CN105805003B - Multi-cylinder rotary compressor and rotary compressor - Google Patents
Multi-cylinder rotary compressor and rotary compressor Download PDFInfo
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- CN105805003B CN105805003B CN201610126102.7A CN201610126102A CN105805003B CN 105805003 B CN105805003 B CN 105805003B CN 201610126102 A CN201610126102 A CN 201610126102A CN 105805003 B CN105805003 B CN 105805003B
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- slide plate
- cylinder
- pressure
- permanent
- chamber
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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
- 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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- 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
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
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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
Abstract
The invention discloses a kind of multi-cylinder rotary compressor and rotary compressor.Multi-cylinder rotary compressor includes Dual-mode compression mechanism, and Dual-mode compression mechanism includes two cylinders and two plate shaped slide plates.Each cylinder is provided with vane slot, and vane slot rear end side possesses slide plate chamber, possesses permanent-magnet pieces in one of slide plate chamber, and the pressure at expulsion of the steam vent of the cylinder of the pressure of the slide plate chamber provided with permanent-magnet pieces with not setting permanent-magnet pieces is identical.Using steam vent pressure at expulsion and suction hole pressure of inspiration(Pi) pressure difference and permanent-magnet pieces to the suction of slide plate so that the contact slide of corresponding with permanent-magnet pieces slide plate and piston stops or released to stop.According to the multi-cylinder rotary compressor of the present invention, it is possible to achieve the operation of two cylinders or a cylinder operation, it is simple in construction, cost is relatively low and control is simple.
Description
Technical field
The present invention relates to compressor field, more particularly, to a kind of multi-cylinder rotary compressor and rotary compressor.
Background technology
Air conditioner and refrigerator are begun to pass through if transition operation area reaches stable operation zone from startup, because refrigeration is followed
The reduction of loop system load, speed-changing rotation formula compressor reduce rotating speed.For example 25rps is dropped in single casing or twin-tub drops to
15rps minimum speed, reduce the control of compressor shutdown number.
During the time-bands such as air conditioner and refrigerator that air-conditioning or cooling load decline are run at dead of night, pass through compressor
Intermitten operation maintains temperature.The long operational time shared by intermitten operation in underrun between 1 year, turn into reduce APF and
The main reason for air conditioning comfortableness, Leng KURA qualities.Turn into the problem of serious particularly in constant speed rotary compressor.
In addition, if further reducing above-mentioned rotating speed in speed-changing rotation formula compressor, due to the fuel feeding of centrifugal oil pump
Energy problem, the reliability and compression efficiency of compressor decline, and vibration can increase.Therefore, need to advise in underrun
Keep away intermitten operation.
In the prior art in order to evade intermitten operation, the control mode of the volume-variable of compressor is taken, but it is existing
Volume-variable control mode is the triple valve by being provided with the slide plate chamber after being connected to sealing, makes slide plate chamber in high-low pressure
Between switch over, not only component cost increase, control can also complicate.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.
Therefore, the present invention proposes a kind of multi-cylinder rotary compressor, two cylinder operations or a cylinder operation are realized,
Simple in construction, cost is relatively low and control is simple.
The present invention also proposes a kind of rotary compressor, realizes that cylinder is carried out between a compression chamber and two compression chambers
Switching, simple in construction, cost is relatively low and control is simple.
Multi-cylinder rotary compressor according to embodiments of the present invention, including Dual-mode compression mechanism, the Dual-mode compression
Mechanism includes two cylinders and two plate shaped slide plates, and each cylinder is provided with the cylindrical shape for possessing suction hole and steam vent
Compression chamber；Each cylinder is provided with the vane slot to the compression chamber perforate, and the vane slot rear end side possesses slide plate
Chamber, possess permanent-magnet pieces in one of them described slide plate chamber, the pressure of the slide plate chamber provided with the permanent-magnet pieces and do not set permanent magnetism
The pressure at expulsion of the steam vent of the cylinder of part is identical；The piston for carrying out eccentric revolution, Mei Gesuo are provided with each compression chamber
State slide plate to slide in the corresponding vane slot, each slide plate with the periphery wall of the piston by carrying out contact slide
First side and the rear end side composition being accommodated in the slide plate chamber；The wherein pressure at expulsion using the steam vent and the air-breathing
The suction of the pressure difference of the pressure of inspiration(Pi) in hole and the permanent-magnet pieces to the slide plate so that the slide plate corresponding with the permanent-magnet pieces
Stop or release to stop with the contact slide of the piston.
Multi-cylinder rotary compressor according to embodiments of the present invention, by using the pressure at expulsion and suction hole of steam vent
The pressure difference of pressure of inspiration(Pi), permanent-magnet pieces to the suction of slide plate, so as to Dual-mode compression mechanism can realize two cylinders operations or
The operation of one cylinder, it is simple in construction, cost is relatively low and control is simple.
Specifically, the material of the permanent-magnet pieces is rare earth.
