CN101963255A - End cover as well as main valve of four-way reversing valve and four-way reversing valve using same - Google Patents
End cover as well as main valve of four-way reversing valve and four-way reversing valve using same Download PDFInfo
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- CN101963255A CN101963255A CN 200910159639 CN200910159639A CN101963255A CN 101963255 A CN101963255 A CN 101963255A CN 200910159639 CN200910159639 CN 200910159639 CN 200910159639 A CN200910159639 A CN 200910159639A CN 101963255 A CN101963255 A CN 101963255A
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- end cap
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- valve body
- main valve
- way reversing
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Abstract
The invention discloses an end cover used for a main valve of a four-way reversing valve. The end cover is provided with a large-diameter segment and a small-diameter segment axially arranged in sequence, wherein the periphery of the large-diameter end cover is fixedly connected with a valve body; the end part of the small-diameter end cover is matched with a piston of the main valve to limit the working position of the piston; and the large-diameter end cover is in a frustum shape with a larger external end and smaller internal end. The end cover is suitable for the valve body determined by the permissible range of the size of the internal diameters at both ends; after assembling, the peripheral surface of the large-diameter end of both end covers or the near large-diameter end is matched with the inner wall of the valve body so as to meet the position precision requirement therebetween and further improve the welding precision therebetween. On this basis, the invention further provides a main valve of a four-way reversing valve and a four-way reversing valve using the end cover.
Description
Technical field
The present invention relates to a kind of four-way change-over valve that is used for refrigerant-cycle systems, the main valve of four-way reversing valve and the four-way change-over valve that are specifically related to end cap and use this end cap.
Background technique
Existing four-way change-over valve mainly is made up of electromagnetic coil, pilot valve and main valve.In control procedure, realize the commutation of main valve by the acting in conjunction of electromagnetic coil and pilot valve, switching the circulating direction of refrigeration working medium, thereby make heat pump type air conditioner in refrigeration with heat between two kinds of working staties and switch, realize the refrigeration in summer, heat the purpose of dual-use winter.
Existing four-way change-over valve comprises three major components such as main valve, pilot valve and electromagnetic coil.Main valve has three ports: the S mouth that is communicated with compressor suction port, E mouth that is communicated with indoor heat converter and the C mouth that is communicated with outdoor heat converter; Two end caps are connected by sealing with the both side ends of tubular valve body respectively, form the airtight valve pocket in inside of main valve, and two pistons are divided into three chambeies, left, center, right with the inside valve pocket of main valve, and wherein, left chamber is communicated with the e mouth of pilot valve, right chamber is communicated with the c mouth of pilot valve.Like this, under the control of pilot valve, the slide block of main valve inside is along with together displacement of piston, thereby realization is freezed and heated two kinds of switchings between the working state; During the refrigeration position, described slide block slides into the left side, and described E mouth and the connection of S mouth, D mouth and C mouth are communicated with, and left hand piston and left side end cap offsets to inner bulge under this state; When heating the position, described slide block slides into the right side, and described S mouth and the connection of C mouth, D mouth and E mouth are communicated with, and right hand piston and right side end cap offsets to inner bulge under this state.
The analysis of above-mentioned working principle as can be known, the required precision of assembling, welding procedure is higher between two end caps and the valve body, see also Fig. 1, the figure shows the position relation between end cap 1a and the valve body 2a, end cap 1a adopts argon welding fixedly connected after being plugged in the both sides inner chamber of valve body 2a; Cylindric outer surface and the inwall of valve body 2a of this matching relationship by end cap 1a offsets and guarantees the positioning tolerance requirement of end cap to inner bulge, and please in the lump referring to Fig. 2, this figure is the I portion enlarged view of Fig. 1.Yet existing valve body adopts corrosion resistant plate to stretch and forms, and there is deviation from cylindrical form mostly in the finished product valve body, that is, valve block internal diameter is deposited the phenomenon at one end big, that the other end is little; Therefore, there is the problem that a splaying is big, the other end is then tighter in end cap with just cooperating of valve body.Like this, during practical set, end cap tends to valve body is strutted after being pressed into the valve body miner diameter end, makes to form Spielpassung between the aft section of end cap and the valve body; The matching gap of end cap and valve body bigger diameter end is bigger, so influence positional accuracy and welding quality between the two.
In view of this, demand urgently being optimized design, to guarantee assembling, the welding precision between end cap and the valve body by the improvement of structural type at existing end cap.
Summary of the invention
At above-mentioned defective, the technical problem that the present invention solves is, a kind of end cap is provided, and improves matching relationship between itself and the valve body by architecture advances, influences the problem of the erection welding precision between end cap and the valve body with the deviation from cylindrical form that overcomes valve body.On this basis, the present invention also provides a kind of main valve of four-way reversing valve and four-way change-over valve of this end cap of application.
End cap provided by the invention, be used for main valve of four-way reversing valve, this end cap has big footpath section and the path section that sets gradually vertically, wherein, the periphery of big footpath section end cap is used for being connected by sealing with valve body, and the end of path section end cap is used for cooperating so that limit the working position of piston with the piston of main valve; Described big footpath section end cap is big, the inner little cone table shape in outer end.
Preferably, the cone angle of the big footpath section end cap of cone table shape is specially 4 °～32 °.
Preferably, be interference fit between the bigger diameter end of described big footpath section end cap and the valve interior wall.
Preferably, the magnitude of interference of this interference fit is specially 0.1mm～0.6mm.
Preferably, the bus length of the big footpath of described cone table shape section is specially 1mm～5mm.
Preferably, the end of described big footpath section end cap has radially-protruding seam, is used for offseting with the end face of valve body cooperating.
Preferably, this end cap adopts plate stamping to make.
Compared with prior art, the big footpath section of end cap of the present invention is big, the inner little cone table shape in outer end.Because big footpath of the present invention section end cap body is thin walled structures, therefore, in assembly process, if when a big footpath section end cap bears radially inner extruding force, then its integral body will inwardly produce the bending distortion and keep its bigger diameter end and valve interior wall to offset around miner diameter end.Like this,,, effectively control the tolerance of size of cone table shape valve gap bigger diameter end when needing only product specification, just can effectively avoid the problem of excesssive gap between the two for its bigger diameter end based on the valve body to be assembled that has deviation from cylindrical form; For its miner diameter end, the generation of this bending distortion can be avoided producing bigger lateral extrusion power in the end cap process of press in, thereby it is excessive and with the problem that valve body struts, avoid both excesssive gaps to efficiently solve this lateral extrusion power.After assembling was finished, the bigger diameter end of big footpath section end cap or the outer surface of nearly bigger diameter end offseted with the inwall of valve body and cooperate, and with satisfied position accuracy demand between the two, and can further improve between the two welding precision.
In preferred version of the present invention, the end of big footpath section end cap has additional radially-protruding seam, is used for offseting with the end face of valve body cooperating.So design can further guarantee the perpendicularity requirement behind the end cap valve body and between the valve body.
End cap provided by the invention is applicable to any structural relation that cooperates with cylindrical shell, is specially adapted to main valve of four-way reversing valve.
Main valve of four-way reversing valve provided by the invention comprises valve body and the end cap that is connected by sealing with the both side ends of this valve body; Described end cap as previously mentioned.
Preferably, adopt argon welding, laser beam welding or High Energy-Dense Beam Welding to be connected between described end cap and the valve end.
Four-way change-over valve provided by the invention comprises main valve, and described main valve adopts foregoing main valve of four-way reversing valve.
Description of drawings
Fig. 1 shows the position relation between end cap 1a and the valve body 2a;
Fig. 2 is the I portion enlarged view of Fig. 1;
Fig. 3 is the overall structure schematic representation of four-way change-over valve described in the mode of execution;
Fig. 4 is the overall structure schematic representation of first kind of described end cap of embodiment;
Fig. 5 is the II portion enlarged view of Fig. 4;
Fig. 6 is the overall structure schematic representation of second kind of described end cap of embodiment;
Fig. 7 is the assembling schematic representation of second kind of described end cap of embodiment and valve body.
Among Fig. 3-Fig. 7:
Main valve 10, pilot valve 20, electromagnetic coil 30;
Embodiment
Specify present embodiment below in conjunction with Figure of description.
Related herein upper and lower, left and right, the noun of locality such as outer and inner are that the shown position with four-way change-over valve in the accompanying drawing is that benchmark defines, be to be understood that herein the noun of locality that adopts should not limit to the protection domain of this patent.
Referring to Fig. 3, this figure is the overall structure schematic representation of the described four-way change-over valve of present embodiment.
As shown in Figure 3, the described four-way change-over valve of present embodiment mainly is made up of main valve 10, pilot valve 20 and electromagnetic coil 30.
