CN202304058U - Refrigerating machine driven by linear compressor - Google Patents
Refrigerating machine driven by linear compressor Download PDFInfo
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- CN202304058U CN202304058U CN 201120254367 CN201120254367U CN202304058U CN 202304058 U CN202304058 U CN 202304058U CN 201120254367 CN201120254367 CN 201120254367 CN 201120254367 U CN201120254367 U CN 201120254367U CN 202304058 U CN202304058 U CN 202304058U
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Abstract
The utility model discloses a refrigerating machine driven by a linear compressor, which mainly comprises a linear driving compressor, an expander and an inverse power supply, wherein the linear driving compressor is formed by two same single-piston linear resonance compressors which are symmetrically arranged at an angle of 180 degrees; a linear motor is in a single voice coil/moving coil type structure; a magnetic circuit is a closed magnetic circuit which mainly comprises an magnetic pole, a magnetic steel, a magnetic gap and an internal magnetic pole; the magnetic steel is magnetized by way of radial magnetizing, the internal and external magnetic poles are both made of an Fe-Co-V material with high magnetic conductivity, a motor rotor is connected with a rear cover of the compressor by a cylindrical spring so as to form a forced damped oscillation system, the surface of a compression piston is made of a wear-resisting material, and the clearance labyrinth seal is adopted between the compression piston and a compression cylinder; and the expander is of a pneumatic spring type, and composed of a cold cavity, a room temperature cavity and a pneumatic cavity, a discharger carries out reciprocating motion between the room temperature cavity and the cold cavity, a connecting rod of the discharger carries out reciprocating motion in the pneumatic cavity, a support component of the connecting rod of the discharger is the cylindrical spring, and clearance labyrinth seal is adopted between the discharger and the cylinder.
Description
Technical field
The present invention relates to refrigerating field, be specifically related to the compressor cooling machine technology.
Background technology
The development that supporting with it mini refrigerating machine is effectively being drawn in the continuous application militarily of infrared electro technology.In the mini refrigerating machine field, sterlin refrigerator research is the branch that history is the longest, research level is the most ripe.States such as the developed country such as the U.S., Britain, Israel, Holland have realized the seriation and the military commercialization of sterlin refrigerator as far back as the eighties in the world.We are digesting and assimilating on the basis of external advanced type, and the 0.8W80K linear motor driving double-piston of succeeding in developing production domesticization is to moving separated type sterlin refrigerator.In theory, since two mover symmetric arrangement of compressor, momentum balance, and vibration reduces greatly; Linear motor driving has been abandoned toggle, has simplified running part, has eliminated the side force of piston motion, has reduced the wearing and tearing between piston and cylinder, has reduced the influence of noise to Infrared Detectors, has improved the reliability of refrigeration machine.These facility have little, in light weight, the characteristics such as vibration is little, efficient is high, reliability height of volume, and its normal temperature environment also is with 0.5W heat load temperature control closed loop stream time to reach 2064 hours, and refrigeration machine is still in proper working order, operates steadily.Sterlin refrigerator mainly is made up of linear drives compressor, decompressor, DC-AC inverter three parts.
The utility model mainly proposes the refrigeration machine that a kind of linear compressor drives.
Summary of the invention
The utility model mainly proposes the refrigeration machine that a kind of linear compressor drives, and has solved elastic fatigue, piston wear, systemic contamination and the leakage problem of conventional chiller, has improved the reliability and the practicability level of refrigeration machine.Mainly comprise linear drives compressor, decompressor and inverter composition.Its operation logic block diagram is shown in accompanying drawing.Principal character is that the linear drives compressor is made up of two identical 180 ° of symmetric arrangement of single piston linear resonance compressor.Linear electric motors are selected single-tone circle, moving-coil structure.Magnetic circuit mainly constitutes a closed magnetic circuit by outer magnetic pole, magnet steel, magnetic gap, internal magnetic pole.Magnet steel adopts the radial magnetizing mode, and the advantage of this mode that magnetizes is that leakage field is little, and the magnetic circuit utilization rate is high, and interior outer magnetic pole all adopts the high iron cobalt vanadium material of magnetic conductivity, has further reduced leakage field.Internal magnetic pole is made compression cylinder again simultaneously, and outer magnetic pole is made compressor case again, and piston, the integrated assembling of electric mover make full use of the space, compact conformation, and volume reduces, weight saving.Electric mover is connected with the press bonnet through cylindrical spring, forms one and receives to compel vibration-damping system.The compression piston surface is a high-abrasive material, and adopts the gap labyrinth seal between the compression cylinder.When having alternating current to pass through in the moving-coil, moving-coil receives the work of Lorentz force as straight reciprocating motion in magnetic field, drives piston and accomplishes the gas compression.Compressor integral body is the hermetically sealed Welding Structure of metal, input power≤40W (DC), and overall dimensions are diameter 40mm～150mm.
Decompressor is the pneumatic spring type, is made up of cold chamber, room temperature chamber and pneumatic cavity three parts.Displacer moves back and forth between sky temperature chamber and cold chamber, and the displacer connecting rod moves back and forth in pneumatic cavity, and its support component is a cylindrical spring, and displacer and cylinder adopt the gap labyrinth seal.Displacer and support spring are formed one and are received to compel vibration-damping system, and displacer is the motion that uniting of gas alternating pressure ripple and spring force makes displacer under the driving than compression piston leading 5 jiaos.The decompressor Cold finger Size is diameter 7.8mm * 61.5mm.
Inverter, direct current signal converts the required sine wave signal of compressor linear electric motors into after inverter input conversion and power amplification, realize simultaneously the desired temperature control of refrigeration machine cold head.Control circuit provides the 1mA constant current to the PN junction diode temperature meter on the refrigeration machine cold head; The thermometric diode with the temperature sampling of refrigeration machine cold head in the control source; The signal of sampling is passed to PIC16C715 after amplifying; Carry out the AD conversion and calculate judgement and temperature control point difference, decision output valve through the program among the PIC.Output valve is carried out the DA conversion through TLC5615; Regulate the output PWM ripple dutycycle of MC33033; The driving power pipe, reaching the input power of adjustment refrigeration machine, the refrigerating capacity that cold machine is fallen in control with guarantee with refrigeration machine cold head temperature accurately be controlled at desired temperature controlling point (precision≤± 0.5K)
Description of drawings
Accompanying drawing: the refrigeration machine principle schematic that a kind of linear compressor drives
The specific embodiment
The refrigeration machine that a kind of linear compressor drives, its linear drives compressor is made up of two identical 180 ° of symmetric arrangement of single piston linear resonance compressor.When having alternating current to pass through in the moving-coil, moving-coil receives the work of Lorentz force as straight reciprocating motion in magnetic field, drives piston and accomplishes the gas compression.Compressor integral body is the hermetically sealed Welding Structure of metal, input power≤40W (DC), and overall dimensions are diameter 40mm～150mm.
Decompressor is the pneumatic spring type, is made up of cold chamber, room temperature chamber and pneumatic cavity three parts.Displacer and support spring are formed one and are received to compel vibration-damping system, and displacer is the motion that uniting of gas alternating pressure ripple and spring force makes displacer under the driving than compression piston leading 5 jiaos.The decompressor Cold finger Size is diameter 7.8mm * 61.5mm.Inverter power source control circuit provides the 1mA constant current to the PN junction diode temperature meter on the refrigeration machine cold head; The thermometric diode with the temperature sampling of refrigeration machine cold head in the control source; The signal of sampling is passed to PIC16C715 after amplifying; Carry out the AD conversion and calculate judgement and temperature control point difference, decision output valve through the program among the PIC.Output valve is carried out the DA conversion through TLC5615; Regulate the output PWM ripple dutycycle of MC33033; The driving power pipe, reaching the input power of adjustment refrigeration machine, the refrigerating capacity that cold machine is fallen in control with guarantee with refrigeration machine cold head temperature accurately be controlled at desired temperature controlling point (precision≤± 0.5K)
This refrigeration machine is that the forward-looking infrared system of operational aircraft, tank is supporting; It has adopted up-to-date in the world linear resonance opposed compressor, little quality pneumatic expansion machine, gap labyrinth seal and digitlization drive controlling; Reduced the volume and weight of refrigeration machine; Reduce the noise of refrigeration machine, improved refrigerating efficiency and reliability.Its unique high reliability structural design, assembling, system handles technology and high-pressure helium Seal Design technology; Solve elastic fatigue, piston wear, systemic contamination and the leakage problem of refrigeration machine effectively, improved the reliability and the practicability level of refrigeration machine.
Claims (3)
1. the refrigeration machine that linear compressor drives mainly comprises linear drives compressor, decompressor and inverter composition, and it is characterized in that: the linear drives compressor is made up of two identical 180 ° of symmetric arrangement of single piston linear resonance compressor; Linear electric motors are selected single-tone circle, moving-coil structure; Magnetic circuit mainly constitutes a closed magnetic circuit by outer magnetic pole, magnet steel, magnetic gap, internal magnetic pole.
2. the refrigeration machine that a kind of linear compressor according to claim 1 drives; It is characterized in that: magnet steel adopts the radial magnetizing mode; Interior outer magnetic pole all adopts the high iron cobalt vanadium material of magnetic conductivity, and electric mover is connected with the press bonnet through cylindrical spring, forms one and receives to compel vibration-damping system; The compression piston surface is a high-abrasive material, and adopts the gap labyrinth seal between the compression cylinder.
3. the refrigeration machine that a kind of linear compressor according to claim 1 drives; It is characterized in that: decompressor is the pneumatic spring type; Be made up of cold chamber, room temperature chamber and pneumatic cavity three parts, displacer moves back and forth between sky temperature chamber and cold chamber, and the displacer connecting rod moves back and forth in pneumatic cavity; Its support component is a cylindrical spring, and displacer and cylinder adopt the gap labyrinth seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120254367 CN202304058U (en) | 2011-07-19 | 2011-07-19 | Refrigerating machine driven by linear compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120254367 CN202304058U (en) | 2011-07-19 | 2011-07-19 | Refrigerating machine driven by linear compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304058U true CN202304058U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201120254367 Expired - Fee Related CN202304058U (en) | 2011-07-19 | 2011-07-19 | Refrigerating machine driven by linear compressor |
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| CN (1) | CN202304058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064449A (en) * | 2012-12-25 | 2013-04-24 | 中国电子科技集团公司第十一研究所 | Refrigerating machine control circuit based on microcontroller |
| CN104847761A (en) * | 2015-03-17 | 2015-08-19 | 中国电子科技集团公司第十六研究所 | Vacuum sticking method for Stirling cryocooler piston and wear-resistant materials |
-
2011
- 2011-07-19 CN CN 201120254367 patent/CN202304058U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064449A (en) * | 2012-12-25 | 2013-04-24 | 中国电子科技集团公司第十一研究所 | Refrigerating machine control circuit based on microcontroller |
| CN103064449B (en) * | 2012-12-25 | 2016-04-27 | 中国电子科技集团公司第十一研究所 | A kind of refrigeration machine control circuit based on microcontroller |
| CN104847761A (en) * | 2015-03-17 | 2015-08-19 | 中国电子科技集团公司第十六研究所 | Vacuum sticking method for Stirling cryocooler piston and wear-resistant materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20130719 |