CN103076136B - A kind of pressure transducer - Google Patents
A kind of pressure transducer Download PDFInfo
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- CN103076136B CN103076136B CN201110329894.5A CN201110329894A CN103076136B CN 103076136 B CN103076136 B CN 103076136B CN 201110329894 A CN201110329894 A CN 201110329894A CN 103076136 B CN103076136 B CN 103076136B
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- pressure
- pressure core
- guard block
- core
- air inlet
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Abstract
The present invention discloses a kind of pressure transducer, comprises air inlet seat and is placed in the pressure core in described air inlet seat; Pressure core solder joint in described pressure core is electrically connected with lead-in wire, the response signal formed with the pressure sensitive position exporting described pressure core; Also be provided with guard block in described air inlet seat above described pressure core, described lead-in wire axially stretches out through described guard block; And in the axis projection face of pressure core, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core.The pressure sensitive position of pressure transducer described in this programme can not be subject to the interference of any factor coming from outside, thus prevent it to be subject to external force contact, guarantee the response signal comparatively accurately that pressure sensitive position is formed to substantially increase the stability of pressure transducer output performance.
Description
Technical field
The present invention relates to refrigeration technology field, be specifically related to a kind of pressure transducer.
Background technology
Pressure transducer is element important in automatically controlling, and its effect is that the pressure signal of fluid is transformed into specific electric signal by certain method, and this electric signal, as the input signal automatically controlled, finally realizes automatically controlling under the process of control program.
Refer to Fig. 1, Fig. 2, this illustrates the one-piece construction schematic diagram of existing pressure transducer, and Fig. 2 shows packing ring and the pressure core assembly relation vertical view of pressure transducer shown in Fig. 1.
Pressure core 20, packing ring 30 are fitted in air inlet seat 10 successively, and carry out axial location by jump ring 40.Wherein, lead-in wire 201 is welded on pressure core solder joint 203, to export the response signal that electric bridge produces.Packing ring 30 please in the lump shown in composition graphs 2 and pressure core 20 assembly relation vertical view.In the course of work, flowed into by the air intake opening 101 of wall pressure medium from air inlet seat 10, act in pressure core 20, and make the pressure sensitive position 202 in pressure core 20 produce distortion, thus being etched in the electric signal that electric bridge in pressure core 20 produces response, this electric signal 201 exports the electric signal being converted to standard after amplifying circuit processes to by going between.
But existing pressure transducer is by the restriction of himself structure, and the pressure sensitive position 202 in the middle part of the pressure core 20 after having assembled is in completely exposed state, and the circuit that this position is arranged is very responsive to pressure.Be subject to external force and contact very easily build-up of pressure induction position stress deformation, thus the signal that pressure core is exported changes, and causes whole output of products unstable, causes Systematical control maloperation time serious.
In view of this, carry out Curve guide impeller urgently for existing pressure transducer, with the interference effectively avoiding its pressure sensitive position can not be subject to any extraneous factor, guarantee output of products performance more precisely, reliable.
Summary of the invention
For above-mentioned defect, the technical matters that the present invention solves is to provide a kind of pressure transducer, can effectively avoid its pressure sensitive position can not be subject to the interference of any extraneous factor.
Pressure transducer provided by the invention, comprises air inlet seat and is placed in the pressure core in described air inlet seat; Pressure core solder joint in described pressure core is electrically connected with lead-in wire, the response signal formed with the pressure sensitive position exporting described pressure core; Also be provided with guard block in described air inlet seat above described pressure core, described lead-in wire stretches out through described guard block; And in the axis projection face of pressure core, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core.
Preferably, also comprise to offset successively with described the pressure core packing ring and jump ring that arrange in described air inlet seat, described guard block is fixedly connected with described packing ring.
Preferably, described packing ring adopts brass material, and described guard block adopts plastics or plastic cement material.
Preferably, described packing ring and guard block are riveted fixing or integrated injection molding and are shaped.
Preferably, described packing ring and guard block adopt brass material, and both integrally shape.
Preferably, also comprise to offset successively with described the pressure core packing ring and jump ring that arrange in described air inlet seat, described guard block is fixedly connected with described jump ring.
Preferably, in described air inlet seat, also comprise to offset successively with described the pressure core packing ring and jump ring that arrange, and the edge clamping of described guard block is against described packing ring and jump ring or between described packing ring and described pressure core.
Preferably, described guard block adopts brass material.
Preferably, described guard block comprises middle part body and the rib be fixedly connected with that extends to external radiation from described middle part body; In the axis projection face of pressure core, the projection of described middle part body covers the projection at the pressure sensitive position of described pressure core.
Pressure transducer of the present invention has carried out Optimal Structure Designing based on prior art; guard block is provided with above the pressure core of this pressure transducer; due to the projection at the pressure sensitive position of the projection overburden pressure core body of this guard block in the axis projection face of pressure core; thus pressure sensitive position is made can not to be subject to the interference of any factor coming from outside; thus prevent it to be subject to external force contact; guarantee the response signal comparatively accurately that pressure sensitive position is formed to substantially increase the stability of pressure transducer output performance.
In preferred version of the present invention, also comprise to offset successively with the pressure core packing ring and jump ring that arrange in air inlet seat, this guard block is fixedly connected with packing ring; Further, packing ring adopts brass material, and guard block adopts plastics or plastic cement material, and both rivet fixing or integrated injection molding shaping.Setting like this, the packing ring being used on the one hand limiting pressure core body relative axial position adopts brass material to make, can guarantee its meet duty under carrying needs; On the other hand, adopt plastics or plastic cement material to make for the protection of the guard block blocking pressure sensitive position, on the basis of effective controlled pressure sensor gross weight, material cost can be saved further.
Pressure transducer provided by the invention is applicable to any refrigeration system.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of a kind of typical pressure transducer in prior art;
Fig. 2 shows packing ring and the pressure core assembly relation vertical view of pressure transducer shown in Fig. 1;
Fig. 3 is the one-piece construction schematic diagram of pressure transducer described in the first embodiment;
Fig. 4 to show described in the first embodiment assembly relation axle between guard block and pressure core and measures intention;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the one-piece construction schematic diagram of pressure transducer described in the second embodiment;
Fig. 7 is the I portion enlarged drawing of Fig. 6;
Fig. 8 is the one-piece construction schematic diagram of pressure transducer described in the 3rd embodiment;
Fig. 9 is the II portion enlarged drawing of Fig. 8;
Shown in Figure 10, the figure shows the vertical view of guard block described in the present embodiment.
In figure:
Air inlet seat 1, air intake opening 11, pressure core 2, pressure core solder joint 21, lead-in wire 22, pressure sensitive position 23, guard block 3,3 ', 3 ", middle part body 31,31 ", rib 32,32 ", outer ring 33 ", packing ring 4,4 ', 4 ", jut 41 ', jump ring 5, efferent 6.
Embodiment
Core of the present invention is to provide a kind of pressure transducer, by Optimal Structure Designing to avoid its pressure sensitive position not by the interference in any external world.
Present embodiment is illustrated below in conjunction with Figure of description.
Refer to Fig. 3, this figure is the one-piece construction schematic diagram of pressure transducer described in the first embodiment.
Pressure transducer comprises air inlet seat 1 and is placed in the pressure core 2 in air inlet seat 1; Pressure core solder joint 21 in pressure core 2 is electrically connected with lead-in wire 22, the response signal formed with the pressure sensitive position 23 of output pressure core body 2; Equally, acted in pressure core 2 by wall pressure medium after the air intake opening 11 of air inlet seat 1 flows into, and make the pressure sensitive position 23 in pressure core 2 produce distortion, thus the electric bridge be etched in pressure core 2 produces the electric signal of response, this electric signal is processed by 21 amplifying circuits exporting efferent 6 to that go between, and the electric signal being converted to standard exports.
In the present embodiment, in the air inlet seat 1 above pressure core 2, be also provided with guard block 3; Specifically please also refer to Fig. 4 and Fig. 5, wherein, Fig. 4 to show described in the present embodiment assembly relation axle between guard block and pressure core and measures intention, and Fig. 5 is the vertical view of Fig. 4.
Do not disturb by extraneous factor for realizing blocking protection pressure sensitive position 23, in the axis projection face of pressure core 2, the projection at the pressure sensitive position 23 of the projection overburden pressure core body 2 of this guard block 3.Meanwhile, guard block 3 should be fixedly installed on the top of pressure core 2, effectively to prevent pressure sensitive position 23 to be subject to external force contact, guarantees the response signal comparatively accurately formed.In this programme, guard block 3 is fixedly connected with the packing ring 4 of the relative axial position of limiting pressure core body 2, and both adopt brass material integrally to shape.
Shown in figure, adopt jump ring 5 to carry out axial location outside packing ring 4, jump ring 5, packing ring 4 offset with pressure core 2 successively, so that its pressure sensitive position 23 produces deformation accurately under the effect of pressure medium.Should be appreciated that the axial location of packing ring 4 is not limited to jump ring locator meams, as long as the function that can realize axial location needs, such as, weld between packing ring 4 with air inlet seat 1 or rivet.Certainly, from process costs angle, adopt jump ring locator meams to be optimal case.
Pressure transducer described in this programme has carried out optimal design on the basis that prior art is compared; owing to being provided with guard block 3 above pressure core 2; thus pressure sensitive position 22 is made can not to be subject to the interference of any factor coming from outside; thus prevent it to be subject to external force contact; guarantee the response signal comparatively accurately that pressure sensitive position is formed to substantially increase the stability of pressure transducer output performance.
Particularly, the rib 32 be fixedly connected with that guard block 3 in this programme comprises middle part body 31 and extends to external radiation from middle part body 31, the magnitude setting of this rib 32 can one or other complex roots according to actual needs, should be appreciated that and are not limited to three shown in figure piece; Setting like this, lead-in wire 22 can stretch out between adjacent two ribs.Obviously, in the axis projection face of pressure core 2, the projection of middle part body 31 should the projection at overburden pressure induction position 23, blocks protective effect reliably to realize it for pressure sensitive position 23.
Certainly, also split-type design can be adopted between guard block and packing ring.
Refer to Fig. 6, the figure shows the one-piece construction schematic diagram of pressure transducer described in the second embodiment.
The main body of pressure transducer described in the present embodiment forms identical with the first embodiment, and for clear illustrating is distinguished between the two, identical components adopts identical Reference numeral to illustrate.Compared with the first embodiment, the difference of this programme is: guard block 3 ' and packing ring 4 ' are two components be fixedly connected with, and packing ring 4 ' adopts brass material, and guard block 3 ' adopts plastics or plastic cement material.Setting like this, the packing ring 4 ' for limiting pressure core body 2 relative axial position adopts brass material to make, can guarantee its meet duty under carrying needs; And adopt plastics or plastic cement material to make for the protection of the guard block 3 ' blocking pressure sensitive position 22, on the basis of effective controlled pressure sensor gross weight, material cost can be saved further.
In fact, can rivet fixing between packing ring 4 ' and guard block 3 ', or integrated injection molding is shaped.
As shown in Figure 7, this figure is the I portion enlarged drawing of Fig. 6.Packing ring 4 ' shown in diagram has the jut 41 ' radially-inwardly stretched out, and inserts in mould after the packing ring 4 ' of this version machines, adopt Shooting Technique complete guard block 3 ' shaping and with being fixedly connected with between packing ring 4 '.Equally, the concrete structure of guard block 3 ' namely can be identical with the form of the first embodiment, the rib be fixedly connected with namely comprising middle part body and extend to external radiation from middle part body.Certainly, also can be entirety in the form of sheets, sheet guard block offers lead-in wire and stretches out hole.
As previously mentioned, other formations of the present embodiment are identical with the first embodiment, therefore repeat no more.
Aforementioned first embodiment is all fixedly connected with packing ring with the guard block of pressure transducer described in the second embodiment.The present invention is fixedly connected with relation to guard block and has done further improvement; such as; the scheme realizing pressure core axial location is coordinated for what adopt jump ring and packing ring; guard block also can select (not shown) on fixing jump ring after finishing assembly; can also be fixed on the air inlet seat inwall above jump ring, use needs all in the scope of the application's request protection as long as meet.
In addition, please also refer to Fig. 8 and Fig. 9, wherein, Fig. 8 is the one-piece construction schematic diagram of pressure transducer described in the 3rd embodiment; Fig. 9 is the II portion enlarged drawing of Fig. 8.
The main body of pressure transducer described in the present embodiment forms identical with first and second embodiment, and for clear illustrating is distinguished between the two, identical components adopts identical Reference numeral to illustrate.Compared with previous embodiment, the difference of this programme is: guard block 3 " edge clamping be against packing ring 4 " and jump ring 5 " between.
As shown in the figure, " be bearing carrier, therefore, guard block 3 " adopts brass material to the guard block 3 due in this assembling position relation.
Equally; guard block 3 " concrete structure also can have multiple choices; such as; can be identical with the form of the first embodiment; namely; comprise middle part body and the rib be fixedly connected with that extends to external radiation from middle part body, the outer end of each rib is inlaid in (not shown) in packing ring and effectively can controls axial dimension.Certainly, also can be designed as and offering lead-in wire and stretch out the entirety guard block 3 in the form of sheets in hole ".
Also as shown in Figure 10, the vertical view of guard block described in the present embodiment can be the figure shows.
This guard block 3 " comprising middle part body 31 ", from middle part body 32 " rib 32 be fixedly connected with to external radiation extends ", and with each rib 32 " outer end be connected outer ring 33 ".After having assembled, this guard block 3 " outer ring 33 " clips at packing ring 4 the reliable location of " and between jump ring 5, can realize guard block 3 ".
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (8)
1. a pressure transducer, comprises air inlet seat and is placed in the pressure core in described air inlet seat; Pressure core solder joint in described pressure core is electrically connected with lead-in wire, the response signal formed with the pressure sensitive position exporting described pressure core; It is characterized in that, be also provided with guard block in the described air inlet seat above described pressure core, described lead-in wire stretches out through described guard block; And in the axis projection face of pressure core, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core;
Also comprise to offset successively with described the pressure core packing ring and jump ring that arrange in described air inlet seat, and the edge clamping of described guard block is against described packing ring and jump ring or between described packing ring and described pressure core.
2. pressure transducer according to claim 1, is characterized in that, described guard block adopts brass material.
3. a pressure transducer, comprises air inlet seat and is placed in the pressure core in described air inlet seat; Pressure core solder joint in described pressure core is electrically connected with lead-in wire, the response signal formed with the pressure sensitive position exporting described pressure core; It is characterized in that, be also provided with guard block in the described air inlet seat above described pressure core, described lead-in wire stretches out through described guard block; And in the axis projection face of pressure core, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core; Also comprise to offset successively with described the pressure core packing ring and jump ring that arrange in described air inlet seat, described guard block is fixedly connected with described packing ring.
4. pressure transducer according to claim 3, is characterized in that, described packing ring adopts brass material, and described guard block adopts plastics or plastic cement material.
5. pressure transducer according to claim 4, is characterized in that, described packing ring and guard block are riveted fixing or integrated injection molding and be shaped.
6. pressure transducer according to claim 1, is characterized in that, described packing ring and guard block adopt brass material, and both integrally shape.
7. a pressure transducer, comprises air inlet seat and is placed in the pressure core in described air inlet seat; Pressure core solder joint in described pressure core is electrically connected with lead-in wire, the response signal formed with the pressure sensitive position exporting described pressure core; It is characterized in that, be also provided with guard block in the described air inlet seat above described pressure core, described lead-in wire stretches out through described guard block; And in the axis projection face of pressure core, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core; Also comprise to offset successively with described the pressure core packing ring and jump ring that arrange in described air inlet seat, described guard block is fixedly connected with described jump ring.
8. pressure transducer according to any one of claim 1 to 7, is characterized in that, the rib be fixedly connected with that described guard block comprises middle part body and extends to external radiation from described middle part body; In the axis projection face of pressure core, the projection of described middle part body covers the projection at the pressure sensitive position of described pressure core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329894.5A CN103076136B (en) | 2011-10-26 | 2011-10-26 | A kind of pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329894.5A CN103076136B (en) | 2011-10-26 | 2011-10-26 | A kind of pressure transducer |
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| Publication Number | Publication Date |
|---|---|
| CN103076136A CN103076136A (en) | 2013-05-01 |
| CN103076136B true CN103076136B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110329894.5A Active CN103076136B (en) | 2011-10-26 | 2011-10-26 | A kind of pressure transducer |
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| CN (1) | CN103076136B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021674A (en) * | 1996-04-01 | 2000-02-08 | Robert Bosch Gmbh | Pressure sensor having at least one connector element arranged flush with a mounting surface and a capillary adhesive layer arranged between a support plate and the mounting surface |
| US6354153B1 (en) * | 1999-06-24 | 2002-03-12 | Robert Bosch Gmbh | Pressure sensor connection device |
| CN1633587A (en) * | 2000-11-01 | 2005-06-29 | 罗伯特·博施有限公司 | Pressure sensor module |
| CN1914494A (en) * | 2003-12-03 | 2007-02-14 | 霍尼韦尔国际公司 | Isolated pressure transducer |
| CN201503323U (en) * | 2009-10-14 | 2010-06-09 | 西安中星测控有限公司 | Ceramic pressure core body assembly structure |
| CN102004014A (en) * | 2009-08-28 | 2011-04-06 | 罗伯特·博世有限公司 | Pressure sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10042734C1 (en) * | 2000-08-31 | 2002-03-14 | Wabco Gmbh & Co Ohg | Multi-purpose pressure sensor has annular adhesive surface for securing pressure sensor hybrid component group within sensor housing |
-
2011
- 2011-10-26 CN CN201110329894.5A patent/CN103076136B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021674A (en) * | 1996-04-01 | 2000-02-08 | Robert Bosch Gmbh | Pressure sensor having at least one connector element arranged flush with a mounting surface and a capillary adhesive layer arranged between a support plate and the mounting surface |
| US6354153B1 (en) * | 1999-06-24 | 2002-03-12 | Robert Bosch Gmbh | Pressure sensor connection device |
| CN1633587A (en) * | 2000-11-01 | 2005-06-29 | 罗伯特·博施有限公司 | Pressure sensor module |
| CN1914494A (en) * | 2003-12-03 | 2007-02-14 | 霍尼韦尔国际公司 | Isolated pressure transducer |
| CN102004014A (en) * | 2009-08-28 | 2011-04-06 | 罗伯特·博世有限公司 | Pressure sensor |
| CN201503323U (en) * | 2009-10-14 | 2010-06-09 | 西安中星测控有限公司 | Ceramic pressure core body assembly structure |
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| Publication number | Publication date |
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| CN103076136A (en) | 2013-05-01 |
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Effective date of registration: 20170214 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: Sanhua Refrigeration Group Co., Ltd., Zhejang Address before: 312500 Liquan village of Chengguan Zhejiang city of Shaoxing province Xinchang County town Patentee before: Zhejiang Sanhua Group Co., Ltd. |
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Effective date of registration: 20220105 Address after: 312500 No. 358, Dadao West Road, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |