CN102135354B - Thermostatic expansion valve - Google Patents
Thermostatic expansion valve Download PDFInfo
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- CN102135354B CN102135354B CN2011100050702A CN201110005070A CN102135354B CN 102135354 B CN102135354 B CN 102135354B CN 2011100050702 A CN2011100050702 A CN 2011100050702A CN 201110005070 A CN201110005070 A CN 201110005070A CN 102135354 B CN102135354 B CN 102135354B
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Abstract
The invention provides a thermostatic expansion valve which comprises a valve body, a valve needle seat, a first connecting pipe, a second connecting pipe, a valve opening part and a second divergent segment, wherein the valve body is provided with a hollow inner cavity; the valve needle seat is arranged in the inner cavity of the valve body, and a valve needle is arranged on the valve needle seat; the first connecting pipe is communicated with the inner cavity of the valve body; the second connecting pipe is communicated with the inner cavity of the valve body; a through valve opening is arranged on the valve opening part; the valve opening comprises a first divergent segment, and the valve needle penetrates through the valve opening; and a first end of the second divergent segment is communicated with the first divergent segment, and a second end of the second divergent segment is communicated with the second connecting pipe. According to the invention, a runner in the thermostatic expansion valve is optimized, the first divergent segment and the second divergent segment the circulation areas of which expand gradually are arranged in the flow direction of a fluid, the circulation areas after throttling change slowly and expand within a limited runner length of the fluid, thus the flow field changes uniformly in the throttling process of the thermostatic expansion valve, the sudden pressure reduction caused by abrupt change of circulation cross section is slowed down effectively, and the noise of the fluid in the flowing process is reduced.
Description
Technical field
The present invention relates to refrigeration technology field, more specifically, relate to a kind of heating power expansion valve.
Background technology
In the Refrigeration & Air-Conditioning technical field, general air-conditioner comprises compressor, condenser, evaporimeter, restricting element.The low temperature and low pressure steam of the cold-producing medium that comes out from evaporimeter is inhaled in the compressor, is compressed into the superheated steam of high pressure-temperature, gets into condenser then.Because the temperature of high pressure-temperature superheated refrigerant gas is higher than the temperature of its surrounding medium, and its pressure makes gaseous refrigerant can be condensed into liquid condition at normal temperatures, thereby when draining into condenser, through cooling, be condensed into the liquid refrigerant of high normal pressure and temperature.When the refrigerant liquid of high normal pressure and temperature passed through restricting element, because of the throttling step-down, when pressure reduced, liquid refrigerant made the also corresponding decline of temperature of itself because of the explosive evaporation heat absorption, thereby has become the two phase refrigerant of low-pressure low-temperature.Introduce evaporimeter heat absorption evaporation to the cold-producing medium of this low-pressure low-temperature, the temperature that can make air conditioner surroundings descends and reaches the purpose of refrigeration.The low-pressure low-temperature gaseous refrigerant that comes out from evaporimeter gets into compressor again, thereby accomplishes a kind of refrigeration cycle, repeats said process then.
Heating power expansion valve is a kind of throttling arrangement of controlling the evaporator outlet gaseous refrigerant degree of superheat through adjusting evaporimeter liquid supply rate; The critical piece of regulating cold medium flux is needle and valve opening, regulates the circulation area of heating power expansion valve by needle axially moving up and down in valve opening.Mostly the valve opening of existing heating power expansion valve is simple orifice-plate type structure, and the pressure drop of coolant throttle process is bigger, and the energy loss after the throttling is big, and the pressure jump in the flow field causes the refrigerant noise easily.Simultaneously; For heating power expansion valve outlet section runner, in present most of heating power expansion valve products, the changeover portion from the restriction portion of valve opening to outlet section all is a circulation area sudden expansion stage usually; This can produce bigger pressure jump equally, thereby causes generating noise.
Summary of the invention
The present invention aims to provide a kind of heating power expansion valve that can reduce the refrigerant pressure loss and reduce the refrigerant noise.
The invention provides a kind of heating power expansion valve, comprise valve body, valve body has the inner chamber of hollow; The needle seat is arranged in the inner chamber of valve body, and it is provided with needle; First takes over, with the intracavity inter-connection of valve body; Second takes over, with the intracavity inter-connection of valve body; Also comprise valve opening portion, it is provided with the valve opening of perforation, and valve opening comprises first divergent segment, and needle passes valve opening; Second divergent segment, its first end is connected with first divergent segment, and its second end and second is taken over and is connected.
Further, first divergent segment is arranged on the port of export of valve opening.
Further, heating power expansion valve also comprises the ladder outlet section, and its first end is connected with second divergent segment, and its second end is connected with second tube connector.
Further, the ladder outlet section comprises the terraced structure that the two-stage internal diameter enlarges step by step at least.
Further, valve opening also comprises first converging transition, is arranged on the arrival end of valve opening, and is connected with first divergent segment.
Further, first converging transition is connected with first divergent segment through the straight length on the valve opening.
Further, first takes over the lower end that is arranged on valve body, and welds mutually with valve body.
Further, second takes over a side that is arranged on valve body, and welds mutually with the sidewall of valve body.
Further, first divergent segment is taper, and the angular range of its cone angle A is 10 ° to 30 °.
Further, second divergent segment is taper, and the angular range of its cone angle B is 10 ° to 30 °.
Adopt heating power expansion valve of the present invention; Comprise that above-mentioned valve opening first divergent segment and first end are connected with first divergent segment, second end is taken over second divergent segment that is connected with second; The runner circulation area after the throttling that is arranged so that of the divergent segment in the runner enlarges gradually; The pressure jump that has slowed down the flow area sudden change and caused, thus reduced to flow through the refrigerant noise of heating power expansion valve effectively.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, 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 is the structural representation according to heating power expansion valve of the present invention;
Fig. 2 is first partial enlarged drawing according to the structural representation of heating power expansion valve of the present invention of Fig. 1;
Fig. 3 is second partial enlarged drawing according to the structural representation of heating power expansion valve of the present invention of Fig. 1; And
Fig. 4 is the structural representation according to the valve opening parts of heating power expansion valve of the present invention.
The specific embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
According to heating power expansion valve of the present invention, comprise valve body 10, valve body 10 has the inner chamber of hollow; Needle seat 80 is arranged in the inner chamber of valve body 10, and it is provided with needle 20; First takes over 40, with the intracavity inter-connection of valve body 10; Second takes over 50, with the intracavity inter-connection of valve body 10; Also comprise valve opening portion 30, it is provided with the valve opening of perforation, and valve opening comprises first divergent segment 31, and needle 20 passes valve opening; Second divergent segment 60, its first end is connected with first divergent segment 31, and its second end and second is taken over 50 and is connected.
As shown in Figure 1; Valve opening portion 30 is arranged in the inner chamber of valve body 10; The valve opening that has perforation in the valve opening portion 30; Needle 20 passes from valve opening, and the valve head 21 of needle 20 matches with valve opening and forms the minimum flow area of heating power expansion valve, and the aperture of the Position Control valve opening through changing valve head 21 is controlled the fluid flow that flows through heating power expansion valve.The present invention optimizes the inner flow passage of heating power expansion valve; The flow direction of longshore current body is provided with first divergent segment 31 and second divergent segment 32 that circulation area enlarges gradually; The gradual increase of circulation area after in the flow channel length of limited fluid, making throttling; Even flow field in the throttling process of heating power expansion valve is changed, effectively improved the situation of the fluid pressure sudden change that causes because of the sudden change of runner flow area, reduced the noise that fluid produces in flow process.
Preferably, as depicted in figs. 1 and 2 in the present embodiment, first divergent segment 31 is taper, and the angular range of its cone angle A is 10 ° to 30 °.As shown in figures 1 and 3, second divergent segment 60 is taper, and the angular range of its cone angle B is 10 ° to 30 °.
First divergent segment 31 and second divergent segment 60 are set to taper, process easily, can reduce the manufacturing cost of heating power expansion valve.When the size of the cone angle A of first divergent segment 31 at 10 ° between 30 ° the time; Can in the length of limited valve opening portion 30, make the circulation area of fluid slowly increase; Concrete angle is chosen, and then should specifically confirm according to the flow of the fluid that flows through heating power expansion valve and the specified step-down value of heating power expansion valve.The size of the cone angle B of second divergent segment 60 also is arranged between 10 ° to 30 °, and the noise that produces in the process fluid flow in this scope is minimum, and the concrete size of the angle of second divergent segment 60 is relevant with the length of the diameter of valve body 10 and second divergent segment 60.
As shown in Figure 1, heating power expansion valve also comprises ladder outlet section 70, and its first end is connected with second divergent segment 60, and its second end is connected with second tube connector 50.Ladder outlet section 70 comprises the terraced structure that the two-stage internal diameter enlarges step by step at least.
Be provided with the outlet section runner that ladder outlet section 70, the second divergent segments 60 and the stepped ladder outlet section 70 that enlarges step by step of flow area constitute heating power expansion valve together at the port of export of second divergent segment 60.Ladder outlet section 70 comprises the two-stage terraced structure at least; And the direction that terraced structure longshore current body flows enlarges step by step, and the number of the step that ladder outlet section 70 comprises is specifically confirmed according to the fluid flow of heating power expansion valve inside and the parameters such as force value of reduction.The combining structure form of second divergent segment 60 and ladder outlet section 70 has further been optimized the inner flow passage of heating power expansion valve, has reduced the noise that produces in the refrigerant flow process.
Preferably, first adapter 40 is arranged on the lower end of valve body 10, and welds mutually with valve body 10.Second adapter 50 is arranged on a side of valve body 10, and welds mutually with the sidewall of valve body 10.
Fluid flow direction shown in arrow among Fig. 1; The high pressure refrigerant is flowed into the valve body 10 of heating power expansion valves by first adapter 40; Through decompressional expansion behind the minimum flow area of valve head 21 and valve opening portion 30 formations; Low pressure refrigerant Continuous Flow after the throttling is crossed first divergent segment 31 of valve opening 30, second divergent segment 60 and the stepped outlet section 70 that is connected with first divergent segment 31; Take over 50 by second at last and flow out heating power expansion valve, wherein first take over bottom and the side that 40 and second adapter 50 is welded on valve body 1 respectively.
Preferably, valve opening also comprises first converging transition 32, is arranged on the arrival end of valve opening, and is connected with first divergent segment 31.First converging transition 32 is connected with first divergent segment 31 through the straight length on the valve opening.First divergent segment 31 is arranged on the port of export of valve opening.
Like Fig. 1, Fig. 2 and shown in Figure 4, the arrival end of the valve opening of longshore current body flow direction is provided with first converging transition, 32, the first converging transitions 32 and is connected with first divergent segment 31 of the port of export that is arranged on valve opening through straight length, constitutes the runner of valve opening jointly.Because the inner fluids of valve body 10 flow in the runner of valve opening from the inner heavy in section cavity of valve body 10 and behind the minimum flow area that constitutes through valve head 21 and valve opening, carry out the throttling step-down; When therefore from the cavity of heavy in section, flowing into valve opening; The sudden change of fluid flow area can cause the pressure loss to increase, and can increase the throttling noise indirectly.Therefore, conical first converging transition 32 that internal diameter reduces gradually is set, makes the pressure of fluid reduce gradually, reduce the noise that produces owing to pressure jump along first converging transition 32 at the valve opening arrival end of fluid flow direction.After fluid flows through first converging transition 32; Flow into first divergent segment 31 of valve opening through straight length; It is conical that first divergent segment 31 is, and the direction that its internal diameter longshore current body flows enlarges gradually, the intracavity inter-connection of the valve body 10 of final and valve opening portion 30 upper ends; Make the circulation area of runner of fluid become gradually greatly, thereby reduce noise.
From above description, can find out that the above embodiments of the present invention have realized following technique effect:
Heating power expansion valve of the present invention; Its inner flow passage is optimized; The flow direction of longshore current body is provided with the ladder outlet section that first divergent segment that circulation area enlarges gradually and second divergent segment and internal diameter enlarge step by step; The gradual increase of circulation area after in limited flow channel length, making throttling changes the even flow field in the throttling process of heating power expansion valve, and the situation of the fluid pressure sudden change that causes because of the sudden change of runner flow area is effectively improved; The pressure jump that has effectively slowed down the flow area sudden change and caused has reduced the noise that fluid produces in flow process.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. heating power expansion valve comprises:
Valve body (10), the inner chamber that said valve body (10) has hollow;
Needle seat (80) is arranged in the inner chamber of said valve body (10), and it is provided with needle (20);
First takes over (40), with the intracavity inter-connection of said valve body (10);
Second takes over (50), with the intracavity inter-connection of said valve body (10);
It is characterized in that, also comprise:
Valve opening portion (30), it is provided with the valve opening of perforation, and said valve opening comprises first divergent segment (31) of the port of export that is arranged on said valve opening, and said needle (20) passes said valve opening;
Second divergent segment (60), its first end is connected with said first divergent segment (31), and its second end and said second is taken over (50) and is connected;
Ladder outlet section (70), its first end is connected with said second divergent segment (60), and its second end is connected with said second tube connector (50);
First converging transition (32), it is the taper shape that internal diameter reduces gradually, is arranged on the arrival end of said valve opening, and is connected with said first divergent segment (31).
2. heating power expansion valve according to claim 1 is characterized in that, said ladder outlet section (70) comprises the terraced structure that the two-stage internal diameter enlarges step by step at least.
3. heating power expansion valve according to claim 1 is characterized in that, said first converging transition (32) is connected with said first divergent segment (31) through the straight length on the said valve opening.
4. according to each described heating power expansion valve in the claim 1 to 3, it is characterized in that said first takes over the lower end that (40) are arranged on said valve body (10), and welds mutually with said valve body (10).
5. heating power expansion valve according to claim 4 is characterized in that, said second takes over the side that (50) are arranged on said valve body (10), and welds mutually with the sidewall of said valve body (10).
6. according to each described heating power expansion valve in the claim 1 to 3, it is characterized in that said first divergent segment (31) is taper, the angular range of its cone angle A is 10 ° to 30 °.
7. according to each described heating power expansion valve in the claim 1 to 3, it is characterized in that said second divergent segment (60) is taper, the angular range of its cone angle B is 10 ° to 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100050702A CN102135354B (en) | 2011-01-11 | 2011-01-11 | Thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100050702A CN102135354B (en) | 2011-01-11 | 2011-01-11 | Thermostatic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102135354A CN102135354A (en) | 2011-07-27 |
| CN102135354B true CN102135354B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100050702A Active CN102135354B (en) | 2011-01-11 | 2011-01-11 | Thermostatic expansion valve |
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| CN (1) | CN102135354B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075566B (en) * | 2011-09-22 | 2018-01-19 | 株式会社不二工机 | Valve gear |
| JP5933210B2 (en) * | 2011-09-22 | 2016-06-08 | 株式会社不二工機 | Valve device |
| JP5891968B2 (en) * | 2012-06-22 | 2016-03-23 | 株式会社デンソー | Decompressor |
| CN107131688B (en) * | 2017-05-16 | 2023-03-17 | 长兴威威制冷科技有限公司 | Electronic expansion valve with multiple paths of equal distribution |
| CN112283974A (en) * | 2020-09-22 | 2021-01-29 | 武汉高芯科技有限公司 | Throttling refrigerator with precooling function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540173A (en) * | 2003-10-30 | 2004-10-27 | 浙江大学 | Quiet type throttling grooves in hydraulic component |
| CN2681052Y (en) * | 2003-12-12 | 2005-02-23 | 浙江三花集团有限公司 | Valve core of expansion valve |
| CN101566235A (en) * | 2009-05-21 | 2009-10-28 | 浙江盾安人工环境设备股份有限公司 | Valve core of thermostatic expansion valve and the thermostatic expansion valve |
| CN101900219A (en) * | 2009-05-26 | 2010-12-01 | 浙江三花股份有限公司 | Fluid valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5369259B2 (en) * | 2008-08-25 | 2013-12-18 | 株式会社テージーケー | Expansion valve |
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2011
- 2011-01-11 CN CN2011100050702A patent/CN102135354B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540173A (en) * | 2003-10-30 | 2004-10-27 | 浙江大学 | Quiet type throttling grooves in hydraulic component |
| CN2681052Y (en) * | 2003-12-12 | 2005-02-23 | 浙江三花集团有限公司 | Valve core of expansion valve |
| CN101566235A (en) * | 2009-05-21 | 2009-10-28 | 浙江盾安人工环境设备股份有限公司 | Valve core of thermostatic expansion valve and the thermostatic expansion valve |
| CN101900219A (en) * | 2009-05-26 | 2010-12-01 | 浙江三花股份有限公司 | Fluid valve |
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| CN102135354A (en) | 2011-07-27 |
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