CN108954712A - The control method and control system and air conditioner of air conditioner - Google Patents

The control method and control system and air conditioner of air conditioner Download PDF

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Publication number
CN108954712A
CN108954712A CN201810814714.4A CN201810814714A CN108954712A CN 108954712 A CN108954712 A CN 108954712A CN 201810814714 A CN201810814714 A CN 201810814714A CN 108954712 A CN108954712 A CN 108954712A
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China
Prior art keywords
degree
supercooling
superheat
expansion valve
aperture
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CN201810814714.4A
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CN108954712B (en
Inventor
舒文涛
许永锋
梁伯启
李波
万永强
陈汝锋
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Priority to CN201810814714.4A priority Critical patent/CN108954712B/en
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    • 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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load

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

Abstract

The invention proposes a kind of control method of air conditioner, control system and air conditioners, wherein air conditioner includes indoor unit and new blower, and control method includes: the new wind load value for obtaining new blower and the total load value of air conditioner；Calculate the ratio of new wind load value and total load value；According to the present mode of operation of preset range and air conditioner where ratio, the aperture of the electric expansion valve of indoor unit and/or new blower is controlled.The control method of air conditioner proposed by the present invention, by the ratio for calculating new wind load value and total load value, in the present mode of operation according to the ratio corresponding preset range and air conditioner, control the aperture of the electric expansion valve of indoor unit and/or new blower, to be respectively controlled the effect that play it can to indoor environment offer suitable temperature fresh air to the electric expansion valve of indoor unit and new blower on the basis of new blower practical operation situation, while being avoided that excessive refrigerant enters new blower and causes the thermoregulation effect of indoor unit bad again.

Description

The control method and control system and air conditioner of air conditioner
Technical field
The present invention relates to air conditioner technical fields, control method, a kind of air conditioner in particular to a kind of air conditioner Control system and a kind of air conditioner.
Background technique
Multi-joint fresh air handining unit is individually connect there are machine in new blower with outdoor unit in actual installation use process Mounting means；The case where being installed after being mixed there is also machine in new blower with general room machine with outdoor unit.Because in Fresh air handling units Machine is mainly indoor offer fresh air, and if general room owner adjusts room temperature, if the two is according to identical parameter, side Method controls electric expansion valve, it is possible to can make general room machine refrigerant is very few to cause effect bad, and flow through new blower Group refrigerant is excessive, causes the waste of the energy, causes the decline of entire air-conditioning system comfort.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, embodiment according to the first aspect of the invention, the invention proposes a kind of control methods of air conditioner.
Embodiment according to the second aspect of the invention, the invention proposes a kind of control systems of air conditioner.
Embodiment according to the third aspect of the invention we, the invention proposes a kind of air conditioners.
In view of this, embodiment according to the first aspect of the invention, the invention proposes a kind of control method of air conditioner, Air conditioner includes indoor unit and new blower, and control method includes: to obtain the new wind load value of new blower and the total load of air conditioner Value；Calculate the ratio of new wind load value and total load value；According to the current operation mould of preset range and air conditioner where ratio Formula controls the aperture of the electric expansion valve of indoor unit and/or new blower.
The control method of air conditioner proposed by the present invention, by calculating the ratio of new wind load value and total load value, in root According to the present mode of operation of the ratio corresponding preset range and air conditioner, the electronic expansion of indoor unit and/or new blower is controlled The aperture of valve, to be carried out respectively on the basis of new blower practical operation situation to the electric expansion valve of indoor unit and new blower Control improves the operation effect of entire air-conditioning system so that the aperture of the electric expansion valve of indoor unit and/or new blower is more reasonable Fruit play it can and provide the effect of suitable temperature fresh air to indoor environment, while it is new to be avoided that excessive refrigerant enters again Blower and cause the thermoregulation effect of indoor unit bad.
In addition, the control method of the air conditioner in above-described embodiment provided by the invention can also have following supplementary technology Feature:
In the above-mentioned technical solutions, it is preferable that further include: obtain the outlet temperature of the heat exchanger of air conditioner；According to outlet Temperature and the corresponding saturation temperature of heat exchanger calculate the current degree of superheat or current degree of supercooling of heat exchanger；Adjust electric expansion valve Aperture, until the current degree of superheat or current degree of supercooling reach the default degree of superheat or default degree of supercooling.
In the technical scheme, the corresponding saturation temperature of heat exchanger is obtained by the outlet temperature of heat exchanger, then calculates and changes Heat exchanger exit is subcooled in the aperture for gradually adjusting electric expansion valve in hot device outlet subcooling or the heat exchanger exit degree of superheat Degree approaches default degree of supercooling, and finally promotes heat exchanger exit degree of supercooling to be equal to default degree of supercooling, or overheat heat exchanger exit Degree approaches the default degree of superheat, and the heat exchanger exit degree of superheat is finally promoted to be equal to the default degree of superheat, so that indoor environment reaches Optimal comfort state.
In any of the above-described technical solution, it is preferable that according to the current operation of preset range and air conditioner where ratio It the step of aperture of the electric expansion valve of mode, control indoor unit and/or new blower, specifically includes: when ratio is greater than first in advance If threshold value, when being less than or equal to the second preset threshold, in cooling mode, the electronics of indoor unit is adjusted according to the first default degree of superheat The aperture of expansion valve adjusts the aperture of the electric expansion valve of new blower according to the second default degree of superheat；In a heating mode, according to First default degree of supercooling adjusts the aperture of the electric expansion valve of indoor unit, and the electronics of new blower is adjusted according to the second default degree of supercooling The aperture of expansion valve；Wherein, the second preset threshold is greater than the first preset threshold, and the second default degree of superheat is equal to the first default overheat Degree adds the first default degree of superheat difference, and it is poor plus the first default degree of supercooling that the second default degree of supercooling is equal to the first default degree of supercooling Value.
In the technical scheme, when air conditioner is run in a chiller mode, if ratio is greater than the first preset threshold, be less than etc. In the second preset threshold, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, it is default according to first The degree of superheat adjusts the aperture of the electric expansion valve of new blower plus the first default degree of superheat difference；It is transported in air conditioner with heating mode When row, if ratio is greater than the first preset threshold, it is less than or equal to the second preset threshold, then according in the first default degree of supercooling regulation room The aperture of the electric expansion valve of machine adjusts the electronics of new blower according to the first default degree of supercooling plus the first default degree of supercooling difference The aperture of expansion valve, wherein the first preset threshold is less than the second preset threshold.I.e. when ratio be greater than the first preset threshold, then newly Load accounting of the blower in multi-line system is excessive, needs to limit it accordingly, goes out to make a slip of the tongue by calculating indoor unit Temperature or degree of supercooling determine opening big or turning down for electronic expansion valve of indoor unit；Further, by the way that new blower to be arranged more The high default degree of superheat or default degree of supercooling adjust fresh air machine electric expansion valve, and then control the refrigerant stream for entering new blower Amount.
In any of the above-described technical solution, it is preferable that further include: when ratio is greater than the second preset threshold, it is less than or equal to the When three preset thresholds, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, according to Third presets the aperture that the degree of superheat adjusts the electric expansion valve of new blower；In a heating mode, according to the first default degree of supercooling tune The aperture for saving the electric expansion valve of indoor unit, presets the aperture that degree of supercooling adjusts the electric expansion valve of new blower according to third；Its In, third predetermined threshold value is greater than the second preset threshold, and it is default plus second equal to the first default degree of superheat that third presets the degree of superheat Degree of superheat difference, third preset degree of supercooling and are equal to the first default degree of supercooling plus the second default degree of supercooling difference；Second preset Temperature difference is greater than the first default degree of superheat difference, and the second default degree of supercooling difference is greater than the first default degree of supercooling difference.
In the technical scheme, when air conditioner is run in a chiller mode, if ratio is greater than the second preset threshold, be less than etc. In third predetermined threshold value, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, it is default according to first Degree of supercooling adjusts the aperture of the electric expansion valve of new blower plus the second default degree of supercooling difference；It is transported in air conditioner with heating mode When row, if ratio is greater than the second preset threshold, it is less than or equal to third predetermined threshold value, then according in the first default degree of supercooling regulation room The aperture of the electric expansion valve of machine adjusts the electronics of new blower according to the first default degree of supercooling plus the second default degree of supercooling difference The aperture of expansion valve, wherein third predetermined threshold value is greater than the second preset threshold, and it is default that the second default degree of superheat difference is greater than first Degree of superheat difference, the second default degree of supercooling difference are greater than the first default degree of supercooling difference.I.e. when ratio be greater than the second preset threshold, Then load accounting of the new blower in multi-line system is excessive, needs to limit it accordingly, is gone out by calculating indoor unit Temperature of making a slip of the tongue or degree of supercooling determine opening big or turning down for electronic expansion valve of indoor unit；Further, by setting new blower The higher default degree of superheat or default degree of supercooling are set to adjust fresh air machine electric expansion valve, and then controls and enters the cold of new blower Matchmaker's flow.
In any of the above-described technical solution, it is preferable that further include: when ratio is greater than third predetermined threshold value, in refrigeration mould Under formula, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, is adjusted according to the 4th default degree of superheat new The aperture of the electric expansion valve of blower；In a heating mode, the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling Aperture, the aperture of the electric expansion valve of new blower is adjusted according to the 4th default degree of supercooling；Wherein, the 4th default degree of superheat is equal to The first default degree of superheat presets degree of superheat difference plus third, and the 4th default degree of supercooling is equal to the first default degree of supercooling and adds third Default degree of supercooling difference；Third presets degree of superheat difference and is greater than the second default degree of superheat difference, and it is big that third presets degree of supercooling difference In the second default degree of supercooling difference.
In the technical scheme, when air conditioner is run in a chiller mode, if ratio is greater than third predetermined threshold value, basis First default degree of supercooling adjusts the aperture of the electric expansion valve of indoor unit, according to the first default degree of superheat plus the default overheat of third Degree difference adjusts the aperture of the electric expansion valve of new blower；When air conditioner is run with heating mode, if ratio is pre- greater than third If threshold value, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, is added according to the first default degree of supercooling Upper third presets the aperture that degree of supercooling difference adjusts the electric expansion valve of new blower, and third presets degree of superheat difference and is greater than second in advance If degree of superheat difference, third presets degree of supercooling difference and is greater than the second default degree of supercooling difference.Threshold is preset when ratio is greater than third Value, then load accounting of the new blower in multi-line system is excessive, needs to limit it accordingly, by calculating indoor unit Outlet superheat degree or degree of supercooling determine opening big or turning down for electronic expansion valve of indoor unit；Further, by by new blower The higher default degree of superheat or default degree of supercooling are set to adjust fresh air machine electric expansion valve, and then controls and enters new blower Cold medium flux.
In any of the above-described technical solution, it is preferable that further include: when ratio is less than or equal to the first preset threshold, Under refrigeration mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In a heating mode, according to One default degree of supercooling adjusts the aperture of the electric expansion valve of indoor unit；When ratio is equal to 1 or 0, in cooling mode, according to the The one default degree of superheat adjusts the aperture of the electric expansion valve of indoor unit；In a heating mode, it is adjusted according to the first default degree of supercooling The aperture of the electric expansion valve of indoor unit.
In the technical scheme, when air conditioner is run in a chiller mode, if ratio is less than or equal to the first preset threshold Or ratio is equal to 1 or 0, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In air conditioner to make When heat pattern is run, if ratio is less than or equal to the first preset threshold or ratio is equal to 1 or 0, according to the first default degree of supercooling Adjust the aperture of the electric expansion valve of indoor unit.
In any of the above-described technical solution, it is preferable that total load value be equal to new wind load value and indoor unit load value it With.
In the technical scheme, new wind load value adds the load value of indoor unit to be equal to total load value.
To sum up, opening for electric expansion valve is determined in the load accounting of entire air-conditioning system by calculating new blower load Degree, by the way that under different load, new blower presets the difference of the degree of superheat, to ensure that it is a variety of different new that whole system can adapt to Blower load accounting.According to type or the difference of control precision, the division of new blower overheat/cold degree section can have different Division methods and demarcation interval play it can to realize through the control to new blower and general room machine electric expansion valve The effect of suitable temperature fresh air is provided to indoor environment, while being unlikely to lead to it since excessive refrigerant enters new blower Its bad situation of general through-inner-machine effect.
Embodiment according to the second aspect of the invention, the invention proposes a kind of control system of air conditioner, air conditioner packets Include indoor unit and new blower, control system includes: acquiring unit, for obtain new blower new wind load value and air conditioner it is total Load value；Computing unit, for calculating the ratio of new wind load value Yu total load value；Control unit, for according to where ratio Preset range and air conditioner present mode of operation, control the aperture of the electric expansion valve of indoor unit and/or new blower.
The control system of air conditioner proposed by the present invention, by calculating the ratio of new wind load value and total load value, in root According to the present mode of operation of the ratio corresponding preset range and air conditioner, the electronic expansion of indoor unit and/or new blower is controlled The aperture of valve, to be carried out respectively on the basis of new blower practical operation situation to the electric expansion valve of indoor unit and new blower Control improves the operation effect of entire air-conditioning system so that the aperture of the electric expansion valve of indoor unit and/or new blower is more reasonable Fruit play it can and provide the effect of suitable temperature fresh air to indoor environment, while it is new to be avoided that excessive refrigerant enters again Blower and cause the thermoregulation effect of indoor unit bad.
In the above-mentioned technical solutions, it is preferable that further include: acquiring unit is also used to obtain the outlet of the heat exchanger of air conditioner Temperature；Computing unit is also used to calculate the current degree of superheat of heat exchanger according to outlet temperature and the corresponding saturation temperature of heat exchanger Or current degree of supercooling；Control unit is also used to adjust the aperture of electric expansion valve, until the current degree of superheat or current degree of supercooling reach To the default degree of superheat or default degree of supercooling.
In the technical scheme, the corresponding saturation temperature of heat exchanger is obtained by the outlet temperature of heat exchanger, then calculates and changes Heat exchanger exit is subcooled in the aperture for gradually adjusting electric expansion valve in hot device outlet subcooling or the heat exchanger exit degree of superheat Degree approaches default degree of supercooling, and finally promotes heat exchanger exit degree of supercooling to be equal to default degree of supercooling, or overheat heat exchanger exit Degree approaches the default degree of superheat, and the heat exchanger exit degree of superheat is finally promoted to be equal to the default degree of superheat.
In any of the above-described technical solution, it is preferable that control unit is specifically used for: when ratio be greater than the first preset threshold, When less than or equal to the second preset threshold, in cooling mode, the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat Aperture, the aperture of the electric expansion valve of new blower is adjusted according to the second default degree of superheat；In a heating mode, pre- according to first If degree of supercooling adjusts the aperture of the electric expansion valve of indoor unit, the electric expansion valve of new blower is adjusted according to the second default degree of supercooling Aperture；It is in cooling mode, pre- according to first when ratio is greater than the second preset threshold, is less than or equal to third predetermined threshold value If the degree of superheat adjusts the aperture of the electric expansion valve of indoor unit, the electric expansion valve that the degree of superheat adjusts new blower is preset according to third Aperture；In a heating mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, it is pre- according to third If degree of supercooling adjusts the aperture of the electric expansion valve of new blower；When ratio is greater than third predetermined threshold value, in cooling mode, root The aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, the electricity of new blower is adjusted according to the 4th default degree of superheat The aperture of sub- expansion valve；In a heating mode, the aperture of the electric expansion valve of indoor unit, root are adjusted according to the first default degree of supercooling The aperture of the electric expansion valve of new blower is adjusted according to the 4th default degree of supercooling；Wherein, the second preset threshold is greater than the first default threshold Value, third predetermined threshold value are greater than the second preset threshold；It is default plus first that the second default degree of superheat is equal to the first default degree of superheat Degree of superheat difference, third preset the degree of superheat and are equal to the first default degree of superheat plus the second default degree of superheat difference, and the 4th preset Temperature is equal to the first default degree of superheat and presets degree of superheat difference plus third；Second default degree of supercooling is equal to the first default degree of supercooling In addition the first default degree of supercooling difference, it is poor plus the second default degree of supercooling equal to the first default degree of supercooling that third presets degree of supercooling Value, the 4th default degree of supercooling are equal to the first default degree of supercooling and preset degree of supercooling difference plus third；Second default degree of superheat difference Greater than the first default degree of superheat difference, third presets degree of superheat difference and is greater than the second default degree of superheat difference；Second default supercooling It spends difference and is greater than the first default degree of supercooling difference, third presets degree of supercooling difference and is greater than the second default degree of supercooling difference.
In the technical scheme, when air conditioner is run in a chiller mode, if ratio is greater than the first preset threshold, be less than etc. In the second preset threshold, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, it is default according to first The degree of superheat adjusts the aperture of the electric expansion valve of new blower plus the first default degree of superheat difference；If ratio is greater than the second default threshold Value is less than or equal to third predetermined threshold value, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, according to First default degree of supercooling adjusts the aperture of the electric expansion valve of new blower plus the second default degree of supercooling difference；If ratio is greater than the Three preset thresholds then adjust the aperture of the electric expansion valve of indoor unit according to the first default degree of supercooling, according to the first default overheat Degree presets the aperture that degree of superheat difference adjusts the electric expansion valve of new blower plus third；It is run in air conditioner with heating mode When, if ratio is greater than the first preset threshold, it is less than or equal to the second preset threshold, then indoor unit is adjusted according to the first default degree of supercooling Electric expansion valve aperture, the electronics for adjusting new blower plus the first default degree of supercooling difference according to the first default degree of supercooling is swollen The aperture of swollen valve；If ratio is greater than the second preset threshold, it is less than or equal to third predetermined threshold value, then according to the first default degree of supercooling tune The aperture for saving the electric expansion valve of indoor unit adjusts new blower plus the second default degree of supercooling difference according to the first default degree of supercooling Electric expansion valve aperture；If ratio is greater than third predetermined threshold value, the electricity of indoor unit is adjusted according to the first default degree of supercooling The aperture of sub- expansion valve presets the electric expansion valve that degree of supercooling difference adjusts new blower plus third according to the first default degree of supercooling Aperture；Wherein, the first preset threshold is greater than the second preset threshold less than the second preset threshold, third predetermined threshold value；Second is pre- If degree of superheat difference is greater than the first default degree of superheat difference, third presets degree of superheat difference and is greater than the second default degree of superheat difference； Second default degree of supercooling difference is greater than the first default degree of supercooling difference, and third presets degree of supercooling difference and is greater than the second default degree of supercooling Difference.
In any of the above-described technical solution, it is preferable that control unit is specifically also used to: when ratio is less than or equal to first in advance If when threshold value, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In heating mould Under formula, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling；When ratio is equal to 1 or 0, in refrigeration mould Under formula, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In a heating mode, default according to first Degree of supercooling adjusts the aperture of the electric expansion valve of indoor unit.
In the technical scheme, when air conditioner is run in a chiller mode, if ratio is less than or equal to the first preset threshold Or ratio is equal to 1 or 0, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In air conditioner to make When heat pattern is run, if ratio is less than or equal to the first preset threshold or ratio is equal to 1 or 0, according to the first default degree of supercooling Adjust the aperture of the electric expansion valve of indoor unit.
In any of the above-described technical solution, it is preferable that total load value be equal to new wind load value and indoor unit load value it With.
In the technical scheme, new wind load value adds the load value of indoor unit to be equal to total load value.
To sum up, opening for electric expansion valve is determined in the load accounting of entire air-conditioning system by calculating new blower load Degree, by the way that under different load, new blower presets the difference of the degree of superheat, to ensure that it is a variety of different new that whole system can adapt to Blower load accounting.According to type or the difference of control precision, the division of new blower overheat/cold degree section can have different Division methods and demarcation interval play it can to realize through the control to new blower and general room machine electric expansion valve The effect of suitable temperature fresh air is provided to indoor environment, while being unlikely to lead to it since excessive refrigerant enters new blower Its bad situation of general through-inner-machine effect.
Embodiment according to the third aspect of the invention we, the invention proposes a kind of air conditioners, including such as above-mentioned technical proposal Any one of described in air conditioner control system.
Air conditioner proposed by the present invention, because including the control system of air conditioner as described in any one of above-mentioned technical proposal System, therefore, have include the control system of air conditioner as described in any one of above-mentioned technical proposal whole beneficial effects, It no longer states one by one herein.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 shows the flow chart of the control method of air conditioner provided by one embodiment of the present invention；
Fig. 2 shows the flow charts of the control method of the air conditioner of another embodiment of the present invention offer；
Fig. 3 shows the flow chart of the control method of the air conditioner of another embodiment of the present invention offer；
Fig. 4 shows the flow chart of the control method of the air conditioner of another embodiment of the present invention offer；
Fig. 5 shows the schematic block diagram of the control system of air conditioner provided by one embodiment of the present invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
Fig. 1 shows the flow chart of the control method of air conditioner provided by one embodiment of the present invention.
