CN105333656B - A kind of air-conditioning system with enthalpy increased through vapor injection and air conditioner - Google Patents
A kind of air-conditioning system with enthalpy increased through vapor injection and air conditioner Download PDFInfo
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- CN105333656B CN105333656B CN201410325137.4A CN201410325137A CN105333656B CN 105333656 B CN105333656 B CN 105333656B CN 201410325137 A CN201410325137 A CN 201410325137A CN 105333656 B CN105333656 B CN 105333656B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The embodiment of the invention discloses a kind of air-conditioning system with enthalpy increased through vapor injection and air conditioners; the generation for the problem of generating period sexual abnormality mechanical noise with the caused air-conditioning system with enthalpy increased through vapor injection of periodic pressure pulsation of the inner cavity generation to avoid compressor, and cannot flexibly controlling the air compensation in tonifying Qi circuit.The system includes：Compressor, tonifying Qi circuit and control system；The tonifying Qi circuit includes：Flash vessel and the first electric expansion valve；One end of first electric expansion valve is connect with the gas supplementing opening of the compressor, and the other end of first electric expansion valve is connected with the tonifying Qi outlet of the flash vessel；First electric expansion valve receives the control instruction that the control system is sent；First electric expansion valve adjusts aperture according to the control instruction.The embodiment of the present invention is suitable for air-conditioning and Refrigeration Engineering technical field.
Description
Technical field
The present invention relates to air-conditioning and Refrigeration Engineering technical field more particularly to a kind of air-conditioning system with enthalpy increased through vapor injection and air-conditionings
Device.
Background technology
Air-conditioning system with enthalpy increased through vapor injection is used widely because it can improve refrigerating/heating effect.Gas-supplying enthalpy-increasing air-conditioning
System refers to：Common compressor in conventional air conditioning system is changed to the compressor with Gas-supplying enthalpy-increasing function (hereinafter referred to
" compressor "), and increase the air-conditioning system formed behind tonifying Qi circuit on the basis of major loop.
As shown in Figure 1, being a kind of structural schematic diagram of air-conditioning system with enthalpy increased through vapor injection.Wherein, tonifying Qi circuit is by flash vessel 11
It is constituted with solenoid valve 12；Major loop includes compressor 13, condenser (Fig. 1 is not shown), evaporator (Fig. 1 is not shown) etc..Flash distillation
Two in/out mouths of device 11 are connect with major loop respectively, and the gas supplementing opening of flash vessel 11 is connect with one end of solenoid valve 12, solenoid valve
12 other end is connect with the gas supplementing opening of compressor 13.
When refrigeration cycle, solenoid valve 12 is closed, and does not execute Gas-supplying enthalpy-increasing process.When heating cycle, solenoid valve
12 are in open state, and Gas-supplying enthalpy-increasing process includes：The liquid refrigerant for the low-temp low-pressure that compressor 13 exports passes through major loop
Into flash vessel 11, the liquid refrigerant of part low-temp low-pressure becomes the gaseous state of low-temp low-pressure after the flash distillation of flash vessel 11 effect
Refrigerant；The gaseous refrigerant of these low-temp low-pressures enters compressor 13 by solenoid valve 12.
Since one end of solenoid valve 12 is connect with the gas supplementing opening of compressor 13, gas supplementing opening and the compressor 13 of compressor 13
Inner cavity connects；Therefore, at following two kinds, the valve body of solenoid valve 12 passes through the gas supplementing opening and compressor 13 of compressor 13
Inner cavity is directly connected to.Wherein, which is：Situation 1, compressor 13 gas supplementing opening at check-valves, solenoid valve 12 are installed
In open state；Situation 2, compressor 13 gas supplementing opening at check-valves is not installed, solenoid valve 12 is in open state or closing
State.
Since during refrigerating/heating recycles, the inner cavity of compressor 13 will produce periodic pressure pulsation, therefore,
In above-mentioned two situations, periodic pressure pulsation can act directly on the spool of solenoid valve 12 so that solenoid valve 12
Spool generates period sexual abnormality mechanical noise by repeatedly open-top and reset, so as to cause air-conditioning system with enthalpy increased through vapor injection.In addition, electromagnetism
Valve 12 only opens and closes function, causes flexibly control the air compensation in tonifying Qi circuit.
Invention content
A kind of air-conditioning system with enthalpy increased through vapor injection of the embodiment of the present invention offer and air conditioner, with the inner cavity production to avoid compressor
Air-conditioning system with enthalpy increased through vapor injection generates period sexual abnormality mechanical noise caused by raw periodic pressure pulsation, and cannot flexibly control
The generation of the problem of air compensation in tonifying Qi circuit processed.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, a kind of air-conditioning system with enthalpy increased through vapor injection is provided, including：Compressor, tonifying Qi circuit and control system；It is described
Tonifying Qi circuit includes：Flash vessel and the first electric expansion valve；The benefit of one end and the compressor of first electric expansion valve
Gas port connects, and the other end of first electric expansion valve is connect with the gas supplementing opening of the flash vessel；
First electric expansion valve receives the control instruction that the control system is sent；
First electric expansion valve adjusts aperture according to the control instruction.
With reference to first aspect, in the first possible embodiment, the control system includes：Controller, transmitter；
The controller determines the target aperture of first electric expansion valve on a preset condition based；
The transmitter sends the control instruction for including the target aperture to first electric expansion valve；
First electric expansion valve adjusts aperture according to the control instruction, specifically includes：
Current aperture regulation is the target aperture according to the control instruction by first electric expansion valve.
The possible embodiment of with reference to first aspect the first, in second of possible embodiment,
When refrigeration cycle, the preset condition is：The temperature of outdoor environment is greater than or equal to first threshold, and/or condensation
The condensation temperature of device is greater than or equal to second threshold；Or,
When heating cycle, the preset condition is：The temperature of outdoor environment is less than or equal to third threshold value.
The possible embodiment of with reference to first aspect the first or second of possible embodiment are possible at the third
Embodiment in, the controller on a preset condition based, determines the target aperture of first electric expansion valve, specific to wrap
It includes：
When refrigeration cycle, according to the running frequency F of the compressor, the temperature T of outdoor environmentOuter shroudWith the condensation of condenser pipe
Temperature TCondensationDetermine the target aperture of first electric expansion valve；Or,
When heating cycle, according to the condensation temperature T of the running frequency F of the compressor and condenser pipeCondensationDetermine described first
The target aperture of electric expansion valve.
The third possible embodiment with reference to first aspect, in the 4th kind of possible embodiment,
When the refrigeration cycle, according to the running frequency F of the compressor, the temperature T of outdoor environmentOuter shroudWith condenser pipe
Condensation temperature TCondensationThe target aperture for determining first electric expansion valve, specifically includes：
When refrigeration cycle, according to formula S TEP=K1 × F+K2 × TOuter shroud+K3×TCondensation+ K4 determines first electronic expansion
The target aperture STEP of valve；Or,
When the heating cycle, according to the condensation temperature T of the running frequency F of the compressor and condenser pipeCondensationDescribed in determination
The target aperture of first electric expansion valve, specifically includes：
When heating cycle, according to formula S TEP=K5 × F+K6 × TOuter shroud+ K7 determines the target of first electric expansion valve
Aperture STEP；
Wherein, described K1, K2, K3, K4, K5, K6, K7 are constant.
The 4th kind of possible embodiment with reference to first aspect, in the 5th kind of possible embodiment,
0 < K1≤30,0 < K2≤20,0 K3≤30 <, -100≤K4≤200；Or,
0 < K5≤30,0 K6≤20 <, -100≤K7≤200.
With reference to first aspect, the possible embodiment of the first of first aspect is any to the 5th kind of possible embodiment
Kind, in the 6th kind of possible embodiment,
The value range of the K is [0.85,1.15]；
Wherein, the PIt mendsFor the pressure of the gas supplementing opening of the flash vessel, the PIt inhalesFor the pressure of the air entry of the compressor
Power, the PRowFor the pressure of the exhaust outlet of the compressor.
With reference to first aspect, the possible embodiment of the first of first aspect is any to the 6th kind of possible embodiment
Kind, in the 7th kind of possible embodiment, the air-conditioning system further includes：Capillary, the second electric expansion valve, condenser and
Evaporator；
The capillary is arranged between the flash vessel and the condenser；
Second electric expansion valve is arranged between the flash vessel and the evaporator.
Second aspect provides a kind of air conditioner, including any air-conditioning system with enthalpy increased through vapor injection that above-mentioned first aspect provides.
Based on the above-mentioned technical proposal, it is replaced using the first electric expansion valve in the tonifying Qi circuit of air-conditioning system with enthalpy increased through vapor injection existing
There is the solenoid valve in technology, since the spool of the first electric expansion valve is helical structure, there is reverse locking power, therefore can keep away
It is open-top to exempt from the periodic pressure generated by the inner cavity of compressor pulsation, and then air-conditioning system with enthalpy increased through vapor injection and air conditioner can be avoided
Generate period sexual abnormality mechanical noise.Simultaneously as the aperture of the first expansion valve can be adjusted, therefore it can flexibly control tonifying Qi
Air compensation in the tonifying Qi circuit of increasing enthalpy air-conditioning system and air conditioner.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of air-conditioning system with enthalpy increased through vapor injection schematic diagram in the prior art；
Fig. 2 is a kind of air-conditioning system with enthalpy increased through vapor injection schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the control method of air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of the control system of air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention；
Fig. 5 is another air-conditioning system with enthalpy increased through vapor injection schematic diagram provided in an embodiment of the present invention；
Fig. 6 is the flow chart of the control method of another air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention；
Fig. 7 is the flow chart of the control method of another air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The terms "and/or", only a kind of incidence relation of description affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate：Individualism A exists simultaneously A and B, these three situations of individualism B." multiple " refer to
Two or more.
As shown in Fig. 2, be a kind of air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention, including：Major loop, tonifying Qi are returned
Road and control system.Wherein, which includes compressor 21；The tonifying Qi circuit includes flash vessel 22 and the first electric expansion valve
23.Compressor 21 includes：Air entry 211, exhaust outlet 212 and gas supplementing opening 213；Flash vessel 22 includes：First in/out mouth 221,
Two in/out mouths 222 and gas supplementing opening 223.One end of first electric expansion valve 23 and the gas supplementing opening 213 of compressor connect, the first electricity
The other end of sub- expansion valve 23 and the gas supplementing opening 223 of flash vessel connect.
Illustratively, the first electric expansion valve 23 can be fully closed type electric expansion valve.Compressor 21 is to increase with tonifying Qi
The compressor of enthalpy function.The embodiment of the present invention is to including in addition to compressor 21 in the major loop of air-conditioning system with enthalpy increased through vapor injection
Connection relation is without limiting between other devices and device.
Since the aperture of the first electric expansion valve 23 can be adjusted, an embodiment of the present invention provides one kind based on above-mentioned
The control method of air-conditioning system with enthalpy increased through vapor injection, as shown in figure 3, including：
301：First electric expansion valve 23 receives the control instruction that control system is sent.
302：First electric expansion valve 23 adjusts aperture according to control instruction.
Optionally, as shown in figure 4, control system includes：Controller 24 and transmitter 25；Above-mentioned control method further includes：
Controller 24 determines the target aperture of the first electric expansion valve 23 on a preset condition based；
Transmitter 25 sends the control instruction for including target aperture to the first electric expansion valve 23.
In this case, step 301 may include：The control instruction that first electric expansion valve, 23 receiver transmitter 25 is sent；
Step 302 may include：Current aperture regulation is target aperture according to control instruction by the first electric expansion valve 23.
Illustratively, the embodiment of the present invention to the setting means of " preset condition " without limiting, for example, refrigeration cycle
When, preset condition can be：The temperature of outdoor environment is greater than or equal to first threshold and/or the condensation temperature of condenser is more than
Or it is equal to second threshold；Or, when heating cycle, preset condition can be：The temperature of outdoor environment is less than or equal to third threshold value.
The embodiment of the present invention to controller 24 determine target aperture method without limit, for example, may be used as follows
Method determines：
1) when refrigeration cycle, according to the running frequency F of compressor, the temperature T of outdoor environmentOuter shroudWith the condensation temperature of condenser pipe
Spend TCondensationDetermine the target aperture of the first electric expansion valve 23.
Illustratively, the embodiment of the present invention is to method 1) implementation method without limit.Such as：In refrigeration cycle,
It can be according to formula S TEP=K1 × F+K2 × TOuter shroud+K3×TCondensation+ K4 (is expressed as：Formula 1) determine the first electric expansion valve 23
Target aperture STEP.Wherein, K1, K2, K3, K4 are constant；The embodiment of the present invention is to the value of K1, K2, K3, K4 without limit
It is fixed；In order to make air-conditioning system with enthalpy increased through vapor injection reach best air compensation, it is preferred that the range of K1, K2, K3, K4 is respectively：0 < K1
≤ 30,0 < K2≤20,0 K3≤30 <, -100≤K4≤200.
2) when heating cycle, according to the condensation temperature T of the running frequency F of compressor and condenser pipeCondensationDetermine that the first electronics is swollen
The target aperture of swollen valve.
Illustratively, the embodiment of the present invention is to method 2) implementation method without limit.Such as：It, can when heating cycle
With according to formula S TEP=K5 × F+K6 × TOuter shroud+ K7 (is expressed as：Formula 2) determine the target aperture of the first electric expansion valve 23
STEP.Wherein, K5, K6, K7 are constant；The embodiment of the present invention is to the value of K5, K6, K7 without limiting；In order to make tonifying Qi increase
Enthalpy air-conditioning system reaches best air compensation, it is preferred that the value range of K5, K6, K7 is respectively：0 < K5≤30,0 < K6≤
20, -100≤K7≤200.
When specific implementation, control system can pass through the actual temperature of indoor environment during refrigerating/heating recycles
F is obtained with the difference of target temperature set by user.It is passed in addition, air-conditioning system with enthalpy increased through vapor injection can also include outdoor environment temperature
Sensor, for detecting outdoor environment temperature T during refrigerating/heating recyclesOuter shroud；Optionally, which senses
Device can be arranged in the outside of condenser.Air-conditioning system with enthalpy increased through vapor injection can also include condensation sensor, in refrigerating/heating
The condensation temperature T of condenser pipe is detected during cycleCondensation；Optionally, which can be arranged in condenser
Portion.
It should be noted that when the STEP calculated according to above-mentioned formula 1 or formula 2 is equal to or more than the first expansion valve 23
When maximum opening, then the target aperture for the first electric expansion valve 23 that controller 24 determines is the maximum of the first electric expansion valve 23
Aperture.Illustratively, it is assumed that the maximum opening of the first electric expansion valve 23 is 500 steps, then when according to above-mentioned formula 1 or formula 2
When the STEP of calculating is equal to or more than 500 step, the target aperture for the first electric expansion valve 23 that controller 24 determines is 500 steps.
It is optional in the another kind of the embodiment of the present invention in order to make the tonifying Qi effect of air-conditioning system with enthalpy increased through vapor injection reach best
In realization method,The value range of K is [0.85,1.15]；Wherein, PIt mendsFor the gas supplementing opening of flash vessel
223 pressure, PIt inhalesFor the pressure of the air entry 211 of compressor, PRowFor the pressure of the exhaust outlet 212 of compressor.
Illustratively, PIt mends、PIt inhalesAnd PRowSize determined by the throttling set in major loop；It, can when therefore implementing
With by selecting suitable throttling set so that formulaIn K values belong to [0.85,1.15], to make
The tonifying Qi effect of air-conditioning system with enthalpy increased through vapor injection reaches best.
In order to make the tonifying Qi effect of air-conditioning system with enthalpy increased through vapor injection reach best, in a kind of realization method of the embodiment of the present invention
In, as shown in figure 5, on the basis of air-conditioning system with enthalpy increased through vapor injection shown in Fig. 2, major loop further includes：The 26, second electricity of capillary
Sub- expansion valve 27, condenser 28 and evaporator 29 and four-way valve 30；Wherein, it is returned based on capillary 26 and the second electric expansion valve 27
The throttling set on road, one end of capillary 26 are connect with the first in/out mouth 221 of flash vessel 22, the other end of capillary 26 with
Condenser 28 connects；One end of second electric expansion valve 27 is connect with the second in/out mouth 222 of flash vessel 22.
Illustratively, in air-conditioning system with enthalpy increased through vapor injection shown in Fig. 5, PIt mendsMainly determined by 26 internal diameter of capillary and length
It is fixed, PIt inhalesAnd PRowMainly determined by the aperture of the second electric expansion valve 27.Under normal circumstances, whenWhen between 4~10, in conjunction with
Above-mentioned formulaIt can obtain following result：PRowWith PIt mendsDifference be more than PIt mendsWith PIt inhalesDifference, therefore by hair
Tubule 26 is arranged between flash vessel 22 and condenser 28, the setting of the second electric expansion valve 27 flash vessel 22 and evaporator 29 it
Between, the tonifying Qi effect of air-conditioning system with enthalpy increased through vapor injection can be made to reach best.
Below based on air-conditioning system with enthalpy increased through vapor injection shown in fig. 5, the flow of refrigeration cycle and heating cycle is illustrated：
When refrigeration cycle, the gaseous refrigerant for the high temperature and pressure that compressor 21 generates is through four-way valve 30, condenser 28, capillary
Pipe 26 becomes the gas-liquid two-phase cold-producing medium of low-temp low-pressure, and enters flash vessel 22；After flash vessel 22, low-temp low-pressure is isolated
Gaseous refrigerant system enters compressor 21 through the first electric expansion valve 23；The liquid refrigerant of low-temp low-pressure is flowed out from flash vessel 22
After the second electric expansion valve 27 further decompression throttling, the gaseous refrigerant for becoming low-temp low-pressure is evaporated in evaporator 29,
Enter compressor 21 through four-way valve 30 again；The low-temp low-pressure that compressor 21 will enter from four-way valve 30 and the first electric expansion valve 23
Gaseous refrigerant generate high temperature and pressure gaseous refrigerant, recycled with this.
When heating cycle, the gaseous refrigerant for the high temperature and pressure that compressor 21 generates is through four-way valve 30, evaporator 29, second
Electric expansion valve 27 becomes the gas-liquid two-phase cold-producing medium of low-temp low-pressure, and enters flash vessel 22；After flash vessel 22, isolate low
The gaseous refrigerant of warm low pressure enters compressor 21 through the first electric expansion valve 23；The liquid refrigerant of low-temp low-pressure is from flash distillation
The outflow of device 22 evaporates the gaseous refrigeration for becoming low-temp low-pressure after capillary 26 further decompression throttling in condenser 28
Agent, then enter compressor 21 through four-way valve 30；The low temperature that compressor 21 will enter from four-way valve 30 and the first electric expansion valve 23
The gaseous refrigerant of low pressure generates the gaseous refrigerant of high temperature and pressure, is recycled with this.
Based on the above-mentioned technical proposal, it is replaced using the first electric expansion valve in the tonifying Qi circuit of air-conditioning system with enthalpy increased through vapor injection existing
There is the solenoid valve in technology, since the spool of the first electric expansion valve is helical structure, there is reverse locking power, therefore can keep away
It is open-top to exempt from the periodic pressure generated by the inner cavity of compressor pulsation, and then air-conditioning system with enthalpy increased through vapor injection can be avoided to generate the period
Sexual abnormality mechanical noise.Simultaneously as the aperture of the first expansion valve can be adjusted, therefore it can flexibly control Gas-supplying enthalpy-increasing air-conditioning
Air compensation in the tonifying Qi circuit of system.
The control method based on above-mentioned air-conditioning system with enthalpy increased through vapor injection is illustrated below by specific embodiment.
As shown in fig. 6, being a kind of control method of air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention, it is applied to system
In the scene of SAPMAC method.This method includes：
601, controller obtains the T that outdoor environment sensor detects within the i-th time cycleOuter shroud。
Illustratively, the specific value of a time cycle can be determined based on experience value.I is integer, and i is more than 0.
602, controller obtains the T that condensation sensor detects within the i-th time cycleCondensation。
Wherein, step 601 can in no particular order sequentially with 602 execution, and it is not limited in the embodiment of the present invention.
603, controller judges TOuter shroudAnd/or TCondensationWhether preset condition is met.
If it is not, Gas-supplying enthalpy-increasing process need not be carried out in the i-th time cycle of explanation, 604 are thened follow the steps.If so, explanation
Gas-supplying enthalpy-increasing process can be carried out by adjusting the aperture of the first electric expansion valve, then follow the steps 605.
Illustratively, " preset condition " in step 603 is：TOuter shroudMore than or equal to first threshold and/or TCondensationBe more than or
Equal to second threshold.
604, controller determines that the target aperture of the first electric expansion valve is 0.
After executing step 604,606 are thened follow the steps.
605, controller obtains the running frequency of compressor, and according to formula 1：STEP=K1 × F+K2 × TOuter shroud+K3×
TCondensation+ K4 determines the target aperture STEP of the first electric expansion valve；Wherein, 0 < K1≤30,0 < K2≤20,0 K3≤30 < ,-
100≤K4≤200。
Specifically, controller can be determined according to the actual temperature of indoor environment and the difference of target temperature set by user
The running frequency of compressor.
It should be noted that when the STEP calculated according to above-mentioned formula 1 is equal to or more than the maximum opening of the first expansion valve
When, then the target aperture for the first electric expansion valve that controller determines is the maximum opening of the first electric expansion valve.
606, transmitter sends the control instruction for including the target aperture to the first electric expansion valve.
607, the first electric expansion valve receives control instruction.
608：Current aperture regulation is target aperture according to the control command by the first electric expansion valve.
After executing step 608, the control method in the i-th time cycle terminates.
It should be noted that TOuter shroudAnd TCondensationValue can with the aperture of the first electric expansion valve change and change；Therefore, exist
When adjusting the aperture of the first electric expansion valve in continuous multiple time cycles, the T of acquisition in each periodOuter shroudAnd TCondensationValue not
Together.
As shown in fig. 7, being a kind of control method of air-conditioning system with enthalpy increased through vapor injection provided in an embodiment of the present invention, it is applied to system
In the scene of thermal cycle.This method includes：
701, controller obtains the T that outdoor environment sensor detects within the i-th time cycleOuter shroud。
Illustratively, the specific value of a time cycle can be determined based on experience value.I is integer, and i is more than 0.
702, controller judges TOuter shroudWhether preset condition is met.
If it is not, Gas-supplying enthalpy-increasing process need not be carried out in the i-th time cycle of explanation, 703 are thened follow the steps.If so, explanation
Gas-supplying enthalpy-increasing process can be carried out by adjusting the aperture of the first electric expansion valve, then follow the steps 704.
Illustratively, " preset condition " in step 702 is：TOuter shroudLess than or equal to third threshold value.
703, controller determines that the target aperture of the first electric expansion valve is 0.
After executing step 703,705 are thened follow the steps.
704, controller obtains the running frequency of compressor, and according to formula 2：STEP=K5 × F+K6 × TOuter shroud+ K7 is determined
The target aperture STEP of first electric expansion valve；Wherein, 0 < K5≤30,0 K6≤20 <, -100≤K7≤200.
Specifically, controller can be determined according to the actual temperature of indoor environment and the difference of target temperature set by user
The running frequency of compressor.
It should be noted that when the STEP calculated according to above-mentioned formula 2 is equal to or more than the maximum opening of the first expansion valve
When, then the target aperture for the first electric expansion valve that controller determines is the maximum opening of the first electric expansion valve.
705, transmitter sends the control instruction for including the target aperture to the first electric expansion valve.
706, the first electric expansion valve receives control instruction.
707：Current aperture regulation is target aperture according to the control command by the first electric expansion valve.
After executing step 707, the control method in the i-th time cycle terminates.
It should be noted that TOuter shroudValue can with the aperture of the first electric expansion valve change and change；Therefore, continuous
When adjusting the aperture of the first electric expansion valve in multiple time cycles, the T of acquisition in each periodOuter shroudValue it is different.
It is further to note that " aperture of the first electric expansion valve is 0 " is equivalent to " closing the first electric expansion valve ",
" aperture of the first electric expansion valve is not 0 " is equivalent to " opening the first electric expansion valve ".In order to avoid frequently opening and closing
First electric expansion valve when specific implementation, can open the first electricity so as to cause the problem that the first electric expansion valve service life is low
Certain control return difference is set between the condition of sub- expansion valve and the condition for closing the first electric expansion valve.For example, in refrigeration cycle
When：Work as TOuter shroudWhen more than or equal to first threshold, the first electric expansion valve is opened (i.e. by adjusting opening for the first electric expansion valve
Degree carries out Gas-supplying enthalpy-increasing process)；Work as TOuter shroudWhen less than another threshold value, the first electric expansion valve is closed (i.e. without Gas-supplying enthalpy-increasing mistake
Journey), wherein the threshold value is less than first threshold.When heating cycle：Work as TOuter shroudWhen less than or equal to third threshold value, the first electricity is opened
Sub- expansion valve (carrying out Gas-supplying enthalpy-increasing process by adjusting the aperture of the first electric expansion valve)；Work as TOuter shroudWhen more than another threshold value,
Close the first electric expansion valve (i.e. without Gas-supplying enthalpy-increasing process), wherein the threshold value is more than third threshold value.
Based on above-mentioned control method, since the aperture of the first expansion valve can be adjusted, tonifying Qi increasing can be flexibly controlled
Air compensation in the tonifying Qi circuit of enthalpy air-conditioning system.
Based on above-mentioned air-conditioning system with enthalpy increased through vapor injection, an embodiment of the present invention provides a kind of air conditioner, which includes upper
State any air-conditioning system with enthalpy increased through vapor injection described in Fig. 2, Fig. 5.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical by some interfaces, device or unit
Letter connection, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that the independent physics of each unit includes, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of hardware adds SFU software functional unit.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of air-conditioning system with enthalpy increased through vapor injection, which is characterized in that including：Compressor, tonifying Qi circuit and control system, the control
System includes controller and transmitter；The tonifying Qi circuit includes：Flash vessel and the first electric expansion valve；First electronics is swollen
One end of swollen valve is connect with the gas supplementing opening of the compressor, the benefit of the other end and the flash vessel of first electric expansion valve
Gas port connects；The flash vessel, isolates the gaseous refrigerant system of low-temp low-pressure, enters the pressure through first electric expansion valve
Contracting machine；
The controller determines the target aperture of first electric expansion valve on a preset condition based, specifically includes：
When refrigeration cycle, according to the running frequency F of the compressor, the temperature T of outdoor environmentOuter shroudWith the condensation temperature of condenser pipe
TCondensationDetermine the target aperture of first electric expansion valve；Or,
When heating cycle, according to the condensation temperature T of the running frequency F of the compressor and condenser pipeCondensationDetermine first electronics
The target aperture of expansion valve；
The transmitter sends the control instruction for including the target aperture to first electric expansion valve；
First electric expansion valve receives the control instruction that the control system is sent；
Current aperture regulation is the target aperture according to the control instruction by first electric expansion valve.
2. air-conditioning system with enthalpy increased through vapor injection according to claim 1, which is characterized in that
When refrigeration cycle, the preset condition is：The temperature of outdoor environment is greater than or equal to first threshold and/or condenser
Condensation temperature is greater than or equal to second threshold；Or,
When heating cycle, the preset condition is：The temperature of outdoor environment is less than or equal to third threshold value.
3. air-conditioning system with enthalpy increased through vapor injection according to claim 1, which is characterized in that when the refrigeration cycle, according to described
The running frequency F of compressor, the temperature T of outdoor environmentOuter shroudWith the condensation temperature T of condenser pipeCondensationDetermine first electronic expansion
The target aperture of valve, specifically includes：
When refrigeration cycle, according to formula S TEP=K1 × F+K2 × TOuter shroud+K3×TCondensation+ K4 determines first electric expansion valve
Target aperture STEP；Or,
When the heating cycle, according to the condensation temperature T of the running frequency F of the compressor and condenser pipeCondensationDetermine described first
The target aperture of electric expansion valve, specifically includes：
When heating cycle, according to formula S TEP=K5 × F+K6 × TCondensation+ K7 determines the target aperture of first electric expansion valve
STEP；
Wherein, described K1, K2, K3, K4, K5, K6, K7 are constant.
4. air-conditioning system with enthalpy increased through vapor injection according to claim 3, which is characterized in that
0 < K1≤30,0 < K2≤20,0 K3≤30 <, -100≤K4≤200；Or,
0 < K5≤30,0 K6≤20 <, -100≤K7≤200.
5. according to claim 1-4 any one of them air-conditioning system with enthalpy increased through vapor injection, which is characterized in that
The value range of the K is [0.85,1.15]；
Wherein, the PIt mendsFor the pressure of the gas supplementing opening of the flash vessel, the PIt inhalesFor the pressure of the air entry of the compressor, institute
State PRowFor the pressure of the exhaust outlet of the compressor.
6. according to claim 1-4 any one of them air-conditioning system with enthalpy increased through vapor injection, which is characterized in that the air-conditioning system is also wrapped
It includes：Capillary, the second electric expansion valve, condenser and evaporator；
The capillary is arranged between the flash vessel and the condenser；
Second electric expansion valve is arranged between the flash vessel and the evaporator.
7. a kind of air conditioner, which is characterized in that including the claims 1-6 any one of them air-conditioning system with enthalpy increased through vapor injection.
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| CN107044750B (en) * | 2017-03-17 | 2019-06-07 | 广东芬尼克兹节能设备有限公司 | Drive control method, system and the equipment of electric expansion valve |
| CN107166664A (en) * | 2017-06-09 | 2017-09-15 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107192158B (en) * | 2017-06-12 | 2023-07-14 | 珠海格力电器股份有限公司 | Enthalpy increasing system of air conditioner and fixed-frequency air conditioner with enthalpy increasing system |
| CN108087238B (en) * | 2017-11-03 | 2024-04-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioning system with same |
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| CN110397758B (en) * | 2018-04-24 | 2022-03-08 | 盾安汽车热管理科技有限公司 | Expansion valve and air-supplying enthalpy-increasing system |
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| CN109341123B (en) * | 2018-12-07 | 2023-07-14 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
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| CN110686432B (en) * | 2019-10-18 | 2021-06-18 | 广东美的制冷设备有限公司 | Operation control method and device, air conditioner and storage medium |
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| CN113091205B (en) * | 2020-08-19 | 2022-03-08 | 广州松下空调器有限公司 | Air conditioner abnormity detection method and device |
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