CN100532856C - Rotary type compressor exhaust valve device and its control method - Google Patents
Rotary type compressor exhaust valve device and its control method Download PDFInfo
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- CN100532856C CN100532856C CNB2007100315444A CN200710031544A CN100532856C CN 100532856 C CN100532856 C CN 100532856C CN B2007100315444 A CNB2007100315444 A CN B2007100315444A CN 200710031544 A CN200710031544 A CN 200710031544A CN 100532856 C CN100532856 C CN 100532856C
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- intermediate clapboard
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- 238000000034 method Methods 0.000 title claims description 20
- 230000030279 gene silencing Effects 0.000 claims description 42
- 230000006835 compression Effects 0.000 claims description 34
- 238000007906 compression Methods 0.000 claims description 34
- 230000000694 effects Effects 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000010349 pulsation Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 60
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000007599 discharging Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
- F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
- F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides an exhaust valve device of a rotary compressor. The invention includes two or more cylinders arranged in a shell body, a piston and a sliding vane which are respectively arranged in the cylinders, and a main bearing and an assistant bearing which support an eccentric crankshaft. Two or more eccentric parts are arranged on the eccentric crankshaft, an intermediate diaphragm is arranged between the upper cylinder and the lower cylinder, and the intermediate diaphragm is made up of one or more boards. An exhaust cavity for holding the exhaust valve is arranged on the intermediate diaphragm, and an upper exhaust hole and a lower exhaust hole are arranged on the intermediate diaphragm. The exhaust valve includes two exhaust valve plates respectively arranged on the upside and the underside, and a limit board arranged on the middle position. The free ends of the upper and the lower exhaust valve plates are respectively pressed on the upper and the lower exhaust holes. The limit board presents a V shape, the side face of the limit board is pressed on the exhaust valve plate, the two ends of the limit board with the upper and the lower exhaust valve plates are respectively fixed in the cavity of the intermediate diaphragm, and the middle part is arranged near the upper and the lower exhaust holes. The invention has the advantages that the manufacturing cost is low, the noise is low, and the working performance is reliable.
Description
Technical field
The present invention relates to the discharge valve apparatus and the controlling method thereof of a kind of rotary compressor, particularly a kind of rotary compressor.
Background technique
Twin-tub rotation-type compressor is to become known technology before nineteen sixty on USP (U. S. Patent), but realizes formally that in Japan commercialization is in 1988, and twin-tub rotation-type technology and converter technique are brought tremendous influence to whole industry.In the period of about afterwards 20, twin-tub rotation-type compressor is applied in the senior domestic air conditioner on the one hand, on the other hand owing to hang down vibration, high reliability, be fit to volume controlled and factor such as energy-conservation not only is used in the domestic air conditioner, but also extended being applied in the Air Conditioner, and constantly popularized, also have very development prospect from now on.
But the application study of the central diaphragm on twin-tub rotation-type compressor does not make progress fully.Present dividing plate is to be clipped between two cylinders, only has the function of two cylinder compression chambers of sealing.Accompanying drawing 1 is the cases of design of now the most general twin-tub rotation-type compressor: requisite dividing plate is clipped in and between upper and lower two cylinders 102.1 and 102.2 the cylinder compression chamber is sealed, compressed pressurized gas flow to compressor by being arranged on after discharge valve apparatus 105.1 and 105.2 on main bearing 103 and the supplementary bearing 104 discharges by first muffler and second muffler 106.1 and 106.2 in each cylinder.Present twin-tub rotation-type compressor we can say it is to have followed above-mentioned design all.Discharge valve apparatus is by being opened on exhaust port on the cylinder compression chamber, forming according to the outlet valve of compression chamber pressure switch exhaust port and limiting board three parts of restriction exhaust valve opening.When the designing and arranging pore, to when optimize its basal area, reduce its height as far as possible, otherwise will cause decrease in efficiency.Owing on bearing, be provided with in the design of discharge valve apparatus, the attachment face of control valve unit and the planar section distance that is installed on the cylinder are about 2～3mm, and it not only processes loaded down with trivial details, and can cause the bearing integral rigidity to descend, Performance And Reliability descends, problems such as noise increase.Accompanying drawing 2 is the cases of design of single cylinder rotary compressor, in the machine that corresponding refrigerating capacity is bigger in single cylinder compressor, both sides at main bearing 103 and supplementary bearing 104 all are provided with discharge valve apparatus, yet, for the single cylinder rotary compressor, two discharge valve apparatus can be set on a cylinder like this, thereby improve compressor efficiency, and can prevent that the pressure anomaly that overcompression causes from rising, and improves the reliability of compressor.According to such viewpoint, in order to realize the maximization of twin-tub rotation-type compressor, two discharge valve apparatus need be set on a cylinder, four discharge valve apparatus promptly will be set altogether, cause the compressor volume huge at last, fabricating cost is also than higher.At this situation, many manufacturers have all proposed different solutions with the user, as disclosing the rotary double cylinder compressor that a kind of employing has the central diaphragm of degassing function among the Chinese patent literature CN1676938 A, by rotor, motor and eccentric shaft that motor stator is formed, loam cake, last silencer cover, upper cylinder, lower cylinder, upper rotor part, lower rotor part, following silencer cover, lower cover, lower clapboard, the pump housing of compositions such as upper clapboard is installed in one by cylindrical shell, following outer cover, in the seal container that last outer cover is formed, there is refrigerator oil bottom at seal container, it is characterized in that: two intermediate clapboards are separated into two active chambers with upper and lower air cylinders in compressor, be equipped with the valve seat groove of parts such as relief opening and installation exhaust valve plate on lower clapboard and the upper clapboard, and have a cavity, when specifically using, lower clapboard and upper clapboard are the junction plane use that combines with the B reference level.The last relief opening of the following relief opening of upper cylinder and upper clapboard relief opening that is mated and lower cylinder and the lower clapboard relief opening that is mated are symmetry plane symmetry up and down along the axial junction plane with upper clapboard and lower clapboard of eccentric shaft.Though the rotary double cylinder compressor of this structure can solve exhausting problem to a certain extent, also there is bigger narrow limitation in its making and the application.
Summary of the invention
The object of the present invention is to provide a kind of simple and reasonable, fabricating cost is low, increase intermediate clapboard added value, bearing and intermediate clapboard good rigidly, noise is low, the discharge valve apparatus and the controlling method thereof of the rotary compressor of reliable working performance, to overcome deficiency of the prior art.
Press the discharge valve apparatus of a kind of rotary compressor of this purpose design, comprise two and above cylinder being arranged in the housing, be separately positioned on piston and slide plate in the cylinder, support the master of eccentric crankshaft, supplementary bearing, eccentric crankshaft is provided with two and above eccentric part, be provided with intermediate clapboard between upper cylinder and the lower cylinder, intermediate clapboard is made by the plate more than one or, it is provided with the exhaust cavity of putting outlet valve, intermediate clapboard is provided with upper air-vent and/or following exhaust port, its structure characteristic is that outlet valve comprises and being arranged on, under two exhaust valve plates and middle limiting board, on, the free end of following exhaust valve plate is crimped on respectively, on the following exhaust port, wherein, limiting board is U or V or X font, the side is crimped on the exhaust valve plate, and two ends are respectively with last, the fixed end of following exhaust valve plate is installed in the cavity of intermediate clapboard, and intermediate portion is arranged near last, following exhaust port or be arranged on, between the following exhaust port; Perhaps limiting board is a resilient sheet-like, and one end and upper and lower exhaust valve plate fixed end are with being fixed in the inner chamber of intermediate clapboard, and the other end is hung between the upper and lower outlet valve free end.
Described exhaust valve plate and limiting board stack, be fixed on the intermediate clapboard by rivet or nut, and/or limiting board one end is stub end or the structure that is the R font, and this stub end or the structure that is the R font are arranged near upper and lower exhaust port or are arranged between the upper and lower exhaust port.
Described intermediate clapboard is made up of upper clapboard and lower clapboard, and the part of upper clapboard between last exhaust valve plate free end and fixed end is provided with opening, and/or the part of lower clapboard between following exhaust valve plate free end and fixed end is provided with opening.
Described cylinder compression chamber leads to the exhaust port direction and is provided with the slant cutting edge groove that reduces gas-flow resistance.
Described intermediate clapboard ovalize, two outlet valves are arranged in the cylinder towards the slide plate back, and by-pass hole one end is communicated with exhaust cavity, and the other end is communicated with the slide plate chamber; And/or the screw insertion hole on the intermediate clapboard is along circumferential arrangement, ovalize or oval shape.
Described exhaust cavity top, bottom surface are respectively arranged with upper and lower window portion and upper and lower exhaust port, window portion is arranged on upper and lower exhaust port next door up and down, upper and lower exhaust valve plate and limiting board one end are fixed on the intermediate clapboard, the upper and lower exhaust valve plate the other end is crimped on the upper and lower exhaust port, its middle part is crimped on the window portion, the limiting board the other end is a free end, is arranged between the upper and lower exhaust valve plate the other end.
The angled θ of the assembling axis of described upper and lower discharge valve apparatus is provided with, and perhaps is arranged side by side up and down.
Controlling method by the discharge valve apparatus of a kind of rotary compressor of this purpose design, it is characterized in that clamping the relative angle of two cylinders of intermediate clapboard or the relative position that cylinder bore diameter changes two exhaust ports that are configured in the intermediate clapboard two sides, just can change the relative assembling position of two discharge valve apparatus by change; And/or the two sides of intermediate clapboard inner space has two discharge valve apparatus being made up of exhaust port and outlet valve limiting board middle with being configured in their at least, by utilization to the inside and outside two sides of limiting board, can be with its shared limiting board as two discharge valve apparatus, intermediate clapboard can seal the opening end in slide plate chamber, perhaps by by-pass hole slide plate cavity pressure and exhaust cavity pressure is consistent.
First cylinder is different with the exhaust pressure of second cylinder in the rotary compressor of described two sections compressions, needs to separate exhaust cavity, and then each exhaust cavity all has the function of silencing apparatus.
Described exhaust cavity is made up of two-part, a part is that discharge valve apparatus is installed, another part is the space of discharge valve apparatus forward end, this space has temporarily deposits the gas that will discharge, the gas of different pressures can enter this space, this space also has the effect that slows down the pulsation exhaust sound, is equivalent to silencing apparatus in fact; And/or comprise beyond the space of the exhaust cavity on the intermediate clapboard, on cylinder interior or major and minor bearing, append silencing apparatus at least.
The present invention is not only favourable to duplex cylinder compressor development from now on, and also will make major contribution: can cancel discharge valve apparatus on the compression bearing by the discharge valve apparatus that is arranged on intermediate clapboard inside to the development of multi-cylindrical rotary compressor, thereby improve the rigidity of bearing and the reliability of compressor, can also be to certain contribution that reduces cost, and help optimizing discharge valve apparatus, can be effectively energy-conservation, reduce noise.Independently control valve unit and exhaust cavity are set on dividing plate, and therefore highly beneficial to different design such as the exhaust pressure of two-stage compression system etc., silencing apparatus is built in intermediate clapboard, when it is applied to CO
2The component distortion is little when the extra-high.The present invention can be provided with one or two outlet valves on intermediate clapboard, also can use former discharge valve apparatus simultaneously.It is favourable to maximize for from now on rotary compressor, for the development exemplary application present technique of from now on the rotary compression of many inflators.
Description of drawings
Fig. 1 is the broken section structural representation of prior art twin-tub rotation-type compressor.
Fig. 2 is the broken section structural representation of prior art single cylinder rotary compressor.
Fig. 3 is one embodiment of the invention structural representation.
Fig. 4 is the Y-Y sectional structure schematic representation of Fig. 3.
Fig. 5 analyses and observe local structure for amplifying schematic representation for the Z-Z of Fig. 3.
Fig. 6 looks the structure for amplifying schematic representation for the master of exhaust valve plate.
Fig. 7 is the plan structure schematic representation of Fig. 6.
Fig. 8 is the structure for amplifying schematic representation of first limiting board.
Fig. 9 is the plan structure schematic representation of Fig. 8.
Figure 10 is the structure for amplifying schematic representation of second limiting board.
Figure 11 is the plan structure schematic representation of Figure 10.
Figure 12 is the second example structure schematic representation of Fig. 5.
Figure 13 is the 3rd example structure schematic representation of Fig. 5.
Figure 14 is two cylinder cross-sectional view that relative angle is different.
Figure 15 is the structural representation of the outlet valve of two different mounting points in the different cylinder of two relative angles.
Figure 16 is the sectional view of the configuration status of first discharge valve apparatus and second discharge valve apparatus among Figure 15.
Figure 17 is two structural representations that latter two discharge valve apparatus of cylinder relative angle independently works for a change.
Figure 18 is two discharge valve apparatus structural representations of separate configurations up and down.
Figure 19 is the subassembly structural representation of two parts up and down of intermediate clapboard.
Figure 20 is the plan structure schematic representation of Figure 19.
Broken section structural representation when Figure 21 adopts parts to make for intermediate clapboard.
Figure 22 is the plan structure schematic representation of Figure 21.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Among the figure: 1 is compressor, and 2 is housing, and 3 is compression assembly, 4 is electric machine assembly, and 11 is first cylinder, and 12 is second cylinder, 13 is intermediate clapboard, and 14 is first compression chamber, and 15 is second compression chamber, 16 is first piston, and 17 is second piston, and 18 is first slide plate, 19 is second slide plate, and 20 is eccentric crankshaft, and 21 is main bearing, 22 is supplementary bearing, and 23 is first eccentric part, and 24 is second eccentric part, 25 is last bolt, and 26 are following bolt, and 31 is exhaust cavity, 32 is first discharge valve apparatus, and 33 is second discharge valve apparatus, and 34 is first suction pipe, 35 is second suction pipe, and 36 is second silencing apparatus, and 37 is the main bearing suction port, 41 is upper clapboard, 42 is lower clapboard, and 44.1 is first exhaust port, and 44.2 is second exhaust port, 45 is exhaust valve plate, 46 is first limiting board, 46 ' be second limiting board, 46 " be the 3rd limiting board; 46 ' " be the 4th limiting board, 46.1 be the 5th limiting board, 46.2 is the 6th limiting board, 47 is undercut groove, 48 is rivet, 51 is first exhaust cavity, and 52 is second exhaust cavity, and 53 is dividing plate, 54 is first intercommunicating pore, 55 is second intercommunicating pore, and 61 is screw, and 62 is the slide plate chamber, 63 is window portion, 64 is screw insertion hole, and 65 is pin, and 71 is first surface plate, 75 is intercommunicating pore, 101 is intermediate clapboard, and 102.1 is upper cylinder, and 102.2 is lower cylinder, 103 is main bearing, 104 is supplementary bearing, and 105.1 is first outlet valve, and 105.2 is second outlet valve, 106.1 be first muffler, 106.2 is second muffler.
Referring to Fig. 3-Fig. 5, for present twin-tub rotation-type compressor uses this motion technology, its internal structure as shown in the figure, Fig. 4 is the Y-Y sectional view of Fig. 3, intermediate clapboard 13 is represented by the Z-Z sectional view, is convenient to understand the design of discharge valve apparatus described later like this.Sealed compressor 1 is that the electric machine assembly 4 by the compression assembly 3 of housing 2 inside and compression assembly top assembles.
Compression assembly includes first cylinder 11 and second cylinder 12, these two cylinders centres have been installed intermediate clapboard 13 and sealed first compression chamber 14 and second compression chamber 15, first cylinder and second cylinder interior are equipped with in the vane slot of first piston 16 and second piston, 17, the first cylinders and second cylinder first slide plate 18 and second slide plate 19 are installed.Compression assembly also comprises by the main bearing 21 and the supplementary bearing 22 of the eccentric crankshaft 20 that drives two pistons, support eccentric crankshaft and forming.
Main compression member above-mentioned can final operation by five groups on nut 25 and following nut 26 assemble respectively from main bearing side and supplementary bearing side.Go up bolt 25 for five and at first main bearing 21 is connected with first cylinder 11 together with second silencing apparatus 36, five following nuts 26 are connected supplementary bearing 22 with intermediate clapboard 13 with second cylinder 12 from the supplementary bearing side with first cylinder 11 then.
So intermediate clapboard is by two cylinder clamping, and link together with cylinder securely.Like this, the state that all compression critical pieces all link together just is referred to as compression assembly 3.Intermediate clapboard 13 is in the centre of these critical pieces, remaining part is combined as a whole, and will be highly beneficial aspect reduction noise and raising sealing effect as described later.
In the design proposal of Fig. 3 and Fig. 4, intermediate clapboard 13 is made of two flat piece, and they are called upper clapboard 41 and lower clapboard 42 respectively.The intermediate clapboard of this split is normally shaped by sintered alloy, so exhaust cavity 31 required space segments are easy to shape.But present most of intermediate clapboards are whole plates, and inside does not have the space.
Because the height that increases intermediate clapboard can increase the eccentric shaft distance between shafts of compression assembly, thus as the reaction of two cylinder compressions, scratching (or distortion) and can increasing of eccentric crankshaft, all unfavorable to compressor efficiency and reliability.So, pay the utmost attention in this programme on the basis that does not increase the intermediate clapboard height, dispose the design of two groups of discharge valve apparatus.Below Shuo Ming technology contents all is based on this thinking basically.
Among Fig. 4, the gas of discharging from discharge valve apparatus arrives second silencing apparatus 36 by main bearing suction port 37 then at first through first silencing apparatus, and this tandem silencing apparatus has constituted the two-part silencing apparatus, and is better with respect to present muffler system erasure effect.
Though second muffler design in the two-part silencing apparatus among the design in the main bearing side, designs in fact in the supplementary bearing side and also can reach equal effect.Second silencing apparatus can certainly be designed simultaneously in main bearing and supplementary bearing both sides, to increase total silencing apparatus volume.But, the bearing silencing apparatus that is configured in as mentioned above on the bearing is thin-slab construction, and in general its erasure effect is not so good.In this case, be recommended in the new silencing apparatus of planar surface portion design that connects cylinder and intermediate clapboard.Why, be that so will exceed much than the rigidity of bearing silencing apparatus, the effect that reduces noise is also good especially because being built in the silencing apparatus of cylinder is clamped by intermediate clapboard and upper and lower bearing.The silencing apparatus that is built in cylinder is meant the space of designing in the position, plane that is connected of cylinder and intermediate clapboard, when its useful space hour, cylinder can suitably enlarge.Above two sections or three sections silencing apparatuss are to be applicable to the less situation of the built-in first silencing apparatus volume of intermediate clapboard, if enlarged the volume of first silencing apparatus, so probably omit second silencing apparatus.
First discharge valve apparatus 32 and second discharge valve apparatus 33 are made up of first exhaust port 44.1, second exhaust port 44.2, exhaust valve plate 45 and limiting board 46 in the intermediate clapboard respectively among Fig. 4.Because the aperture of exhaust port draws according to displacement volume design, so that the aperture of two exhaust ports does not need is just the same.In addition, played to the slant cutting edge groove 47 of exhaust port direction design in the cylinder compression chamber and reduced to discharge the effect of gas from cylinder compression chamber resistance when exhaust port flows out.
Generally speaking, rotary compressor has with the size of clearance volume and is directly proportional, expansion-loss increases again, the problem that refrigerating capacity descends, so the center of exhaust port is generally designed on the cylinder bore diameter line and the position of close slide plate, because exhaust port is the exhaust passage, so will design relatively goodly greatly a bit, but clearance volume can increase again, so the exhaust aperture needs to optimize.The shape of exhaust port is generally circle, but also uses D font or oval or other polygonal etc. sometimes.Because used forming technique in the scheme of intermediate clapboard configuration exhaust port, the exhaust port of shape is easy to make as mentioned above; On the other hand, the height of exhaust port need reduce in the scope that does not influence rigidity as far as possible, it seems from this point, also is that the design proposal of configuration exhaust port in intermediate clapboard is more favourable.That is, present design has advantage on raising compressor efficiency this point.
As Fig. 4-shown in Figure 5, exhaust valve plate and limiting board stack, by rivet 48 or nut be fixed on the intermediate clapboard parts above.This outlet valve has the function of switch pair pore, and the effect of limiting board is the aperture of control exhaust valve plate, prevents from that exhaust valve plate from opening too muchly to cause that noise increases or the breakage of valve.Here, limiting board 46 as shown in Figure 4 is the technological schemes that belong to new.This limiting board is made up of two thin plates, and the one end is fixed by methods such as rivet or resistance weldings, so can be regarded as a limiting board.If the thickness of intermediate clapboard 13 or highly be H reduces in the design of H at needs so as far as possible, what a limiting board can play the limiting board effect of two outlet valves.If allow to enlarge the design condition of H, as shown in Figure 5, generally can use 2 limiting boards 46, still for the design of a shared limiting board, intermediate clapboard height H size can increase about 1.5 times.
Referring to Fig. 6-Fig. 9, be exhaust valve plate and limiting board specific design scheme.Form a limiting board of U or V font by two limiting boards that constitute, can reach rigidity and improve the above effect of several times, and can reduce the thickness of limiting board.Promptly two discharge valve apparatus can be configured in simultaneously in the narrow like that space of intermediate clapboard.
Referring to Figure 10-Figure 11, be in identical purpose, a slice thin plate bending can be become V or U font as limiting board, limiting board can use the rubber-like material.If during design width C size, make it bigger than the size after packing into before the intermediate clapboard 13 of packing into, just can improve manufacturing.
Because the limiting board among Fig. 6-Figure 11 and the part of outlet valve touch controls aperture are stub end or the structure that is the R font, thus the same with existing limiting board, can the maximum stress of abirritation on outlet valve.
Limiting board is bent into rubber-like U or V font when being installed in the intermediate clapboard, if width C designs smallerly, so not only can improve its manufacturing, and can be securely fixed in together on the assigned position of intermediate clapboard by the elastic force and the outlet valve of limiting board self.So can cancel control valve unit is installed in rivet or nut on the intermediate clapboard, still, moves in order to prevent the limiting board along continuous straight runs, be under the state in less gap in the insertion groove.
Referring to Figure 12-Figure 13, in the present design with limiting board as a resilient surface plate, the design of this limiting board is the simplest, but is easy in narrow space two discharge valve apparatus of configuration most.In the reciprocal compressor end of Aspirating valves packed into the step place, U font plane of cylinder upper end as limiting board.From the use experience for many years of reciprocal compressor, the plane limiting board of this spline structure is used for rotary compressor and also can ensures its reliability, and need not worry.Figure 13 is the design proposal that plane limiting board is installed in the outlet valve front end, has the function suitable with Figure 12.These all are based on the design proposal of the limiting board that the design philosophy that as far as possible reduces the intermediate clapboard height H enumerates.
The technology about discharge valve apparatus configuration aspect that next will illustrate is based on the technology of brand-new design thought.
Two cylinders of at present all two-cylinder rotary compressors are all assembled in the same phase angle.That is, the slide plate of upper and lower two cylinders, exhaust port and suction port are all fixing in same position.For built-in two discharge valve apparatus in the thin partially intermediate clapboard of thickness, if exhaust port is the same with present two-cylinder rotary compressor, upper and lower is in same position, the less problem of degrees of freedom that will have design, particularly the height space when the configuration limiting board diminishes, thereby the exhaust valve open open height when causing vent openings reduces, and causes discharging the increase of gas flow resistance, compressor efficiency reduction at last.
But design proposal as shown in figure 14 can solve this problem.In this design proposal because the relative angle difference of cylinder, so can change the position of two exhaust ports.Figure 14 is the configuration of two cylinders seeing from the supplementary bearing side.Promptly with respect to the second following cylinder, the relative angle difference of the first top cylinder.This different relative angle can be known by the arrangement angles θ of two slide plates.Therefore the position of first exhaust port 44.1 of first cylinder 11 is with respect to second exhaust port, 44.2 positions of second cylinder 12, the angle difference of θ.So change the position of two exhaust ports, see Figure 15, just can change the assembling position of two discharge valve apparatus, and each discharge valve apparatus does not have interference yet in configuration.First discharge valve apparatus 32 and second discharge valve apparatus 33 play a role as the control valve unit of first cylinder 11 and second cylinder 12 respectively, and in the design proposal of Figure 15, nearly all part of intermediate clapboard can play a role as first silencing apparatus.Silencing apparatus volume under this scheme is enough big, therefore can save second silencing apparatus 36 among Fig. 4.
Figure 16 is the sectional view of the configuration status of first discharge valve apparatus 32 and second discharge valve apparatus 33 among explanation Figure 15, and the 5th adjacent limiting board 46.1 and 46.2 mutual noninterferences of the 6th limiting board are so control valve unit is very easy to design.
In above design, intermediate clapboard is an approximate ellipsoidal, so have the advantage that control valve unit configuration degrees of freedom increases.In the design proposal that changes the cylinder relative angle, the phase difference of the gas compression angle of two cylinders can postpone the θ degree with respect to 180 former degree, but the compressor resultant vibration that causes thus can increase hardly, can ignore.
Figure 17 is the application case that changes two cylinder relative angles, represents that two discharge valve apparatus independently work.If first cylinder is different with the exhaust pressure of second cylinder in the rotary compressor of two sections compressions, need to separate exhaust cavity, first exhaust cavity 51 shown in Figure 17 and second exhaust cavity 52 separate by dividing plate 53 so, and each exhaust cavity all has the function of silencing apparatus.
Say gas channel here, the low-pressure gas that sucks from first suction pipe 34 is compressed into intermediate-pressure gas at second cylinder and is drained into first exhaust cavity 51, flows out to compressor from first intercommunicating pore 54 then.The intermediate-pressure gas of enclosure interior is inhaled into first cylinder, then is compacted into the pressurized gas that pressurized gas are discharged in second exhaust cavity, 52, the second exhaust cavitys and flows in the system of compressor outside by second intercommunicating pore 55.Therefore, be intermediate pressure in first exhaust cavity 51 and the housing, second exhaust cavity 52 is a high side pressure.
Two discharge valve apparatus are pressed the flat state separate configurations among Figure 18, can be as shown in Figure 14, and separate configurations up and down.Intermediate clapboard in this design proposal is by three parts groups: in the middle of promptly surface plate 71 is clipped in upper and lower two parts, make two discharge valve apparatus separate configurations.The phase angle that in this design, not necessarily needs to change two cylinders.In addition, with respect to the configuration under Figure 17 midplane state, the intermediate clapboard height in this scheme is higher, and still, it has the advantage that can enlarge the silencing apparatus volume, and the surface plate in this design proposal 71 also has the effect of limiting board.
On the basis of the rotary compressor of above-mentioned two sections compressions, need in the rotary compressor of volume-variable or the rotary compressor of housing low pressure the slide plate back is formed slide plate chamber 62, and sealing fully, making the slide plate chamber is high pressure.Slide plate chamber 62 is as Figure 14 or Fig. 3 and shown in Figure 4.At this moment, intermediate clapboard is not discoideus as among Fig. 4, and will be designed to Figure 15 or approximate ellipsoidal shown in Figure 17, and sealing slide plate chamber, to reach the effect of sealing.
Therefore, the intermediate clapboard in sealing slide plate chamber can be configured in two discharge valve apparatus in the cylinder to slide plate back direction, in other words is exactly along oval-shaped long axis direction.Intermediate clapboard is designed in the nearly oval-shaped design, when the pressure in exhaust cavity and slide plate chamber 62 is identical, need not seals the slide plate chamber, but design the hole that connects to the slide plate chamber from exhaust cavity, i.e. by-pass hole is consistent slide plate cavity pressure and exhaust cavity pressure.In addition, also the slide plate chamber can be used as the gas channel that comes out from exhaust cavity.
Above description of contents by changing the relative setting angle of two cylinders, be convenient to design two control valve units, and two control valve units can use independently also.But, also can adopt the relative setting angle that does not change two cylinders as its replacing method, and by changing the method for two cylinder bore diameters.Though this method exists side by side at two exhaust ports of same phase angle of cylinder, because the length difference of cylinder bore diameter, so exhaust port does not interfere with each other.
If the intermediate clapboard of built-in two discharge valve apparatus changes the intermediate clapboard of Fig. 1 into, a cylinder has just had upper and lower two discharge valve apparatus so.Promptly first cylinder 11 has disposed a discharge valve apparatus respectively at main bearing 3 and 13 two positions of intermediate clapboard.Like this, a cylinder has two discharge valve apparatus, helps the volume of cylinder that we enlarge two-cylinder rotary compressor, can make rotary compressor further realize maximizing by increasing control valve unit, also further enlarges its application area.
The design that the technical program points out us can carry out the above multi-cylindrical rotary compressor of three cylinders, promptly three cylinder rotary compressors need two intermediate clapboards.But according to former technology, directly the upper and lower cylinder that connects main bearing and supplementary bearing can carry out the design of discharge valve apparatus, middle cylinders between upper and lower cylinder can not be carried out valve device design, a this fated difficult problem can solve easily by the technological scheme of configuration control valve unit in intermediate clapboard now.
Below all be with in the intermediate clapboard configuration two discharge valve apparatus be prerequisite, but in the intermediate clapboard configuration discharge valve apparatus design prospect is also arranged very much.If dispose a discharge valve apparatus such as the intermediate clapboard among Fig. 1, there is one just can cancel discharge valve apparatus in so upper and lower two bearings, if and only disposed a discharge valve apparatus in the intermediate clapboard, the design of intermediate clapboard inside would be just free more so.
The manufacture method of intermediate clapboard is described at last, and intermediate clapboard design can be by two-part as described in Figure 5: upper clapboard 41 and lower clapboard 42 constitute, and parts that also can a plane shape of usefulness as described below design.
Below recommend two parts to pass through the method for sintered alloy moulding respectively.In two parts, install before the discharge valve apparatus, at first plain grinding is carried out on the two sides of each plane shape parts, then discharge valve apparatus is installed in the parts of plane shape, then as embedded screw 61 assemblings of two intermediate clapboard parts after Figure 19 and the discharge valve apparatus shown in Figure 20 installation with 2～6.This screw also can use rivet to replace, but should guarantee that embedded screw or rivet can not fly out from the intermediate clapboard that assembles.
Generally, even if the assembling of intermediate clapboard has been finished,, need under the state after this assembling, carry out plain grinding to intermediate clapboard once more so if the intermediate clapboard above and below parallelism after the assembling does not satisfy specification.Because discharge valve apparatus installs when afterwards intermediate clapboard being carried out plain grinding, grinding powder and grinding fluid may be sneaked in the inside of the exhaust cavity or first silencing apparatus, at this moment need to clean by the intercommunicating pore in the intermediate clapboard.If intermediate clapboard is provided with two intercommunicating pores, clean just relatively easy, if having only the intercommunicating pore of a side also to be fine as cleaning the hole, can be arranged in the final inspection of intermediate clapboard as for the operation that control valve unit is installed after.Therefore, after recommending in advance outlet valve and limiting board be assembled into one, more whole assembly is inserted by the hole of designing in the intermediate clapboard, to finish all assemblings.
When without the sintered alloy moulding, also can adopt the sheet metal parts to make intermediate clapboard by soldering, this making method is not used links such as screw.After promptly at least two flat components will carry out soldering and finish the making of intermediate clapboard, carry out plain grinding again, at last the assembly that assembles is inserted from the hole of intermediate clapboard.
If intermediate clapboard uses parts to make, see Figure 21 and Figure 22, so, the exhaust cavity 31 of configuration discharge valve apparatus can carry out machining.The bottom mechanical processing of open row air valve device is very easy to, and is used for the window portion 63 of open row air valve device bottom because the sealing of cylinder planar surface portion can prevent gas leakage.Be that intermediate clapboard in the technology that proposes of this programme is not to be divided into 2 parts.Exhaust valve component in this case in the end operation is packed into.
In the design for Figure 14 of the relative setting angle that changes two cylinders and Figure 15, suggestion is necessary as shown in Figure 22 the screw insertion hole 64 of intermediate clapboard is designed to ellipse or oval shape or directly enlarges the aperture along sense of rotation.Owing to need to change the size of exhaust port in the rotary compressor according to displacement volume, promptly need to change the size of relative setting angle θ, in this case, if the setting angle θ of intermediate clapboard is free relatively, machine that intermediate clapboard just can be tackled multiple different displacements so.
In addition, the mounting point of intermediate clapboard generally is to locate in the planar surface portion of cylinder with two pins 65 as shown in figure 22, and different machines can change configuration by two pins intermediate clapboard correctly is installed.
In order to promote rotary compressor better in the future, two cylinders or multi-cylindrical rotary compressor are all placed high hopes, still, the maximum technical task of multi-cylindrical rotary compressor is the configuration that is discharge valve apparatus.Technological scheme provided by the invention is exactly in order to address this problem, and has greatly improved the surcharge of intermediate clapboard.That is: provide the concrete grammar of built-in one or two control valve unit of intermediate clapboard and silencing apparatus.In the discharge valve apparatus design of present two-cylinder rotary compressor, can clearance volume be reduced by exhaust port, be convenient to carry out the optimal design of exhaust port, improve compressor efficiency.Even the quantity of cylinder increases, the design of control valve unit is also fairly simple, for road has been paved in the design of the many inflators rotary compressor more than two cylinders, and can cancel the control valve unit on main bearing and the supplementary bearing, reduces manufacture cost.Because the intermediate clapboard of two-cylinder rotary compressor often uses the sintered alloy moulding, if but control valve unit and silencer component are shaped by the technology among the present invention, just needing to append machinery has hardly reprocessed, combine with the control valve unit of present use, a cylinder can dispose two groups of control valve units.We can realize that two-cylinder rotary compressor maximizes by such prompting.
The present invention has superiority on the application facet in two sections different compression type compressors of exhaust pressure.Intermediate clapboard is assembled under by the state of upper and lower two cylinders and the clamping of major and minor bearing, as its direct result is because the pulsation sound that the cylinder exhaust causes can be relayed in the exhaust cavity and silencing apparatus of intermediate clapboard, absorbed by rigid elements such as cylinder and bearings, thereby help reducing noise.Though intermediate clapboard is made of upper and lower two parts, its sealing is very good.It is also all very suitable that this design feature seals exhaust chamber and silencing apparatus two sections compressions or housing low pressure formula rotary compressor etc. fully to needs.
Claims (9)
1. the discharge valve apparatus of a rotary compressor, comprise two and above cylinder being arranged in the housing (2), be separately positioned on piston and slide plate in the cylinder, support the master of eccentric crankshaft (20), supplementary bearing (21) and (22), eccentric crankshaft is provided with two and above eccentric part, be provided with intermediate clapboard between upper cylinder and the lower cylinder, intermediate clapboard is made by the plate more than one or, it is provided with the exhaust cavity of putting outlet valve, intermediate clapboard is provided with upper air-vent and/or following exhaust port, it is characterized in that intermediate clapboard is provided with discharge valve apparatus and following discharge valve apparatus, the angled θ of the assembling axis of last discharge valve apparatus and following discharge valve apparatus is provided with, perhaps intermediate clapboard is provided with discharge valve apparatus and following discharge valve apparatus, last discharge valve apparatus and following discharge valve apparatus are arranged side by side, last discharge valve apparatus and the shared limiting board of following discharge valve apparatus, this limiting board is a resilient sheet-like, following exhaust valve plate fixed end in last exhaust valve plate in one end and the last discharge valve apparatus and the following discharge valve apparatus is with being fixed in the inner chamber of intermediate clapboard, and the other end is hung between the free end of exhaust valve plate and following exhaust valve plate.
2. the discharge valve apparatus of rotary compressor according to claim 1, it is characterized in that the described exhaust valve plate and/or following exhaust valve plate and limiting board gone up stacks, by rivet (48) or be bolted on the intermediate clapboard, and/or limiting board one end is stub end or the structure that is the R font, and this stub end or the structure that is the R font are arranged near upper and lower exhaust port or are arranged between the upper and lower exhaust port.
3. the discharge valve apparatus of rotary compressor according to claim 1, it is characterized in that described intermediate clapboard is made up of upper clapboard (41) and lower clapboard (42), the part of upper clapboard between last exhaust valve plate free end and fixed end is provided with opening, and/or the part of lower clapboard between following exhaust valve plate free end and fixed end is provided with opening.
4. the discharge valve apparatus of rotary compressor according to claim 1 is characterized in that the cylinder compression chamber of described cylinder leads to upper air-vent and/or descends the exhaust port direction to be provided with the slant cutting edge groove (47) that reduces gas-flow resistance.
5. the discharge valve apparatus of rotary compressor according to claim 1 is characterized in that described intermediate clapboard ovalize, and two outlet valves are arranged in the cylinder towards slide plate back direction, promptly along oval-shaped long axis direction; Connect, make an end of the by-pass hole that slide plate cavity pressure and exhaust cavity pressure is consistent to be communicated with exhaust cavity from exhaust cavity to the slide plate chamber, its other end is communicated with slide plate chamber (62); And/or the screw insertion hole on the intermediate clapboard (64) is along circumferential arrangement, ovalize or oval shape.
6. the discharge valve apparatus of rotary compressor according to claim 1, it is characterized in that described exhaust cavity top, bottom surface are respectively arranged with upper and lower window portion and upper and lower exhaust port, window portion is arranged on upper and lower exhaust port next door up and down, upper and lower exhaust valve plate and limiting board one end are fixed on the intermediate clapboard, the upper and lower exhaust valve plate the other end is crimped on the upper and lower exhaust port, its middle part is crimped on the window portion, the limiting board the other end is a free end, is arranged between the upper and lower exhaust valve plate the other end.
7. the controlling method of the discharge valve apparatus of a rotary compressor as claimed in claim 1, it is characterized in that clamping the relative angle of two cylinders of intermediate clapboard or the relative position that cylinder bore diameter changes two exhaust ports that are configured in the intermediate clapboard two sides, just can change the relative assembling position of two discharge valve apparatus by change; And/or the two sides of intermediate clapboard inner space has two discharge valve apparatus being made up of exhaust port and outlet valve limiting board middle with being configured in their at least, by utilization to the inside and outside two sides of limiting board, can be with its shared limiting board as two discharge valve apparatus, intermediate clapboard can seal the opening end in slide plate chamber, perhaps by by-pass hole slide plate cavity pressure and exhaust cavity pressure is consistent.
8. the controlling method of the discharge valve apparatus of rotary compressor according to claim 7, it is characterized in that first cylinder in described two cylinders is different with the exhaust pressure of second cylinder, need to separate exhaust cavity, then each exhaust cavity all has the function of silencing apparatus.
9. according to the controlling method of the discharge valve apparatus of claim 7 or 8 described rotary compressors, it is characterized in that described exhaust cavity is made up of two-part, a part is that discharge valve apparatus is installed, another part is the space of discharge valve apparatus forward end, this space has temporarily deposits the gas that will discharge, the gas of different pressures can enter this space, and this space also has the effect that slows down the pulsation exhaust sound, is equivalent to silencing apparatus in fact; And/or comprise beyond the space of the exhaust cavity on the intermediate clapboard, on cylinder interior and/or major and minor bearing, silencing apparatus is set.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100315444A CN100532856C (en) | 2007-11-17 | 2007-11-17 | Rotary type compressor exhaust valve device and its control method |
| PCT/CN2008/000292 WO2009062366A1 (en) | 2007-11-17 | 2008-02-03 | A discharge valve device of a rotary compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100315444A CN100532856C (en) | 2007-11-17 | 2007-11-17 | Rotary type compressor exhaust valve device and its control method |
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| CN100532856C true CN100532856C (en) | 2009-08-26 |
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| CN102052318A (en) * | 2009-11-04 | 2011-05-11 | 株式会社电装 | Compressor |
| CN102235360A (en) * | 2010-05-07 | 2011-11-09 | 广东美芝制冷设备有限公司 | Double-cylinder rotary compressor |
| CN101852207A (en) * | 2010-05-26 | 2010-10-06 | 珠海格力电器股份有限公司 | Duplex-cylinder rotary compressor |
| CN102748289A (en) * | 2011-04-19 | 2012-10-24 | 广东美芝制冷设备有限公司 | Double-cylinder rotary compressor |
| JP6022247B2 (en) * | 2011-09-29 | 2016-11-09 | 東芝キヤリア株式会社 | Hermetic compressor and refrigeration cycle apparatus |
| CN103291620B (en) * | 2012-02-24 | 2015-12-02 | 广东美芝制冷设备有限公司 | Multi-cylindrical rotary compressor and controlling method thereof |
| CN102562537A (en) * | 2012-03-23 | 2012-07-11 | 松下·万宝(广州)压缩机有限公司 | Compressor |
| ITTO20121023A1 (en) * | 2012-11-28 | 2014-05-29 | Vhit Spa | FLEXIBLE LAMINATE VALVE |
| CN103925219B (en) * | 2014-04-25 | 2017-02-22 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN106151036B (en) * | 2015-04-27 | 2018-10-02 | 珠海格力电器股份有限公司 | Compressor pump component and compressor with it |
| WO2016179813A1 (en) * | 2015-05-13 | 2016-11-17 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating device having same |
| CN105736374B (en) * | 2016-02-01 | 2019-02-26 | 珠海格力电器股份有限公司 | Compressor |
| CN108331755B (en) * | 2018-02-08 | 2023-11-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body assembly and compressor with same |
| CN110630503A (en) * | 2018-06-25 | 2019-12-31 | 上海海立电器有限公司 | Compressor and exhaust structure and exhaust method thereof |
| CN109209883A (en) * | 2018-11-21 | 2019-01-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly, three cylinder compressors |
| CN110131137A (en) * | 2019-05-28 | 2019-08-16 | 珠海凌达压缩机有限公司 | A kind of baffle, valve member, compressor and air-conditioning |
| CN110617220B (en) * | 2019-10-21 | 2023-10-24 | 西安交通大学 | Horizontal double-cylinder enthalpy-increasing rotary compressor for electric automobile air conditioner and working method |
| CN116480820A (en) * | 2023-05-31 | 2023-07-25 | 安徽杰博恒创航空科技有限公司 | Compressor exhaust valve and rotor piston compressor |
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| WO2009062366A1 (en) | 2009-05-22 |
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