CN109026703A - Variable-capacity pump body assembly and compressor with same - Google Patents
Variable-capacity pump body assembly and compressor with same Download PDFInfo
- Publication number
- CN109026703A CN109026703A CN201811069981.XA CN201811069981A CN109026703A CN 109026703 A CN109026703 A CN 109026703A CN 201811069981 A CN201811069981 A CN 201811069981A CN 109026703 A CN109026703 A CN 109026703A
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- Prior art keywords
- slide plate
- accommodating cavity
- pump assembly
- variable capacity
- air entry
- Prior art date
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- 238000007906 compression Methods 0.000 claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 19
- 206010008469 Chest discomfort Diseases 0.000 claims description 8
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- 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
- F04C18/3566—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 more than line or surface
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a variable-capacity pump body assembly and a compressor with the same, and solves the technical problem that the technical defect that the energy efficiency of the compressor cannot be improved according to the load change of a single compressor cylinder in the prior art is overcome, and the technical scheme comprises the following steps: a pump body assembly comprising: the air cylinder component, the eccentric rotating component and the sliding sheet component are arranged on the side wall of the sliding sheet facing the low-pressure cavity, a second air suction port is additionally arranged on the air cylinder component, a second air exhaust port communicated with the sliding sheet containing cavity is arranged on the air cylinder component, and a controllable valve component is arranged at the first end and the second end of the controllable valve component and is respectively communicated with the sliding sheet containing cavity and the low-pressure cavity. According to the invention, a new compression cavity formed by the slide sheet containing cavity can be unloaded or loaded according to the requirement of the working load of the pump body, so that the variable capacity operation of the single cylinder body is realized, and the energy efficiency of the compressor is improved.
Description
Technical field
The present invention relates to Compressor Technology fields, and in particular to a kind of variable capacity pump assembly and with the pump assembly
Compressor.
Background technique
Rotary compressor is therefore widely used in since refrigeration performance is good, small in size, structure is simple, high reliablity
In household room air conditioner, and rise steadily with advances in technology with energy prices, it is high-performance, low noise, safe and power saving
Air conditioner is more and more welcomed by the people.The raising of conditioner efficiency is greatly in compressor.Improve the effect of compressor
Rate produces one of the main means that efficient compressor has become current all compressor manufacturers product competition.
Existing rotary compressor mainly includes shell, pump assembly, electric machine assembly and oil sump.The stator of electric machine assembly with
Bore of stator is formed between shell, pump assembly, wherein stator upper space is motor epicoele, and stator lower space is under motor
Chamber.Pump assembly mainly includes cylinder, crankshaft, roller and slide plate component.Cylinder upper and lower ends are respectively provided with lower flange in cylinder
Interior formation sealed volume, slide plate component are limited in the sliding vane groove on cylinder wall, and roller rotates in cylinder chamber along its cavity wall, sliding
Piece is close under the action of the spring to which cylinder chamber is divided into suction chamber and compression chamber with roller, and slide plate is made with the rotation of roller
Straight reciprocating motion, so that rotary compressor be made to complete air-breathing-compression-exhaust process.
The compressor pump of the prior art, either single cylinder compressor or multicylinder compressor, a general cylinder only have
One compression chamber, especially single cylinder compressor can not improve compressor by transfiguration when compressor operating load variations
Efficiency.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming single compresser cylinder in the prior art can not basis
Load variations improve the technological deficiency of compressor efficiency, to provide a kind of variable capacity pump assembly and have the pump assembly
Compressor.
For achieving the above object, the technical solution adopted by the present invention includes:
A kind of variable capacity pump assembly, comprising: cylinder assembly has inner cavity, on the inner wall of the inner cavity there is slide plate to hold
Set chamber；Eccentric rotary component is set in the inner cavity；Slide plate component is arranged in the slide plate accommodating cavity, including head is kept
The slide plate contacted with the eccentric rotary portion, the inner cavity is divided into the high pressure chest with exhaust outlet and had by the slide plate inhales
The low pressure chamber of port；The second air entry is had additional on the side wall towards the low pressure chamber of the slide plate；On the cylinder assembly
Equipped with the second exhaust port being connected to the slide plate accommodating cavity, exhaust valve component is provided at the second exhaust port；Controlled valve
Component, including the first end being connected to the slide plate accommodating cavity, the second end being connected to the low pressure chamber, and be arranged described
Between first end and the second end and it can control the valve of the first end Yu the second end on-off；It, can when loading increase-volume
Control valve module turns off the connection of the first end Yu the second end, closes the slide plate accommodating cavity；When the slide plate stretches out institute
When stating slide plate accommodating cavity to second air entry part exposing, second air entry holds the low pressure chamber and the slide plate
Set chamber connection；The slide plate described in the eccentric rotary Component driver, which bounces back to second air entry and is completely in the slide plate, to be held
When setting intracavitary, the low pressure chamber and the connection of the slide plate accommodating cavity are truncated, second air entry, the slide plate accommodating cavity
And the second exhaust port forms additional compression chamber, the low-pressure gas in the slide plate accommodating cavity constantly bounces back with the slide plate
It is compressed to form high pressure gas, until passing through the second exhaust when reaching the drainage pressure for opening the exhaust valve component
Mouth discharge；When unloading volume reduction, controllable valve module is connected to the first end and the second end, the slide plate accommodating cavity with it is described low
Press chamber connection, the low-pressure gas in the slide plate accommodating cavity constantly bounces back with the slide plate, via the slide plate accommodating cavity, can
Control valve module is back in the low pressure chamber.
The cylinder assembly includes: cylinder, has sliding vane groove on inner wall；First end sealing and second end sealing, setting exist
The cylinder axial ends, and it is shaped as the inner cavity with the limiting cylinder, it limits to form the slide plate appearance with the sliding vane groove
Set chamber.
The sliding vane groove tail end is connected to the first end of the controllable valve module.
The second end of the controllable valve module is connected to the air entry.
The valve includes controllable electromagnetic valve.
It further include the management circuit suitable for controlling the controllable valve module shutdown or open state, the control of the management circuit
Output end processed is connect with the valve controlled end in the controllable valve module.
The second exhaust port is arranged on the first end sealing.
The exhaust outlet of the high pressure chest side is arranged on the first end sealing.
The slide plate component further include: elastic component is arranged in the slide plate accommodating cavity, and partial pressure is in the cunning
On piece contacts the slide plate holding with the outer circumference surface in the eccentric rotary portion.
The slide plate includes: slide plate ontology, and the slide plate body tail section is equipped with limiting section, the flexible freedom of the elastic component
End is connect with the limiting section.
The limiting section is groove, and the flexible free end setting of the elastic component is in the groove.
The tail end of second air entry is connected to the groove.
Second air entry is the strip elongated slot that length direction is stretched out along the slide plate or retracted orientation is arranged.
The eccentricity of the eccentric rotary component is set as e, head to the head of the slide plate of second air entry
The distance between be X, when the slide plate stretches out the slide plate accommodating cavity longest, second air entry exposes the slide plate and holds
The size along slide plate stretching or retracted orientation for setting chamber side is H, then meets H=2e-X.
The value range of the H is 0.1~0.2mm.
The air entry is arranged on the internal chamber wall of the cylinder.
The eccentric rotary component includes: crankshaft, and the crankshaft runs through the cylinder assembly, and is had on the crankshaft inclined
Center portion；Roller, the roller are set on the eccentric part.
The sliding vane groove is the cavity being molded on the cylinder.
A kind of compressor, including according to pump assembly described in any of the above embodiments.
Technical solution of the present invention has the advantages that
1. pump assembly provided by the invention, comprising: cylinder assembly has inner cavity, has on the inner wall of the inner cavity and slide
Piece accommodating cavity；Eccentric rotary component is set in the inner cavity；Slide plate component is arranged in the slide plate accommodating cavity, including head
The slide plate contacted with the eccentric rotary portion is kept, the inner cavity is divided into high pressure chest and tool with exhaust outlet by the slide plate
There is the low pressure chamber of air entry；The second air entry is had additional on the side wall towards the low pressure chamber of the slide plate；The air cylinder group
Part is equipped with the second exhaust port being connected to the slide plate accommodating cavity, is provided with exhaust valve component at the second exhaust port；It can
Valve module is controlled, including the first end being connected to the slide plate accommodating cavity tail end, the second end being connected to the low pressure chamber, Yi Jishe
Set between the first end and the second end and can control the valve of the first end Yu the second end on-off.
Above structure is core of the invention structure, as realizing the structure basis of new compression chamber load or unload.For
It is easy to understand, increase-volume and volume reduction described below, so-called " appearance " refers to the volume that is effectively compressed of cylinder, rather than the non-work of cylinder
Make the natural volume under state.
When pump housing workload is higher, the new compression chamber for needing to load the formation of slide plate accommodating cavity realizes increase-volume to improve energy
Effect, specific steps include: the connection that controllable valve module turns off the first end Yu the second end, the slide plate accommodating cavity envelope
It closes, slide plate accommodating cavity is loaded to form new compression chamber, realizes the increase-volume of cylinder.After increase-volume, new compression chamber specific work process are as follows:
When the slide plate, which stretches out the slide plate accommodating cavity, to be exposed to second air entry part, second air entry will be described low
Pressure chamber is connected to the slide plate accommodating cavity；It is complete that the slide plate described in the eccentric rotary Component driver bounces back to second air entry
When entirely in the slide plate accommodating cavity, the low pressure chamber and the connection of the slide plate accommodating cavity are truncated, second air-breathing
Mouthful, the slide plate accommodating cavity and the second exhaust port form additional compression chamber, the low-pressure gas in the slide plate accommodating cavity with
The slide plate constantly bounce back and be compressed to form high pressure gas, until reaching the drainage pressure for opening the exhaust valve component
When, it is discharged by the second exhaust port.
When pump housing workload is lower, does not need additionally to load slide plate accommodating cavity space again, need to unload new pressure at this time
For contracting chamber to improve efficiency, specific steps include: that controllable valve module is connected to the first end and the second end, the slide plate accommodating
Chamber is connected to the low pressure chamber, enters the low-pressure gas in the slide plate accommodating cavity by the second air entry, not with the slide plate
Disconnected retraction is back in the low pressure chamber via the slide plate accommodating cavity, controllable valve module, and is not compressed, therefore, slide plate
New compression chamber can not be formed in accommodating cavity, is not involved in the work of compressed gas, and the new compression chamber of unloading is reached with this and carries out volume reduction.
Cylinder slide plate accommodating cavity tail portion of the present invention is connected with controllable valve module, and when it is closed, confined space is formed, slide plate
The second air entry that confined space can be connected to low pressure chamber is equipped with towards low pressure chamber side.As the periodic reverse of slide plate is transported
Dynamic, gas enters confined space by the second air entry, when the second air entry is closed as slide plate bounces back, the slide plate compressed gas bodily form
It is discharged by second exhaust port, when reaching the drainage pressure of exhaust valve component unlatching to realize slide plate tail portion at high pressure gas
Space periodicity air-breathing, compression, the process of exhaust increase minimum cylinder volume.When controllable valve module is opened, slide plate accommodating cavity tail portion
It is linked to be access with low pressure chamber, pressure balance, slide plate accommodating cavity is not closed at this time, without compression process, reduces entirety at this time
Minimum cylinder volume.Through the invention, it can be unloaded according to the needs of pump housing workload or load what this was formed by slide plate accommodating cavity
New compression chamber realizes the varying capacity operation of single cylinder, improves compressor efficiency.
2. pump assembly provided by the invention, valve includes controllable electromagnetic valve, and mating setting is suitable for control in pump assembly
Make the management circuit of the controllable valve module shutdown or open state, the control output end of the management circuit and the controlled valve
Valve controlled end connection in component, valve is opened according to management circuit control instruction or cut-off.
3. pump assembly provided by the invention, the tail end of sliding vane groove is open in the prior art, in the present invention, controllably
The first end of valve module can be directly connected to the tail end of the sliding vane groove, sliding vane groove tail end can also be closed, in first end
The position that sliding vane groove is corresponded on sealing or second end sealing additionally opens up connecting hole, by the first end of controllable valve module and the connection
Hole connection.The present embodiment preferably uses and is connected to controllable valve module with sliding vane groove tail end.Without being made to existing slide plate slot structure
More to improve the design that new compression chamber can be realized, structure is simple and easy to implement.
4. the second end of pump assembly provided by the invention, controllable valve module is connected to low pressure chamber, air entry can be passed through
12 are connected to low pressure chamber, can also additionally start venthole on cylinder wall and be connected to low pressure chamber, and the present embodiment preferably uses will
The second end of controllable valve module is connected to air entry 12, and structure is simple and easy to implement.
5. pump assembly provided by the invention, the eccentricity of the eccentric rotary component is set as e, second air entry
The distance between head to the head of the slide plate be X, when the slide plate stretches out the slide plate accommodating cavity longest, described the
The size along slide plate stretching or retracted orientation that two air entries expose slide plate accommodating cavity side is H, then meets H=2e-
X.The value range of the H is 0.1~0.2mm.Cunning is gradually exposed with the movement that slide plate stretches out slide plate accommodating cavity in second air entry
Piece accommodating cavity, expose slide plate accommodating cavity size cannot it is excessive can not be too small, need reasonably to set its exposing size
Range.
6. compressor provided by the invention, including according to pump assembly described above, there is the institute of above-mentioned pump assembly
There is advantage.
In conclusion open and close of the present invention by the control channel of control cylinder slide plate accommodating cavity, effective use
The space of cylinder slide plate accommodating cavity, makes it in the loading and unloading for realizing new compression chamber under different operating conditions, realizes capacity
Output on demand.
The present invention is described in detail with reference to the accompanying drawing.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the explosive view of 1 middle pump body component of the embodiment of the present invention；
Fig. 2 is cross-sectional view of Fig. 1 middle pump body component along cylinder radial direction (controllable valve module is not shown in figure)；
Description of symbols:
1- cylinder；11- sliding vane groove；111- second exhaust port；112- exhaust outlet；12- air entry；13- high pressure chest；14- is low
Press chamber；15- first end sealing；16- second end sealing；2- crankshaft；31- slide plate；The second air entry of 311-；32- elastic component；4- rolling
Son；5- muffler.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment
This invention describes a kind of compressors comprising a kind of variable capacity pump assembly.Wherein pump assembly can be single
Cylinder may be twin-tub or multi-cylinder.
As illustrated in fig. 1 and 2, the variable capacity pump assembly in the present embodiment includes: cylinder assembly, has inner cavity, inner cavity
There is slide plate accommodating cavity on inner wall；Eccentric rotary component is set in inner cavity；Slide plate component is arranged in slide plate accommodating cavity, including
Head keeps the slide plate 31 contacted with eccentric rotary portion, and inner cavity is divided into 13 He of high pressure chest with exhaust outlet 112 by slide plate 31
Low pressure chamber 14 with air entry 12；The second air entry 311 is had additional on the side wall towards low pressure chamber 14 of slide plate 31；Air cylinder group
Part is equipped with the second exhaust port 111 being connected to slide plate accommodating cavity, is provided with exhaust valve component at second exhaust port 111；Controllably
Valve module, including the first end being connected to the slide plate accommodating cavity, the second end being connected to the low pressure chamber 14, and setting exist
Between the first end and the second end and it can control the valve of the first end Yu the second end on-off.
Above structure is core of the invention structure, and the new compression chamber that slide plate accommodating cavity is formed is loaded or unloaded as realizing
The structure basis of load.For ease of understanding, increase-volume and volume reduction described below, what so-called " appearance " referred to cylinder is effectively compressed appearance
Product, rather than the natural volume under cylinder off working state.
When pump housing workload is higher, the new compression chamber for needing to load the formation of slide plate accommodating cavity realizes increase-volume to improve energy
Effect, specific steps include: the connection that controllable valve module turns off the first end Yu the second end, the slide plate accommodating cavity envelope
It closes, slide plate accommodating cavity is loaded to form new compression chamber, realizes the increase-volume of cylinder.After increase-volume, new compression chamber specific work process are as follows:
When the slide plate 31 stretches out the slide plate accommodating cavity to 311 part of the second air entry, second air entry 311 is by institute
Low pressure chamber 14 is stated to be connected to the slide plate accommodating cavity；The slide plate 31 described in the eccentric rotary Component driver bounces back to described second
When air entry 311 is completely in the slide plate accommodating cavity, the low pressure chamber 14 and the connection of the slide plate accommodating cavity are truncated,
Second air entry 311, the slide plate accommodating cavity and the second exhaust port 111 form additional compression chamber, and the slide plate holds
Intracavitary low-pressure gas is set as the constantly retraction of slide plate 31 is compressed to form high pressure gas, until reaching makes the exhaust valve
When the drainage pressure that component is opened, it is discharged by the second exhaust port 111.
When pump housing workload is lower, does not need additionally to load slide plate accommodating cavity again, need to unload new compression chamber at this time
To improve efficiency, specific steps include: that controllable valve module is connected to the first end and the second end, the slide plate accommodating cavity with
The low pressure chamber 14 is connected to, and enters the low-pressure gas in the slide plate accommodating cavity by the second air entry, not with the slide plate 31
Disconnected retraction, is back in the low pressure chamber 14, and be not compressed via the slide plate accommodating cavity, controllable valve module, therefore, slide plate
New compression chamber can not be formed in accommodating cavity, is not involved in the work of compressed gas, and the new compression chamber of unloading is reached with this and carries out volume reduction.
Cylinder slide plate accommodating cavity tail portion of the present invention is connected with controllable valve module, and when it is closed, confined space is formed, slide plate
The second air entry that confined space can be connected to low pressure chamber is equipped with towards low pressure chamber side.As the periodic reverse of slide plate is transported
Dynamic, gas enters confined space by the second air entry, when the second air entry is closed as slide plate bounces back, the slide plate compressed gas bodily form
It is discharged by second exhaust port, when reaching the drainage pressure of exhaust valve component unlatching to realize slide plate tail portion at high pressure gas
Space periodicity air-breathing, compression, the process of exhaust increase minimum cylinder volume.When controllable valve module is opened, slide plate accommodating cavity tail portion
It is linked to be access with low pressure chamber, pressure balance, slide plate accommodating cavity is not closed at this time, without compression process, reduces entirety at this time
Minimum cylinder volume.Through the invention, it can be unloaded according to the needs of pump housing workload or load what this was formed by slide plate accommodating cavity
New compression chamber realizes the varying capacity operation of single cylinder, improves compressor efficiency.In addition to this, the present invention is inhaled by increasing by second
Port and design to second exhaust port, can make full use of the space structure of original sliding vane groove on original air cylinder structure, can
It is additional to increase minimum cylinder volume, the dischargeable capacity and efficiency of the pump housing are improved, and new compression chamber property simple and reliable for structure is good.
In the present invention, cylinder assembly includes: cylinder 1, has sliding vane groove 11 on inner wall；First end sealing 15 and the second end seal
Part 16 is arranged in 1 axial ends of cylinder, and forms the inner cavity with the cylinder 1 restriction, limits with the sliding vane groove 11
Form the slide plate accommodating cavity.The tail end of sliding vane groove is open in the prior art, in the present invention, the first of controllable valve module
End can be directly connected to the tail end of the sliding vane groove 11, sliding vane groove tail end can also be closed, in first end sealing or second
The position that sliding vane groove is corresponded on end seal part additionally opens up connecting hole, and the first end of controllable valve module is connected to the connecting hole.This
Embodiment preferably uses and is connected to controllable valve module with 11 tail end of sliding vane groove.More change without being made to existing slide plate slot structure
Into the design that new compression chamber can be realized, structure is simple and easy to implement.
As variant embodiment, slide plate accommodating cavity can also be by the length that opens up directly on 1 wall of cylinder and radially along cylinder
Strip blind hole is formed, and slide plate is placed in sliding in strip blind hole.
In the present invention, as shown in Figure 1, the exhaust outlet 112 of 13 side of second exhaust port 111 and high pressure chest is arranged at first end
On sealing 15.When slide plate accommodating cavity is formed by strip blind hole, intercommunicating pore is set in strip blind hole, cylinder upper surface, if
The second exhaust port 111 on first end sealing 15 is set, is connected to by intercommunicating pore with strip blind hole.As another embodiment party
Formula, second exhaust port 111 can also be set up directly on cylinder 1, for example, the tail end of sliding vane groove 11 is set as second exhaust port 111,
11 tail end of sliding vane groove can be specifically made into shoulder hole structure, elastic component is placed in stepped hole step upper limit, the setting of stepped hole tail end
Exhaust valve component.It include the valve block baffle and valve being arranged on first end sealing 15 or cylinder 1 by rivet in exhaust valve component
Piece.It further include the muffler 15 that 15 top of first end sealing is set in pump assembly in the present embodiment.
The second end of controllable valve module is connected to low pressure chamber in the present invention, can be connected to by air entry 12 with low pressure chamber,
Venthole can also additionally be started on cylinder wall to be connected to low pressure chamber, the present embodiment is preferably used the second of controllable valve module
End is connected to air entry 12, and structure is simple and easy to implement.
Valve includes controllable electromagnetic valve in the present invention, and mating setting is suitable for controlling the controllable valve module in pump assembly
The management circuit of shutdown or open state, the control output end of the management circuit and the valve in the controllable valve module are controlled
End connection, valve is opened according to management circuit control instruction or cut-off.
As shown in Figure 1, the second air entry 311 is that length direction is stretched out along slide plate 31 or the strip of retracted orientation setting is long
Slot.When designing the maximum length of the second air entry 311 exposing slide plate accommodating cavity side, setting is held when slide plate 31 stretches out slide plate first
When setting chamber longest, the size along the stretching of slide plate 31 or retracted orientation that the second air entry 311 exposes slide plate accommodating cavity side is H, and
The eccentricity of eccentric rotary component is set as e, the distance between head to head of slide plate 31 of the second air entry 311 is X, then
H=2e-X.According to the needs of practical operation, the value range of H can be set as 0.1~0.2mm.The size of H cannot be excessive
Cannot be too small, need reasonably to set the size range of its exposing.
On the basis of the above, the second air entry 311 is further described from slide plate accommodating cavity will be stretched out to i.e. will be complete
The process of full reduced time slide plate accommodating cavity.Slide plate is compressed to completely to rotate origin in slide plate accommodating cavity with eccentric rotary component,
When eccentric rotary component turns to 128 ° by origin, the second air entry 311 starts to stretch out slide plate accommodating cavity, eccentric rotary component
128 ° of corners be exactly air intake passage opening angle.When eccentric rotary component continues to rotate to 180 °, slide plate 31 stretches out slide plate
Accommodating cavity apart from longest, the second air entry 311 exposes the distance of slide plate accommodating cavity also longest, the size preferably 0.1~
Between 0.2mm, specific size is determined according to design requirement.When eccentric rotary component continues to rotate, slide plate starts to bounce back, thus
The distance for driving the second air entry to expose slide plate accommodating cavity is also gradually reduced, until when continuing to rotate to 232 °, the second air entry
311 closings, 232 ° of corners of eccentric rotary component are exactly the closing angle of air intake passage.So far, slide plate accommodating can be calculated
- 128 °=104 ° of air-breathing angular range area α=232 ° of chamber.Above-mentioned is only the air-breathing angle of distance the second air intake passage of explanation
Degree, is not limited to that, the opening angle and closing angle of air intake passage can be changed according to design requirement.
As shown in Fig. 2, sliding vane groove 11 is the cavity being molded on cylinder 1, and sliding vane groove upper and lower end face, finishing processing, and
Slide plate accommodating cavity is formed with the cooperation sealing of upper lower flange.
In the present embodiment, slide plate component further include: elastic component 32 is arranged in slide plate accommodating cavity, and partial pressure exists
On slide plate 31, contact the holding of slide plate 31 with the outer circumference surface in eccentric rotary portion.Elastic component 32 uses pressure spring or pagoda spring.This
The preferred pressure spring of embodiment.
In the present embodiment, slide plate 31 includes: slide plate ontology, and slide plate body tail section is equipped with limiting section, and elastic component 32 stretches
Free end is connect with limiting section.Limiting section is groove, and the flexible free end of elastic component 32 is arranged in groove.It can be stronger fixed
The position and connection of position slide plate ontology and elastic component 32.Wherein, as shown in Figure 1, the tail end of the second air entry 311 and groove connect
It is logical.
In the present embodiment, air entry 12 is arranged on the internal chamber wall of cylinder 1.Eccentric rotary component includes: crankshaft 2, crankshaft 2
Through cylinder assembly, and there is eccentric part on crankshaft 2；Roller 4, roller 4 are set on eccentric part.
The course of work of variable capacity pump assembly in the present invention are as follows:
Load new compression chamber: when pump housing workload is higher, controllable valve module turns off the first end and described second
The connection at end, the slide plate accommodating cavity are closed, in this case, when slide plate 31 stretches out slide plate accommodating cavity to the second air entry
311 when being gradually exposed, and low pressure chamber 14 is gradually connected to by the second air entry 311 with slide plate accommodating cavity；When eccentric rotary Component driver
Slide plate 31 bounces back to the second air entry 311 when being completely in slide plate accommodating cavity, the connection quilt of low pressure chamber 14 and slide plate accommodating cavity
Truncation, the second air entry 311, slide plate accommodating cavity and second exhaust port 111 form closed additional compression chamber, in slide plate accommodating cavity
Low-pressure gas be compressed to form high pressure gas with the constantly retraction of slide plate 31, until the pressure of high pressure gas reaches and makes exhaust valve
When the drainage pressure that component is opened, compressed high pressure gas is discharged by second exhaust port 111, so far completes a new compression
The compression process of chamber.
Unload new compression chamber: when pump housing workload is lower, controllable valve module is connected to the first end and described second
End, the slide plate accommodating cavity are connected to the low pressure chamber 14, enter the low pressure gas in the slide plate accommodating cavity by the second air entry
Body is back to the low pressure chamber 14 via the slide plate accommodating cavity tail end, controllable valve module with the slide plate 31 constantly retraction
It is interior, and be not compressed, therefore, slide plate accommodating cavity can not form new compression chamber, be not involved in the work of compressed gas, reached with this
It unloads new compression chamber and carries out volume reduction.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (19)
1. a kind of variable capacity pump assembly characterized by comprising
Cylinder assembly has inner cavity, has slide plate accommodating cavity on the inner wall of the inner cavity；
Eccentric rotary component is set in the inner cavity；
Slide plate component is arranged in the slide plate accommodating cavity, and the slide plate contacted with the eccentric rotary portion is kept including head
(31), the inner cavity is divided into the high pressure chest (13) with exhaust outlet (112) and has air entry (12) by the slide plate (31)
Low pressure chamber (14)；
The second air entry (311) are had additional on the side wall towards the low pressure chamber (14) of the slide plate (31)；
The cylinder assembly is equipped with the second exhaust port (111) being connected to the slide plate accommodating cavity, the second exhaust port
(111) exhaust valve component is provided at；
Controllable valve module, including the first end being connected to the slide plate accommodating cavity, the second end being connected to the low pressure chamber (14),
And it is arranged between the first end and the second end and can control the valve of the first end Yu the second end on-off；
When loading increase-volume, controllable valve module turns off the connection of the first end Yu the second end, closes the slide plate accommodating cavity；
When the slide plate (31) stretch out the slide plate accommodating cavity to the second air entry (311) part, second air entry
(311) low pressure chamber (14) is connected to the slide plate accommodating cavity；The slide plate (31) described in the eccentric rotary Component driver
When bouncing back to second air entry (311) and being completely in the slide plate accommodating cavity, the low pressure chamber (14) and the slide plate
The connection of accommodating cavity is truncated, second air entry (311), the slide plate accommodating cavity and the second exhaust port (111) shape
At additional compression chamber, the low-pressure gas in the slide plate accommodating cavity is compressed to form high pressure as the slide plate (31) constantly bounces back
Gas, until being discharged when reaching the drainage pressure for opening the exhaust valve component by the second exhaust port (111)；
When unloading volume reduction, controllable valve module is connected to the first end and the second end, the slide plate accommodating cavity and the low pressure
Chamber (14) is connected to, and the low-pressure gas in the slide plate accommodating cavity constantly bounces back with the slide plate (31), is held via the slide plate
Set chamber, controllable valve module is back in the low pressure chamber (14).
2. variable capacity pump assembly according to claim 1, which is characterized in that the cylinder assembly includes:
Cylinder (1) has sliding vane groove (11) on inner wall；
First end sealing (15) and second end sealing (16), be arranged in the cylinder (1) axial ends, and with the cylinder (1)
Restriction forms the inner cavity, limits with the sliding vane groove (11) and forms the slide plate accommodating cavity.
3. variable capacity pump assembly according to claim 2, which is characterized in that sliding vane groove (11) tail end and it is described can
Control the first end connection of valve module.
4. variable capacity pump assembly according to claim 1, which is characterized in that the second end of the controllable valve module and institute
State air entry (12) connection.
5. variable capacity pump assembly according to claim 1, which is characterized in that the valve includes controllable electromagnetic valve.
6. variable capacity pump assembly according to claim 1, which is characterized in that further include being suitable for controlling the controllable valve group
Part shutdown or open state management circuit, it is described management circuit control output end and the controllable valve module in valve by
Control end connection.
7. variable capacity pump assembly according to claim 2, which is characterized in that second exhaust port (111) setting exists
On the first end sealing (15).
8. variable capacity pump assembly according to claim 2, which is characterized in that the exhaust outlet of high pressure chest (13) side
(112) it is arranged on the first end sealing (15).
9. variable capacity pump assembly according to claim 1, which is characterized in that the slide plate component further include:
Elastic component (32) is arranged in the slide plate accommodating cavity, and partial pressure makes the slide plate on the slide plate (31)
(31) it keeps contacting with the outer circumference surface in the eccentric rotary portion.
10. variable capacity pump assembly according to claim 9, which is characterized in that the slide plate (31) includes: slide plate sheet
Body, the slide plate body tail section are equipped with limiting section, and the flexible free end of the elastic component (32) is connect with the limiting section.
11. variable capacity pump assembly according to claim 10, which is characterized in that the limiting section is groove, the bullet
Property part (32) flexible free end setting in the groove.
12. variable capacity pump assembly according to claim 11, which is characterized in that the tail of second air entry (311)
End is connected to the groove.
13. -12 described in any item variable capacity pump assemblies according to claim 1, which is characterized in that second air entry
It (311) is strip elongated slot of the length direction along the slide plate (31) stretching or retracted orientation setting.
14. variable capacity pump assembly according to claim 13, which is characterized in that set the inclined of the eccentric rotary component
Heart amount is e, and the distance between head to head of the slide plate (31) of second air entry (311) is X, when the slide plate
(31) when stretching out the slide plate accommodating cavity longest, second air entry (311) expose slide plate accommodating cavity side along described
Slide plate (31) stretches out or the size of retracted orientation is H, then meets H=2e-X.
15. variable capacity pump assembly according to claim 14, which is characterized in that the value range of the H be 0.1~
0.2mm。
16. variable capacity pump assembly according to claim 2, which is characterized in that the air entry (12) is arranged described
On the internal chamber wall of cylinder (1).
17. variable capacity pump assembly according to claim 1, which is characterized in that the eccentric rotary component includes:
Crankshaft (2), the crankshaft (2) run through the cylinder assembly, and have eccentric part on the crankshaft (2)；
Roller (4), the roller (4) are set on the eccentric part.
18. variable capacity pump assembly according to claim 2, which is characterized in that the sliding vane groove (11) is to be molded over institute
State the cavity on cylinder (1).
19. a kind of compressor, which is characterized in that including according to claim 1-18 described in any item pump assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069981.XA CN109026703B (en) | 2018-09-13 | 2018-09-13 | Variable capacity pump body assembly and compressor with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069981.XA CN109026703B (en) | 2018-09-13 | 2018-09-13 | Variable capacity pump body assembly and compressor with same |
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| CN109026703A true CN109026703A (en) | 2018-12-18 |
| CN109026703B CN109026703B (en) | 2024-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322241A (en) * | 2020-04-11 | 2020-06-23 | 郑州凌达压缩机有限公司 | Pump body subassembly and rotary compressor |
| CN118775269A (en) * | 2024-09-10 | 2024-10-15 | 珠海凌达压缩机有限公司 | Sliding vane structure, pump body assembly and compressor |
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| JPH0579480A (en) * | 1991-09-17 | 1993-03-30 | Daikin Ind Ltd | Rotary compressor |
| KR100816656B1 (en) * | 2006-12-27 | 2008-03-26 | 엘지전자 주식회사 | Modulation type rotary compressor |
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| CN111322241A (en) * | 2020-04-11 | 2020-06-23 | 郑州凌达压缩机有限公司 | Pump body subassembly and rotary compressor |
| CN118775269A (en) * | 2024-09-10 | 2024-10-15 | 珠海凌达压缩机有限公司 | Sliding vane structure, pump body assembly and compressor |
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| Publication number | Publication date |
|---|---|
| CN109026703B (en) | 2024-03-22 |
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