CN101832421A - Thermostatic expansion valve - Google Patents
Thermostatic expansion valve Download PDFInfo
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- CN101832421A CN101832421A CN 200910079861 CN200910079861A CN101832421A CN 101832421 A CN101832421 A CN 101832421A CN 200910079861 CN200910079861 CN 200910079861 CN 200910079861 A CN200910079861 A CN 200910079861A CN 101832421 A CN101832421 A CN 101832421A
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- heating power
- high pressure
- spool
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Abstract
The invention discloses a thermostatic expansion valve, which comprises a valve body, a valve hole, a valve chamber, a temperature-sensed driving part, a valve spool, a compression helical spring and an adjusting screw, wherein the valve body is provided with a flow-in passage and a flow-out passage; the valve hole connects a low-pressure passage of the flow-out passage communicated with an evaporator with a high-pressure passage of the flow-in passage communicated with a condenser; the valve chamber and the temperature-sensed driving part are respectively arranged on the lower part and upper part of the valve body; the valve spool controls the flow of a refrigerant flowing to the evaporator according to the temperature and pressure sensed by the temperature-sensed driving part; the compression helical spring is arranged in the valve chamber and is used for driving the valve spool to the valve closing direction; and the adjusting screw adjusts the driving force of the compression helical spring, wherein the adjusting screw consists of a disk part and a cylinder part uprightly arranged on the disk part; the disk part is closed to form the valve chamber; meanwhile, the cylinder part extends into the high-pressure passage so as to accurately reduce bubbles flowing into the valve chamber and reduce noise.
Description
Technical field
The present invention relates to a kind of heating power expansion valve, particularly relate to a kind of heating power expansion valve that is applicable to automotive air-conditioning system.
Background technique
The type of heating power expansion valve is various, and one of them for example connects the block heating power expansion valve that vaporizer is imported and exported.This heating power expansion valve together constitutes refrigeration cycle by pipeline and compressor, condenser, vaporizer.
The heating power expansion valve that constitutes this refrigeration cycle is a kind of known expansion valve, promptly the path that passes through at the high pressure refrigerant that supplies to described condenser is provided with valve opening midway, and be provided with spool (for example spherical spool) with the high pressure side subtend configuration of this valve opening, change from the temperature and pressure that described vaporizer flows to described compressor according to low pressure refrigerant, and make spool leave valve opening.
As for the formation summary of existing heating power expansion valve, ask for an interview central longitudinal sectional view as shown in Figure 5.
The aluminum valve body 7 of the bulk of heating power expansion valve 1 among Fig. 5 (being the corner post shape) is by refrigerant is supplied to constituting as first path 4 that flows into path with the alternate path 6 as outflow pathway that the refrigerant that vaporizer 3 outlet 3b discharge supplies to compressor 5 of vaporizer 3 import 3a from condenser 2a by cistern 2b.First path 4 and alternate path 6 spaces are arranged on the bottom and the top of valve body 7.
The heat insulation expansion of liquid coolant that valve opening 8 is supplied with cistern 2b, and valve opening 8 has along valve body 7 axial central axis.The on high-tension side import of valve opening 8 is formed with valve opening face 8a, and the spherical spool 9 on its valve opening face 8a drives by the pretension parts that compression helical spring 10 is constituted.Low voltage side path 4a relatively high pressure side path 4b horizontal being arranged on the valve body 7 that misplace.The outlet passage 4a1 opening of low voltage side path 4a relative with the end face 21b of the valve body 7 of the inlet passage 4b1 opening of high pressure side path 4b to end face 21a on, connect the import 3a of vaporizer 3 on the open end of outlet passage 4a1.
Supply the high pressure side path 4b of the liquid coolant importing of cistern 2b to have described inlet passage 4b1 and the valve chamber 11 that is connected with its inlet passage 4b1, this valve chamber 11 is arranged on the bottom of described valve body 7, and form coaxial space, and by adjusting screw 12 obturations with the center line of valve opening 8.
Described obturation is that being meshed with the internal thread that is formed on described valve body 7 lower ends by described adjusting screw 12 makes described valve chamber 11 obturations.This thread engagement is represented with symbol 12b.
Therefore, form described valve chamber 11 between the high pressure side path 4b of the liquid coolant importing of confession cistern 2b and the low voltage side path 4a.Valve chamber 11 links to each other with inlet passage 4b1, and described valve opening 8 is formed at the top of valve chamber 11.Thereby high pressure side path 4b and low voltage side path 4a are communicated with by valve opening 8 and valve chamber 11.
Compression helical spring 10 in the valve chamber 11 is arranged between the valve core frame 13 and described adjusting screw 12 that supports described spherical spool 9, and described spherical spool 9 utilizes compression helical spring 10 and moves by the valve core frame 13 that supports described spool 9.
12a is that the sealing that is arranged between described adjusting screw 12 and the valve body 7 is enclosed with O shape, and 12c is the tool insert hole that makes the turn about in the of 12 of described adjusting screw.
By regulating the aperture of valve opening 8, control flows to the cold medium flux of the low voltage side path 4a that leads to vaporizer 3 from the inlet passage 4b1 of high pressure side path 4b.
Therefore, make the refrigerant heat insulation expansion of high pressure side path 4b to low voltage side path 4a by spherical spool 9 and valve opening 8, its refrigerant supplies to the import 3a of vaporizer 3 from the outlet passage 4a1 of low voltage side path 4a then.
By described heating power expansion valve as can be known, the highly pressurised liquid refrigerant that is imported in the inlet passage 4b1 of high pressure side path 4b is a gas-liquid attitude refrigerant, the refrigerant that includes gaseous state from described inlet passage 4b1 flow through described first path 4 high pressure side path 4b, described valve chamber 11, valve opening 8 and when flowing in the described low voltage side path 4a, have the refrigerant sound that flows to produce.
Sound is as noise and to the exterior conductive of described heating power expansion valve 1, so caused the undesired of described heating power expansion valve 1 because described refrigerant flows.
Therefore, prior art is in order to reduce the described refrigerant sound that flows, and a kind of scheme that bubble in the liquid refrigerants is reduced is provided.For example, with in the inlet passage 4b1 of described valve body 7 and the high pressure side path 4b that described valve chamber 11 is connected, setting has the throttle part of throttle orifice, reduces the noise (with reference to Patent Document 1) that causes because of the explosion that invades the described bubble in the described valve chamber 11 by this throttle part.
Moreover as the structure that described bubble is reduced, prior art also provides a kind of scheme.For example, connect to be pressed into to encircle on the path with plug connector by pipeline and restriction is set or passes through the restriction (with reference to Patent Document 2) that cutting forms one at first path 4 of described heating power expansion valve 1.
In addition, the high pressure refrigerant of described high pressure side path 4b of flowing through produces pressure oscillation, when this pressure oscillation is conducted to described spool 9, because the instability of described spool 9 actions, therefore, described spool 9 forms vibration, and then produces noise because of the vibration of this spool 9, so it is undesired that described heating power expansion valve 1 has occurred.
For the noise that the vibration that reduces because of spool causes, prior art provides a kind of scheme, and for example, device has and can suppress described spool 9 action unsettled vibration-proof springs (with reference to Patent Document 3 and Patent Document 4) on described spool 9.
But existing heating power expansion valve is for the bubble in the gas-liquid attitude that reduces the high pressure refrigerant, owing to must on valve body or pipeline connect with plug connector, append in addition a throttle part is set, therefore, increase the number of component, so existence can't realize problem cheaply.
In addition, existing heating power expansion valve does not consider that need not append new parts on the described vibration-proof spring on the described valve body is support device, with regard to the comparable purpose that is easier to and does not increase the realization support of cost again.
[Patent Document 1] spy opens flat 8-145506 communique
[Patent Document 2] spy opens flat 8-159616 communique
Clear 48-9685 communique is announced in [Patent Document 3] utility model application
[Patent Document 4] spy opens the 2005-156046 communique
Summary of the invention
The present invention is in view of above problem points, not only can save in order to reduce bubble in the gas-liquid refrigerant and prerequisite throttle part, nor can increase under the prerequisite of component number, provide a kind of to reduce the heating power expansion valve cheaply that noise is a purpose.
