CN201697401U - Superheat degree sensing device - Google Patents
Superheat degree sensing device Download PDFInfo
- Publication number
- CN201697401U CN201697401U CN2010202491170U CN201020249117U CN201697401U CN 201697401 U CN201697401 U CN 201697401U CN 2010202491170 U CN2010202491170 U CN 2010202491170U CN 201020249117 U CN201020249117 U CN 201020249117U CN 201697401 U CN201697401 U CN 201697401U
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- Prior art keywords
- degree
- sensing device
- circuit board
- lasso
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004891 communication Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a superheat degree sensing device, which comprises a valve, a loop, a circuit board, a first connecting pipe, a second connecting pipe, a temperature pressure sensor and a conductor. The valve defines an inner cavity, a first opening and a second opening, the inner cavity is communicated with outside through the first opening and the second opening, the loop disposed inside the inner cavity divides the inner cavity into an upper cavity and a lower cavity which are separated from each other, the lower cavity is communicated with the first opening and the second opening, the circuit is disposed inside the upper cavity, the first connecting pipe and the second connecting pipe are respectively connected with the first opening and the second opening, the temperature pressure sensor connected with the circuit board penetrates through the bottom of the loop to extend into the lower cavity, and one end of the conductor is connected with the circuit board while the other end extends out of the valve from the upper cavity. The superheat degree sensing device has the advantages of simple structure, volume reduction, simple installation, increased reliability and precision and long service life.
Description
Technical field
The utility model 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 by the temperature-sensitive bag induction fluid temperature (F.T.) 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 type measurement mechanism is that the temperature-sensitive bag is installed in the pipeline outside, detection error height, outer balance pipe is installed in pipeline inside, the installation requirement height, design difficulty is big, complex structure, volume are big, pipeline outside affected by environment big, 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 temperature and pressure respectively by 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 complex structure equally, volume is big, temperature sensor damages easily, mount and dismount complexity, maintenance difficult and short shortcoming of life-span.
The utility model content
The utility model is intended to solve at least one of technical problem that exists in the prior art.For this reason, a purpose of the present utility model 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 utility model embodiment comprises: valve body, described valve body are limited with inner chamber and with first and second openings of inner chamber and external communications; 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 first and second open communication; Circuit board, described circuit board are arranged in the described upper cavity; First and second tube connectors, described first and second tube connectors link to each other with described 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 lead, an end of described lead links to each other with described circuit board and the other end extends to described valve body outside from described upper cavity.
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, the cavity of resorption that the epicoele at circuit board place and temperature and pressure transmitter stretch into seals isolated each other, and is therefore simple in structure according to the degree of superheat sensing device of the utility model embodiment, volume reduces, simple installation, reliability and precision improves, the life-span is long.
In addition, the degree of superheat sensing device according to the utility model the foregoing description 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 lead.
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.
Degree of superheat sensing device according to the utility model embodiment 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 first and second tube connectors and valve body are integrally formed.
Described 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 outside of described lead is with the wire-protecting cover.
One end of described lead links to each other with described circuit board by connect-disconnect structure.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model 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 utility model embodiment.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described 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.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, term " on ", close the orientation of indication such as D score or position is based on orientation shown in the drawings or position relation, it only is the utility model rather than require the utility model therefore can not be interpreted as for convenience of description with specific orientation structure and operation to restriction of the present utility model.
Fig. 1 is the structural representation according to the degree of superheat sensor device of the utility model embodiment.As shown in Figure 1, the degree of superheat sensor device according to the utility model embodiment 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 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 embodiment more of the present utility model, 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 first opening from the first tube connector 4a, discharges valve body from the second opening 4b by 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 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 embodiment more of the present utility model, 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 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 an embodiment of the present utility model, 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 by connect-disconnect structure.But the utility model is not limited to this, for example lead 6 also can with circuit board 3 direct solderings.
According to an embodiment of the present utility model, valve body 1 comprises body 12 and loam cake 11, and valve body 1 is formed by stainless steel (SS) punching press.According to an embodiment of the present utility model, upper end and top surface that loam cake 11 is installed in body 12 are formed with the through hole 13 that passes for lead 6.In an example of the present utility model, 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 degree of superheat sensing device and avoid leakage.In an example of the present utility model, 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 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 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 the element cavity that is used to hold the various elements that comprise circuit board 3, lower chambers B can be called the measurement chamber, and 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 that the fluids in first and second tube connectors 4 are leaked in the compressor, thereby guarantee that refrigeration system normally moves; Simultaneously, can guarantee bulk strength according to the degree of superheat sensing device of the utility model embodiment.
