CN103076136A - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
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- CN103076136A CN103076136A CN2011103298945A CN201110329894A CN103076136A CN 103076136 A CN103076136 A CN 103076136A CN 2011103298945 A CN2011103298945 A CN 2011103298945A CN 201110329894 A CN201110329894 A CN 201110329894A CN 103076136 A CN103076136 A CN 103076136A
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- pressure
- core body
- guard block
- pressure core
- packing ring
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Abstract
The invention discloses a pressure sensor which comprises an air inlet seat and a pressure core, wherein the pressure core is arranged in the air inlet seat; a pressure core bonding point on the pressure core is electrically connected with a lead, so as to output a response signal formed in a pressure sensing position of the pressure core; a protecting component is arranged in the air inlet seat above the pressure core, and the lead passes through the protecting component and axially extends; and in the axial projection surface of the pressure core, the projection of the protecting component covers that of the pressure sensing position of the pressure core. The pressure sensing position of the pressure sensor provided by the scheme cannot be disturbed by any factor from outside, thereby preventing contact with external force and guaranteeing that the more accurate response signal is formed in the pressure sensing position, and the stability of the output performance of the pressure sensor is greatly improved.
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 important element in the automatically control, and its effect is that the pressure signal with fluid is transformed into specific electric signal by certain method, and this electric signal is as the automatic input signal of control, finally realizes automatically control under the processing of control program.
See also 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 body assembly relation vertical view of pressure transducer shown in Fig. 1.
Yet existing pressure transducer is subjected to the restriction of himself structure, and the pressure sensitive position 202 at pressure core body 20 middle parts after assembling is finished is in fully exposed state, and the circuit that this position arranges is very responsive to pressure.Be subject to external force and contact very easily build-up of pressure induction position stress deformation, thereby so that the signal that the pressure core body is exported changes, cause whole output of products unstable, cause system's control maloperation when serious.
In view of this, demand the design that improves for existing pressure transducer urgently, can not be subject to the interference of any extraneous factor effectively to avoid its pressure sensitive position, guarantee that the output of products performance more precisely, reliably.
Summary of the invention
For defects, 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 places the interior pressure core body of described air inlet seat; Be electrically connected with lead-in wire on the pressure core body solder joint on the described pressure core body, the response signal that forms with the pressure sensitive position of exporting described pressure core body; Also be provided with guard block in the described air inlet seat of described pressure core body top, described lead-in wire stretches out through described guard block; And in the axis projection face of pressure core body, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core body.
Preferably, also comprise the packing ring and the jump ring that offset successively and arrange with described pressure core body in the described air inlet seat, described guard block is fixedly connected with described packing ring.
Preferably, described packing ring adopts the brass material, and described guard block adopts plastics or plastic cement material.
Preferably, the riveted joint of described packing ring and guard block is fixed or the integrated injection molding shaping.
Preferably, described packing ring and guard block adopt the brass material, and both shape one.
Preferably, also comprise the packing ring and the jump ring that offset successively and arrange with described pressure core body in the described air inlet seat, described guard block is fixedly connected with described jump ring.
Preferably, also comprise the packing ring and the jump ring that offset successively and arrange with described pressure core body in the described air inlet seat, and the edge clamping of described guard block is against between described packing ring and jump ring or described packing ring and the described pressure core body.
Preferably, described guard block adopts the brass material.
Preferably, described guard block comprises middle part body and the rib that is fixedly connected with usefulness that extends to external radiation from described middle part body; In the axis projection face of pressure core body, the projection of described middle part body covers the projection at the pressure sensitive position of described pressure core body.
Pressure transducer of the present invention has carried out Optimal Structure Designing based on prior art; the pressure core body top of this pressure transducer is provided with guard block; because 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 body; thereby so that the pressure sensitive position can not be subject to coming from the interference of any factor in the outside; thereby prevent that it is subject to the external force contact; guarantee the comparatively accurately response signal that the pressure sensitive position forms, greatly improved the stability of pressure transducer output performance.
In preferred version of the present invention, also comprise the packing ring and the jump ring that offset successively and arrange with the pressure core body in the air inlet seat, this guard block is fixedly connected with packing ring; Further, packing ring adopts the brass material, and guard block adopts plastics or plastic cement material, and both rivet fixing or integrated injection molding is shaped.So arrange, the packing ring that is used on the one hand limiting pressure core body relative axial position adopts the brass material to make, and can guarantee that it satisfies the carrying needs under the duty; On the other hand, adopt plastics or plastic cement material to make for the protection of the guard block that blocks the pressure sensitive position, on the basis of effective controlled pressure sensor gross weight, can further save material cost.
Pressure transducer provided by the invention is applicable to any refrigeration system.
Description of drawings
Fig. 1 is the one-piece construction schematic diagram of a kind of typical pressure transducer in the prior art;
Fig. 2 shows packing ring and the pressure core body assembly relation vertical view of pressure transducer shown in Fig. 1;
Fig. 3 is the one-piece construction schematic diagram of the described pressure transducer of the first embodiment;
Fig. 4 shows that the assembly relation axle measures intention between guard block described in the first embodiment and the pressure core body;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the one-piece construction schematic diagram of the described pressure transducer of the second embodiment;
Fig. 7 is the I section enlarged drawing of Fig. 6;
Fig. 8 is the one-piece construction schematic diagram of the described pressure transducer of the 3rd embodiment;
Fig. 9 is the II section enlarged drawing of Fig. 8;
Shown in Figure 10, the figure shows the vertical view of the described guard block of the present embodiment.
Among the figure:
Embodiment
Core of the present invention provides a kind of pressure transducer, by Optimal Structure Designing to avoid its pressure sensitive position not to be subjected to the interference in any external world.
Specify present embodiment below in conjunction with Figure of description.
See also Fig. 3, this figure is the one-piece construction schematic diagram of the described pressure transducer of the first embodiment.
Pressure transducer comprises air inlet seat 1 and places pressure core body 2 in the air inlet seat 1; Be electrically connected with lead-in wire 22 on the pressure core body solder joint 21 on the pressure core body 2, the response signal that forms with the pressure sensitive position 23 of output pressure core body 2; Equally, acted on the pressure core body 2 after the air intake opening 11 of air inlet seat 1 flows into by the wall pressure medium, and so that the pressure sensitive position 23 on the pressure core body 2 produces distortion, thereby the electric bridge that is etched on the pressure core body 2 produces the electric signal of response, this electric signal is processed by lead-in wire 21 amplifying circuits that export efferent 6 to, is converted to the electric signal output of standard.
In the present embodiment, also be provided with guard block 3 in the air inlet seat 1 above pressure core body 2; Specifically please in the lump referring to Fig. 4 and Fig. 5, wherein, Fig. 4 shows that the assembly relation axle measures intention between guard block described in the present embodiment and the pressure core body, and Fig. 5 is the vertical view of Fig. 4.
For realizing that blocking protection pressure sensitive position 23 not disturbed by extraneous factor, in the axis projection face of pressure core body 2, the projection at the pressure sensitive position 23 of the projection overburden pressure core body 2 of this guard block 3.Simultaneously, guard block 3 should be fixedly installed on the top of pressure core body 2, is subject to the external force contact effectively to prevent pressure sensitive position 23, guarantees the comparatively accurately response signal that forms.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 one to shape.
Shown in the figure, packing ring 4 outsides adopt jump ring 5 to carry out axial location, and jump ring 5, packing ring 4 offset with pressure core body 2 successively, so that its pressure sensitive position 23 produces deformation accurately under the effect of pressure medium.The axial location that should be appreciated that packing ring 4 is not limited to the jump ring locator meams, if can realize the function of axial location need all can, such as, welding or rivet between packing ring 4 and the air inlet seat 1.Certainly, from the process costs angle, adopting the jump ring locator meams is optimal case.
The described pressure transducer of this programme has carried out optimal design on the basis that prior art is compared; owing to above pressure core body 2, being provided with guard block 3; thereby so that pressure sensitive position 22 can not be subject to coming from the interference of any factor in the outside; thereby prevent that it is subject to the external force contact; guarantee the comparatively accurately response signal that the pressure sensitive position forms, greatly improved the stability of pressure transducer output performance.
Particularly, guard block 3 in this programme comprises middle part body 31 and the rib that is fixedly connected with usefulness 32 that extends to external radiation from middle part body 31, the magnitude setting of this rib 32 is one or other complex roots according to actual needs, should be appreciated that to be not limited to three shown in the figure; So arrange, lead-in wire 22 can stretch out between adjacent two ribs.Obviously, in the axis projection face of pressure core body 2, the projection of middle part body 31 should overburden pressure the projection at induction position 23, with its protective effect of blocking for pressure sensitive position 23 of reliable realization.
Certainly, also can adopt split-type design between guard block and the packing ring.
See also Fig. 6, the figure shows the one-piece construction schematic diagram of the described pressure transducer of the second embodiment.
The main body of the described pressure transducer of the present embodiment consists of with the first embodiment identical, distinguishes for clear illustrating between the two, and identical components adopts identical Reference numeral to illustrate.Compare with the first embodiment, the difference of this programme is: guard block 3 ' with packing ring 4 ' be two members that are fixedly connected with, and packing ring 4 ' employing brass material, guard block 3 ' employing plastics or plastic cement material.So arrange, be used for the packing ring 4 of limiting pressure core body 2 relative axial positions ' employing brass material and make, can guarantee that it satisfies the carrying needs under the duty; And make for the protection of the guard block 3 that blocks pressure sensitive position 22 ' employing plastics or plastic cement material, on the basis of effective controlled pressure sensor gross weight, can further save material cost.
In fact, packing ring 4 ' and guard block 3 ' between can rivet fixingly, perhaps integrated injection molding is shaped.
As shown in Figure 7, this figure is the I section enlarged drawing of Fig. 6.The jut 41 that packing ring 4 shown in the diagram ' have radially inwardly stretches out ', the packing ring 4 of this version ' insert in the mould after machining, adopt Shooting Technique finish guard block 3 ' shaping and with packing ring 4 ' between be fixedly connected with.Equally, guard block 3 ' concrete structure namely can be identical with the form of the first embodiment, namely comprise middle part body and the rib that is fixedly connected with usefulness that extends to external radiation from the middle part body.Certainly, also can for integral body in the form of sheets, offer lead-in wire at the sheet guard block and stretch out the hole and get final product.
As previously mentioned, other of the present embodiment consist of with the first embodiment identical, therefore repeat no more.
Aforementioned the first embodiment all is fixedly connected with packing ring with the guard block of the described pressure transducer of the second embodiment.The present invention is fixedly connected with relation to guard block and has done further improvement; such as; for the scheme that realizes pressure core body axial location that cooperates that adopts jump ring with packing ring; guard block also can select to be fixed on (not shown) on the jump ring of assembling after finishing; can also be fixed on the air inlet seat inwall of jump ring top, use needs all in the scope that the application asks for protection as long as satisfy.
In addition, please in the lump referring to Fig. 8 and Fig. 9, wherein, Fig. 8 is the one-piece construction schematic diagram of the described pressure transducer of the 3rd embodiment; Fig. 9 is the II section enlarged drawing of Fig. 8.
The main body of the described pressure transducer of the present embodiment consists of with first and second embodiment identical, distinguishes for clear illustrating between the two, and identical components adopts identical Reference numeral to illustrate.Compare 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, because the guard block 3 in this assembling position relation " be bearing carrier, therefore, guard block 3 " employing brass material.
Equally; guard block 3 " concrete structure also multiple choices can be arranged; such as; can be identical with the form of the first embodiment; namely; comprise middle part body and the rib that is fixedly connected with usefulness that extends to external radiation from the middle part body, the outer end of each rib is inlaid in the packing ring (not shown) can effectively controls axial dimension.Certainly, also can be designed as and offering lead-in wire and stretch out the integral body guard block 3 in the form of sheets in hole ".
Also can as shown in Figure 10, the figure shows the vertical view of the described guard block of the present embodiment.
This guard block 3 " comprise middle part body 31 ", from middle part body 32 " rib that is fixedly connected with usefulness 32 that extends to external radiation ", and with each rib 32 " outer end link to each other outer ring 33 ".After assembling was finished, this guard block 3 " outer ring 33 " clipped at packing ring 4 the reliable location of " and between the jump ring 5, can realize guard block 3 ".
The above only is 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. a pressure transducer comprises air inlet seat and places the interior pressure core body of described air inlet seat; Be electrically connected with lead-in wire on the pressure core body solder joint on the described pressure core body, the response signal that forms with the pressure sensitive position of exporting described pressure core body; It is characterized in that, also be provided with guard block in the described air inlet seat of described pressure core body top, described lead-in wire stretches out through described guard block; And in the axis projection face of pressure core body, the projection of described guard block covers the projection at the pressure sensitive position of described pressure core body.
2. pressure transducer according to claim 1 is characterized in that, also comprises the packing ring and the jump ring that offset successively and arrange with described pressure core body in the described air inlet seat, and described guard block is fixedly connected with described packing ring.
3. pressure transducer according to claim 2 is characterized in that, described packing ring adopts the brass material, and described guard block adopts plastics or plastic cement material.
4. pressure transducer according to claim 3 is characterized in that, described packing ring and guard block riveted joint fix or integrated injection molding is shaped.
5. pressure transducer according to claim 2 is characterized in that, described packing ring and guard block adopt the brass material, and both shape one.
6. pressure transducer according to claim 1 is characterized in that, also comprises the packing ring and the jump ring that offset successively and arrange with described pressure core body in the described air inlet seat, and described guard block is fixedly connected with described jump ring.
7. pressure transducer according to claim 1; it is characterized in that; also comprise the packing ring and the jump ring that offset successively and arrange with described pressure core body in the described air inlet seat, and the edge clamping of described guard block is against between described packing ring and jump ring or described packing ring and the described pressure core body.
8. pressure transducer according to claim 7 is characterized in that, described guard block adopts the brass material.
9. each described pressure transducer in 8 according to claim 1 is characterized in that, described guard block comprises middle part body and the rib that is fixedly connected with usefulness that extends to external radiation from described middle part body; In the axis projection face of pressure core body, the projection of described middle part body covers the projection at the pressure sensitive position of described pressure core body.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103076136A true CN103076136A (en) | 2013-05-01 |
| CN103076136B 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 (7)
| 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 |
| 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 |
| 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 |
-
2011
- 2011-10-26 CN CN201110329894.5A patent/CN103076136B/en active Active
Patent Citations (7)
| 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 |
| 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 |
| 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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| CN103076136B (en) | 2015-12-16 |
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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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| TR01 | Transfer of patent right |
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. |
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