CN108375251A - Heating power expansion valve and its manufacturing method - Google Patents
Heating power expansion valve and its manufacturing method Download PDFInfo
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- CN108375251A CN108375251A CN201810037528.4A CN201810037528A CN108375251A CN 108375251 A CN108375251 A CN 108375251A CN 201810037528 A CN201810037528 A CN 201810037528A CN 108375251 A CN108375251 A CN 108375251A
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Abstract
The present invention provides a kind of heating power expansion valve, it welds together valve body made of aluminum alloy materials and the air tank head with stainless steel casing with clamping ring made of stainless steel material respectively, to which air tank head to be assembled on valve body, and sealing can be formed between connector and valve body and between connector and air tank head by welding manner.In this way, valve body on air tank head, without connecting by helicitic texture, sealing ring need not be also added between valve body and air tank head, is conducive to the manufacturing process of simplified heating power expansion valve and reduces cost.The present invention also provides a kind of corresponding thermal expansion valve manufacturing methods.
Description
The application is that number of patent application is 201410778517.3, entitled " heating power expansion valve and its manufacturer
Method ", the applying date are the divisional application of the patent application on December 16th, 2014.
【Technical field】
The present invention relates to throttling control field more particularly to a kind of heating power expansion valve and its manufacturing methods.
【Background technology】
Heating power expansion valve (Thermostatic Expansion Valve, TXV) is that air-conditioning and refrigeration equipment generally use
Throttle part, it can be throttled and be depressured to the liquid refrigerant for carrying out condenser, and according to the temperature of evaporator outlet
It spends to adjust the flow for the refrigerant for being sent into evaporator from condenser, to adapt to the continually changing needs of cooling load.Heating power is swollen
The General Principle that swollen valve controls refrigerant flow is：The temperature that evaporator outlet is sensed by air tank head, in air tank head
The temperature that is sensed according to air tank head of medium generate the thermal expansion of degree of correspondence, pass through and thermally expand pair valve being connect with air tank head
Bar generates pressure, and valve rod pushes spool to move under the driving of the pressure, to adjust the aperture of valve opening, reaches adjusting refrigerant
The effect of flow.
In existing heating power expansion valve, air tank head is connected to the valve body of heating power expansion valve generally by helicitic texture
On.However, helicitic texture is easy to, because forming gap in conjunction with defective tightness and between air tank head and valve body, make in order to prevent
Cryogen is leaked out from the gap of helicitic texture, often also needs to add sealing ring outside helicitic texture, this will be into one
Step ground increases the structure complexity and manufacturing cost of heating power expansion valve.
Therefore, it is necessary to be improved to existing technology, to solve the above technical problem.
【Invention content】
The purpose of the present invention is to provide a kind of simple in structure and lower-cost heating power expansion valve and its corresponding systems
Make method.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of heating power expansion valve, including air tank head, valve rod,
Spool and valve body；The valve body is made of aluminium alloy, inside offer valve opening；The air tank head includes being made of stainless steel
Shell；The heating power expansion valve further includes the connector being made of stainless steel, and the connector passes through welding with the valve body
Mode is fixedly connected, and the shell of the air tank head is fixedly connected by welding with the connector；The spool
Mounted on the valve inner, the valve rod is at least partially seated at the valve inner, the spool close to the valve opening,
One end of the valve rod is supported or is fixed on the air tank head, and the other end is close to the spool.
The connector and the valve body stove weldering, mix be brazed or vacuum brazing by way of be fixedly connected；The gas
The shell of case head is fixedly connected with the connector by way of argon arc welding or Laser Welding.
The valve body is further opened with return flow line, and the heating power expansion valve senses the return flow line using the air tank head
Internal fluid condition, the fluid condition sensed according to the air tank head make the medium inside the air tank head that harmomegathus occur,
To change the position of the valve rod and spool relative to the valve opening, the aperture of the valve opening is adjusted, and then adjust and pass through institute
State the flow that valve opening flows through the fluid of the valve body；The welding hole being connected to the return flow line, institute are offered on the valve body
It states connector and is inserted partially into the welding hole, form clearance fit with the inner wall of the welding hole, and pass through stove weldering, mixing pricker
The mode of weldering or vacuum brazing is welded in the welding hole.
Solder is equipped between the portion of external peripheral wall and the inner wall of the welding hole of the connector, the solder is in stove
It is melted during weldering, mixing soldering or vacuum brazing and is filled into the outer peripheral wall of the connector and the welding hole
It is formed between the outer peripheral wall and the inner wall of the welding hole of the connector between inner wall, and after the solder solidification close
Envelope；The valve body includes intercommunicating pore, and the intercommunicating pore is located at the upside of the bottom and the return flow line of the welding hole, described
The diameter of intercommunicating pore is less than the diameter of the welding hole.
The air tank head includes main part, and the valve body is further opened with return flow line, and the main part and the reflux are logical
Road is connected to；The welding hole being connected to the return flow line is offered on the valve body, the connector is inserted partially into the weldering
Hole is connect, forms clearance fit with the inner wall of the welding hole, and be welded on by way of stove weldering, mixing soldering or vacuum brazing
In the welding hole；The connector is cylindrical shape or circular ring shape, the internal partial wall close to its own one end of the connector
Internal diameter increase and form socket part, the internal diameter of the socket part is more than the internal diameter of the connector rest part；The gas tank
The shell of head is formed with bell and spigot joint, the reduced diameter of the circle outer peripheral wall close to its own end of the bell and spigot joint and
Form assembled portion, the outer diameter of the assembled portion is less than the outer diameter of the other parts of the bell and spigot joint, and with the socket part
Outer diameter is corresponding；The assembled portion is sleeved in the socket part, and clearance fit is formed with the socket part, and by Laser Welding or
The mode of argon arc welding is welded in the socket part.
The inner wall of the outer peripheral wall of the assembled portion and/or the socket part is during Laser Welding or argon arc welding by portion
Divide ground fusing, the inner wall of the outer peripheral wall and the socket part that make the assembled portion is bonded to each other, and then makes described group
Sealing is formed by Laser Welding or argon arc welding between the outer peripheral wall in dress portion and the inner wall of the socket part.
The connector be cylindrical shape or circular ring shape, the portion of external peripheral wall close to its own one end of the connector
Reduced diameter and form socket part, the outer diameter of the socket part is less than the outer diameter of the connector rest part；The air tank head
The shell be formed with bell and spigot joint, the internal diameter of the internal partial wall close to its own end of the bell and spigot joint increases and formation group
Dress portion, the internal diameter of the assembled portion are more than the internal diameter of the other parts of the bell and spigot joint, and with the internal diameter phase of the socket part
It is corresponding；The socket part is sleeved in the assembled portion, forms clearance fit with the assembled portion, and pass through Laser Welding or argon arc welding
Mode be welded in the assembled portion；The air tank head includes main part, and the valve body is further opened with return flow line, the master
Body portion is connected to the return flow line；The welding hole being connected to the return flow line, the connector are offered on the valve body
It is inserted partially into the welding hole, forms clearance fit with the inner wall of the welding hole, and pass through stove weldering, mixing soldering or vacuum
The mode of soldering is welded in the welding hole.
The inner wall of the outer peripheral wall of the socket part and/or the assembled portion is during Laser Welding or argon arc welding by portion
Divide ground fusing, the inner wall of the outer peripheral wall and the assembled portion that make the socket part is bonded to each other, and then makes the set
Sealing is formed by Laser Welding or argon arc welding between the outer peripheral wall of socket part and the inner wall of the assembled portion.
The present invention also provides a kind of manufacturing method of heating power expansion valve, the heating power expansion valve includes air tank head, valve rod, valve
Core and valve body, the air tank head include the shell being made of stainless steel, and the valve body is made of aluminium alloy and opens up inside it
There is valve opening；It the described method comprises the following steps：
The connector being made of stainless steel is provided；
The connector is fixedly connected by welding with the valve body；
The spool is mounted on the valve inner, the valve rod is at least partially seated at the valve inner,
Make the spool close to the valve opening, one end of the valve rod is close to the spool；
The shell of the air tank head is fixedly connected with the connector by welding manner, and by the valve rod
The other end is supported or is fixed on the air tank head.
The air tank head includes main part, and the connector is welded by stove with the valve body, mixes soldering or vacuum brazing
Mode be fixedly connected；The shell of the air tank head and connector company of fixation by way of argon arc welding or Laser Welding
It connects；One end of the valve rod is supported or is fixed on the bottom of the main part of the air tank head.
Compared with prior art, heating power expansion valve provided by the invention and its manufacturing method be will be made of aluminum alloy materials
Valve body and air tank head with stainless steel casing weld together with clamping ring made of stainless steel material respectively, to by gas tank
Head is assembled on valve body, and can be by welding manner between connector and valve body and between connector and air tank head
Form sealing.In this way, valve body can be connect with air tank head by connector, be conducive to the manufacturing process for simplifying heating power expansion valve and
Reduce cost.
【Description of the drawings】
Fig. 1 is the internal structure schematic cross-sectional view of an embodiment of heating power expansion valve provided by the invention；
Fig. 2 is the enlarged diagram of the parts I in Fig. 1；
Fig. 3 is the decomposition diagram of heating power expansion valve embodiment shown in FIG. 1；
Fig. 4 is the internal structure schematic cross-sectional view of the another embodiment of heating power expansion valve provided by the invention；
Fig. 5 is the enlarged diagram of the parts V in Fig. 4.
【Specific implementation mode】
The invention will be further described in the following with reference to the drawings and specific embodiments.
