CN102313413A - Degree of superheat sensing device - Google Patents
Degree of superheat sensing device Download PDFInfo
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- CN102313413A CN102313413A CN2010102187917A CN201010218791A CN102313413A CN 102313413 A CN102313413 A CN 102313413A CN 2010102187917 A CN2010102187917 A CN 2010102187917A CN 201010218791 A CN201010218791 A CN 201010218791A CN 102313413 A CN102313413 A CN 102313413A
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Abstract
The present invention relates to a kind of degree of superheat sensing device, comprising: valve body, said valve body are limited with inner chamber and with first and second openings of inner chamber and external communications; Lasso, said lasso are arranged in the said inner chamber said inner chamber is separated into isolated each other upper cavity and lower chamber, wherein said lower chamber and said first and second open communication; Circuit board, said circuit board are arranged in the said upper cavity; First and second tube connectors, said first and second tube connectors link to each other with said first and second openings respectively; Temperature and pressure transmitter, said temperature and pressure transmitter link to each other with said circuit board and the bottom of passing said lasso extend in the said lower chamber; Link to each other with said circuit board with an end and the other end extends to the outside lead of said valve body from said upper cavity.That degree of superheat sensing device of the present invention has is simple in structure, volume reduces, simple installation, reliability and precision improves, the life-span is long advantage.
Description
Technical field
The present invention relates to a kind of degree of superheat sensing device, especially relates to the degree of superheat sensing device in a kind of refrigeration system.
Background technology
Traditionally, the technology of the fluid superheat degree in the measurement refrigeration system is divided into mechanical type and two kinds of metering systems of electronic type.The mechanical type measurement mechanism is measured the degree of superheat through the bulb induced flow temperature of itself and through the outer balance pipe induction pressure, and feeds back through the mode that is converted into equilibrant force.The shortcoming of traditional mechanical formula measurement mechanism is that bulb is installed in the pipeline outside; The detection error is high; Outer balance pipe is installed in pipeline inside; Installation requirement is high, and design difficulty is big, complex structure, volume are big, pipeline outside affected by environment big, mechanical organ is easy to wear, the fluid that fills is revealed easily, installation and removal are complicated, maintenance difficult and life-span are short.
Electronic measuring device is to measure temperature and pressure respectively through being installed to the outside independently temperature sensor of the pipeline independently pressure sensor inner with being installed to pipeline, and with programmable chip control output.Therefore likewise, subelement is installed in the pipeline outside, and subelement is installed in pipeline inside, has complex structure equally, volume is big, temperature sensor damages easily, installation and removal complicated, maintenance difficult and short shortcoming of life-span.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.For this reason, one object of the present invention be to propose a kind of simple in structure, volume reduces, the degree of superheat sensing device in simple installation, reliability and precision improves, the life-span the is long refrigeration system.
Degree of superheat sensing device according to the embodiment of the invention comprises: valve body, said valve body are limited with inner chamber and with first and second openings of inner chamber and external communications; Lasso, said lasso are arranged in the said inner chamber said inner chamber is separated into upper cavity and lower chamber, wherein said lower chamber and said first and second open communication; Circuit board, said circuit board are arranged in the said upper cavity; First and second tube connectors, said first and second tube connectors link to each other with said first and second openings respectively; Temperature and pressure transmitter, said temperature and pressure transmitter are arranged on the said lasso and with said circuit board and link to each other, and the bottom that said temperature and pressure transmitter passes said lasso extend in the said lower chamber and be isolated each other between upper cavity and the lower chamber; And lead, an end of said lead link to each other with said circuit board and the other end to extend to said valve body from said upper cavity outside.
Owing to adopt the temperature and pressure that to measure cold-producing medium simultaneously and the integral type temperature and pressure transmitter that can directly export the current signal relevant with the refrigerant superheat degree; Temperature and pressure transmitter is installed in valve inner; And the circuit board that links to each other with temperature and pressure transmitter also is installed in the valve body; That the cavity of resorption that the epicoele at circuit board place and temperature and pressure transmitter stretch into seals each other is isolated, therefore simple in structure according to the degree of superheat sensing device of the embodiment of the invention, volume reduces, simple installation, reliability and precision raising, life-span are long.
In addition, degree of superheat sensing device according to the above embodiment of the present invention can also have following additional technical characterictic:
Said valve body comprises body and loam cake, and said loam cake is installed in the upper end of said body and is formed with the through hole that supplies said lead to pass.
The upper end of said lasso is formed with flange, and said flange is connected between said loam cake and the said body and said lasso links to each other with valve body through laser weld.
Said loam cake is formed with upwardly extending tube in said through hole.
Degree of superheat sensing device according to the embodiment of the invention further comprises the protection tube that is enclosed within said tube outside, and the upper end of said protection tube extends upward and surpasses said tube.
Said first and second tube connectors and valve body are integrally formed.
Said first and second tube connectors weld or are threaded onto on the said valve body.
Said temperature and pressure transmitter is solder-connected on the said lasso.
The outside of said lead is with the wire-protecting cover.
One end of said lead links to each other with said circuit board through connect-disconnect structure.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the structural representation according to the degree of superheat sensor device of the embodiment of the invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; Term " on ", the orientation of indication such as D score or position relation be for based on orientation shown in the drawings or position relation; Only be for the ease of describing the present invention rather than requiring the present invention therefore can not be interpreted as limitation of the present invention with specific azimuth configuration and operation.
Fig. 1 is the structural representation according to the degree of superheat sensor device of the embodiment of the invention.As shown in Figure 1, comprise according to the degree of superheat sensor device of the embodiment of the invention: valve body 1, lasso 2, circuit board 3, the first tube connector 4a, the second tube connector 4b, temperature and pressure transmitter 5 and lead 6.
Be limited with inner chamber in the valve body 1 and with first and second openings (left side among Fig. 1 and right openings) of inner chamber and external communications.Lasso 2 is arranged in the inner chamber of valve body 1 inner chamber is separated into upper cavity A and lower chamber B, wherein the lower chamber B and first and second open communication.
Circuit board 3 is arranged in the upper cavity A.The first tube connector 4a links to each other with first and second openings respectively with the second tube connector 4b, and in some embodiments of the invention, the first tube connector 4a and the second tube connector 4b can be integrally formed with valve body 1, perhaps is threaded with valve body 1 or welds.Thereby cold-producing medium can get into lower chamber B through first opening from the first tube connector 4a, discharges valve body from the second opening 4b through the second tube connector 4b then.
Temperature and pressure transmitter 5 is arranged on the lasso 2, and links to each other with circuit board 3, for example links to each other with circuit board 3 through solder.Simultaneously, temperature and pressure transmitter 5 extend in the lower chamber B with the bottom that lasso 2 welded and passed lasso 2, and for example, the bottom of lasso 2 can be formed with through hole, and temperature and pressure transmitter 5 passes through hole and extend in the lower chamber B.Need explanation to be, owing to need between upper cavity A and the lower chamber B to completely cut off, so need sealing between pressure sensor 5 and the lasso 2, also need sealing between this outer collar 2 and the valve body 1.
Temperature and pressure transmitter 5 can be measured the for example temperature and pressure of cold-producing medium of fluid simultaneously, and the output current signal relevant with the refrigerant superheat degree.As shown in Figure 1, in some embodiments of the invention, temperature and pressure transmitter 5 is connected on the lasso 2 through laser weld, and temperature and pressure transmitter 5 links to each other with the lower surface of circuit board 3 and the free end of temperature and pressure transmitter 5 stretches in the lower chamber B.
One end of lead 6 links to each other with circuit board 3 and the other end extends to valve body 1 outside from upper cavity A, for example links to each other with the controller (not shown).In one embodiment of the invention, as shown in Figure 1, lead 6 (for example quad) links to each other with the upper surface of circuit board 3, and for the ease of connecting and dismounting, lead 6 can link to each other with circuit board 3 through connect-disconnect structure.But the present invention is not limited to this, for example lead 6 also can with circuit board 3 direct solderings.
According to one embodiment of present invention, valve body 1 comprises body 12 and loam cake 11, and valve body 1 is formed by stainless steel (SS) punching press.According to one embodiment of present invention, loam cake 11 upper end and the top surface that are installed in body 12 is formed with the through hole 13 that supplies lead 6 to pass.In an example of the present invention, the upper end of lasso 2 is formed with flange 21, and flange 21 can be connected between loam cake 11 and the body 12 through laser weld, thereby can guarantee the bulk strength of degree of superheat sensing device and avoid leakage.In an example of the present invention, lasso 2 can be processed by stainless steel.
As stated, the flange of lasso 2 upper ends is connected between loam cake 11 and the body 12 through laser weld, thereby the inner chamber of valve body 1 is divided into A of upper chamber and lower chambers B; Be used for mounting circuit boards 3 in the upper chamber, temperature and pressure transmitter 5 links to each other with circuit board 3 and stretches in the lower chambers B, for example; Bottom through with temperature and pressure transmitter 5 and lasso 2 links to each other through laser welded seal ground, thereby isolated A of upper chamber and lower chambers B avoid in the cold-producing medium entering A of upper chamber in the lower chambers B; Therefore, the A of upper chamber also can be called the element cavity that is used to hold the various elements that comprise circuit board 3, and lower chambers B can be called the measurement chamber; A of upper chamber and lower chambers B are isolated; Anti-fluid gets in the A of upper chamber, damages circuit board 3 etc., and has guaranteed the normal detection of temperature and pressure transmitter 5; And prevent that the fluid in first and second tube connectors 4 is leaked in the compressor, thereby the assurance refrigeration system is normally moved; Simultaneously, can guarantee bulk strength according to the degree of superheat sensing device of the embodiment of the invention.
According to one embodiment of present invention, loam cake 11 is formed with upwardly extending tube 14 at through hole 13 places.In optional embodiment of the present invention, be with protection tube 7 in tube 14 outsides, the upper end of protection tube 7 extends upward above tube 14.Thus, tube 14 can play a protective role to lead 6 with protection tube 7.
Can be provided with plate on the circuit board 3 and carry the formula filter circuit, thereby prevent the interference of Electrostatic Discharge and Electromagnetic Compatibility, alternatively, on the circuit board 3 compensating circuit, amplifying circuit etc. can also be set.This can understand for those of ordinary skill in the art easily, is not described in detail here.
In examples more of the present invention, for example according to dissimilar cold-producing mediums, the first tube connector 4a and the second tube connector 4b can be copper pipe, stainless steel tube or aluminum pipe.
According to one embodiment of present invention, the outside of lead 6 can be with wire-protecting cover 8, and wire-protecting cover 8 can be processed by rubber, thereby guarantees connection stability.
Degree of superheat sensing device according to the embodiment of the invention; For example, through the variation of real-time measurement temperature and pressure, dope the current degree of superheat and feed back to the control system with current forms; Reasonable distribution is in the distribution of the ducted liquid refrigerant of different evaporators; Make air conditioning/refrigerating agent system can reach stable and the controlled degree of superheat, thereby ensure evaporator operation, can prevent that liquid refrigerant from getting into compressor/assurance refrigerant system operation simultaneously in efficient operating mode.Because the degree of superheat sensing device of the embodiment of the invention is through the variation of measuring temperature and pressure rather than measures certain temperature and pressure constantly and calculate the degree of superheat, receives environment and background influence littler, so certainty of measurement is high.
In addition, the degree of superheat sensing device structural complexity according to the embodiment of the invention reduces greatly.With respect to the mechanical type measurement mechanism, temperature and pressure transmitter and circuit board all are arranged in the valve body, need not the outside installation of pipeline, and volume reduces greatly.With respect to electronic measuring device, with the chip unification of temperature sensor and pressure sensor, volume also reduces greatly.Therefore, degree of superheat sensing device of the present invention is installed easier.
In addition, because the bulb of mechanical type measurement mechanism and the temperature sensor of electronic measuring device are installed in the system outside respectively, the value of measurement can change with the variation that connects the tubing material; Outer balance pipe and pressure sensor then are connected respectively to internal system, the measurement standard disunity.The degree of superheat sensing device of the embodiment of the invention adopts the temperature and pressure transmitter of the current signal that can measure the temperature and pressure and the output reflection degree of superheat simultaneously that is installed in internal system; Measured value stability is high; Measurement standard is unified, so certainty of measurement further improves.
And the bulb of mechanical type measurement mechanism uses capillary to connect, and easy blocking if the content leakage that fills can cause inefficacy, can cause wearing and tearing and carry out mechanical adjustment; And the temperature sensor of electronic measuring device is damaged by the installation environment humidity effect especially easily.In the embodiment of the invention, temperature and pressure transmitter is installed in internal system, and it is littler influenced by ambient humidity, so reliability is higher, the life-span is longer.For example, common sensor life-time is generally 2～3 years, and can reach 15 years the projected life of the temperature and pressure transmitter in the embodiment of the invention.
In sum owing to adopt the integral type temperature and pressure transmitter be installed in internal system, according to the degree of superheat sensing device of the embodiment of the invention have simple in structure, volume reduces, simple installation, reliability and precision improves, the life-span is long advantage.
In the description of this specification, the description of reference term " embodiment " or " another embodiment " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics described can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (10)
1. a degree of superheat sensing device is characterized in that, comprising:
Valve body, said valve body are limited with inner chamber and with first and second openings of inner chamber and external communications;
Lasso, said lasso are arranged in the said inner chamber said inner chamber is separated into upper cavity and lower chamber, wherein said lower chamber and said first and second open communication;
Circuit board, said circuit board are arranged in the said upper cavity;
First and second tube connectors, said first and second tube connectors link to each other with said first and second openings respectively;
Temperature and pressure transmitter, said temperature and pressure transmitter are arranged on the said lasso and with said circuit board and link to each other, and the bottom that said temperature and pressure transmitter passes said lasso extend in the said lower chamber and be isolated each other between upper cavity and the lower chamber; With
Lead, an end of said lead link to each other with said circuit board and the other end to extend to said valve body from upper cavity outside.
2. degree of superheat sensing device according to claim 1 is characterized in that said valve body comprises body and loam cake, and said loam cake is installed in the upper end of said body and is formed with the through hole that supplies said lead to pass.
3. degree of superheat sensing device according to claim 1 and 2 is characterized in that the upper end of said lasso is formed with flange, and said flange is connected between said loam cake and the said body and lasso links to each other with valve body through laser weld.
4. degree of superheat sensing device according to claim 2 is characterized in that said loam cake is formed with upwardly extending tube in said through hole.
5. according to claim 1 or 4 described degree of superheat sensing devices, it is characterized in that further comprise being enclosed within the outside protection tube of said tube, the upper end of said protection tube extends upward and surpasses said tube.
6. degree of superheat sensing device according to claim 1 is characterized in that, said first and second tube connectors and valve body are integrally formed.
7. degree of superheat sensing device according to claim 1 is characterized in that, said first and second tube connectors weld or are threaded onto on the said valve body.
8. degree of superheat sensing device according to claim 1 is characterized in that, said temperature and pressure transmitter is solder-connected on the said cover figure.
9. degree of superheat sensing device according to claim 1 is characterized in that the outside of said lead is with the wire-protecting cover.
10. degree of superheat sensing device according to claim 1 is characterized in that, an end of said lead links to each other with said circuit board through connect-disconnect structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010218791 CN102313413B (en) | 2010-07-05 | 2010-07-05 | Superheat-sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010218791 CN102313413B (en) | 2010-07-05 | 2010-07-05 | Superheat-sensing device |
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| Publication Number | Publication Date |
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| CN102313413A true CN102313413A (en) | 2012-01-11 |
| CN102313413B CN102313413B (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010218791 Expired - Fee Related CN102313413B (en) | 2010-07-05 | 2010-07-05 | Superheat-sensing device |
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| Country | Link |
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| CN (1) | CN102313413B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654025A (en) * | 2015-03-09 | 2015-05-27 | 四川蓝讯宝迩电子科技有限公司 | Device for monitoring underground pipeline |
| CN105865546A (en) * | 2015-01-23 | 2016-08-17 | 北京斯威尔工业测量仪器有限公司 | A solid flow meter installing structure |
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| US3727423A (en) * | 1969-12-29 | 1973-04-17 | Evans Mfg Co Jackes | Temperature responsive capacity control device |
| US4432492A (en) * | 1980-04-02 | 1984-02-21 | Emerson Electric Co. | Thermostatic expansion valve with remote adjustment |
| WO2005052471A1 (en) * | 2003-11-21 | 2005-06-09 | Parker-Hannifin Corporation | Dual restrictor shut-off valve |
| CN1834507A (en) * | 2005-03-16 | 2006-09-20 | 浙江三花制冷集团有限公司 | Thermal expansion valve for preventing high pressure medium transmission portion from leakage |
| CN101408554A (en) * | 2008-09-27 | 2009-04-15 | 上海第二工业大学 | Method for detecting flow speed with orientation selectivity by thermal balance |
| CN101762130A (en) * | 2008-12-24 | 2010-06-30 | 上海三电贝洱汽车空调有限公司 | Control valve |
| CN201697401U (en) * | 2010-07-05 | 2011-01-05 | 丹佛斯（天津）有限公司 | Superheat degree sensing device |
-
2010
- 2010-07-05 CN CN 201010218791 patent/CN102313413B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727423A (en) * | 1969-12-29 | 1973-04-17 | Evans Mfg Co Jackes | Temperature responsive capacity control device |
| US4432492A (en) * | 1980-04-02 | 1984-02-21 | Emerson Electric Co. | Thermostatic expansion valve with remote adjustment |
| WO2005052471A1 (en) * | 2003-11-21 | 2005-06-09 | Parker-Hannifin Corporation | Dual restrictor shut-off valve |
| CN1834507A (en) * | 2005-03-16 | 2006-09-20 | 浙江三花制冷集团有限公司 | Thermal expansion valve for preventing high pressure medium transmission portion from leakage |
| CN101408554A (en) * | 2008-09-27 | 2009-04-15 | 上海第二工业大学 | Method for detecting flow speed with orientation selectivity by thermal balance |
| CN101762130A (en) * | 2008-12-24 | 2010-06-30 | 上海三电贝洱汽车空调有限公司 | Control valve |
| CN201697401U (en) * | 2010-07-05 | 2011-01-05 | 丹佛斯（天津）有限公司 | Superheat degree sensing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865546A (en) * | 2015-01-23 | 2016-08-17 | 北京斯威尔工业测量仪器有限公司 | A solid flow meter installing structure |
| CN105865546B (en) * | 2015-01-23 | 2022-03-15 | 北京斯威尔工业测量仪器有限公司 | Solid flow meter mounting structure |
| CN104654025A (en) * | 2015-03-09 | 2015-05-27 | 四川蓝讯宝迩电子科技有限公司 | Device for monitoring underground pipeline |
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| CN102313413B (en) | 2013-10-16 |
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