The end cap 1 that main valve of four-way reversing valve 10 mainly is connected by sealing by the both side ends of valve body 2, this valve body, be fixedly installed on the valve seat 5 of valve body 2 inner chambers, place two pistons 3 (figure only illustrates) of described valve seat 5 both sides, the connecting rod 6 that connects two pistons 3, the slide block 4 that is fixedly installed on described connecting rod 6 middle parts to form respectively; Two pistons 3 are divided into three chambeies, left, center, right with main valve, slide block 4 is with above-mentioned lumen separated into two parts, move left and right along with piston 3, the lower surface of slide block 4 can and fit tightly along the upper surface slide of described valve seat 5, its left and right sides limit position is respectively refrigerating state and heats state, is refrigerating state shown in Fig. 3.Shown in the figure, be fitted with the D that connects exhaust outlet of compressor on the valve body 1 of valve seat 5 opposite sides and take over, three valve ports on the described valve seat 5 take over the S of the E adapter that is connected indoor heat converter, the connection of connection compressor inlet respectively successively and the C of junction chamber outer heat-exchanger takes over connection.
Pilot valve 20 main function components and prior art are identical, such as, be welded with successively on the valve seat e capillary tube, s capillary tube, c capillary tube and respectively with chamber, a described main valve left side, S takes over and the right chamber of main valve is communicated with, is welded with the d capillary tube that is communicated with main valve D adapter on the sleeve pipe of valve seat side.
Electromagnetic coil 30 is made up of coil component and magnet case, and suit is fixed on the outside of pilot valve 20.
Need to prove that those skilled in the art can realize based on prior art, so the ins and outs of parts such as pilot valve 20, electromagnetic coil 30 are not done further to set forth herein.
This paper provides following improvement project based on the end cap of existing main valve and the matching relationship between the valve body.Describe in detail below in conjunction with two kinds of typical embodiments.
See also the overall structure schematic representation that Fig. 4, this figure are first kind of end caps.
As shown in Figure 4, identical with existing end cover structure is, end cap 1 has big footpath section and the path section that sets gradually vertically, wherein, the periphery of big footpath section end cap 11 is used for being connected by sealing with valve body, and the end 121 of path section end cap 12 is used for cooperating so that limit the working position of piston with the piston of main valve; Core of the present invention is that big footpath section end cap 11 is big, the inner little cone table shape in outer end.
In the assembly process of end cap 1 and valve body 2, when the radial dimension of big footpath section end cap 11 during greater than the internal diameter of valve body 1, it will bear radially inner extruding force; Simultaneously, because big footpath section end cap body is a thin walled structures, then its integral body will inwardly produce the bending distortion around miner diameter end under the effect of this lateral extrusion power, its bigger diameter end offsets with valve interior wall when treating that a big footpath section end cap 11 places in the valve body fully, with the position accuracy demand between assurance end cap 1 and the valve body 2.Be the clear inventive point that the application is shown, please in the lump referring to Fig. 5, this figure is the II portion enlarged view of Fig. 4.
Need to prove that the radial dimension of big footpath section end cap 11 should be definite according to the gauge size of valve body, such as, need to determine the bigger diameter end radial dimension D of big footpath section end cap 11, use needs all in the application's protection domain as long as satisfy.Preferably, be interference fit between the bigger diameter end of big footpath section end cap 11 and the valve interior wall, the magnitude of interference of this interference fit is specially 0.1mm～0.6mm.
Compare with the cylindric big footpath section of existing end cap, the above-mentioned end cap that present embodiment provides is applicable to the valve body that two ends internal diameter size tolerance is determined, for its bigger diameter end, as long as effectively control the tolerance of size of cone table shape valve gap bigger diameter end during product specification, just can effectively avoid the problem of excesssive gap between the two; For its miner diameter end, the generation of this bending distortion can be avoided producing bigger lateral extrusion power in the end cap process of press in, thereby it is excessive and with the problem that valve body struts, avoid both excesssive gaps to efficiently solve this lateral extrusion power.After assembling was finished, the outer surface of the bigger diameter end of two end caps or nearly bigger diameter end offseted with the inwall of valve body and cooperates, thereby can satisfy position accuracy demand between the two, and can further improve welding precision between the two.
From stressed angle analysis, when the cone angle A of the big footpath of this cone table shape section end cap is excessive, correspondingly, need apply bigger active force when end cap 1 is pressed into valve body 2, and end cap 1 is a thin walled structures, this active force will cause end cap 1 to produce distortion when big.
