CN106951010A - It is a kind of can continuous alternating temperature constant temperature system and constant temperature method - Google Patents
It is a kind of can continuous alternating temperature constant temperature system and constant temperature method Download PDFInfo
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Abstract
The invention belongs to constant temperature technology field, specifically related to it is a kind of can continuous alternating temperature constant temperature system, including heating module, Water Tank with Temp.-controlled, refrigeration module, monitoring module, control module and host module, described heating module, refrigeration module, monitoring module are connected with the control module respectively, and described monitoring module, heating module are also connected with the Water Tank with Temp.-controlled respectively with the refrigeration module；Described host module is connected with the control module；Simultaneously present invention also offers a kind of method of constant temperature, during isoperibol, the system changes traditional passive actively, to carry out actively mending temperature preferably to keep isoperibol to constant temperature system；In heat temperature raising, by algorithm make system rapidly and efficiently reach design temperature；Refrigerating plant is added, similar heating algorithm is used when needing cooling so that system drops to assigned temperature well, makes system more perfect；To meet experiment demand, it may be set in constant under different temperatures in specified range.
Description
Technical field
The invention belongs to constant temperature technology field, and in particular to it is a kind of can continuous alternating temperature constant temperature system and constant temperature method.
Background technology
At present, contact constant temperature system is (for example：Water Tank with Temp.-controlled), this system one more and more applied to experiment and scientific research
As associative operation is carried out using the constant temperature under liquid (be generally distilled water) environment.In the constant temperature system applied at present, need
When wanting heat temperature raising, often occur that temperature after heating is higher than design temperature, the process of design temperature, experiment are then rolled back again
In, it is often necessary to it is constant for a long time at a certain temperature, so that the physical quantity of correlation is measured, and during steady temperature, by
Gradually scattering and disappearing for heat is caused in system internal-external temperature difference, so that temperature drop, will again after being limited at a temperature of reaching setting
Heating is heated up, so that temperature keeps constant, and this working method not environmentally and easily causes the wasting of resources.At present, constant temperature
The constant temperature working method of system, is to start to heat again when certain limit is reached after temperature drop, when reaching or slightly higher
Stop heating when design temperature, circulate to reach the purpose of constant temperature with this.The present invention, will change this passive heating and mend temperature
Mode, change into actively carry out mend temperature, that is, temperature do not occur decline change in the case of, according to heat balance relation
The mode of taking the initiative carries out mending temperature, while, it is necessary to which during refrigeration cool-down, similar heating often occurs in the constant temperature system applied
The situation of heating, exactly after cooling to below design temperature, then rises the process for returning to design temperature, for such process again
In shortcoming, design a kind of relatively reasonable and energy-conservation mode.
The content of the invention
For not enough in the prior art and shortcoming, the problem of a kind of new method of the present invention is to solve such, root
The temperature reached according to needs, closes heater by thermal relationship, temperature stabilization is increased to assigned temperature, in order to keep automatically
In assigned temperature constant a period of time, by the way of temperature is mended in active, we will be certainly by the way of control heater power
The heat so lost is supplemented, so as to preferably make systems constant in assigned temperature etc., specific technical scheme is as follows：
It is a kind of can continuous alternating temperature constant temperature system,：Including heating module, Water Tank with Temp.-controlled, refrigeration module, monitoring module, control
Molding block and host module, Water Tank with Temp.-controlled built with liquid, described heating module, refrigeration module, monitoring module respectively with institute
Control module connection is stated, described monitoring module, heating module are also connected with the Water Tank with Temp.-controlled respectively with the refrigeration module；
Described host module is connected with the control module；Described monitoring module is used for the temperature of monitor and detection Water Tank with Temp.-controlled, together
When data detection signal is transferred to control module, control module controls the heating module pair according to the data detection signal
The Water Tank with Temp.-controlled is heated, or control module controls the refrigeration module to the perseverance according to the data detection signal
Warm water tank carries out refrigeration cool-down；Set the temperature value of the constant temperature system on the host module, the host module is by temperature
Angle value information transfer gives the control module,
Initialization system constant temperature corresponding time at regular intervals in certain temperature range, in order to carry out the survey of constant temperature
Try and use.
Further, the heating module is provided with heater, and the power P of the heater is continuously adjustabe and energy
On-line Control, can select suitable heating power to be heated as needed.
Further, refrigeration module is provided with refrigerating plant, and the power P of the refrigerating plant simultaneously can be online for continuously adjustabe
Control, similarly the power P of refrigerating plant is alterable value, can be adjusted as needed.
