CN202391734U - Single-cylinder double-sliding vane type rotary compressor - Google Patents
Single-cylinder double-sliding vane type rotary compressor Download PDFInfo
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- CN202391734U CN202391734U CN2011204579778U CN201120457977U CN202391734U CN 202391734 U CN202391734 U CN 202391734U CN 2011204579778 U CN2011204579778 U CN 2011204579778U CN 201120457977 U CN201120457977 U CN 201120457977U CN 202391734 U CN202391734 U CN 202391734U
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Abstract
A single-cylinder double-sliding vane type rotary compressor comprises a motor component and a compression component which are arranged in a housing, wherein the compression component comprises an air cylinder, a main bearing and an auxiliary bearing; the main bearing and the auxiliary bearing are used for supporting an eccentric crankshaft; a piston, a first sliding vane and a second sliding vane are arranged in the air cylinder; the front end of the first sliding vane and that of the second slip are connected with the circumference of the piston respectively; a first exhaust opening, a second exhaust opening, a first sliding vane cavity for accommodating the first sliding vane, and a second sliding vane cavity for accommodating the second sliding vane are formed in the air cylinder; the first exhaust opening is formed near the first sliding vane; the second exhaust opening is formed near the second sliding vane; two air suction holes, namely a first air suction hole and a second air suction hole, are formed in the air cylinder; the first air suction hole is formed near the first sliding vane; and the second air suction hole is formed near the second sliding vane. The rotary compressor has the advantages that the structure is simple and reasonable; the torque fluctuation is low; the load on the bearings is small; noise and vibration are reduced efficiently; the energy saving effect is obvious; and the comfort degree is high.
Description
Technical field
The utility model relates to a kind of rotary compressor, the two sliding vane type rotary compressors of particularly a kind of single cylinder.
Background technique
In recent years, controlling the air-conditioning ability through converter technique change rotating speed of motor is popularized with the method for improving energy efficiency.But the method has increased the quantity of electronic component, brings integrity problem, and the shortcoming of cost up.
Common twin-tub variable capacity rotation compressor is to realize transfiguration through the working state of controlling any cylinder.In this twin-tub variable capacity rotation compressor, work simultaneously when two cylinders, carry out compression, be the ability pattern; The compression of interrupting in wherein any cylinder reduces compression work, is the capabilities pattern.Yet this twin-tub variable capacity rotation compressor is compared with the single cylinder rotary compressor, has the many and high shortcoming of fabricating cost of number of components and parts; And, owing to increased by a cover compression assembly, increased friction pair, make frictional loss increase.
Disclose a kind of pair of sliding vane type rotary compressor in recent years, had only an intakeport, the slide plate that is adjacent to this intakeport is first slide plate, and another is second slide plate.When having only the work of first slide plate is high discharge capacity pattern, has the problem that leakage way is many, clearance volume increases this moment., first slide plate and second slide plate be low discharge capacity pattern when working simultaneously, because these two slide plates all join with piston, so increased the frictional loss of one group of slide plate and piston, slide plate and vane slot, wasted work increase.
The model utility content
The purpose of the utility model aim to provide a kind of simple and reasonable, torque ripple is little, bearing load is little, effectively reduce noise and the vibration of compressor, the two sliding vane type rotary compressors of single cylinder that energy-saving effect is obvious, travelling comfort is good, to overcome deficiency of the prior art.
By the two sliding vane type rotary compressors of a kind of single cylinder of this purpose design; Comprise the electric machine assembly and the compression assembly that are arranged in the housing, compression assembly comprises cylinder, supports the main bearing and the supplementary bearing of eccentric crankshaft, is provided with piston, first slide plate and second slide plate in the cylinder; The tip of the tip of first slide plate and second slide plate joins with the periphery of piston respectively; The second slide plate chamber that cylinder is provided with first relief opening and second relief opening, takes in the first slide plate chamber of first slide plate, takes in second slide plate, first relief opening is near first slide plate, and second relief opening is near second slide plate; Its structure characteristic is to be provided with two intakepories in the cylinder: first intakeport and second intakeport; Wherein, first intakeport is near first slide plate, and second intakeport is near second slide plate.
Angle between the center line of the center line of said first intakeport and second intakeport is in 90 °～270 ° scopes.
Said first intakeport and second intakeport are arranged on upper-end surface, lower end surface or the radial direction of cylinder.
Angle between said first slide plate and second slide plate is in 90 °～270 ° scopes.
Angle between the center line of the center line of said first relief opening and second relief opening is in 90 °～270 ° scopes.
The two sliding vane type rotary compressors of said single cylinder also comprise the pressure switching mechanism that can between high side pressure and low-pressure lateral pressure, switch the pressure in the second slide plate chamber.
Said first intakeport communicates with an end of sucking pipe through one-way valve, and second intakeport communicates with an end of bypass tube through bidirectional control valve, and the other end of sucking pipe communicates with the other end of bypass tube.
Said lower part of frame is provided with additional housing; Be somebody's turn to do additional housing and housing and surround silencer space jointly; The other end of sucking pipe and the other end of bypass tube stretch into respectively in the silencer space and with silencer space and communicate; One end of sucking pipe pass behind the supplementary bearing with the lower end surface that is positioned at cylinder on first intakeport communicate, an end of bypass tube pass behind the supplementary bearing with the lower end surface that is positioned at cylinder on second intakeport.
Said silencer space communicates with liquid-storage container through leading pipe.
The utility model is different with the working principle of the two sliding vane type rotary compressors of existing single cylinder, the utlity model has two intakepories, and high discharge capacity pattern is based on the working principle of double-action rotary compressor; Two slide plates are worked simultaneously; Three active chambers in the cylinder are worked simultaneously, when eccentric crankshaft rotates a circle, and twice of cylinder exhaust; Have all smaller characteristics of torque ripple and bearing load, can effectively reduce the noise and the vibration of compressor.
The utility model is operated in when hanging down the discharge capacity pattern, has only the first slide plate work, so adopt the method for air-breathing bypass; Can reach the rational available gas decrement of control,, reduce motor load and reduce power consumption so that keep suitable ambient temperature; Reduce compressor start-stop number of times simultaneously; The adjusting temperature is relatively stable, and energy-saving effect is obvious, and travelling comfort is good.
Silencer space in the utility model has the function of similar liquid-storage container, thereby can cancel liquid-storage container, thereby reduces fabricating cost and reduce volume.
The utility model is compared with existing twin-tub variable volume compressor, has the advantage that volume is little, component are few and cost is low in structure aspects.Compare with the two sliding vane type rotary compressors of existing single cylinder, it is big to have a high discharge capacity pattern refrigerating capacity, the low high advantage of discharge capacity pattern efficiency.
The utlity model has simple and reasonable, torque ripple is little, bearing load is little, effectively reduce noise and the vibration of compressor, the characteristics that energy-saving effect is obvious, travelling comfort is good.
Description of drawings
Fig. 1 is the utility model first embodiment's a broken section structural representation.
Fig. 2 is the structural representation of first embodiment when being operated in high discharge capacity pattern.
The process chart that Fig. 3-Fig. 6 is first embodiment when high discharge capacity pattern.
Fig. 7 is that first embodiment is operated in the structural representation when hanging down the discharge capacity pattern.
Fig. 8-Figure 11 is the process chart of first embodiment when hanging down the discharge capacity pattern.
Figure 12 is the schematic representation that the intakeport among first embodiment is positioned at the cylinder upper-end surface.
Figure 13 is second embodiment's a broken section structural representation.
Figure 14 is the 3rd embodiment's a broken section structural representation.
Figure 15 is the broken section structural representation after the 3rd embodiment cancels liquid-storage container.
Figure 16 is the performance plot of the 4th embodiment's compressor.
Figure 17 is the 5th embodiment's a schematic representation.
