CN105928146B - The control method of heating and air conditioner - Google Patents

The control method of heating and air conditioner Download PDF

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Publication number
CN105928146B
CN105928146B CN201610286964.6A CN201610286964A CN105928146B CN 105928146 B CN105928146 B CN 105928146B CN 201610286964 A CN201610286964 A CN 201610286964A CN 105928146 B CN105928146 B CN 105928146B
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CN
China
Prior art keywords
aperture
temperature
pressure
outdoor environment
expulsion
Prior art date
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CN201610286964.6A
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CN105928146A (en
Inventor
任超
李金波
刘湍顺
杨亚新
白军辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Priority to CN201610286964.6A priority Critical patent/CN105928146B/en
Priority to PCT/CN2016/087935 priority patent/WO2017185516A1/en
Publication of CN105928146A publication Critical patent/CN105928146A/en
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Publication of CN105928146B publication Critical patent/CN105928146B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode

Abstract

The invention discloses a kind of control methods of heating and air conditioner.Heating and air conditioner includes:Duplex cylinder compressor, commutation component, outdoor heat exchanger, indoor heat exchanger, gas-liquid separator, the air entry of the first cylinder are connected to the first liquid storage device, and the value range of the delivery space ratio of the second cylinder and the first cylinder is 1%~10%;The component that commutates includes the first valve port to the 4th valve port, and the 4th valve port is connected with the first liquid storage device;Gas-liquid separator includes gas vent, first interface and second interface, gas vent and the second cylinders, it is in series with the adjustable first throttle element of aperture between first interface and outdoor heat exchanger, adjustable second restricting element of aperture is in series between second interface and indoor heat exchanger.The control method of the heating and air conditioner of the present invention, effectively improves energy efficiency of air conditioner.

Description

The control method of heating and air conditioner
Technical field
The present invention relates to refrigerating fields, more particularly, to a kind of control method of heating and air conditioner.
Background technology
Current air-conditioning refrigeration system does not optimize cycle to the gaseous refrigerant after throttling and into before evaporator Design causes gaseous refrigerant to influence evaporator heat exchange performance, and increases compressor compresses power consumption, to influence air conditioner Efficiency is horizontal.Air injection enthalpy-increasing and Two-stage Compression technology can improve heating capacity water of the air-conditioning system under low temperature and ultralow temperature It is flat, but for the cooling condition that air-conditioning is commonly used, efficiency is promoted very limited.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the present invention proposes a kind of control method of heating and air conditioner, energy efficiency of air conditioner is can effectively improve, effectively Promote energy-saving and emission-reduction.
The control method of heating and air conditioner according to the ... of the embodiment of the present invention, heating and air conditioner include:Duplex cylinder compressor, The duplex cylinder compressor includes shell, the first cylinder, the second cylinder and the first liquid storage device, and the shell is equipped with exhaust outlet, institute It states the first cylinder and second cylinder is respectively provided in the shell, first liquid storage device is located at outside the shell, described The air entry of first cylinder is connected to first liquid storage device, the delivery space ratio of second cylinder and first cylinder Value range be 1%~10%;Commutate component, and the commutation component includes the first valve port to the 4th valve port, first valve Mouth is connected to one of in the second valve port and third valve port, the 4th valve port and second valve port and the third valve Another connection in mouthful, first valve port are connected with the exhaust outlet, the 4th valve port and the first liquid storage device phase Even;Outdoor heat exchanger and indoor heat exchanger, the first end of the outdoor heat exchanger are connected with second valve port, and the interior is changed The first end of hot device is connected with the third valve port;Gas-liquid separator, the gas-liquid separator include gas vent, first interface And second interface, the gas vent are connected with the air entry of second cylinder, the first interface and the outdoor heat exchange The second end of device is connected, and the second interface is connected with the second end of the indoor heat exchanger, the first interface and the room It is in series with the adjustable first throttle element of aperture between external heat exchanger, connects between the second interface and the indoor heat exchanger There is adjustable second restricting element of aperture;When heating and air conditioner is run, the first throttle element and the second throttling member The restricting element for being located at upstream in part is level-one restricting element, is located in the first throttle element and second restricting element The restricting element in downstream is two-step throttle element, and the control method includes the following steps:First according to the first detection object Testing result adjust the aperture of the level-one restricting element to aperture is set, then according to the detection knot to the second detection object The aperture that fruit adjusts the two-step throttle element is less than the two level to aperture, the setting aperture of the level-one restricting element is set The testing result of the setting aperture of restricting element, the first detection object detects the testing result of object not with described second Together;The wherein described first detection object includes the exhaust temperature of outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet Degree, exhaust outlet pressure at expulsion, from the gas vent be discharged refrigerant intermediate pressure, from the gas vent be discharged it is cold At least one of medium temperature of matchmaker;The second detection object includes the operation frequency of outdoor environment temperature, duplex cylinder compressor Rate, the delivery temperature of exhaust outlet, the pressure at expulsion of exhaust outlet, the intermediate pressure for the refrigerant being discharged from the gas vent, from institute State at least one of the medium temperature of refrigerant of gas vent discharge.
The control method of heating and air conditioner according to the ... of the embodiment of the present invention can be with by the way that above-mentioned duplex cylinder compressor is arranged Energy efficiency of air conditioner is effectively improved, effectively facilitates energy-saving and emission-reduction, while by setting gas-liquid separator, heat exchange efficiency can be improved, Compressor compresses power consumption is reduced, air conditioner ability and efficiency are further increased, it is right by the aperture for first adjusting level-one restricting element The aperture of two-step throttle element is adjusted again afterwards, so that the efficiency of system is optimal
In some embodiments of the invention, the first throttle element is electric expansion valve, second restricting element For electric expansion valve.
In some embodiments of the invention, it is in series with electricity between the gas vent and the air entry of second cylinder Magnet valve.
In some embodiments of the invention, the value range of gas-liquid separator volume is 100mL-500mL.
In some embodiments of the invention, the first detection object and the second detection object are outdoor environment Level-one throttling member is calculated according to the outdoor environment temperature T4 and running frequency F that detect in temperature T4 and running frequency F Then the setting aperture of part and two-step throttle element adjusts corresponding level-one restricting element and two-step throttle member according to setting aperture The aperture of part.
In some embodiments of the invention, the first detection object is outdoor environment temperature T4 and running frequency F, first The setting aperture of level-one restricting element is first calculated according to the outdoor environment temperature T4 and the running frequency F, then root The aperture of the level-one restricting element is adjusted according to setting aperture;The second detection object is outdoor environment temperature T4, runs frequency Rate F and pressure at expulsion;Or the second detection object is outdoor environment temperature T4, running frequency F and delivery temperature, first root Setting pressure at expulsion or setting delivery temperature is calculated according to the outdoor environment temperature T4 and the running frequency F, then According to it is actually detected to pressure at expulsion or delivery temperature adjust two-step throttle element aperture so that the exhaust detected Pressure or delivery temperature reach setting pressure at expulsion or setting delivery temperature.
In some embodiments of the invention, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to The aperture of different restricting elements, the first detection object is outdoor environment temperature T4, according to the actually detected outdoor environment temperature arrived The aperture of the corresponding opening value adjustment level-one restricting element in outdoor temperature section where spending T4;The second detection object is room External environment temperature T4, running frequency F and pressure at expulsion;Or the second detection object is outdoor environment temperature T4, operation frequency Rate F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency F be calculated setting pressure at expulsion or Person sets delivery temperature, and the aperture of two-step throttle element is then adjusted according to the actually detected pressure at expulsion arrived or delivery temperature So that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting delivery temperature.
In some embodiments of the invention, medium temperature or default intermediate pressure, the first detection object are preset For intermediate pressure, either medium temperature adjusts level-one restricting element according to the actually detected intermediate pressure arrived or medium temperature Aperture so that the intermediate pressure detected either medium temperature reaches default intermediate pressure or default medium temperature;Described Two detection objects are outdoor environment temperature T4, running frequency F and pressure at expulsion;Or the second detection object is outdoor environment Temperature T4, running frequency F and delivery temperature are calculated according to the outdoor environment temperature T4 and the running frequency F first Setting pressure at expulsion either sets delivery temperature and then adjusts two level according to the actually detected pressure at expulsion arrived or delivery temperature The aperture of restricting element is so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting exhaust temperature Degree.
In some embodiments of the invention, medium temperature or default intermediate pressure, the first detection object are preset For intermediate pressure, either medium temperature adjusts level-one restricting element according to the actually detected intermediate pressure arrived or medium temperature Aperture so that the intermediate pressure detected either medium temperature reaches default intermediate pressure or default medium temperature;Described Two detection objects are outdoor environment temperature T4 and running frequency F, first according to the outdoor environment temperature T4 and operation frequency The setting aperture of two-step throttle element is calculated in rate F, and the aperture of the two-step throttle element is then adjusted according to setting aperture.
In some embodiments of the invention, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to The aperture of different restricting elements, the first detection object is outdoor environment temperature T4, according to the actually detected outdoor environment temperature arrived The aperture of the corresponding opening value adjustment level-one restricting element in outdoor temperature section where spending T4;The second detection object is room Two level is calculated according to the outdoor environment temperature T4 and the running frequency F first in external environment temperature T4 and running frequency F Then the setting aperture of restricting element adjusts the aperture of the two-step throttle element according to setting aperture.
Description of the drawings
Fig. 1 is the schematic diagram according to the heating and air conditioner of the embodiment of the present invention;
Fig. 2 is the schematic diagram according to the heating and air conditioner equipped with solenoid valve of the embodiment of the present invention;
Fig. 3 is the schematic diagram according to the duplex cylinder compressor of the embodiment of the present invention;
Fig. 4 is the flow chart of control method when being freezed according to the heating and air conditioner of the embodiment of the present invention;
Fig. 5 is the flow chart of control method when being heated according to the heating and air conditioner of the embodiment of the present invention.
Reference numeral:
Heating and air conditioner 100,
Duplex cylinder compressor 1, shell 10, the first cylinder 11, the second cylinder 12, the first liquid storage device 13, exhaust outlet 15,
Commutate component 2, the first valve port D, the second valve port C, third valve port E, the 4th valve port S,
Outdoor heat exchanger 3, indoor heat exchanger 4,
Gas-liquid separator 5, gas vent m, first interface f, second interface g,
First throttle element 6, the second restricting element 7,
Solenoid valve 20.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to The embodiment of attached drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral;Can be that machinery connects It connects, can also be to be electrically connected or can communicate each other;It can be directly connected, can also indirectly connected through an intermediary, it can be with It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
Heating and air conditioner 100 according to the ... of the embodiment of the present invention, wherein changes in temperature is described in detail with reference to figure 1- Fig. 3 first below Type air conditioner 100 has refrigeration mode and heating mode.
As shown in Figure 1-Figure 3, heating and air conditioner 100 according to the ... of the embodiment of the present invention, including:Duplex cylinder compressor 1, commutation Component 2, outdoor heat exchanger 3 and indoor heat exchanger 4, gas-liquid separator 5, first throttle element 6 and the second restricting element 7.Wherein Duplex cylinder compressor 1 includes shell 10, the first cylinder 11, the second cylinder 12 and the first liquid storage device 13, and shell 10 is equipped with exhaust outlet 15, the first cylinder 11 and the second cylinder 12 are respectively provided in shell 10, and the first liquid storage device 13 is located at outside shell 10, the first cylinder 11 Air entry be connected to the first liquid storage device 13.That is, the first cylinder 11 and the second cylinder 12 carry out independent compression process, from The compressed refrigerant of first cylinder 11 discharge and the compressed refrigerant being discharged from the second cylinder 12 are drained into shell 10 respectively It is interior then from exhaust outlet 15 be discharged.
The value range of the delivery space ratio of second cylinder 12 and the first cylinder 11 is 1%~10%.Further, The value range of the delivery space ratio of two cylinders 12 and the first cylinder 11 is 1%~9%, it is preferable that the second cylinder 12 and the The value range of the delivery space ratio of one cylinder 11 is 4%~9%.Such as second the exhaust of cylinder 12 and the first cylinder 11 hold Product ratio can be the parameters such as 4%, 5%, 8% or 8.5%.
The component 2 that commutates includes the first valve port D to the 4th valve port S, in the first valve port D and the second valve port C and third valve port E One of connection, the 4th valve port S are connected to another in the second valve port C and the third valve port E, the first valve port D and row Gas port 15 is connected, and the 4th valve port S is connected with the first liquid storage device 13.The first end of outdoor heat exchanger 3 is connected with the second valve port C, room The first end of interior heat exchanger 4 is connected with third valve port E.Specifically, when heating and air conditioner 100 is freezed, the first valve port D and Two valve port C are connected to and third valve port E is connected to the 4th valve port S, when heating and air conditioner 100 heats, the first valve port D and third Valve port E is connected to and the second valve port C is connected to the 4th valve port S.Preferably, commutation component 2 is four-way valve.
Gas-liquid separator 5 includes gas vent m, first interface f and second interface g, gas vent m and the second cylinder 12 Air entry is connected, and first interface f is connected with the second end of outdoor heat exchanger 3, the second end of second interface g and indoor heat exchanger 4 It is connected, the adjustable first throttle element 6 of aperture, second interface g and interior is in series between first interface f and outdoor heat exchanger 3 Adjustable second restricting element of aperture 7 is in series between heat exchanger 4.Optionally, first throttle element 6 is electric expansion valve, the Two restricting elements 7 are electric expansion valve, it is of course possible to which understanding, first throttle element 6 and the second restricting element 7 can be with It is the adjustable element of other apertures such as heating power expansion valve.
When heating and air conditioner 100 is freezed, the high temperature and pressure refrigerant being discharged from the exhaust outlet 15 of duplex cylinder compressor 1 passes through First valve port D and the second valve port C are drained into outdoor heat exchanger 3 and carry out condensation heat dissipation, and the liquid being discharged from outdoor heat exchanger 3 is cold Matchmaker is drained into gas-liquid separator 5 from first interface f after the level-one reducing pressure by regulating flow of first throttle element 6 and carries out gas-liquid point From the intermediate pressure gaseous coolant separated, which is drained into from gas vent m in the second cylinder 12, to be compressed.
The intermediate pressure liquid refrigerant being discharged from the second interface g of gas-liquid separator 5 passes through the two level of the second restricting element 7 It is drained into indoor heat exchanger 4 and is exchanged heat to reduce indoor environment temperature after reducing pressure by regulating flow, is discharged from indoor heat exchanger 4 cold Matchmaker is drained by third valve port E and the 4th valve port S in the first liquid storage device 13, and the refrigerant being discharged from the first liquid storage device 13 is drained into It is compressed in first cylinder 11.
When heating and air conditioner 100 heats, the high temperature and pressure refrigerant being discharged from the exhaust outlet 15 of duplex cylinder compressor 1 passes through First valve port D and third valve port E, which is drained into indoor heat exchanger 4, carries out condensation heat dissipation to increase indoor environment temperature, from interior The high-pressure liquid refrigerant that heat exchanger 4 is discharged is drained into gas after the level-one reducing pressure by regulating flow of the second restricting element 7 from second interface g Gas-liquid separation is carried out in liquid/gas separator 5, the intermediate pressure gaseous coolant separated is drained into the second cylinder 12 from gas vent m Inside compressed.
The intermediate pressure liquid refrigerant being discharged from the first interface f of gas-liquid separator 5 passes through the two level of first throttle element 6 Be drained into outdoor heat exchanger 3 and exchange heat after reducing pressure by regulating flow, the refrigerant being discharged from outdoor heat exchanger 3 by the second valve port C and 4th valve port S is drained into the first liquid storage device 13, and the refrigerant being discharged from the first liquid storage device 13 is drained into the first cylinder 11 and carries out Compression.
From this analysis, when heating and air conditioner 100 is run, the refrigerant of different pressures state has respectively entered first In cylinder 11 and the second cylinder 12,12 complete independently compression process of the first cylinder 11 and the second cylinder is discharged from the first cylinder 11 Compressed refrigerant and the compressed refrigerant that is discharged from the second cylinder 12 be discharged in shell 10 after mixing from 15 row of exhaust outlet Go out, simultaneously because the value range of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%~10%, flow is less And the higher refrigerant of pressure state is drained into the second smaller cylinder 12 of delivery space and is compressed, so as to improve energy Effect, energy-saving and emission-reduction.
Simultaneously by being equipped with gas-liquid separator 5 between outdoor heat exchanger 3 and indoor heat exchanger 4, to gas-liquid separator 5 It is expelled back into the second cylinder 12 and compresses after a part of gaseous coolant is separated, room is flowed into when thus reducing refrigeration Gas content in the refrigerant of interior heat exchanger 4 and while reducing heating, are flowed into the gas content in the refrigerant of outdoor heat exchanger 3, Reduce influence of the gaseous coolant to the heat exchange property of indoor heat exchanger 4 or outdoor heat exchanger 3 as evaporator, so as to To improve heat exchange efficiency, compressor compresses power consumption is reduced.
Heating and air conditioner 100 according to the ... of the embodiment of the present invention can be carried effectively by the way that above-mentioned duplex cylinder compressor 1 is arranged High energy efficiency of air conditioner effectively facilitates energy-saving and emission-reduction, while by the way that gas-liquid separator 5 is arranged, can improve heat exchange efficiency, reduce pressure Contracting machine compression power consumption, further increases air conditioner ability and efficiency.
As shown in Fig. 2, in some embodiments of the invention, being gone here and there between gas vent m and the air entry of the second cylinder 12 It is associated with solenoid valve 20, it, can be with by closing solenoid valve 20 thus when the liquid coolant in gas-liquid separator 5 exceeds safety levels It avoids liquid refrigerants from entering in the second cylinder 12, so as to avoid duplex cylinder compressor 1 that liquid hammer occurs, extends duplex cylinder compressor 1 service life.It is possible to further which liquid level sensor is being arranged on gas-liquid separator 5, pass through the detection of liquid level sensor The open and-shut mode of output control solenoid valve 20.
In some embodiments of the invention, the value range of the volume of gas-liquid separator 5 is 100mL-500mL.
Heating and air conditioner according to the above embodiment of the present invention (is set rated cooling capacity as 3.5kw, by by inventor The delivery space ratio of two cylinders and the first cylinder is set as the efficiency 7.6%) under different operating modes and existing cold-warm type sky It adjusts the efficiency of device to be at the same conditions compared, obtains following data:
Measurement condition Prior art efficiency Technical solution of the present invention efficiency Promotion ratio
Specified refrigeration 3.93 4.26 8.40%
Centre refrigeration 5.88 6.18 5.10%
Specified heating 3.64 3.91 7.42%
Centre heating 5.55 5.89 6.13%
Low-temperature heating 2.57 2.73 6.23%
APF 4.61 4.92 6.72%
It follows that heating and air conditioner according to the ... of the embodiment of the present invention is relative to existing cold-warm type compressor, each work Condition efficiency and whole year efficiency APF are obviously improved.
Inventor is by the cold-warm type air-conditioning of different rated cooling capacities and the embodiment of the present invention of different delivery spaces ratio simultaneously Device is compared with the heating and air conditioner under existing identical operating mode, it is found that efficiency has promotion, such as inventor by examination The heating and air conditioner for issuing after examination and approval the existing embodiment of the present invention (sets rated cooling capacity as 2.6kw, by the second cylinder and the first cylinder Delivery space ratio is set as 9.2%) compared with the heating and air conditioner under existing identical operating mode, and efficiency improves 7.3%.
The control method of heating and air conditioner according to the ... of the embodiment of the present invention is described in detail below with reference to Fig. 1-Fig. 5, wherein Heating and air conditioner is heating and air conditioner according to the above embodiment of the present invention.When heating and air conditioner is run, first segment The restricting element for being located at upstream in fluid element and the second restricting element is level-one restricting element, first throttle element and the second throttling The restricting element for being located at downstream in element is two-step throttle element, and in other words, in refrigeration, first throttle element is that level-one throttles Element, the second restricting element are two-step throttle element.In heating, the second restricting element is level-one restricting element, first throttle Element is two-step throttle element.
Control method according to the ... of the embodiment of the present invention includes the following steps:First according to the detection knot to the first detection object Fruit adjusts the aperture of level-one restricting element, then adjusts opening for two-step throttle element according to the testing result to the second detection object Degree, the setting aperture of level-one restricting element are less than the setting aperture of two-step throttle element, the testing result of the first detection object and The testing result of second detection object is different.It needs to illustrate, testing result and the second detection of the first detection object The testing result difference of object refer to level-one restricting element and two-step throttle element cannot use simultaneously same state parameter into Row adjusting control, in other words, required relevant parameter for adjusting level-one restricting element and for adjusting two-step throttle element Required relevant parameter it is different.
Wherein first detection object includes the exhaust temperature of outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet The centre of degree, the pressure at expulsion of exhaust outlet, the intermediate pressure for the refrigerant being discharged from gas vent, the refrigerant being discharged from gas vent At least one of temperature.Second detection object include outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet row Temperature degree, the pressure at expulsion of exhaust outlet, the intermediate pressure for the refrigerant being discharged from gas vent, the refrigerant that is discharged from gas vent At least one of medium temperature.
That is, as shown in Figure 4 and Figure 5, no matter freezing or heating, when heating and air conditioner is run, acquire Then parameter needed for processing control level-one restricting element and two-step throttle element is all first to adjust level-one according to obtained parameter The aperture of restricting element is until setting aperture, then adjusts the aperture of two-step throttle element until aperture is set, when level-one section again When fluid element and two-step throttle element are adjusted to setting aperture, the aperture of level-one restricting element is less than opening for two-step throttle element Degree.Of course, it should be understood that the parameter and acquisition process needed for acquisition process control level-one restricting element control two-step throttle The step of parameter needed for element, can be carried out at the same time and can also successively carry out.
After the aperture of level-one restricting element and the aperture of two-step throttle element are satisfied by condition, can operation n seconds after, Again the first detection object of detection and the second detection object, then adjust level-one restricting element and two-step throttle according to testing result The aperture of element so repeats.Certain repeat condition is without being limited thereto, such as can be after receiving the operational order of user, weight The first detection object of new detection and the second detection object, then adjust level-one restricting element and two-step throttle member according to testing result The aperture of part.In other words, in refrigeration or heating, condition is satisfied by the aperture of level-one restricting element and two-step throttle element Afterwards, it can run n seconds or after receiving user operation signal, first throttle element and the second restricting element are being opened The relevant parameter of degree detects judgement again, is then opened according to judgement result adjustment first throttle element and second restricting element Degree so repeats.
The control method of heating and air conditioner according to the ... of the embodiment of the present invention, by the aperture for first adjusting level-one restricting element Then the aperture of two-step throttle element is adjusted again, so that the efficiency of system is optimal.
Control method according to the several specific embodiments of the present invention is described below.
Embodiment 1:
In this embodiment, the first detection object and the second detection object are outdoor environment temperature T4 and running frequency F, The setting of level-one restricting element and two-step throttle element is calculated according to the outdoor environment temperature T4 and running frequency F that detect Then aperture adjusts the aperture of corresponding level-one restricting element and two-step throttle element according to setting aperture.
It is understood that calculation formula is located in the electric control element of heating and air conditioner in advance, calculation formula can root It is specifically limited according to actual conditions.
Specifically, when refrigeration, the aperture LA_cool_1 and outdoor environment temperature T4 and running frequency F of first throttle element Between relational expression be:LA_cool_1=a1·F+b1T4+c1, when the aperture LA_cool_1 of calculating is more than the first segment of acquisition When the practical aperture of fluid element, the aperture of first throttle element is increased into calculating aperture;Otherwise it turns down.
Relational expression between the aperture LA_cool_2 and outdoor environment temperature T4 and running frequency F of second restricting element is: LA_cool_2=a2·F+b2T4+c2, when the aperture LA_cool_2 of calculating is more than the practical aperture of the second restricting element of acquisition When, the aperture of the second restricting element is increased into calculating aperture;Otherwise it turns down.Wherein, 0≤a1≤ 20,0≤b1≤ 20, -50≤ c1≤100;0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤ 150 control coefrficient a, b, c can be 0, and when any of which, one is When number is zero, it was demonstrated that the corresponding parameter of the coefficient is on restricting element aperture without influence.
When heating, the pass between the aperture LA_heat_1 and outdoor environment temperature T4 and running frequency F of the second restricting element It is that formula is:LA_heat_1=x1·F+y1T4+z1, when the aperture LA_heat_1 of calculating is more than the second restricting element of acquisition When practical aperture, the aperture of the second restricting element is increased into calculating aperture;Otherwise it turns down.
Relational expression between the aperture LA_heat_2 and outdoor environment temperature T4 and running frequency F of first throttle element is: LA_heat_2=x2·F+y2T4+z2, when the aperture LA_heat_2 of calculating is more than the practical aperture of the first throttle element of acquisition When, the aperture of first throttle element is increased into calculating aperture;Otherwise it turns down.Wherein, 0≤x1≤ 15,0≤y1≤ 15, -50≤ z1≤100;0≤x2≤ 25,0≤y2≤ 25, -50≤z2≤ 150 control coefrficient x, y, z can be 0, and when any of which, one is When number is zero, it was demonstrated that the corresponding parameter of the coefficient is on restricting element aperture without influence.
Such as in refrigeration, detects that outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz, set a1=1, b1=1.6, c1=6;a2=1.5, b2=1.6, c2=17.System calculates first according to collected frequency and T4 values first The aperture of restricting element should be 120, adjust the aperture of first throttle element to 120;Then the second restricting element is calculated Aperture is 160, adjusts the aperture of the second restricting element to 160.After the aperture 200s for maintaining two restricting elements, detection again is pressed Contracting machine running frequency and T4 values;Or the adjustment according to user to air-conditioning, compressor operating frequency and T4 values are detected, to first segment Fluid element and the second restricting element are readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
In heating, detects that outdoor environment temperature is 7 DEG C, compressor operating frequency 72Hz, set x1=2.0, y1= 3.0,z1=22.0;x2=1, y2=3.0, z2=7.0.System calculates the second section according to collected frequency and T4 values first The aperture of fluid element should be 187, adjust the aperture of the second restricting element to 187;Then opening for first throttle element is calculated Degree is 100, adjusts the aperture of first throttle element to 100.After the aperture 200s for maintaining two restricting elements, detection compression again Machine running frequency and T4 values, or the adjustment according to user to air-conditioning detect compressor operating frequency and T4 values, to first throttle Element and the second restricting element are readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 2:
In this embodiment, the first detection object is outdoor environment temperature T4 and running frequency F, first according to outdoor environment The setting aperture of level-one restricting element is calculated in temperature T4 and running frequency F, then according to setting aperture adjustment level-one throttling The aperture of element;
Second detection object is outdoor environment temperature T4, running frequency F and pressure at expulsion;Or second detection object be room External environment temperature T4, running frequency F and delivery temperature, are calculated and set according to outdoor environment temperature T4 and running frequency F first Determine pressure at expulsion and either sets delivery temperature then according to the actually detected pressure at expulsion arrived or delivery temperature adjustment two level section The aperture of fluid element so that the pressure at expulsion detected either delivery temperature reaches setting pressure at expulsion or setting exhaust temperature Degree.
Specifically, when refrigeration, the aperture LA_cool_1 and outdoor environment temperature T4 and running frequency F of first throttle element Between relational expression be:LA_cool_1=a1·F+b1T4+c1, when the aperture LA_cool_1 of calculating is more than the first segment of acquisition When the practical aperture of fluid element, the aperture of first throttle element is increased into calculating aperture;Otherwise it turns down.
When the second detection object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it Between relational expression be:TP_cool=a2·F+b2T4+c2, when the second detection object includes pressure at expulsion, pressure at expulsion P row with Relational expression between outdoor environment temperature T4 and running frequency F is:P rows _ cool=a3·F+b3T4+c3, when collected exhaust Either pressure at expulsion opens opening for big second restricting element to temperature more than the setting delivery temperature calculated or when setting pressure at expulsion Degree;Otherwise it turns down.Wherein 0≤a1≤ 20,0≤b1≤ 20, -50≤c1≤ 100,0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤ 150,0≤a3≤ 30,0≤b3≤ 30, -50≤c3≤150.Control coefrficient a, b, c can be 0, when one coefficient of any of which is When zero, it was demonstrated that the corresponding parameter of the coefficient is on restricting element aperture without influence.
When heating, the pass between the aperture LA_heat_1 and outdoor environment temperature T4 and running frequency F of the second restricting element It is that formula is:LA_heat_1=x1·F+y1T4+z1, when the aperture LA_heat_1 of calculating is more than the second restricting element of acquisition When practical aperture, the aperture increase of the second restricting element is calculated into aperture;Otherwise it turns down.
When the second detection object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it Between relational expression be:TP_heat=x2·F+y2T4+z2, when the second detection object includes pressure at expulsion, pressure at expulsion P row with Relational expression between outdoor environment temperature T4 and running frequency F is:P rows _ heat=x3·F+y3T4+z3, when collected exhaust Either pressure at expulsion opens opening for big first throttle element to temperature more than the setting delivery temperature calculated or when setting pressure at expulsion Degree;Otherwise it turns down.Wherein 0≤x1≤ 15,0≤y1≤ 15, -50≤z1≤ 100,0≤x2≤ 25,0≤y2≤ 25, -50≤z2≤ 150,0≤x3≤ 25,0≤y3≤ 25, -50≤z3≤150.Control coefrficient x, y, z can be 0, when one coefficient of any of which is When zero, it was demonstrated that the corresponding parameter of the coefficient is on restricting element aperture without influence.
Such as in refrigeration, detects that outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz, set a1=1, b1=1.6, c1=6;a2=0.5, b2=0.4, c2=31;a3=0.25, b3=0.2, c2=3.9.System first is according to collecting Frequency and T4 values, calculate first throttle element aperture should be 120, adjust first throttle element aperture to 120, so System is according to the frequency and T4 values used afterwards, calculate the corresponding delivery temperature TP_cool of the second restricting element be 74 DEG C or Person's pressure at expulsion P rows _ cool is 2.54MPa, at this moment teases and ridicule whole second according to the delivery temperature TP or pressure at expulsion P that detect The aperture of restricting element, when the delivery temperature detected is more than 74 DEG C (or the pressure at expulsion P rows detected are more than 2.54Mpa) When, gradually increase the aperture (action of 4 steps can be adjusted by each) of the second restricting element.Maintain the aperture 200s of two restricting elements Afterwards, detect compressor operating frequency and T4 values, or the adjustment according to user to air-conditioning again, detection compressor operating frequency and T4 values readjust first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
When heating, when detecting that outdoor environment temperature is 7 DEG C, compressor operating frequency 72Hz sets x1=2.0, y1= 3.0,z1=22.0;x2=0.5, y2=0.4, z2=30;x3=0.25, y3=0.2, z3=5.System is according to collected first Frequency and T4 values, the aperture for calculating the second restricting element should be 187, adjust the aperture of the second restricting element to 187, then System is according to the frequency and T4 values used, and it is 68.8 DEG C to calculate the corresponding delivery temperature TP_heat of first throttle element, row Atmospheric pressure P rows _ heat is 2.44MPa.At this moment according to the delivery temperature TP or pressure at expulsion P adjustment first throttle members detected The aperture of part, when the delivery temperature detected is more than 68.8 DEG C (or the pressure at expulsion P rows detected are more than 2.44Mpa), The aperture (action of 4 steps can be adjusted by each) of first throttle element is gradually increased, otherwise is gradually reduced opening for first throttle element Degree.After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 values are detected again, or according to user to sky The adjustment of tune detects compressor operating frequency and T4 values, is readjusted to first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 3:
In this embodiment, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to different restricting elements Aperture, first detection object be outdoor environment temperature T4, the outdoor where the actually detected outdoor environment temperature T4 arrived The aperture of the corresponding opening value adjustment level-one restricting element of temperature range;
Second detection object is outdoor environment temperature T4, running frequency F and pressure at expulsion;Or second detection object be room External environment temperature T4, running frequency F and delivery temperature, are calculated and set according to outdoor environment temperature T4 and running frequency F first Determine pressure at expulsion and either set delivery temperature and adjust two-step throttle to pressure at expulsion or delivery temperature according to actually detected The aperture of element is so that detect that pressure at expulsion or delivery temperature reach setting pressure at expulsion or setting delivery temperature.
Specifically, when refrigeration, the concrete condition of the aperture of the corresponding first throttle element in different outdoor temperature sections is such as Following table:
T4 Aperture
10≤T4 < 20 100
20≤T4 < 30 110
30≤T4 < 40 120
40≤T4 < 50 150
50≤T4 < 60 180
When the second detection object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it Between relational expression be:TP_cool=a1·F+b1T4+c1, when the second detection object includes pressure at expulsion, pressure at expulsion P row with Relational expression between outdoor environment temperature T4 and running frequency F is:P rows _ cool=a2·F+b2T4+c2, when collected exhaust Either pressure at expulsion opens opening for big second restricting element to temperature more than the setting delivery temperature calculated or when setting pressure at expulsion Degree;Otherwise it turns down.Wherein 0≤a1≤ 20,0≤b1≤ 20, -50≤c1≤ 100,0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤ 150.Control coefrficient a, b, c can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter of the coefficient is to throttling Element aperture is without influence.
When heating, the concrete condition such as following table of the aperture of corresponding second restricting element in different outdoor temperature sections:
When the second detection object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it Between relational expression be:TP_heat=x1·F+y1T4+z1, when the second detection object includes pressure at expulsion, pressure at expulsion P row with Relational expression between outdoor environment temperature T4 and running frequency F is:P rows _ heat=x2·F+y2T4+z2, when collected exhaust Either pressure at expulsion opens opening for big first throttle element to temperature more than the setting delivery temperature calculated or when setting pressure at expulsion Degree;Otherwise it turns down.Wherein 0≤x1≤ 25,0≤y1≤ 25, -50≤z1≤ 150,0≤x2≤ 25,0≤y2≤ 25, -50≤z2≤ 150.Control coefrficient x, y, z can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter of the coefficient is to throttling Element aperture is without influence.
For example, detection outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz when refrigeration, a is set1=0.5, b1 =0.4, c1=31;a2=0.25, b2=0.2, c2=3.9.System first obtains according to outdoor environment temperature T4 is collected The aperture of one restricting element should be 120, adjust the aperture of first throttle element to 120;Then system is according to frequency and T4 values, Calculate that the corresponding delivery temperature TP_cool of the second restricting element is 74 DEG C or pressure at expulsion P rows _ cool is 2.54MPa, this When the aperture of the second restricting element is adjusted according to the delivery temperature TP that detects or pressure at expulsion P, such as the row detected When temperature degree is more than 74 DEG C (or the pressure at expulsion P rows detected are more than 2.54Mpa), opening for the second restricting element is gradually increased Degree (can adjust the action of 4 steps) by each.Maintain two restricting elements aperture 200s after, again detect compressor operating frequency and T4 values, or the adjustment according to user to air-conditioning detect compressor operating frequency and T4 values, are saved to first throttle element and second Fluid element is readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
When heating, detects that outdoor environment temperature is 7 DEG C, compressor operating frequency 72Hz, set x1=0.5, y1= 0.4,z1=30;x2=0.25, y2=2, z2=5.System obtains the second section according to collected outdoor environment temperature T4 first The aperture of fluid element should be 180, adjust the aperture of the second restricting element to 180;Then system according to the frequency that uses and T4 values, it is 68.8 DEG C to calculate the corresponding delivery temperature TP_heat of first throttle element, and pressure at expulsion P rows _ heat is 3.7MPa.At this moment according to the aperture of the delivery temperature TP that detects or pressure at expulsion P adjustment first throttle elements, when detecting Delivery temperature when being more than 68.8 DEG C (or the pressure at expulsion P row detected is more than 3.7Mpa), gradually increase first throttle member The aperture (action of 4 steps can be adjusted by each) of part, on the contrary it is gradually reduced the aperture of first throttle element.Maintain two restricting elements Aperture 200s after, detect compressor operating frequency and T4 values, or the adjustment according to user to air-conditioning again, detect compressor Running frequency and T4 values, readjust first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 4:
In this embodiment, presetting medium temperature, either intermediate pressure first detects object as intermediate pressure or centre Temperature, according to it is actually detected to intermediate pressure or medium temperature adjust the aperture of level-one restricting element so that detecting Either medium temperature reaches default intermediate pressure or default medium temperature to intermediate pressure.
Second detection object is outdoor environment temperature T4, running frequency F and pressure at expulsion;Or second detection object be room External environment temperature T4, running frequency F and delivery temperature, are calculated and set according to outdoor environment temperature T4 and running frequency F first Determine pressure at expulsion and either set delivery temperature and adjust two-step throttle to pressure at expulsion or delivery temperature according to actually detected The aperture of element is so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or setting delivery temperature.
Specifically, when refrigeration, the interval of preset medium temperature can be 20 DEG C -35 DEG C, preset intermediate pressure Interval can be 0.8MPa-2.0MPa.When detecting that intermediate pressure or medium temperature are less than setting value, open big by the The aperture of one restricting element, on the contrary it turns down.
When the second detection object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it Between relational expression be:TP_cool=a1·F+b1T4+c1, when the second detection object includes pressure at expulsion, pressure at expulsion P row with Relational expression between outdoor environment temperature T4 and running frequency F is:P rows _ cool=a2·F+b2T4+c2, when collected exhaust Either pressure at expulsion opens opening for big second restricting element to temperature more than the setting delivery temperature calculated or when setting pressure at expulsion Degree;Otherwise it turns down.Wherein 0≤a1≤ 20,0≤b1≤ 20, -50≤c1≤ 100,0≤a2≤ 30,0≤b2≤ 30, -50≤c2≤ 150.Control coefrficient a, b, c can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter of the coefficient is to throttling Element aperture is without influence.
When heating, the interval of preset medium temperature can be 20 DEG C -30 DEG C, the value area of preset intermediate pressure Between can be 1.0MPa-2.5MPa.When detecting that intermediate pressure or medium temperature are higher than setting value, big second throttling member is opened The aperture of part, on the contrary it turns down.
When the second detection object includes delivery temperature, delivery temperature TP and outdoor environment temperature T4 and running frequency F it Between relational expression be:TP_heat=x1·F+y1T4+z1, when the second detection object includes pressure at expulsion, pressure at expulsion P row with Relational expression between outdoor environment temperature T4 and running frequency F is:P rows _ heat=x2·F+y2T4+z2, when collected exhaust Either pressure at expulsion opens opening for big first throttle element to temperature more than the setting delivery temperature calculated or when setting pressure at expulsion Degree;Otherwise it turns down.Wherein 0≤x1≤ 25,0≤y1≤ 25, -50≤z1≤ 150,0≤x2≤ 25,0≤y2≤ 25, -50≤z2≤ 150.Control coefrficient x, y, z can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter of the coefficient is to throttling Element aperture is without influence.
Such as when freezing, medium temperature is set as 26 DEG C or sets intermediate pressure 1.65MPa, detects outdoor environment temperature Degree is 35 DEG C, compressor operating frequency 58Hz, sets a1=0.5, b1=0.4, c1=31;a2=0.25, b2=0.2, c2= 3.9.First, system adjusts the aperture of first throttle element according to collected medium temperature or intermediate pressure value.Work as acquisition The medium temperature arrived gradually turns down first throttle element more than 26 DEG C or when collected intermediate pressure is more than 1.65MPa Aperture (can adjust the action of 4 steps) by each.Otherwise turn aperture down.Then system calculates the second throttling according to frequency and T4 values The corresponding delivery temperature TP_cool of element is 74 DEG C or pressure at expulsion P rows _ cool is 2.54MPa, and at this moment basis detects Delivery temperature TP either pressure at expulsion P adjust the second restricting element aperture when detect delivery temperature be more than 74 DEG C (or inspection The pressure P rows measured are more than 2.54Mpa) when, gradually increase the aperture (action of 4 steps can be adjusted by each) of the second restricting element. After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 values are detected again, or according to user to air-conditioning Adjustment, detect compressor operating frequency and T4 values, first throttle element and the second restricting element readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
When heating, medium temperature is set as 26 DEG C, intermediate pressure 1.6MPa, detects that outdoor environment temperature is 7 DEG C, compression Machine running frequency is 72Hz, sets x1=0.5, y1=0.4, z1=30;x2=0.25, y2=2, z2=5.System first is according to adopting The medium temperature or intermediate pressure value collected adjusts the aperture of the second restricting element.When collected medium temperature is more than 26 DEG C Or collected intermediate pressure is when being more than 1.6MPa, the aperture for gradually increasing the second restricting element (can to adjust 4 steps dynamic by each Make).Otherwise turn aperture down.Then system calculates the corresponding exhaust of first throttle element according to the frequency and T4 values that detect Temperature TP_heat is 68.8 DEG C, and pressure at expulsion P rows _ heat is 3.7MPa.At this moment according to the delivery temperature TP or row detected The aperture of atmospheric pressure P adjustment first throttle element, when the delivery temperature detected is more than 68.8 DEG C of (or exhaust pressures detected Power P rows are more than 3.7Mpa) when, the aperture (action of 4 steps can be adjusted by each) of first throttle element is gradually increased, otherwise is gradually subtracted The aperture of small first throttle element.After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 are detected again Value, or the adjustment according to user to air-conditioning detect compressor operating frequency and T4 values, throttle to first throttle element and second Element is readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 5:
In this embodiment, presetting medium temperature, either intermediate pressure first detects object as intermediate pressure or centre Temperature, according to it is actually detected to intermediate pressure or medium temperature adjust the aperture of level-one restricting element so that detecting Either medium temperature reaches default intermediate pressure or default medium temperature to intermediate pressure;
Second detection object is outdoor environment temperature T4 and running frequency F, first according to outdoor environment temperature T4 and operation The setting aperture of two-step throttle element is calculated in frequency F, and the aperture of two-step throttle element is then adjusted according to setting aperture.
Specifically, the interval of preset medium temperature can be 20 DEG C -35 DEG C when refrigeration, preset intermediate pressure Interval can be 0.8MPa-1.5MPa.When detecting that intermediate pressure or temperature are less than setting value, big first throttle is opened The aperture of element, on the contrary it turns down.
Relational expression between the aperture LA_cool_2 and outdoor environment temperature T4 and running frequency F of second restricting element is: LA_cool_2=a2·F+b2T4+c2, when the aperture LA_cool_2 of calculating is more than the practical aperture of the second restricting element of acquisition When, the aperture of the second restricting element is increased into calculating aperture;Otherwise it turns down.Wherein, 0≤a2≤ 30,0≤b2≤ 30, -50≤ c2≤ 150, control coefrficient a, b, c can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter pair of the coefficient Restricting element aperture is without influence.
When heating, the interval of preset medium temperature can be 20 DEG C -30 DEG C, the value area of preset intermediate pressure Between can be 1.0MPa-2.5MPa.When detecting that intermediate pressure or temperature are higher than setting value, big second restricting element is opened Aperture, on the contrary it turns down.
Relational expression between the aperture LA_heat_2 and outdoor environment temperature T4 and running frequency F of first throttle element is: LA_heat_2=x2·F+y2T4+z2, when the aperture LA_heat_2 of calculating is more than the practical aperture of the first throttle element of acquisition When, the aperture of first throttle element is increased into calculating aperture;Otherwise it turns down.Wherein, 0≤x2≤ 25,0≤y2≤ 25, -50 ≤z2≤ 150, control coefrficient x, y, z can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter of the coefficient On restricting element aperture without influence.
Such as when freezing, medium temperature is set as 26 DEG C or sets intermediate pressure 1.65MPa, detects outdoor environment temperature Degree is 35 DEG C, compressor operating frequency 58Hz, sets a2=1.5, b2=1.6, c2=17.First, system is according to collected The aperture of medium temperature or intermediate pressure value adjustment first throttle element.When collected medium temperature is more than 26 DEG C or adopts When the intermediate pressure collected is more than 1.65MPa, the aperture (action of 4 steps can be adjusted by each) of first throttle element is gradually turned down. Otherwise turn aperture down.Then system is according to detecting that outdoor environment temperature and compressor operating frequency calculate the second restricting element Set aperture as 160, then adjust the aperture of the second restricting element to 160.After the aperture 200s for maintaining two restricting elements, Again compressor operating frequency and T4 values, or the adjustment according to user to air-conditioning are detected, compressor operating frequency and T4 are detected Value, readjusts first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
When heating, medium temperature is set as 26 DEG C, intermediate pressure 1.6MPa, detects that outdoor environment temperature is 7 DEG C, compression Machine running frequency is 72Hz, sets x2=1, y2=3.0, z2=7.0.First system according to collected medium temperature or in Between pressure value adjust the second restricting element aperture.When the intermediate pressure that the medium temperature detected is more than 26 DEG C or detects When more than 1.6MPa, the aperture (action of 4 steps can be adjusted by each) of the second restricting element is gradually increased.Otherwise turn aperture down.So The aperture that first throttle element is calculated afterwards is 100, adjusts the aperture of first throttle element to 100.Maintain two throttling members After the aperture 200s of part, compressor operating frequency and T4 values, or the adjustment according to user to air-conditioning, detection compression are detected again Machine running frequency and T4 values, readjust first throttle element and the second restricting element.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
Embodiment 6:
In this embodiment, multiple outdoor temperature sections are preset, each outdoor temperature section corresponds to different restricting elements Aperture, first detection object be outdoor environment temperature T4, the outdoor where the actually detected outdoor environment temperature T4 arrived The aperture of the corresponding opening value adjustment level-one restricting element of temperature range.
Second detection object is outdoor environment temperature T4 and running frequency F, first according to outdoor environment temperature T4 and operation The setting aperture of two-step throttle element is calculated in frequency F, and the aperture of two-step throttle element is then adjusted according to setting aperture.
Specifically, when refrigeration, the concrete condition of the aperture of the corresponding first throttle element in different outdoor temperature sections is such as Following table:
T4 Aperture
10≤T4 < 20 100
20≤T4 < 30 110
30≤T4 < 40 120
40≤T4 < 50 150
50≤T4 < 60 180
Relational expression between the aperture LA_cool_2 and outdoor environment temperature T4 and running frequency F of second restricting element is: LA_cool_2=a2·F+b2T4+c2, when the aperture LA_cool_2 of calculating is more than the practical aperture of the second restricting element of acquisition When, the aperture of the second restricting element is increased into calculating aperture;Otherwise it turns down.Wherein, 0≤a2≤ 30,0≤b2≤ 30, -50≤ c2≤ 150, control coefrficient a, b, c can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter pair of the coefficient Restricting element aperture is without influence.
When heating, the concrete condition such as following table of the aperture of corresponding second restricting element in different outdoor temperature sections:
T4 Aperture
10≤T4 < 20 160
5≤T4 < 10 180
- 5≤T4 < 5 200
- 10≤T4 < -5 250
- 15≤T4 < -10 300
Relational expression between the aperture LA_heat_2 and outdoor environment temperature T4 and running frequency F of first throttle element is: LA_heat_2=x2·F+y2T4+z2, when the aperture LA_heat_2 of calculating is more than the practical aperture of the first throttle element of acquisition When, the aperture of first throttle element is increased into calculating aperture;Otherwise it turns down.Wherein, 0≤x2≤ 25,0≤y2≤ 25, -50≤ z2≤ 150, control coefrficient x, y, z can be 0, when one coefficient of any of which is zero, it was demonstrated that the corresponding parameter pair of the coefficient Restricting element aperture is without influence.
For example, when refrigeration, detects that outdoor environment temperature is 35 DEG C, compressor operating frequency 58Hz, set a2= 1.5,b2=1.6, c2=17.First, system obtains opening for first throttle element according to outdoor environment temperature T4 is collected first Degree should be 120, adjust the aperture of first throttle element to 120.Then system is according to detecting outdoor environment temperature and compression What machine running frequency calculated the second restricting element sets aperture as 160, then adjusts the aperture of the second restricting element to 160. After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 values are detected again, or according to user to air-conditioning Adjustment, detect compressor operating frequency and T4 values, first throttle element and the second restricting element readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
When heating, detects that outdoor environment temperature is 7 DEG C, compressor operating frequency 72Hz, set x2=1, y2=3.0, z2=7.0.System first show that the aperture of the second restricting element should be 180, adjusts according to collected outdoor environment temperature T4 The aperture of whole second restricting element is to 180;Then the aperture that first throttle element is calculated is 100, adjustment first throttle member The aperture of part is to 100.After the aperture 200s for maintaining two restricting elements, compressor operating frequency and T4 values are detected again, or Adjustment according to user to air-conditioning detects compressor operating frequency and T4 values, to first throttle element and the second restricting element into Row is readjusted.
According to this adjustment mode, equivalent specifications air conditioner, efficiency are high by 6.5% currently on the market for air conditioner Energy Efficiency Ratio.
It is understood that the specific example explanation that above-mentioned six embodiments are merely given as, the control of the embodiment of the present invention Method is not limited to above-mentioned six kinds, such as can be by the tune of the aperture of level-one restricting element and two-step throttle element in six kinds of examples Section mode carries out random combine;Or the compressor operating frequency in above-described embodiment can also by it is actually detected to outdoor ring Border temperature obtains, such as presets multiple outdoor environment temperature sections, and multiple outdoor environment temperature sections correspond to different compressors Running frequency.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (10)

1. a kind of control method of heating and air conditioner, which is characterized in that the heating and air conditioner includes:
Duplex cylinder compressor, the duplex cylinder compressor include shell, the first cylinder, the second cylinder and the first liquid storage device, the shell It is equipped with exhaust outlet, first cylinder and second cylinder are respectively provided in the shell, and first liquid storage device is located at Outside the shell, the air entry of first cylinder is connected to first liquid storage device, second cylinder and first gas The value range of the delivery space ratio of cylinder is 1%~10%;
Commutate component, and the commutation component includes the first valve port to the 4th valve port, first valve port and the second valve port and third It being connected to one of in valve port, the 4th valve port is connected to another in second valve port and the third valve port, First valve port is connected with the exhaust outlet, and the 4th valve port is connected with first liquid storage device;
Outdoor heat exchanger and indoor heat exchanger, the first end of the outdoor heat exchanger are connected with second valve port, the interior The first end of heat exchanger is connected with the third valve port;
Gas-liquid separator, the gas-liquid separator include gas vent, first interface and second interface, the gas vent and institute The air entry for stating the second cylinder is connected, and the first interface is connected with the second end of the outdoor heat exchanger, the second interface It is connected with the second end of the indoor heat exchanger, it is adjustable to be in series with aperture between the first interface and the outdoor heat exchanger First throttle element is in series with adjustable second restricting element of aperture between the second interface and the indoor heat exchanger;
When heating and air conditioner is run, the restricting element of upstream is located in the first throttle element and second restricting element For level-one restricting element, the restricting element that downstream is located in the first throttle element and second restricting element is two level section Fluid element;
The control method includes the following steps:The level-one is adjusted according to the testing result to the first detection object first to throttle Then the aperture of element adjusts opening for the two-step throttle element to aperture is set according to the testing result to the second detection object Degree to setting aperture, the setting aperture of the level-one restricting element less than the two-step throttle element setting aperture, described the The testing result of one detection object is different from the second detection testing result of object;
The wherein described first detection object includes the exhaust temperature of outdoor environment temperature, the running frequency of duplex cylinder compressor, exhaust outlet Degree, exhaust outlet pressure at expulsion, from the gas vent be discharged refrigerant intermediate pressure, from the gas vent be discharged it is cold At least one of medium temperature of matchmaker;
The second detection object includes outdoor environment temperature, the running frequency of duplex cylinder compressor, the delivery temperature of exhaust outlet, row The pressure at expulsion of gas port, the intermediate pressure for the refrigerant being discharged from the gas vent, the refrigerant that is discharged from the gas vent At least one of medium temperature.
2. the control method of heating and air conditioner according to claim 1, which is characterized in that the first throttle element is Electric expansion valve, second restricting element are electric expansion valve.
3. the control method of heating and air conditioner according to claim 1, which is characterized in that the gas vent and described It is in series with solenoid valve between the air entry of second cylinder.
4. the control method of heating and air conditioner according to claim 1, which is characterized in that the appearance of the gas-liquid separator Long-pending value range is 100mL-500mL.
5. the control method of heating and air conditioner according to claim 1, which is characterized in that it is described first detection object and The second detection object is outdoor environment temperature T4 and running frequency F, according to the outdoor environment temperature T4 detected The setting aperture of level-one restricting element and two-step throttle element is calculated with running frequency F, then according to setting aperture adjustment The aperture of corresponding level-one restricting element and two-step throttle element.
6. the control method of heating and air conditioner according to claim 1, which is characterized in that described first, which detects object, is Outdoor environment temperature T4 and running frequency F is calculated one according to the outdoor environment temperature T4 and the running frequency F first Then the setting aperture of grade restricting element adjusts the aperture of the level-one restricting element according to setting aperture;
The second detection object is outdoor environment temperature T4, running frequency F and pressure at expulsion;Or the second detection object For outdoor environment temperature T4, running frequency F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency F is calculated setting pressure at expulsion and either sets delivery temperature then according to the actually detected pressure at expulsion arrived or exhaust temperature Degree adjustment two-step throttle element aperture so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or Set delivery temperature.
7. the control method of heating and air conditioner according to claim 1, which is characterized in that preset multiple outdoor temperature areas Between, each outdoor temperature section corresponds to the aperture of different restricting elements,
First detection object is outdoor environment temperature T4, the outdoor temperature where the actually detected outdoor environment temperature T4 arrived The aperture of the corresponding opening value adjustment level-one restricting element in section;
The second detection object is outdoor environment temperature T4, running frequency F and pressure at expulsion;Or the second detection object For outdoor environment temperature T4, running frequency F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency F is calculated setting pressure at expulsion and either sets delivery temperature then according to the actually detected pressure at expulsion arrived or exhaust temperature Degree adjustment two-step throttle element aperture so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or Set delivery temperature.
8. the control method of heating and air conditioner according to claim 1, which is characterized in that default medium temperature is pre- If intermediate pressure, the first detection object is intermediate pressure or medium temperature, according to the actually detected intermediate pressure arrived or During the aperture of person's medium temperature adjustment level-one restricting element is so that the intermediate pressure or medium temperature that detect reach default Between pressure or default medium temperature;
The second detection object is outdoor environment temperature T4, running frequency F and pressure at expulsion;Or the second detection object For outdoor environment temperature T4, running frequency F and delivery temperature, first according to the outdoor environment temperature T4 and the running frequency F is calculated setting pressure at expulsion and either sets delivery temperature then according to the actually detected pressure at expulsion arrived or exhaust temperature Degree adjustment two-step throttle element aperture so that the pressure at expulsion or delivery temperature that detect reach setting pressure at expulsion or Set delivery temperature.
9. the control method of heating and air conditioner according to claim 1, which is characterized in that default medium temperature is pre- If intermediate pressure, the first detection object is intermediate pressure or medium temperature, according to the actually detected intermediate pressure arrived or During the aperture of person's medium temperature adjustment level-one restricting element is so that the intermediate pressure or medium temperature that detect reach default Between pressure or default medium temperature;
The second detection object is outdoor environment temperature T4 and running frequency F, first according to the outdoor environment temperature T4 and The setting aperture of two-step throttle element is calculated in the running frequency F, then adjusts the two-step throttle according to setting aperture The aperture of element.
10. the control method of heating and air conditioner according to claim 1, which is characterized in that preset multiple outdoor temperatures Section, each outdoor temperature section correspond to the aperture of different restricting elements,
First detection object is outdoor environment temperature T4, the outdoor temperature where the actually detected outdoor environment temperature T4 arrived The aperture of the corresponding opening value adjustment level-one restricting element in section;
The second detection object is outdoor environment temperature T4 and running frequency F, first according to the outdoor environment temperature T4 and The setting aperture of two-step throttle element is calculated in the running frequency F, then adjusts the two-step throttle according to setting aperture The aperture of element.
CN201610286964.6A 2016-04-29 2016-04-29 The control method of heating and air conditioner Active CN105928146B (en)

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CN108489164A (en) * 2018-03-30 2018-09-04 北京新能源汽车股份有限公司 Control method, device and the electronic equipment of electric expansion valve

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