It please referring to Fig.1 to Fig.3, an embodiment of heating power expansion valve of the invention provides a kind of heating power expansion valve 100,
The heating power expansion valve 100 includes valve body 10, connector 20, air tank head 30, valve rod 40, spool 50 and regulating mechanism 60.The heating power
Expansion valve 100 is suitable for carrying out throttling control to multiple fluid, in the present embodiment in order to describe more intuitive, only to incite somebody to action
The heating power expansion valve 100 is described in detail for being carried out for throttling control to refrigerant in automotive air-conditioning system；But
Those skilled in the art are obviously it should be understood that the type of fluid of throttling control can be carried out by the heating power expansion valve 100 not
It is limited to refrigerant.
Valve body 10 is made of aluminium alloy, is generally shaped like cuboid.It is recessed down and shape to the top section of valve body 10
At cylindrical welding hole 11, the axial direction of the welding hole 11 is longitudinally disposed, for welding wherein connector 20.Valve body
10 top offers return flow line 12, which is the through-hole of substantially cylindrical, laterally penetrates through on valve body 10
The opposite sides in portion, and it is respectively formed the first recirculation hole 131 and the second recirculation hole 132 in the opposite sides of valve body 10.Valve body
10 offer between upside (i.e. its side close to valve body 10 top) of the bottom of welding hole 11 with return flow line 12 and are connected to
Hole 140, the intercommunicating pore 140 are cylindrical hole, and diameter is less than the diameter of welding hole 11.Upper end (the i.e. court of the intercommunicating pore 140
To the one end at 10 top of valve body) it is coaxially connected to welding hole 11, the lower end of the intercommunicating pore 140 is (i.e. towards 10 bottom of valve body
One end) it is connected to the upside of return flow line 12.The sidewall sections of 12 downside (i.e. close to the side of 110 bottom end of valve body) of return flow line
Ground recess go down and form the first mounting hole 141, first mounting hole 141 be cylindrical hole, across return flow line 12 be connected to
Hole 140 is coaxially aligned.It is recessed down and forms the second mounting hole 142 to the bottom part of first mounting hole 141, second peace
It is also cylindrical hole to fill hole 142, and diameter is less than the diameter of the first mounting hole 141, and coaxially connects with the first mounting hole 141
It is logical.Valve body 10 is further opened with rod aperture 143 and lower rod aperture 144, and rod aperture 143 and lower rod aperture 144 are cylindrical hole on this, wherein
The diameter of upper rod aperture 143 is less than the diameter of the second mounting hole 142, and the bottom end on the top of upper rod aperture 143 and the second mounting hole 142
Coaxially it is connected to；The diameter of lower rod aperture 144 is less than the diameter of upper rod aperture 143, and the top of lower rod aperture 144 and upper rod aperture 143
Bottom end is coaxially connected to.
Valve body 10 is further opened with third recirculation hole 133, the 4th recirculation hole 134, mounting hole 135, valve opening 145 and valve chamber 146.
Third recirculation hole 133 and the 4th recirculation hole 134 are the roughly cylindrical through-hole being laterally extended, and are separately positioned on valve body 10
The opposite sides of lower part, wherein third recirculation hole 133 and the first recirculation hole 131 are set to the same side of valve body 10, the 4th circulation
Hole 134 and the second recirculation hole 132 are set to the same side of valve body 10, and the position of third recirculation hole 133 is than the 4th recirculation hole 134
It is more nearly the bottom end of valve body 10.The bottom end opening of lower rod aperture 144 (is pushed up towards valve body 10 in the upside of the 4th recirculation hole 134
The side at end).The mounting hole 135 is blind cylindrical hole, and valve is opened on the first recirculation hole 131 and third recirculation hole 133
The same side of body 10, and axial also parallel with the first recirculation hole 131 and the axial direction of third recirculation hole 133, for it is existing tight
Valve body 10 is fixed on required use position by the cooperations such as firmware (not shown) such as bolt.According to the concrete shape of fastener, Gu
Determine hole 135 inner wall can open up screw thread etc. for and appended claims structure.Valve chamber 146 is to be opened on 10 bottom end of valve body simultaneously
The cylindrical step hole longitudinally extended towards 10 top orientation of valve body, one side are stretched into third recirculation hole 133 inside valve body 10
End connection.Valve opening 145 is formed in 146 top of valve chamber, and bottom end is coaxially connected to valve chamber 146, and top is then with the 4th
The downside (i.e. towards the side of 10 bottom end of valve body) of recirculation hole 134 is connected to.Lower rod aperture 144 is with valve opening 145 across the 4th recirculation hole
134 are coaxially mutually aligned.
Connector 20 is made of stainless steel, its shape is cylindrical shape or circular ring shape in present embodiment.20 bottom end of connector
Outer dia it is corresponding with the internal diameter of welding hole 11 so that the bottom end of connector 20 can be inserted in welding hole 11, and connect
Clearance fit can be formed between the outer peripheral wall and the inner wall of welding hole 11 of part 20.Welding is being inserted into the bottom end of connector 20
It, can be by modes such as welding means, such as stove weldering, mixing soldering, vacuum brazing, by the portion of external of connector 20 behind hole 11
The inner wall of peripheral wall and welding hole 11 welds together, to which connector 20 to be fixed on valve body 10.In addition, being welded above-mentioned
Cheng Zhong, solder (can be existing solder, therefore be not shown in figure) can quilt used by stove weldering, mixing soldering or vacuum brazing
Fusing, the solder of fusing can flow between the portion of external peripheral wall of connector 20 and the inner wall of the welding hole 11, and filling connects
Gap between the portion of external peripheral wall and the inner wall of welding hole 11 of fitting 20；Wait for the solder is cooling, after solidification, you can
Sealing is formed between the portion of external peripheral wall and the inner wall of welding hole 11 of connector 20.The top of connector 20 is formed with socket part
21.In the present embodiment, the shape of socket part 21 is cylindrical shape or circular ring shape, by connector 20 close to the one of itself top
The internal diameter of circle inner wall equably increases (that is, the internal partial wall is equably recessed along radial direction towards outside) and shape
At that is, the internal diameter of socket part 21 is more than the internal diameter of 20 other parts of connector.
Air tank head 30 includes main part 31, and most of feature of the main part 31 is similar with existing air tank head, inside
Equipped with the pressure-actuated diaphragm that generates when thermally expanding medium and can be by thermal expansion media expansion.The shell 310 of main part 31
It is made of stainless steel material, which partly protrudes the bell and spigot joint 32 for extending and being formed cylindrical shape or circular ring shape, the socket
First 32 close to itself end one circle outer peripheral wall uniform external diameter reduce (that is, the portion of external peripheral wall along
Radial direction is inwards equably recessed) and cylindrical shape or the assembled portion 33 of circular ring shape are formed, the outer diameter of the assembled portion 33 is less than
The outer diameter of the other parts of bell and spigot joint 32, and it is corresponding with the internal diameter of socket part 21, it can coaxially be sleeved in socket part 21
And clearance fit is formed with socket part 21, and by welding mean, such as Laser Welding or argon arc welding, be fixed in socket part 21,
Air tank head 30 can be thus connected on valve body 10 by connector 20.In addition, during Laser Welding or argon arc welding,
The whole circle inner wall of the whole circle outer peripheral wall and socket part 21 that can also make assembled portion 33 is bonded to each other, in assembled portion
Sealing is formed between 33 outer peripheral wall and the inner wall of socket part 21.At this point, main part 31 can pass through bell and spigot joint 32 and connection
Part 20 is connected to return flow line 121 so that connector 20 and bell and spigot joint can be entered simultaneously by flowing through the fluid of return flow line 121
32, and touch main part 31.Medium inside main part 31 can be according to the temperature of the fluid condition sensed, such as fluid
Temperature and the pressure of degree or fluid and generate the thermal expansion of degree of correspondence, the movement of its diaphragm is driven by thermal expansion, pair and gas
The valve rod 40 that case head 30 connects generates pressure, makes valve rod 40 under the driving of the pressure along the axial movement of itself.
Valve rod 40 includes upper drive link 41 and underdrive bar 42.Support or be fixed on air tank head 30 in one end of upper drive link 41
Main part 31 bottom, shaft pass through socket part 32, connector 20, welding hole 11, intercommunicating pore 140, return flow line 12, first
Mounting hole 141 and the second mounting hole 142, the other end then stretch into rod aperture 143.The diameter of underdrive bar 42 is not more than lower rod aperture
144 internal diameter is axially displaceably set in lower rod aperture 144, and one end stretches into one end of rod aperture 143 with upper drive link 41
Coaxially mutually supporting, the other end passes through the 4th recirculation hole 134 along with the axially vertical direction of the 4th recirculation hole 134, and
It stretches into valve opening 145.
Spool 50 is in the present embodiment steel ball, is placed in valve chamber 146 and is aligned valve opening 145, underdrive bar 42
It stretches into one end alignment spool 50 of valve opening 145 and supports on spool 50.The shape and size of spool 50 are opposite with valve opening 145
It answers, the aperture of valve opening 145 can be adjusted when being moved relative to valve opening 145.
Regulating mechanism 60 includes adjustment seat 61, the first spring 62, valve core frame 63.Adjustment seat 61 substantially has outside stairstepping
Circumferential surface it is round table-like, closest to 10 bottom end of valve body and the maximum a part of peripheral surface of diameter and valve chamber 146 close to valve body
10 bottom ends and the maximum a part of inner wall of internal diameter cooperated fixation using the mode such as being threadedly coupled, make adjustment seat
61 fixedly and height be adjustably assemblied on valve body 10.61 center of adjustment seat offers the bullet for accommodating adjustment spring 62
Spring hole 61a.First spring 62 is cylindrical helical spring, is placed between adjustment seat 61 and spool 50 and is radially limited in bullet
In the 61a of spring hole, can flexibly it stretch along longitudinal direction.Valve core frame 63 is generally cylindrical, be placed in the first spring 62 and spool 50 it
Between, one end is coaxially sleeved in the first spring 62, and the other end stretches out from 62 top of the first spring and forms a circle around directly
Diameter is more than the flange of 62 internal diameter of the first spring, prevents valve core frame 63 from falling into inside the first spring 62.Spool 50 is clamped in spool
One end and underdrive bar 42 that frame 63 is stretched out from 62 top of the first spring are stretched between one end of valve opening 145.When in air tank head 30
Medium when not generating the thermal expansion of sufficient degree, the elastic force of the first spring 62 can drive valve core frame 63, spool 50 and valve rod
40 are all moved upward, and make spool 50 closer to valve opening 145, reduce the circulation area of valve opening 145, pass through valve opening to reduce
145 refrigerant flow.
In addition, the heating power expansion valve 100 further includes tabletting 71, upper rod aperture sealing ring 72 and valve chamber sealing ring 64.Tabletting 71
For the thin rounded flakes being made of such as copper using metal material, diameter is corresponding to 141 diameter of the first mounting hole, central then offer directly
Through-hole (in figure non-label) of the diameter not less than the diameter of upper drive link 41.The tabletting 71 is fixed in the first mounting hole 141, is uploaded
Lever 41 is passed through from the through-hole that 71 center of tabletting opens up.Upper rod aperture sealing ring 72 is to use elastic material O as made of rubber
Shape circle, in the case where not deforming, outer diameter of rod aperture sealing ring 72 is slightly larger than the diameter of the second mounting hole 142 on this, interior
Diameter is then slightly less than the diameter of drive link 41.Rod aperture sealing ring 72 is placed in the second mounting hole 142 and is limited by tabletting 71 on this,
And rod aperture sealing ring 72 is fitted snugly on drive link 41 on this, outer periphery is closely pressed on the second mounting hole 142
On inner wall, i.e., interference fit is formed between upper drive link 41 and the inner wall of the second mounting hole 142, for preventing in valve chamber 146
Refrigerant leaked out by lower rod aperture 144 and upper rod aperture 143.Valve chamber sealing ring 64 is also for using elastic material such as rubber
Manufactured O-ring is set on the smaller peripheral surface of a part of diameter of adjustment seat 61 (for example, it may be embedded in opening up
In annular groove 61b on 61 peripheral surface of adjustment seat), and form interference between adjustment seat 61 and the inner wall of valve chamber 146 and match
It closes, for preventing the refrigerant in valve chamber 146 from being leaked out from 10 bottom end of valve body.
Particularly, it is first by stove weldering, mixing soldering, vacuum brazing in the specific processing procedure of the heating power expansion valve 100
Etc. being suitble to the welding mean welded between stainless steel material and aluminum alloy materials that connector 20 is connected on valve body 10,
Then by spool 50, regulating mechanism 60, valve rod 40, tabletting 71, upper rod aperture sealing ring 72, valve chamber sealing ring 64 according to above-mentioned installation
Position is installed in valve body 10, is suitble to be welded between same stainless steel material finally by argon arc welding, Laser Welding etc.
Welding mean air tank head 30 is connected on connector 20.
In use, the refrigeration that the first recirculation hole 131 of the heating power expansion valve 100 passes through condenser output channel and condenser
Agent outlet, the second recirculation hole 132 are connected to by evaporator input channel with the refrigerant inlet of evaporator.4th recirculation hole
134 are connected to by evaporator output tube road with the refrigerant inlet of evaporator, and third recirculation hole 133 passes through compressor input channel
It is connected to the refrigerant outlet of compressor.At work, the refrigerant for carrying out condenser circulates the heating power expansion valve 100 from third
Hole 133 is passed through valve chamber 146, if the position where spool 50 does not completely close valve opening 145 at this time, refrigerant passes through valve opening
145 and the 4th recirculation hole 134 be transported to evaporator for freezing.For the raised refrigerant of temperature after refrigeration from evaporator
Discharge flows back to compressor for recycling by the first recirculation hole 131, return flow line 12 and the second recirculation hole 132.After use
Temperature raised refrigerant when flowing through return flow line 12, can also be flowed through from intercommunicating pore 140, connector 20 and bell and spigot joint 32 and
Touch the main part 31 of air tank head 30.After main part 31 senses the operating modes such as temperature or the temperature and pressure of refrigerant,
In medium corresponding thermal expansion is generated according to the operating mode that senses, pressure is generated by the upper drive link 41 for thermally expanding to valve rod 40
Power, upper drive link 41 push underdrive bar 42 and spool 50 to axially move under the driving of the pressure, to adjust valve opening 145
Aperture, further adjust through the refrigerant flow of valve opening 145.
It is appreciated that when the refrigeration effect of evaporator is poor, the refrigerant temperature of reflux will increase, at this time air tank head
30 degree of thermal expansion generated will be larger, can be by the whole amplitude for pushing down on bigger of valve rod 40, downwards by the top of spool 50
And far from valve opening 145, to expand the aperture of valve opening 145, the refrigerant flow for flowing into evaporator is caused to increase, enhancing refrigeration effect
Fruit.If the refrigeration effect of evaporator is very strong, the thermic load of air-conditioning system reduces, then the refrigerant temperature to flow back will drop
It is low so that the degree of thermal expansion that air tank head 30 generates becomes smaller, and the amplitude that valve rod 40 moves down reduces, 62 meeting of adjustment spring at this time
Spool 50 is pushed up upward, reduces the aperture of valve opening 145 by rebound again so that the refrigerant flow for flowing into evaporator reduces.
Please refer to Fig. 4 and Fig. 5, another better embodiment of the invention provides a kind of heating power expansion valve 200.The heating power
Most of feature of expansion valve 200 is similar to above-mentioned heating power expansion valve 100, and heating power expansion valve 200 and heating power expansion valve 100
Difference be then the structure of air tank head and connector.In the present embodiment, 310, the shell of the main part 31 of air tank head 30
The bell and spigot joint 32 for dividing ground protrusion to extend and formed cylindrical shape or circular ring shape, the position close to itself end of the bell and spigot joint 32 is formed
There is assembled portion 33a.Assembled portion 33a be expanded by the internal partial wall internal diameter of bell and spigot joint 32 close to itself end (that is,
The internal partial wall is equably recessed along radial direction towards outside) and the cylindrical shape or doughnut portions of formation, i.e. assembled portion 33a
Internal diameter be more than 32 other parts of bell and spigot joint internal diameter.The outer diameter of the circle outer peripheral wall close to itself end of connector 20 is equal
(that is, the portion of external peripheral wall is inwards equably recessed along radial direction) is reduced evenly and forms cylindrical shape or circle
The outer diameter of the socket part 21a of annular, socket part 21a are less than the outer diameter of 20 other parts of connector, and with assembled portion 33a's
Internal diameter is corresponding, can coaxially be sleeved in assembled portion 33a and form clearance fit with assembled portion 33a, and by welding mean,
Such as Laser Welding or argon arc welding, it is fixed in assembled portion 33a, thus air tank head 30 can be connected to valve by connector 20
On body 10.In addition, during Laser Welding or argon arc welding, the whole circle inner wall and socket part 21a of assembled portion 33a can also be made
Outer peripheral wall is bonded to each other, to form sealing between the inner wall and the outer peripheral wall of socket part 21 of assembled portion 33.
The present invention also provides a kind of manufacturing methods of heating power expansion valve, below to a better embodiment of this method into
Row is introduced.The better embodiment of this method can be used for manufacturing above-mentioned heating power expansion valve 100, specifically include following institute
The each step stated.
Valve body 10, connector 20, air tank head 30, valve rod 40, spool 50 and the adjusting machine of above-mentioned heating power expansion valve 100 are provided
Structure 60；The specific structural features of these components had already described above, and details are not described herein again.
Connector 20 and valve body 10 are placed into correctly opposite position according to the concrete structure of above-mentioned heating power expansion valve 100
It sets, is then fixedly connected with connector 20 with valve body 10 with welding manners such as stove weldering, mixing soldering, vacuum brazings；
By spool 50, regulating mechanism 60, valve rod 40, tabletting 71, upper rod aperture sealing ring 72, valve chamber sealing ring 64 according to it is upper
The consistent installation site of concrete structure for stating heating power expansion valve 100 is installed in valve body 10；
Air tank head 30 is fixedly connected with connector 20 finally by welding manners such as argon arc welding, Laser Weldings, and by valve rod
Support or be fixed on the bottom of the main part 31 of air tank head 30 in 40 one end.
It is appreciated that the better embodiment of this method can also be used for manufacturing above-mentioned heating power expansion valve 200.
In heating power expansion valve provided by the invention (such as heating power expansion valve 100 and 200 described in the above embodiment) and
It is that first connector made of stainless steel material 20 is welded on valve body 10 made of aluminum alloy materials, so in its manufacturing method
The shell 310 of air tank head 30 being made of stainless steel is welded on connector 20 again afterwards.In this way, 30 nothing of valve body 10 and air tank head
Structure must be threaded to be connected with each other, and between connector 20 and valve body 10 and can be connected by welding manner
Effective sealing is formed between part 20 and air tank head 30, without traditional sealing ring is arranged in these positions, is conducive to simplify whole
System journey and reduction manufacturing cost.
It should be noted that：Above example is merely to illustrate the present invention and not limits technical side described in the invention
Case, although this specification with reference to the above embodiments to present invention has been detailed description, the common skill of this field
Art personnel should be appreciated that person of ordinary skill in the field still can modify or equivalently replace the present invention, and
All do not depart from the technical solution of the spirit and scope of the present invention and its improvement, should all cover in scope of the presently claimed invention
It is interior.
Claims (10)
1. a kind of heating power expansion valve, including air tank head, valve rod, spool and valve body；It is characterized in that：The valve body is by aluminium alloy system
At, inside offer valve opening；The air tank head includes the shell being made of stainless steel；The heating power expansion valve further includes by not
Become rusty connector made of steel, and the connector is fixedly connected by welding with the valve body, the air tank head it is described
Shell is fixedly connected by welding with the connector；The spool is mounted on the valve inner, the valve rod
It is at least partially seated at the valve inner, institute is supported or be fixed on to the spool close to the valve opening, one end of the valve rod
It states on air tank head, the other end is close to the spool.
2. heating power expansion valve as described in claim 1, it is characterised in that：The connector is welded by stove with the valve body, is mixed
The mode for closing soldering or vacuum brazing is fixedly connected；The shell of the air tank head by argon arc welding or swashs with the connector
The mode of flush weld is fixedly connected.
3. heating power expansion valve as described in claim 1, it is characterised in that：The valve body is further opened with return flow line, the heat
Power expansion valve senses the fluid condition inside the return flow line, the stream sensed according to the air tank head using the air tank head
Body operating mode makes the medium inside the air tank head that harmomegathus occur, to change the position of the valve rod and spool relative to the valve opening
It sets, adjusts the aperture of the valve opening, and then adjust the flow for the fluid for flowing through the valve body by the valve opening；On the valve body
The welding hole being connected to the return flow line is offered, the connector is inserted partially into the welding hole, with the welding hole
Inner wall formed clearance fit, and stove weldering, mixing soldering or vacuum brazing by way of be welded in the welding hole.
4. heating power expansion valve as claimed in claim 3, it is characterised in that：The portion of external peripheral wall of the connector and the weldering
It connects and is equipped with solder between the inner wall in hole, the solder welds in stove, mixing soldering or vacuum brazing during are melted and fill
To between the outer peripheral wall and the inner wall of the welding hole of the connector, and in the connector after the solder solidification
Sealing is formed between outer peripheral wall and the inner wall of the welding hole；The valve body includes intercommunicating pore, and the intercommunicating pore is located at described
The upside of the bottom of welding hole and the return flow line, the diameter of the intercommunicating pore are less than the diameter of the welding hole.
5. heating power expansion valve as claimed in claim 1 or 2, it is characterised in that：The air tank head includes main part, the valve body
It is further opened with return flow line, the main part is connected to the return flow line；It is offered on the valve body and the return flow line
The welding hole of connection, the connector are inserted partially into the welding hole, and clearance fit is formed with the inner wall of the welding hole, and
It is welded in the welding hole by way of stove weldering, mixing soldering or vacuum brazing；The connector is cylindrical shape or annulus
Shape, the internal diameter of the internal partial wall close to its own one end of the connector increase and form socket part, the socket part it is interior
Diameter is more than the internal diameter of the connector rest part；The shell of the air tank head is formed with bell and spigot joint, the bell and spigot joint
Assembled portion is formed close to the reduced diameter of a circle outer peripheral wall of its own end, the outer diameter of the assembled portion is less than the set
The outer diameter of the other parts of connector, and it is corresponding with the outer diameter of the socket part；The assembled portion is sleeved in the socket part,
Clearance fit is formed with the socket part, and is welded in the socket part by way of Laser Welding or argon arc welding.
6. heating power expansion valve as claimed in claim 5, it is characterised in that：The outer peripheral wall of the assembled portion and/or the set
The inner wall of socket part is partly melted during Laser Welding or argon arc welding, makes the outer peripheral wall of the assembled portion and the set
The inner wall of socket part is bonded to each other, and then makes to pass through between the outer peripheral wall of the assembled portion and the inner wall of the socket part
Laser Welding or argon arc welding and form sealing.
7. heating power expansion valve as claimed in claim 1 or 2, it is characterised in that：The connector is cylindrical shape or circular ring shape, institute
It states the reduced diameter close to the portion of external peripheral wall of its own one end of connector and forms socket part, the outer diameter of the socket part
Less than the outer diameter of the connector rest part；The shell of the air tank head is formed with bell and spigot joint, and the bell and spigot joint connects
The internal diameter of the internal partial wall of its own nearly end increases and forms assembled portion, and the internal diameter of the assembled portion is more than the bell and spigot joint
The internal diameter of other parts, and it is corresponding with the internal diameter of the socket part；The socket part is sleeved in the assembled portion, and described
Assembled portion forms clearance fit, and is welded in the assembled portion by way of Laser Welding or argon arc welding；The air tank head packet
Main part is included, the valve body is further opened with return flow line, and the main part is connected to the return flow line；It is opened up on the valve body
There are the welding hole being connected to the return flow line, the connector to be inserted partially into the welding hole, in the welding hole
Wall forms clearance fit, and is welded in the welding hole by way of stove weldering, mixing soldering or vacuum brazing.
