CN102537398A - Reversing valve and sliding block of reversing valve as well as frequency conversion air conditioner using reversing valve - Google Patents
Reversing valve and sliding block of reversing valve as well as frequency conversion air conditioner using reversing valve Download PDFInfo
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- CN102537398A CN102537398A CN2010105784869A CN201010578486A CN102537398A CN 102537398 A CN102537398 A CN 102537398A CN 2010105784869 A CN2010105784869 A CN 2010105784869A CN 201010578486 A CN201010578486 A CN 201010578486A CN 102537398 A CN102537398 A CN 102537398A
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Abstract
The invention discloses a sliding block for a reversing valve. The sliding block comprises a main body part (21) and side wings (22), wherein the total length of the sliding block along the sliding direction of the sliding block is greater than or equal to the outer wall distance of two farthest valve holes of the reversing valve; and groove bodies (4) penetrating through the thickness direction of the side wings (22) are formed in the side wings (22). Therefore, after the groove bodies are formed in the sliding block and when the sliding block is positioned at the middle, the area of an intermediate access surface formed by the sliding block and the valve seat is decided by the length of the intermediate access surface and the width of the groove bodies; and under the same length change value, the width of the groove bodies is far smaller than that of a through flow surface formed by the sliding block and the valve seat in the prior art and the influence on the area of the through flow surface due to length change is reduced, thereby the influence on an intermediate flow due to length change is reduced, the control precision of the intermediate flow is improved and the service performance of the frequency conversion air conditioner is enhanced. The invention also discloses the reversing valve comprising the sliding block and the frequency conversion air conditioner using the reversing valve.
Description
Technical field
The present invention relates to the air-conditioning refrigeration system field, particularly a kind of slide block that is used for selector valve.The invention still further relates to a kind of selector valve of above-mentioned slide block and frequency converting air conditioner that comprises above-mentioned selector valve of comprising.
Background technique
Along with the fast development of China's economic construction, air conditioner industry constantly develops towards the direction of environmental protection and energy saving, and frequency converting air conditioner is applied in the every field of productive life more and more widely.
In air-conditioning system, general the refrigeration or the system of adjustment air-conditioning system are warm through changing the circulating direction of refrigerant, and the change of the circulating direction of refrigerant needs selector valve to realize.Below be the working procedure of example brief account selector valve in air-conditioning system with the four-way change-over valve.
Please refer to Fig. 1, Fig. 1 is the partial structurtes schematic representation of four-way change-over valve in a kind of typical air-conditioning system.
Four-way change-over valve is arranged in the refrigerant loop that is made up of indoor heat converter and outdoor heat converter etc.; Generally include electromagnetic coil, main valve and pilot valve three parts; Slide block 11 is positioned at the valve body 12 of main valve; Be installed on the valve seat 13 of main valve, and link to each other with right piston 152 with left piston 151 through connecting rod 14 respectively, left piston 151 and right piston 152 are divided into left chamber, middle chamber and right chamber with the cavity of main valve; The top of slide block 11 is processed with step; And match with above-mentioned connecting rod 14 through step; The bottom of slide block 11 has inner chamber 111; Pass through the circulation of fluid that inner chamber 111 forms a sealing by a winding pipe 17, another winding pipe 17 is through the circulation of fluid of another sealing of inner chamber formation of valve body 12, and the path of two groups of circulation of fluid is separated by the main part of slide block 11 mutually.When air-conditioning need freeze; Under the effect of pilot valve; Make and form pressure difference between left chamber and the right chamber of main valve; The left and right pressure differential between chambers of main valve promotes slide block 11 and moves with two-piston, makes the refrigeration agent of internal system flow to the compressor air suction mouth from exhaust outlet of compressor, and system is in the refrigeration work state; When air-conditioning needs heating operation; Same under the effect of pilot valve, make to form pressure difference between the left and right sides chamber of main valve that this pressure difference promotes slide block 11 and moves in the opposite direction with two-piston; Make refrigeration agent from flowing to the compressor air suction mouth, system is in and heats working state.
Along with the foundation and the formation of frequency changer leading position, just require its component performance and frequency changer to be complementary.In frequency-conversion air-conditioning system, require four-way change-over valve to have the middle flow of certain value, and require the intermediate flow value fluctuation between four-way valve Dan Pin less, flow has higher precision control in the middle of promptly requiring; Middle flow will influence the startup performance of handoffs of four-way valve when too big; When middle flow too hour; Cause system's liquid hammer easily when four-way valve switches in system and make system produce abnormal pressure, thus the usability and the life-span of having reduced other component of four-way valve and air-conditioning system.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of slide block in the four-way change-over valve shown in Figure 1; Fig. 3 is the schematic representation of the middle flow that produces in the slide block work shown in Figure 2.
In a kind of typical four-way change-over valve; Its slide block mainly is through the unitary mould integrated injection molding by nylon, plastic or other material; Its working surface agent structure is a rectangle, and the length overall L1 of slide block 11 is less than the maximum back gauge in valve seat 13 3 holes, and both sides do not have the structure of fluting perforate.In selector valve, the implication of above-mentioned middle flow does, when slide block 11 is in the neutral position of four-way valve stroke; Be the symmetry center of slide block 11 when overlapping position (position shown in Figure 3) with the symmetry center of valve seat 13,13 of slide block 11 and valve seats form a through-flow S1, under the situation of setting pressure difference; The flow value that flows through this through-flow S1 is middle flow; Known technology by related domain can know that under the certain situation of pressure difference, flow area S1 more greatly then runner coefficient is big more; The flow that flows through is just big more, i.e. the fluctuation of the bigger then middle flow of the fluctuation of flow area S1 is just big more.In this existing technology, the length overall L1 of slide block 11 receives the restriction of production and processing precision level up till now after molding and forming, and the length overall L1 of slide block size after Overheating Treatment, grinding certainly exists certain fluctuation, promptly has certain processing cumulative limit value.Simultaneously, valve seat 13 also can make the length overall M1 in its valve seat 13 3 holes have certain processing cumulative limit value in course of working; The area of through-flow the S1 that valve seat 13 and slide block 11 form when the neutral position just fluctuates along with the fluctuation of the length overall M1 in total growth L1 of slide block 11 and valve seat 13 3 holes: when L1 gets minimum value, the area of through-flow S1 reached maximum when M1 got maximum value; When L1 gets maximum; Through-flow S1 area reached minimum value when M1 got minimum value; In case and flow area S1 will directly influence the middle flow of four-way valve after changing, so just can't satisfy the requirement that the present situation frequency-conversion air-conditioning system is little to the fluctuation of four-way valve intermediate flow value, precision is high, and the fluctuation of flow need reduce the tolerance value of slide block 11 and valve seat 13 in the middle of reducing; Make processing cost too high, difficulty of processing is too high.
Therefore, how under the lower situation of processing cost and difficulty of processing, guarantee selector valve middle flow meet the requirement of frequency converting air conditioner to flow in the middle of the selector valve, the usability of raising frequency converting air conditioner just becomes the problem that those skilled in the art need solve.
Summary of the invention
The purpose of this invention is to provide a kind of slide block that is used for selector valve, its processing technology is comparatively simple, and middle flow can meet the requirement of frequency converting air conditioner for flow in the middle of the selector valve, thereby has improved the usability of frequency converting air conditioner.Another object of the present invention provides a kind of selector valve of above-mentioned slide block and frequency converting air conditioner that comprises this selector valve of comprising.
For solving the problems of the technologies described above; The present invention provides a kind of slide block that is used for selector valve; Comprise main part and flank, said slide block is greater than or equal to the outer wall distance of two valve openings farthest of said selector valve along the total length of its glide direction, offers the cell body that runs through its thickness direction on the said flank.
