CN110145889A - The method of air-conditioner system, air conditioner and air-conditioner system control - Google Patents
The method of air-conditioner system, air conditioner and air-conditioner system control Download PDFInfo
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- CN110145889A CN110145889A CN201910508010.9A CN201910508010A CN110145889A CN 110145889 A CN110145889 A CN 110145889A CN 201910508010 A CN201910508010 A CN 201910508010A CN 110145889 A CN110145889 A CN 110145889A
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- conditioner system
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Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B41/00—Fluid-circulation arrangements
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of methods of air-conditioner system, air conditioner and air-conditioner system control.A kind of air-conditioner system includes compressor；The first end of condenser is connected with the exhaust outlet of compressor；The first end of evaporator is connected with the second end of condenser, and the second end of evaporator is connected with the air entry of compressor；The first end of storage liquid access is selectively connected with the first end of the second end of condenser or evaporator, the second end of storage liquid access is connected with the air entry of compressor, liquid storage device is provided on storage liquid access, liquid storage device is for storing or discharging the refrigerant in air-conditioner system pipeline, to increase or decrease the total amount of the refrigerant flowed in air-conditioner system pipeline.It is used to store the refrigerant in air-conditioner system by liquid storage device, change the heat that can be exchanged heat according to actual needs under different operating conditions to control the total amount that refrigerant flows in air-conditioner system, to effectively improve the energy valid value of air-conditioner system to reach.
Description
Technical field
The present invention relates to air-conditioner device technical fields, in particular to a kind of air-conditioner system, air conditioner and air-conditioning
The method of device system control.
Background technique
In air conditioning performance matching, when one timing of air-conditioning configuration, operating condition and frequency, make exhaust and suction temperature and refrigeration
Agent internal circulating load is in a reasonable value, and the requirement for meeting refrigerating capacity may be implemented, and improves COP, the energy with the increase of refrigerant
The value of valid value COP is increasing, when the amount of refrigerant reaches a certain amount of, and as the increase COP of refrigerant is declined, so
In the entire system, reasonable circulating mass of refrigerant has vital effect to COP.
Under one timing of air-conditioning configuration and frequency, different operating conditions, the internal circulating load for being optimal COP is different.Previous people are solid
Determine thinking, is all by advanced electric expansion valve adjustable aperture technical controlling throttling intensity, not compared to one layer of capillary
The throttle style of intensity adjustable has bigger cost performance, and comfortable sexual experience is higher.
Summary of the invention
The main purpose of the present invention is to provide a kind of air-conditioner system, air conditioner and air-conditioner system control method,
To solve the problems, such as that air-conditioner system COP value is low in the prior art.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of air-conditioner system, comprising: compression
Machine；Condenser, the first end of condenser are connected with the exhaust outlet of compressor；Evaporator, the first end and condenser of evaporator
Second end be connected, the second end of evaporator is connected with the air entry of compressor；Store liquid access, the of storage liquid access
One end is selectively connected with the first end of the second end of condenser or evaporator, stores the second end and compressor of liquid access
Air entry be connected, store and be provided with liquid storage device on liquid access, liquid storage device is for storing or discharging in air-conditioner system pipeline
Refrigerant, to increase or decrease the total amount of the refrigerant flowed in air-conditioner system pipeline.
Further, air-conditioner system includes: pressure triple valve, and pressure triple valve is set on storage liquid access, tapping
The first end of access is selectively connected with the first end of the second end of condenser or evaporator by pressure triple valve.
Further, air-conditioner system further include: level-one bypasses electronic valve, and level-one bypass electronic valve is set to pressure threeway
On pipeline between valve and liquid storage device.
Further, air-conditioner system further include: second level bypass two-port valve, second level bypass two-port valve be set to liquid storage device with
On pipeline between the air entry of compressor.
Further, air-conditioner system further include: check valve, check valve are set to second level bypass two-port valve and compressor
On pipeline between air entry.
Further, throttle valve, pressure are provided on the pipeline between the second end of condenser and the first end of evaporator
One import branch of triple valve is set on the pipeline between the second end of condenser and throttle valve, pressure triple valve it is another
A import branch is set on the pipeline between throttle valve and the first end of evaporator.
Further, air-conditioner system further include: four-way valve, the exhaust outlet of compressor by four-way valve selectively with it is cold
The first end of condenser or the second end of evaporator are connected.
According to another aspect of the present invention, a kind of air conditioner, including air-conditioner system are provided, air-conditioner system is above-mentioned
Air-conditioner system.
According to another aspect of the present invention, a kind of method of air-conditioner system control is provided, method is above-mentioned for controlling
Air-conditioner system, within a preset range whether method the following steps are included: according to the environment temperature detected, to choose whether
By store liquid access allow part refrigerant enter in liquid storage device with reduce refrigerant in air-conditioner system pipeline flow it is total
Amount.
Further, method is further comprising the steps of: environment temperature includes room temperature and outdoor temperature, when temperature sensing package is examined
When measuring the absolute value of the difference of outdoor temperature and setting value less than or equal to T1, then judgement is suitble to small flow circulation pattern, if room
When the absolute value of the difference of outer temperature and setting value is greater than T1, then it is determined as normal discharge circulation pattern.
Further, in normal discharge circulation pattern, air-conditioner system level-one bypass electronic valve is in close state, and two
Grade bypass two-port valve is in the open state.
Further, in small flow circulation pattern, refrigerant is needed according to the difference determination of outdoor temperature and setting value
Internal circulating load number, if the difference of outdoor temperature and setting value is smaller, at this time compressor carry out high frequency run operation, with increase storage
Refrigeration dose in liquid device, if the difference of outdoor temperature and setting value is larger, compressor is in the running frequency under current working
It rises to intermediate frequency and carries out booste operation operation, control level-one bypass electronic valve is in the open state at this time, and second level bypasses two-way
Valve is in close state.
Further, in small flow circulation pattern, the system flowed into liquid storage device is determined by the delivery temperature of compressor
The amount of cryogen.
Further, it in small flow circulation pattern, after the delivery temperature of compressor reaches preset value, closes by level-one
Logical electronic valve and second level bypass two-port valve, and the refrigerant of part is deposited in liquid storage device.
Further, during compressor continues to run, temperature sensing package periodically carries out room temperature and outdoor temperature
Detection, and compared by the difference of room temperature and outdoor temperature and setting value, and determined according to fiducial value and select small flow
Circulation pattern or normal discharge circulation pattern.
Further, after each compressor shutdown, level-one bypasses electronic valve and second level bypass two-port valve default is restored to open
State.
Further, when temperature sensing package detects that the absolute value of the difference of room temperature and setting value is less than or equal to T2, this
When compressor carry out high frequency run operation, when the absolute value of the difference of room temperature and setting value be greater than T2 when, compressor is current
Running frequency under operating condition rises to intermediate frequency and carries out booste operation operation.
Further, compressor is frequency-changeable compressor.
Further, compressor is invariable frequency compressor.
It applies the technical scheme of the present invention, by the way that storage liquid access is arranged in air-conditioner system, and in storage liquid access
Upper setting liquid storage device, and be used to store the refrigerant in air-conditioner system by liquid storage device, changed with reaching in different operation works
The heat that can be exchanged heat according to actual needs under condition is to control the total amount that refrigerant flows in air-conditioner system, to effectively mention
The high energy valid value of air-conditioner system.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 show air-conditioner system according to the present invention in cooling mode refrigerant in system circulation flow direction
The structural schematic diagram of embodiment；
Fig. 2 shows the structural schematic diagrams for the embodiment that liquid access is stored in air-conditioner system according to the present invention；
Fig. 3 show air-conditioner system according to the present invention in a heating mode refrigerant in system circulation flow direction
The structural schematic diagram of embodiment；
Fig. 4 shows the flowage structure signal of the embodiment of the control method of transducer air conditioning system according to the present invention
Figure；
Fig. 5 shows the flowage structure signal of the embodiment of the control method of air-conditioner with fixed frequency system according to the present invention
Figure.
Wherein, the above drawings include the following reference numerals:
1, pressure triple valve；2, level-one bypasses electronic valve；3, liquid storage device；4, second level bypasses two-port valve；5, check valve；6, it presses
Contracting machine；7, four-way valve；8, condenser；9, throttle valve；10, evaporator.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way
Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them
It states.
In conjunction with shown in Fig. 1 to Fig. 5, according to an embodiment of the invention, providing a kind of air-conditioner system.
As depicted in figs. 1 and 2, the air-conditioner system include compressor 6, condenser 8, evaporator 10, storage liquid access and
Liquid storage device 3.The first end of condenser 8 is connected with the exhaust outlet of compressor 6.The of the first end of evaporator 10 and condenser 8
Two ends are connected.The second end of evaporator 10 is connected with the air entry of compressor 6.Store the first end of liquid access selectively
It is connected with the first end of the second end of condenser 8 or evaporator 10, stores the second end of liquid access and the air entry of compressor 6
It is connected.Liquid storage device 3 is provided on storage liquid access, liquid storage device 3 is for storing or discharging the refrigeration in air-conditioner system pipeline
Agent, to increase or decrease the total amount of the refrigerant flowed in air-conditioner system pipeline.
In the present embodiment, by the way that storage liquid access is arranged in air-conditioner system, and storage is set on storage liquid access
Liquid device, and be used to store refrigerant in air-conditioner system by liquid storage device, to reach, change under different operating conditions can be with
The heat to exchange heat according to actual needs is to control the total amount that refrigerant flows in air-conditioner system, to effectively improve air-conditioning
The energy valid value of device system.
Specifically, as shown in Fig. 2, air-conditioner system includes pressure triple valve 1.It is logical that pressure triple valve 1 is set to storage liquid
On the road, the first end of tapping access by pressure triple valve 1 selectively with the second end of condenser 8 or evaporator 10 first
End is connected.The refrigerant being located in pipe-line system can be drained in liquid storage device 3 by setting in this way.
Air-conditioner system further includes level-one bypass electronic valve 2 and second level bypass two-port valve 4.Level-one bypasses electronic valve 2 and is arranged
On pipeline between pressure triple valve 1 and liquid storage device 3.Second level bypass two-port valve 4 is set to the suction of liquid storage device 3 Yu compressor 6
On pipeline between port.Setting can efficiently control the amount into refrigerant in liquid storage device 3 in this way, and can will be located at storage
Refrigerant in liquid device 3 is smoothly discharged into air-conditioner system.
There is a situation where refrigerants to flow back during discharging refrigerant in order to prevent, and air-conditioner system is also provided with list
To valve 5.Check valve 5 is set on the pipeline between second level bypass two-port valve 4 and the air entry of compressor 6.
Wherein, throttle valve 9, pressure are provided on the pipeline between the second end of condenser 8 and the first end of evaporator 10
One import branch of triple valve 1 is set on the pipeline between the second end of condenser 8 and throttle valve 9, pressure triple valve 1
Another import branch is set on the pipeline between throttle valve 9 and the first end of evaporator 10.Air-conditioner system is also provided with
Four-way valve 7.The exhaust outlet of compressor 6 passes through the selectively second end with the first end of condenser 8 or evaporator 10 of four-way valve 7
It is connected.Setting enables to the air-conditioner system to be able to carry out refrigeration or heating mode switching in this way.
Air-conditioner system in above-described embodiment can be also used for air conditioner technical field, i.e., another party according to the present invention
Face, provides a kind of air conditioner, including air-conditioner system, and air-conditioner system is the air-conditioner system in above-described embodiment.
According to another aspect of the present invention, as shown in figure 4, providing a kind of method of air-conditioner system control, method is used
Air-conditioner system in control above-described embodiment, whether method is the following steps are included: according to the environment temperature detected pre-
If in range, to choose whether to allow the refrigerant of part to enter in liquid storage device 3 to reduce air-conditioner system by storing liquid access
The total amount that refrigerant flows in pipeline.
In the present embodiment, environment temperature includes room temperature and outdoor temperature, when temperature sensing package detect outdoor temperature with
When the absolute value of the difference of setting value is less than or equal to T1, then judgement is suitble to small flow circulation pattern, if outdoor temperature and setting value
Absolute value of the difference be greater than T1 when, then be determined as normal discharge circulation pattern.Wherein, room temperature abbreviation inner ring, outdoor temperature
Abbreviation outer ring.In normal discharge circulation pattern, air-conditioner system level-one bypass electronic valve 2 is in close state, second level bypass
Two-port valve 4 is in the open state.
Wherein, compressor in the present embodiment is frequency-changeable compressor, i.e., the air-conditioner system is transducer air conditioning system,
In small flow circulation pattern, determined according to the difference of outdoor temperature and setting value the internal circulating load for needing refrigerant number, if room
The difference of outer temperature and setting value is smaller, and compressor 6 carries out high frequency and runs operation at this time, to increase the refrigerant in liquid storage device 3
Amount, if the difference of outdoor temperature and setting value is larger, running frequency of the compressor 6 under current working rise to intermediate frequency into
Row booste operation operation, control level-one bypass electronic valve 2 is in the open state at this time, and second level bypasses two-port valve 4 and is in closing shape
State.The amount of the refrigerant flowed into liquid storage device 3 is determined by the delivery temperature of compressor 6.When the delivery temperature of compressor 6 reaches
After preset value, closes level-one bypass electronic valve 2 and second level bypasses two-port valve 4, the refrigerant of part is deposited in liquid storage device 3
It is interior.During compressor 6 continues to run, temperature sensing package periodically detects room temperature and outdoor temperature, and passes through room
The difference of interior temperature and outdoor temperature and setting value compares, and is determined according to fiducial value and select small flow circulation pattern or normal
Flow circulation pattern.After each compressor 6 is shut down, level-one bypasses electronic valve 2 and the second level bypass default of two-port valve 4 restores open shape
State.
Further, when temperature sensing package detects that the absolute value of the difference of room temperature and setting value is less than or equal to T2, this
When compressor 6 carry out high frequency run operation, when the absolute value of the difference of room temperature and setting value be greater than T2 when, compressor 6 is being worked as
Running frequency under preceding operating condition rises to intermediate frequency and carries out booste operation operation.
Certainly, in the present embodiment, compressor is also possible to invariable frequency compressor, as shown in figure 5, the air-conditioner system is fixed
Frequency air-conditioner system.Whether within a preset range according to the environment temperature detected, to choose whether to allow by storing liquid access
Partial refrigerant enters in liquid storage device 3 to reduce the total amount that refrigerant flows in air-conditioner system pipeline.Environment temperature includes
Room temperature and outdoor temperature, when temperature sensing package detects that the absolute value of the difference of outdoor temperature and setting value is less than or equal to T1,
Then judgement is suitble to small flow circulation pattern, if the absolute value of the difference of outdoor temperature and setting value is greater than T1, is determined as normal
Flow circulation pattern.Wherein, room temperature abbreviation inner ring, outdoor temperature abbreviation outer ring.In normal discharge circulation pattern, air-conditioning
Device system level bypass electronic valve 2 is in close state, and it is in the open state that second level bypasses two-port valve 4.In small flow cyclic module
In formula, the amount of the refrigerant flowed into liquid storage device 3 is determined by the delivery temperature of compressor 6.When the delivery temperature of compressor 6 reaches
To after preset value, closes level-one bypass electronic valve 2 and second level bypasses two-port valve 4, the refrigerant of part is deposited in liquid storage device 3
It is interior.During compressor 6 continues to run, temperature sensing package periodically detects room temperature and outdoor temperature, and passes through room
The difference of interior temperature and outdoor temperature and setting value compares, and is determined according to fiducial value and select small flow circulation pattern or normal
Flow circulation pattern.After each compressor 6 is shut down, level-one bypasses electronic valve 2 and the second level bypass default of two-port valve 4 restores open shape
State.Wherein, it is notable that compressor shutdown includes that protection shuts down, makes to compress into defrost shutdown and remote manual control shutdown
Machine is shut down, and " each compressor 6 is shut down " of the application refers to: being shut down by remote manual control makes compressor shutdown, by level-one
Logical electronic valve 2 and the second level bypass default of two-port valve 4 restore opening state.
Specifically, using the air-conditioner system, the system inner refrigerant circulation nonadjustable system problem of total amount is solved.Solution
System of having determined inner refrigerant recycles the nonadjustable logic control problem of total amount.Solves the non-adjustable components of system as directed operating condition of refrigerant
Under, the relatively low problem of the compressor oil temperature degree of superheat improves product reliability.
Using the air-conditioner system of the application, has to product efficiency benefit and its reliability and further significantly mention
It is high.The refrigerating plant of level-one electronic valve, second level two-port valve, liquid storage device capacity and check valve composition is reasonably selected, and sets conjunction
The electronic valve and two-port valve logic of reason, may be implemented the internal circulating load of change system totality, meet Capability Requirement, reduce compressor and do
Work, COP when improving heating refrigeration can valid value.
Using the air-conditioner system of the application, realizes that adjusting refrigerant circulation total amount is adjustable, compare unadjustable refrigerant
Total amount system is recycled, the product reliability such as oil overheating degree can also be improved by changing refrigerant circulation total amount.Pass through liquid storage device
Storage or release cooling system agent flux, achieve the effect that change refrigerant circulation total amount.
In traditional industries, the refrigerant circulation total amount in air-conditioning system is consistently equal to groundwater increment, and system under different operating conditions
Optimal circulation total amount is not identical, when operating condition variation when, therefore the circulation total amount that original perfusion cannot be effectively ensured always be in or
Approximation is in the optimal circulation total amount section of different operating conditions.
The application, can be adjustable according to different operating conditions system circulation total amounts by setting liquid storage device, keeps circulation total amount small
It in or equal to original groundwater increment, realizes and meets Capability Requirement, reduce compressor workmanship, improving the COP heated when freezing can valid value
Purpose.
By liquid storage device, the refrigerant in system can be divided into two parts by the device, and a part is participation system circulation
Refrigerant, another part are the refrigerant for being not involved in system circulation and being stored, wherein the refrigerant stored can be with
The refrigerant in stocking system is discharged into system or continued by refrigerating plant, and adjusting is realized by rigorous control mode
Refrigeration cycle total amount, so that adjusting internal circulating load under the premise of system refrigerant total amount is constant with electric expansion valve realizes energy saving phase
Than, when this device realizes the requirement for meeting refrigerating capacity again, make exhaust and suction temperature pressure and circulating mass of refrigerant into
One step is in a reasonable value, is further reduced compressor workmanship energy consumption, meets power consumption when guaranteeing performance under different operating conditions
Continue to decline, the effect that COP can be enhanced once again, improves economy.
On original system, guarantee performance reliability under the premise of, compared to original system under different temperatures guarantee performance when consume
Electricity decline, COP increase, and can take into account system oil temperature degree of superheat reliability under low temperature.As shown in Figure 1, opening system in air-conditioning
When cold, pressure triple valve 1 automatically selects 8 high pressure side outlet of condenser and liquid storage device 3 with the rising of refrigerant pressure system
Communicate, level-one bypass electronic valve 2 by delivery temperature control liquid storage amount number.Liquid storage device 3 is used to store under certain operating conditions
The refrigerant of circulation is not involved in system, second level bypasses the effect that two-port valve 4 cooperates level-one bypass electronic valve 2 to constitute closing liquid storage,
Liquid of the 5 guarantee system of check valve when not needing liquid storage in liquid storage device 3 can approximate whole inflow systems and there is no
Flowing backwards can liquid storage device 3.
As shown in figure 3, pressure triple valve 1 selects automatically with the rising of heating pressure system when air-conditioning opens heating
It selects 10 high pressure side outlet of evaporator and liquid storage device 3 communicates, level-one bypasses electronic valve 2 and controls the more of liquid storage amount by delivery temperature
It is few.Liquid storage device 3 is used to store the refrigerant for being not involved in circulation under certain operating conditions in system, and second level bypasses two-port valve 4 and cooperates level-one
Bypass the effect that electronic valve 2 constitutes closing liquid storage, liquid energy of the 5 guarantee system of check valve when not needing liquid storage in liquid storage device 3
Enough approximations all flow into systems and can liquid storage devices 3 there is no flowing backwards.
By the logic control method, the size for changing refrigeration cycle total amount is accurately controlled, different operating conditions systems are made
System circulation total amount is in or is approximately at the optimal value of refrigerant circulation under operating condition, and realization meets Capability Requirement, reduces pressure
Contracting machine workmanship improves the purpose of COP energy valid value when heating is freezed.
Refrigerant is stored up in liquid storage device 3 in operating condition appropriate.When cooling system amount and big heating capacity, need big
Circulating mass of refrigerant, refrigerant is at this time not present in this device, can be when system heating capacity and refrigerating capacity are few
Some refrigerant is stored in liquid storage device 3, and at this time system refrigerant internal circulating load is small, and corresponding pressure at expulsion is reduced, and compressor is same to be turned
The lower workmanship of speed is small, and refrigerating capacity on the contrary can be higher, needs optimal circulating mass of refrigerant under each operating condition to ensure that and subtracts
Few power consumption.And determining that the size of refrigerating capacity and heating capacity is determined by set temperature and the outer ring temperature difference, the two is bigger, generally comes
It says, the air conditioning capacity needed is bigger, therefore circulating mass of refrigerant is big, on the contrary then small.
As shown in figure 4, for frequency changer, when being run under being suitble to small flow, if room temperature and setting temperature difference
Smaller, (wherein, as shown in figure 4, the difference is larger or smaller can be compared with T2 value obtains) then ability needs are smaller,
Refrigerant circulation is adjustable to smaller, increases the liquid storage amount in fluid reservoir in such a way that high frequency boosts at this time, passes through exhaust
The accuracy of liquid is received in temperature control.The delivery temperature T that general control liquid storage device receives liquid accuracy is set by frequency, △ t=| setting-
Inner ring | it is determined in logic in advance.
The control method of whole system are as follows: flow internal circulating load is determined according to set temperature, outer ring jointly.In temperature sensing package detection
Ring and outer ring, when set temperature and outer ring temperature are lesser, such as: | setting-outer ring |≤T1 then determines to be suitble to small flow
Circulation, executes subsequent liquid storage logic, is otherwise determined as that normal discharge recycles, and closes level-one bypass electronic valve 2 and opens by second level
Lead to two-port valve 4, refrigerant is not present in approximation in liquid storage device 3.By outer ring and set temperature as basic Rule of judgment.
Execute liquid storage control, first according to set temperature and inner ring temperature difference, determine refrigeration cycle amount number, the temperature difference compared with
It is small, illustrate circulating mass of refrigerant Ying Geng little, answer high frequency to run at this time, increase high side pressure, increases liquid storage amount, conversely, then pressing
The intermediate frequency of this operating condition lower frequency traffic coverage is boosted, and guarantees that liquid storage amount is moderate.It is further by inner ring and set temperature
As adjusting optimal flux size Rule of judgment.
Refrigerating capacity is stored secondly by adjustment process: being opened level-one bypass electronic valve 2, is closed second level bypass two-port valve 4,
And precisely determined according to delivery temperature and receive liquid measure, the delivery temperature T that general control receives liquid accuracy is set by frequency, △ t=| it sets
Fixed-inner ring | it is determined in logic in advance.By first electronic expansion valve controls delivery temperature, different type of machines is needed according to type
Configuration feature sets specific control parameter.
After meeting delivery temperature, level-one bypass electronic valve 2, second level bypass two-port valve 4 are closed, then the refrigerant in liquid storage device 3
It is no longer participate in system circulation, preliminary completion changes the work of system circulation refrigerating capacity, then system freedom of entry operational mode.Extremely
This, starts to realize and improves air conditioner refrigerating, heating performance, reduce the beneficial effect of compressor workmanship.
After running a period of time, if runing time be greater than or equal to t min, then system detect again inner ring, outer ring with
Set temperature determines the system optimum cycle coolant quantity for causing to need selection because of fluctuation of operating conditions again, is flexibly completed with becoming to make to become
The adjusting of coolant quantity.After user's shutdown, level-one bypass electronic valve 2 and second level bypass two-port valve 4 all default recovery opening state.
By controlling above, when meeting refrigerating capacity requirement, achieve the effect that refrigerating capacity is adjusted in change system, it is real
The COP of optimum cycle amount is showed.
Because oil overheating degree directly affects the effect of lubricating oil, when oil overheating degree is lower, in lubricating oil refrigerant compared with
It is more, dilute lubricating oil effect, and compressor liquid hammer is easy to cause in greasing.It is few for some performance requirements and heating and
Cooling condition oil overheating degree is inadequate, leads to that compressor lubrication oil viscosity is inadequate or film strength is insufficient and causes the compressor service life
Integrity problem again may be by the total internal circulating load of change system refrigerant to improve exhaust, meet the requirement of the degree of superheat, this
Problem can be taken into account.
As shown in figure 5, for determining frequency machine, the control method of whole system are as follows: determined and flowed jointly according to set temperature, outer ring
Measure internal circulating load.Temperature sensing package detects inner ring and outer rings, when set temperature and outer ring temperature are lesser, such as: | setting-outer ring |
≤ T1 then determines that small flow is suitble to recycle, executes subsequent liquid storage logic, is otherwise determined as that normal discharge recycles, closes by level-one
Logical electronic valve 2 and opening second level bypass two-port valve 4, and refrigerant is not present in liquid storage device.Based on outer ring and set temperature
Rule of judgment.
Refrigerating capacity is stored secondly by adjustment process: being opened level-one bypass electronic valve, is closed second level bypass two-port valve, and
It is precisely determined according to delivery temperature and receives liquid measure, the delivery temperature T that general control receives liquid accuracy is set to be determined in logic in advance.By
First electronic expansion valve controls delivery temperature, different type of machines, which needs to configure feature according to type, sets specific logic parameter.
After meeting delivery temperature, close level-one bypass electronic valve 2, second level bypasses two-port valve 4, then the refrigerant in liquid storage device is not
System circulation is participated in again, and preliminary completion changes the work of system circulation refrigerating capacity, then system freedom of entry operational mode.Extremely
This, starts to realize and improves air conditioner refrigerating, heating performance, reduce the beneficial effect of compressor workmanship.
After running a period of time, if runing time be greater than or equal to t min, then system detect again inner ring, outer ring with
Set temperature determines the system optimum cycle coolant quantity for causing to need selection because of fluctuation of operating conditions again, is flexibly completed with becoming to make to become
The adjusting of coolant quantity.After user's shutdown, level-one bypass electronic valve 2 and second level bypass two-port valve 4 all default recovery opening state.
Because oil overheating degree directly affects the effect of lubricating oil, when oil overheating degree is lower, in lubricating oil refrigerant compared with
It is more, dilute lubricating oil effect, and compressor liquid hammer is easy to cause in greasing.It is few for some performance requirements and heating and
Cooling condition oil overheating degree is inadequate, leads to that compressor lubrication oil viscosity is inadequate or film strength is insufficient and causes the compressor service life
Integrity problem again may be by the total internal circulating load of change system refrigerant to improve exhaust, meet the requirement of the degree of superheat, this
Problem can be taken into account.
Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation
Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary
Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description
Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment
Other embodiments are closed to realize that this feature, structure or feature are also fallen within the scope of the present invention.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (19)
1. a kind of air-conditioner system characterized by comprising
Compressor (6)；
The first end of condenser (8), the condenser (8) is connected with the exhaust outlet of the compressor (6)；
The first end of evaporator (10), the evaporator (10) is connected with the second end of the condenser (8), the evaporator
(10) second end is connected with the air entry of the compressor (6)；
Store liquid access, it is described storage liquid access first end selectively with the second end or the steaming of the condenser (8)
The first end of hair device (10) is connected, and the second end of the storage liquid access is connected with the air entry of the compressor (6), institute
It states and is provided with liquid storage device (3) on storage liquid access, the liquid storage device (3) is for storing or discharging the system in air-conditioner system pipeline
Cryogen, to increase or decrease the total amount of the refrigerant flowed in air-conditioner system pipeline.
2. air-conditioner system according to claim 1, which is characterized in that the air-conditioner system includes:
Pressure triple valve (1), the pressure triple valve (1) are set on the storage liquid access, and the first of the tapping access
End by the pressure triple valve (1) selectively with the second end of the condenser (8) or the evaporator (10) first
End is connected.
3. air-conditioner system according to claim 2, which is characterized in that the air-conditioner system further include:
Level-one bypasses electronic valve (2), and level-one bypass electronic valve (2) is set to the pressure triple valve (1) and the liquid storage
On pipeline between device (3).
4. air-conditioner system according to claim 1, which is characterized in that the air-conditioner system further include:
Second level bypasses two-port valve (4), and second level bypass two-port valve (4) is set to the liquid storage device (3) and the compressor (6)
Air entry between pipeline on.
5. air-conditioner system according to claim 4, which is characterized in that the air-conditioner system further include:
Check valve (5), the check valve (5) are set to the air entry of second level bypass two-port valve (4) and the compressor (6)
Between pipeline on.
6. air-conditioner system according to claim 2, which is characterized in that the second end and the steaming of the condenser (8)
It sends out and is provided with throttle valve (9) on the pipeline between the first end of device (10), an import branch of the pressure triple valve (1) is set
Be placed on the pipeline between the second end of the condenser (8) and the throttle valve (9), the pressure triple valve (1) it is another
A import branch is set on the pipeline between the throttle valve (9) and the first end of the evaporator (10).
7. air-conditioner system according to claim 1, which is characterized in that the air-conditioner system further include:
Four-way valve (7), the exhaust outlet of the compressor (6) by the four-way valve (7) selectively with the condenser (8)
First end or the second end of the evaporator (10) are connected.
8. a kind of air conditioner, including air-conditioner system, which is characterized in that the air-conditioner system is any in claim 1 to 7
Air-conditioner system described in.
9. a kind of method of air-conditioner system control, the method is for controlling air-conditioning described in any one of any one of claims 1 to 77
Device system, which is characterized in that the described method comprises the following steps:
Whether within a preset range according to the environment temperature detected, to choose whether to allow part by the storage liquid access
Refrigerant enters in the liquid storage device (3) to reduce the total amount that refrigerant flows in air-conditioner system pipeline.
10. according to the method described in claim 9, it is characterized in that, the method also includes following steps:
The environment temperature includes room temperature and outdoor temperature, when temperature sensing package detects the difference of the outdoor temperature and setting value
Absolute value when being less than or equal to T1, then judgement is suitble to small flow circulation pattern, if the difference of the outdoor temperature and setting value
When absolute value is greater than T1, then it is determined as normal discharge circulation pattern.
11. according to the method described in claim 10, it is characterized in that, in the normal discharge circulation pattern, the air-conditioning
Device system level bypass electronic valve (2) is in close state, and it is in the open state that second level bypasses two-port valve (4).
12. according to the method described in claim 10, it is characterized in that, in the small flow circulation pattern, according to the room
The difference of outer temperature and setting value determine the internal circulating load for needing refrigerant number, if the difference of the outdoor temperature and setting value compared with
Small, the compressor (6) carries out high frequency and runs operation at this time, to increase the refrigeration dose in the liquid storage device (3), if the room
The difference of outer temperature and setting value is larger, running frequency of the compressor (6) under current working rise to intermediate frequency into
Row booste operation operation, control level-one bypass electronic valve (2) is in the open state at this time, and second level bypasses two-port valve (4) and is in pass
Closed state.
13. according to the method for claim 12, which is characterized in that in the small flow circulation pattern, pass through the pressure
The delivery temperature of contracting machine (6) determines the amount of the refrigerant flowed into the liquid storage device (3).
14. according to the method for claim 12, which is characterized in that in the small flow circulation pattern, when the compression
After the delivery temperature of machine (6) reaches preset value, level-one bypass electronic valve (2) and second level bypass two-port valve (4) are closed,
The refrigerant of part to be deposited in the liquid storage device (3).
15. according to the method for claim 14, which is characterized in that during the compressor (6) continues to run, temperature sensing package
Periodically room temperature and outdoor temperature are detected, and pass through the room temperature and the outdoor temperature and setting value
Difference compare, and determined according to fiducial value and select the small flow circulation pattern or the normal discharge circulation pattern.
16. according to the method for claim 11, which is characterized in that after the compressor (6) is shut down every time, by the level-one
Logical electronic valve (2) and second level bypass two-port valve (4) default restore opening state.
17. according to the method for claim 12, which is characterized in that when temperature sensing package detects the room temperature and setting value
Absolute value of the difference when being less than or equal to T2, the compressor (6) carries out high frequency and runs operation at this time, when the room temperature with
When the absolute value of the difference of setting value is greater than T2, running frequency of the compressor (6) under current working rises to intermediate frequency
Carry out booste operation operation.
18. the method according to any one of claim 9 to 17, which is characterized in that the compressor (6) is frequency conversion compression
Machine.
19. the method according to any one of claim 9 to 11,13 to 16, which is characterized in that the compressor (6) is
Invariable frequency compressor.
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| CN201910508010.9A CN110145889B (en) | 2019-06-12 | 2019-06-12 | Air conditioner system, air conditioner and air conditioner system control method |
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