CN101865111B - A resonant compressor - Google Patents

Abstract

The invention relates to a piston-type compressor which works by relying on a resonance principle without any motor, internal-combustion engine and other prime movers, and provides a resonance compressor which relies on the resonance principle, directly absorbs mechanical quantity from the vibration of the working environment, drives the compressor to work and is a waste heat utilization device. The resonance compressor is characterized in that when the natural frequency of a mechanism is regulated through feedback to be close to the environmental vibration frequency, the mechanism resonates so as to produce quite larger vibration amplitude and drive a piston to move back and forth to compress refrigerant. The resonance compressor can be applied to a plurality of occasions with vibration, such as cars, ships and trains, works by absorbing the energy which harms the vibration in the environment, not only eliminates the harmful vibration but also does not consume other energy, is energy-saving and environmental-friendly, and has the advantages of compact mechanism, reliable work, no need of motive part, good anti-explosion performance, low processing cost, simple structure, small size and light weight.

Description

A kind of resonance compressor

Technical field

The present invention relates to a kind of piston compressor that relies on resonance principle work.

Background technique

At present, known air-conditioning refrigerating piston compressor mostly is and relies on special motor or internal combustion engine drive Piston Compression refrigeration agent to be used for refrigeration.Piston compressor has compression efficiency height, advantages such as compact structure.But to expend high-grade energy when driving the motor of this compressor or internal combustion engine operation, and have cost of production and maintenance cost height, poor reliability, shortcoming such as fragile.In addition, some air condition compressor all are operated in as air condition compressor peculiar to vessel, Vehicular air-conditioner compressor in the bigger environment of vibrations, and the source of vibrations is comparatively fixing motor car engine or a marine engine of frequency, and these vibrations are harmful to often.If can absorb the mechanical energy of these harmful vibrations, and make it to be converted into the power that drives refrigeration compressor work, both reduced the vibrations of car, ship, again for compressor provides power, but also have good explosion-proof, that will be to kill two birds with one stone.

The derivation of equation of compressor simplified model principle is as follows, and model simplification figure as shown in Figure 7.

Because

Wherein T is the operation cycle, and W is a compressor horsepower, suffered average reaction when F is the Piston Compression air: F=π r ²P, r are cylinder diameter, and p is average distribution pressure;

Again: $\frac{1}{T}{\∫}_0^{T}c{\left[\stackrel{\·}{v}\left(t\right)\right]}^2\mathrm{dt}=W$

So: ${\∫}_0^T{c\left[\stackrel{\·}{v}\left(t\right)\right]}^2\mathrm{dt}={\∫}_0^{\frac{T}{2}}F\stackrel{\·}{v}\left(t\right)\mathrm{dt}$

So can obtain: $C=\frac{{\∫}_0^{\frac{T}{2}}F\stackrel{\·}{v}\left(t\right)\mathrm{dt}}{{\∫}_0^T{\left[\stackrel{\·}{v}\left(t\right)\right]}^2\mathrm{dt}}$

According to structural dynamics, the slide block movement equation is arranged again:

Wherein m is the slide block quality, and k is an elastic element rigidity

Playing corresponding homogeneous equation is:

General solution is: v (t)=Gexp (st) substitution (2)

: (ms ²+ cs+k) Gexp (st)=0

Following formula is divided by mGexp (st) and introduce following mark:

Then have:

${\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="HDA0000021125380000021.png"\; state="\{\{state\}\}">s</figure-callout>}}^2+\frac{c}{m}s+{\mathrm{\&omega;}}^2=0---\left(3\right)$

Separate:

${\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="HDA0000021125380000031.png"\; state="\{\{state\}\}">\; <figure-callout\; id="2"\; label="s"\; filenames="HDA0000021125380000021.png"\; state="\{\{state\}\}">s</figure-callout>\; </figure-callout>}}_{\mathrm{1,2}}=-\frac{c}{2m}\&PlusMinus;\sqrt{{\left(\frac{c}{2m}\right)}^2-{\mathrm{\&omega;}}^2}---\left(4\right)$

Order

Bringing (4) into gets: s _1,2=-ξ ω ± i ω _D

Wherein:

Shake frequency certainly for the damping system

Get equation

Separate for:

v(t)＝[G ₁exp(iω _Dt)+G ₂exp(-iω _Dt)]exp(-ξt) (5)

G ₁, G ₂Be the conjugation constant.G ₁＝G _R+iG _I、G ₂＝G _R-iG _I

With Euler's transformation:

Exp (i θ)=cos θ+i sin θ exp (i θ)=cos θ-isin θ substitution (5) formula has:

$v\left(t\right)=[v\left(0\right)\cos {\mathrm{\&omega;}}_{D}t+\left(\frac{\stackrel{\&CenterDot;}{v}\left(0\right)+v\left(0\right)\mathrm{\&xi;\&omega;}}{{\mathrm{\&omega;}}_D}\right){\sin \mathrm{\&omega;}}_{D}t]\exp (-\mathrm{\&xi;t})$

So the situation for the simple harmonic quantity excitation has motion equation:

$m\stackrel{\&CenterDot;\&CenterDot;}{v}\left(t\right)+c\stackrel{\&CenterDot;}{v}\left(t\right)+\mathrm{kv}\left(t\right)=\frac{p_0}{m}\sin \stackrel{\&OverBar;}{\mathrm{\&omega;}}t---\left(6\right)$

The benefit of this equation is separated and is (5) formula: v _c(t)=[G ₁Exp (i ω _DT)+G ₂Exp (i ω _DT)] exp (ξ t)

Particular solution is: $v_p\left(t\right)={\mathrm{<figure-callout\; id="1"\; label="G"\; filenames="HDA0000021125380000031.png"\; state="\{\{state\}\}">G</figure-callout>}}_1\cos \stackrel{\&OverBar;}{\mathrm{\&omega;}}t+{\mathrm{<figure-callout\; id="2"\; label="G"\; filenames="HDA0000021125380000021.png"\; state="\{\{state\}\}">G</figure-callout>}}_2\sin \stackrel{\&OverBar;}{\mathrm{\&omega;}}t---\left(7\right)$

Formula (7) substitution formula (6) is got:

$[-{\mathrm{<figure-callout\; id="1"\; label="G"\; filenames="HDA0000021125380000031.png"\; state="\{\{state\}\}">G</figure-callout>}}_1{\stackrel{\&OverBar;}{\mathrm{\&omega;}}}^2+{\mathrm{<figure-callout\; id="2"\; label="G"\; filenames="HDA0000021125380000021.png"\; state="\{\{state\}\}">G</figure-callout>}}_2\stackrel{\&OverBar;}{\mathrm{\&omega;}}\left(2\mathrm{\&xi;\&omega;}\right)+{\mathrm{<figure-callout\; id="1"\; label="G"\; filenames="HDA0000021125380000031.png"\; state="\{\{state\}\}">G</figure-callout>}}_1{\mathrm{\&omega;}}^2]\cos \stackrel{\&OverBar;}{\mathrm{\&omega;}}t$

$+[{-\mathrm{<figure-callout\; id="2"\; label="G"\; filenames="HDA0000021125380000021.png"\; state="\{\{state\}\}">G</figure-callout>}}_2{\stackrel{\&OverBar;}{\mathrm{\&omega;}}}^2-{\mathrm{<figure-callout\; id="1"\; label="G"\; filenames="HDA0000021125380000031.png"\; state="\{\{state\}\}">G</figure-callout>}}_1\stackrel{\&OverBar;}{\mathrm{\&omega;}}\left(2\mathrm{\&xi;\&omega;}\right)+{\mathrm{<figure-callout\; id="2"\; label="G"\; filenames="HDA0000021125380000021.png"\; state="\{\{state\}\}">G</figure-callout>}}_2{\mathrm{\&omega;}}^2-\frac{p_0}{m}]\sin \stackrel{\&OverBar;}{\mathrm{\&omega;t}}$

For following formula is all set up when t gets any value, needing the amount in two square brackets all is zero, thus:

-G ₁(1-β ²)+G ₂(2ξβ)＝0

$G_2(1-{\mathrm{\&beta;}}^2)-G_1\left(2\mathrm{\&xi;\&beta;}\right)=\frac{p_0}{k}$

Wherein $\mathrm{\&beta;}=\frac{\stackrel{\&OverBar;}{\mathrm{\&omega;}}}{\mathrm{\&omega;}}$

That separates must G ₁, G ₂, and substitution (6), substitution again (5) can get overall reaction and is:

$v\left(t\right)=({A\cos \mathrm{\&omega;}}_{D}t+{B\sin \mathrm{\&omega;}}_{D}t)\exp (-\mathrm{\&xi;\&omega;t})$

$+\frac{p_0}{k}\left[\frac{1}{{(1-{\mathrm{\&beta;}}^2)}^2+{\left(2\mathrm{\&xi;\&beta;}\right)}^2}\right][(1-{\mathrm{\&beta;}}^2)\sin \stackrel{\&OverBar;}{\mathrm{\&omega;}}t-2\mathrm{\&xi;\&beta;}\cos \stackrel{\&OverBar;}{\mathrm{\&omega;}}t]$

Amplitude:

$\mathrm{\&rho;}=\frac{p_0}{k}{[{(1-{\mathrm{\&beta;}}^2)}^2+{\left(2\mathrm{\&xi;\&beta;}\right)}^2]}^{-\frac{1}{2}}=\frac{p_0}{k}{[{(1-{\mathrm{\&beta;}}^2)}^2+{\left(\frac{c}{\mathrm{m\&omega;}}\mathrm{\&beta;}\right)}^2]}^{-\frac{1}{2}}$

Substitution $\mathrm{\&omega;}=\sqrt{\frac{k}{m}},$ $\mathrm{\&beta;}=\frac{\stackrel{\&OverBar;}{\mathrm{\&omega;}}}{\mathrm{\&omega;}}$ :

$\mathrm{\&rho;}=\frac{p_0}{k}{[{(1-{\mathrm{\&beta;}}^2)}^2+{\left(2\mathrm{\&xi;\&beta;}\right)}^2]}^{-\frac{1}{2}}=\frac{p_0}{k}{[{(1-\frac{m\stackrel{\&OverBar;}{\mathrm{\&omega;}}}{k})}^2+{\left(\frac{c\stackrel{\&OverBar;}{\mathrm{\&omega;}}}{k}\right)}^2]}^{-\frac{1}{2}}$

As seen from the above, amplitude (being piston stroke) is only relevant with the damping ratio of rigidity with the quality ratio of rigidity, and damping c is known again.Former suitably adjusting weight mass and elastic element rigidity can obtain the displacement of needs.After rigidity k is determined, only need suitably to regulate m and get final product.

Summary of the invention

The technical problem to be solved in the present invention is to keep piston compressor compression efficiency height, under the prerequisite of advantages such as compact structure, need not rely on motor or internal combustion engine prime movers, a kind of resonance compressor is provided, rely on resonance principle from the vibrations of working environment, directly to draw mechanical quantity, Driven Compressor work is a kind of surplus energy utility device.

The invention provides a kind of resonant spring damping mechanism.When the natural frequency that makes mechanism by feedback regulation was close with the environmental vibration frequency, mechanism can resonate, thereby produced than large amplitude driven plunger reciprocatory motion compressed refrigerant.

The technical solution used in the present invention is as follows:

Slide block 12, weight device 13 and piston 11 connect and compose the motion parts of compressor, and motion parts passes guide rail 3, are assemblied between compressor top board 1 and the base 9 by last elastic element 2 and following elastic element 4, constitute the energy transfer mechanism of compressor jointly.At the effect lower piston 11 of the energy transfer mechanism compressed refrigerant that in cylinder 10, moves reciprocatingly.The regulator 14 that is assemblied in weight device 13 inside can provide counterweight liquid delivery volume to slide along conduit 15, plays and stablize counterweight liquid, prevent counterweight liquid owing to the motion of counterweight skewness.Counterweight liquid passes the cavity that conduit 15 and regulator 14 injection regulators 14 and weight device 13 are formed by the infusion tube of feed flow regulating system, and conduit 15 can be free to slide in the hole of top board 1.

Lining B is fixed on the slide block 12, and the slide block 12 that is fixed with piston 11 is free to slide on guide rail 3 by lining B.Last elastic element 2 is assemblied between slide block 12 and the top board 1.Following elastic element 4 is assemblied between slide block 12 and the base 9.One end of guide rail 3 is fixed on the top board 1 by screw A, and the other end is fixed on the base 9 by being threaded.Weight device 13 is fixed on the slide block 12 by bolt J, and sealing gasket H is arranged between weight device 13 and the slide block 12 and seals.Following flexible ring sheet valve block 6 and last flexible ring sheet valve block 8 are fixed on valve plate 7 both sides by screw G, form gas outlet valve and suction valve respectively.Valve plate 7 is fixed on the base 9 by the end cap 5 that has air outlet hole E.End cap 5 is fixed on the base 9 by screw F.Base 9 one sides have suction port D.Cylinder 10 is fixed on the base 9 by screw C.Conduit 15 can be free to slide in the hole of top board 1, and the regulator 14 of weight device 13 can be free to slide in conduit 15, and sealing plug I is fixed on regulator 14 bottoms, seals.This compressor also can be made totally-enclosed or accessible compressor by shell is set.

For large ship, engine speed change little the time, and the environmental vibration frequency change is when little, regulator 14 and conduit 15 can save not to be adorned.

The present invention has following outstanding effect: can use the present invention on the place that vibrations are much arranged such as automobile, steamer, train: the energy operation of the harmful vibrations by absorbing environmental, and not only eliminate harmful vibrations but also do not expend other energy, energy-conserving and environment-protective; Mechanism's compactness, reliable operation; Need not driving link, explosion-proof is good, and processing cost is low, and is simple in structure, and volume is little, and is in light weight.

Description of drawings

Fig. 1 is that figure is partly cutd open in the whole assembling of compressor.

Fig. 2 is the whole assembling side elevation of compressor.

Fig. 3 is the whole assembling plan view of compressor.

Fig. 4 is that figure is partly cutd open in the whole assembling of compressor in the time of need not often regulating counterweight.

Fig. 5 is the whole assembling side elevation of compressor in the time of need not often regulating counterweight.

Fig. 6 is the whole assembling plan view of compressor in the time of need not often regulating counterweight.

Fig. 7 is the compressor model reduced graph.

Among the figure: 1 top board; Elastic element on 2; 3 guide rails; 4 times elastic elements; 5 end caps; 6 times flexible ring sheet valve blocks; 7 valve plates; Flexible ring sheet valve block on 8; 9 bases; 10 cylinders; 11 pistons; 12 slide blocks; 13 weight devices; 14 regulators; 15 conduits; The A screw; The B lining; The C screw; The D suction port; The E air outlet; The F screw; The G screw; The H sealing gasket; The I sealing plug; The J screw.

Embodiment

Describe concrete enforcement of the present invention in detail with technological scheme in conjunction with the accompanying drawings: lining B is made of antifriction material, and it act as the friction of being convenient to guarantee machining accuracy and reducing slide block 12 and guide rail 3.Elastic element 4 can be made up of elements such as spring, spring steel plates under last elastic element 2 reached.Sealing gasket H, sealing plug I is made up of rubber material, seals,

Before compressor was installed, the infusion tube with outside feed flow regulating system passed conduit 15 and regulator 14 earlier.The main vibration frequency of external environment condition injected counterweight liquid by infusion tube and plays the purpose of regulating weight device 13 quality when outside liquid-supplying system can be according to compressor operating in the cavity that regulator 14 and weight device 13 are formed.Counterweight liquid is that all bigger liquid of viscosity and density is formed, as silicone oil etc.

Then compressor base frame 9 is fixed on the platform of vibrations, or for compressor be provided with shell make totally-enclosed or accessible compressor after be fixed on the platform of vibrations.Connect air outlet E afterwards and suction port D gets final product.

The present invention is suitable for being installed in the environment of mechanical shock, and is first-class as automobile, steamer, train.During compressor operating, because the intrinsic primary frequency of compressor is close with the environmental vibration main frequency, compressor is resonated, thereby make slide block 12 along the bigger reciprocatory motion of guide rail 3 relative base 9 generation amplitudes, driven plunger 11 is the compressed refrigerant acting in cylinder 10, and pass through flexible ring sheet valve block 6 and upward outlet valve and the Aspirating valves eliminating and the inspiration refrigeration agent of flexible ring sheet valve block 8 compositions down, thereby play the purpose of compressed refrigerant.

Claims (1)

1. resonance compressor, it is characterized in that: slide block (12), weight device (13) and piston (11) connect and compose the motion parts of compressor, motion parts passes guide rail (3), be assemblied between compressor top board (1) and the base (9) by last elastic element (2) and following elastic element (4), constitute the energy transfer mechanism of compressor jointly; At the effect lower piston (11) of the energy transfer mechanism compressed refrigerant that in cylinder (10), moves reciprocatingly; Being assemblied in the inner regulator (14) of weight device (13) provides counterweight liquid delivery volume to slide along conduit (15); Counterweight liquid passes the cavity that conduit (15) and regulator (14) injection regulator (14) and weight device (13) are formed by the infusion tube of feed flow regulating system, and conduit (15) is free to slide in the hole of top board (1);

Lining (B) is fixed on the slide block (12), and the slide block (12) that is fixed with piston (11) is free to slide on guide rail (3) by lining (B); Last elastic element (2) is assemblied between slide block (12) and the top board (1); Following elastic element (4) is assemblied between slide block (12) and the base (9); One end of guide rail (3) is fixed on the top board (1) by screw (A), and the other end is fixed on by being threaded on the base (9); Weight device (13) is fixed on the slide block (12) by bolt (J), and sealing gasket (H) is arranged between weight device (13) and the slide block (12); Following flexible ring sheet valve block (6) and last flexible ring sheet valve block (8) are fixed on valve plate (7) both sides by screw (G), form gas outlet valve and suction valve respectively; Valve plate (7) is fixed on the base (9) by the end cap that has air outlet hole (E) (5); End cap (5) is fixed on the base (9) by screw (F); Base (9) one sides have suction port (D); Cylinder (10) is fixed on the base (9) by screw (C); Conduit (15) is free to slide in the hole of top board (1), and the regulator (14) of weight device (13) is free to slide in conduit (15), and sealing plug (I) is fixed on regulator (14) bottom.

2. a kind of resonance compressor according to claim 1, its feature also is: compressor is made totally-enclosed or accessible compressor by shell is set.

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