CN102094977A - Thermostatic expansion valve - Google Patents
Thermostatic expansion valve Download PDFInfo
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- CN102094977A CN102094977A CN2009102586242A CN200910258624A CN102094977A CN 102094977 A CN102094977 A CN 102094977A CN 2009102586242 A CN2009102586242 A CN 2009102586242A CN 200910258624 A CN200910258624 A CN 200910258624A CN 102094977 A CN102094977 A CN 102094977A
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- expansion valve
- valve
- heating power
- power expansion
- displacement signal
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Abstract
The invention relates to a thermostatic expansion valve and belongs to the technical field of refrigeration control. The thermostatic expansion valve comprises a temperature sensing component (3), a transmission component (4) driven by the temperature sensing component (3), a valve body (1), and a valve port (16) formed on the valve body (1), and a valve plug (2) which moves relative to the valve port (16) to change the flow area at the valve port (16); the thermostatic expansion valve is characterized in that: a displacement signal amplification mechanism (5) is arranged between the transmission component (4) and the valve plug (2); and the displacement signal amplification mechanism (5) amplifies a displacement signal of the transmission component (4) and then transmits the amplified displacement signal to the valve plug (2). The thermostatic expansion valve reduces the deformation of a diaphragm, improves the regulation accuracy of a throttling device and the service life and work reliability under the condition that the requirement of external throttling is not changed.
Description
Technical field
The present invention relates to a kind of heating power expansion valve, is to come the device of control system amount of restriction by the circulation area size of adjusting the valve port place.Belong to refrigeration control technique field, be suitable for vapor compression heat pump systems etc., be particularly suitable for the heating power expansion valve that uses in the commercial big capacity refrigeration system.
Background technique
Heating power expansion valve as throttling arrangement is widely used in the loop of refrigeration system, temperature and pressure by perception special position refrigeration agent, control the size of refrigerant flow, along with the continuous popularization of commercial refrigerating device, the use of heating power expansion valve in the big capacity refrigeration system of commercialization is also very extensive.
As shown in Figure 1 be the heating power expansion valve of existing structure, this structure comprise offer throttling chamber 11 ' and balance chamber 12 ' valve body 1 ', throttling chamber 11 ' in be provided with spool 2 ', valve body 1 ' an end be fixed with as temperature sensing part 3 ' air tank head 200, air tank head 200 is by gas tank seat 201, driver blade 202, diaphragm 203, gas tank lid 204 is formed, be filled with temperature sensing medium in the Seal cage 205 between diaphragm 203 gentle case lids 204, when balance chamber 12 ' and Seal cage 205 in the temperature sensing medium variation in pressure time, this variation impels diaphragm 203 to promote the variation that driver blade 202 produces displacement, again with this variation by transmission part 4 ' move be delivered to spool 2 ', the size of the circulation area at control valve port place is to reach the refrigerant flow effect of adjusting by throttling passage.
But, because the work characteristics of commercial big capacity refrigeration system equipment, need the throttling arrangement of expansion valve to adapt to the environment that the throttling stroke is long, the working fluid fluctuation is frequent, and the throttling arrangement of the heating power expansion valve of said structure in the course of the work, the axial displacement of its spool equates with the axial deformation amount of diaphragm, in the environment that the throttling stroke is grown and the working fluid fluctuation is frequent, use, the aximal deformation value action that the meeting of critical component diaphragm is frequent, diaphragm is cracked, cause refrigeration system to occur leaking, influence the working life of valve.So the heating power expansion valve of prior art is used for the technical problem that operating life weak point, poor reliability can appear in commercial big capacity refrigeration system.And how improving the thermal expansion control valve unit, the work that allows to be adapted to commercial big capacity refrigeration system also is that those skilled in the art makes great efforts the problem of capturing always.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is a kind of new heating power expansion valve of design, externally throttling requires under the constant condition, reduce the working stroke of the diaphragm in the throttling arrangement, make to satisfy in the commercial big capacity refrigeration system and use, improve the working life and the functional reliability of heating power expansion valve.
For this reason, the present invention proposes a kind of heating power expansion valve, transmission part, the valve body that it comprises temperature sensing part, drive by temperature sensing part, be arranged on valve port on the described valve body, sliding with respect to described valve port changes the spool of valve port place circulation area, it is characterized in that, between described transmission part and described spool, also be provided with the displacement signal enlarger, pass to described spool after the displacement signal amplification of described displacement signal enlarger with transmission part.
Particularly, heating power expansion valve of the present invention, described displacement signal enlarger is a linkage mechanism;
Preferably, described linkage mechanism be arranged on the affixed fixed component of described valve body on;
Preferably, described linkage mechanism is that nonmetal plastic materials constitutes.
Particularly, heating power expansion valve of the present invention, described displacement signal enlarger is a leverage;
Preferably, described leverage is arranged on the fixed component that connects with described valve body, and described linkage mechanism comprises upper connecting rod and lower connecting rod.
Preferably, described leverage is that foil material constitutes.
Further, the axis of described transmission part is identical or parallel with the axis of described spool.
The heating power expansion valve that the present invention proposes, the displacement signal enlarger that between transmission part and spool, is provided with, pass to described spool after the displacement signal amplification with transmission part, amplified the displacement stroke of spool, externally throttling requires to have reduced the deformation quantity of diaphragm, and can increase the degree of regulation of throttling arrangement under the constant condition, the heating power expansion valve of this structure can be applicable to commercial big capacity refrigeration system, has improved working life and functional reliability.
Description of drawings
Fig. 1: the heating power expansion valve typical structure schematic representation of prior art.
Fig. 2: one of heating power expansion valve embodiment's who provides by inventive concept schematic representation;
Fig. 2 A: the heating power expansion valve among Fig. 2 is applied to the schematic representation of refrigeration system;
Fig. 3 A: the schematic representation of the displacement signal enlarger among Fig. 2;
Fig. 3 B: the displacement signal enlarger among Fig. 2 is installed in the schematic representation on the fixed component;
Fig. 4: the heating power expansion valve embodiment's who provides by inventive concept two schematic representation;
Fig. 5: the heating power expansion valve embodiment's who provides by inventive concept three schematic representation;
Fig. 6: the heating power expansion valve embodiment's who provides by inventive concept four schematic representation;
Fig. 7 A: the schematic representation of the displacement signal enlarger among Fig. 6;
Fig. 7 B: the displacement signal enlarger among Fig. 6 is installed in the schematic representation on the fixed component;
Fig. 8: the heating power expansion valve embodiment's who provides by inventive concept five schematic representation;
Symbol description among the figure:
1/1A/1B/1C/1 '-valve body, 2/2 '-spool;
3/3 '-temperature sensing part, 4/4 '-transmission part;
5/5A/5B/5C/5D-displacement signal enlarger;
51-upper connecting rod, 52-lower connecting rod;
53-pin-and-hole, 57-connecting pin, 54-projection;
55-bar sheet, 56-bar sheet opening end;
6-spool Regulation spring, 7-spring seat;
8-diaphragm Regulation spring, 9-spring seat;
The 10/10A/10B-fixed component;
11/11 '-throttling chamber, 12 '/12-balance chamber;
13-inlet channel, 14-outlet passage;
The 15-balance channel; The 16-valve port;
17/17A-receiving bore, 18-pin-and-hole;
The 19-link;
The 100-heating power expansion valve
200-air tank head, 201-gas tank seat;
202-driver blade, 203-diaphragm;
204-gas tank lid, 205-chamber;
301-compressor, 302-vaporizer;
303-condenser, 304 bulb, 305-capillary tube.
Embodiment
Fig. 2 is one of heating power expansion valve embodiment's of providing by inventive concept schematic representation; Fig. 2 A is applied to the schematic representation of refrigeration system for the heating power expansion valve among Fig. 2.
Shown in Fig. 2 and Fig. 2 A, expansion valve 100 mainly comprises the valve body 1 that offers throttling chamber 11 and balance chamber 12, is provided with spring seat 7 in throttling chamber 11, the valve port 16 that the spool Regulation spring 6 on the spring seat 7 supports spool 2 in throttling chamber 11.As the air tank head 200 of temperature sensing part 3, an airtight end that is installed in the balance chamber 12 of valve body 1, the balance channel 15 of valve body 1 is communicated with balance chamber 12, and the inlet channel 13 and the outlet passage 14 of the throttling chamber 11 of valve body 1 is separately positioned on the two ends of valve port 16.Air tank head 200 is made up of gas tank seat 201, driver blade 202, diaphragm 203, gas tank lid 204, Seal cage 205 between the diaphragm 203 gentle case lids 204 is communicated with bulb 304 by capillary tube 305, and bulb is installed in the outlet of vaporizer 302 and is filled with temperature sensing medium.Simultaneously, the outlet of vaporizer 302 is communicated with the balance channel 15 of the balance chamber 12 of heating power expansion valve 100.The corresponding saturation pressure of the outlet temperature of vaporizer 302 acts on air tank head diaphragm upside like this, evaporator outlet pressure acts on the diaphragm downside, the lower end of driver blade 202, butt has transmission part 4, the diaphragm Regulation spring 8 that is fixed on the spring seat 9 acts on the driver blade 202, the parallel axes of the axis of transmission part 4 and spool 2.
Fig. 3 A is the schematic representation of above-mentioned displacement signal enlarger; Fig. 3 B is that above-mentioned displacement signal enlarger is installed in the schematic representation on the fixed component.
Shown in Fig. 3 A and 3B, the displacement signal enlarger 5 of present embodiment is specially linkage mechanism, and upper connecting rod 51 is affixed with lower connecting rod 52, and has pin-and-hole 53, by connecting pin 57 linkage mechanism and fixed component 10 are linked together, linkage mechanism can rotate around connecting pin 57.As preferred version, the linkage mechanism of present embodiment adopts the integrative-structure of nonmetal plastic materials, can satisfy the needs of labyrinth, can certainly adopt form formation linkage mechanisms such as a plurality of metallic rod welding.Fixed component 10 is the cardinal principle cylindrical-shaped structure, have positioning convex 54 in perimembranous, be processed with receiving bore 17 in the underpart of valve body 1, have the groove (not looking out among the figure) that the positioning convex 54 with fixed component 10 is complementary on the receiving bore 17, fixed component 10 is packed in the receiving bore 17 of valve body 1 and sealing and fixing, and the groove of receiving bore 17 cooperates with the positioning convex 54 of fixed component 10 can prevent fixed component 10 rotations.
Again as shown in Figure 2, as the upper connecting rod 51 of the linkage mechanism of displacement signal enlarger 5 time with transmission part 4 butts, lower connecting rod 52 and spool 2 butts.
When the Pressure/Temperature of the outlet end of vaporizer 302 changes, working medium pressure in balance chamber 12 and the Seal cage 205 changes, impel diaphragm 203 to promote driver blade 202 and produce the displacement amount variation, this variation is by the mobile upper connecting rod 51 that is delivered to linkage mechanism of transmission part 4, triggering linkage mechanism rotates around connecting pin 57, lower connecting rod 52 obtains the displacement amount of an amplification, pass to spool 2, control the size of the circulation area at valve port place thus, reach the refrigerant flow effect of adjusting in the throttling passage.As seen, the displacement stroke that adopts linkage mechanism to amplify spool, externally throttling requires to have reduced the deformation quantity of diaphragm, and can increase the degree of regulation of throttling arrangement under the constant condition, improves working life and functional reliability.
Fig. 4 is the heating power expansion valve embodiment's that provides by inventive concept two schematic representation, what present embodiment was different with aforementioned schemes is, receiving bore 17A is arranged on the periphery of valve body 1A, the fixed component 10A valve body 1A that can pack into from the side is convenient to pack among the valve body 1A as the linkage mechanism integral body of displacement signal enlarger 5A like this.Other features of present embodiment and effect and effect and aforementioned schemes are basic identical, do not repeat them here.
Fig. 5 is the heating power expansion valve embodiment's that provides by inventive concept three schematic representation, what present embodiment was different with aforementioned schemes is, being processed with pin-and-hole 18 in the circumferential component of valve body 1B communicates with throttling chamber 11, as the linkage mechanism of displacement signal enlarger 5B from the throttling chamber 11 valve body 1B that packs into, connecting pin 57 inserts from the pin-and-hole 18 of valve body 1B, pass the pin-and-hole 53 in the linkage mechanism again, can directly linkage mechanism be fixed on the valve body 1B, linkage mechanism can rotate around connecting pin 57.Other features of present embodiment and effect and effect and aforementioned schemes are basic identical, do not repeat them here.
