CN207454198U - Linear compressor - Google Patents
Linear compressor Download PDFInfo
- Publication number
- CN207454198U CN207454198U CN201720295471.9U CN201720295471U CN207454198U CN 207454198 U CN207454198 U CN 207454198U CN 201720295471 U CN201720295471 U CN 201720295471U CN 207454198 U CN207454198 U CN 207454198U
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- Prior art keywords
- driving mechanism
- linear compressor
- rear baffle
- shell
- piston
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Abstract
The utility model provides a kind of linear compressor.Linear compressor includes shell, and stator, piston, cylinder, mover, spring and the rear baffle of setting in the housing, the rear baffle is slidably disposed in the shell, and the driving mechanism that the rear baffle is driven to be moved in the shell is additionally provided in the shell.It realizes the reliability and efficiency for improving linear compressor, and reduces energy consumption.
Description
Technical field
The utility model is related to compressor more particularly to a kind of linear compressors.
Background technology
At present, the compressor used in refrigeration equipment has rotary and two kinds linear, straight line compression of the prior art
Machine generally includes the components such as shell, stator, coil, mover, piston, cylinder, rear baffle and spring composition；Wherein, set on mover
Magnet is equipped with, magnet is inserted in the magnetic field space of stator formation, and coil is equipped in stator, and one end of piston is connected on mover,
The head of piston is slidably disposed in the inner cavity of cylinder, and aspiration column is additionally provided on shell.China Patent No.
200510118582 disclose a kind of piston displacement device for reciprocating compressor, by the way that piston mobile motor is set to adjust
The distance between piston and mover, so as to fulfill the stroke of adjustment piston, to meet the tune of different operating mode lower cylinder volume sizes
Section demand.But since piston mobile motor and mating gear structure are moved back and forth all in accordance with piston and mover one are logical, add
Moving component is weighed（Piston and mover）Weight, serious vibration during compressor operating is caused, for a long time using relative motion
The reliability of component will decline, and be susceptible to damage, also, after the increase of moving component weight, the energy consumption of compressor also be caused to increase
Add.How to design the linear compressor that a kind of reliability is high, energy loss is small and electric efficiency is high is that the utility model to be solved
Certainly the technical issues of.
The content of the invention
Technical problem to be solved in the utility model is：A kind of linear compressor is provided, realizes and improves linear compressor
Reliability and efficiency, and reduce energy consumption.
Technical solution provided by the utility model is a kind of linear compressor, the linear compressor include shell and
Stator, piston, cylinder, mover, spring and rear baffle in the housing is set, and the rear baffle is slidably disposed in institute
It states in shell, the driving mechanism that the rear baffle is driven to be moved in the shell is additionally provided in the shell.
Further, an at least guide rod is provided in the shell, pilot hole is provided on the rear baffle, it is described
Guide rod is inserted in the pilot hole.
Further, the driving mechanism is fixed in the housing, after the movement portion connection of the driving mechanism is described
Baffle.
Further, it is provided with elastic component between the driving mechanism and the shell.
Further, the driving mechanism is fixed on the stator, after the connection of the movement portion of the driving mechanism is described
Baffle.
Further, the driving mechanism is fixed on the rear baffle, described in the movement portion connection of the driving mechanism
Shell or the stator.
Further, the driving mechanism is linear motor；Alternatively, the driving mechanism includes motor, screw rod and nut,
The screw flight is connected in the nut, and the screw rod is connected with the shaft of the motor.
Linear compressor provided by the utility model moves in the shell by using driving mechanism driving rear baffle, after
After the position of baffle changes, the decrement of spring will be changed, and in piston follows mover moving process, due to the compression of spring
Amount is different, and the power that spring is applied to mover is also just different, so as to can the stroke that moves back and forth of regulating piston, realize and adjust indirectly
The volume of displacements of cylinders, and since driving mechanism is only driving rear baffle movement, driving mechanism is not connected with moving component, so as to not
The total weight of moving component can be had an impact, reduce energy loss, realize the reliability and efficiency for improving linear compressor, and
Reduce energy consumption.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram one of the utility model linear compressor；
Fig. 2 is the structure diagram two of the utility model linear compressor；
Fig. 3 is the partial structural diagram one of the utility model linear compressor；
Fig. 4 is the partial structural diagram two of the utility model linear compressor.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without making creative work, belongs to
The scope of the utility model protection.
As shown in Figure 1, the present embodiment linear compressor, including shell 1 and the piston 2 being arranged in the shell 1,
Cylinder 3, stator 4, coil 6, mover 7, spring 81 and rear baffle 8, the head 21 of piston 2 can be slided in cylinder 3, cylinder 3
On be provided with exhaust valve plate 31, piston 2 is fixed on mover 7, and spring 81 is positioned by rear baffle 8,7 connecting spring 81 of mover,
Coil 6 is mounted on stator 4, and the above is the configuration structure form of conventional linear compressor, and the present embodiment volume of cylinder can
Mode linear compressor is not limited the specific mounting means of associated components.Do not increasing moving component weight to realize
Under the premise of adjust the volume of cylinder 3 in compressor, be additionally provided with to drive the rear baffle 8 in the shell 1 described
The driving mechanism moved in shell 1, corresponding, the rear baffle 8 is slidably disposed in the shell 1.
Specifically, the utilization driving mechanism 5 of the present embodiment linear compressor drives rear baffle 8 to be moved in shell 1, from
And changing the decrement of spring 81, the spring 81 of different compression degrees will apply mover 7 different spring forces, so as to cause dynamic
The resting position and shift motion of the piston 2 connected on son 7 are different, so as to realize the volume for adjusting cylinder 3.Such as：
It during the load increase of refrigeration equipment, then needs to increase the volume of cylinder 3, at this point, driving mechanism 5 drives rear baffle 8 to away from gas
The direction movement of cylinder 3, when keeping tdc position operation, the increase of the dischargeable capacity of cylinder 3 can play the cold of bigger, from
And can meet refrigeration equipment load increases required refrigerating capacity increase；After the load of refrigeration equipment declines, then need to reduce
The volume of cylinder 3 at this point, driving mechanism 5 drives rear baffle 8 to be moved to close to the direction of cylinder 3, is keeping tdc position operation
When, the reduction of the dischargeable capacity of cylinder 3, the cold of performance declines, and reaches with load decline synchronous.Such as：As described in Figure 1, when
After load reduction, there is gap between the head 21 of piston 2 and air bleeding valve 31, cause linear compressor that cannot keep TCD positions
Operation, as shown in Fig. 2, driving mechanism 5 drives rear baffle 8 after being moved close to the position of cylinder 3, head 21 and the row of piston 2
Gap between air valve 31 becomes smaller, so that linear compressor keeps the operation of TCD positions.
Further, compared with the prior art in linear compressor, the rear baffle 8 in the present embodiment linear compressor is
It is transportable, it is described in order to ensure rear baffle 8 can be moved smoothly and can also provide reliable support to spring 81
An at least guide rod 9 is provided in shell 1, pilot hole is provided on the rear baffle 8（It is unmarked）, the guide rod 9 insert
In the pilot hole.Specifically, guide rod 9 is fixed in shell 1, rear baffle 8 can be moved along guide rod 9, meanwhile, it leads
Rear baffle 8 can reliably be supported to bar 9.Wherein, guide rod 9 can be directly anchored on shell 1, can also be fixed
On the first-class fixed component of stator 4.
Wherein, there are many forms for the specific manifestation entity of driving mechanism 5 and mounting means.Such as：As shown in figure 3, driving
Mechanism 5 is fixed in the housing, and the movement portion of the driving mechanism 5 connects the rear baffle 8.Specifically, driving mechanism 5 can
Think linear motor, the movement portion connection rear baffle 8 of linear motor；Alternatively, driving mechanism 5 includes motor and screw rod, motor band
Dynamic screw rod rotates, and screw rod may be threadably coupled on the rear baffle 8 so that rear baffle 8 to be driven to move, wherein, it can on rear baffle 8
To start threaded hole, alternatively, being provided with nut structure on rear baffle 8；It is mounted on for driving mechanism 5 on shell 1, in order to reduce
The vibrations that the operation of driving mechanism 5 generates, elastic component 51 is provided between the driving mechanism 5 and the shell 1.Alternatively, such as Fig. 4
Shown, driving mechanism 5 is fixed on the stator 4, and the movement portion of the driving mechanism 5 connects the rear baffle 8.Alternatively, such as
Shown in Fig. 1, driving mechanism 5 is fixed on the rear baffle 8, and the movement portion of the driving mechanism 5 connects the shell 1 or described
Stator 4.
And during actually controlling, the position and power or stroke of top dead-centre are compared, utilize power or stroke
Parameter the volume of cylinder is adjusted, it is specific as follows：
It is compared using power, specific control method includes：
Step 1: top dead-centre detects：Linear compressor is powered start after, when linear compressor is under top dead-centre state,
The initial power P0 of the detection of straight lines compressor or priming stroke X0 of piston.Specifically, top dead-centre be detected as gradually increase line
Property compressor power P, during power P is increased, the resonant frequency f of Linearkompressor also changes therewith, when resonance frequency
When the variation tendency of rate f changes, then Linearkompressor under this state reaches top dead-centre state, records under top dead-centre state
The initial power P0 of linear compressor, wherein, when Linearkompressor resonant frequency with power change rate df/dP=0 when, then
Linearkompressor under this state reaches top dead-centre state；Alternatively, when the resonant frequency of Linearkompressor is to the secondary derivation of power
When inflection point occurs in value, then Linearkompressor under this state reaches top dead-centre state.
Step 2: volume of cylinder is adjusted：As the realtime power Pt of linear compressor<During P0, driving mechanism driving rear baffle
It is moved towards close to cylinder direction, until piston is in the operating status of top dead-centre again；As the realtime power Pt of linear compressor>
During P0, driving mechanism drives rear baffle to be moved towards away from cylinder direction, until piston is in the operating status of top dead-centre again.
It is compared using stroke, specific control method includes：
Step 1: top dead-centre detects：Linear compressor is powered start after, when linear compressor is under top dead-centre state,
The priming stroke X0 of the piston of detection of straight lines compressor.Specifically, gradually increase or reduce the piston stroke X of linear compressor,
During piston stroke X increases or reduces, the resonant frequency f of linear compressor also changes therewith, when the change of resonant frequency f
When change trend changes, then linear compressor under this state reaches top dead-centre state, when recording top dead-centre state, piston
Priming stroke X0.Wherein, when linear compressor resonant frequency with piston stroke change rate df/dX=0 when, then under this state
Linear compressor reach top dead-centre state；Alternatively, when the resonant frequency of linear compressor goes out the secondary derivation value of piston stroke
During existing inflection point, then linear compressor under this state reaches top dead-centre state.And piston stroke X meets equation below：；Wherein,
X ' be piston movement velocity, U（t）For the supply voltage of linear compressor, I is the supply current of linear compressor, and R is straight line
The resistance of compressor, L are the inductance of linear compressor, and c is the capacitance of linear compressor, is constant of the machine.
Step 2: volume of cylinder is adjusted：As the real-time stroke Xt of piston<During X0, driving mechanism drives rear baffle towards close
Cylinder direction is moved, until piston is in the operating status of top dead-centre again；As the real-time stroke Xt of piston>During X0, driving machine
Structure drives rear baffle to be moved towards away from cylinder direction, until piston is in the operating status of top dead-centre again.
Linear compressor provided by the utility model moves in the shell by using driving mechanism driving rear baffle, after
After the position of baffle changes, the decrement of spring will be changed, and in piston follows mover moving process, due to the compression of spring
Amount is different, and the power that spring is applied to mover is also just different, so as to can the stroke that moves back and forth of regulating piston, realize and adjust indirectly
The volume of displacements of cylinders, and since driving mechanism is only driving rear baffle movement, driving mechanism is not connected with moving component, so as to not
The total weight of moving component can be had an impact, reduce energy loss, realize the reliability and efficiency for improving linear compressor, and
Reduce energy consumption.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (7)
1. a kind of linear compressor, the linear compressor include shell and set stator in the housing, piston,
Cylinder, mover, spring and rear baffle, the head of the piston can be slided in the cylinder, and exhaust is provided on the cylinder
Valve block, the piston are fixed on the mover, and the spring is positioned by the rear baffle, and the mover connects the bullet
Spring, coil are mounted on the stator, which is characterized in that the rear baffle is slidably disposed in the shell, described outer
The driving mechanism that the rear baffle is driven to be moved in the shell is additionally provided in shell.
2. linear compressor according to claim 1, which is characterized in that at least one guiding is provided in the shell
Bar is provided with pilot hole on the rear baffle, and the guide rod is inserted in the pilot hole.
3. linear compressor according to claim 1, which is characterized in that the driving mechanism is fixed in the housing,
The movement portion of the driving mechanism connects the rear baffle.
4. linear compressor according to claim 3, which is characterized in that set between the driving mechanism and the shell
Flexible part.
5. linear compressor according to claim 1, which is characterized in that the driving mechanism is fixed on the stator,
The movement portion of the driving mechanism connects the rear baffle.
6. linear compressor according to claim 1, which is characterized in that the driving mechanism is fixed on the rear baffle
On, the movement portion of the driving mechanism connects the shell or the stator.
7. linear compressor according to claim 1, which is characterized in that the driving mechanism is linear motor；Alternatively, institute
Stating driving mechanism includes motor, screw rod and nut, and the screw flight is connected in the nut, the screw rod and the motor
Shaft connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295471.9U CN207454198U (en) | 2017-03-24 | 2017-03-24 | Linear compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295471.9U CN207454198U (en) | 2017-03-24 | 2017-03-24 | Linear compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454198U true CN207454198U (en) | 2018-06-05 |
Family
ID=62246727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720295471.9U Active CN207454198U (en) | 2017-03-24 | 2017-03-24 | Linear compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454198U (en) |
-
2017
- 2017-03-24 CN CN201720295471.9U patent/CN207454198U/en active Active
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