Plate spring and coil combined structure for linear compressor

Abstract

The utility model discloses a plate spring and coil combined structure for a linear compressor, which comprises a plate spring assembly and a coil assembly, and is characterized in that the plate spring assembly comprises a plurality of plate spring pieces, the coil assembly comprises a plurality of coil frameworks and a plurality of coil units wound on each coil framework, a plurality of plate spring pieces are installed on the corresponding coil frameworks, and a coil unit is arranged between every two adjacent plate spring pieces. According to the utility model, the coil is divided into a plurality of coil units which are arranged between two adjacent plate spring pieces to form a coil and plate spring piece combined structure, so that the volume and the installation cost of the linear compressor are reduced. Meanwhile, the coil units are arranged between the two adjacent plate spring pieces, and the plate spring pieces are formed by punching silicon steel sheets, so that when current flows through the coil units, a magnetic field is generated to drive the plate spring pieces to deform to generate elastic force, and the piston is driven to move.

Description

Technical Field

[0001] The utility model relates to the technical field of linear compressors, in particular to a leaf spring and coil combination structure for a linear compressor. Background Art

[0002] Linear compressors provide dynamic pressure waves for Stirling refrigerators, pulse tube refrigerators, etc. in cryogenic engineering, providing power for the entire refrigeration cycle. Cryogenic refrigerators have important applications in aerospace, military, cryogenic electronics, cryogenic medicine, meteorology, gas liquefaction and many other fields. These applications put forward increasingly stringent requirements on the reliability, low vibration and long life of cryogenic refrigerators. Among them, the stability of compressor operation, long life during operation and the size of the compressor are the main bottlenecks in the development of refrigerators.

[0003] For the compressor system driven by the traditional crank-connecting rod mechanism, due to the friction between the piston and the cylinder, a lateral force perpendicular to the direction of piston movement is generated. The piston and cylinder working in this state for a long time are prone to severe wear, which deteriorates the performance of the refrigerator and produces greater vibration, limiting its application in space and infrared fields.

[0004] The linear compressor is driven by a linear motor, which directly converts the electromagnetic force into the driving force for the reciprocating motion of the piston, avoiding the loss caused by the conversion of the crank-connecting rod mechanism. Since the direction of piston movement is parallel to the cylinder, there is no lateral force between the piston and the cylinder. Therefore, the service life of the compressor can be increased, vibration is reduced, and noise is also greatly reduced compared to rotary compressors.

[0005] The linear compressor adopts the new leaf spring support technology and oil-free lubrication technology to provide reliable guarantee for the stable operation of the compressor. The flexible leaf spring provides radial support and axial free reciprocating motion for the piston. The larger radial stiffness prevents the piston from shaking up and down and causing radial displacement during movement, avoiding direct contact between the piston and the cylinder; the axial stiffness of the leaf spring is much smaller than its radial stiffness, which allows the piston to move freely in the cylinder.

[0006] Currently, the leaf spring and the coil in the linear compressor are arranged separately, which increases the volume of the entire linear compressor and the installation cost. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a leaf spring and coil combination structure for a linear compressor to reduce the volume and installation cost of the linear compressor in order to solve the problem of increased volume and increased installation cost caused by the separate arrangement of leaf springs and coils in the existing linear compressor.

[0008] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0009] A leaf spring and coil combination structure for a linear compressor includes a leaf spring assembly and a coil assembly, characterized in that the leaf spring assembly includes a plurality of leaf spring leaves, and the coil assembly includes a plurality of coil skeletons and a plurality of coil units wound on each coil skeleton, wherein the plurality of leaf spring leaves are mounted on corresponding coil skeletons, and a coil unit is arranged between two adjacent leaf spring leaves.

[0010] In a preferred embodiment of the present invention, the number of coil turns of each coil unit is 80-150 turns.

[0011] In a preferred embodiment of the present invention, the outer diameter of each coil unit is less than or equal to the outer diameter of the leaf spring.

[0012] In a preferred embodiment of the present invention, an insulating layer is coated on both side surfaces in the axial direction of each leaf spring.

[0013] In a preferred embodiment of the present invention, the leaf spring is punched from silicon steel sheets.

[0014] Due to the adoption of the above technical solution, the utility model divides the coil into several coil units and arranges them between two adjacent leaf springs to form a coil and leaf spring combination structure, thereby reducing the volume and installation cost of the linear compressor. At the same time, since the coil unit is arranged between two adjacent leaf springs, and the leaf spring is punched from silicon steel sheets, when current flows through the coil unit, a magnetic field is generated to drive the leaf spring to deform and generate elastic force, thereby driving the piston to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the combined structure of a leaf spring and a coil for a linear compressor of the utility model.

[0016] Figure 2 for Figure 1 AA section view. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0018] See also Figure 1 and Figure 2 , a leaf spring and coil combination structure for a linear compressor shown in the figure includes a leaf spring assembly and a coil assembly.

[0019] The leaf spring assembly includes a plurality of leaf springs 10. The coil assembly includes a plurality of coil frames 20 and a plurality of coil units 30 wound on the coil frames 20, wherein the plurality of leaf springs 10 are mounted on corresponding coil frames 30, and a coil unit 30 is arranged between two adjacent leaf springs 10. The number of coil turns of each coil unit is 80-150 turns.

[0020] The outer diameter of each coil unit 30 is smaller than or equal to the outer diameter of the leaf spring piece 10. An insulating layer is coated on both side surfaces in the axial direction of each leaf spring piece 10 to be insulated from the coil unit 30.

[0021] The leaf spring 10 is punched out of silicon steel sheets, so that when current flows through the coil unit 30 , a magnetic field is generated to drive the leaf spring 10 to deform and generate elastic force, which drives the piston to move through the coil frame 20 .

Claims

1. A leaf spring and coil combination structure for a linear compressor, comprising a leaf spring assembly and a coil assembly, characterized in that: The leaf spring assembly includes a plurality of leaf springs, and the coil assembly includes a plurality of coil frames and a plurality of coil units wound on each coil frame, wherein the plurality of leaf springs are mounted on corresponding coil frames, and a coil unit is arranged between two adjacent leaf springs.

2. A leaf spring and coil combination structure for a linear compressor according to claim 1, characterized in that: The number of coil turns of each coil unit is 80-150 turns.

3. A leaf spring and coil combination structure for a linear compressor according to claim 1 or 2, characterized in that: The outer diameter of each coil unit is smaller than or equal to the outer diameter of the leaf spring.

4. A leaf spring and coil combination structure for a linear compressor according to claim 3, characterized in that: An insulating layer is coated on both side surfaces in the axial direction of each leaf spring.

5. A leaf spring and coil combination structure for a linear compressor according to claim 4, characterized in that: The leaf spring is punched from silicon steel sheets.

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