8. heating power expansion valve as claimed in claim 7, it is characterised in that：The outer peripheral wall of the socket part and/or described group
The inner wall in dress portion is partly melted during Laser Welding or argon arc welding, make the socket part outer peripheral wall and described group
The inner wall in dress portion is bonded to each other, and then makes to pass through between the outer peripheral wall of the socket part and the inner wall of the assembled portion
Laser Welding or argon arc welding and form sealing.
9. a kind of manufacturing method of heating power expansion valve, which is characterized in that the heating power expansion valve includes air tank head, valve rod, spool
And valve body, the air tank head include the shell being made of stainless steel, the valve body is made of aluminium alloy and offers inside it
Valve opening；It the described method comprises the following steps：
The connector being made of stainless steel is provided；
The connector is fixedly connected by welding with the valve body；
The spool is mounted on the valve inner, the valve rod is at least partially seated at the valve inner, makes institute
Spool is stated close to the valve opening, one end of the valve rod is close to the spool；
The shell of the air tank head is fixedly connected with the connector by welding manner, and by the another of the valve rod
It supports or is fixed on the air tank head in end.
10. thermal expansion valve manufacturing method as claimed in claim 9, it is characterised in that：The air tank head includes main part, institute
State connector and the valve body stove weldering, mix be brazed or vacuum brazing by way of be fixedly connected；The air tank head it is described
Shell is fixedly connected with the connector by way of argon arc welding or Laser Welding；One end of the valve rod is supported or is fixed on
The bottom of the main part of the air tank head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037528.4A CN108375251B (en) | 2014-12-16 | 2014-12-16 | Thermal expansion valve and manufacturing method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778517.3A CN105758072B (en) | 2014-12-16 | 2014-12-16 | Heating power expansion valve and its manufacturing method |
| CN201810037528.4A CN108375251B (en) | 2014-12-16 | 2014-12-16 | Thermal expansion valve and manufacturing method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410778517.3A Division CN105758072B (en) | 2014-12-16 | 2014-12-16 | Heating power expansion valve and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108375251A true CN108375251A (en) | 2018-08-07 |
| CN108375251B CN108375251B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810037528.4A Active CN108375251B (en) | 2014-12-16 | 2014-12-16 | Thermal expansion valve and manufacturing method thereof |
| CN201410778517.3A Active CN105758072B (en) | 2014-12-16 | 2014-12-16 | Heating power expansion valve and its manufacturing method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410778517.3A Active CN105758072B (en) | 2014-12-16 | 2014-12-16 | Heating power expansion valve and its manufacturing method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854806A (en) * | 2017-11-30 | 2019-06-07 | 浙江三花汽车零部件有限公司 | A kind of expansion valve |
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| GB1313599A (en) * | 1969-11-27 | 1973-04-11 | Danfoss As | Fluid-flow valve |
| US20020100812A1 (en) * | 2001-01-31 | 2002-08-01 | Makoto Sudo | Thermal expansion valve |
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| CN2806907Y (en) * | 2005-06-07 | 2006-08-16 | 浙江三花制冷集团有限公司 | Valve core part capable of preventing noise |
| CN100420887C (en) * | 2005-09-13 | 2008-09-24 | 浙江三花制冷集团有限公司 | Thermal expansion valve |
| JP2012047393A (en) * | 2010-08-26 | 2012-03-08 | Fuji Koki Corp | Expansion valve |
| CN203771825U (en) * | 2014-04-04 | 2014-08-13 | 浙江三花汽车零部件有限公司 | Thermostatic expansion valve and cooling system with the same |
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- 2014-12-16 CN CN201410778517.3A patent/CN105758072B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1313599A (en) * | 1969-11-27 | 1973-04-11 | Danfoss As | Fluid-flow valve |
| US20020100812A1 (en) * | 2001-01-31 | 2002-08-01 | Makoto Sudo | Thermal expansion valve |
| CN2616776Y (en) * | 2003-04-28 | 2004-05-19 | 浙江三花股份有限公司 | Electronic expansion valve cover structure |
| CN2713261Y (en) * | 2004-06-29 | 2005-07-27 | 浙江三花股份有限公司 | Connection structure for valve casing and end cover |
| KR101325838B1 (en) * | 2006-12-20 | 2013-11-05 | 엘지전자 주식회사 | A dryer and capillary tube connecting method for using the same |
| CN101788071A (en) * | 2009-01-23 | 2010-07-28 | 浙江三花制冷集团有限公司 | Reversing valve and manufacturing method thereof |
| CN102102774A (en) * | 2009-12-16 | 2011-06-22 | 邓永林 | Totally-enclosed thermal expansion valve |
| CN102734526A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花股份有限公司 | Refrigeration system and electric valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105758072B (en) | 2018-07-03 |
| CN105758072A (en) | 2016-07-13 |
| CN108375251B (en) | 2020-06-23 |
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