CN104977089A - Sensing device for improving dynamic performance of temperature sensor - Google Patents
Sensing device for improving dynamic performance of temperature sensor Download PDFInfo
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- CN104977089A CN104977089A CN201510426842.8A CN201510426842A CN104977089A CN 104977089 A CN104977089 A CN 104977089A CN 201510426842 A CN201510426842 A CN 201510426842A CN 104977089 A CN104977089 A CN 104977089A
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Abstract
The present invention discloses a sensing device for improving the dynamic performance of a temperature sensor. The device comprises a detection part and a plate-shaped heat collection part. One end part of the detection part and the plate-shaped heat collection part are fixed. The detection part is provided with a hollow column body. The shape of the hollow column body is similar to that of the temperature sensor and the hollow column body can contain the other end part opening of the temperature sensor. At least one side face of the heat collection part is provided with a heat collection grid, and the heat collection part is used for being contacted with detected fluid and transferring the heat of the detected fluid to the detection part. The sensing device has the advantages of large heat transfer area, contact with the detected fluid, large detection area, the improvement of temperature detection precision of the detected fluid, the further shortening of the response delay of temperature control and the reduction of fluctuation of controlled temperature.
Description
Technical field
The present invention relates to a kind of sensing apparatus, particularly relating to a kind of sensing apparatus for improving temperature sensor dynamic property be used in combination with temperature sensor, belonging to temperature detection field.
Background technology
The temperature of temperature sensor measurement detected fluid, the temperature probe of temperature sensor is direct and detected fluid contacts often, namely be point cantact between the sense terminals of temperature probe and detected fluid, the temperature being similar to a some territory in detected fluid of temperature sensor actual measurement.When the fluid is flowing, through the temperature variation of the fluid of the sensing end points of temperature probe, the temperature that temperature sensor detects changes thereupon, cannot detect the medial temperature of local.Generalized case, the Temperature Distribution of detected fluid is uneven, as air, water etc., when the temperature of detected fluid reaches control overflow, but due to temperature distributing disproportionation even detected fluid flowing time, the temperature that temperature sensor is detected is fluctuated, frequent fluctuation, competing and cause temperature Ore-controlling Role frequent movement, causes the temperature of controlled fluid to produce fluctuation.As, for the control of room temperature, first, indoor temperature frequent fluctuation can be made, sometimes hot and sometimes cold, allow people feel extremely uncomfortable, sometimes also may affect the health of people; Secondly, during the even detected fluid flowing of temperature distributing disproportionation, the temperature that temperature sensor detects is fluctuated, causes temperature Ore-controlling Role frequent movement, the temperature of detected fluid can be made to reach the control objectives temperature experience longer time, usually need more than 8 minutes; Again, the heat of the control circuit generation of temperature controller, the temperature of the detected fluid causing temperature sensor to detect is drifted about, and make the actual temperature of detected fluid lower than control objectives temperature, its error reaches more than 4 degree.The mode that existing temperature sensor detects the temperature of detected fluid determines that the control of temperature controller is ageing and control accuracy is lower, and then affects people to the comfort level of temperature and satisfaction.
For the many problems of the storage existed in above-mentioned prior art, need a kind of sensing apparatus for improve temperature sensor dynamic property short with the control response time increasing detected fluid area of detection be used in combination with temperature sensor of exploitation badly.
Summary of the invention
The object of the invention is the dynamic property improving temperature sensor; Increase on the one hand the contact area between temperature sensor and detected fluid, make temperature sensor can detect the medial temperature of a comparatively large regions (local), reduce the even detected fluid of temperature distributing disproportionation and to flow the temperature fluctuation caused; On the other hand, the heat of detected fluid even for the temperature distributing disproportionation of temperature sensing area (local) is transmitted fast by the device that thermal conductivity is high, this regional temperature is evenly distributed, reach the medial temperature in this region fast, shorten temperature that temperature control system realizes controlled fluid and reach time required for target control temperature, improve and control response; Moreover employing heat-barrier material, the control circuit of temperature controller and temperature sensor isolated, the heat that control circuit produces does not produce radiation effect to temperature sensor, improves the precision of temperature sensor detected temperatures.In order to realize above-mentioned technical goal, the invention provides a kind of sensing apparatus for improving temperature sensor dynamic property controlling the response time with the shortening increasing detected fluid area of detection be used in combination with temperature sensor.
Technical scheme of the present invention is to provide a kind of sensing apparatus for improving temperature sensor dynamic property, and its designing points is: described sensing apparatus comprises test section and tabular thermal-arrest portion, and an end and the tabular thermal-arrest portion of described test section fix; Described test section is provided with the hollow cylinder that can hold the other end opening of temperature sensor similar to temperature sensor shape, and at least one side in described tabular thermal-arrest portion is provided with the thermal-arrest screen for increasing heat interchanging area.
In the application, the present invention also has the following technical scheme optimized further.
Further, the opposite flank being positioned at the side of test section side in described tabular thermal-arrest portion is provided with multiple the first thermal-arrest screen for increasing heat interchanging area.
Further, the side being positioned at test section side in described tabular thermal-arrest portion is provided with multiple the second thermal-arrest screen for increasing heat interchanging area.
Further, described tabular thermal-arrest portion is provided with the thermofin matched with it, described thermofin be positioned at test section side and and tabular thermal-arrest portion fit.
Further, the second thermofin in tabular that described thermofin comprises first thermofin in a tubular form that can hold test section similar with test section shape and matches with tabular thermal-arrest portion, an end and described second thermofin of described first thermofin fit.
Further, described first thermal-arrest screen and/or the second thermal-arrest screen are tabular, arranged in parallel.
Further, described first thermal-arrest screen and/or the second thermal-arrest screen are curved with the intersecting lens of the plane being parallel to tabular thermal-arrest portion, are symmetrically distributed in the periphery of test section.
Further, described curve is made up of circular arc, or described curve is made up of para-curve, or described curve connects in turn by least two and the mutually circumscribed circular arc in tie point place is formed, or described curve is connected and composed successively by least two straight-line segments.
Further, described test section, the first thermal-arrest screen, the second thermal-arrest screen and tabular thermal-arrest portion are formed in one, and material is the aluminium or copper that thermal conductivity is high.
Further, the spacing between two adjacent heat collection gate plates of described first thermal-arrest screen is equal, and the spacing between two adjacent heat collection gate plates of described second thermal-arrest screen is equal.
In the application, temperature sensor is assemblied in the test section of sensing apparatus, and make it fit with the tabular thermal-arrest portion of sensing apparatus, in order to improve effective transmission of the heat between temperature sensor and sensing apparatus, heat-conducting silicone grease is filled in gap usually between temperature sensor and the test section of sensing apparatus, reduce the thermal resistance between temperature sensor and sensing apparatus, guarantee that temperature sensor accurately can measure the temperature of detected fluid, and the thermometric response time is less.One side assembling thermofin of sensing apparatus, the control circuit of temperature controller and sensing apparatus isolated, block heat transmission between the two, avoid detected temperatures to drift about.Again the pin of temperature sensor and control circuit electrical connection, sensing apparatus and temperature controller shell are fixed.
Sensing apparatus of the present invention and temperature sensor are used in combination, sensing apparatus contacts with detected fluid, exchange heat is carried out between sensing apparatus and detected fluid, sensing apparatus serves as heat catalysis simultaneously, the heat of the even detected fluid of the temperature distributing disproportionation of surveyed area is made to be delivered to low temperature place from high temperature, the temperature of the detected fluid of this detection zone is made to be tending towards identical, until the temperature of sensing apparatus is identical with the temperature of detected fluid, now the temperature of sensing apparatus is the medial temperature of this surveyed area fluid, the temperature of temperature sensor measurement sensing apparatus, namely the medial temperature of detected fluid is measured.Sensing apparatus has test section, tabular thermal-arrest portion, thermal-arrest screen, makes to have larger contact area between sensing apparatus and detected fluid, the medial temperature in the detected fluid region that the temperature measured by temperature sensor contacts for sensing apparatus.When the detected fluid flowing that temperature distributing disproportionation is even, what namely the detected fluid contacted with sensing apparatus had a high-temperature region also to have low-temperature space, part is offset the impact of sensing apparatus by high-temperature region and low-temperature space even completely, the fluctuating range of the temperature of sensing apparatus is very little, with sensing apparatus with the use of the fluctuating range of temperature that detects of temperature sensor very little, the temperature that such temperature sensor detects is more stable.Detected fluid is generally the poor conductor of heat, heat is delivered to another place from one needs the longer time, if the temperature of temperature sensor direct-detection detected fluid, the temperature detected is fluctuated, fluctuating range is large, about 4 degree, cause temperature Ore-controlling Role frequent movement, then what need to grow very much just can make (on average) temperature of detected fluid reach the target temperature of control to (the control about 8-10 minute to room temperature) between seasonable; And sensing apparatus adopts the high material (as copper, aluminium, silver or carbon fiber) of thermal conductivity to make, the heat of the detected fluid contacted with sensing apparatus is delivered to temperature lower region by sensing apparatus from areas of higher temperature, because the thermal conductivity of sensing apparatus is high, area of detection is large, the fluctuating range of the temperature detected after adopting sensing apparatus is little, greatly reduce the time (to room temperature, about needing 1-3 minute) that the medial temperature realizing detected fluid reaches control objectives temperature.Between the control circuit and sensing apparatus of temperature controller, the thermofin be made up of heat insulation felt is set, the heat that the control circuit of temperature controller produces cannot be radiated on sensor, the detection of temperature sensor to detected fluid temperature can not be affected, make temperature sensor can measure the true temperature of detected fluid, and can not temperature drift be produced.
Beneficial effect
The fluctuating range of the temperature that temperature sensor detects is little, by the test section of sensing apparatus, tabular thermal-arrest portion, thermal-arrest screen, make that there is between sensing apparatus and detected fluid larger contact area, the medial temperature of the detected fluid that the temperature measured by temperature sensor contacts for sensing apparatus.When the detected fluid flowing that temperature distributing disproportionation is even, what namely the detected fluid contacted with sensing apparatus had a higher temperatures also has compared with low temperature, part being offset by the impact of sensing apparatus even completely with the detected fluid of low temperature of higher temperatures, the fluctuating range of the temperature of sensing apparatus is very little, with sensing apparatus with the use of the fluctuating range of temperature that detects of temperature sensor very little.
Reduce the response time that detected fluid temperature reaches control objectives temperature, detected fluid is generally the poor conductor of heat, heat is delivered to another place from one needs the longer time, if the temperature of temperature sensor direct-detection detected fluid, the temperature detected is fluctuated, fluctuating range is large, causes temperature Ore-controlling Role frequent movement, then needs the longer response time that the temperature of detected fluid just can be made to reach control objectives temperature.Sensing apparatus adopts the material (as copper, aluminium, silver or carbon fiber) of high heat conductance to make, the heat of the detected fluid contacted with sensing apparatus is delivered to temperature lower region by sensing apparatus from areas of higher temperature, because the thermal conductivity of sensing apparatus is high, area of detection is large, the fluctuating range of the temperature detected after adopting sensing apparatus is little, greatly reduces the time that the medial temperature realizing detected fluid reaches control objectives temperature.
The temperature that the heat that control circuit produces can not make temperature sensor detect is drifted about, by the thermofin arranged between the control circuit and sensing apparatus of temperature controller, heat radiation that control circuit produces can be intercepted on sensing apparatus, thus the detection of temperature sensor to detected fluid temperature can not be affected, make temperature sensor can measure the true temperature of detected fluid, and can not temperature drift be produced.
Accompanying drawing explanation
The cut-open view of the main apparent direction of Fig. 1 sensing apparatus of the present invention.
The upward view of Fig. 2 Fig. 1.
Fig. 3 is provided with the cut-open view of the main apparent direction of the sensing apparatus of thermofin.
A kind of thermal-arrest of Fig. 4 screen is the vertical view of the sensing apparatus of single circular arc.
A kind of thermal-arrest of Fig. 5 screen is the vertical view of parabola shaped sensing apparatus.
A kind of thermal-arrest of Fig. 6 screen is the vertical view of the sensing apparatus of many circular arc.
A kind of thermal-arrest screen of Fig. 7 is the vertical view of the sensing apparatus of fold-line-shaped.
Wherein: 1-sensing apparatus, 11-tabular thermal-arrest portion, 12-first thermal-arrest screen, 13-test section, 14-second thermal-arrest screen, 2-temperature sensor, 3-heat-conducting silicone grease, 4-thermofin, 41-second thermofin, 42-first thermofin.
Embodiment
In order to can illustrate better and understand technical scheme of the present invention, below in conjunction with specific embodiments and the drawings, the technical program is described further.
Embodiment 1
A kind of sensing apparatus improving temperature sensor dynamic property of the present invention, as depicted in figs. 1 and 2, described sensing apparatus 1 comprises test section 13 and tabular thermal-arrest portion 11, one end (upper end of the test section 13 in Fig. 1) of described test section 13 and the lower surface in tabular thermal-arrest portion 11 fix, preferably, test section 13 is positioned at centre, tabular thermal-arrest portion 11.The inside of described test section 13 is provided with the hollow cylinder in a tubular form of the other end (lower end of test section 13 in Fig. 1) opening that can hold temperature sensor 2 similar to the shape of temperature sensor 2.Described tabular thermal-arrest portion 11 is square plate, may also be square plate, trapezoidal flat board, circular dull and stereotyped or other shape; The opposite flank (i.e. the upper surface in tabular thermal-arrest portion 11) being positioned at the side of test section 13 side in described tabular thermal-arrest portion 11 is provided with multiple first thermal-arrest screen 12, for increasing heat interchanging area, strengthens the heat of conduction detected fluid.Described first thermal-arrest screen 12 is tabular, and the first different thermal-arrest screens 12 is arranged in parallel, and preferably spaced set, contacts with detected fluid, for heat conduction between detected fluid and test section 13.The thickness in described tabular thermal-arrest portion 11 is 1.9mm, and the thickness of the first thermal-arrest screen 12 is 1.3mm, also can select other thickness as required, because it is not the technology point needing protection of the present invention, does not list one by one at this.Described test section 13, first thermal-arrest screen 12 and tabular thermal-arrest portion 11 are formed in one, and avoid welding to produce thermal resistance, guarantee good thermal conductivity, material is the aluminium that thermal conductivity is high, also can be copper, silver or carbon fiber.
During use, temperature sensor 2 is assemblied in the test section 13 of sensing apparatus 1, and the downside in the tabular thermal-arrest portion 11 of the top end face of temperature sensor 2 and sensing apparatus 1 is fitted, as shown in Figure 1.In order to improve effective transmission of the heat between temperature sensor 2 and sensing apparatus 1, fill part in gap usually between temperature sensor 2 and the test section 13 of sensing apparatus 1 and fill heat-conducting silicone grease 3, reduce the thermal resistance between temperature sensor 2 and sensing apparatus 1, guarantee that temperature sensor 2 accurately can measure the temperature of detected fluid, less with the response time making controlled fluid reach needed for control temperature.Again the pin two 1 of temperature sensor 2 and control circuit electrical connection, sensing apparatus 1 and temperature controller shell are fixed.
The test section of sensing apparatus of the present invention, tabular thermal-arrest portion, thermal-arrest screen, soakage device is contacted with the detected fluid of certain volume, it has larger contact area, temperature detection area is larger, the medial temperature of the detected fluid in the body territory that the temperature measured by temperature sensor contacts for soakage device, the temperature in detection bodies territory, more can react detected fluid temperature levels.When the detected fluid flowing that temperature distributing disproportionation is even, what namely the detected fluid contacted with sensing apparatus had a higher temperatures also has compared with low temperature, part being offset by the impact of sensing apparatus even completely with the detected fluid of low temperature of higher temperatures, the fluctuating range of the temperature of sensing apparatus is very little, with sensing apparatus with the use of the fluctuation of temperature that detects of temperature sensor very little, the temperature fluctuation of the controlled fluid that temperature control system controls is very little, room temperature is controlled, its temperature fluctuation range is reduced to less than 1 degree by about original 4 degree, complete imperceptible sometimes hot and sometimes cold sensation.
Detected fluid is generally the poor conductor of heat, heat is delivered to another place from one needs the longer time, if the temperature of temperature sensor direct-detection detected fluid, the temperature detected is fluctuated, fluctuating range is large, about 4 degree, cause temperature Ore-controlling Role frequent movement, then need the longer response time that the medial temperature of detected fluid just can be made to reach control objectives temperature.Sensing apparatus adopts the material (as copper, aluminium, silver or carbon fiber) of high heat conductance to make, the heat of the detected fluid contacted with sensing apparatus is delivered to temperature lower region by sensing apparatus from areas of higher temperature, because the thermal conductivity of sensing apparatus is high, area of detection is large, the fluctuating range of the temperature detected after adopting sensing apparatus is little, greatly reduces the time that the medial temperature realizing detected fluid reaches control objectives temperature.For the control of room temperature, prior art detects and about needs 8 minutes, room temperature just can be made to reach target temperature, and present embodiment only needs about 3 minutes (even less time) to make room temperature reach target temperature, namely substantially reduce the response time reaching control objectives temperature of controlled fluid temperature.
Embodiment 2
Embodiment 2 is only with the difference of embodiment 1, as shown in Figure 3, the side (i.e. the lower surface in tabular thermal-arrest portion 11) being positioned at test section 13 side in described tabular thermal-arrest portion 11 is provided with multiple second thermal-arrest screen 14, the part second thermal-arrest screen 14 interfered with test section 13 in it and the outside surface of test section 13 match, and fix, for increasing heat interchanging area with the outside surface of test section 13.Described second thermal-arrest screen 14 is tabular, the second different thermal-arrest screens 14 is arranged in parallel, preferably spaced set, for contacting with detected fluid, transferring heat between detected fluid and sensing apparatus, and by sensing apparatus transferring heat between the zones of different of detected fluid, and make heat exchange between detected fluid and test section 13, make test section 13 identical with detected fluid temperature.Described test section 13, first thermal-arrest screen 12, second thermal-arrest screen 14 and tabular thermal-arrest portion 11 are formed in one, and avoid welding to produce thermal resistance, guarantee good thermal conductivity, material is the aluminium that thermal conductivity is high, also can be copper, silver or carbon fiber.Have the contact area larger than embodiment 1 between the sensing apparatus of present embodiment and detected fluid, the dynamic property that measured stream body temperature measured by temperature sensor is more excellent.For the control of room temperature, present embodiment only needs about 2.5 minutes to make room temperature reach target control temperature.
Embodiment 3
Embodiment 3 is only that with the difference of embodiment 1 side of (not shown in FIG.) described sensing apparatus 1 is provided with the thermofin 4 matched with it.Described thermofin 4 comprises the first thermofin 42 and the second thermofin 41, first thermofin 42 for being provided with the tubular structure that can hold test section 13 similar to test section 13 shape, is the column of hollow; The middle part of the second thermofin 41 be provided with that the first thermofin 42 passes and and the outside surface of the first thermofin 42 hole of matching, be tabular.Second thermofin 41 is arranged on the side in the tabular thermal-arrest portion 11 of sensing apparatus 1, and fits with tabular thermal-arrest portion 11 and be positioned at test section 13 side, and namely the lower surface in the second thermofin 41 and tabular thermal-arrest portion 11 fits; The medial surface of the first thermofin 42 and the lateral surface of test section 13 fit, the medial surface in the lateral surface of one end (i.e. upper end) of described first thermofin 42 and the hole of described second thermofin 41 fits, in order to ensure effect of heat insulation, in application conventional glue the upper end of the first thermofin 42 and the second thermofin 41 bonding, prevent its relative sliding, produce gap, affect effect of heat insulation, the temperature detected to avoid temperature sensor further produces the possibility of drift.
The thermofin arranged between the control circuit and sensing apparatus of temperature controller, heat radiation that control circuit produces can be intercepted on sensing apparatus and temperature sensor, and affect the accurate detection of temperature sensor to detected fluid temperature, make temperature sensor can measure the true temperature of detected fluid, and can not temperature drift be produced.Described thermofin is made up of heat insulation felt, and heat insulation felt material is preferably nonconducting aluminosilicate fiber cotton and makes.
Embodiment 4
Embodiment 4 is only with the difference of embodiment 2, and as shown in Figure 3, the downside of described sensing apparatus 1 is provided with the thermofin 4 matched with it.Described thermofin 4 comprises the first thermofin 42 and the second thermofin 41, first thermofin 42 for being provided with the tubular structure that can hold test section 13 similar to test section 13 shape, is the cylinder of hollow; The middle part of the second thermofin 41 be provided with that the first thermofin 42 passes and and the outside surface of the first thermofin 42 hole of matching, be tabular.Second thermofin 41 is arranged on the below of the second thermal-arrest screen 14 on sensing apparatus 1, and fits with the lower surface of the second thermal-arrest screen 14; The medial surface of the first thermofin 42 and the lateral surface of test section 13 fit, and the lower surface of the upper surface of the first thermofin 42 and the second thermal-arrest screen 14 of sensing apparatus 1 fits; The medial surface in the lateral surface of the upper end of described first thermofin 42 and the hole of described second thermofin 41 fits.In order to ensure effect of heat insulation, in application conventional glue the upper end of the first thermofin 42 and the second thermofin 41 bonding, prevent its relative sliding, produce gap, affect effect of heat insulation, the possibility that the temperature generation avoiding temperature sensor to detect further is drifted about.
The thermofin arranged between the control circuit and sensing apparatus of temperature controller, heat radiation that control circuit produces can be intercepted on sensing apparatus and temperature sensor, and affect the accurate detection of temperature sensor to detected fluid temperature, make temperature sensor can measure the true temperature of detected fluid, and can not temperature drift be produced.Described thermofin heat insulation felt is formed, and heat insulation felt material is preferably nonconducting aluminosilicate fiber cotton.
Embodiment 5
Embodiment 5 is only with the difference of embodiment 4, described first thermal-arrest screen 12 is single circular arc line with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, as shown in Figure 4, described circular arc is symmetrically distributed in the left and right sides of test section 13, left side circular arc is convex in test section 13, and right side circular arc is convex in test section 13; Between described left side circular arc and right side circular arc, one, thermal-arrest screen that two or more and described circular arc curvature is close are set without thermal-arrest screen region, one, two or more flat thermal-arrest screen also can be set, increase and change area, improve heat exchange efficiency.
Described second thermal-arrest screen 14 is single circular arc line with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, and described circular arc is symmetrically distributed in the left and right sides of test section 13, and left side circular arc is convex in test section 13, and right side circular arc is convex in test section 13; Between described left side circular arc and right side circular arc, one, thermal-arrest screen that two or more and described circular arc curvature is close are set without thermal-arrest screen region, one, two or more flat thermal-arrest screen also can be set, increase and change area, improve heat exchange efficiency.The i.e. bending screen of the equal arc-shaped of the first thermal-arrest screen 12, second thermal-arrest screen 14, preferably spaced set, in order to increase the contact area of soakage device 1 and tested air, strengthen heat exchange efficiency, when adopting the soakage device of this structure, the dynamic property of temperature sensor when measuring tested air themperature is excellent, to the control of room temperature, only needs within about 2 minutes, room temperature can be made to reach target control temperature.
Embodiment 6
Embodiment 6 is only with the difference of embodiment 4, described first thermal-arrest screen 12 is single para-curve with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, as shown in Figure 5, described para-curve is symmetrically distributed in the left and right sides of test section 13, left side para-curve is convex in test section 13, and right side para-curve is convex in test section 13; Between described left side para-curve and right side para-curve, one, thermal-arrest screen that two or more and described parabolic curvature is close are set without thermal-arrest screen region, one, two or more flat thermal-arrest screen also can be set, increase and change area, improve heat exchange efficiency.
Described second thermal-arrest screen 14 is single para-curve with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, and described para-curve is symmetrically distributed in the left and right sides of test section 13, and left side para-curve is convex in test section 13, and right side para-curve is convex in test section 13; Between described left side para-curve and right side para-curve, one, thermal-arrest screen that two or more and described parabolic curvature is close are set without thermal-arrest screen region, one, two or more flat thermal-arrest screen also can be set, increase and change area, improve heat exchange efficiency.The i.e. all parabolic bending screen of the first thermal-arrest screen 12, second thermal-arrest screen 14, preferably spaced set, in order to increase the contact area of soakage device 1 and tested air, strengthen heat exchange efficiency, when adopting the soakage device of this structure, the dynamic property of temperature sensor when measuring tested air themperature is excellent, to the control of room temperature, only needs within about 2 minutes, room temperature can be made to reach target control temperature.
Embodiment 7
Embodiment 7 is only with the difference of embodiment 4: described first thermal-arrest screen 12 is curved with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, described curve is connected in turn by least two its free ends and the mutually circumscribed circular arc in tie point place is formed, and it is symmetrically distributed in the left and right sides of test section 3.As shown in Figure 6, the center of circle of arbitrary two adjacent circular arcs is distributed in the not homonymy of described arbitrary circular arc, makes adjacent circular arc mutually circumscribed, and forms smooth curve.The curve formed for two circular arcs for ease of understanding is described, as shown in Figure 6, described curve is made up of the mutually circumscribed circular arc of two same curvature, the homonymy of the center of circle of described two circular arcs not arbitrary circular arc wherein, to make two circular arcs mutually circumscribed, form smooth curve.
Described second thermal-arrest screen 14 is curved with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, and described curve is connected in turn by least two its free ends and the mutually circumscribed circular arc in tie point place is formed, and it is symmetrically distributed in the left and right sides of test section 3.As shown in Figure 6, the center of circle of arbitrary two adjacent circular arcs is distributed in the not homonymy of described arbitrary circular arc, makes adjacent circular arc mutually circumscribed, and forms smooth curve.The curve formed for two circular arcs for ease of understanding is described, as shown in Figure 6, described curve is made up of the mutually circumscribed circular arc of two same curvature, the homonymy of the center of circle of described two circular arcs not arbitrary circular arc wherein, to make two circular arcs mutually circumscribed, form smooth curve.Namely the first thermal-arrest screen 12, second thermal-arrest screen 14 is all in wavy bending screen, preferably spaced set, in order to increase the contact area of soakage device 1 and tested air, strengthen heat exchange efficiency, when adopting the soakage device of this structure, the dynamic property of temperature sensor when measuring tested air themperature is excellent, to the control of room temperature, only needs within about 1.8 minutes, room temperature can be made to reach target control temperature.
Embodiment 8
Embodiment 8 is only with the difference of embodiment 4: described first thermal-arrest screen 12 is curved with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, described curve is connected and composed successively by least two straight-line segments, it is symmetrically distributed in the right and left side of test section 3, as shown in Figure 7, for convenience, in turn serial number is carried out to aforesaid rectilinear section, from one end, straight-line segment is numbered in turn, as, 1, 2, 3 ... n, wherein the straight-line segment of odd-numbered is parallel to each other, the straight-line segment of even-numbered is parallel to each other, wherein the straight-line segment of the odd-numbered of numbering consecutive numbers is connected with one end of the straight-line segment of even-numbered, and carry out fillet process (not shown in FIG.) at tie point, to form the smooth curve of polyline shaped.Lift for ease of understanding, be described for the curve that three straight-line segments are formed, as shown in Figure 7, described broken line is connected and composed successively by three straight-line segments.From bottom to top straight-line segment is numbered in turn: 1,2,3; Wherein No. 1, No. 3 straight-line segment is parallel, and Line 1 section is connected with No. 2 line segments, and No. 2 line segments are connected with No. 3 line segments, and carry out fillet process to junction, forms the smooth curve of polyline shaped.The i.e. curved sheets of the first thermal-arrest screen 12 in polyline shaped, preferably spaced set, in order to increase the surface of contact of soakage device 1 and detected fluid.
Described second thermal-arrest screen 14 is curved with the intersecting lens of the plane being parallel to tabular thermal-arrest portion 11, described curve is connected and composed successively by least two straight-line segments, it is symmetrically distributed in the right and left side of test section 3, as shown in Figure 7, for convenience, in turn serial number is carried out to aforesaid rectilinear section, from one end, straight-line segment is numbered in turn, as, 1, 2, 3 ... n, wherein the straight-line segment of odd-numbered is parallel to each other, the straight-line segment of even-numbered is parallel to each other, wherein the straight-line segment of the odd-numbered of numbering consecutive numbers is connected with one end of the straight-line segment of even-numbered, and carry out fillet process (not shown in FIG.) at tie point, to form the smooth curve of polyline shaped.Lift for ease of understanding, be described for the curve that three straight-line segments are formed, as shown in Figure 7, described broken line is connected and composed successively by three straight-line segments.From bottom to top straight-line segment is numbered in turn: 1,2,3; Wherein No. 1, No. 3 straight-line segment is parallel, and Line 1 section is connected with No. 2 line segments, and No. 2 line segments are connected with No. 3 line segments, and carry out fillet process to junction, forms the smooth curve of polyline shaped.The i.e. curved sheets of the second thermal-arrest screen 14 in polyline shaped, preferably spaced set, in order to increase the surface of contact of soakage device 1 and detected fluid.Have the contact area larger than embodiment 4 between the soakage device of present embodiment and detected fluid, the dynamic property of temperature sensor when measuring detected fluid temperature is more excellent.For the control of room temperature, the present invention only need about 1.8 minutes even less time chien shih room temperature reach target control temperature.
Sensing apparatus of the present invention and temperature sensor are used in combination, sensing apparatus contacts with detected fluid, exchange heat is carried out between sensing apparatus and detected fluid, sensing apparatus serves as heat catalysis simultaneously, the heat of the even detected fluid of the temperature distributing disproportionation of surveyed area is made to be delivered to low temperature place from high temperature, until the temperature of sensing apparatus is identical with the temperature of detected fluid, now the temperature of sensing apparatus is the medial temperature of this surveyed area fluid, the temperature of temperature sensor measurement sensing apparatus, namely measures the medial temperature of detected fluid.Sensing apparatus has test section, tabular thermal-arrest portion, thermal-arrest screen, sensing apparatus is contacted with the detected fluid of certain volume, it has larger contact area, temperature detection area is larger, the medial temperature of the detected fluid in the space that the temperature measured by temperature sensor contacts for sensing apparatus, the medial temperature in detection bodies territory, more can react detected fluid temperature levels.When the detected fluid flowing that temperature distributing disproportionation is even, what namely the detected fluid contacted with sensing apparatus had a high-temperature region also to have low-temperature space, part is offset the impact of sensing apparatus by high-temperature region and low-temperature space even completely, the fluctuating range of the temperature of sensing apparatus is little, with sensing apparatus with the use of the fluctuating range of temperature that detects of temperature sensor very little, the temperature that such temperature sensor detects is more stable.Detected fluid is generally the poor conductor of heat, heat is delivered to another place from one needs the longer time, if the temperature of temperature sensor direct-detection detected fluid, the temperature detected is fluctuated, fluctuating range about 4 degree, cause temperature Ore-controlling Role frequent movement, then what need to grow very much just can make (on average) temperature of detected fluid reach the target temperature of control to (the control about 8-10 minute to room temperature) between seasonable; And sensing apparatus adopts the high material (as copper, aluminium, silver or carbon fiber) of thermal conductivity to make, the heat of the detected fluid contacted with sensing apparatus is delivered to temperature lower region by sensing apparatus from areas of higher temperature, because the thermal conductivity of sensing apparatus is high, area of detection is large, the fluctuating range of the temperature detected after adopting soakage device is little, greatly reduce the time (to room temperature, about needing 1-3 minute) that the medial temperature realizing detected fluid reaches control objectives temperature.Between the control circuit and sensing apparatus of temperature controller, thermofin is set, the heat that the control circuit of temperature controller produces cannot be radiated on sensing apparatus and temperature sensor, the detection of temperature sensor to detected fluid temperature can not be affected, make temperature sensor can measure the true temperature of detected fluid, and can not temperature drift be produced.。
Compared to the prior art, the present invention has following technical progress.
1) fluctuating range of temperature that detects of temperature sensor is very little, by the thermal-arrest screen in the test section of sensing apparatus, tabular thermal-arrest portion, tabular thermal-arrest portion, make that there is between sensing apparatus and detected fluid larger contact area, the medial temperature of the detected fluid that the temperature measured by temperature sensor contacts for sensing apparatus.When the detected fluid flowing that temperature distributing disproportionation is even, what namely the detected fluid contacted with sensing apparatus had a higher temperatures also has compared with low temperature, part being offset by the impact of sensing apparatus even completely with the detected fluid of low temperature of higher temperatures, the fluctuating range of the temperature of sensing apparatus is little, with sensing apparatus with the use of the fluctuating range of temperature that detects of temperature sensor very little.
2) reduce detected fluid temperature reach control objectives temperature between seasonable, detected fluid is generally the poor conductor of heat, heat is delivered to another place from one needs the longer time, if the temperature of temperature sensor direct-detection detected fluid, the temperature detected is fluctuated, fluctuating range about 4 degree, causes temperature Ore-controlling Role frequent movement, then need the longer response time (the control about 8-10 minute to room temperature) that the temperature of detected fluid just can be made to reach control objectives temperature.Sensing apparatus adopts the material (as copper, aluminium, silver or carbon fiber) of high heat conductance to make, the heat of the detected fluid contacted with sensing apparatus is delivered to temperature lower region by sensing apparatus from areas of higher temperature, because the thermal conductivity of sensing apparatus is high, area of detection is large, the fluctuating range of the temperature detected after adopting soakage device is little, greatly reduce the time (to room temperature, about needing 1-3 minute) that the medial temperature realizing detected fluid reaches control objectives temperature.
3) temperature that the heat that control circuit produces can not make temperature sensor detect is drifted about, by the thermofin arranged between the control circuit and sensing apparatus of temperature controller, heat radiation that control circuit produces can be intercepted on sensing apparatus and temperature sensor, thus the detection of temperature sensor to detected fluid temperature can not be affected, make temperature sensor can measure the true temperature of detected fluid, and can not temperature drift be produced.
Above embodiment is only do explanatory elaboration for the present invention, is not limited to this kind of embodiment, can realize other any equivalents modes of the object of the invention and all belong to protection scope of the present invention.
Claims (10)
1. improve a sensing apparatus for temperature sensor dynamic property, it is characterized in that: described sensing apparatus comprises test section and tabular thermal-arrest portion, an end and the tabular thermal-arrest portion of described test section fix; Described test section is provided with the hollow cylinder that can hold the other end opening of temperature sensor similar to temperature sensor shape, and at least one side in described tabular thermal-arrest portion is provided with the thermal-arrest screen for increasing heat interchanging area.
2. based on a kind of sensing apparatus improving temperature sensor dynamic property according to claim 1, it is characterized in that: the opposite flank being positioned at the side of test section side in described tabular thermal-arrest portion is provided with multiple the first thermal-arrest screen for increasing heat interchanging area.
3. based on a kind of sensing apparatus improving temperature sensor dynamic property according to claim 1, it is characterized in that: the side being positioned at test section side in described tabular thermal-arrest portion is provided with multiple the second thermal-arrest screen for increasing heat interchanging area.
4. based on a kind of sensing apparatus improving temperature sensor dynamic property according to claim 2, it is characterized in that: the side being positioned at test section side in described tabular thermal-arrest portion is provided with multiple the second thermal-arrest screen for increasing heat interchanging area.
5. based on a kind of sensing apparatus improving temperature sensor dynamic property described in the arbitrary claim of claim 1-4, it is characterized in that: described tabular thermal-arrest portion is provided with the thermofin matched with it, described thermofin be positioned at test section side and and tabular thermal-arrest portion fit.
6. based on a kind of sensing apparatus improving temperature sensor dynamic property according to claim 5, it is characterized in that: the second thermofin in tabular that described thermofin comprises first thermofin in a tubular form that can hold test section similar with test section shape and matches with tabular thermal-arrest portion, an end and described second thermofin of described first thermofin fit.
7. based on a kind of sensing apparatus improving temperature sensor dynamic property described in the arbitrary claim of claim 2-4, it is characterized in that: described first thermal-arrest screen and/or the second thermal-arrest screen are tabular.
8. based on a kind of sensing apparatus improving temperature sensor dynamic property described in the arbitrary claim of claim 2-4, it is characterized in that: described first thermal-arrest screen and/or the second thermal-arrest screen are curved with the intersecting lens of the plane being parallel to tabular thermal-arrest portion, are symmetrically distributed in the periphery of test section.
9. based on a kind of sensing apparatus improving temperature sensor dynamic property according to claim 8, it is characterized in that: described curve is made up of circular arc, or described curve is made up of para-curve, or described curve connects in turn by least two and the mutually circumscribed circular arc in tie point place is formed, or described curve is connected and composed successively by least two straight-line segments.
10. based on a kind of sensing apparatus improving temperature sensor dynamic property described in the arbitrary claim of claim 1-9, it is characterized in that, described test section, the first thermal-arrest screen, the second thermal-arrest screen and tabular thermal-arrest portion are formed in one.
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Application publication date: 20151014 |