CN106225145A - The control method of outdoor machine of air-conditioner, outdoor machine of air-conditioner and air conditioning system - Google Patents

The control method of outdoor machine of air-conditioner, outdoor machine of air-conditioner and air conditioning system Download PDF

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Publication number
CN106225145A
CN106225145A CN201610584183.5A CN201610584183A CN106225145A CN 106225145 A CN106225145 A CN 106225145A CN 201610584183 A CN201610584183 A CN 201610584183A CN 106225145 A CN106225145 A CN 106225145A
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China
Prior art keywords
air
conditioner
outdoor machine
low
expansion valve
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CN201610584183.5A
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Chinese (zh)
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CN106225145B (en
Inventor
汪俊勇
胡知耀
熊俊峰
莫灼均
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses the control method of a kind of outdoor machine of air-conditioner, outdoor machine of air-conditioner and air conditioning system, the control method of outdoor machine of air-conditioner includes that refrigeration control method, refrigeration control method include step: detect indoor environment temperature TIn, air conditioning system low pressure PLow；According to Δ TInAnd TInDetermine the target low-pressure P of air conditioning system0；If PLow<P0, then the frequency of the compressor of outdoor machine of air-conditioner is reduced；If PLow=P0, then the frequency keeping compressor is constant；If PLow>P0, then the frequency of compressor is increased；Wherein, Δ TIn=TIn‑T0, T0The indoor temperature set for user.The control method of outdoor machine of air-conditioner that the present invention provides, the refrigerating capacity output of outdoor machine of air-conditioner independently controls by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine affects refrigeration control, improves the versatility of outdoor machine of air-conditioner；Meanwhile, also effectively reduce the type of outdoor machine of air-conditioner, reduce design cost and production management's cost of outdoor machine of air-conditioner.

Description

The control method of outdoor machine of air-conditioner, outdoor machine of air-conditioner and air conditioning system
Technical field
The present invention relates to air-conditioning technical field, more particularly, it relates to the control method of a kind of outdoor machine of air-conditioner, outdoor machine of air-conditioner And air conditioning system.
Background technology
At present, the outer machine of general air conditioning can only be arranged in pairs or groups the appointment air-conditioning internal machine of multi-form of same cold, the outer machine of general air conditioning Refrigeration need to refer to the cold of air-conditioning internal machine and be controlled, then the refrigeration control of outdoor machine of air-conditioner is by the shadow of air-conditioning internal machine Ring, cause an outdoor machine of air-conditioner can only arrange in pairs or groups fixing air-conditioning internal machine, then the versatility of this outdoor machine of air-conditioner is poor.
It addition, the heat being also required to reference to air-conditioning internal machine that heats of outdoor machine of air-conditioner is controlled, then the system of outdoor machine of air-conditioner Thermal control is affected by air-conditioning internal machine, also causes an outdoor machine of air-conditioner can only arrange in pairs or groups fixing air-conditioning internal machine so that this air-conditioning The versatility of outer machine is poor.
The fixing air-conditioning internal machine it addition, an outdoor machine of air-conditioner can only be arranged in pairs or groups so that the type of outdoor machine of air-conditioner is more, causes sky Adjust the design cost of outer machine, production management relatively costly.
In sum, how to control the refrigeration of outdoor machine of air-conditioner, to avoid being affected by air-conditioning internal machine, improve outside air-conditioning The versatility of machine, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
It is an object of the invention to provide the control method of a kind of outdoor machine of air-conditioner, to avoid being affected by air-conditioning internal machine, carry The versatility of high outdoor machine of air-conditioner.It is a further object of the present invention to provide a kind of outdoor machine of air-conditioner and air conditioning system.
To achieve these goals, the present invention provides following technical scheme:
A kind of control method of outdoor machine of air-conditioner, including refrigeration control method, described refrigeration control method includes step:
Detection indoor environment temperature TIn, air conditioning system low pressure PLow；
According to △ TInAnd TInDetermine the target low-pressure P of air conditioning system0；
If PLow<P0, then the frequency of the compressor of described outdoor machine of air-conditioner is reduced；If PLow=P0, then the frequency of described compressor is kept Rate is constant；If PLow>P0, then the frequency of described compressor is increased；
Wherein, △ TIn=TIn-T0, T0The indoor temperature set for user.
Preferably, △ TIn、TInAnd P0Relation be shown in Table shown in one:
Table one
△TIn＜ a1 a1≤△TIn＜ a2 a2≤△TIn＜ a3 …… an-1≤△TIn
TIn＜ b1 X11 X12 X13 …… X1n
b1≤TIn＜ b2 X21 X22 X23 …… X2n
b2≤TIn＜ b3 X31 X32 X33 …… X3n
…… …… …… …… …… ……
bn-1≤TIn Xn1 Xn2 Xn3 …… Xnn
In table one, n is natural number, and n >=2；X11∈ { 0.6MPa, 1.3MPa}, X1n∈ { 0.6MPa, 1.3MPa}, Xn1∈ { 0.6MPa, 1.3MPa}, Xnn∈ { 0.6MPa, 1.3MPa}；an-1∈ { 0 DEG C, 10 DEG C }, bn-1∈ { 12 DEG C, 35 DEG C }, anWith an-1 Difference range be 0.5 DEG C～10 DEG C, bnWith bn-1Difference range be 0.5 DEG C～10 DEG C.
Preferably, described refrigeration control method further comprises the steps of:
Refrigerant temperature T at detection air conditioning system low pressureLow；
According to PLow、TLowObtain suction superheat △ TInhale, as △ TInhale< when 2, reduce the electric expansion valve of described outdoor machine of air-conditioner Aperture.
Preferably, described refrigeration control method further comprises the steps of:
Detection outdoor environment temperature TOutward, delivery temperature T of described compressorRow；
As △ TInhaleWhen >=2, according to TIn、TOutwardDetermine target exhaust temperature T of described compressorMeshIf, TRow<TMesh, then institute is reduced State the aperture of the electric expansion valve of outdoor machine of air-conditioner；If TRow=TMesh, then the aperture keeping described electric expansion valve is constant；If TRow>TMesh, Then increase the aperture of described electric expansion valve.
Preferably, TIn、TOutwardAnd TMeshRelation be shown in Table shown in two:
Table two
In table two, n is natural number, and n >=2；C11∈ { 50 DEG C, 100 DEG C }, C1n∈ { 50 DEG C, 100 DEG C }, Cn1∈ 50 DEG C, 100 DEG C }, Cnn∈ { 50 DEG C, 100 DEG C }；An-1∈ { 12 DEG C, 35 DEG C }, Bn-1∈ { 30 DEG C, 55 DEG C }, AnWith An-1Difference range be 0.5 DEG C～10 DEG C, BnWith Bn-1Difference range be 0.5 DEG C～10 DEG C.
Preferably, the control method of above-mentioned outdoor machine of air-conditioner also includes that heat-production control method, described heat-production control method include Step:
Detect described indoor environment temperature TIn, air conditioning system high pressure PHigh；
According to TInDetermine the target high-pressure P of described air conditioning system0’；
If PHigh<P0', then reduce the frequency of the compressor of described outdoor machine of air-conditioner；If PHigh=P0', then keep described compressor Frequency is constant；If PHigh>P0', then increase the frequency of described compressor.
Preferably, TInAnd P0' relation be shown in Table and show shown in:
Table three
Indoor environment temperature Target high-pressure
TIn<D1 Y1
D1≤TIn＜ D2 Y2
D2≤TIn＜ D3 Y3
…… ……
Dn-1≤TIn Yn
In table three, n is natural number, and n >=2；Y1∈ { 2.0MPa, 3.8MPa}, Yn∈ { 2.0MPa, 3.8MPa}；Dn-1∈ { 12 DEG C, 35 DEG C }, DnWith Dn-1Difference range be 0.5 DEG C～10 DEG C.
Preferably, described heat-production control method further comprises the steps of:
If P1≤PHigh<P2, then forbid reducing the aperture of the electric expansion valve of outdoor machine of air-conditioner；
If PHigh≥P2, then the aperture of electric expansion valve is increased until PHigh=P3, and PHigh=P3Time stop increase electric expansion valve Aperture；
Wherein, P3<P1<P2, P1、P2And P3It is preset value.
Preferably, P is worked asHigh≥P2The aperture of electric expansion valve described in Shi Zeng great, particularly as follows: in preset time t1Interior by described The aperture of electric expansion valve increases E1Step；Wherein, t1It is not more than 60s, E1It is not more than 100B.
Preferably, described heat-production control method further comprises the steps of:
Detect delivery temperature T of described compressorRow,Outdoor environment temperature TOutward；
Work as PHigh<P3Time, according to TIn、TOutwardDetermine target exhaust temperature T of described compressorMeshIf, TRow<TMesh, then reduce described The aperture of the electric expansion valve of outdoor machine of air-conditioner；If TRow=TMesh, then the aperture keeping described electric expansion valve is constant；If TRow>TMesh, then Increase the aperture of described electric expansion valve.
Preferably, TIn、TOutwardAnd TMeshRelation be shown in Table shown in four:
Table four
In table four, n is natural number, and n >=2；H11∈ { 50 DEG C, 100 DEG C }, H1n∈ { 50 DEG C, 100 DEG C }, Hn1∈ 50 DEG C, 100 DEG C }, Hnn∈ { 50 DEG C, 100 DEG C }；En-1∈ { 12 DEG C, 35 DEG C }, Fn-1∈ { 30 DEG C, 55 DEG C }, EnWith En-1Difference range be 0.5 DEG C～10 DEG C, FnWith Fn-1Difference range be 0.5 DEG C～10 DEG C.
The control method of the outdoor machine of air-conditioner that the present invention provides, including refrigeration control method, this refrigeration control method is according to room The indoor temperature that interior ambient temperature and user set determines the target low-pressure of air conditioning system, low in the air conditioning system according to reality The magnitude relationship of pressure and target low-pressure regulates the frequency of compressor, it is ensured that air conditioning system low pressure is in the reasonable scope, then real Show the control to refrigerating capacity output, ensured that the refrigerating capacity output of compressor is suitable, it is ensured that the refrigeration of output Amount meets user's requirement.In the control method of the most above-mentioned outdoor machine of air-conditioner, refrigeration control method is according to indoor environment temperature, Yong Hushe Fixed indoor temperature and air conditioning system low pressure are controlled, then the refrigerating capacity output of outdoor machine of air-conditioner is independently controlled by outdoor machine of air-conditioner System, it is to avoid air-conditioning internal machine affects refrigeration control so that arbitrary form that outdoor machine of air-conditioner can be arranged in pairs or groups and the air-conditioning of any cold Interior machine, improves the versatility of outdoor machine of air-conditioner；Meanwhile, also effectively reduce the type of outdoor machine of air-conditioner, reduce outdoor machine of air-conditioner Design cost and production management's cost.
The control method of outdoor machine of air-conditioner based on above-mentioned offer, present invention also offers a kind of outdoor machine of air-conditioner, outside this air-conditioning Machine includes: compressor, cross valve and electric expansion valve；Wherein, the first interface of described cross valve be provided with for indoor heat exchange First connecting tube of device connection；Described outdoor machine of air-conditioner also includes:
Pressure transducer, be serially connected with described first connecting tube and in detecting described first connecting tube the pressure of coolant；
First temperature sensor, is used for detecting indoor environment temperature TIn；
First computing module, for according to △ TIn=TIn-T0Obtain △ TIn；
First data memory module, for storage by △ TInAnd TInThe target low-pressure P of the air conditioning system determined0；
First control module, when described outdoor machine of air-conditioner is in refrigeration mode, if PLow<P0, for controlling described compressor Frequency reduces；If PLow=P0, constant for controlling the frequency of described compressor；If PLow>P0, for controlling the frequency of described compressor Rate increases；
Wherein, T0The indoor temperature set for user, PLowFor air conditioning system low pressure, and PLowIt is in system for described outdoor machine of air-conditioner The detected value of described pressure transducer during chill formula.
Preferably, above-mentioned outdoor machine of air-conditioner also includes:
Second temperature sensor, is serially connected with described first connecting tube and the coolant temperature in detecting described first connecting tube Degree；
Second computing module, for according to PLow、TLowObtain suction superheat △ TInhale；
Second control module, described outdoor machine of air-conditioner is in refrigeration mode and as △ TInhale< when 2, it is used for controlling described electronics swollen The aperture of swollen valve reduces；
Wherein, TLowFor the refrigerant temperature T at the low pressure of described air conditioning systemLow, and TLowIt is in refrigeration for described outdoor machine of air-conditioner The detected value of the second temperature sensor described in during pattern.
Preferably, above-mentioned outdoor machine of air-conditioner also includes:
Three-temperature sensor, is used for detecting outdoor environment temperature TOutward；
4th temperature sensor, for detecting delivery temperature T of described compressorRow；
Second data memory module, for storage by TIn、TOutwardDetermine target exhaust temperature T of described compressorMesh；
3rd control module, described outdoor machine of air-conditioner is in refrigeration mode and △ TInhaleWhen >=2, if TRow<TMesh, it is used for controlling described The aperture of electric expansion valve reduces；If TRow=TMesh, constant for controlling the aperture of described electric expansion valve；If TRow>TMesh, it is used for controlling The aperture making described electric expansion valve increases.
Preferably, above-mentioned outdoor machine of air-conditioner also includes:
3rd data memory module, for storage by TInDetermine the target high-pressure P of described air conditioning system0’；
4th control module, when described outdoor machine of air-conditioner is in heating mode, if PHigh<P0', for controlling described compressor Frequency reduces；If PHigh=P0', constant for controlling the frequency of described compressor；If PHigh>P0', for controlling described compressor Frequency increases；
Wherein, PHighFor air conditioning system high pressure, and PHighDescribed pressure transducer when being in heating mode for described outdoor machine of air-conditioner Detected value.
Preferably, above-mentioned outdoor machine of air-conditioner also includes:
5th control module, when described outdoor machine of air-conditioner is in heating mode, if P1≤PHigh<P2, it is used for controlling described electronics swollen The aperture of swollen valve forbids reducing；If PHigh≥P2, increase until P for controlling the aperture of described electric expansion valveHigh=P3, and PHigh= P3Time control described electric expansion valve aperture stop increase；
Wherein, P3<P1<P2, P1、P2And P3It is preset value.
Preferably, described control module is when the aperture controlling described electric expansion valve increases, in preset time t1In Described control module controls the aperture of described electric expansion valve and increases E1Step；Wherein, t1It is not more than 60s, E1It is not more than 100B.
Preferably, above-mentioned outdoor machine of air-conditioner also includes:
Three-temperature sensor, is used for detecting outdoor environment temperature TOutward；
4th temperature sensor, for detecting delivery temperature T of described compressorRow；
4th data memory module, for storage by TIn、TOutwardTarget exhaust temperature T of the described compressor determinedMesh,
6th control module, works as PHigh<P3Time, if TRow<TMesh, reduce for controlling the aperture of described electric expansion valve；If TRow =TMesh, constant for controlling the aperture of described electric expansion valve；If TRow>TMesh, increase for controlling the aperture of described electric expansion valve Greatly.
Outdoor machine of air-conditioner based on above-mentioned offer, present invention also offers a kind of air conditioning system, and this air conditioning system includes air-conditioning Off-premises station, described air-conditioner outdoor unit is the air-conditioner outdoor unit described in above-mentioned any one.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to The accompanying drawing provided obtains other accompanying drawing.
The structural representation of the air conditioning system that Fig. 1 provides for the embodiment of the present invention.
In figure 1 above:
1 it is compressor, 2 is the 4th temperature sensor, 3 is outdoor heat exchanger, 4 is electric expansion valve, 5 is indoor heat exchange Device, 6 for cross valve, 7 be the second temperature sensor, 8 for pressure transducer, 9 be the first connecting tube, 10 for gas-liquid separator, 11 It is the first valve, 12 is the second valve.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.
The control method of the outdoor machine of air-conditioner that the embodiment of the present invention provides, including refrigeration control method, this refrigeration control method Including step:
S11) detection indoor environment temperature TIn, air conditioning system low pressure PLow:
It should be noted that outdoor machine of air-conditioner is when refrigeration mode, the position of air conditioning system low pressure is in connection cross valve and room In first connecting tube of interior heat exchanger, in the i.e. first connecting tube, the pressure of coolant is air conditioning system low pressure PLow.Indoor environment temperature Degree TIn, refer to outdoor machine of air-conditioner with the use of the temperature of environment at air-conditioning internal machine place.Specifically, examined by temperature sensor Survey indoor environment temperature, detect air conditioning system low pressure by pressure transducer.The embodiment of the present invention is to temperature sensor and pressure The type of sensor does not limits.
S12) according to △ TInAnd TInDetermine the target low-pressure P of air conditioning system0:
Wherein, △ TIn=TIn-T0, T0The indoor temperature set for user.Specifically, target low-pressure P0According to △ TInAnd TIn Numerical value carry out value.Target low-pressure is according to △ TInAnd TInGiving a preferable low voltage value out, target low-pressure is according to reality Border test case is revised and determines, is aggregated into a form after determining rationally, and during control, table look at obtains and △ TInAnd TInCorresponding target low pressure value.
Preferably, △ TIn、TInAnd P0Relation be shown in Table shown in one:
Table one
△TIn＜ a1 a1≤△TIn＜ a2 a2≤△TIn＜ a3 …… an-1≤△TIn
TIn＜ b1 X11 X12 X13 …… X1n
b1≤TIn＜ b2 X21 X22 X23 …… X2n
b2≤TIn＜ b3 X31 X32 X33 …… X3n
…… …… …… …… …… ……
bn-1≤TIn Xn1 Xn2 Xn3 …… Xnn
In table one, n is natural number, and n >=2；X11∈ { 0.6MPa, 1.3MPa}, X1n∈ { 0.6MPa, 1.3MPa}, Xn1∈ { 0.6MPa, 1.3MPa}, Xnn∈ { 0.6MPa, 1.3MPa}；an-1∈ { 0 DEG C, 10 DEG C }, bn-1∈ { 12 DEG C, 35 DEG C }, anWith an-1 Difference range be 0.5 DEG C～10 DEG C, bnWith bn-1Difference range be 0.5 DEG C～10 DEG C.
It is understood that in table one, string ellipsis can represent only one column data, it is possible to represent the number that two row are above According to；A line ellipsis can represent only data line, it is possible to represents the data of more than two row.Specifically, as n=2, then, table Having three row three row, in table one, the first row is followed successively by gauge outfit, △ TIn＜ a1、a1≤△TIn, in table one, the second row is followed successively by TIn＜ b1、 X11、X12, in table one, the third line is followed successively by b1≤TIn、X21、X22；As n=3, then table one only four row four row, in table one first Row is followed successively by gauge outfit, △ TIn＜ a1、a1≤△TIn＜ a2、a2≤△TIn, in table two, the second row is followed successively by TIn＜ b1、X11、X12、X13, In table two, the third line is followed successively by b1≤TIn＜ b2、X21、X22、X23；In table two, fourth line is followed successively by b2≤TIn、X31、X32、X33；Work as n When=4, then the table two only five row five elements, in table two, the first row is followed successively by gauge outfit, △ TIn＜ a1、a1≤△TIn＜ a2、a2≤△TIn ＜ a3、a3≤△TIn, in table two, the second row is followed successively by TIn＜ b1、X11、X12、X13、X14, in table two, the third line is followed successively by b1≤TIn＜ b2、X21、X22、X23、X24；In table two, fourth line is followed successively by b2≤TIn＜ b3、X31、X32、X33、X34；In table two, fifth line is followed successively by b3 ≤TIn、X41、X42、X43、X44；As n=5, then table two only six row six row, in table two, the first row is followed successively by gauge outfit, △ TIn＜ a1、a1≤△TIn＜ a2、a2≤△TIn＜ a3、a3≤△TIn＜ a4、a4≤△TIn, in table two, the second row is followed successively by TIn＜ b1、X11、 X12、X13、X14、X15, in table two, the third line is followed successively by b1≤TIn＜ b2、X21、X22、X23、X24、X25；In table two, fourth line is followed successively by b2≤TIn＜ b3、X31、X32、X33、X34、X35；In table two, fifth line is followed successively by b3≤TIn＜ b4、X41、X42、X43、X44、X45；Table two In the 6th row be followed successively by b4≤TIn、X51、X52、X53、X54、X55.When n is other numerical value, according to above-mentioned the like.
an-1For setting value, its span is 0-10 DEG C；bn-1For setting value, its span is 12-35 DEG C；X11、 Xn1、X1n、XnnBeing respectively in specified temp interval, refrigerating capacity meets the preferable low voltage value of air conditioning system when requiring.Specifically, X11 Can be 0.6MPa, 0.8MPa, 0.95MPa, 1MPa, 1.2MPa or 1.3MPa etc., it is to be understood that X11Desirable 0.6MPa, Any number between 1.3MPa or 0.6MPa and 1.3MPa.Correspondingly, X1n、Xn1、XnnAlso it is such.
Certainly, it is possible to select △ TIn、TInAnd P0Relation be other, it is not limited to the situation shown in table one.
S13) according to PLowWith P0The frequency of compressor of relation regulation outdoor machine of air-conditioner:
Specifically, if PLow<P0, then the frequency of compressor is reduced；If PLow=P0, then the frequency keeping compressor is constant；If PLow >P0, then the frequency of compressor is increased.
It should be noted that compare PLowWith P0Time, it is desirable to PLowCorresponding △ TIn、TInNumerical value at P0Corresponding △ TIn、TIn's In the range of.
In refrigeration mode, air conditioning system low pressure PLowIt is can compressor frequency output in the same air conditioning system of direct reaction Height, compressor frequency is the highest, air conditioning system low pressure PLowCan be the lowest；Compressor frequency is the lowest, air conditioning system low pressure PLowCan get over High.Therefore, according to air conditioning system low pressure PLowSize regulates the frequency of compressor.
The indoor temperature that above-mentioned refrigeration control method sets according to indoor environment temperature and user determines air conditioning system Target low-pressure, regulates the frequency of compressor further according to the air conditioning system low pressure of reality and the magnitude relationship of target low-pressure, it is ensured that Air conditioning system low pressure in the reasonable scope, then achieves the control to refrigerating capacity output, ensures that the system of compressor The output of cold energy power is suitable, it is ensured that the refrigerating capacity of output meets user's requirement.
The embodiment of the present invention provide outdoor machine of air-conditioner control method in, refrigeration control method according to indoor environment temperature, Indoor temperature and air conditioning system low pressure that user sets are controlled, then the refrigerating capacity output of outdoor machine of air-conditioner is only by outdoor machine of air-conditioner Vertical control, it is to avoid air-conditioning internal machine affects refrigeration control so that arbitrary form that outdoor machine of air-conditioner can be arranged in pairs or groups and any cold Air-conditioning internal machine, improves the versatility of outdoor machine of air-conditioner；Meanwhile, also effectively reduce the type of outdoor machine of air-conditioner, reduce outside air-conditioning The design cost of machine and production management's cost.
In order to ensure the reliability of air conditioning system, in the control method of above-mentioned outdoor machine of air-conditioner, refrigeration control method also includes Step:
Refrigerant temperature T at detection air conditioning system low pressureLow；
According to PLow、TLowObtain suction superheat △ TInhale, as △ TInhale< when 2, opening of the electric expansion valve of reduction outdoor machine of air-conditioner Degree.
Specifically, step S11) further comprise the steps of: the refrigerant temperature T at detection air conditioning system low pressureLow；Refrigeration control method Further comprise the steps of:
S14) according to PLow、TLowObtain suction superheat △ TInhale, as △ TInhale< when 2, reduce the electric expansion valve of outdoor machine of air-conditioner Aperture.
It should be noted that △ TInhaleFor TLowAnd PLowThe difference of corresponding saturation temperature.As △ TInhale< when 2, liquid may be had back hidden Suffer from, need to reduce flow, therefore, reduce the aperture of electric expansion valve.
Air conditioning system is run and is the most normally primarily to see the operational factor of compressor the most normally, the namely suction of compressor The gas degree of superheat is the most normal, and above-mentioned refrigeration control method, by suction superheat △ TInhale, control in preset range, then can protect Card compressor is properly functioning, thus ensures that air conditioning system is properly functioning.
Further, above-mentioned refrigeration control method further comprises the steps of:
Detection outdoor environment temperature TOutward, delivery temperature T of compressorRow；
As △ TInhaleWhen >=2, according to TIn、TOutwardDetermine target exhaust temperature T of compressorMeshIf, TRow<TMesh, then reduce outside air-conditioning The aperture of the electric expansion valve of machine；If TRow=TMesh, then the aperture keeping electric expansion valve is constant；If TRow>TMesh, then electronics is increased swollen The aperture of swollen valve.
Specifically, step S11) further comprise the steps of: detection outdoor environment temperature TOutward, delivery temperature T of compressorRow；Step S14) further comprise the steps of: as △ TInhaleWhen >=2, according to TIn、TOutwardDetermine target exhaust temperature T of compressorMeshIf, TRow<TMesh, then reduce The aperture of the electric expansion valve of outdoor machine of air-conditioner；If TRow=TMesh, then the aperture keeping electric expansion valve is constant；If TRow>TMesh, then increase The aperture of electric expansion valve.
Preferably, TIn、TOutwardAnd TMeshRelation as shown in Table 2:
Table two
In table two, n is natural number, and n >=2；C11∈ { 50 DEG C, 100 DEG C }, C1n∈ { 50 DEG C, 100 DEG C }, Cn1∈ 50 DEG C, 100 DEG C }, Cnn∈ { 50 DEG C, 100 DEG C }；An-1∈ { 12 DEG C, 35 DEG C }, Bn-1∈ { 30 DEG C, 55 DEG C }, AnWith An-1Difference range be 0.5 DEG C～10 DEG C, BnWith Bn-1Difference range be 0.5 DEG C～10 DEG C.
It is understood that in table two, string ellipsis can represent only one column data, it is possible to represent the number that two row are above According to；A line ellipsis can represent only data line, it is possible to represents the data of more than two row.Specifically, as n=2, then two, table Having three row three row, in table two, the first row is followed successively by gauge outfit, TIn<A1、A1≤TIn, in table two, the second row is followed successively by TOutward＜ B1、C11、 C12, in table two, the third line is followed successively by B1≤TOutward、C21、C22；As n=3, then table two only four row four row, in table two, the first row depends on Secondary for gauge outfit, TIn<A1、A1≤TIn＜ A2、A2≤TIn, in table two, the second row is followed successively by TOutward＜ B1、C11、C12、C13, in table two the 3rd Row is followed successively by B1≤TOutward＜ B2、C21、C22、C23；In table two, fourth line is followed successively by B2≤TOutward、C31、C32、C33；As n=4, then table The two only five row five elements, in table two, the first row is followed successively by gauge outfit, TIn<A1、A1≤TIn＜ A2、A2≤TIn＜ A3、A3≤TIn, in table two Second row is followed successively by TOutward＜ B1、C11、C12、C13、C14, in table two, the third line is followed successively by B1≤TOutward＜ B2、C21、C22、C23、C24；Table In two, fourth line is followed successively by B2≤TOutward＜ B3、C31、C32、C33、C34；In table two, fifth line is followed successively by B3≤TOutward、C41、C42、C43、 C44；As n=5, then table two only six row six row, in table two, the first row is followed successively by gauge outfit, TIn<A1、A1≤TIn＜ A2、A2≤TIn ＜ A3、A3≤TIn＜ A4、A4≤TIn, in table two, the second row is followed successively by TOutward＜ B1、C11、C12、C13、C14、C15, in table two, the third line depends on Secondary for B1≤TOutward＜ B2、C21、C22、C23、C24、C25；In table two, fourth line is followed successively by B2≤TOutward＜ B3、C31、C32、C33、C34、C35； In table two, fifth line is followed successively by B3≤TOutward＜ B4、C41、C42、C43、C44、C45；In table two, the 6th row is followed successively by B4≤TOutward、C51、C52、 C53、C54、C55.When n is other numerical value, according to above-mentioned the like.
An-1For setting value, its span is 12-35 DEG C；Bn-1For setting value, its span is 30-55 DEG C；C11、 Cn1、C1n、CnnIt is respectively in specified temp interval, the ideal exhaust temperature of compressor during air conditioning system normal refrigerating operaton.Specifically Ground, C11Can be 50 DEG C, 55 DEG C, 60 DEG C, 80 DEG C, 95 DEG C or 100 DEG C etc., it is to be understood that C11Desirable 50 DEG C, 100 DEG C, Or any number between 50 DEG C and 100 DEG C.Correspondingly, C1n、Cn1、CnnAlso it is such.
Certainly, it is possible to select TIn、TOutwardAnd TMeshRelation be other, it is not limited to the situation shown in table two.
Delivery temperature T of compressorRowAlso it is to judge the parameter that compressor is the most properly functioning, above-mentioned refrigeration control side Method, controls in preset range by the delivery temperature of compressor, then further increase the reliability that compressor is properly functioning.
Meanwhile, in the control method of above-mentioned outdoor machine of air-conditioner, refrigeration control method is according to the coolant temperature at air conditioning system low pressure Degree TLow, air conditioning system low pressure PLow, detection outdoor environment temperature TOutward, delivery temperature T of compressorRow, indoor environment temperature TInCarry out Control, then the reliability of compressor is independently controlled by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine affects refrigeration control so that outside air-conditioning Machine ensure that reliability when the air-conditioning internal machine of the arbitrary form arranged in pairs or groups and any cold.
Meanwhile, the control method of above-mentioned outdoor machine of air-conditioner, both meet the normal output of air conditioner refrigerating ability, in turn ensure that pressure The running status of contracting machine is good；And, to stock control after sale, after-sales service also can reduce management cost, and to user Also the interior machine having more multi-form selects, and improves serviceability.Target exhaust temperature is according to indoor environment temperature and room The optimal preferably outlet air temperature that external environment temperature is given, as long as running in corresponding ambient temperature subregion, reaches Corresponding target exhaust temperature, the delivery temperature of compressor controls the most out of question.
When above-mentioned outdoor machine of air-conditioner can be applicable to single cold type air conditioning system, apply also for the air conditioning system that can heat.For Ensure when outdoor machine of air-conditioner is applied to the air conditioning system heated, it is also possible to the arbitrary form of collocation and the air-conditioning of any cold Interior machine, the control method of above-mentioned outdoor machine of air-conditioner also includes heat-production control method, and this heat-production control method includes step:
S21) detection indoor environment temperature TIn, air conditioning system high pressure PHigh:
It should be noted that outdoor machine of air-conditioner is when heating mode, the position of air conditioning system high pressure is in connection cross valve and room In first connecting tube of interior heat exchanger, in the i.e. first connecting tube, the pressure of coolant is air conditioning system high pressure PHigh.Specifically, pass through Temperature sensor detection indoor environment temperature, detects air conditioning system high pressure by pressure transducer.The embodiment of the present invention is to temperature The type of sensor and pressure transducer does not limits.
S22) according to TInDetermine the target high-pressure P of air conditioning system0':
When heating, air conditioning system high pressure dominant response is in condensation temperature, namely mainly relevant with indoor environment temperature； Indoor temperature is also that Consumer's Experience is the most direct simultaneously, therefore air conditioning system when a certain indoor environment temperature stable operation Preferably the heating capacity of air conditioning system is reacted more direct as target high-pressure, this target high-pressure by high pressure.
Preferably, TInWith target high-pressure P0' relation as shown in Table 3:
Table three
Indoor environment temperature Target high-pressure
D1＜ TIn Y1
D1≤TIn＜ D2 Y2
D2≤TIn＜ D3 Y3
…… ……
Dn-1≤TIn Yn
In table three, n is natural number, and n >=2；Y1∈ { 2.0MPa, 3.8MPa}, Yn∈ { 2.0MPa, 3.8MPa}；Dn-1∈ { 12 DEG C, 35 DEG C }, DnWith Dn-1Difference range be 0.5 DEG C～10 DEG C.
It is understood that in table three, a line ellipsis can represent only data line, it is possible to represent the number of more than two row According to.Specifically, as n=2, table three only three row two arranges, and the second row of table three is followed successively by D1＜ TIn、Y1, the third line of table three depends on Secondary for D1≤TIn、Y2；As n=3, table three only four row two arranges, and the second row of table three is followed successively by D1＜ TIn、Y1, the 3rd of table three Row is followed successively by D1≤TIn＜ D2、Y2, the third line of table three is followed successively by D2≤TIn、Y3；As n=4, table three the only five elements two arrange, table Second row of three is followed successively by D1＜ TIn、Y1, the third line of table three is followed successively by D1≤TIn＜ D2、Y2, the third line of table three is followed successively by D2 ≤TIn＜ D3、Y3, the fourth line of table three is followed successively by D3≤TIn、Y4；As n=5, table three only six row two arranges, the second row of table three It is followed successively by D1＜ TIn、Y1, the third line of table three is followed successively by D1≤TIn＜ D2、Y2, the third line of table three is followed successively by D2≤TIn＜ D3、Y3, The fourth line of table three is followed successively by D3≤TIn＜ D4、Y5；The fifth line of table three is followed successively by D4≤TIn、Y5.When n is other numerical value, press According to above-mentioned the like.
Dn-1For setting value, its span is 12-35 DEG C；Y1、YnBeing respectively in specified temp interval, heating capacity meets to be wanted The preferable high-voltage value of air conditioning system when asking.Specifically, Y1Can be 2.0MPa, 2.1MPa, 2.25MPa, 2.6MPa, 3.2MPa or 3.8MPa etc., it is to be understood that Y1Any number between desirable 2.0MPa, 3.8MPa or 2.0MPa and 3.8MPa.Phase Ying Di, YnAlso it is such.
Certainly, it is possible to select TIn、TOutwardAnd TMeshRelation be other, it is not limited to the situation shown in table two.
S23) if PHigh<P0', then reduce the frequency of the compressor of outdoor machine of air-conditioner；If PHigh=P0', then keep the frequency of compressor Constant；If PHigh>P0', then increase the frequency of compressor.
In heating mode, compressor frequency is the highest, air conditioning system high pressure PHighCan be the lowest；Compressor frequency is the lowest, air-conditioning system System high pressure PHighCan be the highest.Therefore, according to air conditioning system high pressure PHighSize regulates the frequency of compressor.
Above-mentioned heat-production control method, according to indoor environment temperature TIn, air conditioning system high pressure PHigh, target high-pressure P0' regulate The frequency of compressor, final control air conditioning system high pressure in the reasonable scope, then achieves the control to heating capacity output, from And ensure that the heating capacity output of compressor is suitable, it is ensured that the heating capacity of output meets user's requirement, reaches rationally to heat Effect.
Meanwhile, above-mentioned heat-production control method, according to indoor environment temperature TIn, air conditioning system high pressure PHigh, target high-pressure P0' come Be controlled, then heating capacity defrosting independently is controlled by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine affects and heats control so that air-conditioning Arbitrary form that outer machine can be arranged in pairs or groups and the air-conditioning internal machine of any heat, be effectively increased versatility, decrease outdoor machine of air-conditioner Type, reduces design cost and production management's cost of outdoor machine of air-conditioner.
In order to ensure the reliability of air conditioning system, in the control method of above-mentioned outdoor machine of air-conditioner, heat-production control method also includes Step S24):
If P1≤PHigh<P2, then forbid reducing the aperture of the electric expansion valve of outdoor machine of air-conditioner；
If PHigh≥P2, then increase the aperture of electric expansion valve, until PHigh=P3, and PHigh=P3Time stop increase electronic expansion The aperture of valve；
Wherein, P3<P1<P2, P1、P2And P3It is preset value.
Above-mentioned heat-production control method, it is achieved that anti-high voltage control excessively, improves the reliability of compressor.
Above-mentioned P1、P2And P3It is preset value, for the concrete numerical value of three, can be designed according to practical situation, this This is not limited by bright embodiment.
In order to quickly reduce air conditioning system high pressure, when increasing the aperture of electric expansion valve, prioritizing selection opens big electronics rapidly The aperture of expansion valve.Specifically, in preset time t1Interior by the aperture increase E of described electric expansion valve1Step；Wherein, t1It is not more than 60s, E1It is not more than 100B.It is understood that B is step, it it is the unit of electronic expansion valve opening.Further, t1For 30s, E1For 60B.
Work as combustion, it is also possible to other speed open the aperture of big electric expansion valve, it is not limited to above-described embodiment.
Further, above-mentioned heat-production control method further comprises the steps of:
Delivery temperature T of detection compressorRow,Outdoor environment temperature TOutward；
Work as PHigh<P3Time, according to TIn、TOutwardDetermine target exhaust temperature T of compressorMeshIf, TRow<TMesh, then outdoor machine of air-conditioner is reduced The aperture of electric expansion valve；If TRow=TMesh, then the aperture keeping electric expansion valve is constant；If TRow>TMesh, then electronic expansion is increased The aperture of valve.
Specifically, in above-mentioned heat-production control method, step S21) further comprise the steps of: delivery temperature T detecting compressorRow, Outdoor environment temperature TOutward；Step S24) further comprise the steps of: and work as PHigh<P3Time, according to TIn、TOutwardDetermine the target exhaust temperature of compressor TMeshIf, TRow<TMesh, then the aperture of the electric expansion valve of outdoor machine of air-conditioner is reduced；If TRow=TMesh, then the aperture of electric expansion valve is kept not Become；If TRow>TMesh, then the aperture of electric expansion valve is increased.
Target exhaust temperature is an optimal preferably aerofluxus given according to indoor environment temperature and outdoor environment temperature Temperature value, as long as running in corresponding ambient temperature subregion, reaches corresponding target exhaust temperature, the delivery temperature of compressor Control the most out of question.
Preferably, TIn、TOutwardAnd TMeshRelation as shown in Table 4:
Table four
In table four, n is natural number, and n >=2；H11∈ { 50 DEG C, 100 DEG C }, H1n∈ { 50 DEG C, 100 DEG C }, Hn1∈ 50 DEG C, 100 DEG C }, Hnn∈ { 50 DEG C, 100 DEG C }；En-1∈ { 12 DEG C, 35 DEG C }, Fn-1∈ { 30 DEG C, 55 DEG C }, EnWith En-1Difference range be 0.5 DEG C～10 DEG C, FnWith Fn-1Difference range be 0.5 DEG C～10 DEG C.
It is understood that in table four, string ellipsis can represent only one column data, it is possible to represent the number that two row are above According to；A line ellipsis can represent only data line, it is possible to represents the data of more than two row.Specifically, as n=2, then four, table Having three row three row, in table four, the first row is followed successively by gauge outfit, TIn<E1、E1≤TIn, in table four, the second row is followed successively by TOutward＜ F1、H11、 H12, in table four, the third line is followed successively by F1≤TOutward、H21、H22；As n=3, then table four only four row four row, in table four, the first row depends on Secondary for gauge outfit, TIn<E1、E1≤TIn＜ E2、E2≤TIn, in table four, the second row is followed successively by TOutward＜ F1、H11、H12、H13, in table four the 3rd Row is followed successively by F1≤TOutward＜ F2、H21、H22、H23；In table four, fourth line is followed successively by F2≤TOutward、H31、H32、H33；As n=4, then table The four only five row five elements, in table four, the first row is followed successively by gauge outfit, TIn<E1、E1≤TIn＜ E2、E2≤TIn＜ E3、E3≤TIn, in table four Second row is followed successively by TOutward＜ F1、H11、H12、H13、H14, in table four, the third line is followed successively by F1≤TOutward＜ F2、H21、H22、H23、H24；Table In four, fourth line is followed successively by F2≤TOutward＜ F3、H31、H32、H33、H34；In table four, fifth line is followed successively by F3≤TOutward、H41、H42、H43、 H44；As n=5, then table four only six row six row, in table four, the first row is followed successively by gauge outfit, TIn<E1、E1≤TIn＜ E2、E2≤TIn ＜ E3、E3≤TIn＜ E4、E4≤TIn, in table four, the second row is followed successively by TOutward＜ F1、H11、H12、H13、H14、H15, in table four, the third line depends on Secondary for F1≤TOutward＜ F2、H21、H22、H23、H24、H25；In table four, fourth line is followed successively by F2≤TOutward＜ F3、H31、H32、H33、H34、H35； In table four, fifth line is followed successively by F3≤TOutward＜ F4、H41、H42、H43、H44、H45；In table four, the 6th row is followed successively by F4≤TOutward、H51、H52、 H53、H54、H55.When n is other numerical value, according to above-mentioned the like.
En-1For setting value, its span is 12-35 DEG C；Fn-1For setting value, its span is 30-55 DEG C；H11、 Hn1、H1n、HnnIt is respectively in specified temp interval, the ideal exhaust temperature of compressor during air conditioning system normal refrigerating operaton.Specifically Ground, H11Can be 50 DEG C, 55 DEG C, 60 DEG C, 80 DEG C, 95 DEG C or 100 DEG C etc., it is to be understood that H11Desirable 50 DEG C, 100 DEG C, Or any number between 50 DEG C and 100 DEG C.Correspondingly, H1n、Hn1、HnnAlso it is such.
Certainly, it is possible to select TIn、TOutwardAnd TMeshRelation be other, it is not limited to the situation shown in table two.
The delivery temperature of compressor is also to judge the parameter that compressor is the most properly functioning, the control of above-mentioned outdoor machine of air-conditioner In method processed, the delivery temperature of compressor is controlled in preset range by heat-production control method, then further increase compressor Properly functioning reliability.
Meanwhile, in the control method of above-mentioned outdoor machine of air-conditioner, refrigeration control method is according to air conditioning system high pressure PHigh, outside sensing chamber Ambient temperature TOutward, delivery temperature T of compressorRow, indoor environment temperature TInBe controlled, then the reliability of compressor is by air-conditioning Outer machine independently controls, it is to avoid air-conditioning internal machine impact heats control so that outdoor machine of air-conditioner is at the arbitrary form of collocation and the coldest Reliability is ensure that during the air-conditioning internal machine measured.
Meanwhile, the control method of above-mentioned outdoor machine of air-conditioner, both meet the normal output of air-conditioning heating ability, in turn ensure that pressure The running status of contracting machine is good.And, to stock control after sale, after-sales service also can reduce management cost, and to user Also the interior machine having more multi-form selects, and improves serviceability.
In the control method of above-mentioned outdoor machine of air-conditioner, by delivery temperature T of temperature sensor detection compressorRow, outdoor ring Border temperature TOutward.The type of temperature sensing is not limited by the embodiment of the present invention.
As it is shown in figure 1, the control method of the outdoor machine of air-conditioner provided based on above-described embodiment, the embodiment of the present invention additionally provides A kind of outdoor machine of air-conditioner, this outdoor machine of air-conditioner includes: compressor 1, outdoor heat exchanger 3, and gas-liquid separator 10, cross valve 6 and electronics are swollen Swollen valve 4；The first interface (E) of cross valve 6 is provided with the first connecting tube 9 for connecting with indoor heat exchanger 5.May be appreciated It is that second interface (S) of cross valve 6 is connected with the air entry of compressor 1 by gas-liquid separator 10, and the 3rd of cross valve 6 connects Mouth (C) connects with outdoor heat exchanger 3, and the 4th interface (D) of cross valve 6 connects with the air vent of compressor 1.Outdoor heat exchanger 3 Connected with indoor heat exchanger 5 by electric expansion valve 4.
In Fig. 1, dotted line is arranged above outdoor machine of air-conditioner, is air-conditioning internal machine below dotted line.Air-conditioning internal machine and the connection of outdoor machine of air-conditioner Place is respectively equipped with the first valve 11 and the second valve 12, the first valve 11 between cross valve 6 and indoor heat exchanger 5, second Valve 12 is between electric expansion valve 4 and indoor heat exchanger 5.
The inventive point of the present invention is, outdoor machine of air-conditioner also includes: pressure transducer 8, the first temperature sensor, and first calculates Module, the first data memory module, the first control module；Wherein, pressure transducer 8 is serially connected with the first connecting tube 9 and for examining Survey the pressure of coolant in the first connecting tube 9；First temperature sensor is used for detecting indoor environment temperature TIn；First computing module is used According to △ TIn=TIn-T0Obtain △ TIn；First data memory module is for storing by △ TInAnd TInThe air conditioning system determined Target low-pressure P0；When outdoor machine of air-conditioner is in refrigeration mode, if PLow<P0, the first control module subtracts for the frequency controlling compressor 1 Little；If PLow=P0, the first control module is constant for the frequency controlling compressor 1；If PLow>P0, the first control module is used for controlling The frequency of compressor 1 increases.
It should be noted that T0The indoor temperature set for user, PLowFor air conditioning system low pressure, and PLowAt outdoor machine of air-conditioner The detected value of pressure transducer 8 when refrigeration mode.
The outdoor machine of air-conditioner that above-described embodiment provides, determines sky according to the indoor temperature that indoor environment temperature and user set The target low-pressure of adjusting system, the first control module regulates according to the magnitude relationship of actual air conditioning system low pressure with target low-pressure The frequency of compressor 1, it is ensured that air conditioning system low pressure in the reasonable scope, then achieves the control to refrigerating capacity output, from And ensure that the refrigerating capacity output of compressor 1 is suitable, it is ensured that the refrigerating capacity of output meets user's requirement.
The outdoor machine of air-conditioner that the embodiment of the present invention provides, the indoor temperature set according to indoor environment temperature, user and air-conditioning System low-voltage is controlled, then the refrigerating capacity output of outdoor machine of air-conditioner is independently controlled by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine shadow Ring refrigeration control so that arbitrary form that outdoor machine of air-conditioner can be arranged in pairs or groups and the air-conditioning internal machine of any cold, improve outdoor machine of air-conditioner Versatility；Meanwhile, also effectively reducing the type of outdoor machine of air-conditioner, the design cost reducing outdoor machine of air-conditioner becomes with production management This.
Above-mentioned target low-pressure is according to △ TInAnd TInGiving a preferable low voltage value out, target low-pressure is tested according to reality Situation is revised and determines, is aggregated into a form after determining rationally, and during control, table look at obtains and △ TInAnd TIn Corresponding target low pressure value.
Preferably, △ TIn、TInAnd P0Relation be shown in Table shown in one:
Table one
△TIn＜ a1 a1≤△TIn＜ a2 a2≤△TIn＜ a3 …… an-1≤△TIn
TIn＜ b1 X11 X12 X13 …… X1n
b1≤TIn＜ b2 X21 X22 X23 …… X2n
b2≤TIn＜ b3 X31 X32 X33 …… X3n
…… …… …… …… …… ……
bn-1≤TIn Xn1 Xn2 Xn3 …… Xnn
In table one, n is natural number, and n >=2；X11∈ { 0.6MPa, 1.3MPa}, X1n∈ { 0.6MPa, 1.3MPa}, Xn1∈ { 0.6MPa, 1.3MPa}, Xnn∈ { 0.6MPa, 1.3MPa}；an-1∈ { 0 DEG C, 10 DEG C }, bn-1∈ { 12 DEG C, 35 DEG C }, anWith an-1 Difference range be 0.5 DEG C～10 DEG C, bnWith bn-1Difference range be 0.5 DEG C～10 DEG C.About the containing of ellipsis in table one Justice, refer to above.
It is understood that an-1For setting value, its span is 0-10 DEG C；bn-1For setting value, its span is 12-35℃；X11、Xn1、X1n、XnnBeing respectively in specified temp interval, refrigerating capacity meets the preferable low pressure of air conditioning system when requiring Value.
Specifically, X11Can be 0.6MPa, 0.8MPa, 0.95MPa, 1MPa, 1.2MPa or 1.3MPa etc., it is possible to understand that It is, X11Any number between desirable 0.6MPa, 1.3MPa or 0.6MPa and 1.3MPa.Correspondingly, X1n、Xn1、XnnAlso it is So.For anWith an-1Difference and bnWith bn-1Difference, can be set according to actual needs, the embodiment of the present invention pair This does not limits.
Certainly, it is possible to select △ TIn、TInAnd P0Relation be other, it is not limited to the situation shown in table one.
In order to ensure the reliability of compressor 1, the outdoor machine of air-conditioner that above-described embodiment provides also includes: the second temperature sensor 7, the second computing module, the second control module；Wherein, the second temperature sensor 7 is serially connected with the first connecting tube 9 and for detection the Refrigerant temperature in one connecting tube 9；Second computing module is for according to PLow、TLowObtain suction superheat △ TInhale；At outdoor machine of air-conditioner In refrigeration mode and as △ TInhale< when 2, the second control module reduces for the aperture controlling electric expansion valve 4.
It should be noted that TLowFor the refrigerant temperature T at the low pressure of air conditioning systemLow, and TLowIt is in refrigeration for outdoor machine of air-conditioner The detected value of the second temperature sensor 7 during pattern.
Air conditioning system runs whether normal be the most normally primarily to see the operational factor of compressor 1, namely compressor 1 Suction superheat is the most normal, and above-mentioned outdoor machine of air-conditioner, by suction superheat △ TInhale, control in preset range, then to ensure that Compressor 1 properly functioning, thus ensure that air conditioning system is properly functioning.
Further, the outdoor machine of air-conditioner that above-described embodiment provides also includes: three-temperature sensor, the 4th temperature sensor 2, the second data memory module, the 3rd control module；Wherein, three-temperature sensor is used for detecting outdoor environment temperature TOutward；The Four temperature sensors 2 are for detecting delivery temperature T of compressor 1Row；Second data memory module is for storing by TIn、TOutwardDetermine Target exhaust temperature T of compressor 1Mesh；Outdoor machine of air-conditioner is in refrigeration mode and △ TInhaleWhen >=2, if TRow<TMesh, the 3rd control module Reduce for controlling the aperture of electric expansion valve 4；If TRow=TMesh, the 3rd control module is for controlling the aperture of electric expansion valve 4 Constant；If TRow>TMesh, the 3rd control module increases for the aperture controlling electric expansion valve 4.
Delivery temperature T of compressor 1RowAlso it is to judge the parameter that compressor 1 is the most properly functioning, outside above-mentioned air-conditioning Machine, controls in preset range by the delivery temperature of compressor 1, then further increase the reliability that compressor 1 is properly functioning.
Meanwhile, in above-mentioned outdoor machine of air-conditioner, the reliability of compressor 1 is independently controlled by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine Affect refrigeration control so that outdoor machine of air-conditioner ensure that reliable when the air-conditioning internal machine of the arbitrary form arranged in pairs or groups and any cold Property.
Meanwhile, above-mentioned outdoor machine of air-conditioner, both meet the normal output of air conditioner refrigerating ability, in turn ensure that the fortune of compressor 1 Row is in good condition；And, to stock control after sale, after-sales service also can reduce management cost, and user is also had more The interior machine of multi-form selects, and improves serviceability.
Target exhaust temperature TMeshIt is according to indoor environment temperature TInWith outdoor environment temperature TOutwardA given optimal ideal Outlet air temperature, as long as running in corresponding ambient temperature subregion, reach corresponding target exhaust temperature, compressor 1 Delivery temperature controls the most out of question.
Preferably, TIn、TOutwardAnd TMeshRelation as shown in Table 2:
Table two
In table two, n is natural number, and n >=2；C11∈ { 50 DEG C, 100 DEG C }, C1n∈ { 50 DEG C, 100 DEG C }, Cn1∈ 50 DEG C, 100 DEG C }, Cnn∈ { 50 DEG C, 100 DEG C }；An-1∈ { 12 DEG C, 35 DEG C }, Bn-1∈ { 30 DEG C, 55 DEG C }, AnWith An-1Difference range be 0.5 DEG C～10 DEG C, BnWith Bn-1Difference range be 0.5 DEG C～10 DEG C.About the implication of ellipsis in table two, refer to above.
It is understood that An-1For setting value, its span is 12-35 DEG C；Bn-1For setting value, its span is 30-55℃；C11、Cn1、C1n、CnnIt is respectively in specified temp interval, the ideal of compressor 1 during air conditioning system normal refrigerating operaton Delivery temperature.
Specifically, C11Can be 50 DEG C, 55 DEG C, 60 DEG C, 80 DEG C, 95 DEG C or 100 DEG C etc., it is to be understood that C11Desirable Any number between 50 DEG C, 100 DEG C or 50 DEG C and 100 DEG C.Correspondingly, C1n、Cn1、CnnAlso it is such.
Certainly, it is possible to select TIn、TOutwardAnd TMeshRelation be other, it is not limited to the situation shown in table two.
During in order to ensure that outdoor machine of air-conditioner is applied to the air conditioning system heated, it is also possible to the arbitrary form of collocation is with any The air-conditioning internal machine of cold, the outdoor machine of air-conditioner that above-described embodiment provides also includes: the 3rd data memory module, the 4th control module； Wherein, the 3rd data memory module is for storing by TInDetermine the target high-pressure P of air conditioning system0’；Outdoor machine of air-conditioner is in and heats mould During formula, if PHigh<P0', the 4th control module reduces for the frequency controlling compressor 1；If PHigh=P0', the 4th control module is used for The frequency controlling compressor 1 is constant；If PHigh>P0', the 4th control module increases for the frequency controlling compressor 1.
It should be noted that PHighFor air conditioning system high pressure, and PHighDescribed pressure when being in heating mode for described outdoor machine of air-conditioner The detected value of force transducer 8.
When heating, air conditioning system high pressure dominant response is in condensation temperature, namely mainly relevant with indoor environment temperature； Indoor temperature is also that Consumer's Experience is the most direct simultaneously, therefore air conditioning system when a certain indoor environment temperature stable operation Preferably the heating capacity of air conditioning system is reacted more direct as target high-pressure, this target high-pressure by high pressure.
Above-mentioned outdoor machine of air-conditioner, according to indoor environment temperature TIn, air conditioning system high pressure PHigh, target high-pressure P0' regulate compression The frequency of machine 1, final control air conditioning system high pressure in the reasonable scope, then achieves the control to heating capacity output, thus Ensure that the heating capacity output of compressor 1 is suitable, it is ensured that the heating capacity of output meets user's requirement, reaches rationally to heat effect Really.
Meanwhile, above-mentioned outdoor machine of air-conditioner, according to indoor environment temperature TIn, air conditioning system high pressure PHigh, target high-pressure P0' carry out Control, then heating capacity defrosting independently is controlled by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine affects and heats control so that outdoor machine of air-conditioner The arbitrary form that can arrange in pairs or groups and the air-conditioning internal machine of any heat, be effectively increased versatility, decreases the type of outdoor machine of air-conditioner, Reduce design cost and production management's cost of outdoor machine of air-conditioner.
Preferably, TInWith target high-pressure P0' relation as shown in Table 3:
Table three
Indoor environment temperature Target high-pressure
D1＜ TIn Y1
D1≤TIn＜ D2 Y2
D2≤TIn＜ D3 Y3
…… ……
Dn-1≤TIn Yn
In table three, n is natural number, and n >=2；Y1∈ { 2.0MPa, 3.8MPa}, Yn∈ { 2.0MPa, 3.8MPa}；Dn-1∈ { 12 DEG C, 35 DEG C }, DnWith Dn-1Difference range be 0.5 DEG C～10 DEG C.About the implication of ellipsis in table three, refer to above.
It is understood that Dn-1For setting value, its span is 12-35 DEG C；Y1、YnIt is respectively specified temp interval In, heating capacity meets the preferable high-voltage value of air conditioning system when requiring.
Specifically, Y1Can be 2.0MPa, 2.1MPa, 2.25MPa, 2.6MPa, 3.2MPa or 3.8MPa etc., it is possible to understand that , Y1Any number between desirable 2.0MPa, 3.8MPa or 2.0MPa and 3.8MPa.Correspondingly, YnAlso it is such.
Certainly, it is possible to select TIn、TOutwardAnd TMeshRelation be other, it is not limited to the situation shown in table two.
In order to ensure the reliability of air conditioning system, the outdoor machine of air-conditioner that above-described embodiment provides also includes the 5th control module, When outdoor machine of air-conditioner is in heating mode, if P1≤PHigh<P2, the 5th control module forbids subtracting for the aperture controlling electric expansion valve 4 Little；If PHigh≥P2, the 5th control module increases until P for the aperture controlling electric expansion valve 4High=P3, and PHigh=P3Time the 5th Control module controls the aperture of electric expansion valve 4 and stops increasing；Wherein, P3<P1<P2, P1、P2And P3It is preset value.
Above-mentioned outdoor machine of air-conditioner, it is achieved that anti-high voltage control excessively, improves the reliability of compressor 1.
Above-mentioned P1、P2And P3It is preset value, for the concrete numerical value of three, can be designed according to practical situation, this This is not limited by bright embodiment.
In order to quickly reduce air conditioning system high pressure, when above-mentioned control module is for controlling the aperture increase of electric expansion valve 4, In preset time t1Interior control module controls the aperture of electric expansion valve 4 and increases E1Step；Wherein, t1It is not more than 60s, E1It is not more than 100B.It is understood that B is step, it it is the unit of electronic expansion valve opening.Further, t1For 30s, E1For 60B.
Work as combustion, it is also possible to other speed open the aperture of big electric expansion valve 4, it is not limited to above-described embodiment.
Further, the outdoor machine of air-conditioner that above-described embodiment provides also includes: three-temperature sensor, the 4th temperature sensor 2, the 4th data memory module, the 6th control module；Wherein, three-temperature sensor is used for detecting outdoor environment temperature TOutward；The Four temperature sensors 2 are for detecting delivery temperature T of compressor 1Row；4th data memory module is for storing by TIn、TOutwardDetermine Target exhaust temperature T of compressor 1Mesh, work as PHigh<P3Time, if TRow<TMesh, the 6th control module is for controlling electric expansion valve 4 Aperture reduces；If TRow=TMesh, the 6th control module is constant for the aperture controlling electric expansion valve 4；If TRow>TMesh, the 6th controls Module increases for the aperture controlling electric expansion valve 4.
Target exhaust temperature is an optimal preferably aerofluxus given according to indoor environment temperature and outdoor environment temperature Temperature value, as long as running in corresponding ambient temperature subregion, reaches corresponding target exhaust temperature, the aerofluxus temperature of compressor 1 Degree controls the most out of question.
Preferably, TIn、TOutwardAnd TMeshRelation as shown in Table 4:
Table four
In table four, n is natural number, and n >=2；H11∈ { 50 DEG C, 100 DEG C }, H1n∈ { 50 DEG C, 100 DEG C }, Hn1∈ 50 DEG C, 100 DEG C }, Hnn∈ { 50 DEG C, 100 DEG C }；En-1∈ { 12 DEG C, 35 DEG C }, Fn-1∈ { 30 DEG C, 55 DEG C }, EnWith En-1Difference range be 0.5 DEG C～10 DEG C, FnWith Fn-1Difference range be 0.5 DEG C～10 DEG C.About the implication of ellipsis in table four, refer to above.
It is understood that En-1For setting value, its span is 12-35 DEG C；Fn-1For setting value, its span is 30-55℃；H11、Hn1、H1n、HnnIt is respectively in specified temp interval, the ideal of compressor 1 during air conditioning system normal refrigerating operaton Delivery temperature.
Specifically, H11Can be 50 DEG C, 55 DEG C, 60 DEG C, 80 DEG C, 95 DEG C or 100 DEG C etc., it is to be understood that H11Desirable Any number between 50 DEG C, 100 DEG C or 50 DEG C and 100 DEG C.Correspondingly, H1n、Hn1、HnnAlso it is such.
Certainly, it is possible to select TIn、TOutwardAnd TMeshRelation be other, it is not limited to the situation shown in table two.
The delivery temperature of compressor 1 is also to judge the parameter that compressor 1 is the most properly functioning, above-mentioned outdoor machine of air-conditioner In control method, the delivery temperature of compressor 1 is controlled in preset range by heat-production control method, then further increase compression The reliability that machine 1 is properly functioning.
Meanwhile, in above-mentioned outdoor machine of air-conditioner, the reliability of compressor 1 is independently controlled by outdoor machine of air-conditioner, it is to avoid air-conditioning internal machine Impact heats control so that outdoor machine of air-conditioner ensure that reliable when the air-conditioning internal machine of the arbitrary form arranged in pairs or groups and any cold Property.
Meanwhile, above-mentioned outdoor machine of air-conditioner, both meet the normal output of air-conditioning heating ability, in turn ensure that the fortune of compressor 1 Row is in good condition.And, to stock control after sale, after-sales service also can reduce management cost, and user is also had more The interior machine of multi-form selects, and improves serviceability.
The outdoor machine of air-conditioner provided based on above-described embodiment, the embodiment of the present invention additionally provides a kind of air conditioning system, this air-conditioning System includes air-conditioner outdoor unit, and this air-conditioner outdoor unit is the air-conditioner outdoor unit described in above-described embodiment.
The outdoor machine of air-conditioner provided due to above-described embodiment has above-mentioned technique effect, the air-conditioning system that the embodiment of the present invention provides System has above-mentioned outdoor machine of air-conditioner, then the air conditioning system that the embodiment of the present invention provides also has corresponding technique effect, the most no longer Repeat.
Described above to the disclosed embodiments, makes those skilled in the art be capable of or uses the present invention.To this The multiple amendment of a little embodiments will be apparent from for a person skilled in the art, and generic principles defined herein can With without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will not be limited It is formed on the embodiments shown herein, and is to fit to consistent with principles disclosed herein and features of novelty the widest Scope.

Claims (19)

1. the control method of an outdoor machine of air-conditioner, it is characterised in that include that refrigeration control method, described refrigeration control method include Step:
Detection indoor environment temperature TIn, air conditioning system low pressure PLow；
According to △ TInAnd TInDetermine the target low-pressure P of air conditioning system0；
If PLow<P0, then the frequency of the compressor of described outdoor machine of air-conditioner is reduced；If PLow=P0, then the frequency of described compressor is kept not Become；If PLow>P0, then the frequency of described compressor is increased；
Wherein, △ TIn=TIn-T0, T0The indoor temperature set for user.
Control method the most according to claim 1, it is characterised in that △ TIn、TInAnd P0Relation be shown in Table shown in one:
Table one
△TIn＜ a1 a1≤△TIn＜ a2 a2≤△TIn＜ a3 …… an-1≤△TIn TIn＜ b1 X11 X12 X13 …… X1n b1≤TIn＜ b2 X21 X22 X23 …… X2n b2≤TIn＜ b3 X31 X32 X33 …… X3n …… …… …… …… …… …… bn-1≤TIn Xn1 Xn2 Xn3 …… Xnn
In table one, n is natural number, and n >=2；X11∈ { 0.6MPa, 1.3MPa}, X1n∈ { 0.6MPa, 1.3MPa}, Xn1∈ { 0.6MPa, 1.3MPa}, Xnn∈ { 0.6MPa, 1.3MPa}；an-1∈ { 0 DEG C, 10 DEG C }, bn-1∈ { 12 DEG C, 35 DEG C }, anWith an-1 Difference range be 0.5 DEG C～10 DEG C, bnWith bn-1Difference range be 0.5 DEG C～10 DEG C.
Control method the most according to claim 1, it is characterised in that described refrigeration control method further comprises the steps of:
Refrigerant temperature T at detection air conditioning system low pressureLow；
According to PLow、TLowObtain suction superheat △ TInhale, as △ TInhale< when 2, reduce the opening of electric expansion valve of described outdoor machine of air-conditioner Degree.
Control method the most according to claim 3, it is characterised in that described refrigeration control method further comprises the steps of:
Detection outdoor environment temperature TOutward, delivery temperature T of described compressorRow；
As △ TInhaleWhen >=2, according to TIn、TOutwardDetermine target exhaust temperature T of described compressorMeshIf, TRow<TMesh, then described sky is reduced Adjust the aperture of the electric expansion valve of outer machine；If TRow=TMesh, then the aperture keeping described electric expansion valve is constant；If TRow>TMesh, then increase The aperture of big described electric expansion valve.
Control method the most according to claim 4, it is characterised in that TIn、TOutwardAnd TMeshRelation be shown in Table shown in two:
Table two
In table two, n is natural number, and n >=2；C11∈ { 50 DEG C, 100 DEG C }, C1n∈ { 50 DEG C, 100 DEG C }, Cn1∈ 50 DEG C, 100 DEG C, Cnn∈ { 50 DEG C, 100 DEG C }；An-1∈ { 12 DEG C, 35 DEG C }, Bn-1∈ { 30 DEG C, 55 DEG C }, AnWith An-1Difference range be 0.5 DEG C～10 DEG C, BnWith Bn-1Difference range be 0.5 DEG C～10 DEG C.
Control method the most according to claim 1, it is characterised in that also include heat-production control method, described in heat control Method includes step:
Detect described indoor environment temperature TIn, air conditioning system high pressure PHigh；
According to TInDetermine the target high-pressure P of described air conditioning system0’；
If PHigh<P0', then reduce the frequency of the compressor of described outdoor machine of air-conditioner；If PHigh=P0', then keep the frequency of described compressor Constant；If PHigh>P0', then increase the frequency of described compressor.
Control method the most according to claim 6, it is characterised in that TInAnd P0' relation be shown in Table and show shown in:
Table three
In table three, n is natural number, and n >=2；Y1∈ { 2.0MPa, 3.8MPa}, Yn∈ { 2.0MPa, 3.8MPa}；Dn-1∈{12 DEG C, 35 DEG C }, DnWith Dn-1Difference range be 0.5 DEG C～10 DEG C.
Control method the most according to claim 6, it is characterised in that described heat-production control method further comprises the steps of:
If P1≤PHigh<P2, then forbid reducing the aperture of the electric expansion valve of outdoor machine of air-conditioner；
If PHigh≥P2, then the aperture of electric expansion valve is increased until PHigh=P3, and PHigh=P3Time stop increasing the opening of electric expansion valve Degree；
Wherein, P3<P1<P2, P1、P2And P3It is preset value.
Control method the most according to claim 8, it is characterised in that work as PHigh≥P2Opening of electric expansion valve described in Shi Zeng great Degree, particularly as follows: in preset time t1Interior by the aperture increase E of described electric expansion valve1Step；Wherein, t1It is not more than 60s, E1Not quite In 100B.
Control method the most according to claim 8, it is characterised in that described heat-production control method further comprises the steps of:
Detect delivery temperature T of described compressorRow, outdoor environment temperature TOutward；
Work as PHigh<P3Time, according to TIn、TOutwardDetermine target exhaust temperature T of described compressorMeshIf, TRow<TMesh, then reduce outside described air-conditioning The aperture of the electric expansion valve of machine；If TRow=TMesh, then the aperture keeping described electric expansion valve is constant；If TRow>TMesh, then institute is increased State the aperture of electric expansion valve.
11. control methods according to claim 10, it is characterised in that TIn、TOutwardAnd TMeshRelation be shown in Table shown in four:
Table four
In table four, n is natural number, and n >=2；H11∈ { 50 DEG C, 100 DEG C }, H1n∈ { 50 DEG C, 100 DEG C }, Hn1∈ 50 DEG C, 100 DEG C, Hnn∈ { 50 DEG C, 100 DEG C }；En-1∈ { 12 DEG C, 35 DEG C }, Fn-1∈ { 30 DEG C, 55 DEG C }, EnWith En-1Difference range be 0.5 DEG C～10 DEG C, FnWith Fn-1Difference range be 0.5 DEG C～10 DEG C.
12. 1 kinds of outdoor machine of air-conditioner, including: compressor, cross valve and electric expansion valve；Wherein, the first interface of described cross valve It is provided with the first connecting tube for connecting with indoor heat exchanger；It is characterized in that, described outdoor machine of air-conditioner also includes:
Pressure transducer, be serially connected with described first connecting tube and in detecting described first connecting tube the pressure of coolant；
First temperature sensor, is used for detecting indoor environment temperature TIn；
First computing module, for according to △ TIn=TIn-T0Obtain △ TIn；
First data memory module, for storage by △ TInAnd TInThe target low-pressure P of the air conditioning system determined0；
First control module, when described outdoor machine of air-conditioner is in refrigeration mode, if PLow<P0, subtract for controlling the frequency of described compressor Little；If PLow=P0, constant for controlling the frequency of described compressor；If PLow>P0, increase for controlling the frequency of described compressor；
Wherein, T0The indoor temperature set for user, PLowFor air conditioning system low pressure, and PLowIt is in refrigeration mould for described outdoor machine of air-conditioner The detected value of described pressure transducer during formula.
13. outdoor machine of air-conditioner according to claim 12, it is characterised in that also include:
Second temperature sensor, is serially connected with described first connecting tube and the refrigerant temperature in detecting described first connecting tube；
Second computing module, for according to PLow、TLowObtain suction superheat △ TInhale；
Second control module, described outdoor machine of air-conditioner is in refrigeration mode and as △ TInhale< when 2, it is used for controlling described electric expansion valve Aperture reduce；
Wherein, TLowFor the refrigerant temperature T at the low pressure of described air conditioning systemLow, and TLowIt is in refrigeration mode for described outdoor machine of air-conditioner The detected value of Shi Suoshu the second temperature sensor.
14. outdoor machine of air-conditioner according to claim 13, it is characterised in that also include:
Three-temperature sensor, is used for detecting outdoor environment temperature TOutward；
4th temperature sensor, for detecting delivery temperature T of described compressorRow；
Second data memory module, for storage by TIn、TOutwardDetermine target exhaust temperature T of described compressorMesh；
3rd control module, described outdoor machine of air-conditioner is in refrigeration mode and △ TInhaleWhen >=2, if TRow<TMesh, it is used for controlling described electronics The aperture of expansion valve reduces；If TRow=TMesh, constant for controlling the aperture of described electric expansion valve；If TRow>TMesh, it is used for controlling institute The aperture stating electric expansion valve increases.
15. outdoor machine of air-conditioner according to claim 12, it is characterised in that also include:
3rd data memory module, for storage by TInDetermine the target high-pressure P of described air conditioning system0’；
4th control module, when described outdoor machine of air-conditioner is in heating mode, if PHigh<P0', for controlling the frequency of described compressor Reduce；If PHigh=P0', constant for controlling the frequency of described compressor；If PHigh>P0', for controlling the frequency of described compressor Increase；
Wherein, PHighFor air conditioning system high pressure, and PHighThe inspection of described pressure transducer when being in heating mode for described outdoor machine of air-conditioner Measured value.
16. outdoor machine of air-conditioner according to claim 15, it is characterised in that also include:
5th control module, when described outdoor machine of air-conditioner is in heating mode, if P1≤PHigh<P2, it is used for controlling described electric expansion valve Aperture forbid reduce；If PHigh≥P2, increase until P for controlling the aperture of described electric expansion valveHigh=P3, and PHigh=P3Time The aperture controlling described electric expansion valve stops increasing；
Wherein, P3<P1<P2, P1、P2And P3It is preset value.
17. outdoor machine of air-conditioner according to claim 16, it is characterised in that it is swollen that described control module is used for controlling described electronics When the aperture of swollen valve increases, in preset time t1Interior described control module controls the aperture of described electric expansion valve and increases E1Step；Its In, t1It is not more than 60s, E1It is not more than 100B.
18. outdoor machine of air-conditioner according to claim 16, it is characterised in that also include:
Three-temperature sensor, is used for detecting outdoor environment temperature TOutward；
4th temperature sensor, for detecting delivery temperature T of described compressorRow；
4th data memory module, for storage by TIn、TOutwardTarget exhaust temperature T of the described compressor determinedMesh,
6th control module, works as PHigh<P3Time, if TRow<TMesh, reduce for controlling the aperture of described electric expansion valve；If TRow=TMesh, Constant for controlling the aperture of described electric expansion valve；If TRow>TMesh, increase for controlling the aperture of described electric expansion valve.
19. 1 kinds of air conditioning systems, including air-conditioner outdoor unit, it is characterised in that described air-conditioner outdoor unit is in claim 12-18 Air-conditioner outdoor unit described in any one.
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CN107255306A (en) * 2017-05-19 2017-10-17 海信（山东）空调有限公司 A kind of Combined frequency-change air-conditioning and its control method
CN108302651A (en) * 2016-09-18 2018-07-20 苏州三星电子有限公司 A kind of multi-gang air-conditioner outdoor machine system and its Defrost method
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