CN106704188B - Rotary compressor and refrigeration system with it - Google Patents
Rotary compressor and refrigeration system with it Download PDFInfo
- Publication number
- CN106704188B CN106704188B CN201710104688.1A CN201710104688A CN106704188B CN 106704188 B CN106704188 B CN 106704188B CN 201710104688 A CN201710104688 A CN 201710104688A CN 106704188 B CN106704188 B CN 106704188B
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- Prior art keywords
- slide plate
- cylinder
- air entry
- compression chamber
- roller
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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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
Abstract
The invention discloses a kind of rotary compressor and with its refrigeration system.Rotary compressor includes：Casing；First cylinder, the first air entry are connected with the gaseous coolant of flash vessel opening；First roller；First slide plate；Second cylinder, third air entry are connected with the gaseous coolant of flash vessel opening, and the second air entry is connected with gas returning port；Second roller；Second slide plate and third slide plate, the inner cavity of second cylinder is separated into the second compression chamber and third compression chamber by the second slide plate, third slide plate and the second roller, second compression chamber and third compression chamber are in parallel, the tail end of first sliding vane groove is equipped with back pressure cavity, and back pressure cavity is configured to optionally be connected to one in gas outlet, the first air entry or the second air entry.The rotary compressor can adjust the volume for the compression chamber that refrigerant is sucked from the flash vessel of refrigeration system, to be conducive to improve the refrigerating capacity and heating capacity of refrigeration system using the rotary compressor.
Description
Technical field
The present invention relates to refrigeration technology fields, more particularly, to a kind of rotary compressor and have the rotary compressor
Refrigeration system.
Background technology
In winter, the heating capacity of air-conditioning system at low ambient temperatures will significantly decay, and be unable to reach user's calorific requirement
Demand.The reason is as follows that：First：Under low temperature environment, refrigerant density is smaller at compressor air suction mouth, leads to refrigerant soakage
It reduces, and then influences the heating capacity of air-conditioning system；Second：Since indoor/outdoor temperature-difference is larger, air-conditioning system evaporating temperature and condensation
Temperature difference great disparity, meeting shwoot goes out bulk gas after throttling, and refrigerant distribution is uneven between leading to evaporator difference flow path, influences
Evaporator heat transfer efficiency simultaneously because the heat that these flash gas enter evaporator absorption is smaller, and ties up evaporator pipeline
Space is but very big, so that pipeline very high surface area is lost the function of liquid conductive, further affects the heat exchange efficiency of evaporator.
In order to solve the problem, in recent years, by gas coolant injection mode apply on compressor and freeze cycle by
People pay close attention to, and especially the research of the feature of duplex-cylinder rotary compressor are used to achieve interim progress.Under cooling condition,
The refrigerant mass dryness fraction for getting in heat exchanger is relatively little, it is desirable that from the compression chamber volume of flash evaporation air-breathing compared with master cylinder volume
It is small, and when heating condition, especially low-temperature heating, the refrigerant mass dryness fraction into outdoor heat exchanger is relatively large, it is therefore desirable to bigger
Compression chamber suck gas from flash evaporation, but in APF (annual energy consumption efficiency) standard, cooling condition accounting is relatively
Greatly, the cylinder parameters of independent compression are generally designed by cooling condition requirement, will limit the heating under heating condition in this way
The increase rate of amount needs to improve thus.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention carries
Go out a kind of rotary compressor, which can adjust the compression chamber that refrigerant is sucked from the flash vessel of refrigeration system
Volume, to using the rotary compressor be conducive to improve refrigeration system refrigerating capacity and heating capacity.
The present invention also proposes a kind of refrigeration system with the rotary compressor.
The refrigeration system has flash vessel, and the rotary compressor of embodiment includes according to a first aspect of the present invention：Machine
Shell, the casing are equipped with gas returning port and gas outlet；First cylinder, first cylinder are equipped with the first air entry, first row
Gas port and the first sliding vane groove, first air entry and the first row gas port are respectively provided at the both sides of first sliding vane groove,
First air entry is connected with the gaseous coolant of flash vessel opening；First roller, the eccentric rotation of the first roller
Ground is located in first cylinder；First slide plate, first slide plate are slidably disposed in first sliding vane groove and in it
End is only against on first roller；Second cylinder, second cylinder are equipped with the second air entry, third air entry, second
Exhaust outlet, third exhaust outlet, the second sliding vane groove and third sliding vane groove, second air entry and the third exhaust outlet are set respectively
In the both sides of second sliding vane groove, the second exhaust port and the third air entry are respectively provided at the third sliding vane groove
Both sides, the third air entry are connected with the gaseous coolant of flash vessel opening, second air entry and the gas returning port
It is connected；Second roller, second roller is eccentric to be rotationally located in second cylinder；Second slide plate and third slide plate,
Second slide plate is slidably disposed in second sliding vane groove and its inner end is only against on second roller, the third
Slide plate is slidably disposed in the third sliding vane groove and its inner end is only against on second roller, wherein described second slides
The inner cavity of second cylinder is separated into the second compression chamber for piece, the third slide plate and second roller and third is compressed
Chamber, second compression chamber and the third compression chamber are in parallel, and the tail end of first sliding vane groove is equipped with back pressure cavity, the back pressure
Chamber is configured to optionally be connected to one in the gas outlet, first air entry or second air entry.
Rotary compressor according to the ... of the embodiment of the present invention, by making the first cylinder configuration at can load and off-loadable
Structure, so as to adjust the volume for the compression chamber for sucking refrigerant from the flash vessel of refrigeration system, to application, this is rotary
Compressor is conducive to improve the refrigerating capacity and heating capacity of refrigeration system.
In some preferred embodiments, between the center line of second sliding vane groove and the center line of the third sliding vane groove
Ranging from 15 °~50 ° of angle theta.
In some preferred embodiments, wherein by first roller and first slide plate point in first cylinder
It is separated out the first compression chamber, the maximum volume of first compression chamber is V1, wherein second slide plate, the third slide plate and institute
The maximum volume for stating the second compression chamber being connected to second air entry limited between the second roller is V2, described the
The third compression being connected to the third air entry limited between two slide plates, the third slide plate and second roller
The maximum volume of chamber be V3, wherein the maximum volume V1 of first compression chamber, second compression chamber maximum volume V2,
Meet following relational expression between the maximum volume V3 of the third compression chamber：0.03≤V3/V2≤0.20,0.20≤(V3+V1)/
V2≤0.4。
The refrigeration system of embodiment according to a second aspect of the present invention, including：The rotation according to a first aspect of the present invention
Formula compressor；Four-way reversing valve, the four-way reversing valve include the first valve port to the 4th valve port, first valve port and the rotation
The gas outlet of rotary compressor is connected, and the 4th valve port is connected with the gas returning port；Flash vessel, the flash vessel have first
Refrigerant opening, gaseous coolant opening and the second refrigerant opening, gaseous coolant opening and first cylinder of the flash vessel
First air entry is connected with the third air entry of second cylinder；Indoor heat exchanger and first throttling device, the interior are changed
After hot device is connected with the first throttling device, the indoor heat exchanger is connected with second valve port, the first throttle dress
It sets and is connected with the first refrigerant of flash vessel opening；Outdoor heat exchanger and second throttling device, the outdoor heat exchanger and institute
State second throttling device series connection after, the outdoor heat exchanger is connected with the third valve port, the second throttling device with it is described
The second refrigerant opening of flash vessel is connected.
Refrigeration system according to the ... of the embodiment of the present invention, by the way that the rotary compressor is arranged, to refrigerating capacity and heating capacity
It can be enhanced.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the systematic schematic diagram of refrigeration system according to the ... of the embodiment of the present invention；
Fig. 2 is the partial structural diagram of rotary compressor according to the ... of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the second cylinder of rotary compressor according to the ... of the embodiment of the present invention.
Reference numeral：
Refrigeration system 100；
Rotary compressor 10；
Casing 1；Gas returning port 11；Gas outlet 12；
First cylinder 2；First roller 3；First slide plate 4；
Second cylinder 5；Second air entry 51；Second exhaust port 52；Third air entry 53；Third exhaust outlet 54；Second slides
Film trap 55；Third sliding vane groove 56；
Second roller 6；
Second slide plate 71；Third slide plate 72；Second compression chamber 73；Third compression chamber 74；
Bent axle 8；
Four-way reversing valve 20；First valve port 201；Second valve port 202；Third valve port 203；4th valve port 204；
Flash vessel 30；First refrigerant opening 301；Gaseous coolant opening 302；Second refrigerant opening 303；
Indoor heat exchanger 40；First throttling device 50；Outdoor heat exchanger 60；Second throttling device 70；
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "upper", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used
In description purpose, it is not understood to indicate or imply relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more this feature.
In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
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
Can also can be indirectly connected through an intermediary the connection inside two elements or two elements to be to be connected directly
Interaction relationship.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
Firstly the need of explanation, refrigeration system 100 according to the ... of the embodiment of the present invention is to have refrigeration cycle and have
Heat the double round robin cooling system 100 of cycle.The refrigeration system 100 includes flash vessel 30, which has the first refrigerant
Opening 301, gaseous coolant opening 302 and the second refrigerant opening 303, wherein the first refrigerant opening 301 and the second refrigerant opening 303
It is used equally for the inlet and outlet of refrigerant, such as when external refrigerant enters sudden strain of a muscle from the first refrigerant of flash vessel 30 opening 301
After in steaming device 30, after gas-liquid separation, liquid refrigerants can be from 303 discharge of the second refrigerant opening, and gaseous coolant can be from gas
302 discharge of state refrigerant opening；Correspondingly, when external refrigerant enters flash distillation from the second refrigerant of flash vessel 30 opening 303
After in device 30, after gas-liquid separation, liquid refrigerants can be from 301 discharge of the first refrigerant opening, and gaseous coolant can be from gaseous state
302 discharge of refrigerant opening.
The rotary compression according to the ... of the embodiment of the present invention for refrigeration system 100 is described with reference to figure 1- Fig. 3 first below
Machine 10.
Rotary compressor 10 according to the ... of the embodiment of the present invention includes：Casing 1, the first cylinder 2, the first roller 3, first are slided
Piece 4, the second cylinder 5, the second roller 6, the second slide plate 71 and third slide plate 72.
Installation cavity is limited in casing 1, casing 1 is equipped with gas returning port 11 and gas outlet 12, and gas outlet 12 is used for casing 1
The interior refrigerant discharge compressed, gas returning port 11 are used to make the refrigerant by external refrigeration or heating cycle to return in compressor
Portion carries out second compression again.
First cylinder 2 and the second cylinder 5 are arranged in installation cavity, and the first cylinder 2 and the second cylinder 5 are in the up-down direction
It is arranged spaced apart, partition board can be set therebetween.
First cylinder 2 is equipped with 4 slot of the first air entry, first row gas port and the first slide plate, the first air entry and first row
Gas port is respectively provided at the both sides of 4 slot of the first slide plate, and the first air entry is connected with the gaseous coolant of flash vessel 30 opening 302, and first
Roller 3 is eccentric to be rotationally located in the first cylinder 2, and the first slide plate 4 is slidably disposed in 4 slot of the first slide plate and its inner end is stopped
It is against on the first roller 3.Of course, it should be understood that bent axle 8 and motor (not shown) are additionally provided in rotary compressor 10,
Motor driven crankshafts 8 rotate, and the first roller 3 is set on bent axle 8 and eccentric in the first cylinder 2 under the drive of bent axle 8
Rotation.Wherein the first air entry is used for the sucking of refrigerant, and first row gas port is used for the discharge of refrigerant, and the inner end of the first slide plate 4 is stopped
It is against on the outer wall of the first roller 3, when the first roller 3 eccentric rotary in the first cylinder 2, the first air entry is from flash vessel 30
302 sucking refrigerants of gaseous coolant opening, the cold media gas entered in the first cylinder 2 carries out under the rotation of the first roller 3
Compression, compressed cold media gas can be discharged in the inner cavity of casing 1 from first row gas port, to be discharged again through gas outlet 12
Rotary compressor 10.
