CN103321907B - Rotary compressor - Google Patents
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- CN103321907B CN103321907B CN201210079463.2A CN201210079463A CN103321907B CN 103321907 B CN103321907 B CN 103321907B CN 201210079463 A CN201210079463 A CN 201210079463A CN 103321907 B CN103321907 B CN 103321907B
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Abstract
nullA kind of rotary compressor，Compression mechanism and motor it is provided with in housing，Compression mechanism includes the second cylinder，Bent axle drives the second piston to do eccentric revolution in the compression chamber of the second cylinder，Second slide plate is accommodated in the second vane slot in the second cylinder，The front end of the second slide plate can abut against with the periphery of the second piston，The rear end of the second slide plate is received in the second airtight slide plate chamber being arranged on the second cylinder，Base bearing and supplementary bearing are used for supporting bent axle，Pressure switching mechanism makes the pressure in the second slide plate chamber switch between high side pressure and low-pressure lateral pressure，Also include device for controlling sliding vane，This device for controlling sliding vane includes being respectively arranged with the first compression zone and the second compression zone on two relative motion faces on the second slide plate，Wherein，The pressure of the first compression zone and the pressure in the second slide plate chamber are equal，The pressure of the second compression zone is generally equal with high side pressure.The present invention has flexible operation, it is little to lose, wear away feature low and applied widely.
Description
Technical field
The present invention relates to a kind of rotary compressor.
Background technology
In recent years, double; two cylinder type rotary compressor is used constantly to improve to the technology controlling refrigerating capacity, as an example, the pressure in the slide plate chamber of the closure in the cylinder of compressor by switching between low-pressure lateral pressure and high side pressure, and the capacity control techniques of the refrigerating capacity of adjustment compressor enjoys to be gazed at.On the relative motion side of slide plate, respective elevated pressure and low pressure, in order to utilize the pressure official post slide plate between this high pressure and low pressure to stop in vane slot, this pressure differential must be sufficiently large.If it addition, when the excessive releasing slide plate of pressure differential stops becoming again difficulty, and, the lost motion of slide plate and abrasion increase.
Patent documentation 1 Japanese documentation Unexamined Patent 1-247786
Patent documentation 2 Chinese patent literature CN1816697A
Summary of the invention
The purpose of the present invention aims to provide a kind of simple and reasonable, flexible operation, loss is little, wear away rotary compressor low, applied widely, to overcome weak point of the prior art.
nullBy a kind of rotary compressor that this purpose designs，Compression mechanism and motor it is provided with in housing，Compression mechanism includes the second cylinder，Bent axle drives the second piston to do eccentric revolution in the compression chamber of the second cylinder，Second slide plate is accommodated in the second vane slot in the second cylinder，The front end of the second slide plate can abut against with the periphery of the second piston，The rear end of the second slide plate is received in the second airtight slide plate chamber being arranged on the second cylinder，Base bearing and supplementary bearing are used for supporting bent axle，Pressure switching mechanism makes the pressure in the second slide plate chamber switch between high side pressure and low-pressure lateral pressure，Its architectural feature is also to include device for controlling sliding vane，This device for controlling sliding vane includes being respectively arranged with the first compression zone and the second compression zone on two relative motion faces on the second slide plate，Wherein，The pressure of the first compression zone and the pressure in the second slide plate chamber are equal，The pressure of the second compression zone is generally equal or approximately equal with high side pressure；Pressure switching mechanism is by being switched to low-pressure lateral pressure by the above-mentioned pressure for the second slide plate chamber of high side pressure, or by the above-mentioned pressure for the above-mentioned second slide plate chamber of low-pressure lateral pressure is switched to high side pressure, and make the action of the second slide plate stop or releasing stopping.
The first compression zone and the area of the second compression zone in described device for controlling sliding vane are of substantially equal.
Two relative motion faces of the second slide plate in described device for controlling sliding vane include the first moving surface on the side and the second moving surface, first compression zone be arranged on the first moving surface first by indent, the second compression zone be arranged on the second moving surface second by indent；First moving surface is additionally provided with the connectivity slot being connected by indent with first and to the second slide plate chamber opening, pressure hole second slide plate cell wall perforate to the second vane slot from the outside of the second cylinder, at least the second slide plate will static in the second vane slot time, pressure hole and second is connected by indent.
