CN103321907A - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN103321907A CN103321907A CN2012100794632A CN201210079463A CN103321907A CN 103321907 A CN103321907 A CN 103321907A CN 2012100794632 A CN2012100794632 A CN 2012100794632A CN 201210079463 A CN201210079463 A CN 201210079463A CN 103321907 A CN103321907 A CN 103321907A
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Abstract
A rotary compressor is provided. A compression mechanism and motors are arranged inside a housing. The compression mechanism includes a second cylinder, a second piston is driven to perform eccentric rotary in a compression cavity of the second cylinder by a crankshaft, a second slip sheet is accommodated in a second slip sheet groove of the second cylinder, the front end of the second slip sheet can be supported against a periphery of the second piston, the rear end of the second slip sheet is accommodated in a sealing second slip sheet cavity arranged on the second cylinder, a main bearing and a supplementary bearing are used for supporting the crankshaft, and a pressure switch mechanism enables a pressure of the second slip sheet cavity to switch between a high-pressure side pressure and a low-pressure side pressure. The rotary compressor also includes a slip sheet control device. The slip sheet control device includes a first compression part and a second compression part which are respectively arranged on two relative motion surfaces of the second slip sheet, wherein a pressure of the first compression part is equal to the pressure of the second slip sheet cavity, and a pressure of the second compression part is generally equal to the high-pressure side pressure. The rotary compressor has the characteristics of flexible operation, low loss, low wear and wide range of application.
Description
Technical field
The present invention relates to a kind of rotary compressor.
Background technique
In recent years, the technology of controlling refrigerating capacity with two cylinder type rotary compressors is constantly progressive, as an example, the pressure in the slide plate chamber of the closure in the cylinder of compressor is by switching between low-pressure lateral pressure and high side pressure, and the volume controlled technology of adjusting the refrigerating capacity of compressor enjoys gazes at.On the relative movement side of slide plate, elevated pressure and low pressure stop in the vane slot in order to utilize the pressure official post slide plate between this high pressure and the low pressure separately, and this pressure difference must be enough large.In addition, if stop and difficult when the excessive releasing slide plate of pressure difference, 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
Purpose of the present invention aims to provide a kind of simple and reasonable, flexible operation, loss is little, abrasion are low, applied widely rotary compressor, to overcome deficiency of the prior art.
A kind of rotary compressor by this purpose design, be provided with compressing mechanism and motor in the housing, compressing mechanism comprises the second cylinder, crank-driven the second piston is done eccentric revolution in the compression chamber of the second cylinder, the second slide plate is accommodated in the second vane slot in the second cylinder, the front end of the second slide plate can connect with the periphery of the second piston, be arranged on the rear end that the second slide plate is taken in the second airtight slide plate chamber on the second cylinder, main bearing and supplementary bearing are used for supporting bent axle, the pressure switching mechanism switches the pressure in the second slide plate chamber between high side pressure and low-pressure lateral pressure, its structure characteristic is also to comprise device for controlling sliding vane, this device for controlling sliding vane is included on two relative movement faces on the second slide plate and is respectively arranged with the first compression zone and the second compression zone, wherein, the pressure of the first compression zone equates with the pressure in the second slide plate chamber, and the pressure of the second compression zone equates or approximately equal with high side pressure usually; The pressure switching mechanism switches to low-pressure lateral pressure by the pressure with above-mentioned the second slide plate chamber for high side pressure, perhaps switch to high side pressure by the pressure with above-mentioned above-mentioned the second slide plate chamber for low-pressure lateral pressure, and make the action of the second slide plate stop or removing stopping.
The first compression zone in the described device for controlling sliding vane is substantially equal with the area of the second compression zone.
Two relative movement faces of the second slide plate in the described device for controlling sliding vane comprise the first moving surface and the second moving surface that is positioned at the side, the first compression zone is to be arranged on first on the first moving surface to be subjected to indent, and the second compression zone is to be arranged on second on the second moving surface to be subjected to indent; Also be provided with on the first moving surface and be connected by indent with first and to the connectivity slot of the second slide plate chamber opening, pressure hole from the outside of the second cylinder to the second slide plate cell wall perforate of the second vane slot, when at least the second slide plate will be static in the second vane slot, pressure hole was communicated with by indent with second.
Be provided with the second inlet hole and first row pore on described the second cylinder; Wherein, first is subjected to indent to be arranged on a side of the second inlet hole, and second is subjected to indent and pressure hole to be arranged on a side of first row pore; Perhaps, second is subjected to indent and pressure hole to be arranged on a side of the second inlet hole, and first is subjected to indent to be arranged on a side of first row pore.
Described device for controlling sliding vane be included in arrange respectively in the first slide plate cell wall of the second vane slot and the second slide plate cell wall the 3rd be subjected to indent and the 4th to be subjected to indent, wherein, the first compression zone is the 3rd to be subjected to indent, the second compression zone is the 4th to be subjected to indent; The 3rd is subjected to indent being communicated with the second slide plate chamber by connectivity slot, and the 4th be communicated with pressure hole towards the perforate of the bottom of the second cylinder by indent; Wherein, connectivity slot is arranged in the first moving surface on the second slide plate, and perhaps, connectivity slot is arranged in the first slide plate cell wall.
Two relative movement faces of the second slide plate in the described device for controlling sliding vane comprise the 3rd moving surface and the 4th moving surface about being positioned at, the first compression zone is to be arranged on the 5th on the 3rd moving surface to be subjected to indent, and the second compression zone is to be arranged on the 6th on the 4th moving surface to be subjected to indent.
Two relative movement faces of the second slide plate in the described device for controlling sliding vane comprise the 3rd moving surface and the 4th moving surface about being positioned at, and the 7th are subjected to indent and the 8th to be subjected to indent respectively on two faces that join with the 3rd moving surface and the 4th moving surface in the second vane slot.
In the twin-tub rotation-type compressor that is made of two cylinders, any one in these two cylinders comprises device for controlling sliding vane.
In the single cylinder rotary compressor that is made of single cylinder, this single cylinder comprises device for controlling sliding vane.
The present invention is subjected to indent and first to be subjected to indent by arrange respectively second on two moving surfaces that are positioned at the second slide plate 82 sides, respectively by pressure hole and connectivity slot UNICOM enclosure interior and the second slide plate chamber, so these two pressure that are subjected to indent respectively do for oneself high side pressure Pd and low-pressure lateral pressure Ps.Because two are subjected to the area of indent enough large, therefore with regard to very little at last pressure difference, the directed force F that acts on the second slide plate is also larger, and slide plate is stopped.Therefore when the pressure in the second slide plate chamber switched to high side pressure, first was subjected to the pressure of indent to become high side pressure, first was subjected to indent and second to be subjected to pressure difference vanishing between the indent 91, and the action of removing the second slide plate stops, and cylinder compresses.This technological scheme can not increase lost motion and the abrasion of the second slide plate.
The present invention just can make the second slide plate static by very little pressure difference, also can remove the static of the second slide plate, in other words, even if under the little operating condition of pressure difference, also can control the refrigerating capacity of compressor.When the pressure difference in the second vane motion was zero, the power that acts on the second slide plate side was zero.Therefore, can not occur because the lost motion of the slide plate that pressure difference produces increases and abrasion, the control of the second slide plate also becomes and is more prone to.
That the present invention has is simple and reasonable, flexible operation, loss are little, the low and applied widely characteristic of abrasion.
Description of drawings
Fig. 1 is in the embodiments of the invention 1, and expression is formed in the planimetric map (in the vane motion) of device for controlling sliding vane of the cylinder interior of rotary compressor.
Fig. 2 is among the embodiment 1, the schematic diagram that be subjected to indent of processing on slide plate.
Fig. 3 is among the embodiment 1, the planimetric map (slide plate stop in) of expression device for controlling sliding vane.
Fig. 4 is among the embodiment 1, the details drawing that be subjected to indent of processing on slide plate.
Fig. 5 is in the embodiments of the invention 2, and expression is formed in the planimetric map (slide plate stop in) of device for controlling sliding vane of the cylinder interior of rotary compressor.
Fig. 6 is among the embodiment 2, the details drawing of device for controlling sliding vane.
Fig. 7 is in the embodiments of the invention 3, the longitudinal section of expression two-cylinder rotary compressor inside.
Fig. 8 is among the embodiment 3, the longitudinal section (in the vane motion) of the formation of expression device for controlling sliding vane.
Fig. 9 is among the embodiment 3, the longitudinal section (slide plate stop in) of the formation of expression device for controlling sliding vane.
Figure 10 is in the embodiments of the invention 4, represents the longitudinal section of the inside of single cylinder rotary compressor.
