CN101788071A - Reversing valve and manufacturing method thereof - Google Patents
Reversing valve and manufacturing method thereof Download PDFInfo
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- CN101788071A CN101788071A CN200910008560A CN200910008560A CN101788071A CN 101788071 A CN101788071 A CN 101788071A CN 200910008560 A CN200910008560 A CN 200910008560A CN 200910008560 A CN200910008560 A CN 200910008560A CN 101788071 A CN101788071 A CN 101788071A
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Abstract
The invention provides a reversing valve comprising a valve body and end caps sealed on two ends of the valve body, wherein the valve body is provided with a valve inner moving link, the end cap comprises a welding part, the welding part and the inner side of the valve body end part are matched and are welded by fusion welding, and a welding line is formed on the faying surface formed by matching the welding part with the inner side of the valve body end part. When fusion welding is adopted, the end caps and the valve body have high joint strength because the welding part and the valve body end part can be simultaneously melted to obtain the temperature needed by welding. Compared with the prior art, the invention can avoid using brazing filler metal, thus lowering cost; and when the reversing valve is prepared, cooling water is easy to spray because a heat affected zone is small during fusion welding so as to avoid product scrap due to thermal strain of the piston part of the valve body.
Description
Technical field
The present invention relates to valve, be specifically related to a kind of selector valve and preparation method thereof.
Background technique
In heat pump type air conditioner, four-way change-over valve is system's refrigeration cycle operating mode and the critical component that heats the state of cyclic operation conversion.By the switching of four-way change-over valve, realize the mutual conversion of refrigerating/heating.Four-way change-over valve mainly is made up of electromagnetic coil, pilot valve and main valve, and main valve commutates under the acting in conjunction of electromagnetic coil and pilot valve and switches the circulating direction of refrigeration working medium, realizes the mutual conversion of air conditioner refrigerating/heat.
See also Fig. 1, partial sectional view for the four-way change-over valve under the prior art, this selector valve comprises a valve body 101, movable part in the valve is installed in the valve pocket of valve body 101, at the valve body 101 sealed at both ends end caps 103 that are connected with, movable part comprises two piston 12a and the piston rod 12b (end cap and a piston only are shown among the figure) that is connected a piston 12a in the described valve, described end cap 103 comprises the center cap 103a of a projection and is connected center cap edge housing 103b on every side that end cap 103 is connected with valve body by edge housing 103b.In addition, on end cap 103, also be connected with capillary tube 14.
In the prior art,, adopt the mode of crimping that end cap 103 is located by connecting on the valve body 101 earlier, make center cap 103a outside valve pocket, adopt soldering that end cap 103 is welded on the valve body 101 then for end cap 103 and valve body 101 sealings.The welding temperature that needs for end cap and valve body are reached, during welding, the cooperating structure that adopts inductor coil 15 heating valve bodies and end cap is to certain temperature, and 16 fusings of weldering circle are filled in the seam that cooperates between end cap 103 and the valve body 101, reach both purposes of connection.
There is following shortcoming in welding method of the prior art, owing to need to use solder welding end cap and valve body, cost is higher.And owing to need to use the bigger inductor coil of volume to heat, therefore the heat affected zone on end cap and valve body is excessive, has influence on the cooling effect of cooling water.Because the piston cup material in the piston element is generally plastics, fusing point is lower, during the cooling effect difference, is easy to temperature distortion.Therefore under prior art, more product is scrapped because of the piston cup temperature distortion, and a lot of products disconnected weldering also occurs, lack the problem of weldering owing to cooling effect is relatively poor.
Though can consider to use other welding method, the for example method of melting welding such as argon arc welding welding end cap and valve body, thereby avoid usage to answer coil heats, make the spray of cooling water easy to implement, but in the selector valve of prior art, because the whole riveting in end of valve body is on end cap, seam crossing at valve body and end cap, the volume that is heated of end cap is bigger, rapid heat dissipation, it is slow to heat up, when adopting the alternate manner welding, end cap and valve body are difficult to reach simultaneously fusing point, and therefore selector valve of the prior art can only adopt the method for soldering to weld.