Described second cylinder is provided with the second inlet hole and first row pore；Wherein, first is arranged on the side of the second inlet hole by indent, and second is arranged on the side of first row pore by indent and pressure hole；Or, second is arranged on the side of the second inlet hole by indent and pressure hole, and first is arranged on the side of first row pore by indent.
Described device for controlling sliding vane include being respectively provided with in the first slide plate cell wall and the second slide plate cell wall of the second vane slot the 3rd by indent and the 4th by indent, wherein, the first compression zone is the 3rd by indent, and the second compression zone is the 4th by indent；3rd is connected the second slide plate chamber by indent by connectivity slot, and the 4th is connected by the pressure hole of indent with the bottom perforate towards the second cylinder；Wherein, connectivity slot is arranged in the first moving surface on the second slide plate, or, connectivity slot is arranged in the first slide plate cell wall.
Two relative motion faces of the second slide plate in described device for controlling sliding vane include being positioned at the 3rd upper and lower moving surface and the 4th moving surface, first compression zone be arranged on the 3rd moving surface the 5th by indent, the second compression zone be arranged on the 4th moving surface the 6th by indent.
Two relative motion faces of the second slide plate in described device for controlling sliding vane include being positioned at the 3rd upper and lower moving surface and the 4th moving surface, and two faces connected with the 3rd moving surface and the 4th moving surface in the second vane slot the 7th are subject to indent by indent and the 8th respectively.
In the twin-tub rotation-type compressor being made up of two cylinders, any one in these two cylinders comprises device for controlling sliding vane.
In the single cylinder rotary compressor being made up of single cylinder, this single cylinder comprises device for controlling sliding vane.
The present invention by being respectively provided with second by indent and first by indent on two moving surfaces being positioned at the second slide plate 82 side, respectively through pressure hole and connectivity slot UNICOM enclosure interior and the second slide plate chamber, therefore these two pressure by indent are respectively high side pressure Pd and low-pressure lateral pressure Ps.Due to the pressure differential that two areas by indent are sufficiently large, therefore just only small at last, the directed force F acting on the second slide plate is also bigger, it is easy to ground makes slide plate stop.When the pressure in the second slide plate chamber is switched to high side pressure, first is become high side pressure by the pressure of indent, therefore first by indent and second by the pressure differential vanishing between indent 91, the action releasing the second slide plate stops, and cylinder is compressed.This technical scheme will not increase lost motion and the abrasion of the second slide plate.
The present invention just can make the second slide plate static by only small pressure differential, it is also possible to releases the static of the second slide plate, in other words, even if also can control the refrigerating capacity of compressor under the operating condition that pressure differential is little.When the pressure differential in the second vane motion is zero, the power acting on the second slide plate side is zero.Therefore, will not occurring owing to the lost motion of the slide plate of pressure differential generation increases and abrasion, the control of the second slide plate also becomes to be more prone to.
The present invention has simple and reasonable, flexible operation, loss is little, wear away a low and applied widely feature.
Accompanying drawing explanation
Fig. 1 is in embodiments of the invention 1, represents the plane graph (in vane motion) of the device for controlling sliding vane of the cylinder interior being formed in rotary compressor.
Fig. 2 is in embodiment 1, the processing schematic diagram by indent on slide plate.
Fig. 3 is in embodiment 1, represents the plane graph (in slide plate stopping) of device for controlling sliding vane.
Fig. 4 is in embodiment 1, the processing details drawing by indent on slide plate.
Fig. 5 is in embodiments of the invention 2, represents the plane graph (in slide plate stopping) of the device for controlling sliding vane of the cylinder interior being formed in rotary compressor.
Fig. 6 is in embodiment 2, the details drawing of device for controlling sliding vane.
Fig. 7 is in embodiments of the invention 3, represents the longitudinal section within double-cylinder rotary compressor.
Fig. 8 is in embodiment 3, represents the longitudinal section (in vane motion) of the composition of device for controlling sliding vane.
Fig. 9 is in embodiment 3, represents the longitudinal section (in slide plate stopping) of the composition of device for controlling sliding vane.
Figure 10 is in embodiments of the invention 4, represents the longitudinal section of the inside of single cylinder rotary compressor.
nullIn figure: R is rotary compressor R，11 is housing，16 is reservoir，17 is suction nozzle，20 is three-way valve，24 is pressure switching pipe，25 is slide block，30 is compression mechanism，31 is bent axle，35 is motor，40 is base bearing，50 is supplementary bearing，51 is acoustic filter，53 is first row pore，54 is gas orifice，60 is central dividing plate，70 is the first cylinder，71 is first piston，72 is the first slide plate，80 is the second cylinder，81 is the second piston，82 is the second slide plate，83 is the second slide plate chamber，84 is the second suction hole，85 is the second compression chamber，86 is sliding blade spring，87 is spring eye，88 is the first slide plate cell wall，89 is the second slide plate cell wall，90 is first by indent，91 is second by indent，92 is pressure hole，93 is connectivity slot，101 is the 3rd by indent，102 is the 4th by indent，Pd is high pressure，Ps is low pressure，L is front end face，M is rear end face，N is front end，S is the first moving surface，T is the second moving surface，U is the 3rd moving surface，V is the 4th moving surface，F is active force.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1
Referring to Fig. 1 and Fig. 3, represent the second cylinder 80 of the compression mechanism 30 constituting rotary compressor and be arranged in the device for controlling sliding vane that second cylinder 80 internal control the second slide plate 82 stops and releasing stopping.Fig. 2 represents the detailed configuration of the second slide plate 82 being formed in the second cylinder 80.
Compression mechanism 30 and motor 35 it is provided with in the housing 11 of rotary compressor, compression mechanism 30 includes the second cylinder 80, bent axle 31 drives the second piston 81 to do eccentric revolution in the compression chamber of the second cylinder 80, second slide plate 82 is accommodated in the second vane slot in the second cylinder 80, the front end of the second slide plate 82 can abut against with the periphery of the second piston 81, the rear end of the second slide plate 82 is received in the second airtight slide plate chamber 83 being arranged on the second cylinder 80, base bearing 40 and supplementary bearing 50 are used for supporting bent axle 31, pressure switching mechanism makes the pressure in the second slide plate chamber 83 switch between high side pressure and low-pressure lateral pressure.Pressure switching mechanism is by being switched to low-pressure lateral pressure by the above-mentioned pressure for the second slide plate chamber 83 of high side pressure, or by the above-mentioned pressure for the above-mentioned second slide plate chamber 83 of low-pressure lateral pressure is switched to high side pressure, and make the action of the second slide plate 82 stop or releasing stopping.
Fig. 1 is moved by the second slide plate 82 and the second compression chamber 85 is compressed the state of work.Fig. 3 is that the second slide plate 82 stops, and the second compression chamber 85 interrupts compression work, the state of the second piston 81 idle running.
Second piston 81 is driven by bent axle 31 described later and does anticlockwise eccentric revolution along the second compression chamber 85 inwall.The upper and lower opening portion in the second slide plate chamber 83 is closed by aftermentioned two bearings and central dividing plate, and therefore the second slide plate chamber 83 is airtight.
It is connected to the pressure switching mechanism of the rear wall in the second slide plate chamber 83, namely pressure switching pipe 24, plays and is switched between the high side pressure Pd equal with the pressure at expulsion of the second compression chamber 85 and the low-pressure lateral pressure Ps equal with the gas inhalating pressure of suction nozzle 17 by the pressure in the second slide plate chamber 83.But, the pressure of on high-tension side pressure and low-pressure side, it is more than referring to the cylinder pressure of compressor, says scrupulously and be defined as in freeze cycle compressor pressure (high-pressure side) to expansion device inlet and the pressure (low-pressure side) from expansion device outlet to cylinder compression chamber entrance.
The pressure in the second slide plate chamber 83 in Fig. 1 is high side pressure Pd, and the front end N of the second slide plate 82 and the periphery of the second piston 81 abut against and reciprocating in the second vane slot.Therefore, the low-pressure gas that pressure is Ps being drawn into the second compression chamber 85 from the second suction hole 84 becomes, after being compressed by the second piston 81, the gases at high pressure that pressure is Pd and discharges from first row pore 53.
As in figure 2 it is shown, the second slide plate 82 by the first moving surface S on the side and the second moving surface T, be positioned at upper and lower the 3rd moving surface U and the four moving surface V totally four moving surfaces and the front end face R and rear end face M that comprise above-mentioned front end N, add up to six faces to constitute.Second vane slot is made up of the first corresponding with the first moving surface S and the second moving surface T-phase slide plate cell wall 88 and the second slide plate cell wall 89.
Second slide plate 82 has been arranged around first by indent 90 near rear end face M on the first moving surface S, and first is connected by indent 90 and connectivity slot 93 to the second slide plate chamber 83 opening with this.
On the second moving surface T, it is subject on the position that indent 90 is relative with first on the first moving surface S and is provided with second by indent 91.First is preferably equal by indent 90 and second by the groove area of indent 91.The degree of depth of groove has the degree of 0.2～0.5mm just may be used comprising connectivity slot 93 together.
The pressure hole 92 to the second slide plate cell wall 89 perforate from the outside of the second cylinder 80, as shown in Figure 3, at least the second slide plate 82 will static in the second vane slot time, pressure hole 92 is connected by indent 91 with second.Owing to the purpose of pressure hole 92 is to make second to be become high-pressure side by the pressure of indent 91, therefore there is the degree of 2～3mm in its aperture.
Then, according to Fig. 1 and Fig. 3, illustrate to make the second slide plate stop in the second vane slot, or release the technical scheme stopped.State in Fig. 1 is the pressure in the second slide plate chamber 83 is high side pressure Pd, and first connected with the second slide plate chamber is also high-pressure side by the pressure of indent 90.Second is connected pressure hole 92 by indent 91 when the reciprocating motion of the second slide plate 82, and therefore, second is generally high side pressure Pd by the pressure of indent 91.
Therefore, second is zero by indent 91 and first by the pressure differential Δ p of indent 90, further, since the two is identical by the area of indent, two is zero by the produced active force to the second slide plate 82 side of indent.Therefore, making the active force that the second slide plate 82 pushes to the first slide plate cell wall 88 and the second slide plate cell wall 89 not work, therefore the second slide plate 82 does not increase lost motion and reciprocating sleekly.
Such as Fig. 3, when the pressure in the second slide plate chamber 83 is switched to low-pressure lateral pressure Ps by high side pressure Pd, simultaneously, first is become low-pressure lateral pressure by the pressure of indent 90.Owing to second is high side pressure Pd by the pressure of indent 91, so these are by the pressure differential Δ p=Pd-Ps > 0 of indent, produce directed force F.The pressure in the second slide plate chamber 83 and the pressure of the second compression chamber 85 are equal, and only small.
Therefore, directed force F it is pushed to the second slide plate 82 of the first slide plate cell wall 88 and can not follow the eccentric revolution of the second piston 81 and stop at the position of lower dead center, namely stop at the second slide plate 82 and move back and forth minimum position.Now, the minimum clearance between front end N and the periphery of the second piston 81 of the second slide plate 82 is close to zero.Making the second compression chamber 85 become the low-pressure lateral pressure Ps equal with suction pressure by the second slide plate 82 from the second piston 81 disengaging, the second piston 81 dallies in the second compression chamber 85.Time the pressure in the second slide plate chamber 83 is low-pressure lateral pressure Ps, keeping two pressure differential Δ p by indent, therefore the second slide plate 82 continues to stop.
Then, release the second slide plate 82 static time, the pressure in the second slide plate chamber 83 is switched to high side pressure Pd by low-pressure lateral pressure Ps.Now, first is subject to the pressure of indent 90 owing to being switched to high side pressure, therefore first is subject to the pressure and second of indent 90 by the pressure differential Δ p vanishing between the pressure of indent 91, and, the pressure of the rear end face M of the second slide plate 82 becomes high side pressure.Therefore, the second slide plate 82 flies out towards the second compression chamber 85 being positioned at low-pressure lateral pressure, and the front end N of the second slide plate 82 and the periphery of the second piston 81 abut against, and the compression campaign of the second compression chamber 85 starts again at.As above-mentioned second slide plate 82 does not increase lost motion, reciprocating sleekly.
In the present invention, if second by indent 91 and first by the enlarged areas of indent 90, the stop force of the second slide plate 82 can be made to increase corresponding proportion.Now, it is not necessary that expand the aperture of pressure hole 92.The pressure in the second slide plate chamber 83 is in the moment being switched to high side pressure Pd, two pressure differentials by indent are zero, therefore although the pressure (being now high side pressure) in the second slide plate chamber 83 is a little bit smaller, and the second slide plate 82 also is able to fly out to the second compression chamber 85.