Fig. 6 is the heating power expansion valve embodiment's that provides by inventive concept four schematic representation, and Fig. 7 A is the schematic representation of above-mentioned displacement signal enlarger; Fig. 7 B is that above-mentioned displacement signal enlarger is installed in the schematic representation on the fixed component.
In the present embodiment, different with aforementioned schemes is, displacement signal enlarger 5C is specially leverage, and its lever is the bar sheet 55 that has pin-and-hole 53, by connecting pin 57 leverage and fixed component 10B are linked together, leverage can rotate around connecting pin 57.As preferred version, the lever of present embodiment can adopt the better also foil material structure (as stainless steel material) of lightweight of rigidity, at one end is bent into aperture as pin-and-hole 53, can certainly adopt other materials.Fixed component 10B is the cardinal principle round column structure, have positioning convex 54 in perimembranous, the underpart of valve body 1 is processed with receiving bore 17, have the groove (not looking out among the figure) that the positioning convex 54 with fixed component 10B is complementary on the receiving bore 17, fixed component 10B packs in the receiving bore 17 of valve body 1 and sealing and fixing, and the groove of receiving bore 17 cooperates with the positioning convex 54 of fixed component 10 can prevent fixed component 10B rotation.
In the time of the intermediate portion of the bar sheet 55 of leverage and transmission part 4 butts, the opening end 56 and spool 2 butts of bar sheet 55.
When the Pressure/Temperature of the outlet end of vaporizer 302 changes, working medium pressure in balance chamber 12 and the Seal cage 205 changes, impel diaphragm 203 to promote the variation that driver blade 202 produces displacement, again this variation is moved the intermediate portion of the bar sheet 55 that is delivered to lever by transmission part 4, triggering lever rotates around connecting pin 57, the displacement amount that the opening end 56 of bar sheet 55 obtains an amplification passes to spool 2, control the size of the circulation area at valve port place thus, reach the refrigerant flow effect of adjusting in the throttling passage.As seen, the displacement stroke that adopts leverage to amplify spool, externally throttling requires to have reduced the deformation quantity of diaphragm, and can increase the degree of regulation of throttling arrangement under the constant condition, improves working life and functional reliability.
Fig. 8 is the heating power expansion valve embodiment's that provides by inventive concept five schematic representation, in the present embodiment, different with aforementioned schemes is, the axis of transmission part 4 is identical with the axis of described spool 2, displacement signal enlarger 5D is specially linkage mechanism, between linkage mechanism and spool 2, also be provided with link 19, link 19 is fixed together with spool, after the displacement amount of transmission part 4 is delivered to displacement signal enlarger 5D, displacement signal enlarger 5D passes to spool 2 with the displacement amount of an amplification by link 19, controls the size of the circulation area at valve port place thus.Other features of present embodiment and effect and effect and aforementioned schemes are basic identical, do not repeat them here.
The above only is a preferred implementation of the present invention; 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 make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. heating power expansion valve, transmission part (4), the valve body (1) that comprises temperature sensing part (3), drives by described temperature sensing part (3), be arranged on valve port (16) on the described valve body (1), move with respect to described valve port (16) and change the spool (2) that valve port (16) is located circulation area, it is characterized in that, between described transmission part (4) and described spool (2), also be provided with displacement signal enlarger (5), pass to described spool (2) after the displacement signal amplification of described displacement signal enlarger (5) with described transmission part (4).
2. heating power expansion valve as claimed in claim 1 is characterized in that, described displacement signal enlarger (5) is a linkage mechanism.
3. heating power expansion valve as claimed in claim 2 is characterized in that, described linkage mechanism be arranged on the affixed fixed component (10) of described valve body (1) on.
4. heating power expansion valve as claimed in claim 2 is characterized in that described linkage mechanism comprises upper connecting rod and lower connecting rod.
5. heating power expansion valve as claimed in claim 1 is characterized in that, described displacement signal enlarger (5) is a leverage.
6. heating power expansion valve as claimed in claim 5 is characterized in that, described leverage be arranged on the affixed fixed component (10) of described valve body (1) on.
7. as each described heating power expansion valve of claim 1-6, it is characterized in that the axis of described transmission part (4) is identical or parallel with the axis of described spool (2).
8. as each described heating power expansion valve of claim 2-4, it is characterized in that described linkage mechanism is that nonmetal plastic materials constitutes.
9. as claim 4 or 5 described heating power expansion valves, it is characterized in that described leverage is that foil material constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102586242A CN102094977A (en) | 2009-12-11 | 2009-12-11 | Thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102586242A CN102094977A (en) | 2009-12-11 | 2009-12-11 | Thermostatic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102094977A true CN102094977A (en) | 2011-06-15 |
Family
ID=44128182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102586242A Pending CN102094977A (en) | 2009-12-11 | 2009-12-11 | Thermostatic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094977A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487154A (en) * | 2012-06-14 | 2014-01-01 | 浙江三花股份有限公司 | Thermal bulb of thermal expansion valve, filling method thereof and refrigerating system with same |
| WO2018188512A1 (en) * | 2017-04-13 | 2018-10-18 | 浙江三花汽车零部件有限公司 | Thermal expansion valve |
| CN115507520A (en) * | 2022-09-30 | 2022-12-23 | 珠海格力电器股份有限公司 | Valve body assembly, air conditioning system and control method of air conditioning system |
Citations (6)
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|---|---|---|---|---|
| US2753146A (en) * | 1952-10-07 | 1956-07-03 | Hamilton Thomas Corp | Valve with lever system having an adjustable fulcrum |
| US3361347A (en) * | 1964-12-23 | 1968-01-02 | Junkers And Co G M B H | Thermostatically controlled gas valve |
| US3810249A (en) * | 1971-03-05 | 1974-05-07 | United Gas Industries Ltd | Gas/electric control mechanism |
| DE19842233A1 (en) * | 1998-09-15 | 2000-04-06 | Kermi Gmbh | Angled thermostat for regulating heating valves has angled lever converting longitudinal thrust element displacement into linear action on control device mounted in front of control device |
| CN2758653Y (en) * | 2004-11-23 | 2006-02-15 | 郁国仁 | Temp. control valve for volume gas water heater |
| CN2791417Y (en) * | 2004-12-14 | 2006-06-28 | 浙江三花制冷集团有限公司 | Opening-regulation structure of thermoexpansion valve |
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2009
- 2009-12-11 CN CN2009102586242A patent/CN102094977A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2753146A (en) * | 1952-10-07 | 1956-07-03 | Hamilton Thomas Corp | Valve with lever system having an adjustable fulcrum |
| US3361347A (en) * | 1964-12-23 | 1968-01-02 | Junkers And Co G M B H | Thermostatically controlled gas valve |
| US3810249A (en) * | 1971-03-05 | 1974-05-07 | United Gas Industries Ltd | Gas/electric control mechanism |
| DE19842233A1 (en) * | 1998-09-15 | 2000-04-06 | Kermi Gmbh | Angled thermostat for regulating heating valves has angled lever converting longitudinal thrust element displacement into linear action on control device mounted in front of control device |
| CN2758653Y (en) * | 2004-11-23 | 2006-02-15 | 郁国仁 | Temp. control valve for volume gas water heater |
| CN2791417Y (en) * | 2004-12-14 | 2006-06-28 | 浙江三花制冷集团有限公司 | Opening-regulation structure of thermoexpansion valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487154A (en) * | 2012-06-14 | 2014-01-01 | 浙江三花股份有限公司 | Thermal bulb of thermal expansion valve, filling method thereof and refrigerating system with same |
| WO2018188512A1 (en) * | 2017-04-13 | 2018-10-18 | 浙江三花汽车零部件有限公司 | Thermal expansion valve |
| US11326816B2 (en) | 2017-04-13 | 2022-05-10 | Zhejiang Sanhua Automotive Components Co., Ltd. | Thermal expansion valve |
| CN115507520A (en) * | 2022-09-30 | 2022-12-23 | 珠海格力电器股份有限公司 | Valve body assembly, air conditioning system and control method of air conditioning system |
| CN115507520B (en) * | 2022-09-30 | 2024-06-28 | 珠海格力电器股份有限公司 | Valve body assembly, air conditioning system and control method of air conditioning system |
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Application publication date: 20110615 |