In some examples of the present invention, the decrement of described two cylinders of the Dual-mode compression mechanism is identical.
In some embodiments of the invention, when the slide plate slides stopping with the piston contact, after the slide plate
Side is contacted with the rear wall of the slide plate chamber and the rear end side of the slide plate is spaced apart with the permanent-magnet pieces.
In some embodiments of the invention, when the slide plate slides stopping with the piston contact, the elder generation of the slide plate
Side is located in the corresponding vane slot.
Rotary compressor according to embodiments of the present invention, including the cylinder with cylinder chamber, the cylinder have and institute
Two vane slots of cylinder chamber connection are stated, each vane slot rear end side possesses slide plate chamber；Being provided with the cylinder chamber can be inclined
The piston of heart revolution, each vane slot is interior to be provided with slidable slide plate, and each slide plate is by the periphery with the piston
The rear end side composition that wall carries out the first side of contact slide and is accommodated in the slide plate chamber；In the circumference of the cylinder, often
The both sides of the individual vane slot have steam vent and suction hole, and one of slide plate intracavitary is provided with permanent-magnet pieces, provided with the permanent magnetism
The pressure of the slide plate chamber of part is identical with the pressure at expulsion of steam vent corresponding to the slide plate chamber for not setting permanent-magnet pieces, wherein utilizing phase
The pressure difference and the permanent-magnet pieces of the pressure of inspiration(Pi) for the suction hole answered and the pressure at expulsion of the steam vent are to the slide plate
Suction, the contact slide of the slide plate corresponding with the permanent-magnet pieces and the piston is caused to stop or release to stop.
Rotary compressor according to embodiments of the present invention, by using the pressure at expulsion of steam vent and the air-breathing of suction hole
The pressure difference of pressure, permanent-magnet pieces enter to the suction of slide plate so as to realize cylinder between a compression chamber and two compression chambers
Row switching, simple in construction, cost is relatively low and control is simple.
Specifically, the material of the permanent-magnet pieces is rare earth.
In some embodiments of the invention, when the slide plate slides stopping with the piston contact, after the slide plate
Side is contacted with the rear wall of the slide plate chamber and the rear end side of the slide plate is spaced apart with the permanent-magnet pieces.
In some embodiments of the invention, when the slide plate slides stopping with the piston contact, the elder generation of the slide plate
Side is located in the corresponding vane slot.
In some embodiments of the invention, the rotary compressor is single cylinder rotary compressor.
Brief description of the drawings
Fig. 1 is related to embodiments of the invention 1, represents state of the slide plate (16a and 16b) of 2 compression chambers in action；
Fig. 2 be represented in embodiment 1 slide plate 16a it is static in, slide plate 16b in action, the 1st compression chamber 10a carries out cutting-out cylinder
Operating；
Fig. 3 is the 2nd compression chamber 10b in the 1st compression chamber 10a and compressed action in embodiment 1, in expression cutting-out cylinder operating
Section；
Fig. 4 is related to the compressor (B) of conventional compressor (A) and embodiment 1, respectively intermitten operation and continuous operation phase
The comparison figure of pass；
Fig. 5 with embodiments of the invention 2, the 1st compression chamber 10a apply setting in 2 stage compression type rotary compressors
Count case；
Fig. 6 is in embodiment 2, represents states of the 1st compression chamber 10a (the 2nd section of side) in cutting-out cylinder；
Fig. 7 be the embodiment of the present invention 3 in, represent 1 cylinder chamber by 2 slide plates be divided into 2 parts compression chamber and
Cutting-out cylinder principle；
Fig. 8 is in embodiment 3, represents states of the 1st compression chamber 10a in cutting-out cylinder.
Reference：
1st compression chamber 10a, the 2nd compression chamber 10b, piston 33a (33b), the 1st vane slot 12a, the 2nd vane slot 12b, compression
Chamber 19a (19b), low pressure chamber 18a (18b),
1st slide plate 16a, the 2nd slide plate 16b, the 1st slide plate chamber 15a, the 2nd slide plate chamber 15b,
Bent axle 35, eccentric shaft 35a (35b), suction hole 13a (13b), steam vent 14a (14b), air bleeding valve 17a (17b),
Container 8, magnet 30, sliding blade spring 20.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of accompanying drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect or can communicate each other；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals, is limited unless otherwise clear and definite.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Multi-cylinder rotary compressor according to embodiments of the present invention is described in detail below with reference to Fig. 1-Fig. 6, wherein multi-cylinder revolves
Rotary compressor can be twin-tub rotation-type compressor or three cylinders and the rotary compressor of the above.
Multi-cylinder rotary compressor according to embodiments of the present invention, including Dual-mode compression mechanism, Dual-mode compression mechanism
Including the plate shaped slide plate 16a (16b) of two cylinders and two, each cylinder is provided with the cylindrical shape for possessing suction hole and steam vent
Compression chamber.When multi-cylinder rotary compressor is three cylinder rotary compressor, three cylinder rotary compressors also include slide plate with
The cylinder that piston contacts all the time.
Each cylinder is provided with the vane slot 12a (12b) to compression chamber perforate, and vane slot rear end side possesses slide plate chamber 15a
(15b), possess permanent-magnet pieces 30 in one of slide plate chamber, the pressure of the slide plate chamber 15a provided with permanent-magnet pieces 30 and do not set permanent-magnet pieces
The steam vent 14b of 30 cylinder pressure at expulsion is identical.Alternatively, the material of permanent-magnet pieces 30 is rare earth such as ndfeb magnet.
The piston 33a (33b) for carrying out eccentric revolution is provided with each compression chamber, each slide plate is sliding in corresponding vane slot
Dynamic, each slide plate is made up of the rear end side that the first side of contact slide is carried out with the periphery wall of piston and is accommodated in slide plate chamber.
Wherein utilize suction of the pressure difference and permanent-magnet pieces 30 of the pressure at expulsion of steam vent and the pressure of inspiration(Pi) of suction hole to slide plate
Power so that stop or release to stop with the contact slide of 30 corresponding slide plate of permanent-magnet pieces and piston.Utilize and be provided with permanent-magnet pieces
The pressure of 30 slide plate chamber and the pressure difference of the pressure of inspiration(Pi) of corresponding suction hole and permanent-magnet pieces 30 to the suction of slide plate, control with forever
The action of slide plate corresponding to magnetic part 30.Specifically, when pressure difference is more than suction, the periphery wall contact slide of slide plate and piston, this
When Dual-mode compression mechanism in two cylinders be compressed action.When pressure difference is less than suction, the periphery wall of slide plate and piston takes off
From now an only cylinder is compressed action in Dual-mode compression mechanism.Wherein the contact slide of slide plate and piston stops
Representing that slide plate and piston separate causes piston be in idling conditions, release stopping expression slide plate tip stress newly with piston
Periphery wall carries out contact slide and causes corresponding cylinder to restart compressed action.
It is understood that multi-cylinder rotary compressor also includes element, Dual-mode compression mechanism and the electricity such as housing, motor
Machine is respectively provided in housing, and motor can be constant-seed motor or variable speed electric motors, particularly.Specifically, when the shell of multi-cylinder rotary compressor
When internal pressure is high pressure, the pressure of the slide plate chamber provided with permanent-magnet pieces 30 is identical with the pressure in housing.When multi-cylinder rotary pressure
When pressure is low pressure in the housing of contracting machine, the pressure of the slide plate chamber provided with permanent-magnet pieces 30 can be with the pressure phase of high pressure noise elimination cavity
Together.
In the specific example of the present invention, the container 8 connected with each slide plate chamber is provided with the outside of housing, when in housing
Pressure when being high pressure, container 8 can connect with the space in housing.When the pressure in housing is low pressure, container 8 can be with
High pressure noise elimination cavity connects, to cause the pressure at expulsion of the steam vent of cylinder of the pressure in container with not setting permanent-magnet pieces identical.
Multi-cylinder rotary compressor according to embodiments of the present invention, by using the pressure at expulsion and suction hole of steam vent
The pressure difference of pressure of inspiration(Pi), permanent-magnet pieces 30 to the suction of slide plate, so as to Dual-mode compression mechanism can realize two cylinders operations or
The operation of one cylinder of person, it is simple in construction, cost is relatively low and control is simple.
In some embodiments of the invention, the decrement of two cylinders of Dual-mode compression mechanism is identical.But can be with
Understand, the decrement of two cylinders of Dual-mode compression mechanism can also be different.
In some embodiments of the invention, when slide plate slides stopping with piston contact, rear end side and the slide plate chamber of slide plate
Rear wall contact and the rear end side of slide plate be spaced apart with permanent-magnet pieces 30.So as to avoid slide plate from being contacted with permanent-magnet pieces 30, ensure
When pressure difference is more than suction, slide plate can slide with piston contact.
In some embodiments of the invention, when slide plate slides stopping with piston contact, the first side of slide plate is positioned at corresponding
Vane slot in.So as to when slide plate and piston contact slide stopping, it is ensured that avoiding slide plate and piston contact.
Rotary compressor according to embodiments of the present invention is described in detail below with reference to Fig. 7 and Fig. 8.
Rotary compressor according to embodiments of the present invention, including the cylinder with cylinder chamber, cylinder has and cylinder chamber
Two vane slots of connection, each vane slot rear end side possess slide plate chamber 15a (15b).That is, a cylinder has one
Cylinder chamber and two vane slots.
The piston of eccentric revolution is provided with cylinder chamber, is provided with slidable slide plate 16a (16b) in each vane slot, often
Individual slide plate is made up of the rear end side that the first side of contact slide is carried out with the periphery wall of piston and is accommodated in slide plate chamber.
In the circumference of cylinder, the both sides of each vane slot have steam vent and suction hole, and one of slide plate intracavitary is set
There are permanent-magnet pieces 30, the exhaust of the pressure of the slide plate chamber provided with permanent-magnet pieces 30 steam vent corresponding with the slide plate chamber for not setting permanent-magnet pieces 30
Pressure is identical, and alternatively, the material of permanent-magnet pieces 30 is rare earth.
Wherein using corresponding suction hole pressure of inspiration(Pi) and steam vent pressure at expulsion pressure difference and permanent-magnet pieces 30 to cunning
The suction of piece, to stop or release to stop with the contact slide of 30 corresponding slide plate of permanent-magnet pieces and piston.I.e. using being provided with
The pressure of the slide plate chamber of permanent-magnet pieces 30 is with the pressure difference of the pressure of inspiration(Pi) of corresponding suction hole and permanent-magnet pieces 30 to the suction of slide plate, control
Make the action with 30 corresponding slide plate of permanent-magnet pieces.When pressure difference is more than suction, the periphery wall contact slide of slide plate and piston, now
Cylinder chamber is divided into two compression chambers and is compressed.When pressure difference is less than suction, the periphery wall of slide plate and piston departs from, now
Cylinder chamber is a compression chamber.
It is understood that rotary compressor, which also includes element, cylinder and the motors such as housing, motor, is respectively provided at housing
Interior, motor can be constant-seed motor or variable speed electric motors, particularly.
Specifically, rotary compressor according to embodiments of the present invention can be single cylinder rotary compressor, or may be used also
Think multi-cylinder rotary compressor, when rotary compressor is multi-cylinder rotary compressor, cylinder in addition can only be set
One with the slide plate of piston contact slide all the time.
Rotary compressor according to embodiments of the present invention, by using the pressure at expulsion of steam vent and the air-breathing of suction hole
The pressure difference of pressure, permanent-magnet pieces 30 are to the suction of slide plate, so as to realize cylinder between a compression chamber and two compression chambers
Switch over, simple in construction, cost is relatively low and control is simple.
In some embodiments of the invention, when slide plate slides stopping with piston contact, rear end side and the slide plate chamber of slide plate
Rear wall contact and the rear end side of slide plate be spaced apart with permanent-magnet pieces 30.So as to avoid slide plate from being contacted with permanent-magnet pieces 30, ensure
When pressure difference is more than suction, slide plate can slide with piston contact.
In some embodiments of the invention, when slide plate slides stopping with piston contact, the first side of slide plate is positioned at corresponding
Vane slot in.So as to when slide plate and piston contact slide stopping, it is ensured that avoiding slide plate and piston contact.
The compressor according to the several specific embodiments of the present invention is described in detail below with reference to Fig. 1-Fig. 8, compressor can be
Multi-cylinder rotary compressor or single cylinder rotary compressor.
Embodiment 1：
As shown in figure 1, there is difference in the 1st compression chamber 10a and the 2nd compression chamber 10b that multi-cylinder rotary compressor possesses
The piston 33a and piston 33b of eccentric revolution are carried out, contact slide is carried out to piston 33a and piston 33b periphery and respectively the
The 1st slide plate 16a and the 2nd slide plate 16b to be reciprocatingly slided in 1 vane slot 12a and the 2nd vane slot 12b.These slide plates are flat
Plate shape, these slide plates are provided with the tip (r portions) of contact slide piston outer periphery, are accommodated in the 1st slide plate chamber 15a or the 2nd slide plate chamber
Rear end in 15b.
The eccentric shaft 35a and 35b of right handed bent axle 35 carry out eccentric revolution to above-mentioned 2 pistons respectively.
And, relative to piston bias rotating speed (revolution speed), piston is from less than 10% that rotating speed is eccentric rotating speed.
As common rotary compressor, suction hole 13a and suction hole 13b that the both sides of two vane slots possess,
Steam vent 14a and steam vent 14b is open to the 1st compression chamber 10a and the 2nd compression chamber 10b respectively.In addition, possessing switch, these are arranged
The air bleeding valve 17a and air bleeding valve 17b of stomata.
The relative angle of 2 pistons of twin-tub rotation-type compressor is 180 degree, and φ is since slide plate 16b center
Angle of revolution.Therefore, Fig. 1 piston 33a and piston 33b angle of revolution are 90 degree and 270 degree respectively.
1st compression chamber 10a is divided into 2 parts by piston 33a and the 1st slide plate 16a, and high pressure chest 19a is sucked in compression
Gas, the low pressure chamber 18a of a side suck low-pressure gas (pressure Ps) from suction hole 13a.2nd compression chamber 10b high pressure chest 19b exists
Discharge gases at high pressure (pressure Pd), the low pressure chamber 18b of a side sucks low-pressure gas (pressure Ps) from suction hole 13b.
