CN105241125B - The method that compressor, refrigeration system and cooling compressor increase gas - Google Patents
The method that compressor, refrigeration system and cooling compressor increase gas Download PDFInfo
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- CN105241125B CN105241125B CN201510757409.2A CN201510757409A CN105241125B CN 105241125 B CN105241125 B CN 105241125B CN 201510757409 A CN201510757409 A CN 201510757409A CN 105241125 B CN105241125 B CN 105241125B
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Abstract
The present invention relates to a kind of method that compressor, refrigeration system and cooling compressor increase gas, wherein, compressor include have respectively with the refrigerant suction port of the outlet of evaporator and the compressor reducer of the refrigerant outlet connected with the entrance of condenser, compressor reducer includes at least two compression units that set from low to high of being arbitrarily downgraded along refrigerant flow direction, the compression chamber of each compression unit is respectively equipped with tonifying Qi entrance, and each tonifying Qi entrance can receive the refrigerant come between flash-pot and condenser.By setting tonifying Qi entrance respectively on the compression chamber for arbitrarily downgrading at least two compression units set from low to high successively, refrigerant can enter the compression chamber of each compression unit by corresponding tonifying Qi inlet selective, so as to increase the refrigerant flow into each compression unit, then the capacity of compressor is increased, improve the refrigerant flow by condenser, the delivery temperature of compressor is reduced, ensures compressor safe operation.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of compressor, refrigeration system and cooling compressor to increase gas
Method.
Background technology
In common heat pump or air-conditioning system, with the reduction of environment temperature, evaporating temperature reduces, in condensation temperature or
In the case that condensing pressure is constant, compressor air-discharging increases with air-breathing compression ratio, beyond ordinary compression system normal operation
Critical value, compressor efficiency and reliability will be reduced rapidly.When working at low ambient temperatures in addition, system evaporating temperature reduces,
Compressor air suction specific volume increases, and gas transmission coefficient reduces, and causes heating capacity to reduce, and system coefficient of performance in heating declines.
Prior art typically increases gas tonifying Qi loop within the compressor, pressure of inspiration(Pi) and exhaust pressure will be in system
Intermediate-pressure gas between power is filled into the working chamber of compressor compresses unit, and power system capacity and efficiency are improved with this.With work
Condition Suck and exhaust pressure changes, and optimal superfeed pressure can also change therewith, and not only air compensation is limited in existing single tonifying Qi loop
The problem of making, and the tonifying Qi effect brought during actual operating mode off-design operating mode can not be overcome to decline, it is therefore desirable to enter
The improvement of one step.
The content of the invention
To overcome above technological deficiency, present invention solves the technical problem that be to provide a kind of compressor, refrigeration system and
The method that cooling compressor increases gas, can increase the capacity of compressor and reduce delivery temperature.
In order to solve the above technical problems, the invention provides a kind of compressor, including with the outlet with evaporator respectively
The compressor reducer of the refrigerant suction port of connection and the refrigerant outlet connected with the entrance of condenser, compressor reducer are included along system
Cryogen flow direction is arbitrarily downgraded at least two compression units set from low to high, and the compression chamber of each compression unit is respectively equipped with benefit
Gas entrance, each tonifying Qi entrance can receive the refrigerant come between flash-pot and condenser, and refrigerant can be optionally
Into the compression chamber of each compression unit, the refrigerant flow of condenser by refrigerant outlet and is flowed to increase.
Further, at least two compression units include the rotor-type compressor of low-pressure stage and the scroll compressor of hiigh pressure stage
Machine.
Present invention also offers a kind of refrigeration system, and it includes condenser, evaporator and above-mentioned compressor, condenser
Pipeline between evaporator is provided with the branch connected with each tonifying Qi entrance, each for the refrigerant in pipeline to be introduced
Tonifying Qi entrance, corresponding on-off valve is provided with each branch, for controlling refrigerant to enter the pressure of each compression unit respectively
Contracting chamber.
Further, refrigeration system also includes flow controller and flash vessel, and the inlet of flash vessel passes through flow controller and condensation
The outlet of device communicates, and the liquid outlet of flash vessel communicates with the entrance of evaporator, and the steam (vapor) outlet of flash vessel communicates with branch so that
The steam generated by flash vessel can respectively enter the compression chamber of each compression unit.
Further, flash vessel includes connecting along refrigerant flow direction and being correspondingly arranged respectively with each compression unit
Sub- flash vessel, each steam (vapor) outlet of the sub- flash vessel set along refrigerant flow direction from upstream to downstream and arbitrarily downgrade by
Each tonifying Qi entrance of at least two compression units of high to Low setting communicates with being corresponding in turn to.
Further, refrigeration system also includes controlling organization and testing agency, and it is single that testing agency can detect each compression
The pressure at expulsion of member simultaneously feeds back to controlling organization, and the break-make of controlling organization control on-off valve is each so that refrigerant to be optionally sent into
The compression chamber of individual compression unit.
Present invention also offers a kind of method for being capable of above-mentioned compressor cooling increasing gas, including：
Detect the first exhaust pressure P of the low-pressure stage compression unit at least two compression units1, and hiigh pressure stage compression
The second exhaust pressure P of unit2；
When default pressure at expulsion Pm is more than second exhaust pressure P2, refrigerant is discharged into by height by corresponding tonifying Qi entrance
Arbitrarily downgrade the compression chamber of compression unit；
When default pressure at expulsion Pm is in first exhaust pressure P1When between second exhaust pressure P2, pass through corresponding tonifying Qi
Refrigerant is discharged into the compression chamber of low-pressure stage compression unit by entrance；
When default pressure at expulsion Pm is less than first exhaust pressure P1When, stop that refrigerant is discharged into compression by tonifying Qi entrance
Machine；
Following relation be present in wherein default pressure at expulsion Pm and compressor pressure of inspiration(Pi) Ps and pressure at expulsion Pd：
Pm=k* (Ps*Pd)0.5, (k=0.8~1.2), k is pressure at expulsion index.
Thus, based on above-mentioned technical proposal, the invention provides the increasing of a kind of compressor, refrigeration system and cooling compressor
The method of gas, by setting tonifying Qi to enter respectively on the compression chamber for arbitrarily downgrading at least two compression units set from low to high successively
Mouthful, refrigerant can by corresponding tonifying Qi inlet selective enter each compression unit compression chamber, so as to increase into
Enter the refrigerant flow of each compression unit, so as to increase the capacity of compressor, improve the cold-producing medium stream by condenser
Amount；Because the refrigerant between evaporator and condenser is without the heat exchange of evaporator, its temperature is relatively entered by evaporator
Enter that the temperature of the refrigerant of compressor is low, so as to reduce the delivery temperature of compressor, ensure compressor safe operation.This hair
The method that the cooling compressor of bright offer increases gas can be utilized rationally come the refrigerant between flash-pot and condenser so that pressure
Contracting machine has higher efficiency.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is only used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is compressor longitudinal profile structure schematic figure of the present invention；
Fig. 2 is the part connection diagram of inventive refrigeration system first embodiment；
Fig. 3 is the part connection diagram of inventive refrigeration system second embodiment；
Fig. 4 is the thermodynamic cyclic process schematic diagram of inventive refrigeration system second embodiment
Description of reference numerals：
1- compressors；2- rotor-type compressors；3- scroll compressors；4- condensers；5- first throttle valves；6- first dodges
Steaming device；7- second throttle；The flash vessels of 8- second；9- choke valves；10- evaporators；The on-off valves of 11- first；The break-makes of 12- second
Valve；13- refrigerant suction ports；14- the first tonifying Qi entrances；15- the second tonifying Qi entrances；16- rotor-type compressor exhaust outlets；17-
Lower flange；18- cylinders；19- pistons；20- upper flanges；21- bent axles；The eccentric part of 21A- bent axles first；21B- bent axles second are eccentric
Portion；22- rotors；23- motor stators；24- housings；25- low pressure compression chambers；26- upper brackets；27- orbiters；28- is quiet
Scroll plate；29- dividing plates；30- seal members；31- hiigh pressure stage compression unit discharge chambers；32- oil supply mechanisms；33- hiigh pressure stages are compressed
Unit exhaust outlet；34- refrigerant outlets；35- high pressure compressed chambers；36- hiigh pressure stage compression unit tonifying Qi circulation passages.
Embodiment
Below by drawings and examples, technical scheme is described in further detail.
The embodiment of the present invention is for the ease of the design to the present invention, the technical problem solved, forms skill
The technical characteristic of art scheme and the technique effect brought have further description.It should be noted that for these embodiment party
The explanation of formula does not form limitation of the invention.In addition, the technology being related in the embodiment of present invention described below is special
As long as sign does not form conflict each other, can is mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of the description present invention and simplifies description, rather than instruction or the dress for implying meaning
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention is protected
The limitation of scope.
Due to the single tonifying Qi loop of existing compressor, not only air compensation is restricted, and can not overcome actual motion
The problem of tonifying Qi effect brought during operating mode off-design operating mode declines, the invention provides a kind of compressor, refrigeration system with
And cooling compressor increases the method for gas, by the compression chamber for arbitrarily downgrading at least two compression units set from low to high successively
Tonifying Qi entrance is set respectively, and refrigerant can enter the compression of each compression unit by corresponding tonifying Qi inlet selective
Chamber, so as to increase the refrigerant flow into each compression unit, so as to increase the capacity of compressor, improve through supercooling
The refrigerant flow of condenser；Because the refrigerant between evaporator and condenser is without the heat exchange of evaporator, its temperature compared with
It is low to enter the temperature of the refrigerant of compressor by evaporator, so as to reduce the delivery temperature of compressor, ensures compression
Machine safe operation.The method that cooling compressor provided by the invention increases gas can be utilized rationally come between flash-pot and condenser
Refrigerant so that compressor has higher efficiency.
In a schematical embodiment of compressor of the present invention, with reference to shown in Fig. 1 and Fig. 2, compressor 1 includes having
Respectively with the refrigerant suction port 13 of the outlet of evaporator 10 and the refrigerant outlet 34 connected with the entrance of condenser 4
Compressor reducer, compressor reducer includes the rotor-type compressor 2 of the low-pressure stage set from low to high of being arbitrarily downgraded along refrigerant flow direction
With at least two compression units of the scroll compressor 3 of hiigh pressure stage, the compression chamber of each compression unit is respectively equipped with tonifying Qi and entered
Mouthful, as shown in figure 1, the high pressure compressed chamber 35 of the scroll compressor 3 of hiigh pressure stage is provided with the first tonifying Qi entrance 14, low-pressure stage turns
The low pressure compression chamber 25 of minor compressor 2 is provided with the second tonifying Qi entrance 15, and each tonifying Qi entrance, which can receive, carrys out flash-pot 10
Refrigerant between condenser 4, refrigerant can be selectively entered the compression chamber of each compression unit, pass through system with increase
Cryogen outlet 34 and the refrigerant flow for flowing to condenser.
In the schematical embodiment, by the pressure of at least two compression units set from low to high successively of arbitrarily downgrading
The the second tonifying Qi entrance 15 and vortex of tonifying Qi entrance, i.e. the low pressure compression chamber 25 of rotor-type compressor 2 are set respectively on contracting chamber
First tonifying Qi entrance 14 of the high pressure compressed chamber 35 of compressor 3, as shown in figure 1, the first tonifying Qi entrance 14 is by being arranged on high pressure
Airtight passage 36 in the fixed scroll 28 of the screw compressor 3 of level, connects with the high pressure compressed chamber 35 of the centre of screw compressor 3
Logical, the refrigerant come between flash-pot 10 and condenser 4 can enter rotator type optionally through the second tonifying Qi entrance 15
The low pressure compression chamber 25 of compressor 2, or the high pressure compressed chamber 35 by the first tonifying Qi entrance 14 into scroll compressor 3, when
Can also so enter low pressure compression chamber 25 and high pressure compressed chamber 35 simultaneously, the refrigerant additionally entered from tonifying Qi entrance increase into
The refrigerant flow of the compression unit entered, so as to increase the capacity of compressor, improve the cold-producing medium stream by condenser 4
Amount, improve the heating capacity of condenser 4；Because the refrigerant between evaporator 10 and condenser 4 is without the heat friendship of evaporator 4
Change, its temperature is low compared with the temperature of the refrigerant of compressor is entered by evaporator 4, so as to reduce the exhaust temperature of compressor
Degree, ensure compressor safe operation.
It should be noted that at least two compression units in the schematical embodiment include two compression units be for
It is easy to the structure for illustrating compressor, at least two compression units can also be multiple compressions set from low to high successively of arbitrarily downgrading
Unit.Wherein, the rotor-type compressor 2 from low-pressure stage and the scroll compressor 3 of hiigh pressure stage can as two stages of compression unit
Make full use of rotor-type compressor simple in construction and the high performance advantage of scroll compressor, compared to common two stages of compression equipment
There is the advantages of compact-sized, good reliability and compression performance are high.As shown in figure 1, pass through first by the refrigerant of evaporator 10
Refrigerant suction port 13 enters the rotor compressor 2 of low-pressure stage, the low pressure pressure being put into through overcompression heel row in closed housing 24
Contracting chamber 25, the refrigerant after the rotor compressor 2 by low-pressure stage compresses is sucked by the scroll compressor 3 of hiigh pressure stage, and passes through
High pressure compressed chamber 35 is discharged to after overcompression, discharging compressor 1 by refrigerant outlet 34 afterwards enters condenser 4.High pressure
Separated between compression chamber 35 and low pressure compression chamber 25 by dividing plate 29 and seal member 30.
The present invention has also correspondingly provided a kind of refrigeration system, as shown in Figure 3 and Figure 4, refrigeration system include condenser 4,
The compressor 1 of evaporator 10 and above-described embodiment, the pipeline between condenser 4 and evaporator 10 are provided with to enter with the first tonifying Qi
Mouthfuls 14 and second branch that communicates of tonifying Qi entrance 15, for the refrigerant in pipeline to be introduced into each tonifying Qi entrance, with
The branch that first tonifying Qi entrance 14 communicates is provided with the first on-off valve 11, is provided with the branch communicated with the second tonifying Qi entrance 15
Second on-off valve 12, for controlling refrigerant to enter the break-make of high pressure compressed chamber 35 and low pressure compression chamber 25, refrigerant energy respectively
High pressure compressed chamber 35 is enough entered by the first on-off valve 11 and the first tonifying Qi entrance 14, can also pass through the second on-off valve 12 and the
Two tonifying Qi entrances 15 enter low pressure compression chamber 25, on the one hand, the refrigerant additionally entered from tonifying Qi entrance increases the pressure of entrance
The refrigerant flow of contracting unit, so as to increase the capacity of compressor, the refrigerant flow by condenser 4 is improved, improved
The heating capacity of condenser 4；On the other hand, because the refrigerant between evaporator 10 and condenser 4 is without the heat friendship of evaporator 4
Change, its temperature is low compared with the temperature of the refrigerant of compressor is entered by evaporator 4, so as to reduce the exhaust temperature of compressor
Degree, ensure compressor safe operation.In refrigeration or the less operating mode of pressure ratio, the first on-off valve 11 or the can be selectively closed off
Two on-off valves 12 simultaneously close off two on-off valves, so as to ensure that compression machine is higher with possessing under light load and cooling condition
Efficiency.
As the first preferred embodiment of inventive refrigeration system, with reference to shown in Fig. 1 and Fig. 3, refrigeration system also includes section
Stream device and flash vessel, flow controller include first throttle valve 5, and flash vessel includes the first flash vessel 6, the inlet of the first flash vessel 6
Communicated by first throttle valve 5 with the outlet of condenser 4, the liquid outlet of the first flash vessel 6 is by setting choke valve 9 and evaporator
10 entrance communicates, and the steam (vapor) outlet of the first flash vessel 6 is divided into two-way and connected respectively and the first tonifying Qi entrance 14 and the second tonifying Qi
The branch that entrance 15 communicates so that the steam generated by the first flash vessel 6 can respectively enter low pressure compression chamber 25 or high pressure pressure
Contracting chamber 35, in the case where not improving system cost, obtain preferable heating capacity and performance.As shown in Fig. 2 from condenser 4
The refrigerant that liquid refrigerant out becomes gas-liquid mixture phase after the throttling of first throttle valve 5 enters flash vessel 6, evaporates
The low saturated vapor of ratio pressure at expulsion out can select add to scroll compression by the first tonifying Qi entrance 14 according to operating condition
In the high pressure compressed chamber 35 of contracting machine 3, or add to by the second tonifying Qi entrance 15 the low pressure compression chamber 25 of rotor compressor 2
It is interior.Because enter tonifying Qi entrance is saturated vapor, its temperature is lower compared with compressor compresses intracavitary refrigerant temperature, so as to
The delivery temperature of compressor is reduced, ensures compressor safe operation.In addition, under especially severe operating mode, the first tonifying Qi entrance
14 can also fill into the liquid refrigerant by throttling, and the second tonifying Qi entrance 15 still fills into saturated vapor, can so be made in lifting
While heat, delivery temperature is more effectively reduced, it is ensured that compressor reliability service.
As the second preferred embodiment of inventive refrigeration system, flash vessel include along the series connection of refrigerant flow direction and
The sub- flash vessel being correspondingly arranged respectively with each compression unit, the son set along refrigerant flow direction from upstream to downstream dodge
Each tonifying Qi entrance of each steam (vapor) outlet of steaming device and at least two compression units set from high to low of arbitrarily downgrading difference is successively
Accordingly communicate, as shown in figure 3, unlike above-mentioned first preferred embodiment, sub- flash vessel includes first positioned at upstream
Flash vessel 6 and the second flash vessel 8 positioned at downstream, flow controller include being separately positioned on the first flash vessel 6 and the second flash vessel 8
First throttle valve 5 and second throttle 7 before inlet, the first flash vessel 6 and the second flash vessel 8 are in be connected in series, and first
The steam (vapor) outlet of flash vessel 6 is communicated by the first on-off valve 11 with the first tonifying Qi entrance 14, and the steam (vapor) outlet of the second flash vessel 8 leads to
Cross the second on-off valve 12 to communicate with the second tonifying Qi entrance 15, the liquid refrigerant come out from system condenser 4, by first throttle
Valve 5 enters the first flash vessel 6 after throttling for the first time, and the low saturated vapor of the ratio pressure at expulsion being evaporated is entered by the first tonifying Qi
Mouth 14 is added in the high pressure compressed chamber 35 of screw compressor 3.Liquid refrigerant in first flash vessel 6 passes through second throttle
Enter the second flash vessel 8 after 7 second of throttling, the lower saturated vapor of the pressure being evaporated is mended by the second tonifying Qi entrance 15
It is charged in the low pressure compression chamber 25 of rotor compressor 2.By tonifying Qi twice, the capacity of compressor 1 increases, can be to greatest extent
Ground improves the refrigerant flow by condenser 4, so as to improve heating capacity.Due to the refrigerant supplemented from the second tonifying Qi entrance 15
By throttling twice, compared to existing air compensating system, its tonifying Qi temperature is lower, can preferably cool down motor 23, lifting electricity
The efficiency of machine 23.
Fig. 4 is the thermodynamic cyclic process of the compressor of the second preferred embodiment, and wherein a-b sections are rotor compressor 2
Compression stage, enter screw compressor 3 after being mixed with the steam of the second tonifying Qi of k-l sections entrance 15.C-d sections are screw compressor 3
The first compression stage, with continuing to compress in screw compressor 3 after the gas mixing of the first tonifying Qi of h-i sections entrance 14, i.e. e-f
Section process.F-g sections are that gaseous refrigerant enters the heat release of condenser 4 and turns into liquid refrigerant process, then by throttling into the
One flash vessel 6, and isolate saturated vapor and saturated liquid, i.e. g-h processes.The saturated vapor isolated enters into the first tonifying Qi
Mouthful, and the liquid refrigerant isolated enters the second flash vessel 8 in the j-k stages by second throttling, and isolate pressure with
Temperature lower saturated vapor and saturated liquid.The saturated vapor isolated enters the second tonifying Qi entrance 15, and the liquid isolated
State refrigerant is evaporated to gaseous refrigerant after throttling in the m-n stages into evaporator 10, subsequently enters in compressor 1.
In the embodiment of above-mentioned refrigeration system, refrigeration system can also preferably include controlling organization and testing agency,
Testing agency can detect the pressure at expulsion of each compression unit and feed back to controlling organization, and controlling organization control on-off valve leads to
Break so that refrigerant to be optionally sent into the compression chamber of each compression unit, by the cooperation for setting testing agency and controlling organization
To realize the Automated condtrol of tonifying Qi.
The present invention has further related to a kind of method that can increase gas to cooling compressor, including：
Detect the first exhaust pressure P of the low-pressure stage compression unit at least two compression units1, and hiigh pressure stage compression
The second exhaust pressure P of unit2；
When default pressure at expulsion Pm is more than second exhaust pressure P2When, refrigerant is discharged into by height by corresponding tonifying Qi entrance
Arbitrarily downgrade the compression chamber of compression unit；
When default pressure at expulsion Pm is in first exhaust pressure P1With second exhaust pressure P2Between when, pass through corresponding tonifying Qi
Refrigerant is discharged into the compression chamber of low-pressure stage compression unit by entrance；
When default pressure at expulsion Pm is less than first exhaust pressure P1When, stop that refrigerant is discharged into compression by tonifying Qi entrance
Machine；
Following relation be present in wherein default pressure at expulsion Pm and compressor pressure of inspiration(Pi) Ps and pressure at expulsion Pd：
Pm=k* (Ps*Pd)0.5, (k=0.8~1.2), k is pressure at expulsion index.
So that at least two compression units is the rotor-type compressors 2 of low-pressure stage and the scroll compressor 3 of hiigh pressure stage as an example,
Generally optimal superfeed pressure Pm=k* (Ps*Pd)0.5, (k=0.8~1.2), k is pressure at expulsion index.
And the pressure at expulsion (pressure i.e. in low pressure compression chamber 25) of low-pressure stage rotor compressor 2 is approximately：
P1≈Ps*(Vs2/Vs1)λ
Wherein, Vs1、Vs2Respectively low-pressure stage and high pressure stage compressor aspirated volume, λ are cake compressibility.
Pressure is approximately in the high pressure compressed chamber 35 of the tonifying Qi position of hiigh pressure stage screw compressor 3：
P2≈P1*(Vs2/V2)λ。
Wherein, V2For the volume of high pressure compressed chamber 35.
Because tonifying Qi position can change with the change of operating mode Suck and exhaust pressure, actual tonifying Qi pressure can be ensured with this method
Power is always positioned near optimal superfeed pressure, therefore compressor 1 can be respectively provided with higher tonifying Qi effect in the condition range of broadness
Fruit and performance.
Illustrate that the control process of the first on-off valve 11 and the second on-off valve 12 is as follows by taking second embodiment as an example below：
Work as Pm<P1When, due to be vented it is smaller with pressure of inspiration(Pi), system loading is low, now can not tonifying Qi, can by first lead to
The disconnected on-off valve 12 of valve 11 and second closes the first tonifying Qi entrance 14 and the second tonifying Qi entrance 15.
Work as P1<Pm<P2When, the second on-off valve 12 is opened, the first on-off valve 11 is closed, will by the second tonifying Qi entrance 15
Refrigerant is added in low pressure compression chamber 25.
Work as Pm>P2When, the first on-off valve 11 is opened, the second on-off valve 12 is closed, will system by the first tonifying Qi entrance 14
Cryogen is added in the compression chamber 35 of screw compressor 3.
Above in association with embodiment be described in detail for embodiments of the present invention, but the present invention is not limited to be retouched
The embodiment stated.For example, at least two compression units can also be multiple compression units set from low to high successively of arbitrarily downgrading,
For a person skilled in the art, in the case where not departing from the principle of the present invention and connotation to these embodiments
A variety of changes, modification, equivalence replacement and modification is carried out to still fall within protection scope of the present invention.
Claims (4)
1. a kind of refrigeration system, it is characterised in that including condenser (4), evaporator (10) and compressor (1), the compression
Machine (1) includes having the entrance with the refrigerant suction port (13) of the outlet of evaporator (10) and with condenser (4) respectively
The compressor reducer of the refrigerant outlet (34) of connection, the compressor reducer include arbitrarily downgrading along refrigerant flow direction setting from low to high
At least two compression units put, the compression chamber of each compression unit are respectively equipped with tonifying Qi entrance, and each tonifying Qi enters
Mouth can receive the refrigerant between the evaporator and the condenser, and the refrigerant can be selectively entered respectively
The compression chamber of the individual compression unit, to increase by the refrigerant outlet (34) and flow to the system of the condenser (4)
Cryogen flow, the pipeline between the condenser (4) and the evaporator (10) is provided with to be connected with each tonifying Qi entrance
Branch, for the refrigerant in the pipeline to be introduced into each tonifying Qi entrance, be provided with each branch corresponding
On-off valve, for control respectively the refrigerant enter each compression unit compression chamber break-make；
The refrigeration system also includes flow controller and flash vessel, the inlet of the flash vessel by the flow controller with it is described cold
The outlet of condenser (4) communicates, and the liquid outlet of the flash vessel communicates with the entrance of the evaporator (10), the steaming of the flash vessel
Vapor outlet communicates with the branch so that the steam generated by the flash vessel can respectively enter each compression unit
Compression chamber；
The flash vessel includes the son connected along refrigerant flow direction and be correspondingly arranged respectively with each compression unit
Flash vessel, each steam (vapor) outlet of the sub- flash vessel set along refrigerant flow direction from upstream to downstream and arbitrarily downgrade by
Each tonifying Qi entrance of at least two compression unit of high to Low setting communicates with being corresponding in turn to.
2. refrigeration system according to claim 1, it is characterised in that at least two compression unit includes low-pressure stage
The scroll compressor (3) of rotor-type compressor (2) and hiigh pressure stage.
3. refrigeration system according to claim 1, it is characterised in that also including controlling organization and testing agency, the inspection
The pressure at expulsion of each compression unit can be detected and feed back to controlling organization by surveying mechanism, described in the controlling organization control
The break-make of on-off valve is so that the refrigerant to be optionally sent into the compression chamber of each compression unit.
4. a kind of method that can increase gas to the cooling compressor based on the refrigeration system described in claim 1, including：
Detect the first exhaust pressure P of the low-pressure stage compression unit at least two compression units1, and hiigh pressure stage compression unit
Second exhaust pressure P2；
When default pressure at expulsion Pm is more than second exhaust pressure P2, the refrigerant is arranged by the corresponding tonifying Qi entrance
Enter the compression chamber of the hiigh pressure stage compression unit；
When default pressure at expulsion Pm is in first exhaust pressure P1When between second exhaust pressure P2, pass through the corresponding tonifying Qi
Refrigerant is discharged into the compression chamber of the low-pressure stage compression unit by entrance；
When default pressure at expulsion Pm is less than first exhaust pressure P1When, the refrigerant is discharged into by stopping by the tonifying Qi entrance
The compressor；
Following relation be present in wherein default pressure at expulsion Pm and the compressor pressure of inspiration(Pi) Ps and pressure at expulsion Pd：
Pm=k* (Ps*Pd)0.5, (k=0.8~1.2), k is pressure at expulsion index.
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| JP6670645B2 (en) * | 2016-03-16 | 2020-03-25 | 株式会社日立産機システム | Multi-stage compressor |
| CN105953386B (en) * | 2016-05-30 | 2019-06-04 | 珠海格力电器股份有限公司 | The control method and device of twin-stage Gas-supplying enthalpy-increasing system |
| CN109162923A (en) * | 2018-09-13 | 2019-01-08 | 格力电器（杭州）有限公司 | The control method of compressor, air-conditioning system and compressor |
| CN112747511B (en) * | 2019-10-31 | 2022-03-01 | 广东美的白色家电技术创新中心有限公司 | Liquid storage and oil distribution device, compressor assembly, heat exchange system and electrical equipment |
| CN112747509B (en) * | 2019-10-31 | 2023-01-06 | 广东美的白色家电技术创新中心有限公司 | Liquid storage and oil distribution device, compressor assembly, heat exchange system and electrical equipment |
| CN112747510B (en) * | 2019-10-31 | 2023-01-06 | 广东美的白色家电技术创新中心有限公司 | Liquid storage and oil distribution device, compressor assembly, heat exchange system and electrical equipment |
| CN111102190B (en) * | 2019-11-25 | 2024-01-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, air conditioning system and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523130A (en) * | 2006-10-02 | 2009-09-02 | 艾默生环境优化技术有限公司 | Injection system and method for refrigeration system compressor |
| CN101532496A (en) * | 2008-03-11 | 2009-09-16 | 上海日立电器有限公司 | Capacity-adjustable type rotor compressor system with an economizer |
| CN104121192A (en) * | 2013-04-24 | 2014-10-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage compressor |
| CN104154687A (en) * | 2014-08-22 | 2014-11-19 | 珠海格力电器股份有限公司 | Flash tank and air conditioner with flash tank |
| JP5627713B2 (en) * | 2011-01-31 | 2014-11-19 | 三菱電機株式会社 | Air conditioner |
| CN205102448U (en) * | 2015-11-06 | 2016-03-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigerating system |
-
2015
- 2015-11-06 CN CN201510757409.2A patent/CN105241125B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523130A (en) * | 2006-10-02 | 2009-09-02 | 艾默生环境优化技术有限公司 | Injection system and method for refrigeration system compressor |
| CN101532496A (en) * | 2008-03-11 | 2009-09-16 | 上海日立电器有限公司 | Capacity-adjustable type rotor compressor system with an economizer |
| JP5627713B2 (en) * | 2011-01-31 | 2014-11-19 | 三菱電機株式会社 | Air conditioner |
| CN104121192A (en) * | 2013-04-24 | 2014-10-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage compressor |
| CN104154687A (en) * | 2014-08-22 | 2014-11-19 | 珠海格力电器股份有限公司 | Flash tank and air conditioner with flash tank |
| CN205102448U (en) * | 2015-11-06 | 2016-03-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigerating system |
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| CN105241125A (en) | 2016-01-13 |
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