CN102313413B - Superheat-sensing device - Google Patents
Superheat-sensing device Download PDFInfo
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- CN102313413B CN102313413B CN 201010218791 CN201010218791A CN102313413B CN 102313413 B CN102313413 B CN 102313413B CN 201010218791 CN201010218791 CN 201010218791 CN 201010218791 A CN201010218791 A CN 201010218791A CN 102313413 B CN102313413 B CN 102313413B
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- superheat
- sensing device
- valve body
- circuit board
- lasso
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Abstract
The invention relates to a superheat-sensing device, which comprises a valve body, a sleeve ring, a circuit board, a first connecting pipe, a second connecting pipe, a temperature and pressure sensor and a lead, wherein the valve body is provided with an inner cavity as well as a first opening and a second opening which are used for communicating the inner cavity and the outside; the sleeve ring is arranged in the inner cavity to divide the inner cavity into an upper cavity body and a lower cavity body which are mutually isolated, wherein the lower cavity body is communicated with the first opening and the second opening; the circuit board is arranged in the upper cavity body; the first connecting pipe and the second connecting pipe are respectively connected with the first opening and the second opening; the temperature and pressure sensor is connected with the circuit board and extends into the lower cavity body after penetrating through the bottom of the sleeve ring; and one end ofthe lead is connected with the circuit board, and the other end of the lead extends to the outer part of the valve body from the upper cavity body. The superheat-sensing device disclosed by the invention has the advantages of simple structure, reduction in size, convenience in installation, reliability and precision improvement and long service life.
Description
Technical field
The present invention relates to a kind of superheat-sensing device, especially relates to the 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 measurement device is measured the degree of superheat by the temperature-sensitive bag induced flow temperature of itself and by the outer balance pipe induction pressure, and feeds back by the mode that is converted into equilibrant force.The shortcoming of tradition Mechanical measurement device is that the temperature-sensitive bag is installed in the pipeline outside, the detection error is high, outer balance pipe is installed in pipeline inside, installation requirement is high, design difficulty is large, complex structure, volume are large, pipeline outside affected by environment large, that mechanical organ is easy to wear, complexity, maintenance difficult and life-span are revealed, mounted and dismounted to the fluid that fills easily is short.
Electronic measuring device is to measure respectively temperature and pressure by the independently temperature sensor that is installed to the pipeline outside and the independently pressure sensor that is installed to pipeline inside, and exports with programmable chip control.Therefore similarly, subelement is installed in the pipeline outside, and subelement is installed in pipeline inside, has equally complex structure, volume is large, temperature sensor damages easily, mount and dismount complexity, 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 superheat-sensing device in simple installation, reliability and precision improves, the life-span the is long refrigeration system.
Superheat-sensing device according to the embodiment of the invention comprises: valve body, described valve body are limited with inner chamber and with inner chamber and outside the first and second openings that are communicated with; Lasso, described lasso are arranged in the described inner chamber described inner chamber is separated into upper cavity and lower chamber, wherein said lower chamber and described the first and second open communication; Circuit board, described circuit board are arranged in the described upper cavity; The first and second tube connectors, described the first and second tube connectors link to each other with described the first and second openings respectively; Temperature and pressure transmitter, described temperature and pressure transmitter are arranged on the described lasso and with described circuit board and link to each other, and the bottom that described temperature and pressure transmitter passes described lasso extend in the described lower chamber and be isolated each other between upper cavity and the lower chamber; And wire, an end of described wire link to each other with described circuit board and the other end to extend to described valve body from described upper cavity outside.
Owing to adopt the temperature and pressure that to measure simultaneously cold-producing medium 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, the cavity of resorption that the epicoele at circuit board place and temperature and pressure transmitter stretch into seals isolated each other, therefore simple in structure according to the superheat-sensing device of the embodiment of the invention, volume reduces, simple installation, reliability and precision improves, the life-span is long.
In addition, superheat-sensing device according to the above embodiment of the present invention can also have following additional technical characterictic:
Described valve body comprises body and loam cake, and described loam cake is installed in the upper end of described body and is formed with the through hole that passes for described wire.
The upper end of described lasso is formed with flange, and described flange is connected between described loam cake and the described body and described lasso links to each other with valve body by laser weld.
Described loam cake is formed with upwardly extending tube in described through hole.
Superheat-sensing device according to the embodiment of the invention further comprises the protection tube that is enclosed within described tube outside, and the upper end of described protection tube extends upward and surpasses described tube.
Described the first and second tube connectors and valve body are integrally formed.
Described the first and second tube connectors weld or are threaded onto on the described valve body.
Described temperature and pressure transmitter is solder-connected on the described lasso.
The outer cover of described wire has the wire-protecting cover.
One end of described wire links to each other with described circuit board by connect-disconnect structure.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the structural representation according to the degree of superheat sensor device of the embodiment of the invention.
The specific embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, term " on ", orientation or the position relationship of the indication such as D score be based on orientation shown in the drawings or position relationship, only be for convenience of description the present invention rather than require the present invention with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
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, the degree of superheat sensor device according to the embodiment of the invention comprises: valve body 1, lasso 2, circuit board 3, the first tube connector 4a, the second tube connector 4b, temperature and pressure transmitter 5, and wire 6.
Be limited with inner chamber in the valve body 1 and with inner chamber and outside the first and second openings (left side among Fig. 1 and right openings) that are communicated with.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 lower chamber B and the 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 the 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 enter lower chamber B by the first opening from the first tube connector 4a, then discharges valve body from the second opening 4b by the second tube connector 4b.
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 by 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 to completely cut off between upper cavity A and the lower chamber B, 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 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 by 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 wire 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, wire 6 (for example quad) links to each other with the upper surface of circuit board 3, and for the ease of connecting and dismounting, wire 6 can link to each other with circuit board 3 by connect-disconnect structure.But the present invention is not limited to this, for example wire 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 is installed in the upper end of body 12 and top surface is formed with the through hole 13 that passes for wire 6.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 by laser weld, thereby can guarantee the bulk strength of superheat-sensing device and avoid leakage.In an example of the present invention, lasso 2 can be made by stainless steel.
As mentioned above, the flange of lasso 2 upper ends is connected between loam cake 11 and the body 12 by laser weld, thereby the inner chamber of valve body 1 is divided into the 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, by temperature and pressure transmitter 5 is linked to each other by laser welded seal ground with the bottom of lasso 2, thereby the isolated A of upper chamber and lower chambers B, avoid the cold-producing medium in the lower chambers B to enter in the A of upper chamber, therefore, the A of upper chamber also can be called be used to the element cavity that holds the various elements that comprise circuit board 3, lower chambers B can be called the measurement chamber, and the A of upper chamber and lower chambers B are isolated, prevent that fluid from entering in the A of upper chamber, damage circuit board 3 etc., and guaranteed the normal detection of temperature and pressure transmitter 5, and prevent fluid leakage in the first and second tube connectors 4 in compressor, thereby guarantee that refrigeration system normally moves; Simultaneously, can guarantee bulk strength according to the 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, in tube 14 outer cover protection tube 7 is arranged, the upper end of protection tube 7 extends upward above tube 14.Thus, tube 14 and protection tube 7 can play a protective role to wire 6.
Can be provided with plate on the circuit board 3 and carry the formula filter circuit, thereby prevent the interference of static discharge (ESD) and Electro Magnetic Compatibility (EMC), alternatively, on the circuit board 3 compensating circuit, amplifying circuit etc. can also be set.This is to hold intelligiblely for the ordinary skill in the art, 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 wire 6 can be overlapped wire-protecting cover 8, and wire-protecting cover 8 can be made by rubber, thereby guarantees the stability of connection.
Superheat-sensing device according to the embodiment of the invention, for example, variation by Real-time Measuring amount temperature and pressure, dope the current degree of superheat and feed back to 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 in efficient operating mode, can prevent that liquid refrigerant from entering compressor/assurance refrigerant system operation simultaneously.Because the superheat-sensing device of the embodiment of the invention is by the variation of measuring temperature and pressure rather than measures certain temperature and pressure constantly and calculate the degree of superheat, is subjected to environment and background influence less, so certainty of measurement is high.
In addition, the superheat-sensing device structural complexity according to the embodiment of the invention reduces greatly.With respect to the Mechanical measurement device, 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, superheat-sensing device of the present invention is installed easier.
In addition, because the temperature-sensitive bag of Mechanical measurement device and the temperature sensor of electronic measuring device are installed in respectively the system outside, 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 superheat-sensing device of the embodiment of the invention adopts the temperature and pressure transmitter of the current signal that can measure simultaneously temperature and pressure and the output reflection degree of superheat that is installed in internal system, measured value stability is high, measurement standard is unified, so certainty of measurement further improves.
And the temperature-sensitive bag of Mechanical measurement device uses capillary to connect, and stops up easily, 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 less affected 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 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 to be contained at least one embodiment of the present invention or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And specific features, structure, material or the characteristics described can be with suitable mode combinations 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: can carry out multiple variation, modification, replacement and modification to these embodiment in the situation that does not break away from principle of the present invention and aim, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a superheat-sensing device is characterized in that, comprising:
Valve body, described valve body are limited with inner chamber and with inner chamber and outside the first and second openings that are communicated with;
Lasso, described lasso are arranged in the described inner chamber described inner chamber is separated into upper cavity and lower chamber, wherein said lower chamber and described the first and second open communication;
Circuit board, described circuit board are arranged in the described upper cavity;
The first and second tube connectors, described the first and second tube connectors link to each other with described the first and second openings respectively;
Temperature and pressure transmitter, described temperature and pressure transmitter are arranged on the described lasso and with described circuit board and link to each other, and the bottom that described temperature and pressure transmitter passes described lasso extend in the described lower chamber and be isolated each other between upper cavity and the lower chamber; With
Wire, an end of described wire link to each other with described circuit board and the other end to extend to described valve body from upper cavity outside.
2. superheat-sensing device according to claim 1 is characterized in that, described valve body comprises body and loam cake, and described loam cake is installed in the upper end of described body and is formed with the through hole that passes for described wire.
3. superheat-sensing device according to claim 2 is characterized in that, the upper end of described lasso is formed with flange, and described flange is connected between described loam cake and the described body and lasso links to each other with valve body by laser weld.
4. superheat-sensing device according to claim 2 is characterized in that, described loam cake is formed with upwardly extending tube in described through hole.
5. superheat-sensing device according to claim 4 is characterized in that, further comprises the protection tube that is enclosed within described tube outside, and the upper end of described protection tube extends upward and surpasses described tube.
6. superheat-sensing device according to claim 1 is characterized in that, described the first and second tube connectors and valve body are integrally formed.
7. superheat-sensing device according to claim 1 is characterized in that, described the first and second tube connectors weld or are threaded onto on the described valve body.
8. superheat-sensing device according to claim 1 is characterized in that, described temperature and pressure transmitter is solder-connected on the described lasso.
9. superheat-sensing device according to claim 1 is characterized in that, the outer cover of described wire has the wire-protecting cover.
10. superheat-sensing device according to claim 1 is characterized in that, an end of described wire links to each other with described circuit board by 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102313413A CN102313413A (en) | 2012-01-11 |
| CN102313413B true 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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| CN (1) | CN102313413B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
-
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 |
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| Publication number | Publication date |
|---|---|
| CN102313413A (en) | 2012-01-11 |
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