CN203132230U - Thermal expansion valve - Google Patents
Thermal expansion valve Download PDFInfo
- Publication number
- CN203132230U CN203132230U CN2013201359192U CN201320135919U CN203132230U CN 203132230 U CN203132230 U CN 203132230U CN 2013201359192 U CN2013201359192 U CN 2013201359192U CN 201320135919 U CN201320135919 U CN 201320135919U CN 203132230 U CN203132230 U CN 203132230U
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- Prior art keywords
- expansion valve
- valve
- heating power
- valve body
- power expansion
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Abstract
The utility model discloses a thermal expansion valve which comprises a valve body, wherein the valve body is provided with a balance cavity in which a spring component is placed; a gas tank is arranged at the upper end of the valve body; a transmission piece is arranged in a lower cavity of the gas tank and connected with one transmission rod; the transmission rod is located in the center of the valve body; the lower end of the transmission rod abuts against a guiding sheet arranged on the spring component; and a valve element matched with a valve port of the valve body is fixedly arranged on the guiding sheet. The thermal expansion valve is provided with only one transmission rod, so that the thermal expansion valve has only one outer balance leakage passageway; and compared with a thermal expansion valve provided with a plurality of transmission rods in prior art, the thermal expansion valve can better control outer balance leakage, and the refrigerating capacity of the thermal expansion valve is enhanced.
Description
Technical field
The utility model relates to refrigerant fluid control component technical field, particularly relates to a kind of heating power expansion valve.
Background technology
Heating power expansion valve is the important self controlled element of refrigeration system, it mainly acts on is the aperture size of coming control valve by the degree of superheat of evaporator outlet end or compressor suction side 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.
This heating power expansion valve comprises valve body 100, the upper end of valve body 100 is connected with the gas tank that comprises gas tank seat 201 gentle case lids 202, the inner chamber of this gas tank is divided into epicoele and cavity of resorption by diaphragm 203, epicoele is connected with temperature-sensitive bag 302 by capillary 301, temperature-sensitive bag 302 is used for experiencing the degree of superheat of the refrigerant of evaporator outlet end or suction port of compressor end, and produces a temperature, pressure P in epicoele
1Diaphragm 203 downsides are provided with driver blade 106, form first guide cavity between driver blade 106 and valve body 100 upper ends, outwards offer balance channel from first guide cavity, this balance channel is communicated with the evaporator outlet end by the outer balance pipe (not shown), thereby produces an evaporating pressure P in cavity of resorption
2
The valve port 109(that valve body 100 has an import 108, an outlet 107 and is communicated with import 108 and outlet 107 is shown among Fig. 3); Valve hole part comprises drive link 105 and spool 104, and the upper end of drive link 105 and driver blade 106 contact to respond the action of diaphragm 203, and the lower end extends valve port 109 downsides and conflicts on spool 104; Spool 104 is supported by spool supporting seat 103, and spool supporting seat 103 is supported by the regulating spring 102 that is arranged at its below, and the lower end of regulating spring 102 is supported by adjustment seat 101; Thereby spool 104 is subjected to the elastic force F that regulating spring 102 produces.
Be that stressed member carries out force analysis with spool 104, spool 104 is subjected to the elastic force F that makes progress that regulating spring 102 applies, and is subjected to the downward thrust that driver blade 106 transmits simultaneously, and this thrust is transmitted by diaphragm 203, that is the power P that is subjected to of diaphragm 203
1-P
2When spool 104 is in poised state, F=P
1-P
2When the temperature of evaporator outlet end raises, temperature, pressure P
1Increase, move downward thereby promote spool 104, increase the flow of refrigerant; When the temperature of evaporator outlet end reduces, temperature, pressure P
1Reduce, move upward thereby promote spool 104, reduce the flow of refrigerant.
For answering nominal refrigerating capacity or the less product of valve port, because processing difficulties, drive link 105 and spool 104 common splits designs.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the assembling schematic diagram between the drive link of heating power expansion valve among Fig. 1 and spool, the driver blade; Fig. 3 is the structural representation of the valve body of heating power expansion valve among Fig. 1.
The longitudinal center line of the valve port 109 of above-mentioned heating power expansion valve overlaps with the longitudinal center line of valve body 100, for balance and the stability that guarantees that drive link 105 cooperates with spool 104, is provided with two drive links 105 usually at least.Wherein, drive link 105 is matched in clearance with cooperating of valve body 100, and valve body 100 is provided with the drive link hole 110 that holds drive link 105; The gap that valve body 100 port of export low-pressure end refrigerants are easy to directly between the inwall in outer wall by drive link 105 and drive link hole 110 during work enters first guide cavity, and then flow to evaporimeter after the heating power expansion valve by balance channel, this leakage can be referred to as outer balance leakage.Because this heating power expansion valve adopts two drive links 105, so there is balance leakage path outside two places, make that outer balance leakage rate is bigger, cause refrigerating capacity to reduce, influence system's operate as normal.
In addition, two or more drive links 105 are set, are difficult to guarantee the length unanimity of drive link 105, thereby cause spool 104 deflections, make valve port 109 leak and exceed standard.
In view of this, demand urgently making improvements at existing heating power expansion valve, the outer balance leakage rate when reducing heating power expansion valve work is the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of this utility model provides a kind of heating power expansion valve, balance leakage rate outside this heating power expansion valve can reduce when work.
For solving the problems of the technologies described above, the utility model provides a kind of heating power expansion valve, comprises valve body, and described valve body has the counter balance pocket that is built-in with spring members; The upper end of described valve body is provided with gas tank, is provided with driver blade and the drive link that is connected with described driver blade in the cavity of resorption of described gas tank; The number of described drive link is one, and is positioned at the center of described valve body; The lower end of described drive link offsets with the prerotation vane that is arranged on the described spring members, is installed with the spool that cooperates with the valve port of described valve body on the described prerotation vane.
Preferably, also be provided with supporting seat between described prerotation vane and the described spring members.
Preferably, the upper end of described supporting seat and described prerotation vane clamping, the lower end of described supporting seat is plugged in described spring members.
Preferably, described spool is taper valve core.
Preferably, described spool is spherical valve core.
Preferably, described spool and described prerotation vane are wholely set.
Preferably, described spool is by being fixedly welded on described prerotation vane.
Preferably, described prerotation vane and described valve body matched in clearance.
Relative above-mentioned background technology, heating power expansion valve provided by the utility model changes the number of drive link into one by two on the basis of existing technology, thereby make drive link be positioned at the center of described thermal expansion valve body, driver blade in the upper end of drive link and the gas tank is connected, the lower end offsets with the prerotation vane of being located at the spring members upper end, also be installed with the spool that cooperates with the valve port of described valve body on the described prerotation vane, obviously, this moment, the relative valve body off-centre of valve port of heating power expansion valve arranged.Because heating power expansion valve only is provided with a drive link, so balance leakage path outside the place is only arranged, with respect to the heating power expansion valve that is provided with two or more drive links in the prior art, the heating power expansion valve that the utility model provides can be controlled outer balance better and leak, and improves the refrigerating capacity of heating power expansion valve.In addition, arrange though spool is eccentric, for the less product of valve port, the weight of spool can be ignored with respect to prerotation vane, so do not exist because the spool biasing causes the prerotation vane deflection, influences the problem of heating power expansion valve work.
A kind of preferred embodiment in, also be provided with supporting seat between described prerotation vane and the described spring members, described supporting seat can be regulated the deflection that described prerotation vane causes because of described spring members generation deflection, avoid prerotation vane and valve body to produce and interfere, further improve the start performance of described heating power expansion valve.
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 assembling schematic diagram between the drive link of heating power expansion valve among Fig. 1 and spool, the driver blade;
Fig. 3 is the structural representation of the valve body of heating power expansion valve among Fig. 1;
Fig. 4 provides the structural representation of a kind of specific embodiment of heating power expansion valve for the utility model;
Fig. 5 is the partial enlarged drawing at I position among Fig. 4;
Fig. 6 is the left view of the valve body of heating power expansion valve shown in Fig. 4;
Fig. 7 is the structural representation of the another kind of specific embodiment of heating power expansion valve that the utility model provides;
Fig. 8 is the partial enlarged drawing at II position among Fig. 7.
The specific embodiment
Core of the present utility model provides a kind of heating power expansion valve, balance leakage rate outside this heating power expansion valve can reduce when work.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 4, Fig. 5 and Fig. 6; Fig. 4 provides the structural representation of a kind of specific embodiment of heating power expansion valve for the utility model; Fig. 5 is the partial enlarged drawing at I position among Fig. 4; Fig. 6 is the left view of the valve body of heating power expansion valve shown in Fig. 4.
In a kind of specific embodiment, heating power expansion valve provided by the utility model comprises valve body 1; The upper end of valve body 1 is connected with the gas tank that comprises gas tank seat 21 gentle case lids 22, the inner chamber of this gas tank is divided into epicoele and cavity of resorption by diaphragm 23, described epicoele is connected with temperature-sensitive bag 32 by capillary 31, described temperature-sensitive bag 32 is used for experiencing the degree of superheat of the refrigerant of evaporator outlet end or suction port of compressor end, and produces a temperature, pressure P in epicoele
tDescribed cavity of resorption is provided with driver blade 11, form first guide cavity between driver blade 11 and valve body 1 upper end, outwards offer balance channel from first guide cavity, this balance channel is taken over 40(by outer balance and is shown among Fig. 6) be communicated with the evaporator outlet end, thus in described cavity of resorption, produce an evaporating pressure P
oSo diaphragm 23 is subjected to the temperature, pressure P from described epicoele
tEvaporating pressure P with described cavity of resorption
oActing in conjunction, it is stressed to be P
t-P
oDriver blade 11 also is connected with drive link 12, and the number of described drive link 12 is one, and is positioned at the center of described valve body 1.
The lower end of valve body 1 has counter balance pocket, and the upper end of described counter balance pocket is formed with valve port, and described valve body 1 also has an import 18 and an outlet 19, and described valve port is communicated with described import 18 and described outlet 19; Described valve port is combined with spool 14, and spool 14 is fixedly arranged on the prerotation vane 13, and prerotation vane 13 offsets with the lower end of drive link 12.The lower end of prerotation vane 13 is connected with spring members, and described spring members comprises regulating spring 15 and support the adjustment seat 16 of regulating spring 15 that be provided with sealing ring 17 between the counter balance pocket inwall of adjustment seat 16 and valve body 1, the bottom of valve body 1 arranges bonnet 10; Particularly, the lower end of prerotation vane 13 is inserted in the described regulating spring 15, thereby prerotation vane 13 is subjected to the elastic force F of regulating spring 15.
Here it is pointed out that because drive link 12 is positioned at the center of described valve body 1 obviously the valve port of valve body 1 is eccentric arranges.
Here need to prove also that spool 14 can be fixedly arranged on the prerotation vane 13 by welding, also spool 14 and prerotation vane 13 can be set to one; In this specific embodiment, described spool 14 is specially taper valve core.
Be that stressed member carries out force analysis with described prerotation vane 13, prerotation vane 13 is except being subjected to the elastic force F that makes progress that above-mentioned regulating spring 15 applies, also be subjected to the downward thrust that drive link 12 transmits simultaneously, this thrust diaphragm 23 promotes driver blades 11 and forms, that is the power P that is subjected to of diaphragm 23
t-P
oWhen prerotation vane 13 is in poised state, F=P
t-P
oWhen the temperature of evaporator outlet end reduces, temperature, pressure P
tIncrease, move downward thereby promote prerotation vane 13, because spool 14 is fixedly arranged on the prerotation vane 13, so spool 14 also along with prerotation vane 13 moves downward, and then increases the flow of refrigerant; When the temperature of evaporator outlet end reduced, temperature, pressure reduced P
tThereby, promote prerotation vane 13 and move upward, drive spool 14 and move upward together, and then reduce the flow of refrigerant.
In this embodiment, owing to only be provided with a drive link 12 in the valve body 1 of heating power expansion valve, compare with the heating power expansion valve that two or more drive links 12 are set in the prior art, only there is balance leakage path outside the place, can control outer balance better and leak, improve the refrigerating capacity of heating power expansion valve.
Here it is to be noted, drive link 12 is arranged on valve body 1 center, obviously make valve port eccentricly to arrange, correspondingly, spool 14 relative prerotation vane 13 eccentric settings, but for the less product of valve port, the weight of spool 14 can be ignored with respect to prerotation vane 13, can't influence the balance of prerotation vane 13, can not cause prerotation vane 13 deflections and produce with valve body 1 and to interfere, influence the work of heating power expansion valve.
Further, can between prerotation vane 13 and regulating spring 15, supporting seat be set, particularly, the lower end clamping of the upper end of described supporting seat and described prerotation vane 13, the lower end of described supporting seat is plugged in the described regulating spring 15, can avoid the deflection prerotation vane 13 that causes and the interference that valve body 1 produces because of regulating spring 15, improve the start performance of heating power expansion valve.
Further, described prerotation vane 13 and described valve body 1 matched in clearance, because prerotation vane 13 and valve body 1 matched in clearance, heating power expansion valve in the course of the work, 1 pair of prerotation vane 13 of valve body has guide effect, can avoid in the course of work prerotation vane 13 to take place crooked and produce with valve body 1 interfering, can guarantee being sealed and matched of spool 14 and valve port, thereby guarantee the heating power expansion valve operate as normal.
Please refer to Fig. 7 and Fig. 8; Fig. 7 is the structural representation of the another kind of specific embodiment of heating power expansion valve that the utility model provides; Fig. 8 is the partial enlarged drawing at II position among Fig. 7.
In this specific embodiment, the spool 14 of heating power expansion valve is specially spherical valve core, and all the other basic structures are similar to above-mentioned first kind of specific embodiment.With respect to taper valve core, spool 14 is set to spherical valve core, can guarantee the sealing of valve port better.
Heating power expansion valve provided by the utility model, compared with prior art only be provided with a drive link, and described drive link is positioned at the center of thermal expansion valve body, simultaneously with the eccentric setting of valve port, because heating power expansion valve only is provided with a drive link, so balance leakage path outside the place is only arranged, with respect to the heating power expansion valve that two or more drive links are set in the prior art, heating power expansion valve provided by the utility model is more convenient for controlling outer balance and is leaked, and can guarantee the refrigerating capacity of heating power expansion valve.
More than heating power expansion valve provided by the utility model is described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. a heating power expansion valve comprises valve body, and described valve body has the counter balance pocket that is built-in with spring members; The upper end of described valve body is provided with gas tank, is provided with driver blade in the cavity of resorption of described gas tank, and described driver blade is connected with drive link; It is characterized in that the number of described drive link is one, and be positioned at the center of described valve body; The lower end of described drive link offsets with the prerotation vane that is arranged on the described spring members, is installed with the spool that cooperates with the valve port of described valve body on the described prerotation vane.
2. heating power expansion valve as claimed in claim 1 is characterized in that, also is provided with supporting seat between described prerotation vane and the described spring members.
3. heating power expansion valve as claimed in claim 2 is characterized in that, the upper end of described supporting seat and described prerotation vane clamping, and the lower end of described supporting seat is plugged in described spring members.
4. heating power expansion valve as claimed in claim 1 is characterized in that, described spool is taper valve core.
5. heating power expansion valve as claimed in claim 1 is characterized in that, described spool is spherical valve core.
6. as each described heating power expansion valve of claim 1 to 5, it is characterized in that described spool and described prerotation vane are wholely set.
7. as each described heating power expansion valve of claim 1 to 5, it is characterized in that described spool is by being fixedly welded on described prerotation vane.
8. as each described heating power expansion valve of claim 1 to 5, it is characterized in that described prerotation vane and described valve body matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201359192U CN203132230U (en) | 2013-03-22 | 2013-03-22 | Thermal expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201359192U CN203132230U (en) | 2013-03-22 | 2013-03-22 | Thermal expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203132230U true CN203132230U (en) | 2013-08-14 |
Family
ID=48940203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201359192U Expired - Fee Related CN203132230U (en) | 2013-03-22 | 2013-03-22 | Thermal expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203132230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734883A (en) * | 2019-03-25 | 2020-10-02 | 株式会社鹭宫制作所 | Temperature type expansion valve and refrigeration cycle system provided with same |
-
2013
- 2013-03-22 CN CN2013201359192U patent/CN203132230U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734883A (en) * | 2019-03-25 | 2020-10-02 | 株式会社鹭宫制作所 | Temperature type expansion valve and refrigeration cycle system provided with same |
| CN111734883B (en) * | 2019-03-25 | 2022-03-18 | 株式会社鹭宫制作所 | Temperature type expansion valve and refrigeration cycle system provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170124 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: Sanhua Refrigeration Group Co., Ltd., Zhejang Address before: 312500 Liquan village of Chengguan Zhejiang city of Shaoxing province Xinchang County town Patentee before: Zhejiang Sanhua Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20190322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |