CN101566236A - Thermostatic expansion valve - Google Patents
Thermostatic expansion valve Download PDFInfo
- Publication number
- CN101566236A CN101566236A CNA200910143003XA CN200910143003A CN101566236A CN 101566236 A CN101566236 A CN 101566236A CN A200910143003X A CNA200910143003X A CN A200910143003XA CN 200910143003 A CN200910143003 A CN 200910143003A CN 101566236 A CN101566236 A CN 101566236A
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- expansion valve
- heating power
- power expansion
- spool
- communicated
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Abstract
The invention provides a thermostatic expansion valve, which includes a main throttling passage and an auxiliary throttling passage; the main throttling passage and the auxiliary throttling passage are respectively communicated with an outlet and a valve core of the thermostatic expansion valve in parallel; and an adjusting mechanism for sealing the valve core is arranged in the auxiliary throttling passage. The thermostatic expansion valve of the present invention overcomes the problems the air-conditioning system can not fast cool at the starting process and the temperature reducing speed is lower, and can reach the effects of fast cooling and fast reducing temperature.
Description
Technical field
The present invention relates to refrigerating field, in particular to a kind of heating power expansion valve.
Background technique
Heating power expansion valve is a kind of throttling arrangement that is used to regulate the vaporizer liquid supply rate with the gaseous refrigerant degree of superheat of control evaporator outlet, and its critical component that is used to regulate flow is a spool, and the heating power expansion valve of present domestic air conditioner mainly adopts tapered spool.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: existing heating power expansion valve, have only single throttling passage, air-conditioning system the start up period can not freeze rapidly, cooling rate is slower.
Summary of the invention
The present invention aims to provide a kind of heating power expansion valve, solving the tapered spool that existing heating power expansion valve adopts, air-conditioning system the start up period can not freeze rapidly, cooling rate waits problem more slowly.
In an embodiment of the present invention, provide a kind of heating power expansion valve, having comprised: main throttling passage and chromaffin body circulation road; Import and the outlet that is communicated with heating power expansion valve in parallel of main throttling passage and chromaffin body circulation road; Adjust structure, be arranged on the chromaffin body circulation road, be used to open or closed chromaffin body circulation road.
Preferably, heating power expansion valve comprises spool, and spool is a taper valve core.
Preferably, main throttling passage comprises: spool and the valve opening that is communicated with it.
Preferably, the chromaffin body circulation road comprises: spool; Adjust structure, be arranged in the valve body; Path is communicated with and adjusts structure and outlet.
Preferably, regulating device comprises: pilot hole is communicated with spool; The active catch plug, it has the structure of closed hole; Cavity is positioned at the bottom of valve body, communicates with pilot hole and holds the retaining plug; Path is communicated with cavity and outlet.
Preferably, the active catch plug comprises: plunger, and use and seal pilot hole; Elastic member is connected with plunger elasticity.
Preferably, elastic member is a spring.
Preferably, import is arranged on the side direction of spool.
Preferably, plunger and spool are integral structure or weld together.
Because heating power expansion valve of the present invention has two throttling passages of major-minor, under the air-conditioning start or the unexpected increase situation of loading, the chromaffin body circulation road is opened, and increases refrigerating capacity.So the present invention overcome air-conditioning system the start up period can not freeze the slow problem of cooling rate, and then reached fast-refrigerating, the effect of fast cooling rapidly.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structure according to heating power expansion valve of the present invention;
Fig. 2 has schematically shown the plotted curve of the degree of superheat of refrigeration agent with mass-flow change.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
As shown in Figure 1, in an embodiment of the present invention, provide a kind of heating power expansion valve, it comprises: main throttling passage and chromaffin body circulation road; The import 4 and outlet 5 that is communicated with heating power expansion valve in parallel respectively of main throttling passage and chromaffin body circulation road, heating power expansion valve comprises spool 2a, and it is positioned on the needle 2, and needle 2 is communicated with import 4; Adjust structure 6,2b, 8, be arranged on the chromaffin body circulation road, be used to open or closed chromaffin body circulation road.
Preferably, main throttling passage comprises: spool 2a and the valve opening 3 that is communicated with it.Like this, import 4, spool 2a and, valve opening 3 and export 5 and just can form main throttling passage, certainly, main throttling passage can also comprise miscellaneous part or through miscellaneous part.Spool 2a part vertically is contained in the valve opening 3, and can move vertically in valve opening 3.Valve opening 3 can be the inverted cone setting, and its lower end size is fit to match with spool 2a, helps accurately controlling the cold medium flux of main passage like this.
Preferably, the chromaffin body circulation road comprises: spool 2a; Adjust structure 6,2b, 8, be arranged in the valve body 1; Path 7 be communicated with to be adjusted structure 6,2b, 8 with outlet 5.Like this, spool 2a, adjust structure 6,2b, 8, path 7 and import 4 just can form with outlet 5 and be parallel to the logical chromaffin body circulation road of main throttling, certainly, the chromaffin body circulation road can also comprise miscellaneous part or process miscellaneous part.Under the air-conditioning start or the unexpected increase situation of loading, the chromaffin body circulation road is opened like this, increases refrigerating capacity.Adjust structure and can adopt various suitable forms.Preferably, regulating device 6,2b, 8, comprising: pilot hole 6,2a is communicated with spool; Active catch plug 2b, the structure that it has sealing pilot hole 6 can move axially along spool 2a, is used to open or seals pilot hole 6, and active catch plug 2b can be various suitable shapes certainly, and is for example block, column etc.; Cavity 8 is positioned at the bottom of valve body 1, communicates with pilot hole 6 and holds retaining plug 2b, and 2b provides activity space for the retaining plug; Path 7 is communicated with cavity 8 and outlet 5, for example, is arranged between cavity 8 and the outlet 5, and its shape can be circular hole or other suitable shape.
In the air-conditioning system insulation operation phase, the chromaffin body circulation road is adjusted structure 6,2b, and 8 closures have only main throttling passage to open, and change the valve opening circulation area by the spool axial motion and regulate cold medium flux, and refrigerant flows out from exporting 5 through the import 4 spool 2a that flows through.Under the air-conditioning start or the unexpected increase situation of loading, adjust structure 6,2b, 8 open, and another chromaffin body circulation road is opened, and increases refrigerating capacity.This project organization taken into account cooling fast and adjusting stablize two performances.
Preferably, spool 2a is a taper valve core.The characteristics of the spool of this structure are stable to the control of flow, and degree of superheat degree of regulation is higher.Like this, be convenient to control the flow of refrigerant in the main passage.
Preferably, active catch plug 2b comprises: plunger, be used to seal pilot hole 6, and plunger can move axially along spool 2a; Elastic member is connected with plunger elasticity.The size of plunger is suitable for sealing pilot hole 6, and therefore downward after pilot hole moves when plunger, refrigerant can enter into passage 7.
Preferably, elastic member is a spring, for example is holddown spring.Simple in structure like this, easy to implement.Certainly, elastic member also can be other elastic component.
Preferably, import 4 is arranged on the side direction of spool 2a.Help the reasonable distribution of main throttling passage and chromaffin body circulation road like this.Certainly, import 4 also can be provided with along other direction.
Preferably, plunger and spool 2a are integral structure.Compact structure is firmly not fragile like this.Certainly, spool and plunger can weld together, and also can be that branch is arranged, and for example, are screwed onto together.
Fig. 2 has schematically shown the plotted curve of the degree of superheat of refrigeration agent with mass-flow change.As shown in the figure, y coordinate is the refrigerant mass flow rate, abscissa is the degree of superheat, the static degree of superheat is 5 ℃, the corresponding degree of superheat is that 7.5 ℃ point is a point of inflexion on a curve on the rating curve, and the main throttling passage of heating power expansion valve inside and chromaffin body circulation road are opened simultaneously and carried out throttling when arriving this degree of superheat.
From above description, as can be seen, the above embodiments of the present invention have realized following technique effect: the present invention taken into account cooling fast and adjusting stablize two performances, so overcome air-conditioning system the start up period can not freeze rapidly, the slow problem of cooling rate, and then fast-refrigerating, the effect of fast cooling have been reached.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a heating power expansion valve is characterized in that, comprising:
Main throttling passage and chromaffin body circulation road;
The import (4) that is communicated with described heating power expansion valve in parallel of described main throttling passage and described chromaffin body circulation road, and the outlet (5) that is communicated with described heating power expansion valve in parallel;
Adjust structure (6,2b, 8), be arranged on the described chromaffin body circulation road, be used to open or closed described chromaffin body circulation road.
2. heating power expansion valve according to claim 1 is characterized in that,
Described heating power expansion valve comprises spool (2a), and described spool (2a) is a taper valve core.
3. heating power expansion valve according to claim 1 is characterized in that, described main throttling passage comprises:
Described spool (2a) and the valve opening (3) that is communicated with it.
4. heating power expansion valve according to claim 1 is characterized in that, described chromaffin body circulation road comprises:
Described spool (2a);
Described adjustment structure (6,2b, 8) is arranged in the valve body (1);
Path (7) is communicated with described adjustment structure (6,2b, 8) and described outlet (5).
5. heating power expansion valve according to claim 4 is characterized in that, described regulating device (6,2b, 8) comprising:
Pilot hole (6), (2a) is communicated with described spool;
Active catch plug (2b), it has the structure in the described hole of sealing (6);
Cavity (8) is positioned at the bottom of valve body (1), communicates with described hole (6) and holds described retaining plug (2b);
Path (7) is communicated with described cavity (8) and described outlet (5).
6. heating power expansion valve according to claim 1 is characterized in that, described active catch plug (2b) comprising:
Plunger is used and is sealed described hole (6);
Elastic member is connected with described plunger elasticity.
7. heating power expansion valve according to claim 6 is characterized in that,
Described elastic member is a spring.
8. heating power expansion valve according to claim 1 is characterized in that,
Described import (4) is arranged on the side direction of described spool (2a).
9. heating power expansion valve according to claim 6 is characterized in that,
Described plunger and described spool (2a) are integral structure.
10. heating power expansion valve according to claim 6 is characterized in that,
Described plunger and described spool (2a) weld together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910143003XA CN101566236B (en) | 2009-05-21 | 2009-05-21 | thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910143003XA CN101566236B (en) | 2009-05-21 | 2009-05-21 | thermostatic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566236A true CN101566236A (en) | 2009-10-28 |
| CN101566236B CN101566236B (en) | 2011-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910143003XA Active CN101566236B (en) | 2009-05-21 | 2009-05-21 | thermostatic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101566236B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799089A (en) * | 2010-03-31 | 2010-08-11 | 浙江盾安人工环境设备股份有限公司 | Thermostatic expansion valve with valve seal closing function |
| CN105889590A (en) * | 2016-05-26 | 2016-08-24 | 上海恒温控制器厂有限公司 | Double valve port flow regulating mechanism in expansion valve and expansion valve |
-
2009
- 2009-05-21 CN CN200910143003XA patent/CN101566236B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799089A (en) * | 2010-03-31 | 2010-08-11 | 浙江盾安人工环境设备股份有限公司 | Thermostatic expansion valve with valve seal closing function |
| CN105889590A (en) * | 2016-05-26 | 2016-08-24 | 上海恒温控制器厂有限公司 | Double valve port flow regulating mechanism in expansion valve and expansion valve |
| CN105889590B (en) * | 2016-05-26 | 2017-12-22 | 上海恒温控制器厂有限公司 | Bivalve mouth flow control device and expansion valve in expansion valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101566236B (en) | 2011-11-23 |
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Address after: 311835 Zhuji Diankou Industrial Zone, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Dunan Artificial Environment Co., Ltd. Address before: 311835 Zhuji Diankou Industrial Zone, Shaoxing City, Zhejiang Province Patentee before: Zhejiang Dun'an Artificial Environment Equipment Co., Ltd. |