CN102620491A - Refrigerating system and thermoexpension valve thereof - Google Patents
Refrigerating system and thermoexpension valve thereof Download PDFInfo
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- CN102620491A CN102620491A CN2011100337882A CN201110033788A CN102620491A CN 102620491 A CN102620491 A CN 102620491A CN 2011100337882 A CN2011100337882 A CN 2011100337882A CN 201110033788 A CN201110033788 A CN 201110033788A CN 102620491 A CN102620491 A CN 102620491A
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- valve
- heating power
- power expansion
- spool
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Abstract
The invention discloses a thermoexpension valve, which comprises a valve body (1) which is provided with a valve seat (2), wherein the valve seat (2) is provided with a valve seat inner bore (21) which is matched with a valve plug component (3), and when the valve seat inner bore (21) and the valve plug component (3) are closed, an inner cavity of the valve body (1) is separated into a first interface cavity (11) and a second interface cavity (12); the valve plug component (3) is provided with a valve plug (31) which seals or opens the lower part of the valve seat inner bore (21); and the valve plug component (3) is also provided with a guide part (32) which is arranged above the valve plug (31) and in the valve seat inner bore (21), and a channel for communicating the first interface cavity (11) with the second interface cavity (12) when the valve plug (31) is opened is arranged on the guide part (32). The structure design of the thermoexpension valve is adopted, on one hand, the movement stability of the valve plug (31) can be improved, on the other hand, the costs of the materials of the valve body and the guide part (32) are reduced. In addition, the invention further discloses a refrigerating system which comprises the thermoexpension valve.
Description
Technical field
The present invention relates to the fluid control component technical field, particularly a kind of heating power expansion valve.In addition, the invention still further relates to a kind of refrigeration system that comprises this heating power expansion valve.
Background technology
Heating power expansion valve is a vitals of forming refrigeration system, is to remove another basic element of character outside evaporimeter, compressor and the condenser in four basic elements of character of refrigeration system.The main effect of heating power expansion valve is to suck the aperture size that the degree of superheat of holding is come control valve through evaporator outlet end or compressor in the induction refrigeration system, thereby the system of realization cold medium flux is regulated and the purpose of throttling step-down.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical heating power expansion valve in the prior art.
The heating power expansion valve of this prior art comprise valve body 1 '; Valve body 1 ' the upper end be provided with air tank head 5 '; Air tank head 5 ' inner chamber be divided into epicoele 5 ' 1 and cavity of resorption 5 ' 2 by diaphragm 5 ' 3; Epicoele 5 ' 1 is connected with the temperature sensing part 5 ' 5 of being located at evaporator outlet end or suction port of compressor end through capillary 5 ' 4, and temperature sensing part 5 ' 5 is used for experiencing the degree of superheat of evaporator outlet end or suction port of compressor end, thereby in epicoele 5 ' 1, produces a temperature, pressure P
bIn addition; As shown in Figure 1; Be provided with driver blade 6 ' 1 in the cavity of resorption 5 ' 2, this driver blade 6 ' 1 is through drive link 6 ' 2 and valve hole part 3 ' be connected, particularly; Drive link 6 ' 2nd, with valve hole part 3 ' spool guide holder 3 ' 2 be connected, valve hole part 3 ' spool 3 ' 1 be used to seal or open be located at valve seat 2 ' on valve seat endoporus 2 ' 1; Cavity of resorption 5 ' 2 is communicated with evaporator outlet end or suction port of compressor end through the balance pipe (not shown in figure 1), thereby can in cavity of resorption 5 ' 2, produce an evaporating pressure P
oMoreover, as shown in Figure 1, spool guide holder 3 ' 2 bottoms be connected with elastomeric element 4 ', this elastomeric element 4 ' give elastic force P that 3 ' one of valve hole parts make progress
t
As shown in Figure 1, the temperature, pressure P in the epicoele 5 ' 1
bBe the power that makes valve hole part 3 ' unlatching, the evaporating pressure P in the cavity of resorption 5 ' 2
oWith elastic force P
tBe the power of valve hole part 3 ' close that makes, thereby work as P
b=P
o+ P
tThe time, valve hole part 3 ' be in poised state, cold-producing medium is taken over 7 ' 1 with fixing flow by first and is flowed to second adapter 7 ' 2, perhaps takes over 7 ' 2 by second and flows to first adapter 7 ' 1.When the temperature of evaporator outlet end is too high, P
bIncrease, move downward thereby promote spool 3 ' 1, thus the flow of increase refrigerant; When the temperature of evaporator outlet end is crossed when low P
bReduce, thereby promotion spool 3 ' 1 moves upward, thereby reduce the flow of refrigerant.
Yet there is following defective in above-mentioned heating power expansion valve of the prior art:
First; In order to guarantee that cold-producing medium flows to second hub cavity 1 ' 2 by first hub cavity 1 ' 1 comparatively swimmingly; Perhaps flow to first hub cavity 1 ' 1 by second hub cavity 1 ' 2; The upper end of spool guide holder 3 ' 2 is provided with step surface 3 ' 21, and makes this step surface 3 ' 21 flush with the minimum point of second adapter 1 ' 2 as far as possible, thereby reduces flow resistance.Yet this kind structural design makes that the distance between the vertical spigot surface of spool 3 ' 1 and spool guide holder 3 ' 2 is excessive, thereby has weakened the guide effect of 3 ' 2 pairs of spools 3 ' 1 of spool guide holder, causes the less stable of spool 3 ' 1 motions.
The second, valve hole part 3 ' two parts in, spool guide holder 3 ' 2 is located at the below of spool 3 ' 1, and be located at valve body 1 ' inner chamber in, thereby cause the volume of spool guide holder 3 ' 2 bigger, increased the expenditure of material cost; And because of spool guide holder 3 ' 2 in the lower end, step surface 3 ' 21 as far as possible takes over 1 ' 2 minimum point and flushes with second again, increased valve body 1 ' length and material cost expenditure.
In view of this, how heating power expansion valve of the prior art being made improvement, thereby improve the stability of valve core movement, and reduce the expenditure of guide part material cost, is the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem that the present invention will solve is for providing a kind of heating power expansion valve, and the structural design of this heating power expansion valve can improve the stability of valve core movement on the one hand, can reduce the expenditure of guide part material cost on the other hand.In addition, another technical problem that will solve of the present invention is that a kind of refrigeration system that comprises this heating power expansion valve is provided.
For solving the problems of the technologies described above, the present invention provides a kind of heating power expansion valve, comprises the valve body that is provided with valve seat, and said valve seat is provided with the valve seat endoporus that cooperates with valve hole part, and the two inner chamber of separating said valve body when closed is first hub cavity and second hub cavity; Said valve hole part is provided with sealing or opens the spool of said valve seat endoporus bottom; Said valve hole part also is provided with the top that is connected in said spool and is located at the guide part in the said valve seat endoporus, and said guide part is provided with the passage that is communicated with said first hub cavity and said second hub cavity when said spool is opened.
Preferably, said guide part comprises central part and along a plurality of guiding ribs of the circumferential setting of said central part, the hole wall applying of the peripheral side of each said guiding rib and said valve seat endoporus, and the gap between two adjacent said guiding ribs forms said passage.
Preferably, the below of said spool further is connected with spring base; Said spring base comprises the spring base body and is located at the location division of said spring base body below that the upper end of the elastomeric element of said heating power expansion valve cooperates with said location division.
Preferably, said location division is a positioning boss, and the outside of said positioning boss is located in the upper end of said elastomeric element.
Preferably, said spool and the said spring base part that is integrated.
Preferably, said spool and said spring base are for dividing body structure; The below of said spool is provided with bevel phase and is connected in the cylindrical section of bevel phase below, and said spring base is provided with central through hole, and said spring base is located at the outside of said cylindrical section with its central through hole, and said spring base body is connected with said bevel phase.
Preferably, said location division is a locating hole, and the upper end of the elastomeric element of said heating power expansion valve is located in the said locating hole.
Preferably, said spool and said spring base are for dividing body structure; Said spring base body is provided with central through hole, and the below of said spool is connected with cylindrical section, and said spring base body is connected in the outside of said cylindrical section with its central through hole.
Preferably, said spool and the said guide part part that is integrated.
In addition, for solving the problems of the technologies described above, the present invention also provides a kind of refrigeration system, comprises compressor, heating power expansion valve, evaporimeter and condenser; Said heating power expansion valve is above-mentioned each described heating power expansion valve, and the epicoele of the air tank head of said heating power expansion valve is connected with the port of export of said evaporimeter through temperature sensing part, and the cavity of resorption of said air tank head is communicated with the port of export of said evaporimeter.
On the basis of existing technology; The valve hole part of heating power expansion valve provided by the present invention also is provided with the top that is connected in said spool and is located at the guide part in the said valve seat endoporus, and said guide part is provided with the passage that is communicated with said first hub cavity and said second hub cavity when said spool is opened.Guide part plays guide effect to spool in the valve seat endoporus, when spool was opened, cold-producing medium flowed to second hub cavity through said passage by first hub cavity, perhaps flowed to first hub cavity by second hub cavity.Because guide part is located at the top of spool and is located in the valve seat endoporus, thereby the close together between guide part and the spool, guide part can be strengthened to the guide effect of spool, thereby the stability of valve core movement is significantly improved.In addition, because guide part is located in the valve seat endoporus, and the valve seat endoporus is significantly less than the inner chamber of valve body, thereby the material cost of guide part can significantly be reduced; Simultaneously guide part in the upper end, lower end spring base end need not lead, and can reduce the spring base external diameter, with regard to the restriction that does not have step surface and second is taken in the prior art minimum point to flush, thereby make and shorten valve body length and the minimizing material consumption becomes possibility.
In sum, heating power expansion valve provided by the present invention can improve the stability of valve core movement on the one hand, can reduce the expenditure of valve body and guide part material cost on the other hand.
In addition, the refrigeration system that comprises above-mentioned heating power expansion valve provided by the present invention, its technique effect is identical with the technique effect of above-mentioned heating power expansion valve, repeats no more at this.
Description of drawings
Fig. 1 is the structural representation of a kind of typical heating power expansion valve in the prior art;
Fig. 2 is the structural representation of heating power expansion valve among first kind of embodiment of the present invention;
Fig. 3 is the structural representation of the valve hole part of heating power expansion valve among Fig. 2;
Fig. 4 is the cutaway view of valve hole part among Fig. 2;
Fig. 5 is the structural representation of the valve hole part of heating power expansion valve among second kind of embodiment of the present invention;
Fig. 6 is the cutaway view of valve hole part among Fig. 5;
Fig. 7 is the structural representation of the valve hole part of heating power expansion valve among the third embodiment of the present invention;
Fig. 8 is the cutaway view of valve hole part among Fig. 7.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1:
1 ' valve body; 1 ' 1 first hub cavity; 1 ' 2 second hub cavity; 2 ' valve seat; 2 ' 1 valve seat endoporus;
3 ' valve hole part; 3 ' 1 spools; 3 ' 2 spool guide holders; 3 ' 21 step surfaces; 4 ' elastomeric element;
5 ' air tank head; 5 ' 1 epicoeles; 5 ' 2 cavity of resorptions; 5 ' 3 diaphragms; 5 ' 4 capillaries; 5 ' 5 temperature sensing part; 6 ' 1 driver blades; 6 ' 2 drive links; 7 ' 1 first take over; 7 ' 2 second take over.
Corresponding relation among Fig. 2 to Fig. 8 between Reference numeral and the component names is:
1 valve body; 11 first hub cavity; 12 second hub cavity; 2 valve seats; 21 valve seat endoporus;
3 valve hole parts; 31 spools; The 31a bevel phase; The 31b cylindrical section; 32 guide parts; The 32a central part; The 32b guiding rib; 33 spring bases; 33a spring base body; The 33b location division;
4 elastomeric elements; 5 air tank heads; 51 epicoeles; 52 cavity of resorptions; 53 diaphragms;
61 driver blades; 62 drive links; 71 first take over; 72 second take over.
The specific embodiment
Core of the present invention is for providing a kind of heating power expansion valve, and the structural design of this heating power expansion valve can improve the stability of valve core movement on the one hand, can reduce the expenditure of valve body and guide part material cost on the other hand.In addition, another core of the present invention is that a kind of refrigeration system that comprises this heating power expansion valve is provided.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 2, Fig. 3 and Fig. 4, Fig. 2 is the structural representation of heating power expansion valve among first kind of embodiment of the present invention; Fig. 3 is the structural representation of the valve hole part of heating power expansion valve among Fig. 2; Fig. 4 is the cutaway view of valve hole part among Fig. 2.
As shown in Figure 2; Heating power expansion valve comprises valve body 1; The upper end of valve body 1 is provided with air tank head 5, and the inner chamber of air tank head 5 is divided into epicoele 51 and cavity of resorption 52 by diaphragm 53, and epicoele 51 is connected with the temperature sensing part of being located at evaporator outlet end or suction port of compressor end through capillary; Temperature sensing part is used for experiencing the degree of superheat of evaporator outlet end or suction port of compressor end, thereby in epicoele 51, produces a temperature, pressure P
bIn addition, as shown in Figure 1, be provided with driver blade 61 in the cavity of resorption 52, this driver blade 61 is connected with valve hole part 3 through drive link 62, and the spool 31 of valve hole part 3 is used to seal or open the valve seat endoporus of being located on the valve seat 2 21; Cavity of resorption 52 is communicated with evaporator outlet end or suction port of compressor end through balance pipe (not shown among Fig. 2), thereby can in cavity of resorption 2, produce an evaporating pressure P
oMoreover as shown in Figure 2, valve hole part 3 belows are connected with elastomeric element 4, and this elastomeric element 4 gives the elastic force P that 3 one of valve hole parts make progress
t
As shown in Figure 2, the temperature, pressure P in the epicoele 51
bBe the power that makes that valve hole part 3 is opened, the evaporating pressure P in the cavity of resorption 52
oWith elastic force P
tBe the power that makes that valve hole part 3 is closed, thereby work as P
b=P
o+ P
tThe time, valve hole part 3 is in poised state, and cold-producing medium is taken over 71 with fixing flow by first and is flowed to second adapter 72, perhaps takes over 72 by second and flows to first adapter 71.When the temperature of evaporator outlet end is too high, P
bIncrease, move downward thereby promote spool 31, thus the flow of increase refrigerant; When the temperature of evaporator outlet end is crossed when low P
bReduce, thereby promotion spool 31 moves upward, thereby reduce the flow of refrigerant.
As shown in Figure 2; In basic technology scheme of the present invention; On the basis of above-mentioned prior art, valve hole part 3 also comprises guide part 32, and this guide part 32 is connected in the top of spool 31 and is located in the valve seat endoporus 21; And as shown in Figure 4, guide part 32 is provided with the passage that is communicated with first hub cavity 11 and second hub cavity 12 when spool 31 is opened.
Need to prove; Above-mentioned basic technology scheme does not all limit for the structure of guide part 32 and the structure of passage; Any guide part 32; As long as can be located in the valve seat endoporus 21 and play guide effect, as long as can being located at, any passage is used on the guide part 32 when spool 31 is opened, being communicated with first hub cavity 11 and second hub cavity 12, just all should be within protection scope of the present invention.
Certainly, can specifically design the structure of a kind of guide part 32 and passage.Such as, please refer to Fig. 3, guide part 32 comprises central part 32a and along a plurality of guiding rib 32b of the circumferential setting of central part 32a, the gap between two adjacent guiding rib 32b forms said passage; As shown in Figure 2, the hole wall of the peripheral side of each guiding rib 32b and valve seat endoporus 21 is fitted, and is used under the location of the hole wall of valve seat endoporus 21, playing guide effect.When spool 31 was opened, cold-producing medium flowed to second hub cavity 12 through the gap between the guiding rib 32b by first hub cavity 11, perhaps flows to first hub cavity 11 by second hub cavity 12.
Like Fig. 3 and shown in Figure 4, in above-mentioned basic technology scheme, the below of spool 31 further is connected with spring base 33; Spring base 33 comprises spring base body 33a and location division 33b, and this location division 33b is connected in the below of spring base body 33a, is used for the elastomeric element 4 of heating power expansion valve is positioned.
Particularly, in first kind of embodiment of the present invention, like Fig. 3 and shown in Figure 4, location division 33b is positioning boss, and is as shown in Figure 2, and the outside of said positioning boss can be located in the upper end of elastomeric element 4.In the present embodiment, spool 31 and spring base 33 part that can further be integrated, this kind structural design can reduce number of components and parts, thereby reduces rigging error.
Please refer to Fig. 5 and Fig. 6, Fig. 5 is the structural representation of the valve hole part of heating power expansion valve among second kind of embodiment of the present invention; Fig. 6 is the cutaway view of valve hole part among Fig. 5.
On the basis of above-mentioned basic technology scheme, make another kind of the improvement, just can obtain second kind of embodiment of the present invention.Particularly, in this second kind of embodiment, location division 33b also is a positioning boss, and the outside of this positioning boss can be located in the upper end of elastomeric element 4.And in this embodiment, spool 31 is the branch body structure with spring base 33, and spring base 33 is connected on the spool 31.
Particularly; As shown in Figure 6, the below of spool 31 is provided with bevel phase 31a and is connected in the cylindrical section 31b of bevel phase 31a below, and spring base 33 is provided with central through hole; Spring base 33 is located at the outside of cylindrical section 31b with its central through hole, and spring base body 33a is connected with bevel phase 31a.Particularly, spring base body 33a is connected on the bevel phase 31a.
Spool 31 and spring base 33 are for dividing a body structure, and two parts are processed respectively, and then connect, and this kind structural design can be saved material with respect to the be integrated design of part of spool among above-mentioned first kind of embodiment 31 and spring base 33, reduces cost.
Please refer to Fig. 7 and Fig. 8, Fig. 7 is the structural representation of the valve hole part of heating power expansion valve among the third embodiment of the present invention; Fig. 8 is the cutaway view of valve hole part among Fig. 7.
The third embodiment provided by the present invention also is on the basis of above-mentioned basic technology scheme, to do to such an extent that improve.Particularly, in this third embodiment, like Fig. 7 and shown in Figure 8, location division 33b is a locating hole, and the upper end of the elastomeric element 4 of said heating power expansion valve is located in the said locating hole.
Particularly, in this third embodiment, for saving material, reduce cost, spool 31 also can be the split structure with spring base 33; Particularly, as shown in Figure 8, spring base body 33a is provided with central through hole, and the below of spool 31 is connected with cylindrical section 31b, and spring base body 33a is connected in the outside of cylindrical section 31b with its central through hole.Particularly, spring base body 33a press-fits in the outside of cylindrical section 31b through its central through hole.
In addition, need to prove that in above-mentioned any technical scheme, spool 31 and guide part 32 part that can be integrated can also divide body structure, and then link together, the present invention does not limit this.
In addition, in addition, the present invention also provides a kind of refrigeration system, comprises compressor, heating power expansion valve, evaporimeter and condenser; Said heating power expansion valve is the heating power expansion valve among above-mentioned any embodiment, and epicoele 51 is connected with the port of export of said evaporimeter through temperature sensing part, and cavity of resorption 52 is communicated with the port of export of said evaporimeter through balance pipe; This refrigeration system specifically can be heat pump or air-conditioning, and other parts of said refrigeration system can be with reference to prior art, and this paper no longer launches.
More than refrigeration system provided by the present invention and heating power expansion valve thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment 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. a heating power expansion valve comprises the valve body (1) that is provided with valve seat (2), and said valve seat (2) is provided with the valve seat endoporus (21) that cooperates with valve hole part (3), and the two inner chamber of separating said valve body (1) when closed is first hub cavity (11) and second hub cavity (12); Said valve hole part (3) is provided with sealing or opens the spool (31) of said valve seat endoporus (21) bottom; It is characterized in that; Said valve hole part (3) also is provided with the top that is connected in said spool (31) and is located at the guide part (32) in the said valve seat endoporus (21), and said guide part (32) is provided with the passage that is communicated with said first hub cavity (11) and said second hub cavity (12) when said spool (31) is opened.
2. heating power expansion valve as claimed in claim 1; It is characterized in that; Said guide part (32) comprises a plurality of guiding ribs (32b) of the circumferential setting of central part (32a) and the said central part in edge (32a); The hole wall of the peripheral side of each said guiding rib (32b) and said valve seat endoporus (21) is fitted, and the gap between two adjacent said guiding ribs (32b) forms said passage.
3. heating power expansion valve as claimed in claim 1 is characterized in that, the below of said spool (31) further is connected with spring base (33); Said spring base (33) comprises spring base body (33a) and is located at the location division (33b) of said spring base body (33a) below that the upper end of the elastomeric element of said heating power expansion valve (4) cooperates with said location division (33b).
4. heating power expansion valve as claimed in claim 3 is characterized in that, said location division (33b) is positioning boss, and the outside of said positioning boss is located in the upper end of said elastomeric element (4).
5. heating power expansion valve as claimed in claim 4 is characterized in that, said spool (31) and said spring base (33) part that is integrated.
6. heating power expansion valve as claimed in claim 4 is characterized in that, said spool (31) is the branch body structure with said spring base (33); The below of said spool (31) is provided with bevel phase (31a) and is connected in the cylindrical section (31b) of bevel phase (31a) below; Said spring base (33) is provided with central through hole; Said spring base (33) is located at the outside of said cylindrical section (31b) with its central through hole, and said spring base body (33a) is connected with said bevel phase (31a).
7. heating power expansion valve as claimed in claim 3 is characterized in that, said location division (33b) is locating hole, and the upper end of the elastomeric element of said heating power expansion valve (4) is located in the said locating hole.
8. heating power expansion valve as claimed in claim 7 is characterized in that, said spool (31) is the branch body structure with said spring base (33); Said spring base body (33a) is provided with central through hole, and the below of said spool (31) is connected with cylindrical section (31b), and said spring base body (33a) is connected in the outside of said cylindrical section (31b) with its central through hole.
9. like each described heating power expansion valve of claim 1 to 8, it is characterized in that said spool (31) and said guide part (32) part that is integrated.
10. a refrigeration system comprises compressor, heating power expansion valve, evaporimeter and condenser; It is characterized in that; Said heating power expansion valve is each described heating power expansion valve of claim 1 to 9; The epicoele (51) of the air tank head of said heating power expansion valve (5) is connected with the port of export of said evaporimeter through temperature sensing part, and the cavity of resorption (52) of said air tank head (5) is communicated with the port of export of said evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110033788.2A CN102620491B (en) | 2011-01-31 | 2011-01-31 | Refrigeration system and heating power expansion valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110033788.2A CN102620491B (en) | 2011-01-31 | 2011-01-31 | Refrigeration system and heating power expansion valve thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102620491A true CN102620491A (en) | 2012-08-01 |
| CN102620491B CN102620491B (en) | 2016-06-01 |
Family
ID=46560570
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110033788.2A Active CN102620491B (en) | 2011-01-31 | 2011-01-31 | Refrigeration system and heating power expansion valve thereof |
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| CN (1) | CN102620491B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033689A (en) * | 2019-03-29 | 2019-07-19 | 罗彬彬 | A kind of teaching displaying expansion valve rack |
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|---|---|---|---|---|
| US5243829A (en) * | 1992-10-21 | 1993-09-14 | General Electric Company | Low refrigerant charge detection using thermal expansion valve stroke measurement |
| JPH09222268A (en) * | 1995-12-14 | 1997-08-26 | Tgk Co Ltd | Expansion valve |
| JPH10220926A (en) * | 1997-02-03 | 1998-08-21 | Denso Corp | Motor expansion valve |
| CN1912429A (en) * | 2005-08-12 | 2007-02-14 | 浙江三花制冷集团有限公司 | Temp. expansion valve |
| CN101650102A (en) * | 2008-08-11 | 2010-02-17 | 浙江三花汽车控制系统有限公司 | Heating power expansion valve |
| CN201696733U (en) * | 2010-06-02 | 2011-01-05 | 上海威乐汽车空调器有限公司 | Anti-noise structure of automobile air-conditioning thermostatic expansion valve |
-
2011
- 2011-01-31 CN CN201110033788.2A patent/CN102620491B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5243829A (en) * | 1992-10-21 | 1993-09-14 | General Electric Company | Low refrigerant charge detection using thermal expansion valve stroke measurement |
| JPH09222268A (en) * | 1995-12-14 | 1997-08-26 | Tgk Co Ltd | Expansion valve |
| JPH10220926A (en) * | 1997-02-03 | 1998-08-21 | Denso Corp | Motor expansion valve |
| CN1912429A (en) * | 2005-08-12 | 2007-02-14 | 浙江三花制冷集团有限公司 | Temp. expansion valve |
| CN101650102A (en) * | 2008-08-11 | 2010-02-17 | 浙江三花汽车控制系统有限公司 | Heating power expansion valve |
| CN201696733U (en) * | 2010-06-02 | 2011-01-05 | 上海威乐汽车空调器有限公司 | Anti-noise structure of automobile air-conditioning thermostatic expansion valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033689A (en) * | 2019-03-29 | 2019-07-19 | 罗彬彬 | A kind of teaching displaying expansion valve rack |
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| Publication number | Publication date |
|---|---|
| CN102620491B (en) | 2016-06-01 |
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