Therefore, need improve, to implement to cancel solder, the little welding method in heat affected zone to the structure of selector valve of the prior art.
Summary of the invention
The problem that the present invention solves is to provide a kind of selector valve, in this selector valve, can adopt the welding method of cancellation solder, reduce cost, and the heat affected zone that overcomes in the existing welding method is excessive, the problem that the spray of cooling water is difficult to implement, to avoid problem in the prior art, the problem includes: the problem that causes piston cup distortion owing to the cooling effect difference.The present invention provides a kind of method for preparing this selector valve simultaneously.
In order to solve the problems of the technologies described above, the invention provides a kind of selector valve, comprise the valve body that movable part in the valve is installed, the end cap that is sealed in the valve body two ends, described end cap comprises a weld part, described weld part cooperates with the inboard of valve end and by the melting welding welding, forms weld seam at described weld part and the inboard faying surface place that forms that cooperates of valve end.
Preferably, described weld part is 1: 1.7～1.7: 1 with the thickness ratio of valve end.
Preferably, the edge line of the edge line of described weld part outer side surface and described valve end inner side surface coincides or is close.
Preferably, described melting welding is welded as the welding of electric arc argon welding, laser bonding or High Energy-Dense Beam Welding welding.
Preferably, described end cap comprises the center cap and the edge housing that is connected on the center cap of a projection, and described weld part is specially and is arranged on the boss that the direction outside valve pocket on the edge housing is holded up.
Preferably, the center cap of described end cap is towards the valve pocket outside.
Preferably, housing crimping of described edge or threaded weld are connected on the valve body, and described boss is arranged on the position relative with the end of edge housing.
Preferably, the end by described edge housing positions movable part in the valve.
Preferably, the center cap of described end cap is towards valve pocket inside.
Preferably, described edge subject crimping or be threaded on the valve body, the end of described edge housing is as described boss.
Preferably, by described center cap movable part in the valve is positioned.
The present invention also provides a kind of method for preparing the described selector valve of above arbitrary technological scheme, comprises step:
A) and the valve body employing is threaded or crimping is assembled with end cap;
B) will adopt the melting welding welding with inboard weld part that cooperates of valve end and valve end on the end cap.
Preferably, described end cap comprises the center cap and the edge housing that is connected on the center cap of a projection, and described weld part is specially and is arranged on the boss that the direction outside valve pocket on the edge housing is holded up; When described step a) was specially assembling end cap and valve body, the center cap that makes end cap was positioned movable part in the valve by described center cap towards valve pocket inside.
Preferably, described step b) is specially and adopts boss and the valve body that melting welding will the direction towards valve pocket outside be holded up from the edge housing of end cap to weld.
Preferably, described step b) is specially the end of edge housing is welded as described boss and valve body.
Preferably, in the described step a) during assembling end cap and valve body, the center cap that makes end cap is towards the valve pocket outside, by the end of described edge housing movable part in the valve positioned.
The invention provides a kind of selector valve.The weld part of the present invention by providing one to weld by melting welding with valve body on the end cap of selector valve forms weld seam at weld part and the inboard faying surface place that forms that cooperates of valve end.When adopting the melting welding welding,, reach the needed temperature of welding, therefore have very high join strength by melting welding welding rear valve body and end cap because weld part and valve end can melt simultaneously.Compared with prior art, can avoid using solder, reduce cost, and preparation during this selector valve because the heat affected zone during the melting welding welding is little, therefore make that the spray of cooling water is easy to implement, avoid the piston element temperature distortion of valve body and cause product rejection.
A kind of preferred embodiment in, the boss that described weld part specifically is arranged on the edge housing of end cap and the direction outside valve pocket is holded up, this boss and valve body adopt the melting welding welding.Volume is little because boss is heated, when welding easily and valve body reach the required temperature of melting welding, when therefore adopting the melting welding welding, boss and valve body can reach weld strength preferably, and the heat affected zone the during welding of boss and valve body is little, therefore make that the spray of cooling water is easy to implement, avoid the piston element temperature distortion of valve body and cause product rejection.The present invention also provides a kind of preparation method of selector valve.