Among the figure: R is rotary compressor R, and 11 is housing, and 16 is liquid-storage container, and 17 is sucking pipe, 20 is three-way valve, and 24 for pressure switches pipe, and 25 is slide block, and 30 is compressing mechanism, 31 is bent axle, and 35 is motor, and 40 is main bearing, and 50 is supplementary bearing, 51 is silencing apparatus, and 53 is the first row pore, and 54 is gas orifice, 60 is intermediate clapboard, and 70 is the first cylinder, and 71 is first piston, 72 is the first slide plate, and 80 is the second cylinder, and 81 is the second piston, 82 is the second slide plate, and 83 is the second slide plate chamber, and 84 is the second suction port, 85 is the second compression chamber, and 86 is sliding blade spring, and 87 is spring eye, 88 is the first slide plate cell wall, and 89 is the second slide plate cell wall, and 90 is first to be subjected to indent, 91 is second to be subjected to indent, and 92 is pressure hole, and 93 is connectivity slot, 101 is the 3rd to be subjected to indent, and 102 is the 4th to be subjected to indent, and Pd is high pressure, Ps is low pressure, and L is front-end face, and M is ear end face, N is front end, and S is the first moving surface, and T is the second moving surface, U is the 3rd moving surface, and V is the 4th moving surface, and F is active force.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1
Referring to Fig. 1 and Fig. 3, expression consist of rotary compressor compressing mechanism 30 the second cylinder 80 and be configured in the second cylinder 80 internal controls the second slide plate 82 and stop and removing the device for controlling sliding vane that stops.Fig. 2 represents to be formed in the detailed structure of the second slide plate 82 of 80 li in the second cylinder.
Be provided with compressing mechanism 30 and motor 35 in the housing 11 of rotary compressor, compressing mechanism 30 comprises the second cylinder 80, bent axle 31 drives the second piston 81 and do eccentric revolution in the compression chamber of the second cylinder 80, the 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 connect with the periphery of the second piston 81, be arranged on the rear end that the second slide plate 82 is taken in the second airtight slide plate chamber 83 on the second cylinder 80, main bearing 40 and supplementary bearing 50 are used for support bent axle 31, and the pressure switching mechanism switches the pressure in the second slide plate chamber 83 between high side pressure and low-pressure lateral pressure.The pressure switching mechanism switches to low-pressure lateral pressure by the pressure with above-mentioned the second slide plate chamber 83 for high side pressure, perhaps switch to high side pressure by the pressure with above-mentioned above-mentioned the second slide plate chamber 83 for low-pressure lateral pressure, and make the action of the second slide plate 82 stop or removing stopping.
Fig. 1 is for carrying out the state of compression work by the second slide plate 82 motions the second compression chamber 85.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.
The second piston 81 is driven by bent axle 31 described later and does anticlockwise eccentric revolution along the second compression chamber 85 inwalls.The upper and lower opening section in the second slide plate chamber 83 is by two bearings of aftermentioned and intermediate clapboard sealing, and therefore the second slide plate chamber 83 is sealed.
Be connected to the pressure switching mechanism of the rear wall in the second slide plate chamber 83, namely pressure switches pipe 24, bringing into play with the pressure in the second slide plate chamber 83 high side pressure Pd that the exhaust pressure with the second compression chamber 85 equates and with low-pressure lateral pressure Ps that the gas inhalating pressure of sucking pipe 17 equates between switch.But, the pressure of on high-tension side pressure and low voltage side, not only refer to the cylinder pressure of compressor, say scrupulously be defined as compressor on the freeze cycle till the expansion device inlet pressure (high pressure side) and export to the pressure (low voltage side) of cylinder compression chamber entrance from expansion gear.
The pressure in the second slide plate chamber 83 among 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 connect and be reciprocating in the second vane slot.Therefore, being drawn into pressure the second compression chamber 85 from the second suction port 84 is that to become pressure after by 81 compressions of the second piston be that the pressurized gas of Pd are discharged from first row pore 53 for the low-pressure gas of Ps.
As shown in Figure 2, the second slide plate 82 by the first moving surface S that is positioned at the side and the second moving surface T, be positioned at up and down the 3rd moving surface U and the 4th moving surface V totally four moving surfaces and comprise front-end face R and the ear end face M of above-mentioned front end N, adds up to six faces formations.The second vane slot is made of corresponding with the first moving surface S and the second moving surface T the first slide plate cell wall 88 and the second slide plate cell wall 89.