As shown in figure 3, in an embodiment of the present invention, the second cylinder 5 is equipped with the second air entry 51, third air entry
53, second exhaust port 52, third exhaust outlet 54, the second sliding vane groove 55 and third sliding vane groove 56, the second air entry 51 and third row
Gas port 54 is respectively provided at the both sides of the second sliding vane groove 55, and second exhaust port 52 and third air entry 53 are respectively provided at the second sliding vane groove
55 both sides, third air entry 53 are connected with the gaseous coolant of flash vessel 30 opening 302, the second air entry 51 and 11 phase of gas returning port
Even, the second roller 6 is eccentric is rotationally located in the second cylinder 5, and the second slide plate 71 is slidably disposed in the second sliding vane groove 55
And its inner end is only against on the second roller 6, third slide plate 72 is slidably disposed in third sliding vane groove 56 and its inner end is only against
On second roller 6.
Wherein, the inner cavity of the second cylinder 5 is separated into the second compression by the second slide plate 71, third slide plate 72 and the second roller 6
Chamber 73 and third compression chamber 74, the second compression chamber 73 and third compression chamber 74 are in parallel.That is, the inner cavity tool of the second cylinder 5
There are two compression chambers, and specifically the second compression chamber 73 is the center line and third in 5 center of circle of the second cylinder of mistake of the second slide plate 71
Space defined by the center line in 5 center of circle of the second cylinder of mistake of slide plate 72, then the sky that is collectively formed with the outer wall of the second roller 6
Between, wherein second compression chamber 73 is the space being connected to the second air entry 51；Similarly, third compression chamber 74 is the second slide plate 71
5 center of circle of the second cylinder of mistake center line and third slide plate 72 5 center of circle of the second cylinder of mistake center line defined by space, then
The space collectively formed with the outer wall of the second roller 6, wherein the third compression chamber 74 are the spaces being connected to third air entry 53.
" the second compression chamber 73 and third compression chamber 74 are in parallel " refers to the second air entry 51 and third of the second compression chamber 73
The third air entry 53 of compression chamber 74 sucks refrigerant from outside jointly, and under the eccentric rotary of the second roller 6, cold media gas is the
After being compressed respectively in two compression chambers 73 and third compression chamber 74, then respectively from 54 row of second exhaust port 52 and third exhaust outlet
Go out in the inner cavity to casing 1, to which rotary compressor 10 be discharged through gas outlet 12 again.Further, in the implementation of the present invention
In example, third air entry 53 is connected with the gaseous coolant of flash vessel 30 opening 302, and the second air entry 51 is connected with gas returning port 11,
It is compressed that is, the second compression chamber 73 is used to suck cold media gas from gas returning port 11, third compression chamber 74 is used for from sudden strain of a muscle
The 302 sucking cold media gas of gaseous coolant opening of steaming device 30 is compressed.Thus the second compression chamber 73 and third compression chamber are constituted
The 74 parallel-connection structure form compressed respectively.
Wherein, in an embodiment of the present invention, the tail end of 4 slot of the first slide plate is equipped with back pressure cavity, and back pressure cavity is configured to can
Selectivity is connected to one in gas outlet 12, the first air entry or the second air entry 51.To which the first cylinder 2 can be added
It carries or unloading, i.e. the first cylinder 2 can participate in the compression work of rotary compressor 10, the first cylinder 2 can also be unloaded
And stop the compression to gaseous coolant.
Specifically, when back pressure cavity is connected to gas outlet 12, the pressure at back pressure cavity is high pressure, at this time 2 quilt of the first cylinder
Load, the first slide plate 4 in 4 slot of the first slide plate slidably；When back pressure cavity is connected to the first air entry or the second air entry 51,
Pressure at back pressure cavity is low pressure, and the first cylinder 2 is unloaded at this time, and the first slide plate 4 stops sliding in 4 slot of the first slide plate.By
This can both enter first when the first cylinder 2 is loaded from the refrigerant of 302 discharge of the gaseous coolant of flash vessel 30 opening
It is compressed in cylinder 2, and can enter in the second compression chamber 73 of the second cylinder 5 and be compressed, thus from flash vessel 30
The space for sucking the compression chamber of gas is larger, to meet requirement when heating condition, is conducive to improve heating capacity；And when first
When cylinder 2 is unloaded, the second cylinder 5 may only have both been entered from the refrigerant of 302 discharge of the gaseous coolant of flash vessel 30 opening
It is compressed in second compression chamber 73, thus the space of the compression chamber from the sucking gas of flash vessel 30 becomes smaller, to meet refrigeration
Requirement when operating mode is conducive to improve refrigerating capacity.
To sum up, rotary compressor 10 according to the ... of the embodiment of the present invention, by making the first cylinder 2 be configured to can to load and
Off-loadable structure, so as to adjust the volume for the compression chamber for sucking refrigerant from the flash vessel 30 of refrigeration system 100, to
Be conducive to improve the refrigerating capacity and heating capacity of refrigeration system 100 using the rotary compressor 10.
Rotary compressor 10 according to the ... of the embodiment of the present invention is described in detail below with reference to Fig. 1-Fig. 3.
As shown in Figures 2 and 3, the angle theta between the center line and the center line of third sliding vane groove 56 of the second sliding vane groove 55
Ranging from 15 °~50 °.It is possible thereby to keep the distribution of the volume of the second compression chamber 73 and third compression chamber 74 more reasonable, it can be with
Make the second cylinder 5 not only and can meet the compressed capability for sucking refrigerant from gas returning port 11, but also can meet and be sucked from flash vessel 30
The compressed capability of refrigerant.
In example as shown in Figure 3, the second sliding vane groove 55 is located at 6 rotating direction of the second roller of third sliding vane groove 56
15 °~50 °, wherein the second roller 6 rotates in the counterclockwise direction in figure 3, the second sliding vane groove 55 is then located at third sliding vane groove 56
Anticlockwise 15 °~50 ° within the scope of.
In an embodiment of the present invention, first pressure is separated out by the first roller 3 and the first slide plate 4 in the first cylinder 2
The maximum volume of contracting chamber, the first compression chamber is V1, wherein it should be noted that the first compression chamber turns in the bias of the first roller 3
It is variation in dynamic process, and when the inner wall intersection point of the first roller 3 and the first cylinder 2 is located at the center line of 4 slot of the first slide plate
Upper and the first slide plate 4 is urged to by the first roller 3 when being fully retracted in 4 slot of the first slide plate, at this time the outer wall of the first roller 3 and
The maximum volume that the space limited between the inner wall of first cylinder 2 is the first compression chamber is V1.
What is limited between wherein the second slide plate 71, third slide plate 72 and the second roller 6 is connected to the second air entry 51
The maximum volume of the second compression chamber 73 be V2, wherein the second compression chamber 73 is the second cylinder of mistake 5 center of circle of the second slide plate 71
Space defined by center line of the center line with 5 center of circle of the second cylinder of mistake of third slide plate 72, then it is total with the outer wall of the second roller 6
With the space constituted, wherein second compression chamber 73 is the space being connected to the second air entry 51, when the second roller 6 rotates,
The volume of second compression chamber 73 is continually changing, and when the inner wall intersection point of the second roller 6 and the second cylinder 5 is located at the second slide plate
On the center line of slot 55 and the second slide plate 71 is urged to by the second roller 6 when being fully retracted in the second sliding vane groove 55, and at this time
The space limited between the outer wall of two rollers 6, the first slide plate 4 and the inner wall of the second cylinder 5 is the second compression chamber 73
Maximum volume is V2.
Similarly, what is limited between the second slide plate 71, third slide plate 72 and the second roller 6 connects with third air entry 53
The maximum volume of logical third compression chamber 74 is V3, wherein third compression chamber 74 is 5 center of circle of the second cylinder of mistake of the second slide plate 71
Center line and third slide plate 72 5 center of circle of the second cylinder of mistake center line defined by space, then the outer wall with the second roller 6
The space collectively formed, wherein the third compression chamber 74 are the spaces being connected to third air entry 53, when the second roller 6 rotates
When, the volume of third compression chamber 74 is continually changing, and when the inner wall intersection point of the second roller 6 and the second cylinder 5 is located at third
On the center line of sliding vane groove 56 and third slide plate 72 is urged to by the second roller 6 when being fully retracted in third sliding vane groove 56, this
When the outer wall of the second roller 6, the first slide plate 4 and the inner wall of the second cylinder 5 between the space that is limited be third compression chamber
74 maximum volume is V3.
In an embodiment of the present invention, the maximum volume V1 of the first compression chamber, the maximum volume V2 of the second compression chamber 73,
Meet following relational expression between the maximum volume V3 of three compression chambers 74：0.03≤V3/V2≤0.20,0.20≤(V3+V1)/V2≤
0.4.The volume distribution of the first compression chamber, the second compression chamber 73 and third compression chamber 74 is more reasonable as a result, can make the first gas
Cylinder 2 and the second cylinder 5 can not only meet the compressed capability that refrigerant is sucked from gas returning port 11, but also can meet from flash vessel 30 and suck
Refrigerant compressed capability, after thus rotary compressor 10 is applied to refrigeration system 100, be more favorable for refrigeration system 100
The raising of refrigerating capacity and heating capacity.
The refrigeration system 100 of embodiment according to a second aspect of the present invention is described below with reference to Fig. 1.
As shown in Figure 1, refrigeration system 100 according to the ... of the embodiment of the present invention includes：Rotary compressor 10, four-way reversing valve
20, flash vessel 30, indoor heat exchanger 40, first throttling device 50, outdoor heat exchanger 60 and second throttling device 70.
Wherein the rotary compressor 10 is the rotary compressor 10 according to first aspect present invention embodiment, and four-way changes
Include the first valve port 201, the second valve port 202, third valve port 203 and the 4th valve port 204, the first valve port 201 and rotation to valve 20
The gas outlet 12 of formula compressor 10 is connected, and the 4th valve port 204 is connected with gas returning port 11, wherein the first valve port 201 it is selectable and
Second valve port 202 is connected to one in third valve port 203, the 4th valve port 204 selectable and the second valve port 202 and third valve
Another connection in mouth 203.
Flash vessel 30 has the first refrigerant opening 301, gaseous coolant opening 302 and the second refrigerant opening 303, wherein first
The inlet and outlet that refrigerant opening 301 and the second refrigerant opening 303 are used equally for refrigerant, such as when external refrigerant is from flash vessel
After 30 the first refrigerant opening 301 enters in flash vessel 30, after gas-liquid separation, liquid refrigerants can be opened from the second refrigerant
Mouth 303 is discharged, and gaseous coolant can be from 302 discharge of gaseous coolant opening；Correspondingly, when external refrigerant is from flash vessel 30
After second refrigerant opening 303 enters in flash vessel 30, after gas-liquid separation, liquid refrigerants can be open from the first refrigerant
301 discharges, gaseous coolant can be from 302 discharges of gaseous coolant opening.
The third air-breathing of the gaseous coolant opening 302 of flash vessel 30 and the first air entry and the second cylinder 5 of the first cylinder 2
Mouth 53 is connected, and after indoor heat exchanger 40 is connected with first throttling device 50, indoor heat exchanger 40 is connected with the second valve port 202, the
One throttling set 50 is connected with the first refrigerant of flash vessel 30 opening 301, and outdoor heat exchanger 60 is connected with second throttling device 70
Afterwards, outdoor heat exchanger 60 is connected with third valve port 203, the second refrigerant 303 phases of opening of second throttling device 70 and flash vessel 30
Even.
The first row gas port of first cylinder 2, the second exhaust port 52 and third exhaust outlet 54 of the second cylinder 5 with casing 1
Inner cavity connection, i.e., no matter refrigerant compression in the first cylinder 2, or the compression in the second cylinder 5 is discharged in casing 1, then
Rotary compressor 10 is discharged from gas outlet 12, since the first valve port 201 is connected with the gas outlet 12 of rotary compressor 10, because
This high pressure refrigerant being discharged from the gas outlet of rotary compressor 10 12, which is entered through the first valve port 201 in system, to be participated in recycling.
4th valve port 204 is connected with gas returning port 11, and the second air entry 51 of the second cylinder 5 is connected with the gas returning port 11,
Thus the second pressure of the second cylinder 5 of rotary compressor 10 is returned to through the 4th valve port 204 from the refrigerant after system participation cycle
It is compressed in contracting chamber 73.
Wherein, the first air entry is connected with the gaseous coolant of flash vessel 30 opening 302, third air entry 53 and flash vessel 30
Gaseous coolant opening 302 be connected, therefore during system circulation, the gaseous coolant being discharged from flash vessel 30, Ke Yijin
Enter into the first compression chamber of the first cylinder 2 and compressed, or can also enter in the third compression chamber 74 of the second cylinder 5
It is compressed.
Since the first cylinder 2 can be loaded or can be unloaded, the first compression chamber is selectable from flash vessel
30 sucking refrigerants, so as to adjust the volume for the compression chamber for sucking refrigerant from the flash vessel 30 of refrigeration system 100, to answer
Be conducive to improve the refrigerating capacity and heating capacity of refrigeration system 100 with the rotary compressor 10.Therefore according to embodiments of the present invention
Refrigeration system 100, by the way that the rotary compressor 10 is arranged, refrigerating capacity and heating capacity can be enhanced.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (4)
1. a kind of rotary compressor for refrigeration system, which is characterized in that the refrigeration system has flash vessel, the rotation
Rotary compressor includes：
Casing, the casing are equipped with gas returning port and gas outlet；
First cylinder, first cylinder are equipped with the first air entry, first row gas port and the first sliding vane groove, first air-breathing
Mouth and the first row gas port are respectively provided at the both sides of first sliding vane groove, the gas of first air entry and the flash vessel
State refrigerant opening is connected；
First roller, first roller is eccentric to be rotationally located in first cylinder；
First slide plate, first slide plate is slidably disposed in first sliding vane groove and its inner end is only against first rolling
On son；
Second cylinder, second cylinder are equipped with the second air entry, third air entry, second exhaust port, third exhaust outlet, the
Two sliding vane grooves and third sliding vane groove, second air entry and the third exhaust outlet are respectively provided at the two of second sliding vane groove
Side, the second exhaust port and the third air entry are respectively provided at the both sides of the third sliding vane groove, the third air entry
It is connected with the gaseous coolant of flash vessel opening, second air entry is connected with the gas returning port；
Second roller, second roller is eccentric to be rotationally located in second cylinder；
Second slide plate and third slide plate, second slide plate is slidably disposed in second sliding vane groove and its inner end is only against
On second roller, the third slide plate is slidably disposed in the third sliding vane groove and its inner end is only against described second
On roller,
Wherein, the inner cavity of second cylinder is separated by second slide plate, the third slide plate and second roller
Two compression chambers and third compression chamber, second compression chamber and the third compression chamber are in parallel, the tail end of first sliding vane groove
Equipped with back pressure cavity, the back pressure cavity be configured to optionally with the gas outlet, first air entry or described second
A connection in air entry.
2. rotary compressor according to claim 1, which is characterized in that the center line of second sliding vane groove with it is described
Ranging from 15 °~50 ° of angle theta between the center line of third sliding vane groove.
3. rotary compressor according to claim 1, which is characterized in that by described wherein in first cylinder
One roller and first slide plate are separated out the first compression chamber, and the maximum volume of first compression chamber is V1,
It is being limited between wherein described second slide plate, the third slide plate and second roller with second air entry
The maximum volume of second compression chamber of connection is V2, institute between second slide plate, the third slide plate and second roller
The maximum volume of the third compression chamber being connected to the third air entry limited is V3,
Wherein, the maximum volume V1 of first compression chamber, the maximum volume V2 of second compression chamber, the third compression chamber
Maximum volume V3 between meet following relational expression：0.03≤V3/V2≤0.20,0.20≤(V3+V1)/V2≤0.4.
4. a kind of refrigeration system, which is characterized in that including：
Rotary compressor according to any one of claim 1-3；
Four-way reversing valve, the four-way reversing valve include the first valve port to the 4th valve port, first valve port with it is described rotary
The gas outlet of compressor is connected, and the 4th valve port is connected with the gas returning port；
Flash vessel, the flash vessel have the first refrigerant opening, gaseous coolant opening and the second refrigerant opening, the flash vessel
Gaseous coolant opening is connected with the third air entry of the first air entry of first cylinder and second cylinder；
Indoor heat exchanger and first throttling device, after the indoor heat exchanger is connected with the first throttling device, the interior
Heat exchanger is connected with second valve port, and the first throttling device is connected with the first refrigerant of flash vessel opening；
Outdoor heat exchanger and second throttling device, after the outdoor heat exchanger is connected with the second throttling device, the outdoor
Heat exchanger is connected with the third valve port, and the second throttling device is connected with the second refrigerant of flash vessel opening.
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| CN201710104688.1A CN106704188B (en) | 2017-02-24 | 2017-02-24 | Rotary compressor and refrigeration system with it |
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| CN201710104688.1A CN106704188B (en) | 2017-02-24 | 2017-02-24 | Rotary compressor and refrigeration system with it |
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| CN106704188B true CN106704188B (en) | 2018-09-11 |
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| CN109026692A (en) * | 2018-08-27 | 2018-12-18 | 珠海凌达压缩机有限公司 | A kind of multi-cylinder pump body structure and compressor |
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| JP2006177194A (en) * | 2004-12-21 | 2006-07-06 | Sanyo Electric Co Ltd | Multiple cylinder rotary compressor |
| CN100572816C (en) * | 2005-10-27 | 2009-12-23 | 乐金电子(天津)电器有限公司 | Variable capacity multi-cylinder rotary compressor and method of operation thereof |
| JP2009235985A (en) * | 2008-03-27 | 2009-10-15 | Toshiba Carrier Corp | Multiple cylinder rotary type compressor and refrigeration cycle device |
| CN102022332B (en) * | 2009-09-15 | 2012-08-22 | 广东美芝制冷设备有限公司 | Capacity-control type double-cylinder rotary compressor and control method thereof |
| CN103742410B (en) * | 2013-12-05 | 2015-11-18 | 广东美芝制冷设备有限公司 | Rotary compressor and compression set, air conditioner |
| TWI499750B (en) * | 2014-06-10 | 2015-09-11 | Round Shine Industrail Co Ltd | A multi-blade rotary compressor and a mathod for multiple cycle |
| CN104963864B (en) * | 2015-07-13 | 2017-10-27 | 广东美芝制冷设备有限公司 | Multi-cylinder rotary air compressor and the refrigerating circulatory device with it |
| CN105545742B (en) * | 2016-02-24 | 2017-10-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Multi-cylinder twin-stage positive displacement compressor system and its control method of operational mode switching |
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