The present invention provides a weld part that welds by melting welding with valve body on the end cap of selector valve, the melting welding welding not only can be avoided using solder to reduce cost, and the heat affected zone in melting welding when welding is little, therefore make that the spray of cooling water is easy to implement, avoid the piston element temperature distortion of valve body and cause product rejection.
Description of drawings
Selector valve structural representation under Fig. 1 prior art;
Fig. 2 a is the schematic representation of first kind of mode of execution of selector valve provided by the invention;
Fig. 2 b is the partial schematic diagram of the selector valve among Fig. 2 a;
Fig. 3 a is the schematic representation of second kind of embodiment of selector valve provided by the invention;
Fig. 3 b is the partial schematic diagram of the selector valve among Fig. 3 a;
Fig. 4 a is the schematic representation of the third embodiment of selector valve provided by the invention;
Fig. 4 b is the partial schematic diagram of the selector valve among Fig. 4 a;
Fig. 5 a is the schematic representation of the 4th kind of embodiment of selector valve provided by the invention;
Fig. 5 b is the partial schematic diagram of the selector valve among Fig. 5 a.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
Please refer to Fig. 2 a, the structural representation of the four-way change-over valve that Fig. 2 a provides for first kind of embodiment of the present invention, Fig. 2 a only shows the part-structure of selector valve.Described selector valve 1 comprises valve body 11, and valve body forms through Vehicle Processing, and movable part in the valve is installed in the valve pocket of valve body 11, and the material of this valve body is a metal material, is preferably Cuprum alloy, is more preferably brass.Movable part comprises two piston 12a (piston only is shown among Fig. 2 a) in the described valve, the connecting rod 12b that connects two pistons, described piston moves the circulating direction that switches refrigeration working medium in the valve pocket at valve body under the drive of piston rod, to realize the mutual conversion of air conditioner refrigerating/heat.
Two end seals at valve body are connected with end cap 13 (end cap only is shown among Fig. 2 a), and the material of described end cap is a metal material, is preferably Cuprum alloy, is more preferably brass.End cap please be the partial schematic diagram of end cap among Fig. 2 a and valve body linkage structure simultaneously referring to Fig. 2 b through the punch process moulding.End cap 13 comprise a projection center cap 13a, be connected the edge housing 13b around the center cap, housing 13b is connected end cap 13 with valve body 11 by this edge.On end cap 13, also be welded with capillary tube 14.
In the present embodiment, when assembling end cap and valve body, adopt crimping to connect valve body 11 and edge housing 13b, and make the direction of center cap 13a outside valve pocket.In the end of valve body, process a riveting section 11a, embrace the edge housing 13b of end cap 13 by closing in frock riveting.The end 13d of edge housing forms ledge structure, is used for movable part in the normal valve, and promptly when moving around in the valve pocket of piston 12a at valve body, the end 13d by the edge housing locatees piston 12a.
With end cap with after the valve body crimping is connected, for with valve seal, need further welding end cap 13 and valve body 11, in order to improve welding procedure, on the edge housing 13b position relative with its end 13d, the present invention processes the boss 13c that direction is holded up outside valve pocket, and the thickness of the riveting section 11a of boss 13c thickness and valve end is approaching.When assembling end cap 13 and valve body 11, the inboard of the riveting section 11a of described boss 13c and valve end cooperates, form weld seam 16a at inboard faying surface 16 places that form that cooperate of the riveting section 11a of described boss 13c and valve end, the edge line in the boss 13c outside overlaps at weld seam 16a place substantially with the inside edge line of riveting section 11a.
According to the present invention, the edge line that does not limit the boss 13c outside must coincide with the edge line of valve end inboard, should be pointed out that as long as the edge line in the boss outside adopts the melting welding welding with close mutually boss and the valve body of just can making of the edge line of valve end inboard.