According to an embodiment of the present utility model, loam cake 11 is formed with upwardly extending tube 14 at through hole 13 places.In optional embodiment of the present utility model, be with protection tube 7 in tube 14 outsides, 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 lead 6.
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 the ordinary skill in the art easily, is not described in detail here.
In examples more of the present utility model, 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 an embodiment of the present utility model, the outside of lead 6 can be with wire-protecting cover 8, and wire-protecting cover 8 can be made by rubber, thereby guarantees connection stability.
Degree of superheat sensing device according to the utility model embodiment, for example, variation by real-time measurement 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, can prevent that liquid refrigerant from entering compressor/assurance refrigerant system operation simultaneously in efficient operating mode.Because the degree of superheat sensing device of the utility model embodiment 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 littler, so the certainty of measurement height.
In addition, the degree of superheat sensing device structural complexity according to the utility model embodiment 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 utility model is installed easier.
In addition, because the temperature-sensitive bag 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 utility model embodiment 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 temperature-sensitive bag of mechanical type measurement mechanism 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.Among the utility model embodiment, 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 among the utility model embodiment.
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 utility model embodiment have simple in structure, volume reduces, simple installation, reliability and precision improves, the life-span is long advantage.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment " or " another embodiment " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present utility model or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics described can be with the suitable manner combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. a degree of superheat sensing device is characterized in that, comprising:
Valve body, described valve body are limited with inner chamber and with first and second openings of inner chamber and external communications;
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 first and second open communication;
Circuit board, described circuit board are arranged in the described upper cavity;
First and second tube connectors, described first and second tube connectors link to each other with described 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
Lead, an end of described lead links to each other with described circuit board and the other end extends to described valve body outside from upper cavity.
2. degree of 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 lead.
3. degree of superheat sensing device according to claim 1 and 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. degree of 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. according to claim 1 or 4 described degree of superheat sensing devices, it is characterized in that, further comprise the protection tube that is enclosed within described tube outside, the upper end of described protection tube extends upward and surpasses described tube.
6. degree of superheat sensing device according to claim 1 is characterized in that, described 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, described first and second tube connectors weld or are threaded onto on the described valve body.
8. degree of superheat sensing device according to claim 1 is characterized in that described temperature and pressure transmitter is solder-connected on the described lasso.
9. degree of superheat sensing device according to claim 1 is characterized in that the outside of described lead is with the wire-protecting cover.
10. degree of superheat sensing device according to claim 1 is characterized in that, an end of described lead links to each other with described circuit board by connect-disconnect structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202491170U CN201697401U (en) | 2010-07-05 | 2010-07-05 | Superheat degree sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202491170U CN201697401U (en) | 2010-07-05 | 2010-07-05 | Superheat degree sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697401U true CN201697401U (en) | 2011-01-05 |
Family
ID=43398648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202491170U Expired - Lifetime CN201697401U (en) | 2010-07-05 | 2010-07-05 | Superheat degree sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313413A (en) * | 2010-07-05 | 2012-01-11 | 丹佛斯（天津）有限公司 | Degree of superheat sensing device |
| CN104458032A (en) * | 2014-12-08 | 2015-03-25 | 苏州创泰电子有限公司 | Superheat degree measurement method and device |
-
2010
- 2010-07-05 CN CN2010202491170U patent/CN201697401U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313413A (en) * | 2010-07-05 | 2012-01-11 | 丹佛斯（天津）有限公司 | Degree of superheat sensing device |
| CN102313413B (en) * | 2010-07-05 | 2013-10-16 | 丹佛斯（天津）有限公司 | Superheat-sensing device |
| CN104458032A (en) * | 2014-12-08 | 2015-03-25 | 苏州创泰电子有限公司 | Superheat degree measurement method and device |
| CN104458032B (en) * | 2014-12-08 | 2017-10-17 | 苏州创泰电子有限公司 | Degree of superheat measuring method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20131016 |
|
| RGAV | Abandon patent right to avoid regrant |