CN109631421A - air conditioning unit and control method thereof - Google Patents
air conditioning unit and control method thereof Download PDFInfo
- Publication number
- CN109631421A CN109631421A CN201910032894.5A CN201910032894A CN109631421A CN 109631421 A CN109631421 A CN 109631421A CN 201910032894 A CN201910032894 A CN 201910032894A CN 109631421 A CN109631421 A CN 109631421A
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- cold medium
- medium flux
- heat transfer
- transfer zone
- demand
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004378 air conditioning Methods 0.000 title abstract description 5
- 239000011552 falling film Substances 0.000 claims abstract description 63
- 239000003507 refrigerant Substances 0.000 claims abstract description 30
- 230000004907 flux Effects 0.000 claims description 170
- 238000012546 transfer Methods 0.000 claims description 113
- 239000007788 liquid Substances 0.000 claims description 46
- 239000010408 film Substances 0.000 claims description 13
- 239000004744 fabric Substances 0.000 description 6
- 239000013589 supplement Substances 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Classifications
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- 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
- F25B41/31—Expansion valves
-
- 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
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an air conditioning unit and a control method thereof, wherein the air conditioning unit comprises: compressor, condenser, evaporimeter, the evaporimeter includes: a falling film heat exchange zone and a flooded heat exchange zone; one end of the first throttling passage is connected with the condenser, and the other end of the first throttling passage is connected with the falling film type heat exchange area; and one end of the second throttling passage is connected with the condenser, and the other end of the second throttling passage is connected with the flooded heat exchange area. The invention solves the problem that the hybrid evaporator in the prior art can not give consideration to the unit load requirement and the optimal heat exchange parameter, and meets the refrigerant flow and heat exchange requirements under different loads while obtaining the optimal heat exchange efficiency.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of air-conditioner set and its control method.
Background technique
Currently, the exploitation of screw rod water cooled chiller persistently proposes effect, downward film evaporator using more and more extensive, falling film type
Evaporator application can be improved evaporation problems and save refrigerant, but it has cloth film unevenness at part load, therefore develop
Hybrid evaporator, shell side top heat exchanger tube exchange heat for falling film type, and lower part exchanged heat using full-liquid type.But it is existing hybrid
Evaporator is usually still also, to meet workload demand and falling film type heat transfer zone is best by falling film type heat transfer zone coolant adding
Heat exchanger tube cloth film thickness and refrigerant, which are evenly distributed with degree, to be met simultaneously, when meeting workload demand, be often unable to reach optimal
Falling film type heat transfer zone heat exchanger tube cloth film thickness and refrigerant are evenly distributed with degree, when the optimal heat exchanger tube cloth film thickness of setting and refrigerant are uniformly distributed
When degree, and there may be not able to satisfy workload demand.
Aiming at the problem that hybrid evaporator in the related technology cannot be considered in terms of unit load demand and best heat exchange parameter, mesh
It is preceding not yet to propose to efficiently solve scheme.
Summary of the invention
The present invention provides a kind of air-conditioner set and its control methods, at least to solve hybrid evaporator in the prior art
The problem of cannot be considered in terms of unit load demand and best heat exchange parameter.
In order to solve the above technical problems, according to an aspect of an embodiment of the present invention, a kind of air-conditioner set is provided, including
Compressor, condenser, evaporator, comprising: evaporator includes: falling film type heat transfer zone and full-liquid type heat transfer zone；First throttle access,
One end is connect with condenser, and the other end is connect with falling film type heat transfer zone；Second throttle passage, one end are connect with condenser, another
End is connect with full-liquid type heat transfer zone.
Further, falling film type heat transfer zone is located at the top of full-liquid type heat transfer zone.
Further, first throttle access includes: the first electric expansion valve, for controlling to falling film type heat transfer zone supplement
The flow of refrigerant.
Further, the second throttle passage includes: the second electric expansion valve, for the cold medium flux in falling film type heat transfer zone
When not being able to satisfy the workload demand of unit, the flow of the refrigerant supplemented to full-liquid type heat transfer zone is controlled, to meet the load of unit
Demand.
According to another aspect of an embodiment of the present invention, a kind of control method of air-conditioner set is provided, is applied to as above-mentioned
Air-conditioner set, comprising: according to the workload demand of unit, determine the cold medium flux for entering falling film type heat transfer zone；Judge falling film type
Whether the cold medium flux of heat transfer zone meets workload demand；If it is not, determine the cold medium flux for entering full-liquid type heat transfer zone, control second
The aperture of electric expansion valve enters the cold medium flux of full-liquid type heat transfer zone to adjust.
Further, it in the workload demand according to unit, determines before entering the cold medium flux of drop mode heat transfer zone, also wraps
It includes: presetting best heat flow density range corresponding with falling film type heat transfer zone；Determination is corresponding with best heat flow density range
Cold medium flux range.
Further, according to the workload demand of unit, the cold medium flux for entering drop mode heat transfer zone is determined, comprising: according to
The workload demand of unit determines the corresponding cold medium flux demand of workload demand；According to cold medium flux demand and cold medium flux range
Determine the cold medium flux for entering drop mode heat transfer zone.
Further, the refrigerant stream for entering drop mode heat transfer zone is determined according to cold medium flux demand and cold medium flux range
Amount, comprising: comparison cold medium flux demand and cold medium flux range judge whether cold medium flux demand is located at cold medium flux range
It is interior；When cold medium flux demand is located within the scope of cold medium flux, determine that the cold medium flux for entering drop mode heat transfer zone is refrigerant stream
Amount demand；When cold medium flux demand is located at outside cold medium flux range, determine that entering drop mode exchanges heat according to cold medium flux range
The cold medium flux in area.
Further, the cold medium flux for entering drop mode heat transfer zone is determined according to cold medium flux range, comprising: if refrigerant
Flow demand is greater than the maximum value of cold medium flux range, it is determined that the cold medium flux into drop mode heat transfer zone is cold medium flux model
The maximum value enclosed；If cold medium flux demand is less than the minimum value of cold medium flux range, it is determined that into drop mode heat transfer zone
Cold medium flux is cold medium flux demand.
Further, judge whether the cold medium flux of falling film type heat transfer zone meets workload demand, comprising: need in cold medium flux
Ask be located at cold medium flux within the scope of or cold medium flux demand be less than cold medium flux range minimum value when, determine falling film type exchange heat
The cold medium flux in area meets workload demand；When cold medium flux demand is greater than the maximum value of cold medium flux range, falling film type is determined
The cold medium flux of heat transfer zone is unsatisfactory for workload demand.
Further, it is determined that into the cold medium flux of full-liquid type heat transfer zone, comprising: calculate cold medium flux demand and to falling liquid film
The difference of the flow of the refrigerant of formula heat transfer zone supplement；The cold medium flux for entering full-liquid type heat transfer zone is determined according to difference.
Another aspect according to an embodiment of the present invention, provides a kind of computer equipment, including memory, processor and deposits
The computer program that can be run on a memory and on a processor is stored up, processor realizes such as above-mentioned air conditioner when executing program
Group control method.
Another aspect according to an embodiment of the present invention provides a kind of storage medium comprising computer executable instructions,
Computer executable instructions by computer processor when being executed for executing such as above-mentioned air-conditioner set control method.
In the present invention, a kind of air-conditioner set is provided, wherein the evaporator of unit includes falling film type heat transfer zone and full liquid
Formula heat transfer zone, and it is provided with two-way throttle passage, two-way fluid path is come out from condenser, the control of first throttle access enters falling film type
The cold medium flux of heat transfer zone, the control of the second throttle passage enter the cold medium flux of full-liquid type heat transfer zone.By two-way throttle passage,
It can meet the cold medium flux and heat exchange demand under different load while obtaining best heat exchange efficiency, reach energy-efficient mesh
's.
Detailed description of the invention
Fig. 1 is a kind of optional structural block diagram of according to embodiments of the present invention 1 air-conditioner set；
Fig. 2 is the optional structural block diagram of another kind of according to embodiments of the present invention 1 air-conditioner set；And
Fig. 3 is a kind of optional flow chart of according to embodiments of the present invention 2 air-conditioner set control method.
Description of symbols:
1-1, compressor；1-2, condenser；1-3, electric cabinet；1-4, falling film type heat transfer zone；1-5, full-liquid type heat transfer zone；1-
6, electric expansion valve 1；1-7, electric expansion valve 2；
2-1, compressor；2-2, hybrid evaporator；2-3, device for drying and filtering；2-4, shell and tube condenser；2-5, electronics
Expansion valve 1；2-6, electric expansion valve 2；2-7, oil eliminator；2-8, injector；2-9, liquid-sighting glass.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Embodiment 1
A kind of air-conditioner set is provided in the preferred embodiment of the invention 1, specifically, Fig. 1 shows the air-conditioner set
A kind of optional structural block diagram, as shown in Figure 1, the unit includes: compressor, condenser, evaporator, in which: evaporator includes:
Falling film type heat transfer zone and full-liquid type heat transfer zone；Further include: first throttle access, one end are connect with condenser, the other end and falling liquid film
Formula heat transfer zone connection, for controlling the cold medium flux for entering falling film type heat transfer zone；Second throttle passage, one end and condenser connect
It connects, the other end is connect with full-liquid type heat transfer zone, for controlling the cold medium flux for entering full-liquid type heat transfer zone.
In the above-described embodiment, a kind of air-conditioner set is provided, wherein the evaporator of unit includes falling film type heat transfer zone
With full-liquid type heat transfer zone, and it is provided with two-way throttle passage, comes out two-way fluid path from condenser, the control of first throttle access enters
The cold medium flux of falling film type heat transfer zone, the control of the second throttle passage enter the cold medium flux of full-liquid type heat transfer zone.Pass through two-way section
Logical circulation road can meet the cold medium flux and heat exchange demand under different load, reach section while obtaining best heat exchange efficiency
The purpose of energy.
Wherein, falling film type heat transfer zone is located at the top of full-liquid type heat transfer zone.First throttle access includes: the first electronic expansion
Valve, for controlling the flow of the refrigerant supplemented to falling film type heat transfer zone.Second throttle passage includes: the second electric expansion valve, is used
When the cold medium flux in falling film type heat transfer zone is not able to satisfy the workload demand of unit, control to the cold of full-liquid type heat transfer zone supplement
The flow of matchmaker, to meet the workload demand of unit.
In conjunction with hybrid evaporator, new throttle style is designed, point 2 tunnels throttling passes through cloth using electric expansion valve 1 all the way
Diaphragm enters Falling film heat transfer area, is directly entered full liquid zone using electric expansion valve 2 all the way.
Electric expansion valve 1 be it is a kind of by refrigerant by medium temperature high pressure refrigerant liquid section stream become low-temp low-pressure refrigerant liquid
Element can accurately control cold medium flux by stepper motor, so that heat exchanger tube has the best cloth film thickness of refrigerant
With and uniformly distributed degree, to obtain best heat transfer effect.
Electric expansion valve 2 is the member that refrigerant is become to low-temp low-pressure refrigerant liquid by the refrigerant liquid section stream of medium temperature high pressure
Part can accurately control cold medium flux by stepper motor, cooperate 1 aperture of electric expansion valve, meet different load
Under coolant quantity and heat exchange demand.
Divide the throttling of 2 tunnels, pipeline on-way resistance can be reduced, in complete machine structure layout, space can also be saved.The structure
Form ensure that the stabilization of unit, efficient operation.
Further, the unit further include: electric cabinet, for realizing the control to unit.
Another air-conditioner set is additionally provided in the preferred embodiment of the invention 1, which is Worm type water-cooled cold water
Unit, specifically, Fig. 2 shows a kind of optional structural block diagrams of the air-conditioner set, as shown in Fig. 2, the unit includes:
2-1, compressor, 2-2, hybrid evaporator, 2-3, device for drying and filtering, 2-4, shell and tube condenser, 2-5, electronics
Expansion valve 1,2-6, electric expansion valve 2.Furthermore, further includes: 2-7, oil eliminator, 2-8, injector, 2-9, liquid-sighting glass.
Preferably, the compressor of unit can be screw compressor, and screw compressor is a kind of rotary type displacement formula
Compressor.It completes the sucking, compression and exhaust process of steam using the tooth socket volume of screw rod and the variation of position.Thus will
Low temperature, low pressure refrigerant vapor compression at high temperature and pressure refrigerant vapour, compressor according to load variations control refrigerant stream
Amount.
In the present invention, in conjunction with mixing downward film evaporator, new throttle style is designed, point 2 tunnels throttling, all the way using electricity
Sub- expansion valve 1 enters Falling film heat transfer area by filming device, is directly entered full liquid zone using electric expansion valve 2 all the way.
By two-way throttle passage, the refrigerant stream under different load can be met while obtaining best heat exchange efficiency
Amount and heat exchange demand, reach energy-efficient purpose.
Embodiment 2
The air-conditioner set provided in 1 based on the above embodiment, additionally provides a kind of sky in the preferred embodiment of the invention 2
The control method of unit is adjusted, which can be applied directly on various air-conditioner sets, can also be applied to air-conditioning
On other devices of unit partial function, when specific implementation, can by air-conditioner set or other devices install software, APP,
Or the mode of air-conditioner set or the corresponding program of other Setup Controllers is written to realize.Specifically, Fig. 3 shows this method
A kind of optional flow chart, as shown in figure 3, this method comprises the following steps S302-S306:
S302: according to the workload demand of unit, the cold medium flux for entering drop mode heat transfer zone is determined；
S304: judge whether the cold medium flux of falling film type heat transfer zone meets workload demand；
S306: if it is not, determining the cold medium flux for entering full-liquid type heat transfer zone, the aperture of the second electric expansion valve is controlled to adjust
Section enters the cold medium flux of full-liquid type heat transfer zone.
In the above-described embodiment, provide a kind of air-conditioner set control method, according to the workload demand of unit, determine into
Enter to drop the cold medium flux of mode heat transfer zone, and judge whether the cold medium flux of falling film type heat transfer zone meets workload demand, in falling liquid film
When the cold medium flux of formula heat transfer zone is unsatisfactory for workload demand, the cold medium flux for entering full-liquid type heat transfer zone is determined, to meet load
Demand.By two-way fluid infusion access, can while obtaining best heat exchange efficiency, meet cold medium flux under different load and
Heat exchange demand reaches energy-efficient purpose.
In the above scheme, it in the workload demand according to unit, determines before entering the cold medium flux of drop mode heat transfer zone,
Further include: preset best heat flow density range corresponding with falling film type heat transfer zone；Determining and best heat flow density range pair
The cold medium flux range answered.Experiments verify that having between the heat flow density 15-35kw/ ㎡ of falling film type evaporation pipe highest comprehensive
The coefficient of heat transfer is closed, therefore, best heat flow density range is 15-35kw/ ㎡.Before best heat flow density range is set, may be used also
Falling film type evaporation heat exchanger tube area is arranged, such as by the falling film type evaporation heat exchanger tube area of upper half set nominal condition
60-70% matches the filming device above it with this.
In one preferred embodiment of the invention, according to the workload demand of unit, determines and enter drop mode heat transfer zone
Cold medium flux, comprising: according to the workload demand of unit, determine the corresponding cold medium flux demand of workload demand；According to refrigerant stream
Amount demand and cold medium flux range determine the cold medium flux for entering drop mode heat transfer zone.
Further, the refrigerant stream for entering drop mode heat transfer zone is determined according to cold medium flux demand and cold medium flux range
Amount, comprising: comparison cold medium flux demand and cold medium flux range judge whether cold medium flux demand is located at cold medium flux range
It is interior；When cold medium flux demand is located within the scope of cold medium flux, determine that the cold medium flux for entering drop mode heat transfer zone is refrigerant stream
Amount demand；When cold medium flux demand is located at outside cold medium flux range, determine that entering drop mode exchanges heat according to cold medium flux range
The cold medium flux in area.
Wherein, the cold medium flux for entering drop mode heat transfer zone is determined according to cold medium flux range, comprising: if cold medium flux
Demand is greater than the maximum value of cold medium flux range, it is determined that the cold medium flux into drop mode heat transfer zone is cold medium flux range
Maximum value；If cold medium flux demand is less than the minimum value of cold medium flux range, it is determined that into the refrigerant of drop mode heat transfer zone
Flow is cold medium flux demand.
In presently preferred embodiment, judge whether the cold medium flux of falling film type heat transfer zone meets load
Demand, comprising: be located within the scope of cold medium flux in cold medium flux demand or cold medium flux demand is less than cold medium flux range most
When small value, determine that the cold medium flux of falling film type heat transfer zone meets workload demand；It is greater than cold medium flux range in cold medium flux demand
Maximum value when, determine that the cold medium flux of falling film type heat transfer zone is unsatisfactory for workload demand.
Preferably, the cold medium flux for entering full-liquid type heat transfer zone is determined, comprising: calculate cold medium flux demand and to falling film type
The difference of the flow of the refrigerant of heat transfer zone supplement；The cold medium flux for entering full-liquid type heat transfer zone is determined according to difference.
Under different load, 1 aperture of electric expansion valve is adjusted, so that cold medium flux is adjusted, to control falling film type evaporation pipe
Heat flow density, maintain cold medium flux range, if exceed cold medium flux range, be greater than cold medium flux range maximum value, say
Bright coolant quantity cannot reach workload demand, then can control 2 aperture of electric expansion valve to supplement flow.Optionally, electric expansion valve 2
The supplement of cold medium flux is carried out according to end temperature difference principle.
Embodiment 3
The air-conditioner set control method provided in 2 based on the above embodiment, also provides in the preferred embodiment of the invention 3
A kind of computer equipment, on a memory and the computer that can run on a processor including memory, processor and storage
Program, the processor realize such as above-mentioned air-conditioner set control method when executing described program.
In the above-described embodiment, provide a kind of air-conditioner set control method, according to the workload demand of unit, determine into
Enter to drop the cold medium flux of mode heat transfer zone, and judge whether the cold medium flux of falling film type heat transfer zone meets workload demand, in falling liquid film
When the cold medium flux of formula heat transfer zone is unsatisfactory for workload demand, the cold medium flux for entering full-liquid type heat transfer zone is determined, to meet load
Demand.By two-way fluid infusion access, can while obtaining best heat exchange efficiency, meet cold medium flux under different load and
Heat exchange demand reaches energy-efficient purpose.
Embodiment 4
The air-conditioner set control method provided in 2 based on the above embodiment, also provides in the preferred embodiment of the invention 4
A kind of storage medium comprising computer executable instructions, the computer executable instructions are executed by computer processor
When for executing such as above-mentioned air-conditioner set control method.
In the above-described embodiment, provide a kind of air-conditioner set control method, according to the workload demand of unit, determine into
Enter to drop the cold medium flux of mode heat transfer zone, and judge whether the cold medium flux of falling film type heat transfer zone meets workload demand, in falling liquid film
When the cold medium flux of formula heat transfer zone is unsatisfactory for workload demand, the cold medium flux for entering full-liquid type heat transfer zone is determined, to meet load
Demand.By two-way fluid infusion access, can while obtaining best heat exchange efficiency, meet cold medium flux under different load and
Heat exchange demand reaches energy-efficient purpose.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
The common knowledge in the art that person's adaptive change follows general principle of the invention and do not invent including the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (13)
1. a kind of air-conditioner set, including compressor, condenser, evaporator characterized by comprising
The evaporator includes: falling film type heat transfer zone and full-liquid type heat transfer zone；
First throttle access, one end are connect with the condenser, and the other end is connect with the falling film type heat transfer zone；
Second throttle passage, one end are connect with the condenser, and the other end is connect with the full-liquid type heat transfer zone.
2. unit according to claim 1, which is characterized in that the falling film type heat transfer zone is located at the full-liquid type heat transfer zone
Top.
3. unit according to claim 1, which is characterized in that the first throttle access includes: the first electric expansion valve,
For controlling the cold medium flux into the falling film type heat transfer zone.
4. unit according to claim 1, which is characterized in that second throttle passage includes: the second electric expansion valve,
When not being able to satisfy the workload demand of the unit for the cold medium flux in the falling film type heat transfer zone, control enters the full liquid
The cold medium flux of formula heat transfer zone, to meet the workload demand of the unit.
5. a kind of control method of air-conditioner set, is applied to air-conditioner set according to any one of claims 1-4, feature exists
In, comprising:
According to the workload demand of the unit, the cold medium flux for entering the falling film type heat transfer zone is determined；
Judge whether the cold medium flux of the falling film type heat transfer zone meets the workload demand；
If it is not, determine enter the full-liquid type heat transfer zone cold medium flux, control the second electric expansion valve aperture with adjust into
Enter the cold medium flux of the full-liquid type heat transfer zone.
6. according to the method described in claim 5, it is characterized in that, determining in the workload demand according to the unit and entering institute
Before the cold medium flux for stating falling film type heat transfer zone, further includes:
Preset best heat flow density range corresponding with the falling film type heat transfer zone；
Determining cold medium flux range corresponding with the best heat flow density range.
7. according to the method described in claim 6, it is characterized in that, being determined described in entering according to the workload demand of the unit
The cold medium flux of falling film type heat transfer zone, comprising:
According to the workload demand of the unit, the corresponding cold medium flux demand of the workload demand is determined；
The cold medium flux for entering the falling film type heat transfer zone is determined according to the cold medium flux demand and the cold medium flux range.
8. the method according to the description of claim 7 is characterized in that according to the cold medium flux demand and the cold medium flux model
Enclose the cold medium flux for determining and entering the falling film type heat transfer zone, comprising:
The cold medium flux demand and the cold medium flux range are compared, it is described cold to judge whether the cold medium flux demand is located at
In matchmaker's range of flow；
When the cold medium flux demand is located within the scope of the cold medium flux, the refrigerant for entering the falling film type heat transfer zone is determined
Flow is the cold medium flux demand；
When the cold medium flux demand is located at outside the cold medium flux range, is determined according to the cold medium flux range and enter institute
State the cold medium flux of falling film type heat transfer zone.
9. according to the method described in claim 8, entering the falling liquid film it is characterized in that, determining according to the cold medium flux range
The cold medium flux of formula heat transfer zone, comprising:
If the cold medium flux demand is greater than the maximum value of the cold medium flux range, it is determined that enter the falling film type and exchange heat
The cold medium flux in area is the maximum value of the cold medium flux range；
If the cold medium flux demand is less than the minimum value of the cold medium flux range, it is determined that enter the falling film type and exchange heat
The cold medium flux in area is the cold medium flux demand.
10. the method according to the description of claim 7 is characterized in that judge the falling film type heat transfer zone cold medium flux whether
Meet the workload demand, comprising:
It is located within the scope of the cold medium flux in the cold medium flux demand or the cold medium flux demand is less than the refrigerant stream
When measuring the minimum value of range, determine that the cold medium flux of the falling film type heat transfer zone meets the workload demand；
When the cold medium flux demand is greater than the maximum value of the cold medium flux range, the cold of the falling film type heat transfer zone is determined
Matchmaker's flow is unsatisfactory for the workload demand.
11. according to the method described in claim 10, it is characterized in that, entering the cold of the full-liquid type heat transfer zone if it is not, determining
Matchmaker's flow, comprising:
The cold medium flux demand be greater than the cold medium flux range maximum value when, calculate the cold medium flux demand and into
Enter the difference of the cold medium flux of the falling film type heat transfer zone；
The cold medium flux for entering the full-liquid type heat transfer zone is determined according to the difference.
12. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized as described in any one of claim 5 to 11 when executing described program
The control method of air-conditioner set.
13. a kind of storage medium comprising computer executable instructions, the computer executable instructions are by computer disposal
For executing the control method of the air-conditioner set as described in any one of claim 5 to 11 when device executes.
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| US20110127027A1 (en) * | 2009-12-01 | 2011-06-02 | Hitachi Plant Technologies, Ltd. | Cooling method and cooling system of electronic device |
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| CN105910357A (en) * | 2016-04-25 | 2016-08-31 | 广东美的暖通设备有限公司 | Air conditioner system and valve control method thereof |
| CN209605448U (en) * | 2019-01-14 | 2019-11-08 | 珠海格力电器股份有限公司 | Air conditioning unit |
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| US20110127027A1 (en) * | 2009-12-01 | 2011-06-02 | Hitachi Plant Technologies, Ltd. | Cooling method and cooling system of electronic device |
| WO2015100965A1 (en) * | 2013-12-30 | 2015-07-09 | 麦克维尔空调制冷(武汉)有限公司 | Falling film evaporator |
| CN105387653A (en) * | 2015-12-21 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Evaporator and water chilling unit having same |
| CN105910357A (en) * | 2016-04-25 | 2016-08-31 | 广东美的暖通设备有限公司 | Air conditioner system and valve control method thereof |
| CN209605448U (en) * | 2019-01-14 | 2019-11-08 | 珠海格力电器股份有限公司 | Air conditioning unit |
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| CN109631421B (en) | 2023-05-30 |
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