In the present embodiment, the thickness of boss 13c is 1.7mm, and the end portion thickness of valve body is 1mm.By boss 13c is provided, make boss and valve end can be heated to melted state simultaneously, therefore can adopt melting welding welding boss and valve body, preferably, melting welding is electric arc argon welding, laser beam welding or High Energy-Dense Beam Welding, preferred, adopt argon arc welding welding boss 13c and valve body 11, Fig. 2 a shows the position of adopting argon welding tungsten electrode head 15 welding end caps and valve body.
During the selector valve of preparation in the present embodiment, according to following steps:
A) movable part in the valve is installed in valve body 11;
B) adopt the mode of crimping to fit together end cap 13 and valve body 11;
C) adopt argon arc welding welding end cap 13 and valve body 11;
D) capillary tube 14 is welded on the end cap 13;
In step d), can adopt the mode of soldering that capillary tube 14 is welded on the end cap 13.
According to the present invention, for the shape of the center cap of end cap and without particular limitation, center cap can also can be a plane from edge housing upper process.In order to reach the purpose of the surplus valve body of melting welding welding end cap, match with a valve body and weld part by melting welding welding need be set on end cap, described weld part cooperates with the inboard of valve end, and the inboard faying surface place that forms that cooperates forms weld seam at described weld part and valve end.The thickness of weld part and the thickness of valve body are approaching, and preferred, the thickness of weld part is 1: 1.7～1.7: 1 with the ratio of the thickness of valve body, and is preferred, and the thickness of weld part is 1.7mm, and the thickness of valve end is 1mm.In the present embodiment, by processing direction is holded up outside valve pocket boss as weld part on the edge of end cap housing, for weld part, other implementations can also be arranged, narration specifically vide infra.
According to the present invention, earlier with end cap 13 with after valve body 11 crimping are connected, end cap 13 and valve body 11 are welded in employing melting welding.Compare with valve body with employing soldering welding end cap of the prior art, the method for welding selector valve provided by the invention not only can avoid using solder, saves cost.And, therefore make that the spray of cooling water is easy to implement because the heat affected zone when welding boss and valve body is little, and can guarantee cooling effect, avoid the temperature distortion of valve inner member and cause the situation of product rejection to take place.
See also Fig. 3 a, Fig. 3 a is the schematic representation of second kind of embodiment of four-way change-over valve provided by the invention.In the present embodiment, the end cap in first kind of mode of execution and the linkage structure of valve body are improved, and shown in Fig. 3 a, selector valve 2 comprises the valve body 21 of Vehicle Processing moulding, movable part in the valve is installed in the valve pocket of valve body 21, and the material of valve body 21 is a brass.Movable part comprises piston 12a and the connecting rod 12b that is connected piston in the valve, in the present embodiment, the structure of piston and connecting rod have with first kind of mode of execution in piston and the identical structure of connecting rod.
Be sealedly connected with end cap 23 (end cap only is shown among Fig. 3 a) in two ends of valve body, the material of end cap 23 is a brass.End cap 23 adopts punch process to form.End cap 23 comprises the center cap 23a of a projection, is connected the center cap edge housing 23b that cooperates with valve end on every side.On end cap 23, be welded with capillary tube 14.
In the present embodiment, when assembling end cap 23 and valve body 21, be, adopt screw connection structure to connect the edge housing 23b and the valve body 21 of end cap 23 with the difference of first kind of mode of execution.Shown in Fig. 3 b, be the schematic representation of end cap among Fig. 3 a and the screw connection structure between the valve body.Be specially, on described edge housing 23b, be processed with the screw section 23c that is threaded with valve body 21, corresponding, be processed with screw 21a with screw section 23c screw-thread fit at valve end.The relative position of end cap 23 and valve body 21 is adjusted by the position, angle of screw section 23c and screw 21a.
When assembling end cap 23 and valve body 21, make center cap 23a towards the valve pocket outside.Connect in order to help implementing melting welding, on position relative with screw section 23c on the edge of the end cap 23 housing 23b, process the boss 23d that the direction outside valve pocket is holded up, the thickness of boss 23d is 1.5: 1 with the ratio of the thickness of valve end.
Between the boss 23d of the edge housing on the end cap 23 and screw section 23c, form first step 23e, accordingly, on valve body, be processed with and second step 21c that this first step matches, second step 21c on the valve body is connected with tapped hole 21a, and end cap 23 positions with contacting of second step 21c by first step 23e.In addition, the end face of the screw section 23c of end cap 23 can the interior movable part of normal valve.
The end face of valve body 21 is a Spielpassung to the inboard boss 23d with end cap of the valve end 21b between the second step 21c, form weld seam 26a at inboard faying surface 26 places that form that cooperate of boss 23d and valve end 21b, the edge line of boss 23d outer side surface overlaps at weld seam 26a place substantially with the edge line of valve end 21b inner side surface.After end cap 23 and valve body 21 assemblings, adopt melting welding welding boss 23d and valve body 21 with valve seal, preferred, the employing argon arc welding is with boss 23d and valve body 21 welding.Fig. 3 a shows the position of adopting argon arc tungsten electrode head welding end cap 23 and valve body 21.
During the selector valve of preparation in the present embodiment, according to following steps:
A) movable part in the valve is installed in valve body 21;
B) adopt the mode that is threaded to fit together with valve body 21 end cap 23;
C) adopt argon arc welding welding end cap 23 and valve body 21;
D) capillary tube 24 is welded on the end cap 23;
In step d), can adopt the mode of soldering that capillary tube 24 is welded on the end cap 23.
In the present embodiment, adopt worm structure to connect end cap and valve body earlier, end cap can be positioned on the valve body.And, be processed with the boss of outside valve pocket, holding up on the end cap, this boss and valve end Spielpassung, the thickness of boss and the thickness of valve end are approaching, and the edge line of the edge line of boss outer side surface and described valve end inner side surface coincides or is close.
When the mode of employing melting welding was welded, boss was easy to concentrate heat and valve body to melt simultaneously, therefore can reach weld strength preferably.The advantage of present embodiment is identical with the advantage of first kind of mode of execution, can both save solder, and can avoid producing the problem that causes movable part temperature distortion in the excessive valve that brings in heat affected zone owing to adopting the inductor coil heating.
Selector valve provided by the invention also has other implementation.
See also Fig. 4 a, be the schematic representation of the third embodiment of selector valve provided by the invention, Fig. 4 a only shows the part-structure of selector valve.In the present embodiment, selector valve 3 comprises the valve body 31 that Vehicle Processing forms, and movable part in the valve is installed in the valve pocket of valve body 31, and the material of described valve body 31 is a brass.Movable part comprises two piston 12a (piston only is shown among Fig. 4 a) and the connecting rod 12b that is connected two pistons in the valve, in the present embodiment, the structure of piston and connecting rod have with first kind of mode of execution in piston and the identical structure of connecting rod.
Two end seals at valve body are connected with end cap 33 (end cap only is shown among Fig. 4 a), and the material of described end cap is a brass.End cap adopts punch process to form.End cap 33 comprises the center cap 33a of a projection, is connected center cap edge housing 33b on every side, and end cap 33 is connected with valve body 41 by edge housing 33b.
In the present embodiment, when assembling end cap 33 and valve body 31, adopt crimping to connect valve body 31 and edge housing, and make the direction of center cap 33a in valve pocket, movable part in the valve is positioned by center cap 33a.In addition, capillary tube 14 is welded on the valve body 31.
Please be the partial schematic diagram of end cap among Fig. 4 a and valve body linkage structure simultaneously referring to Fig. 4 b.In the present embodiment, do not process the boss that the direction outside valve pocket is holded up in addition.Owing to when assembling end cap 33 and valve body 31, make the direction of center cap 33a in valve pocket, therefore, contact with valve body as boss with the end 33c of edge housing 33b.