As shown in Figure 1, the specific steps of the control method of air conditioner provided by one embodiment of the present invention:
Step 102, the new wind load value of new blower and the total load value of air conditioner are obtained；
Step 104, the ratio of new wind load value and total load value is calculated；
Step 106, according to the present mode of operation of preset range and air conditioner where ratio, control indoor unit and/or The aperture of the electric expansion valve of new blower.
The control method of air conditioner provided by the invention, by calculating the ratio of new wind load value and total load value, in root According to the present mode of operation of the ratio corresponding preset range and air conditioner, the electronic expansion of indoor unit and/or new blower is controlled The aperture of valve, to be carried out respectively on the basis of new blower practical operation situation to the electric expansion valve of indoor unit and new blower Control improves the operation effect of entire air-conditioning system so that the aperture of the electric expansion valve of indoor unit and/or new blower is more reasonable Fruit play it can and provide the effect of suitable temperature fresh air to indoor environment, while it is new to be avoided that excessive refrigerant enters again Blower and cause the thermoregulation effect of indoor unit bad.
Fig. 2 shows the flow charts of the control method of the air conditioner of another embodiment of the present invention offer.
As shown in Fig. 2, the specific steps of the control method for the air conditioner that another embodiment of the present invention provides:
Step 202, the new wind load value of new blower and the total load value of air conditioner are obtained；
Step 204, the ratio of new wind load value and total load value is calculated；
Step 206, the outlet temperature of the heat exchanger of air conditioner is obtained；
Step 208, it according to outlet temperature and the corresponding saturation temperature of heat exchanger, calculates the current degree of superheat of heat exchanger or works as Preceding degree of supercooling；
Step 210, according to the present mode of operation of preset range and air conditioner where ratio, control indoor unit and/or The aperture of the electric expansion valve of new blower；
Step 212, until the current degree of superheat or current degree of supercooling reach the default degree of superheat or default degree of supercooling.
The control method of air conditioner provided by the invention is passed through by calculating the ratio of new wind load value and total load value The outlet temperature of heat exchanger obtains the corresponding saturation temperature of heat exchanger, then calculates heat exchanger exit degree of supercooling or heat exchanger exit The degree of superheat controls indoor unit and/or new blower in the present mode of operation according to the ratio corresponding preset range and air conditioner Electric expansion valve aperture, gradually adjust electric expansion valve aperture, so that heat exchanger exit degree of supercooling is approached default degree of supercooling, And finally promote heat exchanger exit degree of supercooling to be equal to default degree of supercooling, or the heat exchanger exit degree of superheat is made to approach the default degree of superheat, And the heat exchanger exit degree of superheat is finally promoted to be equal to the default degree of superheat, thus to room on the basis of new blower practical operation situation The electric expansion valve of interior machine and new blower is respectively controlled, so that the aperture of the electric expansion valve of indoor unit and/or new blower More rationally, the operational effect of entire air-conditioning system is improved, plays it can and provides suitable temperature fresh air to indoor environment Effect, while being avoided that excessive refrigerant enters new blower and causes the thermoregulation effect of indoor unit bad again.
Fig. 3 shows the flow chart of the control method of the air conditioner of another embodiment of the present invention offer.
As shown in figure 3, the specific steps of the control method for the air conditioner that another embodiment of the present invention provides:
Step 302, the new wind load value of new blower and the total load value of air conditioner are obtained；
Step 304, the ratio of new wind load value and total load value is calculated；
Step 306, the outlet temperature of the heat exchanger of air conditioner is obtained；
Step 308, it according to outlet temperature and the corresponding saturation temperature of heat exchanger, calculates the current degree of superheat of heat exchanger or works as Preceding degree of supercooling；
Step 310, air conditioner is run in a chiller mode；
Step 312, ratio is less than or equal to first preset threshold；
Step 314, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；
Step 316, ratio is greater than the first preset threshold, is less than or equal to the second preset threshold；
Step 318, the aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, preset according to second Temperature adjusts the aperture of the electric expansion valve of new blower；
Step 320, ratio is greater than the second preset threshold, is less than or equal to third predetermined threshold value；
Step 322, the aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, preset according to third Temperature adjusts the aperture of the electric expansion valve of new blower；
Step 324, ratio is greater than the third predetermined threshold value；
Step 326, the aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, preset according to the 4th Temperature adjusts the aperture of the electric expansion valve of new blower；
Step 328, ratio is equal to 1 or 0；
Step 330, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；
Step 332, air conditioner is run with heating mode；
Step 334, ratio is equal to 1 or 0；
Step 336, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling；
Step 338, ratio is greater than third predetermined threshold value；
Step 340, the aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, preset according to the 4th Cold degree adjusts the aperture of the electric expansion valve of new blower；
Step 342, ratio is greater than the second preset threshold, is less than or equal to third predetermined threshold value；
Step 344, the aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, preset according to third Cold degree adjusts the aperture of the electric expansion valve of new blower；
Step 346, ratio is greater than the first preset threshold, is less than or equal to the second preset threshold；
Step 348, the aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, preset according to second Cold degree adjusts the aperture of the electric expansion valve of new blower；
Step 350, ratio is less than or equal to first preset threshold；
Step 352, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling；
Step 354, until the current degree of superheat or current degree of supercooling reach the default degree of superheat or default degree of supercooling.
The control method of air conditioner provided by the invention, by the ratio for calculating new wind load value NFA and total load value N NFA/N obtains the corresponding saturation temperature of heat exchanger by the outlet temperature of heat exchanger, then calculates heat exchanger exit degree of supercooling, or The heat exchanger exit degree of superheat, when air conditioner is run in a chiller mode, it is determined that section where ratio, section packet herein It is default to the second preset threshold y2, the second preset threshold y2 to third to include the: less than the first preset threshold y1, the first preset threshold y1 Threshold value y3, it is greater than third predetermined threshold value y3,0 and 1.
If NFA/N≤y1, illustrates that load accounting of the new blower in multi-line system is in permissible range, then only need root The aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat a, that is, adjust the aperture of electric expansion valve, until The heat exchanger exit degree of superheat is equal to the first default degree of superheat a；
NFA/N > y1 illustrates that load accounting of the new blower in multi-line system is excessive, needs to limit it accordingly System adjusts the aperture of the electric expansion valve of indoor unit according to the first default degree of superheat a if y1 < NFA/N≤y2, until heat exchange Device outlet superheat degree is equal to the first default degree of superheat a, and the electric expansion valve of new blower is adjusted according to the second default degree of superheat a+k1 Aperture, until the heat exchanger exit degree of superheat be equal to the second default degree of superheat a+k1, wherein the second default degree of superheat a+k1 is equal to First default degree of superheat a adds the first default degree of superheat difference k1；
If y2 < NFA/N≤y3, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat a, directly It is equal to the first default degree of superheat a to the heat exchanger exit degree of superheat, the electronics that degree of superheat a+k2 adjusts new blower is preset according to third The aperture of expansion valve, until the heat exchanger exit degree of superheat is equal to third and presets degree of superheat a+k2, wherein third presets degree of superheat a+ K2 is equal to the first default degree of superheat a and adds the second default degree of superheat difference k2；
If y3 < NFA/N, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat a, until changing Hot device outlet superheat degree is equal to the first default degree of superheat a, and the electronic expansion of new blower is adjusted according to the 4th default degree of superheat a+k3 The aperture of valve, until the heat exchanger exit degree of superheat is equal to the 4th default degree of superheat a+k3, wherein the 4th default degree of superheat a+k3 etc. Third is added to preset degree of superheat difference k3 in the first default degree of superheat a；
If NFA/N=0 or NFA/N=1, illustrate that interior machine is run in air-conditioner system to be all indoor unit or be all fresh air Machine, at this point, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat a, until the heat exchanger exit degree of superheat Degree of superheat a default equal to first.
And when air conditioner is run with heating mode, it is determined that section where ratio, section herein include: less than the One preset threshold y1, the first preset threshold y1 are to the second preset threshold y2, the second preset threshold y2 to third predetermined threshold value y3, big In third predetermined threshold value y3,0 and 1.
If NFA/N≤y1, illustrates that load accounting of the new blower in multi-line system is in permissible range, then only need root The aperture that the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling b, that is, adjust the aperture of electric expansion valve, until Heat exchanger exit degree of supercooling is equal to the first default degree of supercooling b；
If y1 < NFA/N≤y2, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling b, directly It is equal to the first default degree of supercooling b to heat exchanger exit degree of supercooling, the electronics of new blower is adjusted according to the second default degree of supercooling b+j1 The aperture of expansion valve, until heat exchanger exit degree of supercooling is equal to the second default degree of supercooling b+j1, wherein the second default degree of supercooling b+ J1 is equal to the first default degree of supercooling b and adds the first default degree of supercooling difference j1；
If y2 < NFA/N≤y3, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling b, directly It is equal to the first default degree of supercooling b to heat exchanger exit degree of supercooling, the electronics that degree of supercooling b+j2 adjusts new blower is preset according to third The aperture of expansion valve, until heat exchanger exit degree of supercooling is equal to third and presets degree of supercooling b+j2, wherein third presets degree of supercooling b+ J2 is equal to the first default degree of supercooling b and adds the second default degree of supercooling difference j2；
If y3 < NFA/N, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling b, until changing Hot device outlet subcooling is equal to the first default degree of supercooling b, and the electronic expansion of new blower is adjusted according to the 4th default degree of supercooling b+j3 The aperture of valve, until heat exchanger exit degree of supercooling is equal to the 4th default degree of supercooling b+j3, wherein the 4th default degree of supercooling b+j3 etc. Third is added to preset degree of supercooling difference j3 in the first default degree of supercooling b；
If NFA/N=0 or NFA/N=1, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling b, Until heat exchanger exit degree of supercooling is equal to the first default degree of supercooling b.
Wherein, y1 < y2 < y3, k1 < k2 < k3, j1 < j2 < j3.
The control method of the air conditioner can by the control to fresh air machine electric expansion valve and electronic expansion valve of indoor unit, It play it can and the effect of the fresh air of suitable temperature be provided indoor environment, while avoiding entering fresh air due to excessive refrigerant Machine, and the situation for causing the thermoregulation effect of other indoor units not good enough.
To sum up, opening for electric expansion valve is determined in the load accounting of entire air-conditioning system by calculating new blower load Degree, by the way that under different load, new blower presets the difference of the degree of superheat, to ensure that it is a variety of different new that whole system can adapt to Blower load accounting.According to type or the difference of control precision, the division of new blower overheat/cold degree section can have different Division methods and demarcation interval play it can to realize through the control to new blower and general room machine electric expansion valve The effect of suitable temperature fresh air is provided to indoor environment, while being unlikely to lead to it since excessive refrigerant enters new blower Its bad situation of general through-inner-machine effect.
Fig. 4 shows the flow chart of the control method for the air conditioner that another first aspect embodiment of the invention provides.
As shown in figure 4, the specific steps of the control method for the air conditioner that another first aspect embodiment of the invention provides:
Step 402, the new wind load value NFA of new blower and the total load value N of air conditioner are obtained；
Step 404, the ratio NFA/N of new wind load value and total load value is calculated；
Step 406, the outlet temperature of the heat exchanger of air conditioner is obtained；
Step 408, it according to outlet temperature and the corresponding saturation temperature of heat exchanger, calculates the current degree of superheat of heat exchanger or works as Preceding degree of supercooling；
Step 410, judge whether NFA/N=1 or 0 is true；When judging structure to be, step 412 is executed, when judgement is tied When fruit is no, step 414 is executed；
Step 412, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat； In a heating mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling；
Step 414, judge whether NFA/N≤y0 is true；When judging structure to be, step 416 is executed, judging result is worked as When being no, step 418 is executed；
Step 416, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat； In a heating mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling；
Step 418, judge whether y0 < NFA/N≤y1 is true；When judging structure to be, step 420 is executed, judgement is worked as When being as a result no, step 424 is executed；
Step 420, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, The aperture of the electric expansion valve of new blower is adjusted according to the second default degree of superheat；In a heating mode, according to the first default supercooling Degree adjusts the aperture of the electric expansion valve of indoor unit, adjusts opening for the electric expansion valve of new blower according to the second default degree of supercooling Degree；
Step 422, judge whether y1 < NFA/N≤y2 is true；When judging structure to be, step 424 is executed, judgement is worked as When being as a result no, step 426 is executed；
Step 424, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, The aperture that the degree of superheat adjusts the electric expansion valve of new blower is preset according to third；In a heating mode, according to the first default supercooling Degree adjusts the aperture of the electric expansion valve of indoor unit, presets degree of supercooling according to third and adjusts the electric expansion valve of new blower and opens Degree；
Step 426, y2≤NFA/N；
Step 428, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, The aperture of the electric expansion valve of new blower is adjusted according to the 4th default degree of superheat；In a heating mode, according to the first default supercooling Degree adjusts the aperture of the electric expansion valve of indoor unit, and the aperture of the electric expansion valve of new blower is adjusted according to the 4th default degree of supercooling
Step 430, until the current degree of superheat or current degree of supercooling reach the default degree of superheat or default degree of supercooling.
The control method of air conditioner provided by the invention detects the interior machine of unlatching after air-conditioner system brings into operation Workload demand is obtained by calculating the ratio NFA/N of new wind load value NFA and total load value N by the outlet temperature of heat exchanger The corresponding saturation temperature of heat exchanger, then heat exchanger exit degree of supercooling or the heat exchanger exit degree of superheat are calculated, then judge that NFA/N is It is no to be equal to 1 or 0, when NFA/N is equal to 1 or 0, under air conditioner is in refrigeration mode, according to the first default degree of superheat regulation room The aperture of the electric expansion valve of interior machine；When air conditioner is under heating mode, according to the first default degree of supercooling adjusting indoor unit The aperture of electric expansion valve；When NFA/N is not equal to 1 or 0, further judge whether NFA/N is less than or equal to the first preset threshold Y1, when NFA/N is less than or equal to the first preset threshold y1, under air conditioner is in refrigeration mode, according to the first default degree of superheat Adjust the aperture of the electric expansion valve of indoor unit；When air conditioner is under heating mode, according to the first default degree of supercooling regulation room The aperture of the electric expansion valve of interior machine；When NFA/N is not below or equal to the first preset threshold y1, further whether NFA/N is judged Greater than the first preset threshold y1, and it is less than or equal to the second preset threshold y2, is greater than the first preset threshold y1 in NFA/N, and be less than When equal to the second preset threshold y2, under air conditioner is in refrigeration mode, the electricity of indoor unit is adjusted according to the first default degree of superheat The aperture of sub- expansion valve adjusts the aperture of the electric expansion valve of new blower according to the second default degree of superheat；When air conditioner is in system Under heat pattern, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, according to the second default degree of supercooling tune Save the aperture of the electric expansion valve of new blower；It is not more than the first preset threshold y1 in NFA/N, and is less than or equal to the second preset threshold When y2, further judge whether NFA/N is greater than the second preset threshold y2, and is less than or equal to third predetermined threshold value y3, it is big in NFA/N It is pre- according to first under air conditioner is in refrigeration mode in the second preset threshold y2, and when being less than or equal to third predetermined threshold value y3 If the degree of superheat adjusts the aperture of the electric expansion valve of indoor unit, the electric expansion valve that the degree of superheat adjusts new blower is preset according to third Aperture；When air conditioner is under heating mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, The aperture that degree of supercooling adjusts the electric expansion valve of new blower is preset according to third；It is not more than the second preset threshold y2 in NFA/N, and When less than or equal to third predetermined threshold value y3, further judge whether NFA/N is greater than third predetermined threshold value y3, is greater than the in NFA/N When three preset threshold y3, under air conditioner is in refrigeration mode, the electronic expansion of indoor unit is adjusted according to the first default degree of superheat The aperture of valve adjusts the aperture of the electric expansion valve of new blower according to the 4th default degree of superheat；When air conditioner is in heating mode Under, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, and fresh air is adjusted according to the 4th default degree of supercooling The aperture of the electric expansion valve of machine；Finally, by the aperture regulation of electric expansion valve, reach the current degree of superheat or current degree of supercooling The control method of the default degree of superheat or default degree of supercooling, the air conditioner can be by fresh air machine electric expansion valve and indoor electromechanics The control of sub- expansion valve play it can and provide indoor environment the effect of the fresh air of suitable temperature, while avoiding due to mistake More refrigerants enters new blower, and the situation for causing the thermoregulation effect of other indoor units not good enough.
In a particular embodiment, the electric expansion valve of the indoor unit and new blower of multi-gang air-conditioner device provided by the invention Control method determines that indoor unit and fresh air are electromechanical sub swollen in the load accounting of entire air-conditioning system by calculating new blower load Swollen valve；Determined by calculating the heat exchanger exit degree of superheat or degree of supercooling the electric expansion valve of indoor unit and new blower open it is big or It turns down；In new blower load when the load accounting of entire air-conditioning system is 0 or 1, when air-conditioning system refrigerating operaton, it is all in Machine electric expansion valve is adjusted according to the first default degree of superheat a；When air-conditioning system heating operation, all interior machine electronic expansions Valve is adjusted according to the first default degree of supercooling b；It is adjusted by the way that higher target superheat degree or degree of supercooling is arranged in new blower Fresh air machine electric expansion valve is saved, and then controls the cold medium flux for entering new blower；By under different load, new blower target mistake The difference of temperature, to ensure that whole system can adapt to a variety of different new blower load accountings；According to type or control essence The division in the difference of degree, the new blower degree of superheat or degree of supercooling section can have different division methods and demarcation interval, Ke Yiren The one setting degree of superheat or the divided rank in degree of supercooling section, it can the section of any amount is set.
As shown in figure 5, embodiment according to the second aspect of the invention, the present invention provides a kind of control systems of air conditioner 500, air conditioner includes indoor unit and new blower, and control system includes: acquiring unit 502, and the fresh air for obtaining new blower is negative The total load value of charge values and air conditioner；Computing unit 504, for calculating the ratio of new wind load value Yu total load value；Control is single Member 506 controls indoor unit and/or new blower for the present mode of operation according to preset range and air conditioner where ratio Electric expansion valve aperture.
The control system 500 of air conditioner provided by the invention, by calculating the ratio of new wind load value and total load value, According to the present mode of operation of the ratio corresponding preset range and air conditioner, the electronics for controlling indoor unit and/or new blower is swollen The aperture of swollen valve, thus on the basis of new blower practical operation situation to the electric expansion valve of indoor unit and new blower respectively into Row control, so that the aperture of the electric expansion valve of indoor unit and/or new blower is more reasonable, improves the operation of entire air-conditioning system Effect play it can and provide the effect of suitable temperature fresh air to indoor environment, while be avoided that excessive refrigerant enters again New blower and cause the thermoregulation effect of indoor unit bad.
It is further preferred that further include: acquiring unit 502 is also used to obtain the outlet temperature of the heat exchanger of air conditioner；Meter Unit 504 is calculated to be also used to calculate the current degree of superheat of heat exchanger according to outlet temperature and the corresponding saturation temperature of heat exchanger or work as Preceding degree of supercooling；Control unit 506 is also used to adjust the aperture of electric expansion valve, until the current degree of superheat or current degree of supercooling reach The default degree of superheat or default degree of supercooling.
In this embodiment, the corresponding saturation temperature of heat exchanger is obtained by the outlet temperature of heat exchanger, then calculates heat exchange Device outlet subcooling or the heat exchanger exit degree of superheat make heat exchanger exit degree of supercooling in the aperture for gradually adjusting electric expansion valve Default degree of supercooling is approached, and finally promotes heat exchanger exit degree of supercooling to be equal to default degree of supercooling, or make the heat exchanger exit degree of superheat The default degree of superheat is approached, and the heat exchanger exit degree of superheat is finally promoted to be equal to the default degree of superheat.
It is further preferred that control unit 506 is specifically used for: when ratio is greater than the first preset threshold, less than or equal to second When preset threshold, in cooling mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat, according to the The two default degrees of superheat adjust the aperture of the electric expansion valve of new blower；In a heating mode, it is adjusted according to the first default degree of supercooling The aperture of the electric expansion valve of indoor unit adjusts the aperture of the electric expansion valve of new blower according to the second default degree of supercooling；When than Value is greater than the second preset threshold, when being less than or equal to third predetermined threshold value, in cooling mode, is adjusted according to the first default degree of superheat The aperture of the electric expansion valve of indoor unit presets the aperture that the degree of superheat adjusts the electric expansion valve of new blower according to third；It is making Under heat pattern, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, degree of supercooling tune is preset according to third Save the aperture of the electric expansion valve of new blower；It is in cooling mode, default according to first when ratio is greater than third predetermined threshold value The degree of superheat adjusts the aperture of the electric expansion valve of indoor unit, adjusts the electric expansion valve of new blower according to the 4th default degree of superheat Aperture；In a heating mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, it is default according to the 4th Degree of supercooling adjusts the aperture of the electric expansion valve of new blower；Wherein, the second preset threshold is greater than the first preset threshold, and third is default Threshold value is greater than the second preset threshold；The second default degree of superheat is equal to the first default degree of superheat and adds the first default degree of superheat difference, Third presets the degree of superheat and is equal to the first default degree of superheat plus the second default degree of superheat difference, and the 4th default degree of superheat is equal to first The default degree of superheat presets degree of superheat difference plus third；It is default plus first that second default degree of supercooling is equal to the first default degree of supercooling Degree of supercooling difference, third preset degree of supercooling and are equal to the first default degree of supercooling plus the second default degree of supercooling difference, and the 4th preset Cold degree is equal to the first default degree of supercooling and presets degree of supercooling difference plus third；Second default degree of superheat difference is greater than first and preset Temperature difference, third preset degree of superheat difference and are greater than the second default degree of superheat difference；Second default degree of supercooling difference is greater than first Default degree of supercooling difference, third preset degree of supercooling difference and are greater than the second default degree of supercooling difference.
In this embodiment, when air conditioner is run in a chiller mode, if ratio is greater than the first preset threshold, it is less than or equal to Second preset threshold then adjusts the aperture of the electric expansion valve of indoor unit according to the first default degree of superheat, preset according to first Temperature adjusts the aperture of the electric expansion valve of new blower plus the first default degree of superheat difference；If ratio is greater than the second default threshold Value is less than or equal to third predetermined threshold value, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of supercooling, according to First default degree of supercooling adjusts the aperture of the electric expansion valve of new blower plus the second default degree of supercooling difference；If ratio is greater than the Three preset thresholds then adjust the aperture of the electric expansion valve of indoor unit according to the first default degree of supercooling, according to the first default overheat Degree presets the aperture that degree of superheat difference adjusts the electric expansion valve of new blower plus third；It is run in air conditioner with heating mode When, if ratio is greater than the first preset threshold, it is less than or equal to the second preset threshold, then indoor unit is adjusted according to the first default degree of supercooling Electric expansion valve aperture, the electronics for adjusting new blower plus the first default degree of supercooling difference according to the first default degree of supercooling is swollen The aperture of swollen valve；If ratio is greater than the second preset threshold, it is less than or equal to third predetermined threshold value, then according to the first default degree of supercooling tune The aperture for saving the electric expansion valve of indoor unit adjusts new blower plus the second default degree of supercooling difference according to the first default degree of supercooling Electric expansion valve aperture；If ratio is greater than third predetermined threshold value, the electricity of indoor unit is adjusted according to the first default degree of supercooling The aperture of sub- expansion valve presets the electric expansion valve that degree of supercooling difference adjusts new blower plus third according to the first default degree of supercooling Aperture；Wherein, the first preset threshold is greater than the second preset threshold less than the second preset threshold, third predetermined threshold value；Second is pre- If degree of superheat difference is greater than the first default degree of superheat difference, third presets degree of superheat difference and is greater than the second default degree of superheat difference； Second default degree of supercooling difference is greater than the first default degree of supercooling difference, and third presets degree of supercooling difference and is greater than the second default degree of supercooling Difference.
It is further preferred that control unit 506 is specifically also used to: when ratio is less than or equal to the first preset threshold, Under refrigeration mode, the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In a heating mode, according to One default degree of supercooling adjusts the aperture of the electric expansion valve of indoor unit；When ratio is equal to 1 or 0, in cooling mode, according to the The one default degree of superheat adjusts the aperture of the electric expansion valve of indoor unit；In a heating mode, it is adjusted according to the first default degree of supercooling The aperture of the electric expansion valve of indoor unit.
In this embodiment, when air conditioner is run in a chiller mode, if ratio be less than or equal to the first preset threshold or Ratio is equal to 1 or 0, then the aperture of the electric expansion valve of indoor unit is adjusted according to the first default degree of superheat；In air conditioner to heat When mode operation, if ratio is less than or equal to the first preset threshold or ratio is equal to 1 or 0, according to the first default degree of supercooling tune Save the aperture of the electric expansion valve of indoor unit.
In one embodiment of the invention, it is preferable that total load value is equal to the load value of new wind load value and indoor unit The sum of.
In this embodiment, new wind load value adds the load value of indoor unit to be equal to total load value.
Embodiment according to the third aspect of the invention we, the present invention provides a kind of air conditioners, including as any of the above-described is real The control system of the air conditioner of example offer is provided.
Air conditioner proposed by the present invention, because including the control system of the air conditioner provided such as any of the above-described embodiment, because This, whole beneficial effects with the control system for including the air conditioner provided such as any of the above-described embodiment, herein no longer It states one by one.
In the present invention, the terms such as term " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection；" connected " can be directly connected, It can be indirectly connected through an intermediary.For the ordinary skill in the art, on can understanding as the case may be State the concrete meaning of term in the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (13)

1. a kind of control method of air conditioner, the air conditioner includes indoor unit and new blower, which is characterized in that the controlling party Method includes:
Obtain the new wind load value of the new blower and the total load value of the air conditioner；
Calculate the ratio of the new wind load value Yu the total load value；
The present mode of operation of preset range and the air conditioner where the ratio, control the indoor unit and/or The aperture of the electric expansion valve of the new blower.
2. the control method of air conditioner according to claim 1, which is characterized in that further include:
Obtain the outlet temperature of the heat exchanger of the air conditioner；
According to the outlet temperature and the corresponding saturation temperature of the heat exchanger, calculates the current degree of superheat of the heat exchanger or work as Preceding degree of supercooling；
The aperture of the electric expansion valve is adjusted, until the current degree of superheat or the current degree of supercooling reach the default degree of superheat Or default degree of supercooling.
3. the control method of air conditioner according to claim 2, which is characterized in that described according to pre- where the ratio If the present mode of operation of range and the air conditioner, the electric expansion valve of the indoor unit and/or the new blower is controlled The step of aperture, specifically includes:
It is in cooling mode, pre- according to first when the ratio is greater than the first preset threshold, is less than or equal to the second preset threshold If the degree of superheat adjusts the aperture of the electric expansion valve of the indoor unit, the electricity of the new blower is adjusted according to the second default degree of superheat The aperture of sub- expansion valve；
In a heating mode, the aperture that the electric expansion valve of the indoor unit is adjusted according to the first default degree of supercooling, according to second Default degree of supercooling adjusts the aperture of the electric expansion valve of the new blower；
Wherein, second preset threshold is greater than first preset threshold, and the second default degree of superheat is equal to described first The default degree of superheat adds the first default degree of superheat difference, and the second default degree of supercooling is equal to the described first default degree of supercooling and adds First default degree of supercooling difference.
4. the control method of air conditioner according to claim 3, which is characterized in that further include:
When the ratio is greater than second preset threshold, is less than or equal to third predetermined threshold value, in cooling mode, according to institute The aperture that the first default degree of superheat adjusts the electric expansion valve of the indoor unit is stated, it is described new to preset degree of superheat adjusting according to third The aperture of the electric expansion valve of blower；
In a heating mode, the aperture that the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling, according to Third presets the aperture that degree of supercooling adjusts the electric expansion valve of the new blower；
Wherein, the third predetermined threshold value is greater than second preset threshold, and the third presets the degree of superheat and is equal to described first The default degree of superheat adds the second default degree of superheat difference, and the third is preset degree of supercooling and added equal to the described first default degree of supercooling Second default degree of supercooling difference；
The second default degree of superheat difference is greater than the described first default degree of superheat difference, and the second default degree of supercooling difference is big In the described first default degree of supercooling difference.
5. the control method of air conditioner according to claim 4, which is characterized in that further include:
When the ratio is greater than the third predetermined threshold value, in cooling mode, adjusted according to the described first default degree of superheat The aperture of the electric expansion valve of the indoor unit adjusts opening for the electric expansion valve of the new blower according to the 4th default degree of superheat Degree；
In a heating mode, the aperture that the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling, according to 4th default degree of supercooling adjusts the aperture of the electric expansion valve of the new blower；
Wherein, the 4th default degree of superheat presets degree of superheat difference plus third equal to the described first default degree of superheat, described 4th default degree of supercooling is equal to the described first default degree of supercooling and presets degree of supercooling difference plus third；
The third presets degree of superheat difference and is greater than the described second default degree of superheat difference, and it is big that the third presets degree of supercooling difference In the described second default degree of supercooling difference.
6. the control method of air conditioner according to claim 3, which is characterized in that further include:
When the ratio is less than or equal to first preset threshold, in cooling mode, according to the described first default overheat Degree adjusts the aperture of the electric expansion valve of the indoor unit；
In a heating mode, the aperture of the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling；
When the ratio is equal to 1 or 0, in cooling mode, the indoor unit is adjusted according to the described first default degree of superheat The aperture of electric expansion valve；
In a heating mode, the aperture of the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling.
7. the control method of air conditioner according to any one of claim 1 to 6, which is characterized in that the total load value Equal to the sum of the new wind load value and load value of the indoor unit.
8. a kind of control system of air conditioner, the air conditioner includes indoor unit and new blower, which is characterized in that the control system System includes:
Acquiring unit, for obtaining the new wind load value of the new blower and the total load value of the air conditioner；
Computing unit, for calculating the ratio of the new wind load value Yu the total load value；
Control unit controls institute for the present mode of operation according to preset range and the air conditioner where the ratio State the aperture of the electric expansion valve of indoor unit and/or the new blower.
9. the control system of air conditioner according to claim 8, which is characterized in that further include:
The acquiring unit is also used to obtain the outlet temperature of the heat exchanger of the air conditioner；
The computing unit is also used to calculate the heat exchange according to the outlet temperature and the corresponding saturation temperature of the heat exchanger The current degree of superheat or current degree of supercooling of device；
Described control unit is also used to adjust the aperture of the electric expansion valve, until the current degree of superheat or the current mistake Cold degree reaches the default degree of superheat or default degree of supercooling.
10. the control system of air conditioner according to claim 9, which is characterized in that described control unit is specifically used for:
It is in cooling mode, pre- according to first when the ratio is greater than the first preset threshold, is less than or equal to the second preset threshold If the degree of superheat adjusts the aperture of the electric expansion valve of the indoor unit, the electricity of the new blower is adjusted according to the second default degree of superheat The aperture of sub- expansion valve；
In a heating mode, the aperture that the electric expansion valve of the indoor unit is adjusted according to the first default degree of supercooling, according to second Default degree of supercooling adjusts the aperture of the electric expansion valve of the new blower；
When the ratio is greater than second preset threshold, is less than or equal to third predetermined threshold value, in cooling mode, according to institute The aperture that the first default degree of superheat adjusts the electric expansion valve of the indoor unit is stated, it is described new to preset degree of superheat adjusting according to third The aperture of the electric expansion valve of blower；
In a heating mode, the aperture that the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling, according to Third presets the aperture that degree of supercooling adjusts the electric expansion valve of the new blower；
When the ratio is greater than the third predetermined threshold value, in cooling mode, adjusted according to the described first default degree of superheat The aperture of the electric expansion valve of the indoor unit adjusts opening for the electric expansion valve of the new blower according to the 4th default degree of superheat Degree；
In a heating mode, the aperture that the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling, according to 4th default degree of supercooling adjusts the aperture of the electric expansion valve of the new blower；
Wherein, second preset threshold is greater than first preset threshold, and it is pre- that the third predetermined threshold value is greater than described second If threshold value；
The second default degree of superheat is equal to the described first default degree of superheat and adds the first default degree of superheat difference, and the third is pre- If the degree of superheat, which is equal to the described first default degree of superheat, adds the second default degree of superheat difference, the 4th default degree of superheat is equal to institute It states the first default degree of superheat and presets degree of superheat difference plus third；
The second default degree of supercooling is equal to the described first default degree of supercooling and adds the first default degree of supercooling difference, and the third is pre- If degree of supercooling, which is equal to the described first default degree of supercooling, adds the second default degree of supercooling difference, the 4th default degree of supercooling is equal to institute It states the first default degree of supercooling and presets degree of supercooling difference plus third；
The second default degree of superheat difference is greater than the described first default degree of superheat difference, and it is big that the third presets degree of superheat difference In the described second default degree of superheat difference；
The second default degree of supercooling difference is greater than the described first default degree of supercooling difference, and it is big that the third presets degree of supercooling difference In the described second default degree of supercooling difference.
11. the control system of air conditioner according to claim 9, which is characterized in that described control unit is specifically also used to:
When the ratio is less than or equal to first preset threshold, in cooling mode, according to the described first default overheat Degree adjusts the aperture of the electric expansion valve of the indoor unit；
In a heating mode, the aperture of the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling；
When the ratio is equal to 1 or 0, in cooling mode, the indoor unit is adjusted according to the described first default degree of superheat The aperture of electric expansion valve；
In a heating mode, the aperture of the electric expansion valve of the indoor unit is adjusted according to the described first default degree of supercooling.
12. the control system of the air conditioner according to any one of claim 8 to 11, which is characterized in that the total load Value is equal to the sum of the new wind load value and load value of the indoor unit.
13. a kind of air conditioner, which is characterized in that the control system including the air conditioner as described in any one of claim 8 to 12 System.
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CN110006138A (en) * 2019-03-01 2019-07-12 青岛海尔空调电子有限公司 Prevent the control method and control system of the compressor liquid hammer of air conditioner
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CN111426023A (en) * 2020-04-03 2020-07-17 广东美的暖通设备有限公司 Operation control method, operation control device, multi-split air conditioning system and storage medium
CN111637588A (en) * 2020-05-30 2020-09-08 广东志高暖通设备股份有限公司 Control method of multi-split system
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WO2024045636A1 (en) * 2022-08-27 2024-03-07 广东美的暖通设备有限公司 Temperature adjusting method, electric control box, anti-condensation control method and air conditioner
CN115654704A (en) * 2022-09-30 2023-01-31 宁波奥克斯电气股份有限公司 Control method and control device for optimizing refrigeration effect of fresh air conditioner and fresh air conditioner

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