Although it is to say, two relative pressure differential Δ p by indent in the present invention are little, 1) when the area by indent increases, the stop force of the second slide plate 82 can increase；2) unrelated with the area by indent pressure differential Δ p can vanishing, thus also can make second slide plate 82 release stop.
It addition, increase by two in turn by the pressure differential Δ p between indent, 3) the second slide plate 82 is without increasing lost motion, it is possible to reciprocating sleekly；4) owing to the stop force of the second slide plate 82 becomes big, it is better able to guarantee that stopping the second slide plate 82 moves.
That is, as long as the area by indent is increased to more than certain area by the present invention, it is possible to really and easily stop the second slide plate 82 and release stopping, it addition, also need not too much rely on the feature of pressure differential Δ p.Its result, the motor control of the second slide plate 82 becomes very easy.
Such as, during the cooling operation that time such as night, air conditioner load is little, pressure differential Δ p between high side pressure Pd and low-pressure lateral pressure Ps is little, and under condition so, the capability control of compressor also is able to become comfortable, and the raising for comfort and running efficiency is contributed.
It addition, as described in Example 4, the second slide plate 82 adds sliding blade spring, can still provide for the operating control of the second slide plate 82, it is achieved the capability control of the rotary compressor that single cylinder is constituted.
In the whole motor process of the second slide plate 82, it is possible to be designed to second and connected pressure hole 92 by indent 91.It addition, the total length by indent can be elongated in this design, so needing the shape of groove to be designed to as shown in Figure 4 ellipse or Long Circle.
In embodiment 1, the second of the second slide plate 82 is subject to indent 90 by indent 91 and first, configures first in the side of the second inlet hole 84 by indent 90, configures second in the side of first row pore 53 by indent 91 and pressure hole 92.Also these can be configured converse, configure second in the side of the second suction hole 84 by indent 91 and pressure hole 92, configure first in the side of first row pore by indent 90.
It addition, when the side of the second cylinder 80 connects suction nozzle etc., in order to avoid suction nozzle and the interference of pressure hole 92, it is possible to by second by indent 91 and first by any one of indent 90, or two are divided into a plurality of by indent.
Here, by the disclosed technology of existing representative patent documentation 1 and patent documentation 2, and the technology of above-mentioned disclosure of the invention compares.From this comparative result, compared with the prior art, it may be said that the present invention is advantageous in slide plate control.
It addition, in the method for patent documentation 1, when increasing the aperture of pressure hole and low pressure hole, the active force that slide plate stops can increasing, but the releasing of slide plate stops becoming difficulty, and, there is the contradiction that the lost motion in vane motion increases.In method disclosed in patent documentation 2, when increasing the magnetic force of Magnetitum, the active force that slide plate stops can increasing, but there is slide plate and release the contradiction of comparatively difficulty when stopping.
Time the active force of slide plate stopping is little, or slide plate releases when stopping upper difficulty, owing to slide plate front end can not abut piston outer periphery instantaneously, produces several seconds strong strike notes (or beating sound) between slide plate front end and piston outer periphery.Now, there is the danger producing damage slide plate front end.
Embodiment 2
Referring to Fig. 5, in the first slide plate cell wall 88 and the second slide plate cell wall 89 of the second slide plate 82, it is separately installed with the 3rd and is subject to indent 102 by indent 101 and the 4th.As shown in Figure 6, the 3rd is subject to indent 101 by being arranged in the connectivity slot 93 in the first moving surface S of the second slide plate 82, connects the second slide plate chamber 83.4th is connected with the pressure hole 92 of the bottom perforate towards the second cylinder 80 by indent 102.
In embodiment 1, processing on slide plate by indent and, constitute between the slide plate cell wall corresponding with each moving surface of slide plate and have space to keep pressure, in example 2, it does not have arranging to constitute between the side of the slide plate by indent and processing semicircle bore on slide plate cell wall has space to keep pressure.Therefore, in the force principal of slide plate, embodiment 2 is the same with embodiment 1.
In example 2, the second slide plate 82 stops in the second vane slot, also has and releases the method can used when stopping similarly to Example 1.It is to say, by the pressure in the second slide plate chamber 83 from high side pressure Pd be switched to low-pressure lateral pressure Ps time, the 3rd be low-pressure side by indent 101, and the 4th to be subject to indent 102 be high-pressure side, thus the second slide plate 82 stops in vane slot, as shown in Figure 5.When releasing slide plate stopping, the pressure in the second slide plate chamber is switched to high side pressure Pd from low-pressure lateral pressure Ps.
It addition, connectivity slot 93 also may be provided in the first slide plate cell wall 88.As simplest example, it is possible at upper end or the lower chamfer of the first slide plate cell wall 88, make to be communicated to the second slide plate chamber 83 from the 3rd by indent 101.
In example 2, processed after a cylinder hole by vane slot broaching tool operation by the center of the second vane slot at the second cylinder, it is possible to as Fig. 5 constitute two by indent.It addition, the diameter of adjustment cylinder hole and working depth can adjust the area by indent.
In embodiment 1, on the first relative moving surface S and the second moving surface T of the second slide plate 82, embodiment 2 is arranged by indent with the first above-mentioned moving surface S with on the first slide plate cell wall 88 of connecing of the second moving surface T-phase and the second slide plate cell wall 89 at these.Make relative two by producing pressure differential Δ p between indent.
But, similarly on the 3rd relative moving surface U and the four moving surface V of the second slide plate 82, or it is subject to indent with two normal surfaces of the 3rd moving surface U and the 4th moving surface V vane slot connected are arranged, it is also possible to produce pressure differential Δ p in the same manner as embodiment 1 and 2.In other words, two relative motion faces of the second slide plate 82 in device for controlling sliding vane include being positioned at the 3rd upper and lower moving surface U and the four moving surface V, first compression zone be arranged on the 3rd moving surface U the 5th by indent, the second compression zone be arranged on the 4th moving surface V the 6th by indent；Or, two relative motion faces of the second slide plate 82 in device for controlling sliding vane include being positioned at the 3rd upper and lower moving surface U and the four moving surface V, the 7th are subject to indent by indent and the 8th respectively with on the 3rd moving surface U and the 4th moving surface V two faces connected in the second vane slot.The part not described in two technical schemes above, it is possible to the content in reference example 1 and 2, is just not repeated here.
Embodiment 3
The present embodiment 3 is to be applied in 2 air-cylinder type rotary compressors by opening the technical scheme shown in embodiment 1, it is possible to by the complete design example of the volume control rotary compressor that refrigerating capacity 2 sections controls.
In the figure 7, rotary compressor R by the motor 35 being fixed in closed shell 11 and compresses what mechanism 30 was constituted.Compression mechanism 30 includes the first cylinder and the second cylinder and the first piston 71 being arranged in each compression chamber and the first slide plate the 72, second piston 81 and the second slide plate 82, with the central dividing plate 60 distinguishing two cylinders, and support to drive the base bearing 40 of bent axle 31 and the supplementary bearing 50 of two pistons.
Being provided with reservoir 16 on housing 11 side, suction tube 17 is arranged in the first cylinder 70, enters suction tube 17 by the low-pressure gas after reservoir 16, is then tapped off the second compression chamber 85 of compression chamber and the second cylinder 80 flowing into the first cylinder 70.
The gases at high pressure that pressure is Pd after compressing in the second compression chamber 85 are out discharged to the top of base bearing 40 again from first row pore 53 via acoustic filter 51 from gas orifice 54.Here, with the gases at high pressure that pressure the is Pd interflow discharged from the first cylinder 70.
On Fig. 8, the device for controlling sliding vane being formed in the second cylinder 80 has used the technical scheme in embodiment 1.The upper and lower opening portion in the second slide plate chamber 83, each free central dividing plate 60 and supplementary bearing 50 are airtight.The pressure switching pipe 24 at the rear portion being connected to the second slide plate chamber 83 is connected in the three-way valve being arranged in outside housing 11.
Three-way valve 20 connects inside and the suction nozzle 17 of housing 11 respectively, is namely connected respectively to high-pressure side and low-pressure side.Wherein, high tension loop is indicated by the solid line, and low tension loop is represented by dashed line.The pressure in the second slide plate chamber 83, is switched between high side pressure and low-pressure lateral pressure by moving back and forth of the slide block 25 of three-way valve 20.
In Fig. 8, the pressure in the second slide plate chamber 83 is high side pressure Pd, and the second slide plate 82 moves, and the first cylinder 70 is compressed effect together with the second cylinder 80.Therefore, the coolant ability of rotary compressor R is 100 mode operations.
Fig. 9 is after the pressure in the second slide plate chamber 83 is switched to low-pressure lateral pressure Ps, the state that the second slide plate 82 stops.Now, the second piston 81 dallies, and compression is interrupted.Therefore, becoming and only have being compressed of the first cylinder 70, the refrigerating capacity of rotary compressor R is switched to 65 mode operations.
It addition, the rotary compressor R used in embodiment 3, the total discharge capacity of the first cylinder 70 and the second cylinder 80 calculates 100%, and the discharge capacity of the first cylinder 70 is 65%, and the discharge capacity of the second cylinder is 35%.Thus, 100 patterns represent the refrigerating capacity of 100%, and 65 patterns represent the refrigerating capacity of 65%.
All the other not described parts are shown in embodiment 1, are not repeated.
Embodiment 4
The present embodiment 4 is technical scheme disclosed in Application Example 1 in single cylinder rotary compressor, as the complete design example of the volume controlled rotary compressor controlling refrigerating capacity.
In Fig. 10, each free base bearing 40 in the upper and lower opening portion in the second slide plate chamber 83 and supplementary bearing 50 are airtight.The pressure switching pipe 24 at the rear portion being connected to the second slide plate chamber 83 connects the three-way valve being provided in outside housing 11, three-way valve not shown in FIG..
Second slide plate 82 rearward end is provided with sliding blade spring 86, and processes and have the spring eye 87 making sliding blade spring 86 to stretch.It addition, in order to make second more easily to be configured by indent 90 (illustrating in Fig. 2) by indent 91 and first, the center-biased of the position of sliding blade spring 86 and spring eye 87 and the second slide plate 82.It addition, first is communicated to spring eye 87 by indent 90 by connectivity slot 93, therefore equal with the pressure in the second slide plate chamber 83.
Time in compressor operation in the second slide plate 82 motion, or when compressor stops, sliding blade spring 86 front end of the second slide plate 82 is made to be pushed on the periphery of the second piston 81.But, if the pressure in the second slide plate chamber 83 is switched to low-pressure lateral pressure, two pressure differential Δ p by indent make the second slide plate 82 stop in vane slot.Figure 10 represents such state.
In example 4, owing to the second slide plate is with sliding blade spring 86, it is possible to start with single cylinder rotary compressor and start simultaneously at compression running.But, owing to make the active force that the second slide plate 82 stops needing become big with sliding blade spring.But, by embodiment 1 is opened the enlarged-area by indent shown with effect increase the stop force of the second slide plate 82 and be also not difficult.
Additionally, with in single cylinder rotary compressor of the slide plate Control function of the present invention, by stopping the second slide plate 82 in operating, or releasing stops the second slide plate 82 and controls refrigerating capacity, owing to need not rely on very much pressure differential Δ p, the on/off of operating controls to become easy.
All the other not described parts are shown in embodiment 1, are not repeated.
Claims (8)
- null1. a rotary compressor，Compression mechanism (30) and motor (35) it is provided with in housing (11)，Compression mechanism (30) includes cylinder (80)，Bent axle (31) drives piston (81) to do eccentric revolution in the compression chamber of cylinder (80)，Slide plate (82) is accommodated in the vane slot in cylinder (80)，The front end of slide plate (82) can abut against with the periphery of piston (81)，The rear end in the airtight slide plate chamber (83) storage slide plate (82) being arranged on cylinder (80)，Base bearing (40) and supplementary bearing (50) are used for supporting bent axle (31)，Pressure switching mechanism makes the pressure in slide plate chamber (83) switch between high side pressure and low-pressure lateral pressure，It is characterized in that also including device for controlling sliding vane，This device for controlling sliding vane includes being provided with the first compression zone in one of them in two relative motion faces on slide plate (82)、Another is provided with the second compression zone，Wherein，The pressure of the first compression zone is equal with the pressure of slide plate chamber (83)，The pressure of the second compression zone and high side pressure are equal or approximately equal；Pressure switching mechanism is by being switched to low-pressure lateral pressure by the above-mentioned pressure for the slide plate chamber (83) of high side pressure and make the action of slide plate (82) stop, or making slide plate (82) release to stop by the above-mentioned pressure for the above-mentioned slide plate chamber (83) of low-pressure lateral pressure is switched to high side pressure, the first compression zone and the area of the second compression zone in described device for controlling sliding vane are of substantially equal.
- 2. rotary compressor according to claim 1, it is characterized in that two relative motion faces of the slide plate in described device for controlling sliding vane (82) include the first moving surface (S) on the side and the second moving surface (T), first compression zone be arranged on the first moving surface (S) first by indent (90), the second compression zone be arranged on the second moving surface (T) second be subject to indent (91)；First moving surface (S) is additionally provided with the connectivity slot (93) being subject to indent (90) to be connected with first and to slide plate chamber (83) opening, pressure hole (92) slide plate cell wall (89) perforate to vane slot from the outside of cylinder (80), at least slide plate (82) will static in vane slot time, pressure hole (92) is connected by indent (91) with second.
- 3. rotary compressor according to claim 2, is characterized in that being provided with inlet hole (84) and first row pore (53) on described cylinder (80)；Wherein, first is arranged on the side of inlet hole (84) by indent (90), and second is arranged on the side of first row pore (53) by indent (91) and pressure hole (92)；Or, second is arranged on the side of inlet hole (84) by indent (91) and pressure hole (92), and first is arranged on the side of first row pore (53) by indent (90).
- 4. rotary compressor according to claim 1, it is characterized in that described device for controlling sliding vane includes arranging in the first slide plate cell wall (88) at vane slot the 3rd by indent (101) and arrange in the slide plate cell wall (89) of vane slot the 4th by indent (102), wherein, first compression zone is the 3rd by indent (101), and the second compression zone is the 4th by indent (102)；3rd is connected slide plate chamber (83) by indent (101) by connectivity slot (93), 4th is connected with the pressure hole (92) of the bottom perforate towards cylinder (80) by indent (102), wherein, connectivity slot (93) is arranged in the first moving surface (S) on slide plate (82), or, connectivity slot (93) is arranged in the first slide plate cell wall (88).
- 5. rotary compressor according to claim 1, it is characterized in that two relative motion faces of the slide plate in described device for controlling sliding vane (82) include being positioned at the 3rd upper and lower moving surface (U) and the 4th moving surface (V), first compression zone be arranged on the 3rd moving surface (U) the 5th by indent, the second compression zone be the be arranged on the 4th moving surface (V) the 6th be subject to indent.
- 6. rotary compressor according to claim 1, it is characterized in that two relative motion faces of the slide plate in described device for controlling sliding vane (82) include being positioned at the 3rd upper and lower moving surface (U) and the 4th moving surface (V), the face connected with the 3rd moving surface (U) in vane slot arranges the 7th by indent, the face connected with the 4th moving surface (V) arranges the 8th by indent in vane slot.
- 7. according to the arbitrary described rotary compressor of claim 1 to 6, it is characterized in that in the twin-tub rotation-type compressor being made up of two cylinders, any one in these two cylinders comprises device for controlling sliding vane.
- 8., according to the arbitrary described rotary compressor of claim 1 to 6, it is characterized in that, in the single cylinder rotary compressor being made up of single cylinder, this single cylinder comprises device for controlling sliding vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210079463.2A CN103321907B (en) | 2012-03-22 | 2012-03-22 | Rotary compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210079463.2A CN103321907B (en) | 2012-03-22 | 2012-03-22 | Rotary compressor |
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| CN103321907A CN103321907A (en) | 2013-09-25 |
| CN103321907B true CN103321907B (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200084716A (en) | 2019-01-03 | 2020-07-13 | 엘지전자 주식회사 | Rotary compressor |
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| CN107191373A (en) * | 2017-07-31 | 2017-09-22 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating plant |
| CN107237754B (en) * | 2017-08-07 | 2019-12-17 | 珠海格力电器股份有限公司 | Rotor compressor with air supplementing structure and compression method |
| CN110836182A (en) * | 2018-08-17 | 2020-02-25 | 广东美芝制冷设备有限公司 | Capacity control type rotary compressor and refrigeration cycle device |
| CN110454389A (en) * | 2019-08-08 | 2019-11-15 | 珠海凌达压缩机有限公司 | Compression structure for rotary compressor, rotary compressor and air conditioner |
| CN110953151A (en) * | 2019-11-25 | 2020-04-03 | 珠海格力电器股份有限公司 | Pump body subassembly and have its sliding vane compressor |
| CN112324514B (en) * | 2020-11-13 | 2021-11-09 | 珠海格力电器股份有限公司 | Expander and air conditioner |
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