In the present embodiment, the thickness of housing 33b end, edge 33c to the ratio with the thickness of the end 31a of valve body is 1: 1.5, the end 33c of edge housing is cooperated with the interior side direction of valve end 31a, and form weld seam 36a at edge shell end 33c and inboard faying surface 36 places that form that cooperate of valve end 31a, the edge line of edge shell end 33c outer side surface overlaps at weld seam 36a place substantially with the edge line of valve end 31a inner side surface.Because edge shell end 33c is easy to concentrate heat, when therefore adopting melting welding welded edge shell end and valve body, edge shell end and valve end can melt simultaneously and can weld together preferably.
During the selector valve of preparation in the present embodiment, according to following steps:
A) movable part in the valve is installed in valve body 31;
B) adopt the mode of crimping to fit together end cap 33 and valve body 31;
C) adopt argon arc welding welding end cap 33 and valve body 31;
D) capillary tube 14 is welded on the valve body 31.
In step d), can adopt the mode of soldering that capillary tube 14 is welded on the valve body 31.In addition, for step d), also can after step a), carry out.Fig. 4 a shows the position of adopting argon arc tungsten electrode head welding end cap 33 and valve body 31.
In the third kind mode of execution, end cap 33 oppositely is installed on the valve body,, movable part in the valve is positioned as the weld part that matches with the valve end inboard by the end 33c of the edge housing 33b of end cap by the center cap of end cap.
Compare with first kind of mode of execution, saved the operation of independent processing boss, in the present embodiment, the thickness of edge housing and valve end thickness are approaching, and the inboard faying surface place that forms that cooperates forms weld seam at the valve end of edge shell end.When adopting the melting welding welding, edge shell end and valve body can melt the weld strength that reaches very high simultaneously.The melting welding welding is preferably the argon arc welding welding.Compare with soldering, selector valve provided by the invention has not only been saved solder, help saving cost, and boss and valve body heat affected zone are little when adopting the melting welding welding, thereby therefore can avoid the heating of usage hachure circle to cause that the heat affected zone is excessive to cause the generation that the movable part temperature distortion causes selector valve to scrap in the valve.
See also Fig. 5 a, Fig. 5 a is the schematic representation of the 4th kind of embodiment of selector valve provided by the invention.Identical with aforementioned embodiments, selector valve 4 also comprises the valve body 41 of Vehicle Processing moulding, and movable part in the valve is installed in valve body 41, and the material of valve body 41 is a brass.Movable part comprises two piston 12a (piston only is shown among the figure) and the connecting rod 12b that is connected two pistons in the valve.
Be sealedly connected with end cap 43 (Fig. 5 a only illustrates an end cap) in two ends of valve body, the material of end cap 43 is a brass.Valve body forms through Vehicle Processing, and end cap adopts punch process one-body molded, end cap 43 comprise a projection center cap 43a, be connected the edge housing 43b around the center cap, end cap 43 is connected with valve body 41 by edge housing 43b.
In the present embodiment, when assembling end cap 43 and valve body 41, make center cap 43a, movable part in the valve in the valve pocket is positioned by center cap towards valve pocket inside.The edge housing 43b of end cap 43 adopts to be threaded with valve body 41 ends end cap is located.Please be simultaneously referring to Fig. 5 b, partial enlarged drawing for edge housing 43b among Fig. 5 a and valve body 41 linkage structures, edge housing 43b comprises an external thread part 43c, correspondingly, on valve body 41, be processed with and this external thread part 43c to the tapped hole 41a that cooperates, the mutual alignment of end cap 43 and valve body 41 is adjusted by the position, angle of screw thread.
For end cap is located, on edge housing 43b, also be processed with the first step 43d that is connected with external thread part 43c, accordingly, on valve body, also be processed with and second step 41b that this first step matches, when being screwed in end cap 43 on the valve body 41, first step 43d is with after second step 41b contacts, with end cap 43 location.
In the present embodiment, on the edge shell, do not process the boss of the direction projection outside valve pocket in addition separately, but with the end of edge shell as boss, edge shell end 43e is 1.7: 1 with the thickness ratio of valve end 41c.
During assembling, make the inboard Spielpassung of edge shell end 43e and valve end 41c, form weld seam 46a at edge shell end 43e and inboard faying surface 46 places that cooperate of valve end 41c, the edge line of edge shell end outer side surface overlaps at weld joint 46e substantially with the edge line of valve end inner side surface.In addition, the center cap in valve pocket of end cap is used for movable part in the valve is positioned.
During the selector valve of preparation in the present embodiment, according to following steps:
A) movable part in the valve is installed in valve body 41;
B) end cap 43 and valve body 41 are fitted together by thread set;
C) adopt argon arc welding welding end cap 43 and valve body 41;
D) capillary bar 14 is welded on the valve body 41.
In step d), can adopt the mode of soldering that capillary tube 14 is welded on the valve body 41.In addition, for step d), also can carry out after step a), Fig. 5 a shows the position of adopting argon arc tungsten electrode head welding end cap 43 and valve body 41.
In the present embodiment, end cap 43 oppositely is installed on the valve body 41, as the boss that matches with valve body, movable part in the valve is positioned by the center cap of end cap by the end of the edge housing 43b of end cap 43.
Compare with the third mode of execution, saved the operation of independent processing boss, when adopting melting welding to weld, the edge shell end is easy to concentrate heat, therefore can melt simultaneously with valve end and reach weld strength preferably.Compare with soldering, selector valve provided by the invention has not only been saved solder, help saving cost, and because boss and valve body heat affected zone are little, thereby therefore can avoid usage to answer coil heats and cause that the heat affected zone is excessive to cause that the movable part temperature distortion causes selector valve to scrap in the valve.
More than selector valve provided by the present invention and the method for preparing described selector valve are described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (16)
1. selector valve, it is characterized in that, comprise the valve body that movable part in the valve is installed, the end cap that is sealed in the valve body two ends, described end cap comprises a weld part, described weld part cooperates with the inboard of valve end and by the melting welding welding, forms weld seam at described weld part and the inboard faying surface place that forms that cooperates of valve end.
2. selector valve according to claim 1 is characterized in that the described weld part and the thickness ratio of valve end are 1: 1.7～1.7: 1.
3. selector valve according to claim 1 is characterized in that the edge line of described weld part outer side surface and the edge line of described valve end inner side surface coincide or be close.
4. selector valve according to claim 1 is characterized in that described melting welding is welded as the welding of electric arc argon welding, laser bonding or High Energy-Dense Beam Welding welding.
5. according to each described selector valve of claim 1 to 4, it is characterized in that described end cap comprises the center cap and the edge housing that is connected on the center cap of a projection, described weld part is specially and is arranged on the boss that the direction outside valve pocket on the edge housing is holded up.
6. selector valve according to claim 5, the center cap that it is characterized in that described end cap is towards the valve pocket outside.
7. selector valve according to claim 6 is characterized in that the housing crimping of described edge or is threaded on the valve body that described boss is arranged on the position relative with the end of edge housing.
8. selector valve according to claim 7 is characterized in that by the end of described edge housing movable part in the valve being positioned.
9. selector valve according to claim 5, the center cap that it is characterized in that described end cap is towards valve pocket inside.
10. selector valve according to claim 9 is characterized in that the housing crimping of described edge or is threaded on the valve body that the end of described edge housing is as described boss.
11. selector valve according to claim 10 is characterized in that by described center cap movable part in the valve being positioned.
12. a method for preparing each described selector valve of claim 1 to 11 comprises step:
A) and the valve body employing is threaded or crimping is assembled with end cap;
B) will adopt the melting welding welding with inboard weld part that cooperates of valve body and valve end on the end cap.
13. method according to claim 12 is characterized in that described end cap comprises the center cap and the edge housing that is connected on the center cap of a projection, described weld part is specially and is arranged on the boss that the direction outside valve pocket on the edge housing is holded up; When described step a) was specially assembling end cap and valve body, the center cap that makes end cap was positioned movable part in the valve by described center cap towards valve pocket inside.
