CN101852300B - A kind of solenoid directional control valve - Google Patents
A kind of solenoid directional control valve Download PDFInfo
- Publication number
- CN101852300B CN101852300B CN201010200704.5A CN201010200704A CN101852300B CN 101852300 B CN101852300 B CN 101852300B CN 201010200704 A CN201010200704 A CN 201010200704A CN 101852300 B CN101852300 B CN 101852300B
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- lining
- capillary tube
- valve body
- directional control
- solenoid directional
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- 239000000463 material Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 abstract description 14
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 238000012876 topography Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000004904 shortening Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of solenoid directional control valve for heat pump-type idle call in refrigeration system, it comprises end cap, valve body, lining and capillary tube, the lining of the solenoid directional control valve of prior art and capillary tube are straight tube structure, and lining of the present invention or capillary tube are the variable-diameter structure of ladder tubular formula, capillary tube makes the clearance portion forming buffer memory solder between the outer wall of capillary tube and the inwall of lining after inserting lining, therefore the weldering of capillary tube is effectively avoided to block up phenomenon, this structure can shorten the stretching height of end cap, the decay resistance of end cap is improved, the length of valve body and capillary tube can be shortened simultaneously, make the assembling of product easier, thus greatly cost of production is reduced while guarantee quality of product.
Description
Technical field
The invention relates to fluid control component in a kind of refrigeration system, control the solenoid directional control valve of the refrigerant flow direction in particular for heat pump type air conditioner.
Background technique
For the solenoid directional control valve that fluid in the refrigeration systems such as air-conditioning, refrigerating machine, water heater controls, it comprises valve body, lining, capillary tube and end cap.Fig. 1 is the topography schematic diagram of the solenoid directional control valve of prior art, and Fig. 2 is the structural representation of Fig. 1 electromagnetic switch valve liner, and Fig. 3 is the welded structure schematic diagram of Fig. 1 electromagnetic switch valve liner and capillary tube.As shown in fig. 1, the wherein internal diameter of lining 102 and the major diameter fit of capillary tube 103, be used for fixing capillary tube 103, the external diameter of lining and the apertures of valve body 105 flanging bore, lining is crimped in the flanging bore of valve body 105, lining and valve body, lining and capillary tube all adopt the mode of welding to be fixedly connected with.As shown in Figure 2, prior art lining and capillary tube are straighttube-type structure to the bush structure of existing scheme, and therefore capillary tube must adopt and insert valve body and the mode exceeding lining certain altitude h1, capillary tube inserted mode as shown in Figure 3.If capillary tube inserts lining postcapillary port surface lower than lining port surface, then between capillary tube and lining by capillarity by solder constantly to weld seam absorbed inside, therefore solder will, along Capillary towards the flowing of capillary tube endoporus, finally may cause capillary tube to produce the stifled phenomenon of weldering.
Solenoid directional control valve shown in Fig. 3, after capillary tube exceeds lining h1, in Fig. 1, end cap 101 structure of the solenoid directional control valve of prior art just must consider spatial structure, end cap 101 and capillary tube 103 are not interfered after mounting, end cap must have certain height, make the clearance space having m size between end cap and capillary tube, and end cap and the end face of valve body 105 are the modes adopting argon arc welding to weld, therefore both ends of the surface must keep concordant, the length L of such valve body certainly will change along with the variation of end cap, thus result in end cap, valve body, capillary tube three parts all must have certain length.Owing to having leaf spring between slide block and connecting rod, need during assembling with hand pin slide block to assemble avoid slide block to eject after and seating position interfere and cause filling and do not enter, and the position pinning slide block can only reach valve body oral area, therefore valve body is longer, slide block assembling time from valve seat distance more away from, cause the assembling of connecting rod and slide block more difficult.
And end cap is deep drawing part, if excessive height, then while causing local wall thickness after excessive tensile thinning, internal stress increases, thus causes the intensity of end cap to decline, and anticorrosion stress-resistant performance also declines, and affects intensity and the working life of whole solenoid directional control valve.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition be solve end cap height excessive after, cause end cap intensity and decay resistance to decline and the more long problem being more not easy assembling of valve body.The present invention is by the following technical solutions for this reason:
Solenoid directional control valve of the present invention, comprise main valve and pilot valve, wherein the valve body two ends of main valve are connected by lining, capillary tube with between pilot valve, described valve body two ends are also provided with end cap, it is characterized in that: described lining and described capillary tube at least one are provided with variable-diameter structure, in the flanging bore of one end press-in valve body of lining, capillary tube inserts in lining from the other end of lining, thus is formed with clearance portion between the inwall making capillary tube stretch into the port part in the outer wall of the port part in lining and the press-in valve body flanging bore of lining.
Optionally, described variable-diameter structure length direction at least comprises two kinds of different tube diameters, connected by cone connection transition between two kinds of different tube diameters.
Preferential, described variable-diameter structure is arranged on described capillary tube, and the material of described capillary tube adopts red copper, and the mode near the reducing of port position straight tube is processed and made it be formed with the relatively little choke of caliber and cone connection.
Preferential, the internal diameter d >=1mm of the choke of described capillary tube, the outside diameter d 0 >=2mm of capillary tube.
Preferential, the external diameter of described lining matches with the aperture of the flanging bore on described valve body, and the outside diameter d 0 of the straight pipe portion that the internal diameter of described lining is relatively large with described capillary tube caliber matches.
Preferential, described variable-diameter structure is arranged on described lining, and the material of described lining adopts red copper, and the mode of one end straight tube enlarging of lining is processed and made it be formed with the relatively large expansion mouth of caliber and cone connection.
Preferential, the expansion mouth external diameter of described lining (202) matches with the aperture of the flanging bore on described valve body, and the internal diameter of the other end pipe with small pipe diameter of described lining matches with the outside diameter d 0 of capillary tube.
Preferential, described lining, capillary tube are provided with variable-diameter structure, the external diameter of the Large Diameter Pipeline of described lining variable-diameter structure matches with the aperture of the flanging bore on described valve body, and the outside diameter d 0 of the straight tube that the internal diameter of the pipe with small pipe diameter of the other end of described lining is relatively large with the caliber of described capillary tube matches.
Preferential, the port surface in described lining press-in valve body flanging bore is not higher than the internal face of described valve body.
Preferential, the described capillary tube port surface inserted in described lining is no more than the internal face of described valve body.
Preferential, the flange height h of described valve body flanging bore is: 0.5mm≤h≤1.5mm.
Preferential, the gap width of described clearance portion does not exceed the scope of 0.1mm ~ 1.5mm, clearance height H >=2mm.
The invention has the beneficial effects as follows: by structural reformed AHP, lining or capillary tube is made to be provided with variable-diameter structure, capillary tube inserts between the outer wall of lining postcapillary and the inwall of lining and is formed with clearance portion, the stifled phenomenon of capillary tube weldering that when effectively stopping to weld, flow of solder material causes, improves the quality of products.
Accompanying drawing illustrates:
Fig. 1: be the topography schematic diagram of a kind of solenoid directional control valve of prior art;
Fig. 2: be the structural representation of the lining of Fig. 1 solenoid directional control valve;
Fig. 3: be the structural representation of the local of the capillary tube of Fig. 1 solenoid directional control valve, lining and valve body connection part;
Fig. 4: be the Topographic structural representation of solenoid directional control valve first embodiment of the present invention;
Fig. 5: be the structural representation of the lining of Fig. 4 solenoid directional control valve;
Fig. 6: be the structural representation at the lining of Fig. 4 solenoid directional control valve, capillary tube and valve body position;
Fig. 7: be the structural representation of the lining of the second embodiment of solenoid directional control valve of the present invention, capillary tube and valve body;
Fig. 8: be the partial structurtes schematic diagram of the Capillary port part of solenoid directional control valve second embodiment of the present invention;
Fig. 9: be the topography schematic diagram of solenoid directional control valve second embodiment of the present invention.