Among the figure: 1 is the two sliding vane type rotary compressors of single cylinder, and 2 is outlet pipe, and 3 is outdoor heat exchanger, and 4 is throttling arrangement, and 5 is indoor heat exchanger, and 6 is liquid-storage container; 7.1 be sucking pipe, 7.2 is bypass tube, 7.3 is leading pipe, and 8 is four-way switching valve, and 9 is housing, and 10 are additional housing; 11 is cylinder, and 12 is piston, and 13 is slide plate, and 13.1 is first slide plate, and 13.2 is second slide plate, and 14 is outlet valve; 14.1 be first outlet valve, 14.2 is second outlet valve, 15 is intakeport, and 15.1 is first intakeport, and 15.2 is second intakeport, and 16 are the exhaust otch; 16.1 be the first exhaust otch, 16.2 is the second exhaust otch, 17 is the slide plate chamber, and 17.1 is the first slide plate chamber, and 17.2 is the second slide plate chamber, and 18 is sliding blade spring; 19.1 be one-way valve, 19.2 is bidirectional control valve, 21 is eccentric crankshaft, and 22 is main bearing, and 23 is supplementary bearing; 24 is electric machine assembly, and 24.1 is rotor, and 24.2 is motor stator, and 25 is baffler, and 26 is that three-way valve is used in control; 27 for pressure switches pipe, and 31.1 is air aspiration cavity, and 31.2 is compression chamber, and 31.3 is intermediate cavity, and 32 is silencer space.40 is first bonding point.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
First embodiment
Referring to Fig. 1, be the cross section structure of the two sliding vane type rotary compressors 1 of expression single cylinder and the figure of the refrigeration cycle structure of the refrigerating circulatory device that comprises the two sliding vane type rotary compressors 1 of this single cylinder.Followingly slightly call compressor 1 to the two sliding vane type rotary compressors 1 of single cylinder.
At first begin explanation from compressor 1, in housing 9, be provided with electric machine assembly and compression assembly, compression assembly comprises cylinder 11, eccentric crankshaft 21, main bearing 22, supplementary bearing 23, first outlet valve 14.1 and second outlet valve 14.2, baffler 25 etc.Be provided with piston 12, first slide plate 13.1 and second slide plate 13.2, first intakeport 15.1 and second intakeport 15.2, first relief opening 16.1 and second relief opening 16.2 and sliding blade spring 18 in the cylinder 11.Wherein, Main bearing 22 is used to support eccentric crankshaft 21 with supplementary bearing 23; The tip of the tip of first slide plate 13.1 and second slide plate 13.2 joins with the periphery of piston 12 respectively, and the first slide plate chamber 17.1 is used to take in first slide plate, 13.1, the second slide plate chambeies 17.2 and is used to take in second slide plate 13.2.Cylinder 11 is provided with first relief opening 16.1 and second relief opening 16.2; First relief opening 16.1 is near first slide plate 13.1; Second relief opening 16.2 is provided with two intakepories near second slide plate 13.2 in the cylinder 11: first intakeport 15.1 and second intakeport 15.2, wherein; First intakeport 15.1 near first slide plate, 13.1, the second intakepories 15.2 near second slide plate 13.2.
In order to control the working state of second slide plate 13.2, the two sliding vane type rotary compressors of single cylinder also comprise the pressure switching mechanism that can between high side pressure and low-pressure lateral pressure, switch the pressure in the second slide plate chamber 17.2.
The pressure switching mechanism switches the pressure in the second slide plate chamber 17.2 for controlling with three-way valve 26 between high side pressure and low-pressure lateral pressure; Perhaps, the pressure switching mechanism adopts four-way switching valve 8 and the connecting pipeline in the cooling and heating two-purpose air conditioner system.About this part content, below with describing respectively.
In the present embodiment, the pressure switching mechanism is that the control that is equipped with in the outside of compressor 1 is with three-way valve 26.Compressor 1, outdoor heat exchanger 3, throttling arrangement 4 and indoor heat exchanger 5 have constituted freeze cycle.
Combine Fig. 1-Figure 10 that this freeze cycle is described at present.
Referring to Fig. 2 and Fig. 7, in compressor 1, the component configuration and the contraction principle that constitute compression mechanical part have been shown.The piston 12 that cylinder 11 is inner is slidingly matched with the eccentric part of eccentric crankshaft 21, along the internal diameter of cylinder, along eccentric revolution counterclockwise.
At cylinder 11 peripheral parts, the axle center of facing cylinder 11 disposes two slide plates: first slide plate 13.1 and second slide plate 13.2.Angle between two slide plates is θ, and the span of θ is between 90 °～270 °, and when θ chose 180 °, the technique effect that brings was relatively good.
Therefore on first slide plate 13.1 sliding blade spring 18 is installed, receives under the effect of spring force and gas difference force of sliding blade spring 18, first slide plate, 13.1 tips can join with the periphery of piston 12.
Among Fig. 2, with three-way valve 26 controls and 9 interior connections of housing, pressure is high side pressure Pd via control in the second slide plate chamber 17.2, and under the effect of difference force, the tip of second slide plate 13.2 can join with the periphery of piston 12, and two slide plates are worked simultaneously.This moment, compressor 1 was high discharge capacity pattern.
Like Fig. 3-shown in Figure 6, two working rooms about first slide plate 13.1 and second slide plate 13.2 are divided into the inner chamber of cylinder 11, the both sides of each slide plate all have intakeport and exhaust otch.Point of contact between piston 12 and the cylinder 11 belongs to working room's separated into two parts with it: a part that only communicates with intakeport is called air aspiration cavity 31.1, and the part that communicates with the exhaust otch is called compression chamber 31.2.Meanwhile, another complete working room is called intermediate cavity 31.3.When piston 12 was justified rolling in cylinder 11, air aspiration cavity 31.1, intermediate cavity 31.3 and compression chamber 31.2 alternately occurred in two working rooms, and its volume cycle changes, thereby had accomplished the whole work cycle of compressor 1.To each active chamber, eccentric crankshaft 21 turns around and partly just accomplishes a complete work cycle, and concerning whole compressor 1, three active chambers are worked simultaneously, eccentric crankshaft 21 twice of the exhaust of whenever turning around.
In the present embodiment, electric machine assembly is a variable-frequency motor, in any rotating speed below 60rps, and can be from high discharge capacity mode switching to float amount pattern.Through the switching of two kinds of patterns, can between two kinds of discharge capacities, switch the discharge capacity of above-mentioned cylinder 11.These two kinds of patterns are: the operation mode that 1) is 13.1 actions of first slide plate---low discharge capacity pattern; 2) first slide plate 13.1 and second slide plate 13.2 operation mode---the high discharge capacity pattern of moving simultaneously.
Working principle and the mobile of cold media air when combining Fig. 2-Fig. 6 to high discharge capacity pattern describe at present.
Piston 12 appears at the working room, left side with the point of contact of cylinder 11, and air aspiration cavity 31.1 appears at the working room, left side with compression chamber 31.2.Before piston 12 turned over first intakeport 15.1, low-pressure gas was inhaled into working room, cylinder 11 left side from sucking pipe 7.1 through intakeport 15.1.After piston 12 turns over first intakeport 15.1, air-breathing end, the low-pressure gas in the compression chamber 31.2 begins compression, becomes pressurized gas, when reaching certain pressure, via second outlet valve 14.2, is discharged into baffler 25 from second relief opening 16.2.Before piston 12 turned over second slide plate 13.2, the working room, right side was an intermediate cavity 31.3, was communicated with second intakeport 15.2 always, was low voltage side.
When piston 12 turns over moment of second slide plate 13.2, compression chamber 31.2 exhausts in left side finish.Along with the working room, right side is dropped at the piston 12 and the point of contact of cylinder 11, air aspiration cavity 31.1 and compression chamber 31.2 appear in the right side, and the working room, left side is an intermediate cavity 31.3.At this moment, low-pressure gas is inhaled into working room, cylinder 11 right side from bypass tube 7.2 through intakeport 15.2.Piston 12 turns over second intakeport 15.2, and air-breathing end begins compression, becomes pressurized gas, when reaching certain pressure, via first outlet valve 14.1, is discharged into baffler 25 from first relief opening 16.1.
