CN104111125B - Temperature sensor and temperature regulator - Google Patents
Temperature sensor and temperature regulator Download PDFInfo
- Publication number
- CN104111125B CN104111125B CN201410381311.7A CN201410381311A CN104111125B CN 104111125 B CN104111125 B CN 104111125B CN 201410381311 A CN201410381311 A CN 201410381311A CN 104111125 B CN104111125 B CN 104111125B
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- push rod
- temperature
- temperature sensor
- gear
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Abstract
The invention relates to a temperature sensor and a temperature regulator. The temperature sensor comprises a metal shell, a piston is arranged in the metal shell and divides the metal shell into a first cavity and a second cavity which are separated from each other, the second cavity is filled with temperature-sensing paraffin, a push rod is arranged in the first cavity, and the push rod passes through the first cavity to extend out of the metal shell. By means of the expansion and contraction of the temperature-sensing paraffin, the volume is changed under a cold or hot state, and the volume change of the temperature-sensing paraffin is converted into displacement change of the push rod to output. The temperature sensor and the temperature regulator use physical principles and mechanical devices, are rarely influenced by the inside and outside environments and are difficult to be damaged.
Description
Technical field
The present invention relates to a kind of temperature sensor and thermoregulator.
Background technology
Current temperature sensor, majority is the electric conductivity using thermo-sensitive materials such as PCT, and it depends on the resistance pair of material
The sensitivity of temperature；Another kind be using infrared ray or electromagnetic wave measurement temperature, but its can only Measuring Object surface temperature, and survey
The accuracy of amount is affected by environment larger；Also one kind is glass mercury temperature sensor, and this temperature sensor is fragile, and
Can volatilize toxic gas after damage, pollute environment.
The content of the invention
The present invention provides a kind of temperature sensor and thermoregulator, to solve above-mentioned technical problem.
To solve above-mentioned technical problem, the present invention provides a kind of temperature sensor, including metal shell, the metal shell
Inside it is provided with a piston, the metal shell is divided into mutually isolated first chamber and second chamber by the piston, described second
Within the chamber is filled with temperature-sensitive paraffin, and push rod is provided with the first chamber, and the push rod stretches out described through the first chamber
Metal shell.
It is preferred that being mixed with metal dust in the temperature-sensitive paraffin.
It is preferred that one end of the push rod is fixed with position limiting slide block, the position limiting slide block is limited in the first chamber,
And can slide along straight line direction.
It is preferred that the position limiting slide block is provided with some flow orifices.
It is preferred that filled with oil or water in the first chamber.
It is preferred that one end that the push rod stretches out the metal shell is connected with force transfering device.
It is preferred that the force transfering device is ball screw.
It is preferred that the ball screw includes push rod, sleeve and ball, the push rod outside is led with the first spiral
Rail, the sleeve inner side carries the second helical guideway, and first helical guideway and the second helical guideway constitute complete track,
The ball is limited in the track, and the push rod is fixedly connected with one end of the push rod.
It is preferred that also including second gear and the 3rd gear, the cartridge exterior carries first gear, the first gear
Engage respectively with second gear, the 3rd gear, the second gear is connected with thermometer dial plate；3rd gear and valve phase
Even.
Present invention also offers a kind of thermoregulator, including controlling baffle plate, conical gear and temperature as above
Sensor, the temperature sensor is installed in the container for filling liquid, and the input shaft of the conical gear is passed with the temperature
The push rod of sensor is connected, and the output shaft of the conical gear is connected with the controlling baffle plate, the position of the controlling baffle plate and institute
The outlet correspondence of container is stated, the controlling baffle plate is provided with tap hole.
Compared with prior art, the temperature sensor that the present invention is provided has the advantage that：
1. the temperature sensor that the present invention is provided can be used without the need for extra power source in the case of without electricity；
2. can be with used in the conducting solutions such as water or closed adverse circumstances；
3. measurement temperature accurately, is not affected, such as by internal and external environment：Weather, dust etc.；
4. temperature survey is realized using the physical principle and machinery of material, be hardly damaged, long service life.
Description of the drawings
Fig. 1 is the structural representation of the temperature sensor of the embodiment of the invention；
Fig. 2 for the embodiment of the invention temperature sensor in ball screw structural representation；
Fig. 3 is the structural representation of the thermoregulator of the embodiment of the invention.
In figure：10- temperature sensors, 11- metal shells, 12- pistons, 13- temperature-sensitive paraffin, 14- oil or water, 15- push rods,
16- position limiting slide blocks, 17- flow orifices；
20- ball screws, 21- push rods, 22- sleeves, 23- balls；
30- conical gears, 40- controlling baffle plates, 41- tap holes, 50- containers, 51- outlets.
Specific embodiment
For the technical scheme for stating foregoing invention more in detail, being exemplified below specific embodiment proves that technology is imitated
Really；It is emphasized that these embodiments are used to illustrate the present invention and be not limited to limit the scope of the present invention.
The temperature sensor 10 that the present invention is provided, as shown in figure 1, including metal shell 11, the metal shell 11 is interior to be set
There is a piston 12,11 points of the metal shell is mutually isolated first chamber and second chamber by the piston 12, described the
Two within the chambers are filled with temperature-sensitive paraffin 13, and push rod 15 is provided with the first chamber, and the push rod 15 passes through the first chamber
Stretch out the metal shell 11.In the present embodiment, the metal shell 11 is copper pipe, when ambient temperature changes, the temperature-sensitive
Paraffin 13 is expanded due to principle of expanding with heat and contracting with cold when being heated, and is extruded from promotion piston 12 to the direction of first chamber, and the first chamber
Indoor pressure increase, so as to promote push rod 15 to slide in and out；Upon a drop in temperature, the volume-diminished of temperature-sensitive paraffin 13, whole gold
The atmospheric pressure in the outside of category shell 11 promotes the slid inward of push rod 16, while promoting direction activity of the piston 12 to second chamber.
It should be noted that due to the intrinsic physical expansion characteristic of material, temperature change and the displacement of the push rod 15, having
Clear and definite linear relationship.
The thermal cubic expansion coefficient formula of object is as follows：
And the thermal cubic expansion coefficient of paraffin is 0.76 (10-3/ K), i.e., temperature often changes 1 DEG C, change in volume 0.76 × 10-3。
Specifically, the main component of the temperature-sensitive paraffin 13 is alkane, with temperature change produce volume change be by
Intermolecular distance change causes, and isoparaffin expansion rate is generally below with the n-alkane of carbon number, because paraffin has in phase
The big characteristic of change in volume during change, so obtaining required phase transformation usually through the allotment of the different paraffin of several fusing points
The temperature-sensitive paraffin 13 of temperature range.
It is preferred that in order to strengthen sensitivity of the temperature-sensitive paraffin 13 to heat transfer, metal can be added in temperature-sensitive paraffin 13
Powder, such as copper powders, although the addition of metal dust has certain impact on the expansion rate of paraffin composite, but will not change stone
The expansion characteristics of wax composite.
Please emphasis refer to Fig. 1, in the present embodiment, the metal shell 11 be columned housing, the length of first chamber
For l, the length of second chamber is L, a diameter of D, then the initial volume V of temperature-sensitive paraffin 130For (D/2)2× π × L, when the sense
During fire stons 13 expanded by heating of wax, radius D/2 cannot change, so the change of volume shows as the change of length L of second chamber
Change.If length L for loading temperature-sensitive paraffin 13 in metal shell 11 is 100mm, when change in volume 1%, its length change △ L is
1mm。
It is preferred that in order that above-mentioned length change △ L becomes apparent from, inner cylinder structure can be added, i.e., described
Filling oil or water 14 in first chamber, due to the volume of left side oil or water 14 in figure be acted upon by temperature changes it is less, with temperature-sensitive
Paraffin 13 is compared, negligible, therefore, the change in volume of temperature-sensitive paraffin 13 is first converted into the length change △ L of second chamber,
The length change △ l being eventually converted in the extended or retracted first chamber of push rod 15, so according to equation below when L changes：
(D/2)2× π × △ L=(d/2)2× π × △ l, wherein d are the diameter of push rod 15,
Obtain △ l/ △ L=(D/d)2, that is to say, that when the diameter d of push rod 15 is the 1/5 of the diameter D of metal shell 11
When, the displacement energy of push rod 15 amplifies the expansion displacement change that 25 times, i.e. temperature-sensitive paraffin 13 occur 1mm, is transferred on push rod 15
Change in displacement is 25mm.
Although the Percent expansion at different temperatures of temperature-sensitive paraffin 13 is inconsistent, the expansion rate of its different temperatures
It is changeless, you can to realize the specific displacement of specific temperature correspondence, and due to the amplification of displacement, the sensitivity to temperature
Degree increases.
It is preferred that please continue to refer to Fig. 1, one end of the push rod 15 is fixed with position limiting slide block 16, the position limiting slide block 16
It is limited in the first chamber, and can slides along straight line direction so that push rod 15 can successfully in first chamber
Inside linearly slide, it is preferred that the position limiting slide block 16 is provided with some flow orifices 17, it is to avoid position limiting slide block 16 is first
After within the chamber is slided, cause the pressure of the both sides of position limiting slide block 16 different, and then affect the accuracy of temperature sensor.
It is preferred that one end that the push rod 15 stretches out the metal shell 11 is connected with force transfering device, with not equality of temperature
Other power transfer modes such as torsion or horizontal displacement are changed in the different straight-line displacement produced under the influence of degree, so as to realize each
Function.In the present embodiment, the force transfering device is ball screw 20, asks emphasis to refer to Fig. 2, and the ball screw 20 includes top
Bar 21, sleeve 22 and ball 23, the outside of the push rod 21 carries the first helical guideway, and the inner side of the sleeve 22 carries the second spiral shell
Rotation guide rail, first helical guideway and the second helical guideway constitute complete track, and the ball 23 is limited in the track
Interior, the push rod 15 is fixedly connected with one end of the push rod 21.Specifically, the straight line fortune of the push rod 21 with the first helical guideway
Dynamic to drive ball 23 to rotate in orbit, so as to band moving sleeve 22 rotates, and sleeve 22 is in rotary course
Middle holding position is constant, so as to realize the change of motion mode, linear motion, changes into rotary motion.
It is preferred that sleeve 22 can also connect second gear and the 3rd gear, specifically, the outside of the sleeve 22 is with the
One gear, the first gear is engaged respectively with second gear, the 3rd gear, and the second gear is connected with thermometer dial plate,
Under turning effort, the temperature of testee can be in real time watched；3rd gear is connected with valve, and the valve is control
With adjusting means, at different temperatures, the automatic control of temperature with the closing of automatic regulating switch size or switch, can be realized
System.Certainly, the push rod 21 can be directly connected to temperature protection switch, and when dut temperature reaches dangerous temperature, push rod 21 is along straight
Line is moved, and promotes temperature protection switch, makes down circuitry, is shielded.
Present invention also offers a kind of thermoregulator, asks emphasis to refer to Fig. 3, including controlling baffle plate 40, conical gear 30
And temperature sensor 10 as above, the temperature sensor 10 is installed in the container 50 for filling liquid, the circular cone
The input shaft of gear 30 is connected with the push rod 15 of the temperature sensor 10, the output shaft of the conical gear 30 and the control
Baffle plate 40 is connected, and the position of the controlling baffle plate 40 is corresponding with the outlet 51 of the container 50, sets in the controlling baffle plate 40
There is tap hole 41.The temperature sensor 10 is installed in the container 50 for filling liquid, when the temperature of liquid in container 50 occurs
During change, there is the displacement of vertical direction in the push rod 15 of temperature sensor 10, in the presence of conical gear 30, by vertical direction
Motion conversion displacement horizontally, and then promote controlling baffle plate 40 to move, when the tap hole 41 in controlling baffle plate 40 with
The outlet 51 of the container 50 just could pass through to the liquid in container 50 during correspondence, that is to say, that can only be in specified temp
In the range of, liquid could pass through, it is allowed to the range wide W=W1+W2 for passing through, wherein, W1 is the width of tap hole 41, and W2 is
The width at the mouth of a river 51, so as to realize intelligentized temperature control, can be used to implement under protection or special environment.
In sum, the present invention is provided temperature sensor and thermoregulator, the temperature sensor 10 includes metal
A piston 12 is provided with shell 11, the metal shell 11,11 points by the metal shell of the piston 12 is mutually isolated
Temperature-sensitive paraffin 13 is filled with first chamber and second chamber, the second chamber, push rod 15, institute are provided with the first chamber
State push rod 15 and stretch out the metal shell 11 through the first chamber.The present invention utilizes the original of expanding with heat and contract with cold of temperature-sensitive paraffin 13
Reason, when catching a cold or being heated, volume produces change, and most at last the change in volume of temperature-sensitive paraffin 13 is converted into the displacement of push rod 15
Change is exported, and the present invention is not affected using Material Physics principle and machinery by internal and external environment, and not rapid wear
It is bad.
Obviously, those skilled in the art can carry out the spirit of various changes and modification without deviating from the present invention to invention
And scope.So, if these modifications of the present invention and modification belong to the claims in the present invention and its equivalent technologies scope it
Interior, then the present invention is also intended to including including these changes and modification.
Claims (8)
1. a kind of temperature sensor, it is characterised in that including metal shell, is provided with a piston, the work in the metal shell
Plug is divided into the metal shell in mutually isolated first chamber and second chamber, the second chamber filled with temperature-sensitive stone
Wax, is provided with push rod in the first chamber, the push rod stretches out the metal shell through the first chamber, the push rod
One end is fixed with position limiting slide block, and the position limiting slide block is limited in the first chamber, and can slide along straight line direction,
The position limiting slide block is provided with some flow orifices.
2. temperature sensor as claimed in claim 1, it is characterised in that be mixed with metal dust in the temperature-sensitive paraffin.
3. temperature sensor as claimed in claim 1, it is characterised in that filled with oil or water in the first chamber.
4. temperature sensor as claimed in claim 1, it is characterised in that the push rod stretch out one end of the metal shell with
Force transfering device is connected.
5. temperature sensor as claimed in claim 4, it is characterised in that the force transfering device is ball screw.
6. temperature sensor as claimed in claim 5, it is characterised in that the ball screw includes push rod, sleeve and rolling
Pearl, the push rod outside carries the first helical guideway, and the sleeve inner side carries the second helical guideway, first helical guideway
Complete track is constituted with the second helical guideway, the ball is limited in the track, the push rod and the one of the push rod
End is fixedly connected.
7. temperature sensor as claimed in claim 6, it is characterised in that also including second gear and the 3rd gear, the set
Cylinder is outside to carry first gear, and the first gear is engaged respectively with second gear, the 3rd gear, the second gear and temperature
Instrumental panel is connected；3rd gear is connected with valve.
8. a kind of thermoregulator, it is characterised in that including controlling baffle plate, conical gear and as arbitrary in claim 1～7
Temperature sensor described in, the temperature sensor is installed in the container for filling liquid, the input shaft of the conical gear
It is connected with the push rod of the temperature sensor, the output shaft of the conical gear is connected with the controlling baffle plate, the control gear
The position of plate is corresponding with the outlet of the container, and the controlling baffle plate is provided with tap hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381311.7A CN104111125B (en) | 2014-08-05 | 2014-08-05 | Temperature sensor and temperature regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381311.7A CN104111125B (en) | 2014-08-05 | 2014-08-05 | Temperature sensor and temperature regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104111125A CN104111125A (en) | 2014-10-22 |
| CN104111125B true CN104111125B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410381311.7A Active CN104111125B (en) | 2014-08-05 | 2014-08-05 | Temperature sensor and temperature regulator |
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| CN106153210B (en) * | 2016-08-16 | 2019-02-15 | 国网江苏省电力公司镇江供电公司 | Close conductor conductor joint heating monitoring device |
| CN106225940A (en) * | 2016-08-24 | 2016-12-14 | 常州市武进南夏墅苏南锻造有限公司 | Temperature sensing device |
| CN106768434A (en) * | 2016-11-28 | 2017-05-31 | 新奥泛能网络科技股份有限公司 | A kind of thermoelectricity detection means |
| CN110873610A (en) * | 2018-09-03 | 2020-03-10 | 宁波方太厨具有限公司 | Device for measuring temperature in equipment cavity |
| CN110440941B (en) * | 2019-07-06 | 2024-02-02 | 长沙米粒智能科技有限责任公司 | Temperature measuring device and constant-pressure medium container thereof |
| CN110440942B (en) * | 2019-07-06 | 2024-01-26 | 长沙米粒智能科技有限责任公司 | Temperature measuring device |
| CN110440943B (en) * | 2019-07-06 | 2021-04-13 | 长沙米粒智能科技有限责任公司 | Temperature measuring method |
| CN111053420A (en) * | 2019-12-03 | 2020-04-24 | 马亦凡 | Anti-scald cup |
| CN111562024B (en) * | 2020-05-21 | 2021-04-13 | 中国人民解放军国防科技大学 | Transient high-temperature field heat flux measuring device and method based on memory alloy |
| CN112414577B (en) * | 2020-11-18 | 2021-05-04 | 江苏华彤建设工程有限公司 | Intelligence bus duct temperature rise monitored control system |
| CN113854129A (en) * | 2021-08-06 | 2021-12-31 | 杭州中艺生态环境工程有限公司 | Environment-friendly water-saving irrigation system for nursery stocks in desertification regions |
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| CN104111125A (en) | 2014-10-22 |
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