Preferably, along said slide block glide direction, the bottom land of said cell body is to the distance of the center line of said main part, less than said selector valve near the outer wall in the outermost hole of said cell body distance to said center line.
Preferably, said bottom land is an arcuate structure, and said arcuate structure is to said direction protrusion near said main part.
Preferably, said arcuate structure is a semi-circle, and the radius of said semi-circle is 1/2nd of a said cell body width.
Preferably, the number of said flank is two, and the glide direction of the said slide block in two said flanks edges is symmetricly set in the both sides of said main part, all offers said cell body on the two said flanks.
Preferably, the structure of two said cell bodies is identical, and symmetrical with respect to the center line of said main part.
Preferably, the width range of said cell body is greater than 0mm, less than 1/2nd of the valve opening aperture of said selector valve.
Preferably, said cell body is greater than 0mm along the scope of the groove depth of said slide block glide direction, poor less than the valve base sealing Effective face width of said slide block one-sided seal f ace width and said selector valve in the longitudinal direction.
The present invention also provides a kind of selector valve, comprises slide block, and said slide block is as above-mentioned each described slide block.
The present invention also provides a kind of frequency converting air conditioner, comprises selector valve, and said selector valve is the as above described selector valve of bar.
The slide block that is used for selector valve provided by the present invention comprises main part and flank, and said slide block is greater than or equal to the outer wall distance of two valve openings farthest of said selector valve along the total length of its glide direction, offers the cell body that runs through its thickness direction on the said flank.Like this; Accomplish after offering cell body on the slide block, slide block is when mediating, and the area of the via intermedia face that slide block and valve seat form is by the width decision of length and cell body; Because under same length change value; The width of cell body has reduced the influence of length change to the variable quantity of through-flow area, thereby has reduced the influence of length change to intermediate flow much smaller than through-flow width of existing technology slide block and valve seat formation; Improve the control accuracy of middle flow, improved the usability of frequency converting air conditioner; And this slide block only needs on its flank, to offer through hole, and is lower for the requirement of machining accuracy, so machining process is comparatively simple, and cost of production is lower.
A kind of preferred embodiment in, along said slide block glide direction, the bottom land of said cell body is to the distance of the center line of said main part, less than the outer wall in the outermost hole of the said selector valve distance to said center line; Like this, guaranteed that when slide block was in the neutral position of valve body, the circulating face of medium can be formed between valve body and the cell body, thereby guaranteed the functional reliability of slide block structure.
Description of drawings
Fig. 1 is the partial structurtes schematic representation of four-way change-over valve in a kind of typical air-conditioning system;
Fig. 2 is the structural representation of slide block in the four-way change-over valve shown in Figure 1;
Fig. 3 is the schematic representation of the middle flow that produces in the slide block work shown in Figure 2;
Fig. 4 is the sectional view of a kind of embodiment of slide block provided by the present invention;
Fig. 5 overlooks the structural representation of direction for slide block shown in Figure 4;
Sectional view when Fig. 6 is in the valve body meta for slide block shown in Figure 4;
The structural representation of the middle flow when Fig. 7 is in the valve body meta for slide block shown in Figure 4.
Embodiment
Core of the present invention provides a kind of slide block that is used for selector valve, and its processing technology is comparatively simple, and middle flow can meet the requirement of frequency converting air conditioner for flow in the middle of the selector valve, thereby has improved the usability of frequency converting air conditioner.Another core of the present invention provides a kind of selector valve of above-mentioned slide block and frequency converting air conditioner that comprises this selector valve of comprising.
In order to make those skilled in the art person understand technological scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the sectional view of a kind of embodiment of slide block provided by the present invention; Fig. 5 overlooks the structural representation of direction for slide block shown in Figure 4.
In a kind of embodiment; Slide block provided by the present invention is used for selector valve, and in the selector valve in particular for frequency-conversion air-conditioning system, this slide block comprises main part 21 and flank 22; And its top is processed with step; And match with above-mentioned connecting rod through step, the bottom of slide block has inner chamber, is formed the circulation of fluid of a sealing through inner chamber by a winding pipe; Another winding pipe is through the circulation of fluid of another sealing of inner chamber formation of valve body, and the path of two groups of circulation of fluid is separated by the main part 21 of slide block mutually.When air-conditioning need freeze; Under the effect of pilot valve; Make and form pressure difference between left chamber and the right chamber of main valve; The left and right pressure differential between chambers of main valve promotes slide block and two-piston moves, and makes the refrigeration agent of internal system flow to the compressor air suction mouth from exhaust outlet of compressor, and system is in the refrigeration work state; When air-conditioning needs heating operation, same under the effect of pilot valve, make to form pressure difference between the left and right sides chamber of main valve, this pressure difference promotes slide block and moves in the opposite direction with two-piston, makes refrigeration agent flow to the compressor air suction mouth certainly, and system is in and heats working state.This slide block is greater than or equal to the outer wall distance of two valve openings farthest of selector valve along the total length of its glide direction, offers the cell body 4 that runs through flank 22 thickness directions on the flank 22.
It is pointed out that on the valve body of selector valve to offer three valve openings usually that three valve openings evenly are provided with along the length direction (also being the glide direction of slide block) of valve body substantially.Above-mentioned two valve openings farthest are meant two valve openings at the edge that is in valve body; Also be left side and two valve openings on right side among Fig. 7; The outer wall of valve opening is meant the sidewall away from a side of valve body center line, also is the sidewall of the rightmost side of sidewall and right side valve opening of the leftmost side of the left side valve opening among Fig. 7.The thickness direction of above-mentioned flank 22 is meant sidewall thickness on the vertical direction in Fig. 4.
Like this; Accomplish after offering cell body 4 on the slide block, slide block is when mediating, and the area of the via intermedia face that slide block and valve seat 3 form is by the width decision of length and cell body 4; Because under same length change value; The width of cell body 4 has reduced the influence of length change to the variable quantity of through-flow area, thereby has reduced the influence of length change to intermediate flow much smaller than through-flow width of existing technology slide block and valve seat 3 formation; Improve the control accuracy of middle flow, improved the usability of frequency converting air conditioner; And this slide block only needs on its flank 22, to offer through hole, and is lower for the requirement of machining accuracy, so machining process is comparatively simple, and cost of production is lower.
Along said slide block glide direction, the bottom land of above-mentioned cell body 4 is to the distance of the center line of main part 21, less than selector valve near the outer wall in the outermost hole 31 of said cell body 4 distance to center line; Like this, guaranteed when slide block is in the neutral position of valve body that the circulating face of medium can be formed between valve body and the cell body 4, thereby guaranteed the functional reliability of slide block structure.
The bottom land of above-mentioned cell body 4 is meant the cell wall of cell body 4 near said main part 21 directions, and above-mentioned outermost hole (31) is meant in above-mentioned left hole and the right ports that near the valve opening of cell body 4 one sides, outer wall is meant the sidewall away from said main part 21.
Above-mentioned bottom land can be arcuate structure, and this arcuate structure is to the direction protrusion near main part 21; Here owing to be fillet, the phenomenon that the stress that can avoid effectively producing in the work is concentrated has improved the impact resistance of cell body 4, the working life of having improved slide block.
Apparently, above-mentioned cell body 4 also is not limited to arcuate structure, and it also can be plane structure or irregular curvilinear structures.
This arcuate structure can be semi-circle, and the radius of this semi-circle is 1/2nd of said cell body 4 width; This kind size design can either satisfy the use and the structural requirement of cell body 4, again can the simplified processing process process, save production cost.
Apparently, above-mentioned arcuate structure also is not limited to the structure of the semi-circle of standard, and it also can be other arcuate structures; Elliptic arc for example; The structural type that is perhaps combined by the multistage arc, the main effect of the arcuate structure here are the stress concentration phenomenon of avoiding right-angle structure to cause, therefore; As long as can realize the purpose that it avoids stress to concentrate, the specific constructive form of this arcuate structure is not done qualification at this.
The number of the flank 22 of above-mentioned slide block can be two, and two flanks 22 are symmetricly set in the both sides of said main part 21 along the glide direction of slide block, and on two flanks 22, all offer cell body 4; Because the flank mostly 22 in the existing slide block structure is two and is symmetricly set in the both sides of main part 21, therefore, slide block structure of the present invention is designed to the improvement step that existing slide block can be simplified by above mechanism, reduces the improvement cost that has slide block now.
The structure of above-mentioned two cell bodies 4 is identical, and symmetrical with respect to the center line of said slide block.
The width range of above-mentioned cell body 4 is greater than 0mm, less than 1/2nd of the valve opening aperture of selector valve; Because the width of cell body 4 is more little, the precision of middle flow is high more under identical part processing precision, and because the restriction of processing technology level; The width of cell body 4 can't unconfinedly reduce; In above-mentioned scope, can either satisfy the usage requirement of slide block, can guarantee to be easy to processing again.
Apparently, the width of cell body 4 also is not limited in the above-mentioned concrete scope, and theoretically, the width of cell body 4 also can be greater than 1/2nd of valve opening aperture, and still, the width of cell body 4 cannot be excessive, otherwise can't realize application target of the present invention.
Above-mentioned cell body 4 be greater than 0mm along the scope of the groove depth (N-L2)/2 of said slide block glide direction, seals the poor of effective width C less than said slide block one-sided seal f ace width B and the valve seat 3 of said selector valve in the longitudinal direction; Because it is constant for the area that guarantees through-flow S2 that the width of cell body 4 reduces the back; Need groove depth is deepened, but groove depth cannot infinitely deepen, make the sealing surface of slide block reduce because groove depth might produce interference after strengthening with the sealing of slide block and valve seat 3; So then have a negative impact; And in above-mentioned scope, not only can guarantee enough sealing surfaces between slide block and the valve seat 3, can guarantee that again the variation of through-flow S2 is less.
After completion is slotted with top slide block; Slide block is when mediating, and slide block and valve seat 3 have promptly formed medium through-flow face S2, because under same length change value; Groove width b of the present invention is much smaller than the width of through-flow S2 of existing technology slide block and valve seat 3 formation; Therefore through-flow area change amount of the present invention is less, and the variable quantity of through-flow area size directly influences the size of middle flow, therefore; Middle flowed fluctuation of the present invention is less, and promptly the middle flow control accuracy of slide block provided by the present invention is higher.
Except above-mentioned slide block, the present invention also provides a kind of selector valve that comprises above-mentioned slide block, and other each several part structures of this selector valve please refer to existing technology, repeat no more at this.
Concrete, above-mentioned selector valve can be four-way change-over valve.
Except above-mentioned selector valve and slide block thereof, the present invention also provides a kind of frequency converting air conditioner that comprises above-mentioned selector valve, and other each several part structures of this frequency converting air conditioner please refer to existing technology, repeat no more at this.
More than to the frequency converting air conditioner of selector valve provided by the present invention and slide block and this selector valve of use, the slide block of its selector valve and this selector valve has carried out detailed introduction.Used concrete example among this paper 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 (10)
1. slide block that is used for selector valve; Comprise main part (21) and flank (22); It is characterized in that said slide block is greater than or equal to the outer wall distance of two valve openings farthest of said selector valve along the total length of its glide direction, offers the cell body (4) that runs through its thickness direction on the said flank (22).
2. the slide block that is used for selector valve according to claim 1; It is characterized in that; Along said slide block glide direction; The bottom land of said cell body (4) is to the distance of the center line of said main part (21), less than said selector valve near the outer wall in the outermost hole (31) of said cell body distance to said center line.
3. the slide block that is used for selector valve according to claim 2 is characterized in that, said bottom land is an arcuate structure, and said arcuate structure is to said direction protrusion near said main part (21).
4. the slide block that is used for selector valve according to claim 3 is characterized in that, said arcuate structure is a semi-circle, and the radius of said semi-circle is 1/2nd of said cell body (a 4) width.
5. the slide block that is used for selector valve according to claim 4; It is characterized in that; The number of said flank (22) is two, and the glide direction of the said slide block in two said flanks (22) edge is symmetricly set in the both sides of said main part (21), all offers said cell body (4) on the two said flanks (22).
6. the slide block that is used for selector valve according to claim 5 is characterized in that, the structure of two said cell bodies (4) is identical, and symmetrical with respect to the center line of said main part (21).
7. according to each described slide block that is used for selector valve of claim 1 to 6, it is characterized in that the width range of said cell body (4) is greater than 0mm, less than 1/2nd of the valve opening aperture of said selector valve.
8. according to each described slide block that is used for selector valve of claim 1 to 6; It is characterized in that; Said cell body (4) be greater than 0mm along the scope of the groove depth of said slide block glide direction, seals the poor of Effective face width less than said slide block one-sided seal f ace width and the valve seat (3) of said selector valve in the longitudinal direction.
9. a selector valve comprises slide block, it is characterized in that, said slide block is like each described slide block of claim 1 to 8.
10. a frequency converting air conditioner comprises selector valve, it is characterized in that, said selector valve is a selector valve as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105784869A CN102537398A (en) | 2010-12-08 | 2010-12-08 | Reversing valve and sliding block of reversing valve as well as frequency conversion air conditioner using reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105784869A CN102537398A (en) | 2010-12-08 | 2010-12-08 | Reversing valve and sliding block of reversing valve as well as frequency conversion air conditioner using reversing valve |
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| Publication Number | Publication Date |
|---|---|
| CN102537398A true CN102537398A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105784869A Pending CN102537398A (en) | 2010-12-08 | 2010-12-08 | Reversing valve and sliding block of reversing valve as well as frequency conversion air conditioner using reversing valve |
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| Country | Link |
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| CN (1) | CN102537398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344014A (en) * | 2013-07-25 | 2015-02-11 | 珠海格力电器股份有限公司 | Four-way valve and air conditioner |
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| CN1601157A (en) * | 2004-10-21 | 2005-03-30 | 姜永明 | Electric four-way change valve |
| CN101205984A (en) * | 2006-12-19 | 2008-06-25 | 日立空调·家用电器株式会社 | Four-port conversion value and air conditioner using the same |
| CN101644347A (en) * | 2008-08-07 | 2010-02-10 | 株式会社不二工机 | Valve core for four-way switching valve and four-way switching valve thereof |
| CN101858447A (en) * | 2009-04-13 | 2010-10-13 | 浙江三花制冷集团有限公司 | Slide block, main valve of four-way reversing valve using same and four-way reversing valve |
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2010
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6298872U (en) * | 1985-12-12 | 1987-06-24 | ||
| JPS62162469U (en) * | 1986-04-04 | 1987-10-15 | ||
| JPH0452671U (en) * | 1990-09-11 | 1992-05-06 | ||
| CN1601157A (en) * | 2004-10-21 | 2005-03-30 | 姜永明 | Electric four-way change valve |
| CN101205984A (en) * | 2006-12-19 | 2008-06-25 | 日立空调·家用电器株式会社 | Four-port conversion value and air conditioner using the same |
| CN101644347A (en) * | 2008-08-07 | 2010-02-10 | 株式会社不二工机 | Valve core for four-way switching valve and four-way switching valve thereof |
| CN101858447A (en) * | 2009-04-13 | 2010-10-13 | 浙江三花制冷集团有限公司 | Slide block, main valve of four-way reversing valve using same and four-way reversing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104344014A (en) * | 2013-07-25 | 2015-02-11 | 珠海格力电器股份有限公司 | Four-way valve and air conditioner |
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Application publication date: 20120704 |