Pressurized gas through baffler 25 discharges; Flow out to the space between compression assembly and the electric machine assembly, discharge from outlet pipe 2 through the gap of electric machine assembly, from outdoor heat exchanger 3, via throttling arrangement 4; In indoor heat exchanger 5, become low-pressure gas; Via liquid-storage container 6,, be inhaled in the cylinder 11 through first intakeport 15.1 and second intakeport 15.2 respectively from sucking pipe 7.1, bypass tube 7.2.
Therefore; When high discharge capacity pattern, when the depressed bundle of a side draught began to compress, then the opposite side exhaust finished and begins air-breathing; This working principle makes its torque ripple and bearing load in compression process littler than common single cylinder rotary compressor, thereby vibration of compressor is reduced about half.
Among Fig. 7; The second slide plate chamber 17.2 is communicated with sucking pipe 7.1, liquid-storage container 6 with three-way valve 26 controls via control; Pressure is low-pressure lateral pressure Ps, and under the effect of difference force, second slide plate 13.2 is accommodated in the second slide plate chamber 17.2; Can not join with the periphery of piston 12, have only 13.1 work of first slide plate.This moment, compressor 1 was low discharge capacity pattern.
Working principle and the mobile of cold media air when combining Fig. 7-Figure 11 to low discharge capacity pattern describe at present.
Before piston 12 turned over first intakeport 15.1, low-pressure gas was inhaled in the cylinder 11 through first intakeport 15.1 and second intakeport 15.2 respectively from sucking pipe 7.1, bypass tube 7.2.After piston 12 turns over first intakeport 15.1,, be low voltage side because compression chamber 31.2 still is communicated with second intakeport 15.2.Have only after piston 12 turns over second intakeport 15.2, compression chamber 31.2 breaks away from second intakeport 15.2, begins compression; Become pressurized gas, reach certain pressure after, from first relief opening 16.1 via first outlet valve 14.1; Be discharged into baffler 25, flow out to the space between compression assembly and the electric machine assembly then, discharge from outlet pipe 2 through the gap of electric machine assembly; From outdoor heat exchanger 3, via throttling arrangement 4; In indoor heat exchanger 5, become low-pressure gas,, be inhaled in the cylinder 11 through first intakeport 15.1 and second intakeport 15.2 respectively from sucking pipe 7.1, bypass tube 7.2 via liquid-storage container 6.
When low discharge capacity pattern, have only after piston 12 turns over second intakeport 15.2, just begin compression, so effectively the pressurized gas scale of construction is able to reduce, thereby reduces motor load and reduce power consumption.
In Fig. 2 and Fig. 7, along the sense of rotation of eccentric crankshaft 21, the angle between first slide plate 13.1 and second slide plate 13.2 is θ, 90 °≤θ≤270 °, is set to 180 ° among the figure.Angle between the center line of the center line of first relief opening 16.1 and second relief opening 16.2 is α, 90 °≤α≤270 °, is set to 180 ° among the figure.Angle between the center line of the center line of first intakeport 15.1 and second intakeport 15.2 is β, 90 °≤β≤270 °, is set to 180 ° among the figure.A little bit smaller θ, α, β design can increase the refrigerating capacity of low discharge capacity pattern.
In Fig. 2 and Fig. 7, first intakeport 15.1 and second intakeport 15.2 are the radial direction setting in cylinder 11, certainly, also can be arranged on the upper-end surface or lower end surface of cylinder 11, and be shown in figure 12.
Second embodiment
In first embodiment; Compressor 1 with Fig. 2 is example (angle between two slide plates is 180 °); When high discharge capacity pattern; The maximum inhale volume appears at the vertical position that piston 12 and the point of contact of cylinder 11 are in two slide plate center lines, is Fig. 4 and position shown in Figure 6, and this moment, the intermediate cavity volume was maximum and communicate with intakeport.From the point of contact of the maximum until piston 12 of working chamber volume and cylinder 11 with its with the intakeport partition before, the gas that has sucked in the active chamber will partly flow backwards in air intake passage.
Shown in figure 13, the compressor 1 in the present embodiment has been made optimal design: be provided with between first intakeport 15.1 and the sucking pipe 7.1 between one-way valve 19.1, the second intakepories 15.2 and the bypass tube 7.2 and be provided with bidirectional control valve 19.2.That is to say that first intakeport 15.1 communicates with an end of sucking pipe 7.1 through one-way valve 19.1, second intakeport 15.2 communicates with an end of bypass tube 7.2 through bidirectional control valve 19.2, and the other end of sucking pipe 7.1 communicates with the other end of bypass tube 7.2.
When high discharge capacity pattern, the gas that guarantee to have sucked in the intermediate cavity can be respectively through first intakeport 15.1, second intakeport 15.2, flow backwards to sucking pipe 7.1 and bypass tube 7.2.During low discharge capacity pattern, guarantee from sucking pipe 7.1 flow through first intakeport 15.1, from second intakeport 15.2 bypass tube 7.2 smooth and easy the getting final product of flowing through.
Because when hanging down the discharge capacity pattern; The pressure at first intakeport, 15.1 places is in low pressure always; And a little less than the pressure of sucking pipe 7.1, so design one-way valve 19.1 between first intakeport 15.1 and the sucking pipe 7.1 guarantees that gas gets final product without first intakeport, 15.1 water conservancy diversion resorption tracheaes 7.1.
But when hanging down the discharge capacity pattern, second intakeport, 15.2 pressure ratio bypass tubes 7.2 are slightly high in the real-world operation.If be one-way valve only here according to high discharge capacity pattern valve design 19.2, can only guarantee that high discharge capacity pattern does not reflux, then owing to the existence of valve 19.2, gas can't get into bypass tubes 7.2 through second intakeport 15.2 when hanging down the discharge capacity pattern.So the valve 19.2 between second intakeport 15.2 and the bypass tube 7.2 is provided with bidirectional control valve, guarantee that high discharge capacity pattern does not reflux, the low smooth and easy conducting of discharge capacity pattern.
Owing to increased one-way valve 19.1 and bidirectional control valve 19.2, do not reflux during high discharge capacity pattern, compressor 1 actual displacement effectively improves refrigerating capacity than the high about 50%-60% of first embodiment.
All the other are not stated part and see first embodiment, no longer repeat.
The 3rd embodiment
If the compressor 1 among first embodiment or second embodiment is not provided with one-way valve 19.1 or bidirectional control valve 19.2; When high discharge capacity pattern; Can there be pressure surge from intermediate cavity 31.3 gas that refluxes and the gas that comes out from liquid-storage container 6, often causes the inspiratory airflow noise.
In order to solve this problem, housing 9 bottoms of the compressor 1 in the present embodiment are welded with additional housing 10, and are shown in figure 14.
Should surround silencer space 32 jointly with housing 9 by additional housing 10; The other end of the other end of sucking pipe 7.1 and bypass tube 7.2 stretches into respectively in the silencer space 32 and with silencer space 32 and communicates; One end of sucking pipe 7.1 passes supplementary bearing 23 back and communicates with first intakeport 15.1 on the lower end surface that is positioned at cylinder 11; One end of bypass tube 7.2 passes second intakeport 15.2 on supplementary bearing 23 back and the lower end surface that is positioned at cylinder 11, and silencer space 32 communicates with liquid-storage container 6 through leading pipe 7.3.One-way valve or bidirectional control valve are not set here.
When high discharge capacity pattern, compressor 1 is for the work of double action rotary compressor, and according to its suction, contraction principle, the refrigerant gas that in suction stroke, sucks is come in and gone out in sucking pipe 7.1, bypass tube 7.2.Illustrate in conjunction with Figure 12, first intakeport 15.1 is communicated with intermediate cavity, and this moment, the volume of intermediate cavity 31.3 was maximum.Along with piston 12 is rotated further, the volume of intermediate cavity 31.3 will reduce, owing to there is not one-way valve 19.1; Refrigerant gas is through first intakeport 15.1; The sucking pipe 7.1 of flowing through gets into silencer space 32, gets into air aspiration cavitys through bypass tube 7.2 second intakeport 15.2 of flowing through then.Because reflux gas obtains buffering in silencer space 32, the gas of therefore having avoided breathing process to produce.
And through optimal design, silencer space 32 can play the function of similar liquid-storage container 6, thereby can cancel liquid-storage container 6, and is shown in figure 15, saves cost greatly.
All the other are not stated part and see second embodiment, no longer repeat.
The 4th embodiment
Change to the variable-frequency motor assembly to the electric machine assembly of first embodiment, second embodiment or the 3rd embodiment's compressor 1, after control of combination discharge capacity and the rotating speed control, can enlarge first embodiment or the disclosed The Application of Technology of second embodiment.The 3rd embodiment is relevant with the two sliding vane frequency conversion rotary compressors that form through these combinations.
Figure 16 has shown the rotating speed of this pair sliding vane frequency conversion rotary compressor and the relation of cold relation, rotating speed and electric efficiency.In general, the electric efficiency of frequency-changeable compressor is the highest about 60rps, and above behind the 90rps, efficient sharply descends; Rotating speed begins to descend less than 40rps efficient, seriously descends to 20rps efficient from 30rps.Common single cylinder frequency conversion rotary compressor is from beginning below the 30rps, and vibration increases rapidly, and compressor efficiency seriously descends, so adopt 30rps to be lower limit when generally using.
Two sliding vane frequency conversion rotary compressors of present embodiment can be selected high discharge capacity pattern or low discharge capacity mode operation, thereby can obtain two kinds of colds under some rotating speeds, shown in figure 16.The discharge capacity of supposing low discharge capacity pattern is 50% of a high discharge capacity pattern.During 120rps, high discharge capacity pattern cold is 10KW so, and low discharge capacity pattern cold is 5KW.Cold can only be selected high discharge capacity pattern during greater than 5KW.Cold is when 2.5KW-5KW scope, according to selecting one of them pattern to get final product in the cold characteristic.When 2.5KW, select high discharge capacity pattern, then compressor rotary speed is 30rps, but electric efficiency is lower; Select low discharge capacity pattern, compressor rotary speed is 60rps, and electric efficiency is the highest, more power saving.Especially at 30rps, low discharge capacity pattern can obtain high discharge capacity pattern the 1.25KW that can not obtain.Therefore compare with single cylinder frequency conversion rotary compressor, two sliding vane frequency conversion rotary compressors can effectively improve compressor efficiency, improve travelling comfort, widen the range of choice in little cold field, obtain littler cold amplitude.
All the other are not stated part and see the 3rd embodiment, no longer repeat.
The 5th embodiment
Carry first embodiment or second embodiment's compressor 1 application example of the dual-purpose air conditioner of cooling and heating.In Figure 17, four-way switching valve 8 and connecting pipeline in the pressure switching mechanism employing system.The pressure at 17.2 rear portions, the second slide plate chamber of compressor 1 switches pipe 27, is connected in four-way switching valve 8 and first bonding point 40 of the pipe arrangement between the indoor heat exchanger 5 in the air conditioner.
In cooling operation, compressor 1 starting, the pressurized gas that spue from outlet pipe 2 flow into outdoor heat exchanger 3 via four-way switching valve 8 backs, through throttling arrangement 4, get into indoor heat exchanger 5, and therefore, first bonding point 40 is low-pressure lateral pressure Ps.The pressure in the second slide plate chamber 17.2 becomes low pressure Ps, and compressor 1 is low discharge capacity mode operation.But, the counter-rotating four-way switching valve 8, from cooling operation switch to heat running after, first bonding point 40 becomes high side pressure Pd.Therefore, compressor 1 is the ability mode operation.Consequently in cooling operation, the air-conditioning function is carried out the low running of ability, in heating running, the air-conditioning function carries out the big running of ability.
As stated; Refrigeration with heat on the dual-purpose air conditioner carry aforesaid compressor 1 after; Can on refrigeration system, use the four-way switching valve 8 that is provided in advance in the air conditioner; Therefore, omit the described control of preamble, can obtain to become the air conditioner that big, energy-conservation aspect has superiority as the running ability that heats of target with three-way valve 26.And, do not need special control, so have the advantage of easy practicability.
All the other are not stated part and see second embodiment, no longer repeat.