The second slide plate 82 is being provided with first and is being subjected to indent 90 near near ear end face M on the first moving surface S, and first be connected by indent 90 and to the connectivity slot 93 of the second slide plate chamber 83 openings with this.
On the second moving surface T, be subjected to be provided with second on the relative position of indent 90 with first on the first moving surface S and be subjected to indent 91.First is subjected to indent 90 and second to be subjected to the groove area of indent 91 to be preferably equal.The degree of depth of groove has the degree of 0.2～0.5mm just can comprising connectivity slot 93 together.
To the pressure hole 92 of the second slide plate cell wall 89 perforates, as shown in Figure 3, when at least the second slide plate 82 will be static in the second vane slot, pressure hole 92 and second was communicated with by indent 91 from the outside of the second cylinder 80.Because the purpose of pressure hole 92 is to make second to be subjected to the pressure of indent 91 to become the high pressure side, so its aperture has the degree of 2～3mm to get final product.
Then, according to Fig. 1 and Fig. 3, illustrate the second slide plate is stopped in the second vane slot, perhaps remove the technological scheme that stops.State among Fig. 1 is that the pressure in the second slide plate chamber 83 is high side pressure Pd, and the first pressure that is subjected to indent 90 that is communicated with the second slide plate chamber also is the high pressure side.Second is subjected to indent 91 to be communicated with pressure hole 92 when the to-and-fro motion of the second slide plate 82, and therefore, second is subjected to the pressure of indent 91 to be generally high side pressure Pd.
Therefore, second to be subjected to indent 91 and first to be subjected to the pressure difference Δ p of indent 90 be zero, in addition since these two to be subjected to the area of indent be identical, two active forces to the second slide plate 82 sides that produced by indent are zero.Therefore, the second slide plate 82 is not worked to the active force of the first slide plate cell wall 88 and the pushing of the second slide plate cell wall 89, 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 was switched to low-pressure lateral pressure Ps by high side pressure Pd, side by side, first was subjected to the pressure of indent 90 to become low-pressure lateral pressure.Because second to be subjected to the pressure of indent 91 be high side pressure Pd, so these are subjected to the pressure difference Δ p=Pd-Ps of indent＞0, produce directed force F.The pressure of the pressure in the second slide plate chamber 83 and the second compression chamber 85 is equal, and very little.
Therefore, the second slide plate 82 that is pushed to the first slide plate cell wall 88 by directed force F can not be followed the off-centre revolution of the second piston 81 and be stopped at the position of lower dead center, namely stops at the position of the second slide plate 82 to-and-fro motion minimums.At this moment, the minimum clearance between the periphery of the front end N of the second slide plate 82 and the second piston 81 approaches zero.Make the second compression chamber 85 become the low-pressure lateral pressure Ps that equates with suction pressure by the second slide plate 82 from 81 disengagings of the second piston, the second piston 81 dallies in the second compression chamber 85.When the pressure in the second slide plate chamber 83 is low-pressure lateral pressure Ps, keep two pressure difference Δ p that are subjected to indent, therefore the second slide plate 82 continues to stop.
Then, when removing the second slide plate 82 static, the pressure in the second slide plate chamber 83 is switched to high side pressure Pd by low-pressure lateral pressure Ps get final product.At this moment, the first pressure that is subjected to indent 90 is owing to switching to high side pressure, thus first be subjected to the pressure and second of indent 90 to be subjected to pressure difference Δ p vanishing between the pressure of indent 91, and also the pressure of the ear 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 that is 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 connect, and the compression movement of the second compression chamber 85 begins again.Do not increase lost motion such as above-mentioned the second slide plate 82, reciprocating sleekly.
In the present invention, if second be subjected to indent 91 and first to be subjected to the enlarged areas of indent 90, corresponding proportion ground that the power that stops of the second slide plate 82 is increased.At this moment, there is no need to enlarge the aperture of pressure hole 92.The pressure in the second slide plate chamber 83 is in the moment that switches to high side pressure Pd, two are subjected to the pressure difference of indent is zero, therefore although a little bit smaller, the second slide plate 82 also can fly out to the second compression chamber 85 pressure in the second slide plate chamber 83 (be high side pressure this moment).
That is to say although two relative pressure difference Δ p that are subjected to indent in the present invention are little, 1) when the area that is subjected to indent increases, the stopping power and can increase of the second slide plate 82; 2) can vanishing with the irrelevant pressure difference Δ p of the area that is subjected to indent, thereby the second slide plate 82 is removed stop.
In addition, increase conversely two be subjected to indent between pressure difference Δ p, 3) the second slide plate 82 can not increase lost motion yet, can be reciprocating sleekly; 4) because the power that stops of the second slide plate 82 becomes large, more can guarantee to stop 82 motions of the second slide plate.
In other words, as long as will be subjected to the area of indent to increase to certain area when above among the present invention, can be really and easily stop the second slide plate 82 and releasing stops, in addition, need not too much rely in addition the feature of pressure difference Δ p.Its result, the motion control of the second slide plate 82 becomes very easy.
For example, during air conditioning load is little in the time of such as night cooling operation, pressure difference Δ p between high side pressure Pd and the low-pressure lateral pressure Ps is little, also can become comfortable at capability control of condition lower compression machine so, for the raising of comfortable feel and running efficiency is contributed.
In addition, as described in Example 4, in the second slide plate 82, append sliding blade spring, still can carry out the operating control of the second slide plate 82, realize the capability control of the rotary compressor that single cylinder consists of.
In the whole movement process of the second slide plate 82, also can be designed to second and be subjected to indent 91 to be communicated with pressure hole 92.In addition, in this design, be subjected to the total length meeting of indent elongated, so needs are designed to ellipse or long-round-shape with the shape of groove as shown in Figure 4.
In embodiment 1, second of the second slide plate 82 is subjected to indent 91 and first to be subjected to indent 90, is subjected to indent 90 in a side of the second inlet hole 84 configuration first, is subjected to indent 91 and pressure hole 92 in the side configuration second of first row pore 53.Also these can be configured conversely, be subjected to indent 91 and pressure hole 92 in a side of the second suction port 84 configuration second, be subjected to indent 90 in the side configuration first of first row pore.
In addition, when the side of the second cylinder 80 connects sucking pipe etc., in order to avoid the interference of sucking pipe and pressure hole 92, can be subjected to indent 91 and first to be subjected to any of indent 90 with second, or two be divided into a plurality of indents that are subjected to.
Here, with the disclosed technology of existing representative patent documentation 1 and patent documentation 2, and above-mentioned of the present invention disclosed technology compares.From this comparative result, compared with the prior art, can say that the present invention is more superior in slide plate control.
In addition, in the method for patent documentation 1, when increasing the aperture in pressure hole and low pressure hole, the active force that slide plate stops can to increase, but the releasing of slide plate stops difficult, and, the contradiction that exists the lost motion in the vane motion to increase.In patent documentation 2 disclosed methods, when increasing the magnetic force of magnetite, the active force that slide plate stops can to increase, but exists slide plate to remove contradiction comparatively difficult when stopping.
When the active force that slide plate stops is little, or slide plate removes when stopping upper difficulty and since the slide plate front end can not moment ground butt piston periphery, produce strong strike note (perhaps beating sound) in several seconds between slide plate front end and piston periphery.At this moment, the slide plate front end has the danger of the damage of producing.
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, be separately installed with the 3rd and be subjected to indent 101 and the 4th to be subjected to indent 102.As shown in Figure 6, the 3rd is subjected to indent 101 by the connectivity slot 93 among the first moving surface S that is configured in the second slide plate 82, is being communicated with the second slide plate chamber 83.The 4th be communicated with pressure hole 92 towards the bottom perforate of the second cylinder 80 by indent 102.
In embodiment 1, processing on slide plate be subjected to indent and, consist of between the slide plate cell wall corresponding with each moving surface of slide plate and have living space to keep pressure, in embodiment 2, the side and the processing formation between the semicircular cylinder hole on the slide plate cell wall that do not have the slide plate that is subjected to indent is set have living space to keep pressure.Therefore, on the force principal to slide plate, embodiment 2 is the same with embodiment 1.
In embodiment 2, the second slide plate 82 stops in the second vane slot, also has to remove to stop Shi Keyong method similarly to Example 1.That is to say, when the pressure in the second slide plate chamber 83 was switched to low-pressure lateral pressure Ps from high side pressure Pd, the 3rd was subjected to indent 101 to be low voltage side, and the 4th is subjected to indent 102 to be the high pressure side, thereby the second slide plate 82 stops in the vane slot, as shown in Figure 5.When removing slide plate and stopping, the pressure in the second slide plate chamber is switched to high side pressure Pd from low-pressure lateral pressure Ps.
