CN1963214A - Volume varying device for rotating blade type compressor - Google Patents

Abstract

The volume changeable device of a circling vane compressor comprises the compressing section, driving section, round vanes with circling vanes of the compressing section, compressing chamber formed by the ring space and outside of the cylinder interior and the said round vane having a linear slider in straight reciprocating movement along the cylinder's sliding guide face, and a pair of side through channel symmetrically set on both sides of the broken part with whose middle as the center on the sliding contact surface one side of the linear slider. Opposite to the linear slider, inside the said cylinder, a sliding valve is set to move forward, set back, contact or open the broken part driven by the driving part. With circling vanes circling in the cylinder with simple valve operation, it can realize compression model change both in the inside compressing chamber or the outside compressing chamber, and change the volume of the compressor, not only ensuring the using economy of the compressor, but also preventing the abrasion for relevant components and supply waste while turning on or off the compressor.

Description

The capacity varying device of rotating blade compressor

Technical field

The invention relates to rotating blade compressor, particularly about possessing 2 kinds of pattern conversions that can optionally compress or all compress at inside and outside side pressing chamber in the inboard compression chamber of described rotating blade compressor, rotating blade compressor capacity varying device that thus can the conversion compressor capacity.

Background technique

Usually, rotating blade compressor forms inside and outside side pressing chamber by the moving motion of blade in the inside of cylinder, and the compressor among Fig. 1 is the low pressure type sealing shape moving compressor that is used for the sealing shape cold medium compressor of refrigerator and air-conditioning etc.

In the described low pressure type moving compressor, drive portion D and press part P have been arranged on housing 1 inside, described drive portion D and press part P are interconnected by two ends rotary vertically disposed crankshaft 8 under the support of main frame 6 and sub-frame 7 up and down, and the power by crankshaft 8 described drive portion D can pass to press part P thus.

Described drive portion D is by the stator 2 that is fixed between described main bearing 6 and the supplementary bearing 7, be arranged on stator 2 inside, behind turn-on power, the rotor 3 that rotates the crankshaft 8 that vertically runs through setting constitutes, on the top and the bottom of described rotor 3, be provided with symmetrical equilibrium awl 3a, prevented that the rotation of the crankshaft 8 that crank pin 81 causes is unbalanced.

The orbiting vane 5 that the projection 55 of described press part P by the bottom is connected on the crank pin 81 rotates in cylinder 4 inside, compression is inhaled into the cold media air of cylinder 4 inside thus, cylinder 4 has comprised outstanding interior side ring 41 downwards, and described orbiting vane 5 makes circular blade vertically protrude in top, make the inside of its annular space 42 that in described, forms between side ring 41 and the inwall be rotated motion, under such rotatablely moving, be formed centrally inside and outside side pressing chamber in described circular blade 51 being, and at the interior outside delivery outlet 44 of the compressed cold media air in the inside of pressing chamber by top cylinder 4,44a outputs to the outside of cylinder 4.

And, between described main frame 6 and orbiting vane 5, possessed the Oudan ring 9 that prevents to be used for rotation, and the oil supply gallery 82 that run through upper and lower settings in the inside of crankshaft 8 under the effect of the oil pump 83 that is arranged at crankshaft 8 lower ends, provides lubricant oil for press part P thus.

Here, orbiting vane compressor among the present invention is the interior outside delivery outlet 44 that is passed through cylinder 4 by the cold media air of press part P compression, 44a outputs to the low pressure type rotating blade compressor in hyperbaric chamber, top 12, in described hyperbaric chamber 12, output tube 13 runs through housing 1 and is provided with, and in the bottom of described output tube 13, promptly on a side of main frame 6, run through housing 1 and be provided with intake line 11.

As mentioned above, after the present invention connects power supply, rotor 3 movings of drive portion D, crankshaft 8 rotates thus, and along with the rotation of crankshaft 8, the eccentric orbiting vane 5 that is provided with the press part P of lower protrusion 55 is done moving along the moving radius and is moved on the crank pin 81 of crankshaft 8.

Thus, be inserted into the inwall of cylinder 4 and the annular blade 51 on the orbiting vane that changes shape space 42 5 between the interior side ring 41 and do the motion that rotates together, compression is inhaled into the cold media air of described annular space 42 inside, at this moment in circular blade 51 being, the inside of annular space 42 has been formed centrally inside and outside side pressing chamber, and compressed cold media air is by the interior outside delivery outlet 44 of the cylinder 4 that communicates with described pressing chamber respectively, 44a outputs to hyperbaric chamber, top 12, sends the cold media air of High Temperature High Pressure thus by output tube 13.

Fig. 2 is the exploded perspective view of the press part of Fig. 1.

As shown in the figure, the top of supporting crankshaft 8 among the described press part P makes on the upper end portion of main frame 6 of its rotation and is provided with the orbiting vane 5 that combines with described crankshaft 8, and has possessed the cylinder 4 that combines with main frame 6 on the top of described orbiting vane 5.Described cylinder 4 has formed suction port 43 at side direction, and has formed interior outside delivery outlet 44 on the opposite side cylinder 4 of suction port 43,44a.

And, formed the through hole of opening to the top and the slide block 54 of described circular blade 51 52 on the circular blade 51 on the top of orbiting vane 5, the cold media air that the suction port 43 by described cylinder 4 is sucked can be inhaled into the inboard of circular blade 51.Described slide block 54 is arranged on the opening portion 53 of circular blade 51, has the low pressure of division and on high-tension side function.

The symbol 9 expression Oudan rings that do not have explanation here.

Fig. 3 is the working state figure of the compression process of presentation graphs 2.

As shown in the figure, among the present invention, when the power that the orbiting vane 5 (with reference to Fig. 1) of press part P receives drive portion D by crankshaft 8 starts, be inserted into cylinder 4 annular space 42 inside orbiting vane 51 as shown by arrows, the moving motion is done in the inside of the annular space 42 that forms between the inwall of cylinder 4 and interior side ring 41, and compression flows into the cold media air of annular space 42 inside by suction port.

Promptly, in initial working state angle of rotation is under 0 °, through hole 52 by described suction port 43 and circular blade 51, inboard suction chamber A1 sucks cold media air, the outside pressing chamber B2 of circular blade begins to compress under the state of suction port 43 and outside delivery outlet 44a cut-out, and the compression of cold media air and output will be carried out simultaneously among the A2 of inboard compression chamber.

Having rotated angle of rotation is under 90 ° the state, the compression of circular blade outside pressing chamber B2 is proceeded, and among the pressing chamber A2 of circular blade inboard, be compressed the The work is nearly finished of cold media air by inboard delivery outlet 44 outputs, produce the outside suction chamber B1 that a last stage does not have, suck cold media air by suction port 43.

Angle of rotation in rotation is under 180 ° the state, inboard suction chamber A1 in last stage disappears, begin to compress and described inboard suction chamber A1 becomes pressing chamber A2, and outside suction chamber B2 communicates with outside delivery outlet 44a, begins to export the cold media air after being compressed.

Having rotated angle of rotation is under 270 ° the state, the pressing chamber B2 in the circular blade outside exports compressed cold media air by outside delivery outlet 44a and closes to an end, inboard compression chamber A2 proceeds compression, and begin to compress for the suction chamber B1 in the outside, rotating angle of rotation under this state again is 90 °, outside suction chamber B1 in last stage becomes outside pressing chamber B2, compress for outside pressing chamber B2 thus, and get back to initial state, rotating a circle with bent axle thus is a circulation, repeatedly carry out said process.

Simultaneously, in the refrigeration plant of refrigerator or air-conditioning etc., energy-saving operation is to stop compressor operation when true temperature reaches setting temperature, and when true temperature rises and surpass setting temperature, start compressor once more, so undertaken by compressor ON/OFF action repeatedly, and common compressor relatively normally moves, consumption electric power when it starts is big, and because pressurized gas load that unexpected startup and startup just cause and the interference between the component, cause the wearing and tearing of component, thereby can shorten the life-span of compressor.

Therefore, require compressor under the open/close prerequisite of avoiding repeatedly, the change capacity.And the method that can change compressor capacity has controlling and driving portion, promptly control the revolution of motor, change the phase inversion system of capacity thus, but the cost of employed electric loop control gear of this mode and component is higher, improved the manufacture cost of product thus, improved the unit price of product, reduced competitiveness of product and bring.

Summary of the invention

In order to solve the above problems, the objective of the invention is to do the motion that rotates in the inside of cylinder at orbiting vane, on the interior outside of described orbiting vane, form in the rotating blade compressor of pressing chamber thus, just simply utilize valve, have only the inboard compact model conversion that pressing chamber compresses or the interior outside is all compressed with regard to reaching, change the capacity of compressor thus.

And another object of the present invention is to utilize under the motion that rotates of orbiting vane, and the constant pressure gas pressure of back by the outside delivery outlet output of cylinder that contract that contract of side pressure outside is used for the action of control valve.

In order to achieve the above object, the technical solution used in the present invention provides a kind of capacity varying device of rotating blade compressor, include the press part and the drive portion of compressor, in press part, there is the circular blade of orbiting vane in the annular space of the cylinder internal that possesses suction port and interior outside delivery outlet, to do the motion that rotates, form pressing chamber in the interior outside of circular blade thus, and described circular blade comprises the linear slide block of doing straight reciprocating motion along cylinder sliding guidance face, wherein: on the sliding contact surface of linear slide block one side of described compressor compresses portion, cut-out portion with the centre is the center, is symmetrically arranged with a pair of side direction through slot on both sides; Advance under the relative inboard that is arranged on described cylinder is provided with driving at described drive portion with described linear slide block or retreat, and the slide-valve of contact and open cut-out portion.

Described slide-valve is to form contact and open valve body for linear slide block, is connected with solenoid at the rear of valve body, is provided with spring below valve body, advances or retreats at the control lower valve body of described solenoid and spring force.

Described valve body is provided with the switch gear that makes delivery pressure or suction pressure optionally act on this valve body.

Described switch gear is provided with the pusher of the supply pressure passageway that comprises the suction pressure passageway that communicates with suction port and outside delivery outlet and output pressure passageway and communicate with the chamber of valve body between described passage, sucking the piston that is provided with on-off action on pressure passageway and the output pressure passageway, slide on left and right directions under the effect of described solenoid and output pressure in the inside that makes pusher.

Effect of the present invention by above explanation as can be known, the present invention at orbiting vane in the cylinder internal moving, on the interior outside of orbiting vane, form in the spiral blade compressor of pressing chamber thus, just utilize simple valve operation only just can realize the compact model conversion of contracting or all compressing at inside and outside side pressing chamber at the inboard compression constant pressure, can change the capacity of compressor thus, thereby not only can guarantee the compressor its usage economy, and the phenomenon that shortens of the power wastage can prevent the compressor ON/OFF time and relevant device and part life, have the quality that improves machine and the effect of reliability.

Description of drawings

Fig. 1 is the general integrally-built longitudinal sectional drawing of rotating blade compressor;

Fig. 2 is the exploded perspective view of Fig. 1 press part;

Fig. 3 is the movement state diagram of the compression process of Fig. 2;

Fig. 4 a is the contract horizontal sectional drawing of state of the structure of the embodiment of the invention and inside and outside side pressure;

Fig. 4 b is the structure of the embodiment of the invention and the horizontal sectional drawing of outside connected state;

Fig. 5 a is the stereogram of the structure of major component linear slide block of the present invention;

Fig. 5 b is the stereogram of major component valve body structure of the present invention;

Fig. 6 a is the contract horizontal sectional drawing of state of the structure of another embodiment of the present invention and inside and outside side pressure;

Fig. 6 b is the structure of another embodiment of the present invention and the horizontal sectional drawing of outside connected state.

Among the figure:

54: linear slide block 54a: sliding contact surface

54b: sliding guidance face 120: slide-valve

121: chamber 122: convex portion

123: solenoid 124: spring

125: valve body 126: relative convex portion

130: switch gear 131: pusher

132: suck pressure passageway 133: the output pressure passageway

134: supply pressure passageway 135: piston

135a: open and close groove 136: connecting tube

Embodiment

Below, describe formation of the present invention in conjunction with the accompanying drawings and embodiments in detail.

Fig. 4 a, Fig. 4 b represent the structure and the operating state of the embodiment of the invention, and wherein, Fig. 4 a is the contract horizontal sectional drawing of state of the inside and outside side pressure of expression.

As shown in the figure, among the present invention, on the sliding guidance face 54b of the cylinder 4 that forms straight line form parallel to each other, possessed the linear slide block 54 of circular blade 51, and possessed slide-valve 120 in cylinder 4 inboards relative with the outside sliding contact surface of described linear slide block 54.

Described linear slide block 54 is shown in Fig. 5 a, approximately form the right angle hexahedron structure on the whole, on the sliding contact surface corresponding with the sliding guidance face of cylinder, be formed centrally symmetrical a pair of side direction through slot 110 in the 110b of cut-out portion of centre being, 110a, and described side direction through slot 110,110a forms the yi word pattern structure in about intermediate portion of sliding contact surface 54a.

And under the effect of the drive portion of described slide-valve 120, valve body 125 advances or retreats to linear slide block 54 sides, forms contact and open for linear slide block 54 thus, has possessed the chamber 121 that described valve body 125 can move in the inboard of cylinder 4.

At this moment, described chamber 121 is provided with symmetrical convex structure in order to limit the actuating range of described valve body 125 in both sides, and described valve body 125 has possessed the relative convex portion 126 corresponding with the convex portion 122 in chamber 121 equally shown in Fig. 5 b.

And, be provided with the spring 124 that recuperability is provided to described valve body 125 between the relative convex portion 126 of the convex portion 122 in described chamber 121 and valve body 125, and the rear of valve body 125 is connected with volute 123, utilize the elastic force of volute 123 and spring 124 thus, described valve body 125 is advanced or retreat.

As above the present invention of Gou Chenging is under the action of volute 123, shown in Fig. 4 a and Fig. 4 b, make valve body 125 contact linear slide blocks 54 or make the inside and outside side pressing chamber A2 of its open formation thus, pattern that B2 all compresses 1 and the pattern of just compressing 2 at inboard compression chamber A2, thus be free to the capacity of conversion compressor.

Specify as can be known, shown in Fig. 4 a, after volute 123 begins action, valve body 125 has overcome the elastic force of spring 124, contact with the 110b of cut-out portion of linear slide block 54, between the suction port 43 and outside delivery outlet 44a of sealing cylinder 4, make thus and form sealing between the suction port 43 of cylinder 4 and the outside delivery outlet 44a, thereby at inside and outside side pressing chamber A2, B2 compresses.

But, shown in Fig. 4 b, when stopping volute 123, will remove for the pressure of the volute 123 of valve body 125, compressed thus spring 124 begins elongation, elastic force is provided for valve body 125.

Thus, open between described linear slide block 54 and the valve body 125, thereby by described linear slide block 54 side direction through slots 110, become connected state between the cylinder suction port 43 of 110a and the outside delivery outlet 44a, thereby can't compress for outside pressing chamber B2, just inboard compression chamber A2 compresses.

Fig. 6 a, Fig. 6 b represent the composition and the operating state of another embodiment of the present invention, and wherein, Fig. 6 a is the contract horizontal sectional drawing of state of inside and outside side pressure.

This embodiment's major character is can act on the valve body 125 by the delivery pressure of the gas of the outside delivery outlet 44a output of cylinder 4, described for this reason slide-valve 120 has possessed switch gear 130, optionally applies delivery pressure or suction pressure for valve body 125 thus.

Described switch gear 130 has possessed the pusher 131 of the supply pressure passageway 134 that comprises the suction pressure passageway 132 that communicates with the suction port 43 and the outside delivery outlet 44a of cylinder 4 and output pressure passageway 133 and communicate with the chamber 121 of valve body 125 between described passage.

And, possessed substantially horizontal slip to the left and right under the action of delivery pressure and volute 123 in the inside of described pusher 131, for sucking pressure passageway 132 and exporting the piston 135 that pressure passageway 133 carries out on-off action, and described piston 135 comprises switching groove 135a, and for delivery pressure is acted on the described pusher 131,133 top sets have gone out to be connected on the pusher 131 connecting tube 136 from the output pressure passageway.

As above the present invention of Gou Chenging is shown in Fig. 6 a, the output of outside delivery outlet 44a is pressed by on the piston 135 that always acts on pusher 131 inside connecting tube 136, piston 135 is positioned at the position of open described pressure passageway 133 thus, promptly on the position that is interconnected by described output pressure passageway of the switching groove 135a of described piston 135 133 and supply pressure passageway 134, thereby output is pressed by output pressure passageway 133 and supply pressure passageway 134 and is acted on the valve body 125, described thus valve body 125 advances, keep and linear slide block 54 state of contact, form sealing thus between cylinder suction port 43 and the outside delivery outlet 44a, described inside and outside side pressing chamber A2, B2 compresses.

Under this state, shown in Fig. 6 b, when the volute 123 of pusher 131 starts, under the effect of the pressure driving force of volute 123, the piston 135 of pusher 131 inside is positioned at the position of sealing output pressure passageway 133, promptly being positioned at described suction pressure passageway 132 and supply presses 134 passages to cut off for the switching groove 135a by piston 135 is interconnected on the position of output pressure passageway 133, output is pressed and can not acted on the valve body 125 thus, therefore valve body 125 retreats under the effect of the elastic force of spring 124, form opened state with linear slide block 54, be interconnected between the suction port 43 of cylinder 4 and the outside delivery outlet 44a thus, outside pressing chamber B2 does not compress and has only inboard compression chamber A2 to compress.

And, utilize under the moving of orbiting vane among the present invention, be compressed the pressure-activated valve of back at the outside of cylinder internal pressing chamber by the gas of the outside delivery outlet output of cylinder, thus when inside and outside side pressing chamber compresses all, utilize the pressure of existing component and device to continue to have sealed between delivery outlet and the outside delivery outlet, thereby can reduce the lost of life and the power loss of described component and device.

Claims (4)

1, a kind of capacity varying device of rotating blade compressor, include the press part and the drive portion of compressor, in press part, there is the circular blade of orbiting vane in the annular space of the cylinder internal that possesses suction port and interior outside delivery outlet, to do the motion that rotates, form pressing chamber in the interior outside of circular blade thus, and described circular blade comprises the linear slide block of doing straight reciprocating motion along cylinder sliding guidance face, it is characterized in that:

On the sliding contact surface of linear slide block one side of described compressor compresses portion, be the center with the cut-out portion of centre, on both sides, be symmetrically arranged with a pair of side direction through slot; Advance under the relative inboard that is arranged on described cylinder is provided with driving at described drive portion with described linear slide block or retreat, and the slide-valve of contact and open cut-out portion.

2, the capacity varying device of rotating blade compressor according to claim 1, it is characterized in that: described slide-valve is to form contact and open valve body for linear slide block, rear at valve body is connected with solenoid, below valve body, be provided with spring, advance or retreat at the control lower valve body of described solenoid and spring force.

3, the capacity varying device of rotating blade compressor according to claim 2 is characterized in that: described valve body is provided with the switch gear that makes delivery pressure or suction pressure optionally act on this valve body.

4, the capacity varying device of rotating blade compressor according to claim 3, it is characterized in that: described switch gear is provided with the pusher of the supply pressure passageway that comprises the suction pressure passageway that communicates with suction port and outside delivery outlet and output pressure passageway and communicate with the chamber of valve body between described passage, sucking the piston that is provided with on-off action on pressure passageway and the output pressure passageway, slide on left and right directions under the effect of described solenoid and output pressure in the inside that makes pusher.

Images