In addition, the purpose of a kind of heating power expansion valve provided by the present invention is when described bubble is reduced, also need not append the new parts that are used to support the device that can suppress described spool vibration.
In order to solve above-mentioned problem, the present invention adopts following technological means.
A kind of heating power expansion valve comprises:
Valve body, this valve body have refrigerant and flow to inflow path and the refrigerant that vaporizer flows through from condenser side and flow to the outflow pathway that compressor side is flowed through from described vaporizer;
And the valve opening that is connected of the high pressure side path of the described inflow path that is connected of the low voltage side path of the described outflow pathway that will be connected with described vaporizer and described condenser side;
And be arranged on described valve body lower portion and flow into the valve chamber of described refrigerant by described high pressure side path;
And be arranged on described valve body top and be used for perception from the temperature of the described refrigerant of described vaporizer outflow and the temperature-sensitive drive portion of pressure;
And flowing to the spool of the described cold medium flux of described vaporizer according to the described temperature that perceives and pressure control, this spool is arranged on the high pressure side of described valve opening;
And be arranged on being used for described spool in the space that forms described valve chamber to closing compression helical spring that the valve direction orders about and the adjusting screw of regulating described compression helical spring urging force;
Wherein, described adjusting screw is made up of the cylindrical part that round plate and setting are arranged on this round plate, the inaccessible space that forms described valve chamber of described round plate, and simultaneously, described cylindrical part contacts with the inner face of described valve chamber, and extends in the path of described high pressure side.
A kind of preferred embodiment in, described cylindrical part exceeds the position of center line of described high pressure side path and extends.
A kind of preferred embodiment in, described cylindrical part and described round plate form as one.
A kind of preferred embodiment in, described cylindrical part forms the supporting part of the vibration-proof spring of supported configurations on described spool.
By described heating power expansion valve as can be known, reduce by the bubble that is arranged on the adjusting screw in the described valve chamber, makes in the refrigerant of flowing through the high pressure side path and in described valve chamber, flowing into.Owing to the bubble that flows into valve chamber is reduced by adjusting screw, therefore, do not need to append new parts, thereby, can realize a kind of heating power expansion valve that cost can prevent to produce because of the bubble explosion noise that do not increase.
Heating power expansion valve of the present invention, because by being arranged on the adjusting screw in the described valve chamber, bubble in the refrigerant of flowing through the high pressure side path and flowing in described valve chamber is reduced, therefore, not only do not need to append new parts, and, do not need special change to make the structure of the existing heating power expansion valve of described bubble minimizing yet, so, have the advantage that reduces the noise that produces because of the bubble explosion.
In addition, heating power expansion valve of the present invention because the cylindrical part that forms on the described adjusting screw, can surmount the axial central axis position of described high pressure side path and extends, and therefore, the indoor described bubble of flow valves that makes that can be definite reduces.
And, surmount the degree that extend described central axis position owing to can suitably selecting described cylindrical part, so, the indoor described bubble of flow valves is reduced.
As mentioned above, heating power expansion valve of the present invention, can realize with comparalive ease a kind of can the definite scheme that reduces noise with simple structure.
Moreover, because the cylindrical part of the described adjusting screw of heating power expansion valve of the present invention and the round plate of described adjusting screw form as one, therefore, can further reduce cost.
In addition, heating power expansion valve of the present invention, owing to have described cylindrical part, therefore, this cylindrical part can be used as the supporting part that is supported on the vibration-proof spring on the spool and is provided with.Thereby, can prevent the instability of the spool action that causes because of the pressure oscillation of the high pressure refrigerant of the described high pressure side path of flowing through etc.Therefore, when bubble in the indoor high pressure refrigerant of flow valves is reduced, also can suppress the instability of described spool action, thereby, the noise that the instability because of the explosion of described bubble and the action of described spool causes can be reduced.
Description of drawings
Fig. 1 wants portion's sectional view for the 1st mode of execution of heating power expansion valve of the present invention.
