CN112731985A - Dustproof and moistureproof device for regulating and controlling environment temperature of precision instrument with high precision - Google Patents
Dustproof and moistureproof device for regulating and controlling environment temperature of precision instrument with high precision Download PDFInfo
- Publication number
- CN112731985A CN112731985A CN202011555890.4A CN202011555890A CN112731985A CN 112731985 A CN112731985 A CN 112731985A CN 202011555890 A CN202011555890 A CN 202011555890A CN 112731985 A CN112731985 A CN 112731985A
- Authority
- CN
- China
- Prior art keywords
- temperature
- program control
- control switch
- thermoelectric module
- precision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001276 controlling effect Effects 0.000 title claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 20
- 239000004065 semiconductor Substances 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 230000007613 environmental effect Effects 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims description 25
- 238000005057 refrigeration Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000009529 body temperature measurement Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a dustproof and moistureproof device for regulating and controlling the environmental temperature of a precision instrument with high precision. The device obtains the temperature in the sealed environment box through the temperature measuring module, and the PID temperature controller controls the temperature control circuit to enable the semiconductor thermoelectric module TEC to work in a refrigerating or heating mode, so that the temperature of the sealed environment box is accurately regulated and controlled. Because the device only exchanges heat with the outside and does not exchange substances, the device can provide a long-term stable temperature, humidity and dust-free environment for a laser or other precise instruments sensitive to temperature. The temperature control device provided by the invention has the advantages of compact structure, stable performance, low power consumption and high temperature control precision, and can improve the stability of the performance of a precision instrument, improve the measurement precision and prolong the service life.
Description
Technical Field
The invention belongs to the field of environmental temperature regulation and control of precision instruments, and particularly relates to a dustproof and moistureproof device for regulating and controlling the environmental temperature of a precision instrument at high precision.
Background
Because the operating environment temperature of the laser can influence the spectral stability of the output laser, in an environment with unstable temperature, the change of the environment temperature can interfere the work of the laser, and the change of the environment temperature can cause the drift of the laser wavelength and the power, thereby influencing the use of the laser. When laser pumping is performed, the absorption probability of atoms and molecules to incident light is influenced by laser wavelength shift, and the pumping efficiency is influenced by power shift. In addition, the change of the environmental temperature can also affect the working state of optical components in the laser system, for example, the parameters of the grating can change due to the temperature change, thereby affecting the system stability. Therefore, in practical applications, it is necessary to control the ambient temperature of the laser with high precision so that the laser operates at a relatively stable temperature, and to improve the stability and quality of the output laser.
Environmental temperature control and dust and moisture prevention of existing lasers or other precision instruments generally depend on laboratory environments, such as a clean room additionally provided with a professional central air conditioner. On one hand, the solution has long time consumption, high cost and high power consumption, and is used for controlling the temperature of the whole space for a very few core devices needing precise temperature control; on the other hand, this solution is clearly impractical when working in the field and out-field.
The patent (CN105094173B) discloses a temperature control system of a semiconductor laser and a control method thereof, wherein a temperature control system of a semiconductor laser comprising a temperature sampling circuit, a display module, an alarm module and the like is provided, and a double PID series control algorithm is adopted to realize automatic temperature control; the patent (CN103094818A) discloses a method and a system for controlling the temperature of an excimer laser, wherein a method and a system for controlling the temperature of an excimer laser are proposed, which achieve the purpose of temperature control by using a neural network method through a heat exchange system, a water cooling system, a controller, and the like. The two systems have many components, long realization period and complex data processing method, and can only adjust the temperature of the laser, but cannot control the ambient temperature of the laser. In order to ensure the stability of the ambient temperature of temperature sensitive devices such as lasers, the prior art mostly adopts a mode of making the whole space into a constant temperature and humidity laboratory, but the prior art has the following defects: firstly, the cost is high, the waste is serious, and as the core devices sensitive to the temperature usually only occupy a small part of the system devices in the whole system; second, the system is bulky and cumbersome to install, and such a solution is inconvenient in many situations, such as field, field work, or battlefield military use; thirdly, the solution generally needs to use a conventional air compressor air conditioner, so that the exchange of substances between a temperature control space and the outside cannot be avoided, the problems of dust prevention and dehumidification are solved, the cost is higher if the environment where a precision instrument is located is made into a clean room, the temperature control is difficult to realize, and the precision is limited; fourth, this type of solution is very energy intensive.
For example, the heat generated by such devices as a computer CPU and a power amplifier is severe due to the limitation of chip size or large working current, and the currently used method is to use a mechanical fan to convectively take away heat, which is a cooling method: firstly, the exchange with a large amount of substances from the outside causes problems of dust collection and humidity, which affects the performance, service life and user experience of the device; secondly, this kind of mode can not provide a stable operational environment, and the high machine case temperature of ambient temperature is high, and the high machine case humidity of ambient humidity is high, and hardly there is the temperature control precision to say.
Disclosure of Invention
In view of the above, the present invention provides a device for controlling the environmental temperature of a precision instrument with high precision and preventing dust and moisture, which has the advantages of low cost, simple system structure, no exchange with the outside, and realization of both cooling and heating, thereby realizing precise temperature control.
The invention specifically adopts the following technical scheme:
a device for regulating and controlling the environmental temperature of a precision instrument with high precision and preventing dust and moisture comprises a double-channel PID controller, a temperature control circuit, a temperature measurement module, the precision instrument, a sealed environment box, a temperature transmission fan, a semiconductor thermoelectric module TEC, a radiating fin, a filter screen, a reserved window and an instrument base; the connection relation is as follows: the PID controller is connected with the temperature control circuit and the temperature measurement module, a precision instrument placed on an instrument base and a filter screen are all placed in a sealed environment box, the semiconductor thermoelectric module TEC is placed between two radiating fins, a temperature transmission fan is respectively arranged inside and outside the sealed environment box, a window is reserved for light transmission between the internal environment and the external environment of the sealed environment box, and sealing is performed by adopting sealing glue during installation so as to ensure the sealing performance of the sealed environment box; the precision instrument is fixed on the inner bottom panel of the sealed environment box through the instrument base; the measuring end of the temperature measuring module is arranged at the central position of the sealed environment box; the whole sealed environment box is sealed so as to exchange heat with the outside only through the semiconductor thermoelectric module TEC without exchanging substances; the working process of the device is as follows: the dual-channel PID controller obtains the temperature in the sealed environment box through the temperature measuring module, and controls the on-off of the temperature control circuit through the dual-channel PID controller after operation so as to control the working mode of the semiconductor thermoelectric module TEC, thereby completing the control of the temperature of the environment box.
Further, the working modes of the device for regulating and controlling the environment temperature of the precision instrument with high precision and preventing dust and moisture comprise a heating mode and a cooling mode.
Firstly, when the dual-channel PID controller is not outputting heating output and cooling, a voltage difference is generated between the positive end and the negative end of the heating output, the program control switch A and the program control switch B are in a conducting state, the positive output and the ground of the direct current power supply are loaded to the Y1 and Y2 ends of the semiconductor thermoelectric module TEC, a heating loop is started, and the semiconductor thermoelectric module TEC is in a heating state;
when the dual-channel PID controller outputs refrigeration and does not output heating, the heating output is zero, the inverter generates an output signal of forward voltage, the program control switch C is conducted, the program control switch D and the program control switch E are in a conducting state, reverse loading voltage of the direct current power supply is obtained at the two ends of Y1 and Y2 of the semiconductor thermoelectric module TEC, the refrigeration loop is started, and the semiconductor thermoelectric module TEC is in a refrigeration state;
when the control signals of the refrigeration and heating of the dual-channel PID controller are simultaneously output, the control signal of the program control switch C is zero after the heating output signal passes through the phase inverter, so that the refrigeration loop is in a disconnected state, only the heating loop is started, and the semiconductor thermoelectric module TEC is in a heating state to avoid the short circuit of the temperature control circuit.
Furthermore, the device is used for regulating and controlling the environment temperature of the precision instrument with high precision and preventing dust and moisture, and the temperature control circuit comprises a direct-current power supply, a program control switch A, a program control switch B, a program control switch C, a program control switch D, program control switches E (2-6) and a phase inverter.
Furthermore, the device is used for regulating and controlling the environment temperature of the precision instrument with high precision and preventing dust and moisture, and the program control switch A, the program control switch B, the program control switch C, the program control switch D and the program control switch E can adopt any one of a solid-state relay, a coil type relay or a contactor.
Further, when each program control switch selects the solid relay and the channel I of the double-channel PID controller controls the heating output, the connection relationship of each component of the sealed environment box is as follows:
the positive end of the heating output of the PID temperature controller is respectively connected with the A2 end of the program control switch A, the A2 end of the program control switch B and the input positive end of the inverter by leads, and the negative end of the heating output of the PID temperature controller is connected with the A1 end of the program control switch A, the A1 end of the program control switch B and the input negative end of the inverter;
the T end of the program control switch A is connected with the positive output end of the direct-current power supply through a lead, and the L end of the program control switch A is connected with the input end Y1 of the semiconductor thermoelectric module TEC;
the T end of the program control switch B is connected with the output ground end of the direct-current power supply through a lead; the L end of the program control switch B is connected with the input end Y2 of the semiconductor thermoelectric module TEC;
when each program control switch selects a solid relay and a channel II of the double-channel PID controller controls refrigeration output, the connection relationship of each component of the sealed environment box is as follows:
the positive end of the cooling output of the PID temperature controller is connected with the T end of the program control switch C, the L end of the program control switch C is respectively connected with the A2 ends of the program control switch D and the program control switch E through leads, and the negative end of the cooling output of the PID temperature controller is respectively connected with the A1 ends of the program control switch D and the program control switch E;
the positive and negative output terminals of the inverter are respectively connected with the A2 terminal and the A1 terminal of the program-controlled switch C by leads;
the T end of the program control switch D is connected with the positive output end of the direct-current power supply, and the L end of the program control switch D is connected with the input end Y2 of the semiconductor thermoelectric module TEC;
the T end of the program control switch E is connected with the output negative end of the direct-current power supply, and the L end of the program control switch E is connected with the input end Y1 of the semiconductor thermoelectric module TEC;
furthermore, the device is used for high-precision regulation and control of the environmental temperature of the precision instrument and is dustproof and moisture-proof, the sealed environment box is a cuboid-shaped sealed insulation box, the top surface or any side surface of the box body is provided with a semiconductor thermoelectric module TEC mounting hole and a reserved window mounting hole, each hole is provided with a sealing strip, and the sealed environment box is made of a low-thermal-conductivity material; the semiconductor thermoelectric module TEC and the reserved window are fixedly arranged on the semiconductor thermoelectric module TEC mounting hole and the reserved window mounting hole of the box body respectively.
Furthermore, the dustproof and moistureproof device is used for regulating and controlling the environment temperature of the precision instrument with high precision, and the filter screen is arranged below the temperature transmission fan.
Furthermore, the device is used for regulating and controlling the environmental temperature and preventing dust and moisture of the precision instrument with high precision, and the precision instrument is any one of a laser, a power amplifier circuit, a computer or other precision instruments needing precise temperature control and dust and moisture prevention.
The device controls the heating or the refrigeration of the sealed environment box by controlling the direction of the current flowing into the TEC, and is convenient to realize and low in cost; the temperature control efficiency of the system and the volume of the environment box can be changed by simply increasing and decreasing the number of the TECs; because the device only exchanges heat with the outside and does not exchange substances, the device can be made into a closed system to achieve the functions of moisture prevention and dust prevention, and because the filter screen is additionally arranged below the temperature transmission fan in the sealed environment box, the effect of further dust prevention can be achieved, the temperature control precision of the temperature control device is very high, and the temperature control precision of +/-0.1 ℃ can be rapidly achieved.
The device is used for high-precision regulation and control of the environmental temperature of the precision instrument and the dust and moisture prevention device without external substance exchange, can provide stable and reliable temperature, humidity and clean environment for the precision instrument, can realize refrigeration and heating, and overcomes the limitation that the traditional laser temperature control device can not regulate the environmental temperature and can only refrigerate.
Drawings
FIG. 1 is a structural diagram of a device for controlling the environmental temperature of a precision instrument with high precision and preventing dust and moisture according to the present invention;
FIG. 2 is a temperature control circuit diagram of the device for controlling the environmental temperature of a precision instrument with high precision and preventing dust and moisture according to the present invention;
FIG. 3 is a diagram illustrating the operation of the present invention when applied to a laser;
FIG. 4 is a temperature control circuit diagram of the temperature control circuit when the programmable switch is selected as the coil relay;
in the figure, 1 is a double-channel PID controller 2, a temperature control circuit 3, a temperature measurement module 4, a precision instrument 5, a sealed environment box 6, a temperature transmission fan 7, a semiconductor thermoelectric module TEC 8, a radiating fin 9, a filtering screen 10, a reserved window 11, an instrument bottom 2-1, a direct current power supply 2-2, a program control switch A2-3, a program control switch B2-4, a program control switch C2-5, a program control switch D2-6, a program control switch E2-7 and an inverter.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
A dustproof and moisture-proof device for regulating and controlling the environmental temperature of a precision instrument with high precision is characterized in that the structure diagram is shown in fig. 1 and fig. 2, and the device comprises a dual-channel PID controller 1, a temperature control circuit 2, a temperature measurement module 3, the precision instrument 4, a sealed environment box 5, a temperature transmission fan 6, a semiconductor thermoelectric module TEC7, a radiating fin 8, a filter screen 9, a reserved window 10 and an instrument base 11; the connection relation is as follows: the PID controller 1 is connected with the temperature control circuit 2 and the temperature measurement module 3, the precision instrument 4 arranged on the instrument base 11 and the filter screen 9 are all arranged in the sealed environment box 5, the semiconductor thermoelectric module TEC7 is arranged between the two radiating fins 8, the inside and the outside of the sealed environment box are respectively provided with a temperature transmission fan 6, a reserved window 10 is used for light transmission between the internal environment and the external environment of the sealed environment box 5, and sealing glue is adopted for sealing during installation so as to ensure the sealing performance of the sealed environment box; the precision instrument is fixed on the inner bottom panel of the sealed environment box 5 through the instrument base; the measuring end of the temperature measuring module 3 is arranged at the central position of the sealed environment box 5; the whole sealed environment box 5 can be sealed so as to exchange heat with the outside only through the semiconductor thermoelectric module TEC, and has no matter exchange; the working process of the device is as follows: the dual-channel PID controller 1 obtains the temperature in the sealed environment box 5 through the temperature measuring module 3, and the dual-channel PID controller 1 controls the on-off of the temperature control circuit 2 after operation so as to control the working mode of the semiconductor thermoelectric module TEC7, thereby completing the control of the temperature of the environment box.
