CN204806752U - Gas bearing stirling refrigerator control system - Google Patents
Gas bearing stirling refrigerator control system Download PDFInfo
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- CN204806752U CN204806752U CN201520463026.XU CN201520463026U CN204806752U CN 204806752 U CN204806752 U CN 204806752U CN 201520463026 U CN201520463026 U CN 201520463026U CN 204806752 U CN204806752 U CN 204806752U
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Abstract
The utility model relates to a gas bearing stirling refrigerator control system. This control system include microprocessor, be used for to gather refrigerator refrigeration temperature refrigeration temperature data collection circuit, be used for gathering the environment temperature data collection circuit of refrigerator operational environment temperature, the power control circuit who is used for gathering the voltage electric current acquisition circuit of refrigerator operating voltage and electric current and is used for adjusting refrigerator power. Can be known that this refrigerator control system can solve among the prior art refrigerator and start the problem of hitting jar and low temperature work and hitting the jar, not only can guarantee refrigerator reliability service under low temperature, satisfies high -efficient stable output capability and the control by temperature change required precision of stirling refrigerator by above technical scheme, the jar problem is hit in the start -up that can also solve under the various operating modes, and assurance stirling refrigerator can successfully be started shooting.
Description
Technical field
The utility model relates to gas bearing sterlin refrigerator technical field, is specifically related to a kind of gas bearing Control System for Stirling Cryocooler.
Background technology
The piston of the structures shape of gas bearing sterlin refrigerator refrigeration machine is in free state.When refrigeration machine is in stopped status, piston may be in the optional position in stroke.When refrigeration machine is vertically placed, the impact of gravitate, piston can fall to the end of stroke.Now start refrigeration machine, piston can be that equalization point moves back and forth with end of travel, will inevitably produce startup and hit cylinder problem.Traditional gas bearing stirling refrigeration machine controller adopts the method for small magnitude pulse location to start, and this starting method, when refrigeration machine horizontal positioned, can alleviate the problem starting and hit cylinder to a certain extent.But when refrigeration machine is vertically placed, still cannot solve the problem starting and hit cylinder, have a strong impact on the normal work of refrigeration machine, even made refrigeration machine start.Therefore, in order to ensure the reliability service of sterlin refrigerator, must design fan-out capability and accuracy of temperature control requirement that a kind of control system can meet sterlin refrigerator efficient stable, cylinder problem is hit in the startup that can solve again under various operating mode, ensures that sterlin refrigerator can successfully be started shooting.In addition, when refrigeration machine works under low-temperature condition, due to the increase in frame for movement gap, when traditional controller works, there will be the problem of hitting cylinder.Therefore, in order to ensure reliability service under refrigeration machine low temperature, must design under a kind of controller ensures refrigeration machine low-temperature condition, can reliability service.
Utility model content
The purpose of this utility model is to provide a kind of gas bearing Control System for Stirling Cryocooler, this chiller control system can solve refrigeration machine in prior art and start and hit the problem that cylinder and low-temperature working hit cylinder, refrigeration machine reliability service at low temperatures can not only be ensured, meet fan-out capability and the accuracy of temperature control requirement of sterlin refrigerator efficient stable, cylinder problem is hit in the startup that can also solve under various operating mode, ensures that sterlin refrigerator can successfully be started shooting.
For achieving the above object, the utility model have employed following technical scheme:
A kind of gas bearing Control System for Stirling Cryocooler, comprise microprocessor, for gather refrigeration machine cryogenic temperature cryogenic temperature Acquisition Circuit, for gather refrigeration machine operating ambient temperature temperature collection circuit, for gathering the voltage x current Acquisition Circuit of refrigeration machine operating voltage and electric current and the power control circuit for adjusting refrigeration machine power.
The output of described cryogenic temperature Acquisition Circuit, temperature collection circuit is connected with the input of microprocessor respectively; The output of described microprocessor is connected with the input of power control circuit; The output of described power control circuit is connected with the input of voltage x current Acquisition Circuit, the power input of refrigeration machine respectively.
Further, described microprocessor adopts the DSPIC30F6015 chip of Microsoft.
Further, described cryogenic temperature Acquisition Circuit comprises and is arranged on the first temperature sensor on refrigeration machine cold head and signal conditioning circuit.
Described signal conditioning circuit comprises the first operational amplifier U1, filter capacitor C1, the second operational amplifier U2 and the first A/D converter.Described first operational amplifier, its in-phase input end connects power supply through resistance R1, and its reverse input end is through resistance R2 ground connection, and its output connects the in-phase input end of the second operational amplifier U2 successively through resistance R5, R6, R7.Described first operational amplifier, its in-phase input end is also connected between resistance R5 and R6 through resistance R3, is provided with a RC filter circuit between its inverting input and output.Described second operational amplifier, the resistance R6 of its in-phase input end through being connected in parallel and electric capacity C3 ground connection, its inverting input is successively through resistance R8, R9 ground connection, and its output connects the input of microprocessor successively through resistance R12, the first A/D converter.Described second operational amplifier, is provided with the 2nd RC filter circuit between its inverting input and output; Described filter capacitor, its positive pole is connected between resistance R6 and R7, and its negative pole is connected between resistance R8 and R9.Described first temperature sensor is connected in parallel on filter capacitor two ends.A described RC filter circuit comprises the resistance R4 and electric capacity C2 that are connected in parallel.Described 2nd RC filter circuit comprises the resistance R11 and electric capacity C4 that are connected in parallel.
Further, described temperature collection circuit comprises the second temperature sensor being arranged on refrigeration machine surface.Described second temperature sensor is connected between power supply and microprocessor.
Further, described voltage x current Acquisition Circuit comprises current sensor, the second A/D converter and exports bleeder circuit.Described output bleeder circuit comprises resistance R13 and the R14 be connected in series, the input of this output bleeder circuit one termination refrigeration machine or the output of power control circuit, other end ground connection.Described current sensor is connected between power control circuit output and refrigeration machine input.Described second A/D converter, the output of its input termination current sensor, its input is also connected on the node between resistance R13 and R14, and it exports the input of termination microprocessor.
Further, described power control circuit comprises the first FET V1, the second FET V2, the 3rd FET V3, the 4th FET V4 and predrive chip.The grid of described first FET V1, the second FET V2, the 3rd FET V3, the 4th FET V4 is connected with the output of predrive chip respectively.The output of the input termination microprocessor of described predrive chip; Described first FET V1, its drain electrode connects power supply, and its source electrode connects the drain electrode of the second FET V2; The source ground of described second FET V2.Described 3rd FET V3, its drain electrode connects power supply, and its source electrode connects the drain electrode of the 4th FET V4.The source ground of described 4th FET V4.Node between the source electrode of described first FET V1 and the drain electrode of the second FET V2 is connected to the power input of refrigeration machine.Node between the source electrode of described second FET V3 and the drain electrode of the 4th FET V4 is connected to the input of voltage x current Acquisition Circuit.
Compared to the prior art, the beneficial effects of the utility model are:
The utility model is applicable to gas bearing sterlin refrigerator, gas bearing stirling generator and gas bearing linear compressor etc. based on the startup of gas bearing supporting technology product and control.This chiller control system can solve refrigeration machine in prior art and start and hit the problem that cylinder and low-temperature working hit cylinder, refrigeration machine reliability service at low temperatures can not only be ensured, meet fan-out capability and the accuracy of temperature control requirement of sterlin refrigerator efficient stable, cylinder problem is hit in the startup that can also solve under various operating mode, ensures that sterlin refrigerator can successfully be started shooting.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of gas bearing Control System for Stirling Cryocooler;
Fig. 2 is the circuit theory diagrams of cryogenic temperature Acquisition Circuit and temperature collection circuit;
Fig. 3 is the circuit theory diagrams of voltage x current Acquisition Circuit and power control circuit.
Wherein:
1, cryogenic temperature Acquisition Circuit, 2, temperature collection circuit, 3, voltage x current Acquisition Circuit, 4, power control circuit, 5, refrigeration machine, 6, microprocessor.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
A kind of gas bearing Control System for Stirling Cryocooler as shown in Figure 1, comprises microprocessor 6, cryogenic temperature Acquisition Circuit 1, temperature collection circuit 2, voltage x current electric 3 roads of collection and power control circuit 4.The output of described cryogenic temperature Acquisition Circuit 1, temperature collection circuit 2 is connected with the input of microprocessor 6 respectively; The output of described microprocessor 6 is connected with the input of power control circuit 4; The output of described power control circuit 4 is connected with the input of voltage x current Acquisition Circuit 3, the power input of refrigeration machine 5 respectively.Preferably, described microprocessor adopts the DSPIC30F6015 chip of Microsoft.
As shown in Figure 2, described cryogenic temperature Acquisition Circuit 1 comprises and is arranged on the first temperature sensor on refrigeration machine 5 cold head and signal conditioning circuit.Preferably, the model of described first temperature sensor is SMBT2222.Described signal conditioning circuit comprises the first operational amplifier U1, filter capacitor C1, the second operational amplifier U2 and the first A/D converter.Described first operational amplifier, its in-phase input end connects power supply through resistance R1, and its reverse input end is through resistance R2 ground connection, and its output connects the in-phase input end of the second operational amplifier U2 successively through resistance R5, R6, R7.Described first operational amplifier, its in-phase input end is also connected between resistance R5 and R6 through resistance R3, is provided with a RC filter circuit between its inverting input and output.Described second operational amplifier, the resistance R6 of its in-phase input end through being connected in parallel and electric capacity C3 ground connection, its inverting input is successively through resistance R8, R9 ground connection, and its output connects the input of microprocessor successively through resistance R12, the first A/D converter.Described second operational amplifier, is provided with the 2nd RC filter circuit between its inverting input and output; Described filter capacitor, its positive pole is connected between resistance R6 and R7, and its negative pole is connected between resistance R8 and R9.Described first temperature sensor is connected in parallel on filter capacitor two ends.A described RC filter circuit comprises the resistance R4 and electric capacity C2 that are connected in parallel.Described 2nd RC filter circuit comprises the resistance R11 and electric capacity C4 that are connected in parallel.
Described temperature collection circuit 2 comprises the second temperature sensor being arranged on refrigeration machine 5 surface.Described second temperature sensor is connected between power supply and microprocessor 6.Preferably, described second temperature sensor adopts temperature sensor chip AD5901.
As shown in Figure 3, described voltage x current Acquisition Circuit 3 comprises current sensor, the second A/D converter and exports bleeder circuit.Preferably, described current sensor adopts Hall current sensor LTS25-NP; Described second A/D converter adopts twin-channel A/D chip ADS7862.Described output bleeder circuit comprises resistance R13 and the R14 be connected in series, the input of this output bleeder circuit one termination refrigeration machine or the output of power control circuit, other end ground connection.Described current sensor is connected between power control circuit output and refrigeration machine input.Described second A/D converter, the output of its input termination current sensor, its input is also connected on the node between resistance R13 and R14, and it exports the input of termination microprocessor.
As shown in Figure 3, described power control circuit 4 comprises the first FET V1, the second FET V2, the 3rd FET V3, the 4th FET V4 and predrive chip.The model of four FETs is IRF1404.The model of predrive chip is HIP4081.The grid of described first FET V1, the second FET V2, the 3rd FET V3, the 4th FET V4 is connected with the output of predrive chip respectively.The output of the input termination microprocessor of described predrive chip; Described first FET V1, its drain electrode connects power supply, and its source electrode connects the drain electrode of the second FET V2; The source ground of described second FET V2.Described 3rd FET V3, its drain electrode connects power supply, and its source electrode connects the drain electrode of the 4th FET V4.The source ground of described 4th FET V4.Node between the source electrode of described first FET V1 and the drain electrode of the second FET V2 is connected to the power input of refrigeration machine.Node between the source electrode of described second FET V3 and the drain electrode of the 4th FET V4 is connected to the input of voltage x current Acquisition Circuit.
Above-described embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (6)
1. a gas bearing Control System for Stirling Cryocooler, is characterized in that: comprise microprocessor, for gather refrigeration machine cryogenic temperature cryogenic temperature Acquisition Circuit, for gather refrigeration machine operating ambient temperature temperature collection circuit, for gathering the voltage x current Acquisition Circuit of refrigeration machine operating voltage and electric current and the power control circuit for adjusting refrigeration machine power;
The output of described cryogenic temperature Acquisition Circuit, temperature collection circuit is connected with the input of microprocessor respectively; The output of described microprocessor is connected with the input of power control circuit; The output of described power control circuit is connected with the input of voltage x current Acquisition Circuit, the power input of refrigeration machine respectively.
2. a kind of gas bearing Control System for Stirling Cryocooler according to claim 1, is characterized in that: described microprocessor adopts the DSPIC30F6015 chip of Microsoft.
3. a kind of gas bearing Control System for Stirling Cryocooler according to claim 1, is characterized in that: described cryogenic temperature Acquisition Circuit comprises and is arranged on the first temperature sensor on refrigeration machine cold head and signal conditioning circuit;
Described signal conditioning circuit comprises the first operational amplifier U1, filter capacitor C1, the second operational amplifier U2 and the first A/D converter; Described first operational amplifier, its in-phase input end connects power supply through resistance R1, and its reverse input end is through resistance R2 ground connection, and its output connects the in-phase input end of the second operational amplifier U2 successively through resistance R5, R6, R7; Described first operational amplifier, its in-phase input end is also connected between resistance R5 and R6 through resistance R3, is provided with a RC filter circuit between its inverting input and output; Described second operational amplifier, the resistance R6 of its in-phase input end through being connected in parallel and electric capacity C3 ground connection, its inverting input is successively through resistance R8, R9 ground connection, and its output connects the input of microprocessor successively through resistance R12, the first A/D converter; Described second operational amplifier, is provided with the 2nd RC filter circuit between its inverting input and output; Described filter capacitor, its positive pole is connected between resistance R6 and R7, and its negative pole is connected between resistance R8 and R9; Described first temperature sensor is connected in parallel on filter capacitor two ends.
4. a kind of gas bearing Control System for Stirling Cryocooler according to claim 1, is characterized in that: described temperature collection circuit comprises the second temperature sensor being arranged on refrigeration machine surface; Described second temperature sensor is connected between power supply and microprocessor.
5. a kind of gas bearing Control System for Stirling Cryocooler according to claim 1, is characterized in that: described voltage x current Acquisition Circuit comprises current sensor, the second A/D converter and exports bleeder circuit; Described output bleeder circuit comprises resistance R13 and the R14 be connected in series, the input of this output bleeder circuit one termination refrigeration machine or the output of power control circuit, other end ground connection; Described current sensor is connected between power control circuit output and refrigeration machine input; Described second A/D converter, the output of its input termination current sensor, its input is also connected on the node between resistance R13 and R14, and it exports the input of termination microprocessor.
6. a kind of gas bearing Control System for Stirling Cryocooler according to claim 1, is characterized in that: described power control circuit comprises the first FET V1, the second FET V2, the 3rd FET V3, the 4th FET V4 and predrive chip; The grid of described first FET V1, the second FET V2, the 3rd FET V3, the 4th FET V4 is connected with the output of predrive chip respectively; The output of the input termination microprocessor of described predrive chip; Described first FET V1, its drain electrode connects power supply, and its source electrode connects the drain electrode of the second FET V2; The source ground of described second FET V2; Described 3rd FET V3, its drain electrode connects power supply, and its source electrode connects the drain electrode of the 4th FET V4; The source ground of described 4th FET V4; Node between the source electrode of described first FET V1 and the drain electrode of the second FET V2 is connected to the power input of refrigeration machine; Node between the source electrode of described second FET V3 and the drain electrode of the 4th FET V4 is connected to the input of voltage x current Acquisition Circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463026.XU CN204806752U (en) | 2015-07-01 | 2015-07-01 | Gas bearing stirling refrigerator control system |
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| CN201520463026.XU CN204806752U (en) | 2015-07-01 | 2015-07-01 | Gas bearing stirling refrigerator control system |
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| CN204806752U true CN204806752U (en) | 2015-11-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042966A (en) * | 2015-07-01 | 2015-11-11 | 中国电子科技集团公司第十六研究所 | Gas bearing Stirling crycooler control system and method |
| CN108317786A (en) * | 2017-12-27 | 2018-07-24 | 中国电子科技集团公司第十研究所 | A kind of control circuit of sterlin refrigerator |
| CN111795720A (en) * | 2020-05-25 | 2020-10-20 | 上海齐耀动力技术有限公司 | Stirling refrigerator test bench working condition gear control system and control method |
| CN115218602A (en) * | 2022-06-27 | 2022-10-21 | 青岛海尔生物医疗股份有限公司 | Method and device for controlling temperature of refrigerator, refrigerator and storage medium |
-
2015
- 2015-07-01 CN CN201520463026.XU patent/CN204806752U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042966A (en) * | 2015-07-01 | 2015-11-11 | 中国电子科技集团公司第十六研究所 | Gas bearing Stirling crycooler control system and method |
| CN105042966B (en) * | 2015-07-01 | 2017-10-10 | 中国电子科技集团公司第十六研究所 | A kind of gas bearing Control System for Stirling Cryocooler and its control method |
| CN108317786A (en) * | 2017-12-27 | 2018-07-24 | 中国电子科技集团公司第十研究所 | A kind of control circuit of sterlin refrigerator |
| CN108317786B (en) * | 2017-12-27 | 2020-10-23 | 中国电子科技集团公司第十一研究所 | Control circuit of Stirling refrigerator |
| CN111795720A (en) * | 2020-05-25 | 2020-10-20 | 上海齐耀动力技术有限公司 | Stirling refrigerator test bench working condition gear control system and control method |
| CN115218602A (en) * | 2022-06-27 | 2022-10-21 | 青岛海尔生物医疗股份有限公司 | Method and device for controlling temperature of refrigerator, refrigerator and storage medium |
| CN115218602B (en) * | 2022-06-27 | 2023-08-11 | 青岛海尔生物医疗股份有限公司 | Method and device for controlling temperature of refrigerator, refrigerator and storage medium |
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