Figure 10: be the structural representation of the lining of solenoid directional control valve of the present invention 3rd embodiment, capillary tube and valve body;
Symbol description in figure:
101-end cap, 102-lining, 103-capillary tube, 104-piston element, 105-valve body, 106-brazed portion; 201-end cap, 202,302-lining, 203,303-capillary tube, 204-clearance portion, 205-valve body, 2021-expansion mouth, 2023-main body portion, 2031-choke, 2051-valve interior wall face, 2022,3022-lining port surface, 2032,3032-Capillary actinal surface.
Embodiment
In order to make those skilled in the art person understand this programme better, be described in further detail below in conjunction with drawings and embodiments.
Solenoid directional control valve comprises main valve and pilot valve, pilot valve is also fixed with electromagnetic coil (not shown in FIG.), wherein the valve body two ends of main valve are provided with end cap, be connected by lining, capillary tube between valve body two ends and two capillaries of pilot valve, valve inner is provided with connecting rod, the two ends of connecting rod are provided with piston element, connecting rod intermediate portion is also provided with slide block, leaf spring is provided with between slide block and connecting rod, the inner chamber of valve body is divided into three chambeies by piston element, and wherein two chambeies at two ends are connected with two capillaries of pilot valve respectively.The present invention relates generally to the improvement of the connecting arrangement of lining and capillary tube, thus causes end cap stretching height, body length and capillary pipe length to shorten accordingly.
Fig. 4 is the Topographic structural representation of solenoid directional control valve first embodiment of the present invention, and Fig. 5 is the bush structure schematic diagram of Fig. 4 solenoid directional control valve, and Fig. 6 is the structural representation at the lining of Fig. 4 solenoid directional control valve, capillary tube and valve body position.As shown in Figure 4, the valve body 205 of solenoid directional control valve is circular pipe, and the pipe end place at two ends is provided with flanging bore, and the flange height h of flanging bore is: 0.5mm≤h≤1.5mm, matches with the outer diameter D 2 of the expansion mouth 2021 of lining 202 in the aperture of flanging bore.
As shown in Figure 5, the lining 202 of solenoid directional control valve of the present invention is for having variable-diameter structure, its length direction have two sections of different tube diameters: expansion mouth 2021, main body portion 2023, the pipe part of two kinds of different tube diameters is adopted in the present embodiment, employing material is that the straight tube of red copper carries out the expansion mouth 2021 that flaring processing forms lining, the external diameter of expansion mouth is D2, internal diameter is D1, the other end is the main body portion 2023 of pipe with small pipe diameter, the internal diameter of main body portion 2023 is d1, external diameter is d2, is connected between two sections of different tube diameters by a conical pipe section transition.
As shown in Figure 6, the expansion mouth 2021 of lining 202 is pressed into by crimping in the flanging bore of valve body 205, after both crimp also fixation, capillary tube 303 is inserted in lining from the relatively little port of the other end caliber of lining 202 and main body portion 2023, particularly, the external diameter of capillary tube 303 matches with the internal diameter d1 of sleeve body portion 2023, and the compression distance of capillary tube 303 is ensured by the small stair portion arranging a location on capillary tube 303.In order to ensure that lining can not interfere the end cap 201 in valve body 205 and piston element 104, described lining 202 is pressed into port surface 2022 in valve body flanging bore not higher than the internal face 2051 of described valve body; Further, described capillary tube 303 port surface 3032 inserted in described lining can also be made to be no more than the internal face 2051 of described valve body, like this, also can not interfere even if piston element 104 extends to the place relative with capillary tube 303 position in valve body.Thus, clearance portion 204 is formed between the inwall that capillary tube 303 in Fig. 4 stretches into the expansion mouth 2021 in the outer wall of the port part of the close port surface 3032 in lining 202 and the press-in valve body flanging bore of lining, gap width dimension 0.1mm≤(D1-d1)/2≤1.5mm, the clearance height H >=2mm of clearance portion.If the gap width dimension of clearance portion is less than 0.1mm, does not then reach and stop solder capillarity and stop the object of flowing, and if the gap width dimension of clearance portion is greater than 1.5mm, then can cause lining enlarging relative difficulty; Equally, as long as clearance height H is at more than 2mm, just can reach the object stoping flow of solder material, solder would not be caused to block the problem of the capillary tube mouth of pipe.
Stove can be adopted between lining 202 and the flanging bore of valve body 205 to weld or the welding manner such as soldering welds, generally then be welded by wire feed gas brazing between capillary tube with lining.Particularly, be generally at lining 202 and valve body 205 by after being welded and fixed, then be pressed into capillary tube, and to carry out sealing fixing by welding by capillary tube and lining 202.
Fig. 7, Fig. 8, Fig. 9 are the structural representation of solenoid directional control valve second embodiment of the present invention, Fig. 9 is the topography schematic diagram of solenoid directional control valve second embodiment of the present invention, Fig. 8 is the partial structurtes schematic diagram of the Capillary port part of Fig. 9 solenoid directional control valve, and Fig. 7 is the structural representation of the lining of Fig. 9 solenoid directional control valve, capillary tube and valve body.As shown in Figure 8, in solenoid directional control valve of the present invention, variable-diameter structure is arranged on capillary tube 203, particularly, capillary tube 203 port is undergauge structure, the material of capillary tube 203 described in the present embodiment adopts red copper, mode near the reducing of port position straight tube is processed and is made it be formed with the relatively little choke of caliber 2031, the internal diameter of described choke 2031 is d, and d >=1mm, to meet the requirement of through-current capacity between pilot valve and main valve, the external diameter of the straight pipe portion that described capillary tube 203 caliber is relatively large is d0, and d0 >=2mm.The lining 302 of straighttube-type is adopted in the present embodiment, as shown in Figure 7, the internal diameter of described lining 302 matches with the outside diameter d 0 of capillary tube, the external diameter of lining matches with the aperture of the flanging bore on valve body 205, similarly, described lining 302 is pressed into port surface 3022 in valve body flanging bore not higher than the internal face 2051 of described valve body, described capillary tube 203 port surface 2032 inserted in described lining can also be made in addition to be also no more than the internal face 2051 of described valve body, like this, capillary tube 203 and lining 302 all can not with the end caps in valve body, the interferences such as piston element, thus the height reduction of end cap can be made, and the length of valve body is also minimized.Clearance portion 204 is formed between the inwall that capillary tube 203 stretches into the port part in the outer wall of the port part in lining 302 and the press-in valve body flanging bore of lining 302, identical with above-mentioned mode of execution, gap width dimension 0.1mm≤(d0-d)/2≤1.5mm scope of clearance portion, clearance height >=2mm.All the other structures of solenoid directional control valve are substantially identical with previous embodiment, do not repeat them here.
Figure 10 is the structural representation of the lining of solenoid directional control valve of the present invention 3rd embodiment, capillary tube and valve body, and the topography schematic diagram of solenoid directional control valve does not draw.As shown in FIG., lining 202 and the capillary tube 203 of variable-diameter structure is adopted in the present embodiment, namely lining 202 and capillary tube 203 all have variable-diameter structure, particularly, match with the external diameter of the expansion mouth of lining 202 in the aperture of the flanging bore of valve body 205, the outside diameter d 0 of the straight pipe portion that capillary tube 203 caliber is relatively large matches with the internal diameter d1 of the little tube opening of lining, and described lining 202 is pressed into port surface 2022 in valve body flanging bore not higher than the internal face 2051 of described valve body, described capillary tube 203 port surface 2032 inserted in described lining can also be made in addition to be no more than the internal face 2051 of described valve body.All the other structures of solenoid directional control valve are substantially identical with first two embodiment, do not repeat them here.The advantage of the present embodiment is respectively by the flaring structure on lining 202 and capillary tube 203 and throat structure, makes the enlarging amount on lining 202 and capillary tube 203 and degree of choke can be relatively little, thus the amount of deformation both reducing, ensure the stability of material; And when same amount of deformation, realize the gap of relatively large clearance portion, guarantee that solder can not flow to port surface 2022 position of the mouth of pipe of capillary tube 203.
In above-mentioned three kinds of embodiments, clearance portion 204 is formed between the inwall of the port of the lining of press-in valve inner and the outer wall inserting the capillary tube in lining, when lining welds with capillary tube, clearance portion 204 becomes the buffer zone of solder, solder also effectively can be avoided to enter capillary tube inner wall or port and cause weldering stifled or make the phenomenons such as the underfed in capillary tube because solder exists when solder adds more.Control the amount of solder of adding in addition, then the generation of phenomenon is blocked up in the weldering can stopping capillary tube completely again, solves the unmanageable problem of solder adding quantity in welding procedure, improves reliability and the conformity of stability and the solenoid directional control valve welded.
In the above-described embodiments, port surface in described lining press-in valve body flanging bore is not higher than the internal face 2051 of described valve body, such lining can not interfere with end cap, piston element, end cap, piston element no longer need gap that is reserved and lining, like this, end cap, piston element do not need gap that is reserved and lining, thus can shorten the stretching height of end cap, and the corresponding length shortening valve body; The described capillary tube port surface inserted in described lining is no more than the internal face 2051 of described valve body equally in addition, namely do not stretch in the space of valve body, like this, capillary tube can not interfere with end cap, piston element, end cap, piston element also no longer need gap that is reserved and capillary tube, therefore the length of capillary tube and the stretching of end cap highly all can shorten, just the impact considering lining and capillary tube is not needed during the design of end cap, piston element, as long as and design according to the requirement of product, also correspondingly reduce design difficulty like this.Further, the length of valve body also can correspondingly shorten concordant with end cap, the cost of material of solenoid directional control valve can be saved like this, shortening of another aspect end cap stretching height, the internal stress of end cap correspondingly reduces, the decay resistance of end cap is effectively improved, and shortening due to valve body 205 length, makes the assembling of solenoid directional control valve easier simultaneously.
Content described in this specification embodiment just enumerating inventive concept way of realization, protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment states, comprises other similar form yet.In addition, the noun of locality such as inside and outside, high and low mentioned in the present invention is just quoted for convenience of description, and is not limitation of the present invention.
Claims (12)
1. a solenoid directional control valve, comprise main valve and pilot valve, wherein the valve body two ends of main valve are connected by lining, capillary tube with between pilot valve, described valve body two ends are also provided with end cap, it is characterized in that: described lining and described capillary tube at least one are provided with variable-diameter structure, in the flanging bore of one end press-in valve body of lining, capillary tube inserts in lining from the other end of lining, thus is formed with clearance portion between the inwall making capillary tube stretch into the port part in the outer wall of the port part in lining and the press-in valve body flanging bore of lining; The intracavity inter-connection of described clearance portion and described valve body, the outer wall of described capillary tube is provided with the small stair portion for locating.
2. solenoid directional control valve according to claim 1, is characterized in that: described variable-diameter structure length direction at least comprises two kinds of different tube diameters, is connected between two kinds of different tube diameters by cone connection transition.
3. solenoid directional control valve according to claim 2, it is characterized in that: described variable-diameter structure is arranged on described capillary tube, the material of described capillary tube adopts red copper, and the mode near the reducing of port position straight tube is processed and made it be formed with the relatively little choke of caliber and cone connection.
4. solenoid directional control valve according to claim 3, is characterized in that: the internal diameter d >=1mm of the choke of described capillary tube, the outside diameter d 0 >=2mm of capillary tube.
5. solenoid directional control valve according to claim 3, is characterized in that: the external diameter of described lining matches with the aperture of the flanging bore on described valve body, and the outside diameter d 0 of the straight pipe portion that the internal diameter of described lining is relatively large with described capillary tube caliber matches.
6. solenoid directional control valve according to claim 2, it is characterized in that: described variable-diameter structure is arranged on described lining, the material of described lining adopts red copper, and the mode of one end straight tube enlarging of lining is processed and made it be formed with the relatively large expansion mouth of caliber and cone connection.
7. solenoid directional control valve according to claim 6, is characterized in that: the expansion mouth external diameter of described lining matches with the aperture of the flanging bore on described valve body, and the internal diameter of the other end pipe with small pipe diameter of described lining matches with the outside diameter d 0 of capillary tube.
8. solenoid directional control valve according to claim 1, it is characterized in that: described lining, capillary tube are provided with variable-diameter structure, the external diameter of the Large Diameter Pipeline of described lining variable-diameter structure matches with the aperture of the flanging bore on described valve body, and the outside diameter d 0 of the straight tube that the internal diameter d1 of the pipe with small pipe diameter of the other end of described lining is relatively large with the caliber of described capillary tube matches.
9. according to claim 1-8 wherein arbitrary described solenoid directional control valve, it is characterized in that: the port surface in described lining press-in valve body flanging bore is not higher than the internal face of described valve body.
10., according to claim 1-8 wherein arbitrary described solenoid directional control valve, it is characterized in that: the described capillary tube port surface inserted in described lining is no more than the internal face of described valve body.
11. according to claim 1-8 wherein arbitrary described solenoid directional control valve, and it is characterized in that, the flange height h of described valve body flanging bore is: 0.5mm≤h≤1.5mm.
12. according to claim 1-8 wherein arbitrary described solenoid directional control valve, and it is characterized in that, the gap width of described clearance portion does not exceed the scope of 0.1mm ~ 1.5mm, clearance height H >=2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200704.5A CN101852300B (en) | 2010-06-09 | 2010-06-09 | A kind of solenoid directional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200704.5A CN101852300B (en) | 2010-06-09 | 2010-06-09 | A kind of solenoid directional control valve |
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| Publication Number | Publication Date |
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| CN101852300A CN101852300A (en) | 2010-10-06 |
| CN101852300B true CN101852300B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010200704.5A Active CN101852300B (en) | 2010-06-09 | 2010-06-09 | A kind of solenoid directional control valve |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104235464A (en) * | 2013-06-09 | 2014-12-24 | 浙江盾安禾田金属有限公司 | Switch valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654975Y (en) * | 2003-09-27 | 2004-11-10 | 浙江三花集团有限公司 | Electromagnetic flour-way reversing valve for heat pump air conditioner |
| CN101070923A (en) * | 2006-05-11 | 2007-11-14 | 乐金电子(天津)电器有限公司 | By-pass type four-way valve of external machine of one-and-multi air-conditioner |
| CN101298889A (en) * | 2007-04-30 | 2008-11-05 | 浙江三花制冷集团有限公司 | Electromagnetic valve adopting stepping motor as pilot-actuated valve drive mode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121131A (en) * | 2003-10-16 | 2005-05-12 | Ranco Japan Ltd | Method of joining tube to valve housing, and connecting member therefor |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654975Y (en) * | 2003-09-27 | 2004-11-10 | 浙江三花集团有限公司 | Electromagnetic flour-way reversing valve for heat pump air conditioner |
| CN101070923A (en) * | 2006-05-11 | 2007-11-14 | 乐金电子(天津)电器有限公司 | By-pass type four-way valve of external machine of one-and-multi air-conditioner |
| CN101298889A (en) * | 2007-04-30 | 2008-11-05 | 浙江三花制冷集团有限公司 | Electromagnetic valve adopting stepping motor as pilot-actuated valve drive mode |
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Effective date of registration: 20231026 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 Liquan village, Chengguan Town, Xinchang County, Zhejiang Province, China Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |