CN203130409U - Linear compressor jointly supported by three springs - Google Patents
Linear compressor jointly supported by three springs Download PDFInfo
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- CN203130409U CN203130409U CN 201320103969 CN201320103969U CN203130409U CN 203130409 U CN203130409 U CN 203130409U CN 201320103969 CN201320103969 CN 201320103969 CN 201320103969 U CN201320103969 U CN 201320103969U CN 203130409 U CN203130409 U CN 203130409U
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Abstract
本实用新型公开了一种采用三种弹簧共同支撑的线性压缩机，包括支架、与支架相互固定的气缸、与气缸内壁间隙配合的两个活塞、以及驱动两个活塞同轴往复运动的两个直线电机，两个直线电机分别通过活塞轴与对应活塞传动；每个活塞轴两个端部分别通过涡旋臂板弹簧组件和直线臂板弹簧组件与所述支架固定，且涡旋臂板弹簧组件靠近活塞设置；每个活塞轴远离活塞的端部与支架之间分别设有用于提供轴向弹力的圆柱螺旋弹簧。本实用新型的线性压缩机采用三种弹簧共同支撑，在保证间隙密封和无油润滑技术的同时，有效的提高弹簧的轴向刚度，对于动子质量较大的线性压缩机，可以实现高频共振运行，提高运行效率，实现线性压缩机和低温制冷机冷头的特性匹配。
The utility model discloses a linear compressor supported by three kinds of springs, which comprises a bracket, a cylinder fixed to the bracket, two pistons matched with the inner wall of the cylinder, and two pistons driving the two pistons to reciprocate coaxially. Linear motors, the two linear motors are respectively driven by the piston shaft and the corresponding piston; the two ends of each piston shaft are respectively fixed to the bracket through the scroll arm leaf spring assembly and the linear arm leaf spring assembly, and the scroll arm leaf spring The assembly is arranged close to the piston; cylindrical coil springs for providing axial elastic force are respectively arranged between the end of each piston shaft away from the piston and the bracket. The linear compressor of the utility model is jointly supported by three kinds of springs, which can effectively improve the axial stiffness of the spring while ensuring the gap sealing and oil-free lubrication technology. For the linear compressor with a large mover mass, high frequency Resonance operation improves operating efficiency and realizes the matching of the characteristics of the linear compressor and the cold head of the cryogenic refrigerator.
Description
Technical field
The utility model relates to Linearkompressor, relates in particular to a kind of common valveless Linearkompressor that is used for driving Cryo Refrigerator that supports of three kinds of springs that adopts.
Background technique
In the low temperature field, the compressor that be used for to drive sterlin refrigerator and vascular refrigerator mainly is a kind of Linearkompressor of valveless, according to the moving element difference, is divided into three kinds of moving coil, moving-magnetic type and moving-iron type.This Linearkompressor adopts linear electric motor directly to drive, eliminated the connecting rod of conventional reciprocating piston compressor, coupling gap sealing simultaneously and oil-free lubrication technology make characteristics such as it has the efficient height, the life-span is long, volume is little, vibration is low, thereby obtain to pay close attention to widely and use.And adopt flexible board spring (leaf spring) to support the assurance of clearance seal and oil-free lubrication technology just.
In general Linearkompressor mainly is to adopt swirl arm leaf spring or linear arm leaf spring to support separately.The swirl arm leaf spring is most widely used a kind of leaf spring, technology maturation, and processing is simple; And the linear arm leaf spring compares the swirl arm leaf spring and has bigger footpath axial rigidity ratio, can effectively reduce radial vibration, but the course of working relative complex some.
Application number is the Linearkompressor that the Chinese patent literature of CN201010248988.5 discloses two kinds of different molded lines leaf spring support systems of a kind of employing.This Linearkompressor adopts swirl arm leaf spring and linear arm leaf spring to support jointly, can fully utilize the advantage of two kinds of leaf springs like this, better realizes clearance seal and the oil-free lubrication of compressor; Can carry out soft readjustment with the resonant frequency to Linearkompressor by changing the ratio of swirl arm leaf spring and linear arm leaf spring simultaneously.But the big or bigger Linearkompressor of mover quality for power adopts a certain leaf spring support separately or adopts two kinds of leaf springs to mix support, and the axial rigidity that all is difficult to provide bigger is to realize the high frequency operation of compressor.This will certainly reduce the operational efficiency of Linearkompressor, even can not mate use with the cold head of Cryo Refrigerator.
The model utility content
The utility model provides a kind of common Linearkompressor that supports of three kinds of springs that adopts, and has improved the axial rigidity of Linearkompressor, can realize having the high frequency efficient operation of the Linearkompressor of mover quality greatly.
For realizing the purpose of this utility model, will adopt following technological scheme:
A kind of common Linearkompressor that supports of three kinds of springs that adopts, the cylinder that comprises support, interfixes with support, with two pistons of cylinder inner wall Spielpassung and drive two coaxial reciprocating two linear electric motor of piston, two linear electric motor are respectively by piston shaft and corresponding piston drive; Two ends of each piston shaft are fixed by swirl arm leaf spring assembly and linear arm leaf spring assembly and described support respectively, and swirl arm leaf spring assembly is near the piston setting; Each piston shaft is away from being respectively equipped be used to the cylindrically coiled spring that axial elastic force is provided between the end of piston and the described support.
Swirl arm leaf spring assembly is when axial displacement is big, and its maximum stress lumped values is less relatively, adopts swirl arm leaf spring assembly at piston end, when being conducive to guarantee compressor operating, can not cause system crash owing to leaf spring breaks.The axial rigidity of linear arm leaf spring assembly, radial rigidity and footpath axle ratio of rigidity are all bigger, and bigger axial rigidity can make the compressor assembly stable operation, and bigger radial rigidity can guarantee the seal request between piston and the cylinder.Adopt cylindrically coiled spring can effectively improve the axial rigidity of spring, for the bigger Linearkompressor of mover quality, can realize the high-frequency resonance operation, improve operational efficiency, realize the characteristic coupling of Linearkompressor and Cryo Refrigerator cold head.
Install and fix for ease of cylindrically coiled spring, further reduce simultaneously the overall volume of compressor, as preferably, described piston shaft end is provided with the receiving groove of coaxial setting; Described cylindrically coiled spring one end and support interfix, and the other end is embedded in the described receiving groove.The setting of receiving groove makes that the structure of whole compressor is compacter, can satisfy the requirement of multiple special occasions.
Radially rock for avoiding in the running cylindrically coiled spring to produce, guarantee the installation strength of cylindrically coiled spring simultaneously, as preferably, the degree of depth of described receiving groove is 1/3～2/3 of piston shaft total length.The actual grade of receiving groove can be determined according to actual needs.
For guaranteeing that cylindrically coiled spring has enough big installing space, avoid the size because of installing space narrow limits cylindrically coiled spring, as preferably, described piston shaft has extension diameter section away from a side of piston, and described receiving groove is in this extension diameter section.The diameter of extension diameter section, the model size of the cylindrically coiled spring that need install is according to actual needs determined.
Described cylindrically coiled spring optional majority kind mode and support interfix, for ease of implementing, can be chosen in mounting plate or fitting seat on the described support, when selecting mounting plate, can adopt welding or screw fixation method that cylindrically coiled spring and support are fixed; When selecting fitting seat, can be chosen in the fitting seat of stationary annular on the described support, described cylindrically coiled spring one end is connected on this fitting seat.
For ease of fixing of swirl arm leaf spring assembly and linear arm leaf spring assembly, as preferably, the periphery of described piston shaft all has the limited step of two annulars, and swirl arm leaf spring assembly and the linear arm leaf spring assembly corresponding with this piston shaft are set on one of them limited step.
Compared with prior art, the beneficial effects of the utility model are embodied in:
The common use of (1) three kind of spring, when guaranteeing clearance seal and oil-free lubrication technology, can effectively improve the axial rigidity of spring, for the bigger Linearkompressor of mover quality, can realize the high-frequency resonance operation, improve operational efficiency, realize the characteristic coupling of Linearkompressor and Cryo Refrigerator cold head.
(2) by changing swirl arm leaf spring assembly and linear arm leaf spring assembly usage ratio, can be so that the resonant frequency of Linearkompressor be flexible adjustable within the specific limits.
(3) cylindrically coiled spring adopts the mounting type that is embedded in piston shaft, and effectively minification, weight reduction realizes the compactness design of Linearkompressor.
(4) for single piston shaft, adopted the bilateral leaf spring to support, be conducive to guarantee coaxality and the clearance seal of piston and cylinder like this, reduce the risk of frictional impact.
Description of drawings
Fig. 1 is the common moving-magnetic type Linearkompressor structural representations that support of three kinds of springs of the present utility model.
Fig. 2 is the floor map of swirl arm leaf spring assembly.
Fig. 3 is the floor map of linear arm leaf spring assembly.
Fig. 4 is the structural plan figure of cylindrically coiled spring.
Among the figure: 1 is shell, and 2 is linear arm leaf spring assembly, and 3 is outer washer, 4 is inner washer, and 5 is time support, and 6 is master bracket, 7 is cylinder, and 8 is port, and 9 is swirl arm leaf spring assembly, 10 is outer washer, and 11 is inner washer, and 12 is outer yoke, 13 is coil, and 14 is permanent magnet, and 15 is air gap, 16 is fitting seat, and 17 is cylindrically coiled spring, and 18 is outer retaining ring, 19 is interior yoke, 20 is extension diameter section, and 21 is interior retaining ring, and 22 is compression chamber, 23 is piston shaft, 24 is back pressure cavity, and 25 is piston, and 26 is receiving groove.
Embodiment
Explain specific embodiments of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, adopt the common Linearkompressor that supports of three kinds of springs mainly to comprise bracket component, cylinder-piston assembly, linear motor assembly and spring assembly in the utility model.Wherein bracket component comprises the support in shell 1, the shell 1, and support is made up of master bracket 6 and time support 5.Shell 1 is used for body-sealing, and inferior support 5 and master bracket 6 are used for fixing spring assembly, cylinder-piston assembly and linear motor assembly.
Cylinder-piston assembly comprises cylinder 7, two pistons 25, piston shaft 23.The sidewall of cylinder 7 is provided with port 8, and cylinder 7 two ends sections are provided with annular mounting platform, is used for interfixing with shell 1.Two pistons 25 are installed in the cylinder 7, and with cylinder 7 inwall Spielpassung, the cylinder working chamber between two pistons 25 forms compression chamber 22.Piston shaft 23 is positioned at the cylindrical channel that master bracket 6 surrounds.Piston shaft 23 has extension diameter section 20 away from a side of corresponding piston 25, and extension diameter section 20 ends are provided with the receiving groove 26 of coaxial setting, and cylindrically coiled spring 17 1 ends and shell 1 interfix, and the other end is embedded in this receiving groove 26.The periphery of piston shaft 23 all has the limited step of two annulars, and swirl arm leaf spring assembly 9 and the linear arm leaf spring assembly 2 corresponding with this piston shaft 23 are set on one of them limited step.
Linear motor assembly mainly comprises outer yoke 12, interior yoke 19, coil 13 and permanent magnet 14.Outer yoke 12 and interior yoke 19 are piled up by the silicon steel plate of sheet and form, and are linked to be a ring, and its China and foreign countries' yoke 12 is fixing with master bracket 6 by time support 5, and interior yoke 19 is enclosed within on the master bracket 6, and two ends are located by interior retaining ring 21 and outer retaining ring 18 respectively.Coil 13 is nested in the outer yoke 12, and when passing to Ac in the coil 13, permanent magnet 14 will be subjected to the axial force of alternation, makes axially reciprocating in air gap 15.
Spring assembly comprises that mainly swirl arm leaf spring assembly 9(concrete structure sees Fig. 2 for details), linear arm leaf spring assembly 2(concrete structure sees Fig. 3 for details), cylindrically coiled spring 17(concrete structure sees Fig. 4 for details) and packing ring fixed block etc.End near piston 25 is swirl arm leaf spring assembly 9, for avoiding producing dry friction, separates with swirl arm leaf spring assembly inner washer 11 and outer washer 10 between the swirl arm leaf spring assembly 9.Wherein the outer washer 10 of swirl arm leaf spring assembly 9 is fixed on the master bracket 6 by screw, and inner washer 11 links together by screw and piston shaft 23.Leaf spring away from piston 25 1 ends is linear arm leaf spring assembly 2, separates with linear arm leaf spring assembly inner washer 4 and outer washer 3 equally between the linear arm leaf spring assembly 2.Wherein outer washer 3 is fixed on time support 5 by screw, and inner washer 4 is connected on the piston shaft 23 by screw.Cylindrically coiled spring 17 1 ends are fixed on the fitting seat 16, and an end and piston shaft 23 couplings, and being embedded in the receiving groove 26 in the piston shaft 23 so just can obtain bigger axial rigidity again so that the compressor arrangement compactness time.Also can select the mode of being fixed to fix between cylindrically coiled spring 17 and the fitting seat 16.
In the as installed process, in order to guarantee the enforcement of clearance seal and oil-free lubrication technology, and can not there be too much pressurized gas to enter back pressure cavity 24 by compression chamber 22, gap between piston 25 and the cylinder 7 is generally in 10～30 mu m ranges, and is therefore very high with processing and the matching requirements of piston 25 to cylinder 7.Piston shaft 23 obtains driving force by directly being coupled with permanent magnet 14, promotes piston 25 axially reciprocatings, realizes compression and the inflation process of gas, makes that the pressurized gas in the compression chamber 22 are discharged from port 8, for Cryo Refrigerator provides source of the gas.
Above case study on implementation only is the arrangement of three kinds of springs of explanation, rather than its using scope is limited.Above-mentioned case study on implementation launches at the moving-magnetic type Linearkompressor, and three kinds of common schemes that support of spring are applicable to moving coil and moving-iron type Linearkompressor too.
As mentioned above, the utility model proposes and adopt three kinds of springs to support jointly to Linearkompressor, when guaranteeing clearance seal and oil-free lubrication technology, can effectively improve the axial rigidity of spring, for the bigger Linearkompressor of mover quality, can realize the high-frequency resonance operation, improve operational efficiency, realize the characteristic coupling of Linearkompressor and Cryo Refrigerator cold head.
Claims (6)
1. one kind is adopted the common Linearkompressor that supports of three kinds of springs, the cylinder (7) that comprises support, interfixes with support, with two pistons (25) of cylinder (7) inwall Spielpassung and drive coaxial reciprocating two linear electric motor of two pistons (25), two linear electric motor pass through piston shaft (23) and corresponding piston drive respectively;
It is characterized in that two ends of each piston shaft are fixed with described support by swirl arm leaf spring assembly (9) and linear arm leaf spring assembly (2) respectively, and swirl arm leaf spring assembly (9) arranges near piston (25); Each piston shaft (23) is away from being respectively equipped be used to the cylindrically coiled spring that axial elastic force is provided (17) between the end of piston (25) and the described support.
2. the common Linearkompressor that supports of three kinds of springs of employing according to claim 1 is characterized in that described piston shaft (23) end is provided with the receiving groove (26) of coaxial setting; Described cylindrically coiled spring (17) one ends and support interfix, and the other end is embedded in the described receiving groove (26).
3. the common Linearkompressor that supports of three kinds of springs of employing according to claim 2 is characterized in that the degree of depth of described receiving groove (26) is 1/3～2/3 of piston shaft (23) total length.
4. the common Linearkompressor that supports of three kinds of springs of employing according to claim 2 is characterized in that described piston shaft (23) has extension diameter section (20) away from a side of piston (25), and described receiving groove (26) is in this extension diameter section.
5. the common Linearkompressor that supports of three kinds of springs of employing according to claim 1 is characterized in that the fitting seat (16) of annular is fixedly arranged on the described support, and described cylindrically coiled spring one end is connected on this fitting seat.
6. the common Linearkompressor that supports of three kinds of springs of employing according to claim 1, it is characterized in that, the periphery of described piston shaft (23) all has the limited step of two annulars, and swirl arm leaf spring assembly (9) and the linear arm leaf spring assembly (2) corresponding with this piston shaft are set on one of them limited step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103969 CN203130409U (en) | 2013-03-07 | 2013-03-07 | Linear compressor jointly supported by three springs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103969 CN203130409U (en) | 2013-03-07 | 2013-03-07 | Linear compressor jointly supported by three springs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130409U true CN203130409U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320103969 Expired - Lifetime CN203130409U (en) | 2013-03-07 | 2013-03-07 | Linear compressor jointly supported by three springs |
Country Status (1)
| Country | Link |
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| CN (1) | CN203130409U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122837A (en) * | 2013-03-07 | 2013-05-29 | 浙江大学 | Linear compressor supported by three kinds of springs |
| CN104653430B (en) * | 2013-11-25 | 2017-05-03 | 青岛海尔智能技术研发有限公司 | Linear compressor with air cylinder fixing inner stator |
| CN111561437A (en) * | 2020-04-03 | 2020-08-21 | 北京空间飞行器总体设计部 | Oil-free linear compressor for heat pump system |
-
2013
- 2013-03-07 CN CN 201320103969 patent/CN203130409U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122837A (en) * | 2013-03-07 | 2013-05-29 | 浙江大学 | Linear compressor supported by three kinds of springs |
| CN103122837B (en) * | 2013-03-07 | 2015-12-02 | 浙江大学 | Adopt the Linearkompressor of three kinds of spring common support |
| CN104653430B (en) * | 2013-11-25 | 2017-05-03 | 青岛海尔智能技术研发有限公司 | Linear compressor with air cylinder fixing inner stator |
| CN111561437A (en) * | 2020-04-03 | 2020-08-21 | 北京空间飞行器总体设计部 | Oil-free linear compressor for heat pump system |
| CN111561437B (en) * | 2020-04-03 | 2021-09-24 | 北京空间飞行器总体设计部 | An oil-free linear compressor for a heat pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130814 Effective date of abandoning: 20151202 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |