CN201327417Y - Heat flow sensor with temperature compensation - Google Patents
Heat flow sensor with temperature compensation Download PDFInfo
- Publication number
- CN201327417Y CN201327417Y CNU2008201791236U CN200820179123U CN201327417Y CN 201327417 Y CN201327417 Y CN 201327417Y CN U2008201791236 U CNU2008201791236 U CN U2008201791236U CN 200820179123 U CN200820179123 U CN 200820179123U CN 201327417 Y CN201327417 Y CN 201327417Y
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- heat sink
- sink body
- constantan
- lead
- heat
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Abstract
The utility model discloses a heat flow sensor with temperature compensation, comprising a constantan round foil piece of which one surface is black and a heat sink body, and is characterized in that the heat sink body is a cylindrical body with a hollow internal portion, the material is oxygen-free copper, the constantan round foil piece is arranged above the heat sink body, the periphery is welded with the heat sink body, a constantan foil piece down-lead made of oxygen-free copper is led out of the back face center of the constantan round foil piece, a heat sink body lead is led from the heat sink body, and the material of the heat sink body lead is the constantan material which is same with the constantan foil piece. Because in the utility model the lead material of the heat sink body is the same with the material of the constantan foil piece, the existence of electrical potential V3 between the heat sink body and the lead compensates lower output signals caused by temperature rising of the heat sink body in the measuring process, the heat flow sensor can accurately and thermally radiate the intensity, the device has simple equipment, the use is convenient, and the application is broad.
Description
Technical field
The utility model belongs to the heat flow measurement technical field, is specifically related to a kind of heat flux sensor with temperature compensation.
Background technology
Heat flux sensor is mainly used in the measurement of hot-fluid in the measurement of environment caloradiance, the Energy Saving Control, both can carry out radiant heat flux and measure, and also can comprise the measurement of total hot-fluid of radiation, convection current.Traditional hot flow sensor theory structure as shown in Figure 1, this principle heat flux sensor is called GARDON meter (Gordon's meter) again.It is made up of the constantan of surperficial blacking circle paillon foil and heat sink body, and heat sink body material is an oxygen-free copper, and constantan circle paillon foil periphery contacts with heat sink body, justifies at constantan and draws copper conductor respectively on the center, the back side of paillon foil and the heat sink body and export as signal.
The round paillon foil of the constantan of surface blacking can produce temperature rise after absorbed radiation heat and advection heat, contact with heat sink body because of around it, and the heat that constantan circle paillon foil absorbs just can be to conduction all around, and constantan circle paillon foil center produces the temperature difference with the periphery meeting.According to theoretical derivation, after constantan circle foil thickness, diameter were determined, this temperature difference was directly proportional with the hot-fluid that the circle paillon foil absorbs, and establishing round paillon foil central temperature is T
1, heat sink body temperature degree is T
2, the thermopair heat outputting electromotive force that copper conductor of drawing from circle paillon foil center and constantan circle paillon foil form is V
1, constantan circle paillon foil periphery is V with the heat outputting electromotive force of the thermopair that heat sink body (copper) forms
2, these two thermopairs are because negative pole joins, and output signal is the poor of two hot thermocouple electromotive forces, and this signal is proportional to T
1-T
2, that is be proportional to measured hot-fluid q.Equivalent electrical circuit as shown in Figure 2.
V＝V
1-V
2 (1)
So, the output of this type heat flux sensor promptly corresponding the size of tested hot-fluid, obtain can measuring calculating according to following formula after the sensitivity constant C through the heat flux sensor of calibration:
q＝C·V (2)
In the formula: q-measures hot-fluid;
The C-sensitivity constant;
The output of V-temperature difference heat galvanic couple thermoelectrical potential.
Above-mentioned situation is an ideal situation, is the working condition of the type sensor under the invariable situation of the heat sink body temperature degree of hypothesis heat flux sensor.In real work, the temperature of heat sink body can not be invariable, generally can raise along with the increase of Measuring Time, like this V
2Value can become greatly V=V along with the increase of Measuring Time
1-V
2Value then can reduce, i.e. output can diminish.This just means, under the constant situation of tested hot-fluid, along with the increase of Measuring Time, the temperature of heat sink body can constantly rise, and causes the heat flux sensor output signal to descend, and produces temperature and floats.Sensor output signal situation of change synoptic diagram, as shown in Figure 3.
Above-mentioned defective at the heat flux sensor existence, can solve by heat sink body is carried out thermostatic control, the water-cooled heat flux sensor promptly is this scheme, but in some application scenario, the use of water-cooled heat flux sensor is not very suitable, and reason is to provide the constant temperature chilled water not very convenient for sensor.
The utility model content
For solve heat flux sensor in measuring process owing to there being the result's problem less than normal that records that causes that temperature wafts, correctly measure hot-fluid, the utility model proposes a kind of heat flux sensor with temperature compensation.
Realize the technical scheme of above-mentioned purpose: a kind of heat flux sensor with temperature compensation, this device comprises the constantan circle paillon foil and the heat sink body of a surperficial blacking, heat sink body is the right cylinder of inner hollow, its material is an oxygen-free copper, constantan circle paillon foil is located at the top and periphery and the welding of heat sink body of heat sink body, draw the constantan paillon foil lead-in wire that a root timber material is an oxygen-free copper in the center, the back side of constantan circle paillon foil, on heat sink body, draw a heat sink body lead.Wherein, the material of heat sink body lead is the constantan material identical with the constantan paillon foil.
Described heat sink body lead is drawn from the bottom of heat sink body.
The beneficial effects of the utility model: (1) since in the utility model the lead material of heat sink body identical with the material of constantan paillon foil, even therefore heat sink body has the intensification phenomenon to occur in measuring process, but because many heat sink bodies and go between between electromotive force V
3Existence offset electromotive force V
2Rising, so this heat flux sensor can reflect the thermal-radiating intensity of environment exactly.(2) this appliance arrangement is simple, easy to use, the application scenario is wide.
Description of drawings
Fig. 1 is a heat flux sensor theory structure synoptic diagram.
Fig. 2 is a traditional hot flow sensor temperature difference heat galvanic couple equivalent circuit diagram.
Fig. 3 is a traditional hot flow sensor signal output synoptic diagram.
Fig. 4 is a kind of heat flux sensor temperature difference heat galvanic couple equivalent circuit diagram with temperature compensation of the present utility model.
Fig. 5 is a kind of heat flux sensor signal output synoptic diagram with temperature compensation of the present utility model.
Among the figure: 1-constantan paillon foil; 2-constantan paillon foil lead-in wire; The heat sink body of 3-; 4-is heat sink body lead;
Embodiment
Embodiment
A kind of heat flux sensor of the present utility model with temperature compensation, this device comprises the constantan circle paillon foil 1 and the heat sink body 3 of a surperficial blacking, heat sink body 3 is the right cylinder of inner hollow, its material is an oxygen-free copper, constantan circle paillon foil 1 is placed on the groove of going up processing interior and the periphery and 3 welding of heat sink body of heat sink body 3, draw the constantan paillon foil lead-in wire 2 that a root timber material is an anaerobic in the center, the back side of constantan circle paillon foil 1, heat sink body 3 draw a heat sink body lead 4 bottom, the material of heat sink body lead 4 is the constantan material identical with the constantan paillon foil.This heat flux sensor output signal equivalent circuit diagram as shown in Figure 4, V=V
1-V
2+ V
3V
1And V
2Situation such as background material described in, no longer repeat.Along with the increase of Measuring Time, heat sink body temperature degree constantly rises, i.e. V
3Increase, in the sensor total output signal, because V
3With V
1-V
2The signal homophase, V
3Forward is added among the V, has played compensating action, makes the improved stability of sensor, and the compensating action effect as shown in Figure 5.
Claims (2)
1. heat flux sensor with temperature compensation, this device comprises the constantan circle paillon foil (1) and the heat sink body (3) of a surperficial blacking, heat sink body (3) is the right cylinder of inner hollow, its material is an oxygen-free copper, constantan circle paillon foil (1) is located at the top and periphery and heat sink body (3) welding of heat sink body (3), drawing a root timber material in the center, the back side of constantan circle paillon foil (1) is the constantan paillon foil lead-in wire (2) of oxygen-free copper, draws a heat sink body lead (4) on heat sink body (3); This heat flux sensor is characterised in that the material of heat sink body lead (4) is the constantan material identical with the constantan paillon foil.
2. a kind of heat flux sensor with temperature compensation according to claim 1 is characterized in that: described heat sink body lead (4) is drawn from the bottom of heat sink body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201791236U CN201327417Y (en) | 2008-11-21 | 2008-11-21 | Heat flow sensor with temperature compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201791236U CN201327417Y (en) | 2008-11-21 | 2008-11-21 | Heat flow sensor with temperature compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201327417Y true CN201327417Y (en) | 2009-10-14 |
Family
ID=41179389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201791236U Expired - Lifetime CN201327417Y (en) | 2008-11-21 | 2008-11-21 | Heat flow sensor with temperature compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201327417Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840464A (en) * | 2016-11-14 | 2017-06-13 | 中国航天空气动力技术研究院 | A kind of water-cooled Gordon calorimeter |
-
2008
- 2008-11-21 CN CNU2008201791236U patent/CN201327417Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840464A (en) * | 2016-11-14 | 2017-06-13 | 中国航天空气动力技术研究院 | A kind of water-cooled Gordon calorimeter |
| CN106840464B (en) * | 2016-11-14 | 2019-06-18 | 中国航天空气动力技术研究院 | A kind of water cooling Gordon calorimeter |
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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: 20091014 Effective date of abandoning: 20081121 |