In sum, the disclosed technology of the utility model imports industry easily, and cost of production is low.High discharge capacity pattern torque ripple and bearing load are little, and noise vibration is little.Low discharge capacity pattern energy-saving effect is obvious, and travelling comfort is good.
Claims (9)
1. two sliding vane type rotary compressors of a single cylinder; Comprise the electric machine assembly and the compression assembly that are arranged in the housing (9); Compression assembly comprises cylinder (11), supports the main bearing (22) and the supplementary bearing (23) of eccentric crankshaft (21); Be provided with piston (12), first slide plate (13.1) and second slide plate (13.2) in the cylinder (11); The tip of the tip of first slide plate (13.1) and second slide plate (13.2) joins with the periphery of piston (12) respectively; The second slide plate chamber (17.2) that cylinder (11) is provided with first relief opening (16.1) and second relief opening (16.2), takes in the first slide plate chamber (17.1) of first slide plate (13.1), takes in second slide plate (13.2), first relief opening (16.1) is near first slide plate (13.1), and second relief opening (16.2) is near second slide plate (13.2); It is characterized in that being provided with in the cylinder (11) two intakepories: first intakeport (15.1) and second intakeport (15.2); Wherein, first intakeport (15.1) is near first slide plate (13.1), and second intakeport (15.2) is near second slide plate (13.2).
2. the two sliding vane type rotary compressors of single cylinder according to claim 1 is characterized in that angle between the center line of center line and second intakeport (15.2) of said first intakeport (15.1) is in 90 °～270 ° scopes.
3. the two sliding vane type rotary compressors of single cylinder according to claim 1 is characterized in that said first intakeport (15.1) and second intakeport (15.2), are arranged on upper-end surface, lower end surface or the radial direction of cylinder (11).
4. the two sliding vane type rotary compressors of single cylinder according to claim 1 is characterized in that angle between said first slide plate (13.1) and second slide plate (13.2) is in 90 °～270 ° scopes.
5. the two sliding vane type rotary compressors of single cylinder according to claim 1 is characterized in that angle between the center line of center line and second relief opening (16.2) of said first relief opening (16.1) is in 90 °～270 ° scopes.
6. the two sliding vane type rotary compressors of single cylinder according to claim 1 is characterized in that the two sliding vane type rotary compressors of said single cylinder also comprise the pressure switching mechanism that can between high side pressure and low-pressure lateral pressure, switch the pressure in the second slide plate chamber (17.2).
7. according to the two sliding vane type rotary compressors of the arbitrary described single cylinder of claim 1 to 6; It is characterized in that said first intakeport (15.1) communicates through the end of one-way valve (19.1) with sucking pipe (7.1); Second intakeport (15.2) communicates through the end of bidirectional control valve (19.2) with bypass tube (7.2), and the other end of sucking pipe (7.1) communicates with the other end of bypass tube (7.2).
8. according to the two sliding vane type rotary compressors of the arbitrary described single cylinder of claim 1 to 6; The bottom that it is characterized in that said housing (9) is provided with additional housing (10); Should surround silencer space (32) jointly with housing (9) by additional housing (10); The other end of the other end of sucking pipe (7.1) and bypass tube (7.2) stretches into respectively in the silencer space (32) and with silencer space (32) and communicates; One end of sucking pipe (7.1) passes supplementary bearing (23) back and communicates with first intakeport (15.1) on the lower end surface that is positioned at cylinder (11), and an end of bypass tube (7.2) passes supplementary bearing (23) back and is positioned at second intakeport (15.2) on the lower end surface of cylinder (11).
9. the two sliding vane type rotary compressors of single cylinder according to claim 8 is characterized in that said silencer space (32) communicates with liquid-storage container (6) through leading pipe (7.3).
Priority Applications (1)
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| CN2011204579778U CN202391734U (en) | 2011-11-17 | 2011-11-17 | Single-cylinder double-sliding vane type rotary compressor |
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| CN2011204579778U CN202391734U (en) | 2011-11-17 | 2011-11-17 | Single-cylinder double-sliding vane type rotary compressor |
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| CN202391734U true CN202391734U (en) | 2012-08-22 |
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