19 | 1991-04-09 | Fuji Koki Mfg. Co. Ltd. | Thermal expansion valve |
| US5243829A (en) * | 1992-10-21 | 1993-09-14 | General Electric Company | Low refrigerant charge detection using thermal expansion valve stroke measurement |
| CN202023972U (en) * | 2011-03-04 | 2011-11-02 | 丹佛斯（天津）有限公司 | Thermal expansion valve |
| CN102589207A (en) * | 2011-01-14 | 2012-07-18 | 浙江三花股份有限公司 | Refrigeration system and thermostatic expansion valve thereof |
| CN102758965A (en) * | 2011-04-27 | 2012-10-31 | 浙江三花股份有限公司 | Thermostatic expansion valve |
| CN103075565A (en) * | 2011-10-26 | 2013-05-01 | 浙江三花股份有限公司 | Thermal expansion valve and thermal expansion valve assembling method |
-
2013
- 2013-12-27 CN CN201310740778.1A patent/CN104748457B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5005370A (en) * | 1988-12-19 | 1991-04-09 | Fuji Koki Mfg. Co. Ltd. | Thermal expansion valve |
| US5243829A (en) * | 1992-10-21 | 1993-09-14 | General Electric Company | Low refrigerant charge detection using thermal expansion valve stroke measurement |
| CN102589207A (en) * | 2011-01-14 | 2012-07-18 | 浙江三花股份有限公司 | Refrigeration system and thermostatic expansion valve thereof |
| CN202023972U (en) * | 2011-03-04 | 2011-11-02 | 丹佛斯（天津）有限公司 | Thermal expansion valve |
| CN102758965A (en) * | 2011-04-27 | 2012-10-31 | 浙江三花股份有限公司 | Thermostatic expansion valve |
| CN103075565A (en) * | 2011-10-26 | 2013-05-01 | 浙江三花股份有限公司 | Thermal expansion valve and thermal expansion valve assembling method |
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| Publication number | Publication date |
|---|---|
| CN104748457A (en) | 2015-07-01 |
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