14. method according to claim 11 is characterized in that described step b) is specially to adopt boss and the valve body that melting welding will the direction towards valve pocket outside be holded up from the edge housing of end cap to weld.
15. method according to claim 12 is characterized in that described step b) is specially the end of edge housing as described boss and valve body welding.
16. method according to claim 11, when it is characterized in that in the step a) assembling end cap and valve body, the center cap that makes end cap is towards the valve pocket outside, by the end of described edge housing movable part in the valve positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910008560A CN101788071A (en) | 2009-01-23 | 2009-01-23 | Reversing valve and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910008560A CN101788071A (en) | 2009-01-23 | 2009-01-23 | Reversing valve and manufacturing method thereof |
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| CN101788071A true CN101788071A (en) | 2010-07-28 |
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| CN200910008560A Pending CN101788071A (en) | 2009-01-23 | 2009-01-23 | Reversing valve and manufacturing method thereof |
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| CN (1) | CN101788071A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588627A (en) * | 2011-01-06 | 2012-07-18 | 浙江三花制冷集团有限公司 | Air-conditioning reversing valve and air-conditioning system |
| CN103256417A (en) * | 2012-02-16 | 2013-08-21 | 浙江三花制冷集团有限公司 | Four-way reversing valve and refrigerating system |
| CN104043901A (en) * | 2014-06-19 | 2014-09-17 | 华侨大学 | Stainless steel water faucet shell welding technology |
| CN104214394A (en) * | 2013-06-05 | 2014-12-17 | 浙江盾安禾田金属有限公司 | Valve body cover and valve |
| CN104235464A (en) * | 2013-06-09 | 2014-12-24 | 浙江盾安禾田金属有限公司 | Switch valve |
| CN108375251A (en) * | 2014-12-16 | 2018-08-07 | 浙江三花汽车零部件有限公司 | Heating power expansion valve and its manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3004557A (en) * | 1957-05-29 | 1961-10-17 | Alco Valve Co | Four-way change-over valve |
| JP2006017303A (en) * | 2004-06-29 | 2006-01-19 | Zhejiang Sanhua Co Ltd | Valve element |
-
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- 2009-01-23 CN CN200910008560A patent/CN101788071A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3004557A (en) * | 1957-05-29 | 1961-10-17 | Alco Valve Co | Four-way change-over valve |
| JP2006017303A (en) * | 2004-06-29 | 2006-01-19 | Zhejiang Sanhua Co Ltd | Valve element |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588627A (en) * | 2011-01-06 | 2012-07-18 | 浙江三花制冷集团有限公司 | Air-conditioning reversing valve and air-conditioning system |
| CN102588627B (en) * | 2011-01-06 | 2015-08-05 | 浙江三花制冷集团有限公司 | A kind of air conditioning reversing valve and air-conditioning system |
| CN103256417A (en) * | 2012-02-16 | 2013-08-21 | 浙江三花制冷集团有限公司 | Four-way reversing valve and refrigerating system |
| CN104214394A (en) * | 2013-06-05 | 2014-12-17 | 浙江盾安禾田金属有限公司 | Valve body cover and valve |
| CN104235464A (en) * | 2013-06-09 | 2014-12-24 | 浙江盾安禾田金属有限公司 | Switch valve |
| CN104043901A (en) * | 2014-06-19 | 2014-09-17 | 华侨大学 | Stainless steel water faucet shell welding technology |
| CN104043901B (en) * | 2014-06-19 | 2016-02-24 | 华侨大学 | A kind of stainless steel faucet case weld technique |
| CN108375251A (en) * | 2014-12-16 | 2018-08-07 | 浙江三花汽车零部件有限公司 | Heating power expansion valve and its manufacturing method |
| CN108375251B (en) * | 2014-12-16 | 2020-06-23 | 浙江三花汽车零部件有限公司 | Thermal expansion valve and manufacturing method thereof |
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Application publication date: 20100728 |