According to another aspect of the present invention, additionally provide it is a kind of can continuous alternating temperature constant temperature method, it is characterised in that：Including
Following steps,
Step 1：The assigned temperature value Ta that liquid in the Water Tank with Temp.-controlled needs to reach is set on the host module, this
In in described Water Tank with Temp.-controlled the temperature of liquid be this constant temperature system temperature；
Step 2：Monitoring module is detected to the real time temperature of liquid in the Water Tank with Temp.-controlled, obtains temperature value information,
Temperature value information is transferred to control module by the monitoring module, the assigned temperature value Ta that control module sets host module with
Real-time temperature values are contrasted, so that it is determined that system needs to heat or freezed；
Step 3：When the real time temperature is less than assigned temperature value Ta, the heating dress on control module control heating module
Put to Water Tank with Temp.-controlled heat time t；Before heating reaches assigned temperature value Ta, heating module releases heat and reaches system
During required heat, heater is closed；According to system thermal relation QInhale=k1·QPut, the QPutHeat is released for heater
Amount, the QInhaleFor the heat of liquid absorption in Water Tank with Temp.-controlled, fluid temperature stabilization in Water Tank with Temp.-controlled is set to be increased to assigned temperature value
Ta；Reach after assigned temperature value Ta, automatically adjusting heater power P is heated systems stay, so that balance system institute
Natural dispersed heat, carries out actively mending temperature to liquid in Water Tank with Temp.-controlled, is allowed to constant in assigned temperature value Ta；
Step 4：When the real time temperature is higher than assigned temperature value Ta, control module controls the refrigeration of the refrigeration module
Device cooling time t1, refrigerating plant is similarly closed according to the thermal relationship of heat release-heat absorption in advance, temperature stabilization is reduced to institute
Need assigned temperature value Ta；Drop to after assigned temperature value Ta, the power P of regulation heating or refrigerating plant is heated or made again
It is cold, Water Tank with Temp.-controlled is carried out actively to mend temperature, makes in Water Tank with Temp.-controlled liquid constant in assigned temperature value Ta；
Further, in the step 3 heat time t by adding a coefficient k in the thermal relationship1Value come true
It is vertical, i.e.,
QInhale=k1·QPut
Wherein, QInhale=Cm Δs T, QPut=Pt, and then Cm Δs T=k1·P·t
Wherein C is specific heat of liquid, and m is Water Tank with Temp.-controlled liquid quality, and Δ T is constant temperature system temperature variation, wherein P
For the heating power of heater, t is the heat time；Determined by experiment and temperature-rise period temperature survey algorithm under the different temperature difference
K1Value, so as to set up on k1Mathematical Modeling：
When needing heating, by measuring the different temperature difference so as to choose corresponding k1Value, just can determine that taking for heat time t
Value, and then reach the constant of temperature.
Further, actively mend in temperature operation to heater power P in the step 3 with the step 4, being heated
The specific selection of value, can be by adding a coefficient k2To determine, setting up model formation is specially：QLose=k2·t′
Wherein, QLoseThe heat lost for this constant temperature system under natural environment, k2For coefficient of heat transfer under the different temperature difference, t ' is
Constant temperature system radiates the time, and constant temperature system absorbs heat will be equal with the heat of constant temperature system natural loss, i.e. QInhale=QLoseNamely
k1Pt=k2T ', due to being same constant temperature system, then constant temperature system internal-external temperature difference is identical, and constant temperature system is scattering and disappearing naturally
Actively heating is carried out while heat and mends temperature, therefore heat time t is also identical with radiating time t ', so：
k1P=k2, i.e.,：
By formulaAs long as determining k2Value, it is possible to obtain power P value；
K under the different temperature difference2Value, can be determined by experiment and temperature constant state temperature survey algorithm.
Further, the cooling time t of refrigerating plant is started in the step 41With starting adding for heater in step 3
Hot time t validation testings are identical.
Advantage of the invention is that：In isoperibol, the system changes traditional passive actively, to enter to constant temperature system
Row actively mends temperature preferably to keep constant temperature；In heat temperature raising, by algorithm make system rapidly and efficiently reach setting
Temperature；Refrigeration module is added, similar heating algorithm is used when needing cooling so that system drops to assigned temperature well, makes
System is more perfect；To meet experiment demand, it may be set in constant under different temperatures in specified range.
Brief description of the drawings
Fig. 1 is the structural representation of this constant temperature system；
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, it is a kind of can continuous alternating temperature constant temperature system,：Including heating module, Water Tank with Temp.-controlled, refrigeration module, prison
Control module and control module, Water Tank with Temp.-controlled built with liquid, described heating module, refrigeration module, monitoring module respectively with institute
Control module connection is stated, described monitoring module, heating module are also connected with the Water Tank with Temp.-controlled respectively with the refrigeration module；
Described host module is connected with the control module；Described monitoring module is used for the temperature of monitor and detection Water Tank with Temp.-controlled, together
When data detection signal is transferred to control module, control module controls the heating module pair according to the data detection signal
The Water Tank with Temp.-controlled is heated, or control module controls the refrigeration module to the perseverance according to the data detection signal
Warm water tank carries out refrigeration cool-down；Initialization system constant temperature corresponding time at regular intervals in certain temperature range, in order to carry out
The test of constant temperature and use.
Further, the heating module is provided with heater, and the power P of the heater is continuously adjustabe and energy
On-line Control, can select suitable heating power to be heated as needed.
Further, refrigeration module is provided with refrigerating plant, and the power P of the refrigerating plant simultaneously can be online for continuously adjustabe
Control, similarly the power P of refrigerating plant is alterable value, can be adjusted as needed.
According to another aspect of the present invention, additionally provide it is a kind of can continuous alternating temperature constant temperature method, it is characterised in that：Including
Following steps,
Step 1：The assigned temperature value Ta that liquid in the Water Tank with Temp.-controlled needs to reach is set on the host module, this
In in described Water Tank with Temp.-controlled the temperature of liquid be this constant temperature system temperature；
Step 2：Monitoring module is detected to the real time temperature of liquid in the Water Tank with Temp.-controlled, obtains temperature value information,
Temperature value information is transferred to control module by the monitoring module；
Step 3：When the real time temperature is less than assigned temperature value Ta, the heating dress on control module control heating module
Put to Water Tank with Temp.-controlled heat time t；Before heating reaches assigned temperature value Ta, heating module releases heat and reaches system
During required heat, heater is closed；According to system thermal relation QInhale=k1·QPut, the QPutHeat is released for heater
Amount, the QInhaleFor the heat of liquid absorption in Water Tank with Temp.-controlled, fluid temperature stabilization in Water Tank with Temp.-controlled is set to be increased to assigned temperature value
Ta；Reach after assigned temperature value Ta, automatically adjusting heater power P is heated systems stay, to select suitable here
Heating power P so that the natural dispersed heat of balance system institute, carries out actively mending temperature to liquid in Water Tank with Temp.-controlled, is allowed to permanent
It is scheduled on assigned temperature value Ta；
Step 4：When the real time temperature is higher than assigned temperature value Ta, control module controls the refrigeration of the refrigeration module
Device cooling time t1, similarly closes refrigerating plant in advance according to the thermal relationship of heat release-heat absorption, temperature stabilization is reduced to institute
Need assigned temperature value Ta；Drop to after assigned temperature value Ta, the power P of regulation heating or refrigerating plant is heated or made again
It is cold, Water Tank with Temp.-controlled is carried out actively to mend temperature, makes in Water Tank with Temp.-controlled liquid constant in assigned temperature value Ta；
Further, in the step 3 heat time t by adding a coefficient k in the thermal relationship1Value come true
It is vertical, i.e.,
QInhale=k1·QPut
Wherein, QInhale=Cm Δs T, QPut=Pt, and then Cm Δs T=k1·P·t
Wherein C is specific heat of liquid, and m is Water Tank with Temp.-controlled liquid quality, and Δ T is constant temperature system temperature variation, and wherein P is
The heating power of heater, t is the heat time, and it is right under the different temperature difference to be determined by experiment and temperature-rise period temperature survey algorithm
The k answered1Value, so as to set up on k1Mathematical Modeling：
When needing heating, by measuring the different temperature difference so as to choose corresponding k1Value, just can determine that taking for heat time t
Value, and then reach the constant of temperature.
Further, actively mend in temperature operation to heater power P in the step 3 with the step 4, being heated
The specific selection of value, can be by adding a coefficient k2To determine, setting up model formation is specially：QLose=k2T ',
Wherein, QLoseThe heat lost for this constant temperature system under natural environment, k2For coefficient of heat transfer under the different temperature difference, t ' is
Constant temperature system radiates the time, and constant temperature system absorbs heat will be equal with the heat of constant temperature system natural loss, i.e. QInhale=QLoseNamely
k1Pt=k2T ', due to being same constant temperature system, then constant temperature system internal-external temperature difference is identical, and constant temperature system is scattering and disappearing naturally
Actively heating is carried out while heat and mends temperature, therefore heat time t is also identical with radiating time t ', so：k1P=k2, i.e.,：By formulaAs long as determining k2Value, it is possible to obtain power P value；K under the different temperature difference2Value, can lead to
Cross experiment and related temperature constant state temperature survey algorithm is determined.
Further, the cooling time t of refrigerating plant is started in the step 4 with starting adding for heater in step 3
Hot time t1Validation testing is identical.
Associated temperature Measurement Algorithm is used in the present invention, and thereby determines that heating, mend temperature model and parameter k1And k2Take
Value, it is specific as follows：
1st, temperature-rise period temperature survey algorithm：
Due in constant temperature system temperature-rise period, due to factors such as natural loss, heating module is caused to release heat QPutAnd
It can not be fully absorbed completely by liquid in system, it is assumed that liquid absorbs heat for QInhale, according to heat conservation relation, set up mould
Type formula then has, QInhale=k1·QPut, wherein, QInhale=Cm Δs T, QPut=Pt, and then Cm Δs T=k1Pt, wherein
C is specific heat of liquid, and m is Water Tank with Temp.-controlled liquid quality, and Δ T is constant temperature system temperature variation, the i.e. temperature difference, and wherein P is heating
The heating power of device, t is the heat time.
It can be obtained by above-mentioned formula：
In formula, C, m, Δ T, P are definite value, due to parameter k1Can be by external environment, system heat-insulating property, internal-external temperature difference etc.
The influence of factor, so parameter k1It is not a fixed parameter, it will be a variable being continually changing, is sent out by testing
Existing k1Value relation in line approximate with time t, using least square method to experimental data carry out fitting a straight line, can be very
Good obtains k1Value and time t corresponding relation, so as to obtain parameter k1Value model.
2nd, temperature constant state temperature survey algorithm：
System is in temperature constant state, because system can be by factors such as external environment, system heat-insulating property, internal-external temperature differences
Influence, causes constant temperature system meeting natural loss heat, so as to cause the change of system temperature, thus sets up model formation as follows：
QLose=k2·t′
Wherein, QLoseThe heat lost for this constant temperature system under natural environment, k2For coefficient of heat transfer under the different temperature difference, t ' is
Constant temperature system radiates the time.Because thermal loss causes the change of temperature, so as to have：
QLose=Cm Δs T
It can be obtained by above-mentioned formula：
K is found through experiments that2Value and the time also approximate relation in line, using least square method to experimental data
Fitting a straight line is carried out, can be very good to obtain k2Value and the corresponding relation of time, so as to obtain parameter k2Value model.
3rd, temperature-fall period temperature survey algorithm：
Temperature-fall period parameter value model is similar with temperature-rise period, is not repeated.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent and improvement made within refreshing and principle etc., should be included within the scope of the present invention.
Claims (7)
1. it is a kind of can continuous alternating temperature constant temperature system, it is characterised in that：Including heating module, Water Tank with Temp.-controlled, refrigeration module, monitoring
Module, control module and host module, described heating module, refrigeration module, monitoring module connect with the control module respectively
Connect, described monitoring module, heating module are also connected with the Water Tank with Temp.-controlled respectively with the refrigeration module；Described main frame mould
Block is connected with the control module；Described monitoring module is used for the temperature of monitor and detection Water Tank with Temp.-controlled, while detection data
Signal transmission controls the heating module to the Water Tank with Temp.-controlled to control module, control module according to the data detection signal
Heated, or control module controls the refrigeration module to the Water Tank with Temp.-controlled system according to the data detection signal
Cold cooling；The temperature value of the constant temperature system is set on the host module, the host module transmits temperature value information
To the control module.
2. it is as claimed in claim 1 it is a kind of can continuous alternating temperature constant temperature system, it is characterised in that：The heating module is provided with
Heater, the power P of the heater is continuously adjustabe and energy On-line Control.
3. it is as claimed in claim 1 it is a kind of can continuous alternating temperature constant temperature system, it is characterised in that：Refrigeration module is stated provided with system
Device for cooling, the power P of the refrigerating plant is continuously adjustabe and energy On-line Control.
4. it is a kind of based on described in claim 1-3 can the continuous constant temperature system of alternating temperature constant temperature method, it is characterised in that：Including such as
Lower step,
Step 1：The assigned temperature value Ta that liquid in the Water Tank with Temp.-controlled needs to reach is set on the host module；
Step 2：Monitoring module is detected to the real time temperature of liquid in the Water Tank with Temp.-controlled, obtains temperature value information, described
Temperature value information is transferred to control module by monitoring module, the assigned temperature value Ta that control module sets host module with real time
Temperature value is contrasted, so that it is determined that system needs to heat or freezed；
Step 3：When the real time temperature is less than assigned temperature value Ta, the heater pair on control module control heating module
Water Tank with Temp.-controlled heat time t；According to thermal relationship, the QPutHeat, the Q are released for heaterInhaleFor Water Tank with Temp.-controlled
The heat of interior liquid absorption, heating reaches before assigned temperature value Ta that heating module releases heat and reaches heat required for system
When, heater is closed, fluid temperature stabilization in Water Tank with Temp.-controlled is increased to assigned temperature value Ta；Reach assigned temperature value Ta
Afterwards, the power P of regulation heater is heated, and liquid in Water Tank with Temp.-controlled is carried out actively to mend temperature, is allowed to constant and is being specified temperature
Angle value Ta；
Step 4：When the real time temperature is higher than assigned temperature value Ta, control module controls the refrigerating plant of the refrigeration module
Cooling time t1, refrigerating plant is similarly closed according to the thermal relationship of heat release-heat absorption in advance, temperature stabilization is reduced to required finger
Constant temperature angle value Ta；Drop to after assigned temperature value Ta, the power P that heater is adjusted again is heated, Water Tank with Temp.-controlled is carried out
Temperature is actively mended, makes fluid temperature in Water Tank with Temp.-controlled constant in assigned temperature value Ta.
5. it is as claimed in claim 4 it is a kind of can continuous alternating temperature constant temperature method, it is characterised in that：When being heated in the step 3
Between t by adding a coefficient k in thermal relationship1Value establish, i.e.,
QInhale=k1·QPut
Wherein, QInhale=Cm Δs T, QPut=Pt, and then Cm Δs T=k1Pt, wherein C are specific heat of liquid, and m is
Water Tank with Temp.-controlled liquid quality, Δ T is temperature variation, and wherein P is the heating power of heater, and t is the heat time；Pass through reality
Test and temperature-rise period temperature survey algorithm determines k under different temperature difference T1Value, so as to set up on k1Mathematical Modeling：
When needing heating, by measuring different temperature difference T so as to choose corresponding k1Value, just can determine that taking for heat time t
Value, and then reach the constant of temperature.
6. it is as claimed in claim 4 it is a kind of can continuous alternating temperature constant temperature method, it is characterised in that：With institute in the step 3
State in step 4, the specific selection to heater power P value in temperature operation is actively mended in heating, can be by adding a coefficient k2Come
It is determined that, setting up model formation is specially：QLose=k2T ' wherein, QLoseThe heat lost for this constant temperature system under natural environment, k2
For coefficient of heat transfer under the different system temperature difference, t ' is that constant temperature system radiates the time, and constant temperature system absorbs heat will be with constant temperature system certainly
The heat so lost is equal, i.e. QInhale=QLoseThat is k1Pt=k2T ', due to being same constant temperature system, then inside and outside constant temperature system
The temperature difference is identical, and constant temperature system carries out actively heating while natural dissipated heat and mends temperature, therefore heat time t is with the radiating time
T ' is also identical, so：
k1P=k2, i.e.,：
By formulaK is determined again2Value, it is possible to obtain power P value；K under the different temperature difference herein2Value, passes through experiment
And temperature constant state temperature survey algorithm is determined.
7. it is as claimed in claim 4 it is a kind of can continuous alternating temperature constant temperature method, it is characterised in that：Start system in the step 4
The cooling time t of device for cooling1It is identical with the heat time t validation testing for starting heater in step 3.
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| CN108628358A (en) * | 2018-04-23 | 2018-10-09 | 中国科学院理化技术研究所 | A kind of constant temperature system |
| CN110825133A (en) * | 2019-10-29 | 2020-02-21 | 深圳市裕展精密科技有限公司 | Temperature control method, device and computer readable storage medium |
| CN111227962A (en) * | 2020-02-26 | 2020-06-05 | 浙江隐齿丽医学技术有限公司 | Film pressing control system and method for preparing shell-shaped tooth appliance |
| CN113640335A (en) * | 2021-08-12 | 2021-11-12 | 醴陵华鑫电瓷科技股份有限公司 | Temperature cycle test system for ceramic products |
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| CN113640335A (en) * | 2021-08-12 | 2021-11-12 | 醴陵华鑫电瓷科技股份有限公司 | Temperature cycle test system for ceramic products |
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Application publication date: 20170714 |