For avoiding end cap 1 to produce above-mentioned distortion, the cone angle A of the big footpath section end cap of cone table shape is 4 °～32 °, is preferably 4 °～20 °.
In addition, as shown in Figure 5, the long L of bus of the big footpath of cone table shape section is specially 1mm～5mm, and the leading role during with raising stamping process performance and raising assembling guarantees the perpendicularity after end cap is pressed into.
See also Fig. 6, this figure is second kind of end cap embodiment's an overall structure schematic representation.
As shown in Figure 6, compare with first kind of described end cap of embodiment, the described end cap 1 of present embodiment ' big footpath section end cap 11 ' the end have additional have radially-protruding seam 111 ', this seam 111 ' be used for and valve body 2 ' end face offset and cooperate; Other compositions are identical with first kind of embodiment with annexation.Equally, the described end cap 1 of present embodiment ' also can adopt plate stamping to make.
Like this, end cap 1 ' be pressed into valve body 2 ' after, can further guarantee end cap 1 ' and valve body 2 ' between the perpendicularity requirement.Please in the lump referring to Fig. 7, this figure is the assembling schematic representation of described end cap of present embodiment and valve body.
After the assembling of aforementioned two kinds of described end caps of embodiment and valve body is finished, can select for use welding procedures such as argon welding, laser beam welding or High Energy-Dense Beam Welding to realize being connected by sealing between the two.
The working procedure of four-way change-over valve provided by the present invention, as described below:
When air-conditioning needs refrigerating operaton, electromagnetic coil 30 outages, the e of pilot valve 20, s two capillary tubies and c, d two capillary tubies communicate respectively, and at this moment, chamber, a main valve left side is that the right chamber of low-pressure low-temperature district, main valve is the high pressure-temperature district; Just formed a pressure difference like this between the chamber, the left and right sides in described main valve 10, under this action of pressure, described slide block 4 and piston 3 are shifted to the left side, E, S two pipes are communicated, D, C two pipes communicate, at this moment, the refrigeration working medium circulation path of internal system is: exhaust outlet of compressor → D adapter → main valve body → C adapter → outdoor heat converter → throttle element → indoor heat converter → E adapter → slide block 4 → S adapter → compressor air suction mouth, system realizes refrigeration cycle.
When air-conditioning needs heating operation, electromagnetic coil 30 energisings, the c of pilot valve 20, s two capillary tubies and e, d two capillary tubies communicate respectively, and at this moment, the right chamber of main valve is that low-pressure low-temperature district, chamber, a main valve left side become the high pressure-temperature district; Just formed a pressure difference like this between the chamber, the left and right sides in described main valve 10, under this action of pressure, described slide block 4 and piston 3 are shifted to the right side, C, S two pipes are communicated, D, E two pipes communicate, at this moment, the refrigeration working medium circulation path of internal system is: exhaust outlet of compressor → D adapter → main valve body → E adapter → indoor heat converter → throttle element → outdoor heat converter → C adapter → slide block → S adapter → compressor air suction mouth, system realizes heating circulation.
The above only is a preferred implementation of the present invention; 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 make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. end cap, be used for main valve of four-way reversing valve, this end cap has big footpath section and the path section that sets gradually vertically, wherein, the periphery of big footpath section end cap is used for being connected by sealing with valve body, and the end of path section end cap is used for cooperating so that limit the working position of piston with the piston of main valve; It is characterized in that described big footpath section end cap is big, the inner little cone table shape in outer end.
2. end cap according to claim 1 is characterized in that, the cone angle of the big footpath section end cap of cone table shape is specially 4 °～32 °.
3. end cap according to claim 2 is characterized in that, is interference fit between the bigger diameter end of described big footpath section end cap and the valve interior wall.
4. end cap according to claim 3 is characterized in that the magnitude of interference of this interference fit is specially 0.1mm～0.6mm.
5. according to claim 2,3 or 4 described end caps, it is characterized in that the bus length of the big footpath of described cone table shape section is specially 1mm～5mm.
6. end cap according to claim 5 is characterized in that, the end of described big footpath section end cap has radially-protruding seam, is used for offseting with the end face of valve body cooperating.
7. end cap according to claim 6 is characterized in that, this end cap adopts plate stamping to make.
8. main valve of four-way reversing valve comprises valve body and the end cap that is connected by sealing with the both side ends of this valve body; It is characterized in that described end cap adopts each described end cap in the claim 1 to 7.
9. main valve of four-way reversing valve according to claim 8 is characterized in that, adopts argon welding, laser beam welding or High Energy-Dense Beam Welding to be connected between described end cap and the valve end.
10. four-way change-over valve comprises main valve, it is characterized in that, described main valve adopts claim 8 or 9 described main valve of four-way reversing valve.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910159639 CN101963255B (en) | 2009-07-24 | 2009-07-24 | End cover as well as main valve of four-way reversing valve and four-way reversing valve using same |
| KR1020100066918A KR101279833B1 (en) | 2009-07-24 | 2010-07-12 | End cover and four-way reversing valve using the same and assembling method thereof |
| EP20100007524 EP2278200B1 (en) | 2009-07-24 | 2010-07-20 | End cover and four-way reversing valve using the same and assembling method thereof |
| US12/839,561 US8770225B2 (en) | 2009-07-24 | 2010-07-20 | End cover and four-way reversing valve using the same and assembling method thereof |
| JP2010164902A JP5303518B2 (en) | 2009-07-24 | 2010-07-22 | End cover and four-way switching valve using this end cover |
| JP2012220789A JP5580863B2 (en) | 2009-07-24 | 2012-10-02 | End cover and four-way switching valve using this end cover |
| JP2012240844A JP5670986B2 (en) | 2009-07-24 | 2012-10-31 | Assembly method for four-way selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910159639 CN101963255B (en) | 2009-07-24 | 2009-07-24 | End cover as well as main valve of four-way reversing valve and four-way reversing valve using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101963255A true CN101963255A (en) | 2011-02-02 |
| CN101963255B CN101963255B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910159639 Active CN101963255B (en) | 2009-07-24 | 2009-07-24 | End cover as well as main valve of four-way reversing valve and four-way reversing valve using same |
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| CN (1) | CN101963255B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052497B (en) * | 2009-10-29 | 2013-03-13 | 浙江三花制冷集团有限公司 | Manufacturing method of switching valve end cover, switching valve end cover and switching valve |
| CN106763894A (en) * | 2015-11-24 | 2017-05-31 | 株式会社鹭宫制作所 | Switching valve and freeze cycle |
| CN109424764A (en) * | 2017-08-31 | 2019-03-05 | 株式会社不二工机 | Flow channel switching valve |
| CN110864136A (en) * | 2019-11-20 | 2020-03-06 | 山东建筑大学 | Constant-temperature water mixing valve of solar water heater and working method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3357453A (en) * | 1965-05-26 | 1967-12-12 | Robertshaw Controls Co | Valve construction and parts therefor or the like |
| SE464344B (en) * | 1988-02-18 | 1991-04-15 | Norden Pac Dev Ab | APPENDIX, PROCEDURES BEFORE ITS ASSEMBLY ON PIPE-SIZED SHELTERS AND DEVICE FOR IMPLEMENTATION OF THE PROCEDURE |
| CN1161420A (en) * | 1997-01-20 | 1997-10-08 | 张云龙 | Direction change valve for refrigerant fluid |
| CN101338827A (en) * | 2007-07-02 | 2009-01-07 | 浙江三花制冷集团有限公司 | Heat pump -type idle call electromagnetic direction changing valve |
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2009
- 2009-07-24 CN CN 200910159639 patent/CN101963255B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052497B (en) * | 2009-10-29 | 2013-03-13 | 浙江三花制冷集团有限公司 | Manufacturing method of switching valve end cover, switching valve end cover and switching valve |
| CN106763894A (en) * | 2015-11-24 | 2017-05-31 | 株式会社鹭宫制作所 | Switching valve and freeze cycle |
| CN106763894B (en) * | 2015-11-24 | 2019-09-13 | 株式会社鹭宫制作所 | Switching valve and refrigerating circulation system |
| CN109424764A (en) * | 2017-08-31 | 2019-03-05 | 株式会社不二工机 | Flow channel switching valve |
| CN110864136A (en) * | 2019-11-20 | 2020-03-06 | 山东建筑大学 | Constant-temperature water mixing valve of solar water heater and working method |
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|---|---|
| CN101963255B (en) | 2013-01-02 |
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Effective date of registration: 20170215 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Mei Zhu Zhen three flower Mei Zhu Industrial Park Administration Building Patentee after: Zhejiang three flower intelligent control Limited by Share Ltd Address before: 312500 Liquan village of Zhejiang County in Xinchang Province town under Patentee before: Sanhua Refrigeration Group Co., Ltd., Zhejang |