Fig. 2 is the adjusting screw of Fig. 1 heating power expansion valve and the tectonic maps of compression helical spring.
Fig. 3 wants portion's sectional view for the 2nd mode of execution of heating power expansion valve of the present invention.
Fig. 4 is the adjusting screw of Fig. 3 heating power expansion valve and the tectonic maps of compression helical spring and vibration-proof spring.
Fig. 5 is the central longitudinal sectional view of the structure of existing heating power expansion valve.
Embodiment
Following the 1st mode of execution that describes heating power expansion valve of the present invention with reference to Fig. 1, Fig. 2.
Fig. 1 be heating power expansion valve the 1st mode of execution want portion's sectional view.Fig. 2 is the adjusting screw of same expansion valve and the tectonic maps of compression helical spring.In addition, Fig. 1 represents with prosign with the part identical with existing heating power expansion valve shown in Figure 4.
The heating power expansion valve of representing with symbol 20 in the 1st mode of execution of the present invention, the structure of itself and existing heating power expansion valve 1 shown in Figure 5 is basic identical.Therefore, the part that the 1st mode of execution is identical with Fig. 5 is represented with prosign, saves detailed description.The invention is characterized in that owing to have adjusting screw 22 and compression helical spring 10, therefore, the portion that wants as heating power expansion valve 20 describes these major components.
The heating power expansion valve 20 of the 1st mode of execution shown in Figure 1, drive described drive link 15g by described temperature-sensitive drive portion, and described temperature-sensitive drive portion is the low pressure refrigerant temperature and pressure of sending along with described vaporizer 3 and moving, and described spherical spool 9 controls flow into the cold medium flux in the described vaporizer 3.As shown in Figure 2, described adjusting screw 22 is metallic material system or stainless steel material system or resin system, constitutes to the cylindrical part 22b that described spherical spool 9 directions vertically are provided with by round plate 22a with from this round plate 22a.And described round plate 22a and described cylindrical part 22b form as one.
Moreover described spherical spool 9 contacts with described valve core frame 13, and is supported by described valve core frame 13.Described valve core frame 13 is supported by an end of described compression helical spring 10, and the other end of described compression helical spring 10 is supported by described round plate 22a.Therefore, described compression helical spring 10 is configured in the described cylindrical part 22b along the inner face of described cylindrical part 22b, forms the structure that is arranged between described valve core frame 13 and the described adjusting screw 22.
Therefore, as shown in Figure 1, described adjusting screw 22 is inserted from the inner face of underpart 7a in the space that forms described valve chamber 11 of described valve body 7.
The internal thread part 7b of described valve body 7 and the external thread part 22c of described adjusting screw 22 are screwed in the inner face 11a of described valve chamber 11, and are used for inaccessible described valve chamber 11.At this moment, the described cylindrical part 22b of described adjusting screw 22 along the extending axially of described valve body 7, is the structure of giving prominence in the path 4b of the high pressure side of described valve body 7 in the path 4b of the high pressure side of described valve body 7.In addition, symbol 22d encloses with O shape for preventing coolant leakage, and this O shape circle seals the gap of described cylindrical part 22b and described valve chamber 11.
Moreover described adjusting screw 22 is formed with the hole 22e that inserts for the instrument (for example, screw-driver or spanner) that drives described adjusting screw 22 in the bottom of described round plate 22a.
And, driving to closing the valve direction in order to make described spool 9, described adjusting screw 22 has the function of regulating described compression helical spring 10 loadings.Promptly, by described instrument, the feasible described external thread part 22c that is screwed with described internal thread part 7b moves up and down, by make described external thread part 22c upward (9 directions of spool described in Fig. 1) move, the described cylindrical part 22b of described adjusting screw 22 surmounts the axial central shaft 4b2 of high pressure side path 4b as shown in Figure 1 and extends, and described adjusting screw 22 extensions are arranged in the described high pressure side path 4b of described valve chamber 11.In addition, the configuration status of described adjusting screw 22 as shown in Figure 2, the described adjusting screw 22 of this structure, by at described compression helical spring 10 with described spool 9 to the action of closing on the compression direction that the valve direction orders about, and regulate the loading of described compression helical spring 10.
Utilize the heating power expansion valve 20 of above structure, the high pressure refrigerant of the high pressure side path 4b that flows through that imports from the described inlet passage 4b1 of described cistern 2b becomes the low-temp low-pressure refrigerant after by described valve opening 8, this low-temp low-pressure refrigerant is flowed through and is flowed out from described outlet passage 4a1 behind the described low voltage side path 4a, and then flows in the described vaporizer 3 by described import 3a.
Refrigerant after 3 evaporations of described vaporizer is sent by outlet 3b, flows through described alternate path 6 then and flows to described compressor 5.Moreover the part refrigerant of the described alternate path 6 of flowing through flow in all pressures chamber 19 of described temperature-sensitive drive portion 17, refrigerant temperature and the pressure that perception imported by described temperature-sensitive drive portion 17 then, i.e. the perception degree of superheat.In addition, in the described temperature-sensitive drive portion 17, when freezing load is excessive, described refrigerant temperature uprises pressure and diminishes, when the pressure of the described diaphragm chamber 18 of described temperature-sensitive drive portion 17 becomes big, described diaphragm 16 is (described spool 9 directions among the figure) displacement downwards, and this displacement is ordered about described spool 9 by described drive link 15 to valve opening position, thereby the cold medium flux that imports in the described vaporizer 3 increases.In addition, otherwise when described freezing load was too small, it is big that the refrigerant temperature step-down pressure of the described alternate path 6 of flowing through becomes, thereby the cold medium flux that imports in the described vaporizer 3 by described temperature-sensitive drive portion 17 reduces.
The heating power expansion valve 20 of control cold medium flux, owing in described high pressure side path 4b, extend and be provided with described adjusting screw 22, so, on described high pressure side path 4b, be formed with the passage portion 4b3 of refrigerant by usefulness by the cylindrical part 22b of this described adjusting screw 22.Therefore, when the high pressure refrigerant of the described high pressure side path 4b that flows through during by described passage portion 4b3, described cylindrical part 22b can stop passing through of bubble.Thereby described refrigerant can be reduced by the mobile sound of described valve opening 8, and then, can reduce the noise that produces because of the bubble explosion.
By the 1st mode of execution as can be known, it does not need existing heating power expansion valve is carried out design alteration, can realize reducing noise and not influence the described heating power expansion valve 20 that cold medium flux is controlled.And, in the described heating power expansion valve 20,, therefore, can reduce the cost of heating power expansion valve again because described round plate 22a and described cylindrical part 22b form as one.
Moreover, heating power expansion valve 20 in the 1st mode of execution, by in described high pressure side path 4b, extending described adjusting screw 20 is set, since can be suitable select to adjust the position that its cylindrical part 22b protrudes in the described central shaft 4b2 of described high pressure side path 4b, so the described passage portion 4b3 of described high pressure side path 4b forms latus rectum.Described passage portion 4b3 for example forms the latus rectum of 4mm size.By its restriction, the bubble in the refrigerant of flowing through described high pressure side path 4b and flowing in described valve chamber 11 is reduced.Therefore, also can further reduce the to flow through coolant noise of described valve chamber 9 and described valve opening 8.
As mentioned above, heating power expansion valve 20 of the present invention is easier to realize get final product the definite scheme that reduces noise with simple structure for a kind of ratio.
Fig. 3 is the central cross sectional view of wanting cage structure of of the present invention heating power expansion valve relevant with the 2nd mode of execution.Fig. 4 is the tectonic maps of adjusting screw, compression helical spring and vibration-proof spring shown in Figure 3.In addition, the part that Fig. 3 is identical with constituting component shown in Figure 2 adopts prosign to represent, saves detailed description.
The adjusting screw 23 relevant with the 2nd mode of execution compared with the adjusting screw 22 in the 1st mode of execution, as shown in Figure 3, cylindrical part 23b supports vibration-proof spring 24, therefore, from the effect that constitutes, supporting existence difference on described vibration-proof spring 24 this point as supporting part.