Further, the operation modes include two operation modes, namely a heating mode and a cooling mode.
When the dual-channel PID controller is not outputting heating output and cooling, a voltage difference is generated between the positive electrode end and the negative electrode end of the heating output, the program control switch A2-2 and the program control switch B2-3 are in a conducting state, the positive electrode output of the direct current power supply and the ground are loaded to the two ends Y1 and Y2 of the semiconductor thermoelectric module TEC7, a heating loop is started, and the semiconductor thermoelectric module TEC7 is in a heating state.
When the dual-channel PID controller outputs refrigeration and does not output heating, the heating output is zero, the inverter generates an output signal of forward voltage, the program control switch C2-4 is conducted, the program control switch D2-5 and the program control switch E2-6 are in a conducting state, reverse loading voltage of a direct current power supply is obtained at two ends of Y1 and Y2 of the semiconductor thermoelectric module TEC7, the refrigeration loop is started, and the semiconductor thermoelectric module TEC7 is in a refrigeration state.
When the PID temperature controller outputs cooling and heating at the same time, after a heating output signal passes through the phase inverter, a control signal of the program control switch C2-4 is zero, so that a cooling loop is in a disconnected state, only a heating loop is started, and the semiconductor thermoelectric module TEC7 is in a heating state.
Further, the temperature control circuit 2 comprises a direct current power supply 2-1, a program control switch A2-2, a program control switch B2-3, a program control switch C2-4, a program control switch D2-5, a program control switch E2-6 and an inverter 2-7.
Furthermore, the programmable switch A2-2, the programmable switch B2-3, the programmable switch C2-4, the programmable switch D2-5 and the programmable switch E2-6 can adopt any one of a solid-state relay, a coil-type relay or a contactor.
Further, when each program control switch selects a solid relay and the channel I of the double-channel PID controller 1 controls heating output, the connection relationship of each component of the sealed environment box is as follows: for the sake of simplicity and clarity, the control voltage positive input terminal, the control voltage negative input terminal, the load power input terminal, and the load power output terminal of the programmable switch are respectively represented by a2, a1, and T, L:
the positive terminal of the heating output of the PID temperature controller is respectively connected with the A2 terminal of the program control switch A2-2, the A2 terminal of the program control switch B2-3 and the input positive terminal of the inverter 2-7 through wires, and the negative terminal of the heating output of the PID temperature controller is connected with the A1 terminal of the program control switch A2-2, the A1 terminal of the program control switch B2-3 and the input negative terminal of the inverter 2-7.
The T end of the program control switch A (2-2) is connected with the positive output end of the direct current power supply through a lead, and the L end of the program control switch A (2-2) is connected with the input end Y1 of the semiconductor thermoelectric module TEC (7);
the T end of the program control switch B (2-3) is connected with the output ground end of the direct current power supply by a lead; the L end of the program control switch B is connected with the input end Y2 of the semiconductor thermoelectric module TEC (7);
further, when each program control switch selects a solid relay and the channel II of the double-channel PID controller 1 controls the refrigeration output, the connection relationship of each component of the sealed environment box is as follows:
the positive end of the cooling output of the PID temperature controller is connected with the T end of the program control switch C2-4, the L end of the program control switch C2-4 is respectively connected with the A2 ends of the program control switch D2-5 and the program control switch E2-6 through leads, and the negative end of the cooling output of the PID temperature controller is respectively connected with the A1 ends of the program control switch D2-5 and the program control switch E2-6;
the positive and negative output terminals of the inverters 2-7 are respectively connected with the A2 terminal and the A1 terminal of the program-controlled switch C2-4 by leads;
the T end of the program control switch D2-5 is connected with the positive output end of the direct-current power supply, and the L end of the program control switch D is connected with the Y2 input end of the semiconductor thermoelectric module TEC 7;
the T end of the program control switch E2-6 is connected with the output negative end of the direct-current power supply, and the L end of the program control switch E is connected with the input end Y1 of the semiconductor thermoelectric module TEC 7;
when each program control switch adopts a coil type relay, because the coil type relay is provided with a plurality of coil contacts, a control loop can be realized by using two groups of coil type relays, and the connection diagram of a temperature control circuit is shown in figure 4.
Further, the sealed environment box 5 is a cuboid-shaped sealed heat preservation box, semiconductor thermoelectric module TEC mounting holes and reserved window mounting holes are formed in the top surface or any side surface of the box body, sealing strips are mounted in the holes, and sealing glue is applied to the holes so as to achieve the effect of sealing the whole box body, and the box body is made of a low-thermal-conductivity material so as to achieve the effect of heat preservation; the semiconductor thermoelectric module TEC and the reserved window 9 are fixedly arranged on the mounting hole of the semiconductor thermoelectric module TEC and the mounting hole of the reserved window of the box body respectively.
Further, the filter screen 9 is installed below the temperature transmission fan and used for filtering dust in air in the sealed environment box, and the dust filtering effect is coarse effect so as to achieve the effect of further dust removal.
Furthermore, the high-precision regulating and controlling precision instrument is any one of a laser, a power amplifier circuit, a computer or other instrument equipment which is suitable for the invention and needs precise temperature control. The invention can be used for temperature regulation devices of instruments which are extremely sensitive to the ambient temperature, such as lasers and the like.
In the application of the invention, carriers of the heating loop and the refrigerating loop are both semiconductor thermoelectric modules TEC, and if the heating loop and the refrigerating loop are started simultaneously, the short circuit condition of a direct-current power supply can be caused, so that the combined use of the phase inverter and the amplifying circuit C realizes the interlocking function of heating and refrigerating.
The device for regulating and controlling the environmental temperature of the precision instrument with high precision has the characteristics of simple structure and reliable performance. Aiming at the problem that temperature sensitive equipment such as a laser and the like has unstable performance under fluctuating ambient temperature, the device adopts a semiconductor as a common temperature adjusting medium for refrigeration and heating, and the problems of complex system structure and inconvenient use of a conventional temperature adjusting system adopting heating wires for heating and cooling water for refrigeration are avoided. Meanwhile, an interlocking circuit formed by the phase inverter and the program control switch C is adopted, and the power supply short circuit condition possibly occurring in the conventional double-output temperature controller in the application is avoided. The invention can be used for high-precision regulation and control of the constant-temperature dehumidification dust-free environment of a laser or other precision instruments or computer equipment or devices, ensures the stability of the device performance, and has good application prospect.
The invention is used for high-precision regulation and control of the environment temperature of a precision instrument and a dustproof and moistureproof device. Because the device only exchanges heat with the outside and does not exchange substances, the device can provide a long-term stable temperature, humidity and dust-free environment for a laser or other precise instruments sensitive to temperature. The temperature control device provided by the invention has the advantages of compact structure, stable performance, low power consumption and high temperature control precision, and can improve the stability of the performance of a precision instrument, improve the measurement precision and prolong the service life. The device can also change the temperature adjusting capacity of the device by simply increasing and decreasing the number of the TECs, so that high-precision temperature control cavities with different heat exchange capacities and different sizes can be manufactured.
After the implementation, the invention can realize high-precision control on the environment temperature of the laser, the temperature control precision is about +/-0.1 ℃, and after the temperature control device is used, the stability effect of the output wavelength of the laser is obvious when the temperature control is not used, as shown in figure 3.
In addition, the precise instrument can be a power amplifier circuit, and when the device is used for the power amplifier circuit, the program-controlled switch A2-2, the program-controlled switch B2-3, the program-controlled switch C2-4, the program-controlled switch D2-5 and the program-controlled switch E2-6 can be realized by adopting any relay or contactor.
The invention can also be used as a computer, when the device is applied to a moisture-proof and dust-proof case for the computer, by adopting the device technology, the computer case is made into a sealing system, a semiconductor thermoelectric module and a radiating fin with heat exchange capacity reaching kilowatt level are arranged on one side surface or the top surface of the case, and the environment where power consumption elements such as a CPU (central processing unit), a display card and the like in the case are located is refrigerated and temperature-controlled. When the function is used, the PID temperature control program can be loaded by a computer, so that the cost of the temperature controller is saved.
The precision instrument of the present invention may also be other devices that require precise temperature control and are suitable for use in the present invention. The temperature control precision of the invention is limited by the used temperature controller and temperature sensor, and obviously the same technology can achieve higher temperature control precision under the condition of a better temperature controller and a more accurate temperature sensor. The particular temperature control circuit embodiment of the present invention is but one of the many possibilities that is easy. All relevant embodiments are exemplary and not exhaustive, and the invention is in no way limited to only these embodiments. Many modifications and variations are possible and apparent without departing from the scope and spirit of embodiments of the invention.
Claims (9)
1. A device for high-precision regulation and control of environmental temperature and dust and moisture prevention of a precision instrument is characterized by comprising a dual-channel PID controller (1), a temperature control circuit (2), a temperature measurement module (3), the precision instrument (4), a sealed environment box (5), a temperature transmission fan (6), a semiconductor thermoelectric module TEC (7), a cooling fin (8), a filter screen (9), a reserved window (10) and an instrument base (11); the connection relation is as follows: the PID controller (1) is connected with a temperature control circuit (2) and a temperature measurement module (3), the temperature measurement module (3), a precision instrument (4) placed on an instrument base (11) and a filter screen (9) are placed in a sealed environment box (5), a semiconductor thermoelectric module TEC (7) is placed between two cooling fins (8), a heat transfer fan (6) is respectively arranged inside and outside the sealed environment box, a reserved window (10) is used for light transmission between the internal environment and the external environment of the sealed environment box (5), and sealing is adopted during installation to ensure the sealing performance of the sealed environment box; the precision instrument is fixed on the inner bottom panel of the sealed environment box (5) through an instrument base; the measuring end of the temperature measuring module (3) is arranged at the central position of the sealed environment box (5); the whole sealed environment box (5) is sealed so as to exchange heat with the outside only through the semiconductor thermoelectric module TEC, and no matter is exchanged; the working process of the device is as follows: the double-channel PID controller (1) obtains the temperature in the closed environment box (5) through the temperature measuring module (3), and the double-channel PID controller (1) controls the on-off of the temperature control circuit (2) after operation so as to control the working mode of the semiconductor thermoelectric module TEC (7), thereby completing the control of the temperature of the closed environment box.
2. The apparatus according to claim 1, wherein the operation modes include two operation modes, i.e. heating mode and cooling mode:
firstly, when the dual-channel PID controller is not used for heating output and cooling, a voltage difference is generated between the positive end and the negative end of the heating output, the program control switch A (2-2) and the program control switch B (2-3) are in a conducting state, the positive output and the ground of the direct current power supply are loaded to the Y1 and Y2 ends of the semiconductor thermoelectric module TEC (7), a heating loop is started, and the semiconductor thermoelectric module TEC (7) is in a heating state;
when the dual-channel PID controller outputs refrigeration and does not output heating, the heating output is zero, the inverter generates an output signal of forward voltage, the program control switch C (2-4) is conducted, the program control switch D (2-5) and the program control switch E (2-6) are in a conducting state, reverse loading voltage of the direct current power supply is obtained at two ends of Y1 and Y2 of the semiconductor thermoelectric module TEC (7), a refrigeration loop is started, and the semiconductor thermoelectric module TEC (7) is in a refrigeration state;
when the control signals of the refrigeration and heating of the dual-channel PID controller are simultaneously output, after the heating output signal passes through the phase inverter, the control signal of the program control switch C (2-4) is zero, so that the refrigeration loop is in a disconnected state, only the heating loop is started, and the semiconductor thermoelectric module TEC (7) is in a heating state to avoid the short circuit of the temperature control circuit.
3. The device for regulating and controlling the environmental temperature of the precision instrument with high precision and preventing dust and moisture as claimed in claim 1, wherein the temperature control circuit (2) comprises a direct current power supply (2-1), a programmable switch A (2-2), a programmable switch B (2-3), a programmable switch C (2-4), a programmable switch D (2-5), a programmable switch E (2-6) and an inverter (2-7).
4. The device for accurately regulating and controlling the environmental temperature of a precision instrument and preventing dust and moisture according to claim 3, wherein the programmable switch A (2-2), the programmable switch B (2-3), the programmable switch C (2-4), the programmable switch D (2-5) and the programmable switch E (2-6) can be any one of a solid-state relay, a coil relay or a contactor.
5. The device for regulating and controlling the environmental temperature of the precision instrument with high precision and preventing dust and moisture as claimed in claim 3, wherein when the program control switches are solid relays and the channel I of the dual-channel PID controller (1) controls the heating output, the connection relationship of the components of the sealed environment box is as follows:
the positive end of the heating output of the PID temperature controller is respectively connected with the A2 end of the program control switch A (2-2), the A2 end of the program control switch B (2-3) and the input positive end of the inverter (2-7) through leads, and the negative end of the heating output of the PID temperature controller is connected with the A1 end of the program control switch A (2-2), the A1 end of the program control switch B (2-3) and the input negative end of the inverter (2-7);
the T end of the program control switch A (2-2) is connected with the positive output end of the direct current power supply through a lead, and the L end of the program control switch A (2-2) is connected with the input end Y1 of the semiconductor thermoelectric module TEC (7);
the T end of the program control switch B (2-3) is connected with the output ground end of the direct current power supply by a lead; and the L end of the program control switch B is connected with the input end Y2 of the semiconductor thermoelectric module TEC (7).
6. The device for regulating and controlling the environmental temperature of the precision instrument with high precision and preventing dust and moisture as claimed in claim 3, wherein when the program control switches are solid relays and the channel II of the dual-channel PID controller (1) controls the refrigeration output, the connection relationship of the components of the sealed environment box is as follows:
the positive end of the cooling output of the PID temperature controller is connected with the T end of the program control switch C (2-4), the L end of the program control switch C (2-4) is respectively connected with the A2 ends of the program control switch D (2-5) and the program control switch E (2-6) through leads, and the negative end of the cooling output of the PID temperature controller is respectively connected with the A1 ends of the program control switch D (2-5) and the program control switch E (2-6);
the positive and negative output terminals of the inverter (2-7) are respectively connected with the A2 terminal and the A1 terminal of the program-controlled switch C (2-4) by leads;
the T end of the program control switch D (2-5) is connected with the positive output end of the direct-current power supply, and the L end of the program control switch D is connected with the input end Y2 of the semiconductor thermoelectric module TEC (7);
the T end of the program control switch E (2-6) is connected with the output negative end of the direct current power supply, and the L end of the program control switch E is connected with the input end Y1 of the semiconductor thermoelectric module TEC (7).
7. The device for regulating and controlling the environmental temperature of the precision instrument with high precision and preventing dust and moisture as claimed in claim 1, wherein the sealed environment box (5) is a cuboid-shaped sealed heat preservation box, the top surface or any side surface of the box body is provided with a semiconductor thermoelectric module TEC mounting hole and a reserved window mounting hole, each hole is provided with a sealing strip, and the box body is made of a low-thermal conductivity material; the semiconductor thermoelectric module TEC and the reserved window (9) are respectively and fixedly installed on the semiconductor thermoelectric module TEC installation hole and the reserved window installation hole of the box body.
8. The device for regulating and controlling the environmental temperature of the precision instrument with high precision and preventing dust and moisture as claimed in claim 1, wherein the filter screen (9) is installed below the temperature-transmitting fan.
9. The apparatus according to claim 1, wherein the precise instrument is any one of a laser, a power amplifier circuit, a computer or other precise instruments requiring a stable temperature environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011555890.4A CN112731985B (en) | 2020-12-24 | 2020-12-24 | Dustproof and moistureproof device for regulating and controlling environment temperature of precision instrument with high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011555890.4A CN112731985B (en) | 2020-12-24 | 2020-12-24 | Dustproof and moistureproof device for regulating and controlling environment temperature of precision instrument with high precision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112731985A true CN112731985A (en) | 2021-04-30 |
| CN112731985B CN112731985B (en) | 2022-06-07 |
Family
ID=75615609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011555890.4A Active CN112731985B (en) | 2020-12-24 | 2020-12-24 | Dustproof and moistureproof device for regulating and controlling environment temperature of precision instrument with high precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112731985B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113448358A (en) * | 2021-07-13 | 2021-09-28 | 江苏七维测试技术有限公司 | Automatic temperature control device of BGA package chip |
| CN114442711A (en) * | 2022-02-10 | 2022-05-06 | 湖北震序车船科技股份有限公司 | Link rod constant-temperature constant-humidity mobile memory and control method |
| CN115562387A (en) * | 2022-10-07 | 2023-01-03 | 哈尔滨工业大学 | Multi-mode composite low-pressure ultra-precise temperature control device |
| CN115562387B (en) * | 2022-10-07 | 2024-05-31 | 哈尔滨工业大学 | Multimode composite low-voltage ultra-precise temperature control device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030033819A1 (en) * | 2001-08-10 | 2003-02-20 | Prescott Daniel C. | Current-Mode control of Thermo-Electric cooler |
| CN2713524Y (en) * | 2004-06-25 | 2005-07-27 | 北京邮电大学 | Temperature controller for Raman optical fiber amplifier |
| CN204808071U (en) * | 2015-06-26 | 2015-11-25 | 中国计量学院 | No surge semiconductor laser temperature control system based on H bridge circuit |
| CN205159790U (en) * | 2015-11-02 | 2016-04-13 | 安徽理工大学 | Colliery is semiconductor laser's temperature control system in optic fibre temperature measurement in pit |
| CN205430841U (en) * | 2016-03-15 | 2016-08-03 | 四川梦达科技有限责任公司 | Dustproof battery discharge appearance |
| CN205656518U (en) * | 2016-04-29 | 2016-10-19 | 广西师范大学 | Constant temperature control system |
| CN106877166A (en) * | 2015-12-14 | 2017-06-20 | 张凤军 | A kind of Temperature control circuit of semiconductor laser |
| CN107037840A (en) * | 2017-01-13 | 2017-08-11 | 广州腾德同普光电科技有限公司 | Device is found based on APC and the laser semiconductor material evidence of constant temperature intelligent control |
| CN207182129U (en) * | 2017-09-11 | 2018-04-03 | 郭春来 | Ship optical fiber gyroscope instrument temperature-controlled cabinet |
| CN208752473U (en) * | 2018-09-14 | 2019-04-16 | 台州市天启激光科技有限公司 | Laser bridge-type constant temperature control circuit |
-
2020
- 2020-12-24 CN CN202011555890.4A patent/CN112731985B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030033819A1 (en) * | 2001-08-10 | 2003-02-20 | Prescott Daniel C. | Current-Mode control of Thermo-Electric cooler |
| CN2713524Y (en) * | 2004-06-25 | 2005-07-27 | 北京邮电大学 | Temperature controller for Raman optical fiber amplifier |
| CN204808071U (en) * | 2015-06-26 | 2015-11-25 | 中国计量学院 | No surge semiconductor laser temperature control system based on H bridge circuit |
| CN205159790U (en) * | 2015-11-02 | 2016-04-13 | 安徽理工大学 | Colliery is semiconductor laser's temperature control system in optic fibre temperature measurement in pit |
| CN106877166A (en) * | 2015-12-14 | 2017-06-20 | 张凤军 | A kind of Temperature control circuit of semiconductor laser |
| CN205430841U (en) * | 2016-03-15 | 2016-08-03 | 四川梦达科技有限责任公司 | Dustproof battery discharge appearance |
| CN205656518U (en) * | 2016-04-29 | 2016-10-19 | 广西师范大学 | Constant temperature control system |
| CN107037840A (en) * | 2017-01-13 | 2017-08-11 | 广州腾德同普光电科技有限公司 | Device is found based on APC and the laser semiconductor material evidence of constant temperature intelligent control |
| CN207182129U (en) * | 2017-09-11 | 2018-04-03 | 郭春来 | Ship optical fiber gyroscope instrument temperature-controlled cabinet |
| CN208752473U (en) * | 2018-09-14 | 2019-04-16 | 台州市天启激光科技有限公司 | Laser bridge-type constant temperature control circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113448358A (en) * | 2021-07-13 | 2021-09-28 | 江苏七维测试技术有限公司 | Automatic temperature control device of BGA package chip |
| CN114442711A (en) * | 2022-02-10 | 2022-05-06 | 湖北震序车船科技股份有限公司 | Link rod constant-temperature constant-humidity mobile memory and control method |
| CN115562387A (en) * | 2022-10-07 | 2023-01-03 | 哈尔滨工业大学 | Multi-mode composite low-pressure ultra-precise temperature control device |
| CN115562387B (en) * | 2022-10-07 | 2024-05-31 | 哈尔滨工业大学 | Multimode composite low-voltage ultra-precise temperature control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112731985B (en) | 2022-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112731985B (en) | Dustproof and moistureproof device for regulating and controlling environment temperature of precision instrument with high precision | |
| CN101813951B (en) | Temperature controlled focal plane detector mechanism | |
| CN107579429B (en) | Semiconductor laser and temperature control method thereof | |
| CN101728752B (en) | Wavelength tunable fiber laser | |
| CN108873977B (en) | Chip atomic clock-based miniature low-power-consumption active digital temperature control device and method | |
| CN210804136U (en) | Temperature control box | |
| CN112996344A (en) | Edge computing equipment cooling system and edge cabinet comprising same | |
| CN104679059A (en) | Temperature control system of integrated circuit | |
| CN116706340A (en) | Energy storage system heat management method and system, electronic equipment and storage medium | |
| US4495782A (en) | Transmissive Dewar cooling chamber for optically pumped semiconductor ring lasers | |
| JP3750366B2 (en) | Solid optical element mount cell | |
| CN106785876A (en) | A kind of laser frequency regulator based on semiconductor chilling plate | |
| JP4014885B2 (en) | Excitation light source for Raman | |
| US9198329B2 (en) | Method and cabinet for controlling temperature in the cabinet | |
| CN111509551A (en) | Method for realizing stable output of laser and laser system | |
| CN111983765A (en) | Imaging device, temperature control device and temperature control method thereof | |
| CN210321776U (en) | Fiber grating light source system | |
| CN105633771A (en) | Temperature control structure used for optical microwave time-delay network | |
| JP2003224326A (en) | Semiconductor integrated circuit for controlling laser diode, light transmission module and method for setting light output | |
| CA3014830A1 (en) | Constant power supply for thermo-electric cells | |
| US3557565A (en) | Thermal device calibrating apparatus | |
| CN105188186A (en) | LED lamp tube heat dissipation control system with charge control | |
| CN201312310Y (en) | Erbium-doped fiber amplifier | |
| JP2004207434A (en) | Optical module and optical transmitter | |
| JPH0758416A (en) | Laser diode cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |