CN101963256A - End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve - Google Patents
End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve Download PDFInfo
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- CN101963256A CN101963256A CN2009101596410A CN200910159641A CN101963256A CN 101963256 A CN101963256 A CN 101963256A CN 2009101596410 A CN2009101596410 A CN 2009101596410A CN 200910159641 A CN200910159641 A CN 200910159641A CN 101963256 A CN101963256 A CN 101963256A
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Abstract
The invention discloses an end cover which is used for being matched with a valve body of a main valve of a four-way reversing valve; the end cover is provided with a large diameter section and a small diameter section which are sequentially arranged along the axial direction, wherein the periphery of the end cover at the large diameter section is used for being fixedly connected with the valve body in a sealing way, and the end part of the end cover at the small diameter section is used for being matched with a piston of the main valve for limiting the work position of the piston; and the end part of the end cover at the large diameter section is provided with a stop hole extending along the radial direction, and the stop hole is used for leaning against and being matched with the end surface of the valve body. Compared with the prior art, the part where the end cover is welded with the valve body is moved to the end surface of the valve body at the outer side, so that the radial clearance between the end cover and the valve body is larger, and the welding technique is not influenced. Therefore, the invention can effectively avoid the problem of poorer welding quality caused by more change of the inner diameter of the valve body. The invention also disclosed the valve body matched with the end cover, main valve of the four-way reversing valve provided with the end cover and the valve body, and the four-way reversing valve.
Description
Technical field
The present invention relates to a kind of four-way change-over valve that is used for refrigerant-cycle systems, the end cap that is specifically related to match, valve body and main valve of four-way reversing valve and four-way change-over valve with this end cap and valve body.
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.
The main valve of existing four-way change-over 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.As everyone knows, welded gaps is crossed senior general and is directly influenced welding quality between the two.
In view of this, demand urgently being optimized design, to guarantee the welding precision between end cap and the valve body by the improvement of structural type at existing end cap and valve body.
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 end cap and the valve body by architecture advances, influences the problem of welding precision between end cap and the valve body with the deviation from cylindrical form that overcomes valve body.The present invention also provides a kind of valve body that is used with this end cap.On this basis, the present invention also provides the main valve of four-way reversing valve and the four-way change-over valve of this end cap of a kind of application and valve body.
End cap provided by the invention, be used for matching with the valve body of 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; 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, be benchmark with the center line of the external peripheral surface that cooperates with valve body of described big footpath section end cap, described seam be 0.4mm with the offset squareness tolerance value of the end face that cooperates of valve body end face.
Preferably, described seam is 0.2mm with the offset flatness tolerance value of the end face that cooperates of valve body end face.
Valve body provided by the invention is used for matching with the end cap of main valve of four-way reversing valve, and this valve body is cylindric; Center line with the inner circumferential surface of valve body is a benchmark, and the squareness tolerance value of the both sides end face of described valve body is 0.4mm.
Preferably, the flatness tolerance value of the both sides end face of described valve body is 0.2mm.
The big footpath of end cap provided by the invention section has radially-protruding seam, and this seam offsets with the end face of valve body and cooperates; Compared with prior art, the position of this end cap and valve body welding moves to the end face of outside valve body, like this, even radial clearance between the two big (greater than 0.2mm) also can not influence the realization of welding procedure.Therefore, can effectively avoid causing the lower problem of welding quality greatly owing to valve block internal diameter changes.
In preferred version of the present invention, to described seam make further Geometrical Tolerance Principle with the valve body end face end face that cooperates that offsets, the flatness tolerance value of this end face is 0.2mm, this end face is 0.4mm with respect to the squareness tolerance value of its shaft axis.Obviously, can improve the quality of fit between seam and the valve body, and then improve welding quality.
In addition, with aforementioned end cap accordingly, the present invention also makes Geometrical Tolerance Principle for the both sides end face of the valve body that matches with this end cap, provides further and ensures for improving between the two quality of fit.
End cap that matches provided by the invention and valve body are 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 adopts foregoing end cap, and described valve body adopts foregoing valve body.
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 existing 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 embodiment;
Fig. 4 is the overall structure schematic representation of end cap described in the embodiment;
Fig. 5 is the II portion enlarged view of Fig. 4;
Fig. 6 is the assembling schematic representation of end cap described in the embodiment and valve body;
Fig. 7 is the overall structure schematic representation of valve body described in the embodiment.
Among Fig. 3-Fig. 7:
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 2 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.
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.
See also the overall structure schematic representation that Fig. 4, this figure are the described end caps of present embodiment.
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 2, 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, the end of big footpath section end cap 11 has radially-protruding seam 13, is used for offseting with the end face of valve body 2 cooperating.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.
Two end caps 1 press-fit respectively after the both side ends of valve body 2 and weld, thereby form the airtight cavity volume of valve inner.See also Fig. 6, this figure is the assembling schematic representation of end cap described in the present embodiment and valve body.
As shown in Figure 6, in the present embodiment, weld seam between the two is positioned at the outer radial periphery surface 131 of seam 13 and the junction point C of valve body 2 outer surfaces; Particularly, after end cap 1 is finished with valve body 2 assemblings, 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.
Compared with prior art, this programme moves to the valve body outside with welding part between the two.Like this,, can not influence welding quality yet, that is to say that the change of position while welding between the two can guarantee to weld the influence that is not subjected to above-mentioned radial clearance between the two even there is bigger radial clearance between end cap 1 and valve body 2 inwalls.
Shown in the figure, the external diameter basically identical of the external diameter of seam 13 and valve body 2.Should be appreciated that outside dimension between the two is not limited to the isometrical (not shown) that concerns, such as, the external diameter of seam 13 is greater than the external diameter of valve body 2, and this moment, the welding position was positioned at the end face of seam 13 and the junction point of valve body 2 outer surfaces; The external diameter of seam 3 is less than the external diameter of valve body 2, and this moment, the welding position was positioned at the outer surface of seam 13 and the junction point of valve body 2 end faces; Use needs all in the scope that the application asks for protection as long as satisfy.
End cap 1 adopts stamping process to make, to improve work efficiency.
Further, be to guarantee the quality of fit between seam 13 and the valve body 2, this programme has proposed perpendicularity and planeness requirement for seam 13 with the valve body 2 end faces end face 132 that cooperates that offsets.For the perpendicularity requirement, be benchmark A with the center line of the external peripheral surface 111 that cooperates with valve body 2 of big footpath section end cap 11, this seam 13 be 0.4mm with the offset squareness tolerance value of the end face 132 that cooperates of valve body end face.For the planeness requirement, this seam 13 be 0.2mm with the offset flatness tolerance value of the end face 132 that cooperates of valve body end face.
See also Fig. 7, the figure shows the overall structure schematic representation of the described valve body of present embodiment.Please in the lump referring to Fig. 6, this valve body 2 is used with aforementioned end cap 1.
The valve body 2 that present embodiment provides is cylindric, and its agent structure and existing valve body are identical, so this paper repeats no more; The main points of this programme are the both sides end face of valve body 2 has been proposed perpendicularity and planeness requirement, with the quality of fit between the seam 13 of further raising valve body 2 and end cap 1.For the perpendicularity requirement, be benchmark B with the center line of the inner circumferential surface of valve body 2, the squareness tolerance value of the both sides end face of valve body 2 is 0.4mm.For the planeness requirement, the flatness tolerance value of the both sides end face of valve body 2 is 0.2mm.
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 (8)
1. end cap, be used for matching with the valve body of 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 the end of described big footpath section end cap has radially-protruding seam, being used for offseting with the end face of valve body cooperates.
2. end cap according to claim 1 is characterized in that, is benchmark with the center line of the external peripheral surface that cooperates with valve body of described big footpath section end cap, described seam be 0.4mm with the offset squareness tolerance value of the end face that cooperates of valve body end face.
3. end cap according to claim 2 is characterized in that, described seam be 0.2mm with the offset flatness tolerance value of the end face that cooperates of valve body end face.
4. valve body is used for matching with the end cap of main valve of four-way reversing valve, and this valve body is cylindric; It is characterized in that, be benchmark with the center line of the inner circumferential surface of valve body, and the squareness tolerance value of the both sides end face of described valve body is 0.4mm.
5. valve body according to claim 4 is characterized in that, the flatness tolerance value of the both sides end face of described valve body is 0.2mm.
6. 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 3, described valve body adopts as each described valve body in the claim 4 to 5.
7. main valve of four-way reversing valve according to claim 6 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.
8. four-way change-over valve comprises main valve, it is characterized in that, described main valve adopts claim 6 or 7 described main valve of four-way reversing valve.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101596410A CN101963256A (en) | 2009-07-24 | 2009-07-24 | End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve |
| KR1020100066918A KR101279833B1 (en) | 2009-07-24 | 2010-07-12 | 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 |
| EP20100007524 EP2278200B1 (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 |
|---|---|---|---|
| CN2009101596410A CN101963256A (en) | 2009-07-24 | 2009-07-24 | End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101963256A true CN101963256A (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101596410A Pending CN101963256A (en) | 2009-07-24 | 2009-07-24 | End cover, valve body matched therewith, main valve of four-way reversing valve, and four-way reversing valve |
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| Country | Link |
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| CN (1) | CN101963256A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758936A (en) * | 2012-02-08 | 2012-10-31 | 浙江三花制冷集团有限公司 | Pilot valve of four-way reversing valve and machining method of pilot 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 |
| CN114838184A (en) * | 2021-02-01 | 2022-08-02 | 浙江三花智能控制股份有限公司 | Installation method of electromagnetic directional valve |
-
2009
- 2009-07-24 CN CN2009101596410A patent/CN101963256A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758936A (en) * | 2012-02-08 | 2012-10-31 | 浙江三花制冷集团有限公司 | Pilot valve of four-way reversing valve and machining method of pilot 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 |
| CN114838184A (en) * | 2021-02-01 | 2022-08-02 | 浙江三花智能控制股份有限公司 | Installation method of electromagnetic directional valve |
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Application publication date: 20110202 |