In addition, the heating power expansion valve 21 of the 2nd mode of execution shown in Figure 3, by with the identical action may command cold medium flux of heating power expansion valve 20 in the 1st mode of execution, therefore, save explanation to described heating power expansion valve 21 actions.The feature of present embodiment, owing to have adjusting screw 23 and compression helical spring 10 and vibration-proof spring 24, so the want portion of these major components as heating power expansion valve 21 described with reference to Fig. 4.That is, as shown in Figure 4, described vibration-proof spring 24 is identical with existing Patent Document 3 and Patent Document 4, is had the plectane 24a of hole 24b and is radial and forms with the 24c of planar foot that this plectane 24a forms as one by central authorities.And the columnar portion 13a of valve core frame 13 is stated in insertion to some extent in the described central hole 24b of described plectane 24a, and described plectane 24a is clipped in and is fixed between the end of the round plate 13b of described valve core frame 13 and described compression helical spring 10.In addition, the described columnar portion 13a of described valve core frame 13 and described round plate 13b are connected as one, and described round plate 13b is arranged on the described valve core frame 13 and reverse side described spool 9 contacted surface of contact.Therefore, when device has described spool 9 on the described vibration-proof spring 24, the tip portion 24d of the described 24c of foot contacts with the large-diameter portion 23b2 of described adjusting screw 23 and is provided with, thereby described adjusting screw 23 forms the supporting part that supports described vibration-proof spring 24.The minor diameter part 23b1 of described compression helical spring 10 the other ends of the support of the described cylindrical part 23b of described adjusting screw 23 with form as one with the contacted large-diameter portion 23b2 of the described 24c of foot of described vibration-proof spring 24 as the supporting part of described vibration-proof spring 24.
By the 2nd mode of execution as can be known, when the high pressure refrigerant generation pressure oscillation of the described high pressure side path 4b of the described heating power expansion valve 21 of flowing through, can suppress described spool 9 by described vibration-proof spring 24 and produce vibration.
By the 2nd mode of execution as can be known, described adjusting screw 23 by heating power expansion valve 21 of the present invention, described cylindrical part 23b can reduce the bubble in the described high pressure refrigerant that flows in described valve chamber, simultaneously, described cylindrical part 23b can suppress the vibration of described spool 9 as the supporting part of described vibration-proof spring 24 and do the time spent.Thereby the heating power expansion valve 21 in the 2nd mode of execution can reduce the noise that causes because of the bubble in the high pressure refrigerant of the high pressure side path 4b that flows through and described spool 9 actions that cause because of the pressure oscillation of high pressure refrigerant are unstable and the noise that finally causes.
And the 2nd mode of execution has the structure of the existing heating power expansion valve of described vibration-proof spring to compare with device, can not realize suppressing the unsettled phenomenon of spool 9 actions owing to do not need to append the component number, therefore, has the advantage that can reduce the cost.
Claims (4)
1. heating power expansion valve comprises:
Valve body, this valve body have the cooling matchmaker and flow to inflow path and the refrigerant that vaporizer flows through from condenser side and flow to the outflow pathway that compressor side is flowed through from described vaporizer;
And the valve opening that is connected of the high pressure side path of the described inflow path that is connected of the low voltage side path of the described outflow pathway that will be connected with described vaporizer and described condenser side;
And be arranged on described valve body lower portion and flow into the valve chamber of described refrigerant by described high pressure side path;
And be arranged on described valve body top and be used for perception from the temperature of the described refrigerant of described vaporizer outflow and the temperature-sensitive drive portion of pressure;
And according to the described temperature that perceives and pressure and control flows to the spool of the described cold medium flux of described vaporizer, this spool is arranged on the high pressure side of described valve opening;
And be arranged on being used for described spool in the space that forms described valve chamber to closing compression helical spring that the valve direction orders about and the adjusting screw of regulating described compression helical spring urging force;
It is characterized in that described adjusting screw is made up of the cylindrical part that round plate and setting are arranged on this round plate, the inaccessible space that forms described valve chamber of described round plate simultaneously, and extends in the path of described high pressure side.
2. heating power expansion valve as claimed in claim 1 is characterized in that, described cylindrical part exceeds the position of center line of described high pressure side path and extends.
3. heating power expansion valve as claimed in claim 1 or 2 is characterized in that, described cylindrical part and described round plate form as one.
4. as heating power expansion valve as described in the claim 3, it is characterized in that described cylindrical part forms the supporting part of the vibration-proof spring of supported configurations on described spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910079861 CN101832421B (en) | 2009-03-13 | 2009-03-13 | Thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910079861 CN101832421B (en) | 2009-03-13 | 2009-03-13 | Thermostatic expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101832421A true CN101832421A (en) | 2010-09-15 |
| CN101832421B CN101832421B (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910079861 Active CN101832421B (en) | 2009-03-13 | 2009-03-13 | Thermostatic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101832421B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102924A (en) * | 2010-11-17 | 2011-06-22 | 上海星易汽车空调股份有限公司 | Structure for preventing noise and improving heat exchange performance in automotive air-conditioning heating power expansion valve |
| CN102588669A (en) * | 2011-01-07 | 2012-07-18 | 浙江三花汽车零部件股份有限公司 | Thermal expansion valve |
| CN105650318A (en) * | 2014-12-02 | 2016-06-08 | 株式会社Tgk | Expansion valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4542852A (en) * | 1984-03-05 | 1985-09-24 | The Singer Company | Vibration damping device for thermostatic expansion valves |
| JP3209868B2 (en) * | 1994-11-17 | 2001-09-17 | 株式会社不二工機 | Expansion valve |
| JP4666904B2 (en) * | 2003-11-27 | 2011-04-06 | 株式会社不二工機 | Expansion valve |
-
2009
- 2009-03-13 CN CN 200910079861 patent/CN101832421B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102924A (en) * | 2010-11-17 | 2011-06-22 | 上海星易汽车空调股份有限公司 | Structure for preventing noise and improving heat exchange performance in automotive air-conditioning heating power expansion valve |
| CN102588669A (en) * | 2011-01-07 | 2012-07-18 | 浙江三花汽车零部件股份有限公司 | Thermal expansion valve |
| CN102588669B (en) * | 2011-01-07 | 2015-07-01 | 浙江三花汽车零部件有限公司 | Thermal expansion valve |
| CN105650318A (en) * | 2014-12-02 | 2016-06-08 | 株式会社Tgk | Expansion valve |
| CN105650318B (en) * | 2014-12-02 | 2019-08-09 | 株式会社Tgk | Expansion valve |
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| Publication number | Publication date |
|---|---|
| CN101832421B (en) | 2013-01-23 |
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Owner name: ZHEJIANG SANHUA AUTO PARTS CO., LTD. Free format text: FORMER OWNER: ZHEJIANG SANHUA AUTOMOBILE CONTROL SYSTEM CO., LTD. Effective date: 20110510 |
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Free format text: CORRECT: ADDRESS; FROM: 310018 SANHUA INDUSTRIAL PARK, NO. 60, 21ST STREET, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 310018 NO. 60, 21ST STREET, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, HANGZHOU CITY, ZHEJIANG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20110510 Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 21 Avenue, No. 60 Applicant after: Zhejiang Sanhua Automobile Components Co., Ltd. Address before: 310018 three flower Industrial Park, No. 21, 60 Avenue, Hangzhou economic and Technological Development Zone, Zhejiang Applicant before: Zhejiang Sanhua Auto Control System Co., Ltd. |
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| C53 | Correction of patent for invention or patent application | ||
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Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 301 Applicant after: Zhejiang Sanhua Auto Parts Co.,Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 21 Avenue, No. 60 Applicant before: Zhejiang Sanhua Auto Parts Co.,Ltd. |
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| C10 | Entry into substantive examination | ||
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| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG SANHUA AUTO PARTS CO., LTD. Free format text: FORMER NAME: ZHEJIANG SANHUA AUTO PARTS STOCK CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 301 Patentee after: Zhejiang Sanhua Automobile Components Co., Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 301 Patentee before: Zhejiang Sanhua Auto Parts Co.,Ltd. |