Possess the internal pressure of the seal casinghousing of these compression chambers as common rotary compressor, be and pressure at expulsion
(Pd) suitable high-pressure side.Therefore container 8 is suitable with the pressure of above-mentioned seal casinghousing, the 1st slide plate chamber 15a and the 2nd slide plate chamber 15b
Pressure be typically the high pressure (Pd) suitable with seal casinghousing internal pressure.Revolved in addition in housing internal pressure for the housing low pressure formula of low-pressure side
In rotary compressor, the pressure of container 8 is suitable with the pressure for sealing high pressure noise elimination cavity.
Operating 1st slide plate chamber 15a and the 2nd slide plate chamber 15b pressure are typically high-pressure side, and these slide plate chambers are not still
Slide plate rear end part has been stored, and possessed static 1st slide plate 16a magnet 30 respectively, compress the 2nd slide plate 16b slide plate bullet
Spring 20.
As shown in figure 1, operating pressure mesohigh (Pd) high and low pressure (Ps) is low, so its pressure difference (Δ P=Pd-Ps) is brought
The 1st slide plate 16a thrust it is bigger than the magnetic force (T) of magnet 30.Therefore, the 1st slide plate 16a will not be caught by magnet 30, the 1st pressure
Contracting chamber 10a persistently carries out sucking suction and the compression of gas together with the 2nd compression chamber 10b.
The thrust acted in Fig. 1, from the 1st slide plate 16a rear end piston 33a periphery walls is F, F=f1-f2.
It is the 1st compression chamber 10a that 1st slide plate 16a is pressed the power pressed, f2 by the pressure (Pd) that f1 is the 1st slide plate chamber 15a towards piston 33a directions
The direction pressure power pressed of the pressure by the 1st slide plate 16a to the 1st slide plate chamber 15a.
The sectional area (S) rectangular with the 1st slide plate 16a slide plate glide direction according to slide plate width (w) and height (h) come
Decision, S=wxh, f1=SxPd.But, f2 value change is produced according to piston 33a angle of revolution (φ), and according to width
(w) and slide plate tip designs the center offset generation variation of such as r sizes, piston 33a.
But f2 minimum values are unrelated with the design of slide plate tip, when in piston 33a angle of revolution, (φ) is 0 degree or 360 degree
Wait, f2 is minimum value.At this moment f2=SxPs, so Fmax=Sx (Pd-Ps)=Sx Δs P.Magnetic force of the Fmax than magnet 30
(T) if small, the 1st slide plate 16a in reciprocatingly sliding is attracted and static by magnet 30.
Piston 33a angle of revolution (φ) be 0 degree or 360 degree when, the 1st slide plate 16a be in top dead centre.It is that slide plate is quiet
A flash only and be the 1st slide plate 16a rear end face closest to the moment of magnet 30.Therefore, the 1st slide plate 16a is in optimal wink
Between caught and static by magnet 30.
Fig. 2 and Fig. 3 represents that the 1st slide plate 16a's is static.The 1st slide plate 16a is static by magnet 30 in 1st compression chamber 10a,
Piston 33a is dallied, in cutting-out cylinder operating in, the 2nd compression chamber 10b for compression operation continue in.
As shown in figure 3, the 1st slide plate 16a rear end forms less gap (C) and the 1st slide plate chamber 15a with magnet 30
Rear wall contact and stop, it is possible to evading the contact with magnet 30.In addition, if the 1st slide plate 16a rear end is slided the 1st
If piece chamber 15a rear wall stops, the 1st slide plate 16a first side in the 1st vane slot 12a, can evade and the piston that dallies
33a conflict.
Next, run in switch to Fmax ＞ T if, the 1st slide plate 16a it is static can release, so moment the 1st slide
The piston 33a, the 1st compression chamber 10a that piece 16a comes into contact with idle running release cutting-out cylinder.Therefore, the compressions of the 1st compression chamber 10a and the 2nd
Chamber 10b is compressed operation again together.
Next the explanation of case, is designed to the magnetic force (T) needed for magnet 30.Compressor using home-use air conditioner as
Example, in addition, magnet 30 from the viewpoint of magnetic force, has used the ndfeb magnet (Neodymium Magnet) for belonging to rare earth.
If 1st slide plate 16a size is width x depth=2.3mmx13mm, Δ P=1MPa, F=0.3cm2x10.2Kgf/cm2=
3.06Kgf.The magnetic force (T) of φ 9x8mm ndfeb magnet is about 3.1Kgf, so, using the magnet 30 of this style
Words, slide plate is static during Δ P=1MPa.
Carry the air conditioner of the compressor of the styles design with such slide plate and magnet, be transferred to stable operation area
While domain, if Δ P is reduced to 1MPa, the 1st compression chamber 10a can cutting-out cylinder.On the contrary, if Δ P increases to more than 1MPa, cutting-out cylinder
Release.Have thus determined cutting-out cylinder Δ P, it is easy for may decide that the 1st slide plate 16a size and the design of magnet 30.
In above-mentioned design, the 1st compression chamber 10a it is suitable with the 2nd compression chamber 10b discharge capacity if, when Δ P ＞ 1MPa,
Compressor can play 100% cold (pattern 100%).Thereafter 50% can automatically, be switched to if Δ P ＜ 1MPa
Cold (pattern 50%).Thereafter, if Δ P ＞ 1MPa, 100% pattern is returned to.If the moreover, row of 2 compression chambers of change
If the ratio of amount, above-mentioned pattern can be altered to 100% and 40%.
When carrying out pattern switching between 50% and pattern 100% consciously, fortune is changed in speed-changing rotation formula compressor
The method of scanning frequency degree is relatively conventional, and the aperture of electric expansion valve can be changed in terms of device, also has heat exchanger fan rotating speed can be with
The methods of increase and decrease.Method below can also be used in constant speed rotary compressor.
Δ P=0MPa during compressor start, institute 50% are started in mode.Thereafter, if Δ P ＞ 1MPa, switch to
100% pattern.The speed-changing rotation formula compressor that usual below 30Hz starts is switched to pattern if accelerating the speed of service
100% switching time can shorten.Speed of service when constant speed rotary compressor starts is 50 or 60Hz, so switching to
The time of pattern 100% is fast.It can control below 20 seconds in any case.
Like this, in terms of reducing the purpose of cold by the cutting-out cylinder of compression chamber, its background is illustrated.(1) generally
The minimum operation speed of speed-changing rotation formula compressor can be limited as follows.First, the speed of service is if below 15rps,
Centrifugation pumping forces can reduce, and due to the fuel feeding deficiency to eccentric shaft and compression chamber, eccentric shaft abrasion and compression efficiency can be brought to reduce.
On the other hand, single cylinder rotary compressor can produce the problem of vibration sharply increases in below 25rps.
(2) if room temperature or refrigeration storehouse temperature are stable, each air conditioner load or cooling load can reduce.Therefore, compress
The intermitten operation (cold switches between 100% and 0%) of machine can increase.Even speed-changing rotation formula compressor, as described above, minimum
The speed of service has border, it is possible to goes to intermitten operation.Not only seasonal energy efficiency (APF) can reduce in intermitten operation, Er Qiekong
Comfortableness is adjusted also to reduce.The reduction of APF and air conditioning comfortableness, for constant speed rotary compressor, be bigger problem.
The present invention possesses pattern 50%, so above-mentioned intermitten operation number can be greatly decreased.That is, pattern is automatically switched to
50% continues to run with, so intermitten operation number can be reduced.Therefore, APF and air conditioning comfortableness or refrigerator storage temperature is bad
Change can be taken precautions against in advance.Particularly air conditioner load less middle season or effect can be clearly played during owl run.
Fig. 4 is the concept map based on home-use air conditioner data, on speed-changing rotation formula compressor, relatively in the past (A) and
The present embodiment 1 (B).Transverse axis (Time) is the elapsed time since compressor start, and the longitudinal axis (P (MPa)) represents compressor
The change of high side pressure (Pd) and low-pressure lateral pressure (Ps).
In the startup of compressor, twin-tub carries out air-breathing and compression simultaneously in conventional (A).But compressor (B) is reaching Δ
It is pattern 50% before P ＞ 1MPa.During Δ P ＞ 1MPa, pattern 100% is switched at once.It is switched to the time (t1) of pattern 100%
It is within 15 seconds by the speed of service control after above-mentioned startup.
After compressor start, air conditioner load increase, so compressor increases the speed of service, Pd rapidly rises, and Ps is also quickly
Reduce.After about 40 minutes, after indoor temperature is stable, the speed of service is reduced, so Pd starts to reduce, Ps is gradually increasing.From opening
It is dynamic start (t2) after approximately passing through 1 hour, indoor temperature can reach target temperature, maintain the low of room temperature so can go to thereafter
Speed operation, such as 15rps.
But, due to thermic load small middle season and night thermic load reduce, compressor speed be reduced to 15rps with
If lower, conventional (A) has to stopping compressor and is transferred to intermitten operation.As shown in Fig. 4 symbol A, intermitten operation is switched to
Afterwards, Pd and Ps are changed just as zigzag, so the temperature from indoor set air-out is unstable, ambient-temp-stable sexual disorder.
Moreover, the efficiency of air conditioner can deteriorate.
Compressor (B) in 15rps continuous services, while reach Δ P ＜ 1MPa, pattern 50%, cold can be switched to
Amount halves.That is, if 15rps is run, the cold equivalent to 7.5rps.Therefore, intermitten operation, sustained continuous fortune are not had
Row control room temperature.Therefore, air-conditioning quality will not be damaged, higher efficiency can be maintained.The effect is the refrigeration mode of air conditioner
Case, but same effect can also be reached in heating operation.In addition, refrigerating device is also the same.
The not still twin-tub machine of embodiment 1, can also be applied in the multi-cylinder rotary compressor more than 3 cylinder machines.
Such as, be exactly 3 fortune after different 2 the 1st compression chamber 10a of cutting-out cylinder Δ P value and 1 the 2nd compression chamber 10b combination
Row mode.As its means, the method that the magnetic force of change magnet 30 can be used between 2 the 1st compression chamber 10a.Change 3
If the discharge capacity of compression chamber, cold can be changed in 3 patterns.
Embodiment 2
Embodiment 2 is to apply the 1st compression chamber 10a and the 2nd compression chamber 10b in 2 grades of different compressions of pressure at expulsion respectively
Design in formula rotary compressor.Obtaining practical design in 2 stage compression type rotary compressors mainly has two methods.
(1) the 2nd compression chamber 10b compression gas (pressure Pd1) be drained into the 1st compression chamber 10a carry out further compression,
The housing high pressure mode (pressure Pd2) gases at high pressure (pressure Pd2) being discharged in compressor seal housing；Also (2) are the 2nd
The intermediate-pressure gas (intermediate pressure Pd1) that compression chamber 10b is compressed is discharged in seal casinghousing, thereafter, the 1st compression chamber
10a suction intermediate-pressure gas (pressure Pd1), the gases at high pressure (pressure Pd2) of compression are discharged in the housing in condenser
Between pressure type (pressure Pd1).
Embodiment 2 has the method for making the 1st compression chamber 10a cutting-out cylinders and the method for making the 2nd compression chamber 10b cutting-out cylinders.And, 2
Individual slide plate cavity pressure can change between Pd1 and Pd2, than in such as above-mentioned housing intermediate pressure mode, the 2nd slide plate chamber 15b and
1st slide plate chamber 15a pressure is respectively Pd1, Pd2.
Embodiment 2 as shown in Figure 5 is the design of above-mentioned (1), is the 1st compression chamber 10a progress cutting-out cylinder reconciliation at the 2nd section
Except the design of cutting-out cylinder.In addition, the 2nd slide plate chamber 15b and the 1st slide plate chamber 15a is open to seal casinghousing.Therefore, 2 slide plate chambers
Pressure be often it is equal.But, pressure is Pd2 in the housing of pattern 100%, pressure is Pd1 in the housing of pattern 50%.
Fig. 6 is operation in the 1st compression chamber 10a cutting-out cylinders, is pattern 50%, so pressure is Pd1, slide plate chamber pressure in housing
Power can also reduce.The service condition is the low region of the speed of service, under stable condition is the less service condition of thermic load.Separately
Outside, if pattern 50% returns to pattern 100%, to use the rotational speed of increase compressor, increase the 2nd compression chamber 10b's
The means such as capacity.
In terms of the discharge capacity of common 2 stage compression type, the 2nd compression chamber 10b it is bigger than the 1st compression chamber 10a, so the 2nd section the 1st
In terms of the selections of compression chamber 10a cutting-out cylinders, the reduced rate of cold is small, such as, by cold 70% runs.On the contrary, make the 2nd compression chamber
In the selection of 10b cutting-out cylinders, reduced rate is big, is run with cold 30% etc..Even in addition, rotatably pressed in 2 stage compression types
In contracting machine, in the stable operation that cooling load is few, it is not required that 2 grades of compressions.Therefore, effect similarly to Example 1 can be obtained
Fruit.
Embodiment 3
Embodiment 3 is 2 slide plates of configuration in 1 cylinder, possesses single cylinder rotary compressor, the cold of 2 compression chambers
It is the design switched over by 2 patterns.Motor can be that speed change style can also be constant speed.
In the figure 7, in 1 cylinder chamber, the 1st slide plate 16a and the 2nd slide plate 16b be relative, each slide plate tip and piston 33b
Periphery contact slide, therefore formed the 1st compression chamber 10a and the 2nd compression chamber 10b.These compression chambers possess suction hole 13a respectively
With suction hole 13b, also steam vent 14a and steam vent 14b.Therefore, 1 compression chamber of cylinder 2 is designed to twin-tub rotation-type
The alternate design of compressor.
Fig. 7 is Δ P ＞ 1MPa, 100% run in mode, the 1st compression chamber 10a suction stroke and instroke
Carry out simultaneously.2nd compression chamber 10b is in suction stroke.As shown in Figure 8, if Δ P ＜ 1MPa, compressor automatically switches to mould
Formula 50%.
In addition, after pattern 100% is switched to pattern 50%, steam vent 14a closed by air bleeding valve 17a, so, the 1st compression
The low-pressure gas of chamber 10a suctions can short time and suction hole 13b low-pressure gas interflow.But the 2nd compression chamber 10b piston
33b peripheries will be by can just start to compress after suction hole 13b.In addition, if the arrangement angles change of 2 slide plates, thus it is possible to vary
Pattern ratio.
The slide plate height of single cylinder rotary compressor is about 2 times of twin-tub, and the magnet of static slide plate can become big, class be present
Topic.But apply in refrigerator rotary compressor, discharge capacity can reduce, and slide plate height can reduce, and have no problem.
In embodiment 3, if controlling the implementation of the method reference implementation example 1 of compressor and equipment, it can obtain and embodiment 1
Same effect and effect.In addition, if the pressure of container 8 is always maintained at high-pressure side (Pd), can use in housing high pressure
In formula and housing low pressure formula it is any in.
The rotary compressor of the present invention can be mounted in air conditioner, freezing equipment, water heater etc., applied flexibly.Separately
Outside, the design alteration of magnet is simply added in slide plate chamber, so carrying out commercialization comparison using current rotary compressor
Easily.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
- A kind of 1. multi-cylinder rotary compressor, it is characterised in that including Dual-mode compression mechanism, Dual-mode compression mechanism bag Two cylinders and two plate shaped slide plates are included, each cylinder is provided with the columnar compression for possessing suction hole and steam vent Chamber；Each cylinder is provided with the vane slot to the compression chamber perforate, and the vane slot rear end side possesses slide plate chamber, its In possess permanent-magnet pieces in a slide plate chamber, the pressure of the slide plate chamber provided with the permanent-magnet pieces and the gas for not setting permanent-magnet pieces The pressure at expulsion of the steam vent of cylinder is identical；The piston for carrying out eccentric revolution is provided with each compression chamber, each slide plate is sliding in the corresponding vane slot Dynamic, each slide plate is by carrying out the first side of contact slide with the periphery wall of the piston and being accommodated in the slide plate chamber Rear end side forms；Wherein using the steam vent pressure at expulsion and the suction hole pressure of inspiration(Pi) pressure difference and the permanent-magnet pieces to institute State the suction of slide plate so that the contact slide of the slide plate corresponding with the permanent-magnet pieces and the piston stops or released to stop Only.
- 2. multi-cylinder rotary compressor according to claim 1, it is characterised in that the material of the permanent-magnet pieces is rare earth.
- 3. multi-cylinder rotary compressor according to claim 1, it is characterised in that the Dual-mode compression mechanism it is described The decrement of two cylinders is identical.
- 4. multi-cylinder rotary compressor according to claim 1, it is characterised in that the slide plate is slided with the piston contact During dynamic stopping, the rear end side of the slide plate is contacted with the rear wall of the slide plate chamber and the rear end side of the slide plate and the permanent-magnet pieces It is spaced apart.
- 5. multi-cylinder rotary compressor according to claim 1, it is characterised in that the slide plate is slided with the piston contact During dynamic stopping, the first side of the slide plate is located in the corresponding vane slot.
- 6. a kind of rotary compressor, it is characterised in that including the cylinder with cylinder chamber, the cylinder has and the cylinder Two vane slots of chamber connection, each vane slot rear end side possess slide plate chamber；The piston of eccentric revolution is provided with the cylinder chamber, slidable slide plate, Mei Gesuo are provided with each vane slot Slide plate is stated by the first side with the periphery wall of piston progress contact slide and the rear end side group being accommodated in the slide plate chamber Into；In the circumference of the cylinder, the both sides of each vane slot have steam vent and suction hole, one of slide plate chamber It is interior to be provided with permanent-magnet pieces, the pressure steam vent corresponding with the slide plate chamber for not setting permanent-magnet pieces of the slide plate chamber provided with the permanent-magnet pieces Pressure at expulsion it is identical, wherein using the corresponding suction hole pressure of inspiration(Pi) and the steam vent pressure at expulsion pressure difference And the permanent-magnet pieces to the suction of the slide plate, cause with the permanent-magnet pieces corresponding to slide plate contact with piston cunning It is dynamic to stop or release to stop.
- 7. rotary compressor according to claim 6, it is characterised in that the material of the permanent-magnet pieces is rare earth.
- 8. rotary compressor according to claim 6, it is characterised in that the slide plate slides with the piston contact to stop When only, the rear end side of the slide plate is contacted with the rear wall of the slide plate chamber and the rear end side of the slide plate and the permanent-magnet pieces interval Open.
- 9. rotary compressor according to claim 6, it is characterised in that the slide plate slides with the piston contact to stop When only, the first side of the slide plate is located in the corresponding vane slot.
- 10. according to the rotary compressor any one of claim 6-9, it is characterised in that the rotary compressor For single cylinder rotary compressor.
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| CN107152811A (en) * | 2017-06-30 | 2017-09-12 | 美的集团武汉制冷设备有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN107917078B (en) | 2017-11-08 | 2024-03-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable capacity control structure, compressor and variable capacity control method thereof |
| CN107989794B (en) * | 2017-11-23 | 2023-10-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Multistage compressor and air conditioner with same |
| CN109185141A (en) * | 2018-10-25 | 2019-01-11 | 珠海凌达压缩机有限公司 | For the compression mechanism of compressor, compressor and air conditioner |
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