In addition, connectivity slot 93 also can be arranged in the first slide plate cell wall 88.As the simplest example, can at upper end or the lower chamfer of the first slide plate cell wall 88, make from the 3rd be communicated to the second slide plate chamber 83 by indent 101.
In embodiment 2, by behind cylinder hole of the center of the second vane slot of the second cylinder processing by vane slot broaching tool operation, can be subjected to indent such as two of Fig. 5 ground formations.In addition, diameter and the working depth of adjusting cylinder hole can be adjusted the area that is subjected to indent.
Among the embodiment 1, on the first relative moving surface S and the second moving surface T of the second slide plate 82, embodiment 2 arranges at these first slide plate cell walls 88 that join with above-mentioned the first moving surface S and the second moving surface T and the second slide plate cell wall 89 and is subjected to indent.Make relative two to be subjected to produce between the indent pressure difference Δ p.
But, similarly on the 3rd relative moving surface U and the 4th moving surface V of the second slide plate 82, or arrange on two normal surfaces of the vane slot that joins with the 3rd moving surface U and the 4th moving surface V and be subjected to indent, also can similarly produce pressure difference Δ p with embodiment 1 and 2.In other words, two relative movement faces of the second slide plate 82 in the device for controlling sliding vane comprise the 3rd moving surface U and the 4th moving surface V about being positioned at, the first compression zone is to be arranged on the 5th on the 3rd moving surface U to be subjected to indent, and the second compression zone is to be arranged on the 6th on the 4th moving surface V to be subjected to indent; Perhaps, two relative movement faces of the second slide plate 82 in the device for controlling sliding vane comprise the 3rd moving surface U and the 4th moving surface V about being positioned at, and the 7th are subjected to indent and the 8th to be subjected to indent respectively on two faces that join with the 3rd moving surface U and the 4th moving surface V in the second vane slot.Above two technological schemes in the part of narration not, the content in can reference example 1 and 2 just no longer repeats here.
Embodiment 3
The present embodiment 3 is to be applied in the 2 cylinder type rotary compressors opening the technological scheme of showing among the embodiment 1, can be with the complete design example of the volume controlled rotary compressor of 2 sections controls of refrigerating capacity.
In Fig. 7, motor 35 in the closed shell 11 and compressing mechanism 30 consist of rotary compressor R by being fixed on.Compressing mechanism 30 comprises the first cylinder and the second cylinder and is configured in first piston 71 and the first slide plate 72, the second piston 81 and the second slide plate 82 in each compression chamber, with the intermediate clapboard 60 of distinguishing two cylinders, and support drives main bearing 40 and the supplementary bearing 50 of the bent axle 31 of two pistons.
Housing is provided with liquid-storage container 16 on 11 sides, and suction pipe 17 is installed in the first cylinder 70, enters suction pipe 17 by the low-pressure gas behind the liquid-storage container 16, and then shunting flows into the compression chamber of the first cylinder 70 and the second compression chamber 85 of the second cylinder 80.
Pressure in the second compression chamber 85 after the compression is the pressurized gas of Pd out are discharged to main bearing 40 again from gas orifice 54 via silencing apparatus 51 from first row pore 53 top.With the pressure of discharging from the first cylinder 70 be the pressurized gas interflow of Pd here.
On Fig. 8, be formed in device for controlling sliding vane in the second cylinder 80 and used technological scheme among the embodiment 1.The upper and lower opening section in the second slide plate chamber 83, each free intermediate clapboard 60 and supplementary bearing 50 are airtight.The pressure that is connected to the rear portion in the second slide plate chamber 83 switches pipe 24 and is connected in the three-way valve that is configured in housing 11 outsides.
Three-way valve 20 connects respectively inside and the sucking pipe 17 of housing 11, namely is connected respectively to high pressure side and low voltage side.Wherein, high tension loop represents with solid line, and low tension loop dots.The pressure in the second slide plate chamber 83 is switched by the moving back and forth between high side pressure and low-pressure lateral pressure of slide block 25 of three-way valve 20.
Among Fig. 8, the pressure in the second slide plate chamber 83 is high side pressure Pd, 82 motions of the second slide plate, and the first cylinder 70 and the second cylinder 80 carry out compression together.Therefore, the refrigerant ability of rotary compressor R is 100 mode operations.
Fig. 9 is after the pressure in the second slide plate chamber 83 switches to low-pressure lateral pressure Ps, the state that the second slide plate 82 stops.At this moment, the second piston 81 dallies, and compression is interrupted.Therefore, become and only have compressing of the first cylinder 70, the refrigerating capacity of rotary compressor R switches to 65 mode operations.
In addition, the rotary compressor R that uses among the embodiment 3, the discharge capacity of total discharge capacity calculation 100%, the first cylinder 70 of the first cylinder 70 and the second cylinder 80 is that the discharge capacity of 65%, the second cylinder is 35%.Thus, the refrigerating capacity of 100 modal representations 100%, the refrigerating capacity of 65 modal representations 65%.
All the other are not stated part and see embodiment 1, no longer repeat.
Embodiment 4
In the present embodiment 4 be in the Application Example 1 disclosed technological scheme in single cylinder rotary compressor, as the complete design example of volume controlled rotary compressor of control refrigerating capacity.
In Figure 10, each free main bearing 40 of the upper and lower opening section in the second slide plate chamber 83 and supplementary bearing 50 are airtight.The pressure that is connected to the rear portion in the second slide plate chamber 83 switches pipe 24 and connects the three-way valve that is provided in housing 11 outsides, three-way valve not shown in FIG..
On the second slide plate 82 rearward end sliding blade spring 86 is installed, and is processed with the spring eye 87 that sliding blade spring 86 can be stretched.In addition, be subjected to indent 91 and first more easily configured by indent 90 (illustrating among Fig. 2) in order to make second, the position of sliding blade spring 86 and spring eye 87 and the center-biased of the second slide plate 82.In addition, first is subjected to indent 90 to be communicated to spring eye 87 by connectivity slot 93, therefore equates with the pressure in the second slide plate chamber 83.
In the time of during the second slide plate 82 moves in the compressor operation, when perhaps compressor stops, by sliding blade spring 86 front end of the second slide plate 82 is pushed on the periphery of the second piston 81.But, if when the pressure in the second slide plate chamber 83 switches to low-pressure lateral pressure, be subjected to the pressure difference Δ p of indent that the second slide plate 82 is stopped in vane slot by two.Figure 10 represents state like this.
In embodiment 4, because the second slide plate with sliding blade spring 86, can begin the compression running simultaneously with single cylinder rotary compressor starting.But, because the active force that will make the second slide plate 82 stop needing with sliding blade spring becomes large.But, by open among the embodiment 1 enlarged-area that is subjected to indent shown with the effect power that stops that increases by the second slide plate 82 also be not difficult.
In addition, in single cylinder rotary compressor with slide plate Control function of the present invention, by stopping the second slide plate 82, perhaps remove and stop the second slide plate 82 and control refrigerating capacity in the running, owing to need not rely on very much pressure difference Δ p, the on/off control of running becomes easy.
All the other are not stated part and see embodiment 1, no longer repeat.
Claims (9)
1. rotary compressor, be provided with compressing mechanism (30) and motor (35) in the housing (11), compressing mechanism (30) comprises the second cylinder (80), bent axle (31) drives the second piston (81) and do eccentric revolution in the compression chamber of the second cylinder (80), the 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 connect with the periphery of the second piston (81), be arranged on the second airtight slide plate chamber (83) on the second cylinder (80) and take in the rear end of the second slide plate (82), main bearing (40) and supplementary bearing (50) are used for supporting bent axle (31), the pressure switching mechanism switches the pressure in the second slide plate chamber (83) between high side pressure and low-pressure lateral pressure, it is characterized in that also comprising device for controlling sliding vane, this device for controlling sliding vane is included on two relative movement faces on the second slide plate (82) and is respectively arranged with the first compression zone and the second compression zone, wherein, the pressure of the first compression zone equates with the pressure in the second slide plate chamber (83), and the pressure of the second compression zone equates or approximately equal with high side pressure usually; The pressure switching mechanism switches to low-pressure lateral pressure by the pressure with above-mentioned the second slide plate chamber (83) for high side pressure, perhaps switch to high side pressure by the pressure with above-mentioned above-mentioned the second slide plate chamber (83) for low-pressure lateral pressure, and make the action of the second slide plate (82) stop or removing stopping.
2. rotary compressor according to claim 1 is characterized in that the area of the first compression zone in the described device for controlling sliding vane and the second compression zone is substantially equal.
3. rotary compressor according to claim 2, two relative movement faces that it is characterized in that the second slide plate (82) in the described device for controlling sliding vane comprise the first moving surface (S) and the second moving surface (T) that is positioned at the side, the first compression zone is subjected to indent (90) for being arranged on first on the first moving surface (S), and the second compression zone is subjected to indent (91) for being arranged on second on the second moving surface (T); Also be provided with on the first moving surface (S) and be connected by indent (90) with first and to the connectivity slot (93) of the second slide plate chamber (83) opening, pressure hole (92) from the outside of the second cylinder (80) to the second slide plate cell wall (89) perforate of the second vane slot, when at least the second slide plate (82) will be static in the second vane slot, pressure hole (92) and second was communicated with by indent (91).
4. rotary compressor according to claim 3 is characterized in that being provided with on described the second cylinder (80) the second inlet hole (84) and first row pore (53);
Wherein, first is subjected to indent (90) to be arranged on a side of the second inlet hole (84), and second is subjected to indent (91) and pressure hole (92) to be arranged on a side of first row pore (53); Perhaps, second is subjected to indent (91) and pressure hole (92) to be arranged on a side of the second inlet hole (84), and first is subjected to indent (90) to be arranged on a side of first row pore (53).
5. rotary compressor according to claim 2, it is characterized in that described device for controlling sliding vane be included in arrange respectively in the first slide plate cell wall (88) of the second vane slot and the second slide plate cell wall (89) the 3rd be subjected to indent (101) and the 4th to be subjected to indent (102), wherein, the first compression zone is the 3rd to be subjected to indent (101), and the second compression zone is the 4th to be subjected to indent (102);
The 3rd is subjected to indent (101) being communicated with the second slide plate chamber (83) by connectivity slot (93), the 4th be communicated with pressure hole (92) towards the bottom perforate of the second cylinder (80) by indent (102), wherein, connectivity slot (93) is arranged in the first moving surface (S) on the second slide plate (82), perhaps, connectivity slot (93) is arranged in the first slide plate cell wall (88).
6. rotary compressor according to claim 2, two relative movement faces that it is characterized in that the second slide plate (82) in the described device for controlling sliding vane comprise and are positioned at the 3rd moving surface (U) and the 4th moving surface (V) up and down, the first compression zone is subjected to indent for being arranged on the 5th on the 3rd moving surface (U), and the second compression zone is subjected to indent for being arranged on the 6th on the 4th moving surface (V).
7. rotary compressor according to claim 2, two relative movement faces that it is characterized in that the second slide plate (82) in the described device for controlling sliding vane comprise and are positioned at the 3rd moving surface (U) and the 4th moving surface (V) up and down, the 7th are subjected to indent and the 8th to be subjected to indent respectively on two faces that join with the 3rd moving surface (U) and the 4th moving surface (V) in the second vane slot.
8. according to claim 1 to 7 arbitrary described rotary compressors, it is characterized in that in the twin-tub rotation-type compressor that is made of two cylinders, any one in these two cylinders comprises device for controlling sliding vane.
9. according to claim 1 to 7 arbitrary described rotary compressors, it is characterized in that in the single cylinder rotary compressor that is made of single cylinder, this single cylinder comprises device for controlling sliding vane.
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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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| CN201210079463.2A CN103321907B (en) | 2012-03-22 | 2012-03-22 | Rotary compressor |
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| CN103321907B CN103321907B (en) | 2016-07-06 |
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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 |
| CN107237754A (en) * | 2017-08-07 | 2017-10-10 | 珠海格力电器股份有限公司 | A kind of rotor compressor and compression method with gas supplementary structure |
| EP3677783A1 (en) | 2019-01-03 | 2020-07-08 | Lg Electronics Inc. | Rotary compressor |
| CN112324514A (en) * | 2020-11-13 | 2021-02-05 | 珠海格力电器股份有限公司 | Expander and air conditioner |
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| CN101403545A (en) * | 2008-10-31 | 2009-04-08 | 广东美芝制冷设备有限公司 | Heat pump type air conditioner |
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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 |
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| WO2019029264A1 (en) * | 2017-08-07 | 2019-02-14 | 格力电器（武汉）有限公司 | Rotor compressor having air supply structure and compression method |
| 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 |
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| CN112324514A (en) * | 2020-11-13 | 2021-02-05 | 珠海格力电器股份有限公司 | Expander and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN103321907B (en) | 2016-07-06 |
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