CN112664427B - Linear compressor with variable resonant frequency - Google Patents
Linear compressor with variable resonant frequency Download PDFInfo
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- CN112664427B CN112664427B CN202110107434.1A CN202110107434A CN112664427B CN 112664427 B CN112664427 B CN 112664427B CN 202110107434 A CN202110107434 A CN 202110107434A CN 112664427 B CN112664427 B CN 112664427B
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- plate spring
- frame
- linear compressor
- mounting frame
- end flange
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 claims description 7
- 238000010618 wire wrap Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The invention relates to a linear compressor with variable resonant frequency, which comprises a discharge muffler, a connecting frame, a front end flange plate, a fixing frame, a magnet mounting frame, a rear end flange plate, a resonance adjusting device, a base, an air cylinder, a piston, a permanent magnet and a coil, wherein the discharge muffler, the connecting frame, the front end flange plate, the rear end flange plate and the resonance adjusting device are fixed through bolts to form a compressor rack, the compressor rack is arranged on the base through the fixing frame, alternating current is applied to the coil of the linear compressor to generate alternating magnetic field force, and the piston is driven to do reciprocating linear motion in the air cylinder under the action of the alternating magnetic field force. The invention uses the resonance adjusting device to change the axial stroke and the rigidity of the plate spring, thereby changing the resonance frequency of the linear compressor, and the linear compressor can still keep a resonance state in the frequency conversion process, thereby realizing the purpose of energy conservation.
Description
Technical Field
The invention belongs to the technical field of linear compressors, and relates to a moving-coil linear compressor, in particular to a linear compressor with variable resonant frequency.
Background
The compressor is widely applied to white household appliances such as air conditioners, refrigerators, freezers and the like as the heart of refrigeration equipment, and with the continuous development of scientific technology, the linear compressor gradually replaces the market of the traditional crank connecting rod reciprocating compressor with smaller volume and lower energy consumption. The linear compressor generates alternating magnetic field force by applying alternating current on the coil, the piston is driven to do reciprocating linear motion in the cylinder under the action of the alternating magnetic field force, when input excitation is equal to the natural frequency of the linear compressor, the system generates resonance, at the moment, the energy consumption of the system is reduced, as the rigidity of the resonance spring can not be dynamically adjusted after the existing linear compressor is installed, the resonance frequency of the system is constant, and the optimal energy-saving effect can not be achieved when the linear compressor works in a frequency conversion mode, therefore, the linear compressor with variable resonance frequency needs to be designed.
Disclosure of Invention
The invention discloses a linear compressor with variable resonant frequency, aiming at the problem that the resonant frequency of the existing linear compressor is not adjustable. The technical scheme is as follows: the linear compressor with variable resonant frequency comprises an exhaust silencer, a connecting frame, a front end flange plate, a fixing frame, a magnet mounting frame, a rear end flange plate, a resonance adjusting device, a base, a cylinder, a piston, a suction silencer, a wire wrap frame, an inner stator, a permanent magnet, a coil, a plate spring, a piston rod and a fastening bolt. The front end of the connecting frame is provided with an exhaust silencer, the interior of the connecting frame is provided with a cylinder, and the rear end of the connecting frame is connected with a front end flange disc; the suction muffler is arranged at the rear end in the cylinder, the front end of the magnet mounting frame is connected with the front end flange plate, the permanent magnet is arranged in the magnet mounting frame, and the rear end of the magnet mounting frame is connected with the rear end flange plate; a spring is arranged in the resonance adjusting device, and the resonance adjusting device is fixed with the rear end flange plate through a fastening bolt; the coil is wound on the outer side of the coil frame, and the coil frame is arranged inside the magnet mounting frame; the inner stator is arranged inside the wire wrapping frame, and the front end of the inner stator is fixed on the front end flange plate; the piston rod is arranged at the center of the linear compressor, the front end of the piston rod is provided with a piston, the middle of the piston rod is fixedly connected with a coil frame, the tail of the piston rod is connected with a plate spring, the front and the back of the plate spring are respectively provided with 1 resonance adjusting device, and the fixing frame fixes the magnet mounting frame on the base.
The resonance adjusting device comprises a plate spring mounting rack, a small motor, a limiting slide block, a lead screw, an optical axis and a nut; the lead screw is connected with the plate spring mounting rack through threads, and one end of the lead screw is provided with a small motor and fixed on the outer end face of the plate spring mounting rack; the optical axis radially penetrates through the plate spring mounting frame and is fixed on the plate spring mounting frame; 1 threaded hole and 1 through hole are respectively drilled on two sides of the limiting sliding block, the limiting sliding block is arranged on the screw rod and the optical axis, and a nut is arranged inside one side of the limiting sliding block with the threaded hole; the small motor can drive the limiting slide block to move on the lead screw and the optical axis; the plate spring is arranged in a clamping groove of the plate spring connecting frame.
The plate spring inside have 3 sharp arms, 3 sharp arms are 120 degrees around the plate spring axle center and distribute, the cross sectional area of the one side of being close to the axle center of sharp arm is little, keep away from axle center one side cross sectional area big, bore 1 through-hole in the middle of the plate spring and be used for installing the piston rod, 12 through-holes are bored to the plate spring outer end and are used for installing fastening bolt.
The invention has the advantages that:
1. the resonance adjusting device is adopted by the linear compressor with variable resonance frequency to change the axial stroke and rigidity of the plate spring, so that the resonance frequency of the linear compressor is changed, the linear compressor can still keep a resonance state in the frequency conversion process, and the energy consumption of the compressor is saved;
2. the plate spring in the linear compressor with variable resonant frequency adopts an equal-strength linear arm shape, so that the stress concentration in the plate spring is eliminated, and the service life of the plate spring is prolonged;
3. the linear compressor with variable resonant frequency has compact structure and small volume, and can save the installation space of refrigeration equipment.
Drawings
FIG. 1 is a perspective view showing an overall structure of a variable resonance frequency linear compressor according to the present invention
FIG. 2 is a schematic sectional view showing an overall structure of a variable resonant frequency linear compressor according to the present invention
FIG. 3 is a schematic structural diagram of a resonance adjusting apparatus in a linear compressor with variable resonance frequency according to the present invention
FIG. 4 is a schematic diagram of a plate spring structure in a linear compressor with variable resonant frequency according to the present invention
FIG. 5 is a schematic diagram illustrating the adjustment status of the resonance adjusting device in the linear compressor with variable resonance frequency according to the present invention
In the figure: 1. an exhaust muffler; 2. a connecting frame; 3. a front end flange plate; 4. a fixed mount; 5. a magnet mounting bracket; 6. a rear end flange plate; 7. a resonance adjusting device; 8. a base; 9. a cylinder; 10. a piston; 11. a suction muffler; 12. a wire bag frame; 13. an inner stator; 14. a permanent magnet; 15. a coil; 16. a plate spring; 17. a piston rod; 18. fastening a bolt; 71. a leaf spring mounting bracket; 72. a small motor; 73. a limiting slide block; 74. a lead screw; 75. an optical axis; 76. and a nut.
Detailed Description
The present invention will be further described with reference to the following embodiments, and the technical solutions in the embodiments of the present invention will be clearly and completely described. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention relates to a linear compressor with variable resonant frequency, which comprises a discharge muffler 1, a connecting frame 2, a front end flange plate 3, a fixing frame 4, a magnet mounting frame 5, a rear end flange plate 6, a resonance adjusting device 7, a base 8, a cylinder 9, a piston 10, a suction muffler 11, a coil frame 12, an inner stator 13, a permanent magnet 14, a coil 15, a plate spring 16, a piston rod 17, and a fastening bolt 18. The front end of the connecting frame 2 is provided with the discharge muffler 1, the interior of the connecting frame is provided with the cylinder 9, and the rear end of the connecting frame is connected with the front end flange plate 3; a suction muffler 11 is arranged at the rear end in the cylinder 9, the front end of the magnet mounting frame 5 is connected with the front end flange plate 3, a permanent magnet 14 is arranged in the magnet mounting frame, and the rear end of the magnet mounting frame is connected with the rear end flange plate 6; a spring 16 is arranged in the resonance adjusting device 7, and the resonance adjusting device 7 and the rear-end flange plate 6 are fixed through a fastening bolt 18; the coil 15 is wound on the outer side of the coil frame 12, and the coil frame 12 is arranged inside the magnet mounting frame 5; the inner stator 13 is arranged inside the wire wrapping frame 12, and the front end of the inner stator is fixed on the front end flange 3; the piston rod 17 is located at the center of the linear compressor, the front end of the piston rod is provided with the piston 10, the middle of the piston rod is fixedly connected with the wire package frame 12, the tail of the piston rod is connected with the plate spring 16, the plate spring 16 is respectively provided with 1 resonance adjusting device in the front and at the back, and the magnet mounting frame 5 is fixed on the base 8 by the fixing frame 4.
Referring to fig. 3, the resonance adjusting device 7 includes a plate spring mounting bracket 71, a small motor 72, a limiting slider 73, a lead screw 74, an optical axis 75, and a nut 76; the lead screw 74 is in threaded connection with the plate spring mounting frame 71, and one end of the lead screw 74 is provided with the small motor 72 and fixed on the outer end face of the plate spring mounting frame 71; the optical axis 75 radially penetrates through the plate spring mounting frame 71 and is fixed on the plate spring mounting frame 71; 1 threaded hole and 1 through hole are respectively drilled on two sides of the limiting sliding block 73, the limiting sliding block 73 is arranged on the lead screw 74 and the optical axis 75, and a nut 76 is arranged inside one side, provided with the threaded hole, of the limiting sliding block 73; the small motor 72 can drive the limiting slide block 73 to move on the lead screw 74 and the optical axis 75; the plate spring 16 is arranged in a clamping groove of the plate spring connecting frame 71.
Referring to fig. 4, 3 linear arms are arranged in the plate spring 16, the 3 linear arms are distributed around the axis of the plate spring 16 at 120 degrees, the cross sectional area of one side, close to the axis, of each linear arm is small, the cross sectional area of one side, far away from the axis, of each linear arm is large, 1 through hole is drilled in the middle of the plate spring 16 and used for mounting a piston rod 17, 12 through holes are drilled in the outer end of the plate spring 16 and used for mounting a fastening bolt 18, and the length of each linear arm in the plate spring 16 is L.
Referring to fig. 5, the small motor 72 drives the limit slider 73 to move from the inner end surface of the plate spring mounting bracket 71 to the middle of the plate spring 16, the upper half part of the linear arm in the plate spring 16 is limited, the stiffness of the plate spring 16 is increased, and the resonant frequency of the linear compressor is increased
And k is the stiffness of the plate spring 16, m is the mass of the mover, and the mover comprises the piston 10, the piston rod 17, the bobbin 12, the coil 15 and the plate spring 16, so that the resonant frequency of the linear compressor is increased.
The working principle of the invention is as follows: the linear compressor generates alternating magnetic field force by applying alternating current on the coil 15, the drive coil 15 and the wire wrap frame 12 drive the piston rod 17 and the piston 10 under the action of the alternating magnetic field force, the piston rod and the piston are subjected to reciprocating linear motion in the cylinder 9 under the action of elastic restoring force of the plate spring 16, and when the current input frequency is consistent with the inherent frequency of the linear compressor, the generated resonance energy consumption is minimum; when the linear compressor works at a low frequency, the small motor 72 in the resonance adjusting device 7 drives the limiting slide block 73 to move in the direction away from the axis, so that the rigidity of the plate spring 16 is reduced, the linear compressor reaches a resonance state, and the energy consumption is saved; when the linear compressor works at high frequency, the small motor 72 in the resonance adjusting device 7 drives the limiting slide block 73 to move towards the direction close to the axis, the rigidity of the plate spring 16 is increased, the linear compressor reaches a resonance state, and energy consumption is saved.
Claims (3)
1. A linear compressor with variable resonant frequency is characterized by comprising an exhaust muffler (1), a connecting frame (2), a front end flange (3), a fixing frame (4), a magnet mounting frame (5), a rear end flange (6), a resonance adjusting device (7), a base (8), a cylinder (9), a piston (10), a suction muffler (11), a coil frame (12), an inner stator (13), a permanent magnet (14), a coil (15), a plate spring (16), a piston rod (17) and a fastening bolt (18); the front end of the connecting frame (2) is provided with the discharge muffler (1), the interior of the connecting frame is provided with the cylinder (9), and the rear end of the connecting frame is connected with the front end flange plate (3); a suction muffler (11) is arranged at the rear end in the cylinder (9), the front end of the magnet mounting frame (5) is connected with the front end flange plate (3), a permanent magnet (14) is arranged in the magnet mounting frame, and the rear end of the magnet mounting frame is connected with the rear end flange plate (6); a spring (16) is arranged in the resonance adjusting device (7), and the resonance adjusting device (7) is fixed with the rear end flange plate (6) through a fastening bolt (18); a coil (15) is wound on the outer side of the coil frame (12), and the coil frame (12) is arranged inside the magnet mounting frame (5); the inner stator (13) is arranged inside the wire wrapping frame (12), and the front end of the inner stator is fixed on the front end flange plate (3); the piston rod (17) is positioned at the center of the linear compressor, the front end of the piston rod is provided with the piston (10), the middle part of the piston rod is fixedly connected with the wire package frame (12), the tail part of the piston rod is connected with the plate spring (16), and the magnet mounting frame (5) is fixed on the base (8) by the fixing frame (4);
the resonance adjusting device (7) comprises a plate spring mounting frame (71), a small motor (72), a limiting slide block (73), a lead screw (74), an optical axis (75) and a nut (76); the lead screw (74) is connected with the plate spring mounting rack (71) through threads, one end of the lead screw (74) is provided with the small motor (72), and the small motor (72) is fixed on the outer end face of the plate spring mounting rack (71); the optical axis (75) radially penetrates through the plate spring mounting frame (71) and is fixed on the plate spring mounting frame (71); 1 threaded hole and 1 through hole are respectively drilled in two sides of the limiting sliding block (73), the limiting sliding block (73) is installed on the lead screw (74) and the optical axis (75), and a nut (76) is installed inside one side, provided with the threaded hole, of the limiting sliding block (73); the small motor (72) can drive the limiting slide block (73) to move on the lead screw (74) and the optical axis (75); the plate spring (16) is arranged in a clamping groove of the plate spring mounting frame (71).
2. The linear compressor with the variable resonant frequency according to claim 1, characterized in that 3 linear arms are arranged in the plate spring (16), the 3 linear arms are distributed around the axle center of the plate spring (16) at 120 degrees, the cross sectional area of the side of the linear arm close to the axle center is small, the cross sectional area of the side far away from the axle center is large, 1 through hole is drilled in the middle of the plate spring (16) for installing the piston rod (17), 12 through holes are drilled at the outer end of the plate spring (16) for installing the fastening bolt (18), the length of the linear arm in the plate spring (16) is L, the plate spring (16) adopts an equal-strength linear arm shape, the stress concentration in the plate spring (16) is eliminated, and the service life of the plate spring (16) is prolonged.
3. The linear compressor with variable resonant frequency according to claim 1, characterized in that the resonance adjusting device (7) can maintain the resonance state and reduce the compressor energy consumption during the frequency conversion of the linear compressor by changing the axial stroke and stiffness of the plate spring (16) so as to change the resonant frequency of the linear compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110107434.1A CN112664427B (en) | 2021-01-27 | 2021-01-27 | Linear compressor with variable resonant frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110107434.1A CN112664427B (en) | 2021-01-27 | 2021-01-27 | Linear compressor with variable resonant frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112664427A CN112664427A (en) | 2021-04-16 |
| CN112664427B true CN112664427B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110107434.1A Expired - Fee Related CN112664427B (en) | 2021-01-27 | 2021-01-27 | Linear compressor with variable resonant frequency |
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| Country | Link |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0301492A (en) * | 2003-04-23 | 2004-12-07 | Brasil Compressores Sa | Linear compressor resonance frequency adjustment system |
| KR100941422B1 (en) * | 2003-08-04 | 2010-02-10 | 삼성전자주식회사 | Linear compressor and control apparatus thereof |
| CN110005590B (en) * | 2019-05-09 | 2023-10-20 | 辽宁工程技术大学 | Moving coil type linear compressor |
| CN210949022U (en) * | 2019-09-29 | 2020-07-07 | 青岛海尔智能技术研发有限公司 | Linear compressor |
| CN111336088B (en) * | 2020-02-13 | 2021-11-02 | 杭州电子科技大学 | Linear type arm plate spring linear compressor |
| CN111852817A (en) * | 2020-07-31 | 2020-10-30 | 青岛万宝压缩机有限公司 | Linear compressor with resonance system |
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2021
- 2021-01-27 CN CN202110107434.1A patent/CN112664427B/en not_active Expired - Fee Related
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| CN112664427A (en) | 2021-04-16 |
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Granted publication date: 20220628 |