CN207795853U - A kind of air bearing devices for free-piston type refrigeration machine - Google Patents
A kind of air bearing devices for free-piston type refrigeration machine Download PDFInfo
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- CN207795853U CN207795853U CN201721659583.4U CN201721659583U CN207795853U CN 207795853 U CN207795853 U CN 207795853U CN 201721659583 U CN201721659583 U CN 201721659583U CN 207795853 U CN207795853 U CN 207795853U
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- admission hole
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Abstract
The utility model discloses a kind of air bearing devices for free-piston type refrigeration machine, including cylinder, piston only, inflatable chamber, current-limiting mechanism and one-way air inlet mechanism, the inflatable chamber is set to inside the piston only, the current-limiting mechanism being embedded on piston only outer surface is connected to inflatable chamber, inflatable chamber is connected to by one-way air inlet mechanism with piston only with the compression chamber uniline that cylinder is formed close to piston only top side, one-way air inlet mechanism includes the valve seat equipped with air admission hole, the filter core that the lift automatic control reed of air admission hole can be covered and be set in air admission hole, the both ends of lift automatic control reed are respectively fixedly connected in the outlet side both sides of air admission hole, filter core is placed in air admission hole；The utility model is equipped with the fixed lift automatic control reed in both ends, and unidirectional opening degree is limited, fills lift limiter without another, if filter core is avoided because of blocking influence operation, simple in structure, easy processing and convenient for maintenance, the service life that can extend air bearing devices is long.
Description
Technical field
The utility model is to be related to a kind of air bearing devices, is to be related to one kind for free-piston type to freeze specifically
The air bearing devices of machine belong to fluid circulating devices technical field.
Background technology
It is advanced that free-piston type refrigeration machine uses linear motor driving, flat spring support, clearance seal, air pressure driving etc.
Technology controls the fortune of pushing piston its main feature is that carrying out swell refrigeration using pneumatics by gas pressure difference and spring
It is dynamic, rather than driven using motor.Therefore, have compact-sized, light-weight, oil-free, moving component is few, and reliability is high, low noise
The advantages that sound, low vibration, not easy to wear and refrigerating capacity is easy to adjust.
Although free-piston type refrigeration machine has the advantages that above, the service life is to restrict its big bottleneck for using.Gas
The use of bearing can reduce the friction between moving component, increase the service life of free-piston type refrigeration machine.It is in piston and gas
Pressure air film is formed between cylinder, is supported load, is reduced contact friction therebetween, so that refrigeration machine meets the requirement of long-life, and
Improve refrigeration machine performance.Compared with fluid lubricated bearing, gas bearing does not need lubricating oil, and only depended on pressure gas is in supported portion
Support air film is formed between part contact surface in small gap, to offset lateral force, there is pollution-free, high intensity, high-precision, low work(
The advantages that consumption.
At the inflatable chamber air inlet of existing gas bearing by equipped with check valve control gas unidirectional disengaging, it is specifically logical
It crosses unilateral fixed tongue type valve block and coordinates the lift limiter of control valve block open degree to realize, it is clear that is this to be limited with lift
The check valve of device processed increases the complexity of structure, increases the probability of gas bearing blocking, and in not lift limiter
In the case of, the open degree of valve block is determined by the rigidity of active force and valve block suffered by valve block, and the valve block of this kind of form is not because have
Lift limiter effect is easy to occur fatigue with the growth of usage time, and control accuracy declines apparent.Moreover, working as gas bearing
In gas contain the operating status that impurity can influence piston, gas supply hole plug, working efficiency and kinematic accuracy occur reduces etc.
Problem shortens the service life of gas bearing.Therefore, one kind is simple in structure, is not easy to plug there is an urgent need for designing by those skilled in the art
The air bearing devices for free-piston type refrigeration machine, processing and manufacturing reliable with principle be simple and spy convenient for safeguarding
Point, to meet with long service life application demand of the people to air bearing devices.
Utility model content
In view of the above-mentioned problems existing in the prior art and demand, the purpose of this utility model be to provide it is a kind of it is simple in structure,
The air bearing devices for free-piston type refrigeration machine being not easy to plug, have that principle is reliable, processing and manufacturing is simple and is convenient for
The characteristics of safeguarding, to meet with long service life application demand of the people to air bearing devices.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of air bearing devices for free-piston type refrigeration machine, including cylinder, piston only, inflatable chamber, current limliting
Mechanism and one-way air inlet mechanism, the inflatable chamber are set to inside the piston only, are embedded at the piston only outer surface
On current-limiting mechanism be connected to the inflatable chamber, side of the inflatable chamber at the top of the piston only passes through described unidirectional
Admission gear's uniline is communicated in the compression chamber that the piston only is formed with the cylinder, it is characterised in that：The one-way air inlet
Mechanism includes the valve seat for being equipped with air admission hole, can cover the lift automatic control reed of the air admission hole and be set in the air admission hole
Filter core, the both ends of the lift automatic control reed are respectively fixedly connected in the outlet side both sides of the air admission hole, and the filter core is set
It is placed in the air admission hole.
Preferably, the geometric center position of the lift automatic control reed coincides with the air admission hole center.
Preferably, the lift automatic control reed is made of elastic stalloy, the thickness of the lift automatic control reed
For 0.05mm-0.15mm.
Preferably, the lift automatic control reed is semi-circular shape.
Preferably, the air admission hole is circular shape hole, and the filter core is set in the big stomidium of the stepped hole.
As further preferred scheme, the filter core is fixed on by fastener limit in the stepped hole.
As further preferred scheme, the fastener is placed on by thermal expansion and contraction principle in the stepped hole.
A kind of embodiment, the filter core include the 10-20 layer stainless steel cloths being staggeredly superimposed, every layer of stainless steel wire
The string diameter of net is 20-30 microns, and mesh is 400-600 mesh.
A kind of embodiment, the inflatable chamber are the cavity body structure of ring section, and the valve seat is and the inflatable chamber phase
The loop configuration of adaptation, the excircle and inner periphery of the valve seat respectively by equipped with screw thread and sealing ring and the inflatable chamber
Madial wall closely connects.
Compared with prior art, the utility model has the advantages that：
A kind of air bearing devices for free-piston type refrigeration machine of the utility model, due to equipped with lift automatic control
Reed by the way that the both ends of lift automatic control reed are fixedly connected, lift automatic control reed can unidirectional opening and closing degree be limited and endurance
Property it is strong, be not necessarily to additionally mounted lift limiter, keep one-way air inlet mechanism structure simpler, compact, one-way air inlet mechanism with fill
Air cavity is threadedly coupled, and is fixed without snap ring, is further simplified one-way air inlet mechanism structure, is reduced blocking probability；The friendship being equipped with
The filter core of mistake superposition design can filter out the impurity in gas well, avoid the fortune caused by gas bearing structure blocks
Row is abnormal；The design of valve seat stomata step type and the use of fastener can preferably fix filter core, prevent it from shedding into pressure
Contracting chamber damages and the reduction of filter effect；In addition, the utility model also has, principle is reliable, processing and manufacturing simply and just
In safeguard the characteristics of, the service life that can extend air bearing devices is long, has good progressive and actual application value.
Description of the drawings
Fig. 1 is a kind of air bearing devices structure for free-piston type refrigeration machine that the utility model embodiment provides
Schematic diagram；
Fig. 2 is the piston decomposition state schematic diagram that the utility model embodiment provides；
Fig. 3 is the structural schematic diagram for the one-way air inlet mechanism that the utility model embodiment provides；
Fig. 4 is the sectional view for the one-way air inlet mechanism that the utility model embodiment provides；
Fig. 5 is the structural schematic diagram for the filter core that the utility model embodiment provides.
Figure label is schematically as follows：1, cylinder；2, piston only；3, inflatable chamber；31, sealing ring；4, current-limiting mechanism； 5、
One-way air inlet mechanism；51, valve seat；52, air admission hole；53, lift automatic control reed；531, screw；54, filter core；55, fastener.
Specific implementation mode
The technical solution of the utility model is described in further detail below in conjunction with drawings and examples.
Embodiment
In conjunction with shown in Fig. 1 to Fig. 5, a kind of gas bearing for free-piston type refrigeration machine provided in this embodiment fills
It sets, including cylinder 1, piston only 2, inflatable chamber 3, current-limiting mechanism 4 and one-way air inlet mechanism 5, the inflatable chamber 3 is set to described
Inside piston only 2, the current-limiting mechanism 4 being embedded on 2 outer surface of the piston only is connected to the inflatable chamber 3, described to fill
Air cavity 3 is communicated in the piston only 2 close to the side at 2 top of the piston only by 5 uniline of one-way air inlet mechanism
The compression chamber formed with the cylinder 1, the one-way air inlet mechanism 5 includes valve seat 51 equipped with air admission hole 52, it is described to cover
The lift automatic control reed 53 of air admission hole 52 and the filter core 54 being set in the air admission hole 52, the lift automatic control reed 53
Both ends are fixedly connected on the outlet side both sides of the air admission hole 52 by screw 531 respectively, the filter core 54 be set to it is described into
In stomata 52, since by being fixedly connected with the both ends of lift automatic control reed 53, lift automatic control reed 53 can unidirectionally open and close journey
Spend it is limited, be not necessarily to additionally mounted lift limiter.
Preferably：
The geometric center position of the lift automatic control reed 53 coincides with the air admission hole center, as Figure 1-Figure 4.
The lift automatic control reed 53 is made of elastic stalloy, and the thickness of the lift automatic control reed 53 is 0.05mm-
0.15mm。
The lift automatic control reed 53 is semi-circular shape, as shown in Figure 2 and Figure 3.
As another preferred embodiment：
The air admission hole 52 is circular shape hole, and the filter core 54 is set in the big stomidium of the stepped hole, the filter core
54 are fixed on by the limit of fastener 55 in the stepped hole, and the fastener 55 is placed on described by thermal expansion and contraction principle
In stepped hole, as Figure 1 and Figure 4.
In the present embodiment, as shown in figure 5, the filter core 54 includes the 10-20 layer stainless steel cloths of staggeredly superposition, every layer
The string diameter of the stainless steel cloth is 20-30 micron, and mesh is 400-600 mesh, it is contemplated that the aging of material and polluted gas
A nanometer material for core also can be used in problem, the filter core 54.
In the present embodiment, as Figure 1-Figure 4, the inflatable chamber 3 is the cavity body structure of ring section, the valve seat 51
For loop configuration compatible with the inflatable chamber 3, the excircle and inner periphery of the valve seat 3 respectively by equipped with screw thread and
Sealing ring 31 is closely connect with 3 madial wall of the inflatable chamber.
It is last it is necessarily pointed out that：The foregoing is merely the preferable specific implementation modes of the utility model, but this
The protection domain of utility model is not limited thereto, and any one skilled in the art discloses in the utility model
In technical scope, the change or replacement that can be readily occurred in should be covered within the scope of the utility model.
Claims (9)
1. a kind of air bearing devices for free-piston type refrigeration machine, including cylinder, piston only, inflatable chamber, current limliting machine
Structure and one-way air inlet mechanism, the inflatable chamber are set to inside the piston only, are embedded on the piston only outer surface
Current-limiting mechanism be connected to the inflatable chamber, side of the inflatable chamber at the top of the piston only by it is described unidirectionally into
Mechanism of qi structure uniline is communicated in the compression chamber that the piston only is formed with the cylinder, it is characterised in that：The one-way air inlet machine
Structure includes the valve seat for being equipped with air admission hole, can cover the lift automatic control reed of the air admission hole and be set in the air admission hole
The both ends of filter core, the lift automatic control reed are respectively fixedly connected in the outlet side both sides of the air admission hole, the filter core setting
In in the air admission hole.
2. air bearing devices according to claim 1, it is characterised in that：The geometric center position of the lift automatic control reed
It sets and coincides with the air admission hole center.
3. air bearing devices according to claim 1, it is characterised in that：The lift automatic control reed is by elastic stalloy
It is made, the thickness of the lift automatic control reed is 0.05mm-0.15mm.
4. air bearing devices according to claim 1, it is characterised in that：The lift automatic control reed is semi-circular shape.
5. air bearing devices according to claim 1, it is characterised in that：The air admission hole is circular shape hole, described
Filter core is set in the big stomidium of the stepped hole.
6. air bearing devices according to claim 5, it is characterised in that：The filter core is fixed on by fastener limit
In the stepped hole.
7. air bearing devices according to claim 6, it is characterised in that：The fastener is put by thermal expansion and contraction principle
It sets in the stepped hole.
8. air bearing devices according to claim 1, it is characterised in that：The filter core includes the 10-20 being staggeredly superimposed
The string diameter of layer stainless steel cloth, every layer of stainless steel cloth is 20-30 microns, and mesh is 400-600 mesh.
9. air bearing devices according to claim 1, it is characterised in that：The inflatable chamber is the cavity knot of ring section
Structure, the valve seat are loop configuration compatible with the inflatable chamber, and the excircle and inner periphery of the valve seat are respectively by setting
Some screw threads and sealing ring are closely connect with the inflation chamber inner sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721659583.4U CN207795853U (en) | 2017-12-04 | 2017-12-04 | A kind of air bearing devices for free-piston type refrigeration machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721659583.4U CN207795853U (en) | 2017-12-04 | 2017-12-04 | A kind of air bearing devices for free-piston type refrigeration machine |
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| Publication Number | Publication Date |
|---|---|
| CN207795853U true CN207795853U (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721659583.4U Active CN207795853U (en) | 2017-12-04 | 2017-12-04 | A kind of air bearing devices for free-piston type refrigeration machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223576A (en) * | 2017-12-04 | 2018-06-29 | 陕西仙童科技有限公司 | A kind of air bearing devices for free-piston type refrigeration machine |
| CN110529505A (en) * | 2019-09-09 | 2019-12-03 | 珠海格力电器股份有限公司 | Bearing mounting structure, mounting, dismounting and detecting method thereof and motor |
-
2017
- 2017-12-04 CN CN201721659583.4U patent/CN207795853U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223576A (en) * | 2017-12-04 | 2018-06-29 | 陕西仙童科技有限公司 | A kind of air bearing devices for free-piston type refrigeration machine |
| CN108223576B (en) * | 2017-12-04 | 2024-06-04 | 陕西仙童科技有限公司 | Gas bearing device for free piston refrigerator |
| CN110529505A (en) * | 2019-09-09 | 2019-12-03 | 珠海格力电器股份有限公司 | Bearing mounting structure, mounting, dismounting and detecting method thereof and motor |
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