CN112815476A - Air conditioner and control method - Google Patents

Air conditioner and control method Download PDF

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Publication number
CN112815476A
CN112815476A CN202110061429.1A CN202110061429A CN112815476A CN 112815476 A CN112815476 A CN 112815476A CN 202110061429 A CN202110061429 A CN 202110061429A CN 112815476 A CN112815476 A CN 112815476A
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Prior art keywords
temperature
current
target set
air conditioner
time
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CN202110061429.1A
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CN112815476B (en
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孙铁军
刘清明
李希志
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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)
  • 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)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a control method, wherein a controller of the air conditioner is configured to comprise: when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner; operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing; the current time is the first temperature adjusting time in the temperature adjusting times, and the temperature adjusting times and the expected leaving time are an arithmetic sequence based on a preset time interval. The set temperature of the air conditioner is gradually equal to the outdoor temperature, so that the air conditioner works in a load-reducing running state, and the automatic shutdown is realized more energy-saving on the basis of not increasing the cost.

Description

Air conditioner and control method
Technical Field
The present disclosure relates to the field of air conditioner control, and more particularly, to an air conditioner and a control method.
Background
The air conditioner is widely applied in daily life, particularly in the field of intelligent home, and along with the gradual improvement of the requirements of users, the air conditioner with intelligent control is favored by more and more users.
In the prior art, the off-home shutdown control has application cases in air conditioner products, but most of the off-home shutdown control depends on the internet of things or sensors to realize related functions, hardware cost needs to be increased, and only the time point when the off-home control happens can be judged and the shutdown action is executed when the off-home control is away from home, so that related energy-saving and comfortable control is lacked
Therefore, how to provide an air conditioner capable of realizing automatic shutdown with more energy saving without increasing the cost is a technical problem to be solved at present.
Disclosure of Invention
The invention provides an air conditioner, which is used for solving the technical problems of high cost and high energy consumption in the prior art of realizing an automatic shutdown mode. The air conditioner includes:
a refrigerant circulation loop, which makes the refrigerant circulate in the loop formed by the compressor, the condenser, the expansion valve and the evaporator;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
an indoor fan for introducing airflow through the suction inlet and sending the airflow out through the outlet after passing through the indoor heat exchanger;
a controller that controls at least the compressor, the expansion valve, and the indoor fan;
the controller is configured to:
determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user;
when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner;
operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted leaving time are an equal difference sequence based on a preset time interval, the target set temperature is the maximum value when the target set temperature is not smaller than the maximum value of a temperature set range of the air conditioner, and the target set temperature is the minimum value when the target set temperature is not larger than the minimum value of the temperature set range.
In some embodiments of the present application, the controller is further configured to:
and if the current temperature adjusting time is not the last temperature adjusting time and the absolute value of the difference between the target set temperature at the current temperature adjusting time and the outdoor temperature is not greater than a preset value, taking the outdoor temperature as the target set temperature at the temperature adjusting time after the current temperature adjusting time.
In some embodiments of the present application, the control appliance is configured to:
determining the target set temperature at the current moment according to the outdoor temperature and the current set temperature;
and determining the target set temperature at each temperature adjusting moment except the current moment according to the target set temperature at the current moment and the outdoor temperature.
In some embodiments of the present application, the control appliance is configured to:
determining the target set temperature at the current moment according to a first formula, wherein the first formula is specifically as follows: ts1＝(Ts+Tw)/2；
Wherein, Ts1And setting the target set temperature at the current moment, wherein Ts is the current set temperature, and Tw is the outdoor temperature.
In some embodiments of the present application, the control appliance is configured to:
sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a second formula, wherein the second formula specifically comprises the following steps: tsn＝(Tsn-1+Tw)/2；
Wherein, TsnFor the target set temperature at each temperature regulation time except the current time, n is sequentially an integer from 2 to m, and m is the temperature regulation timeThe number of times.
Correspondingly, the invention also provides a control method of the air conditioner, which is applied to the air conditioner comprising a refrigerant circulation loop, an outdoor heat exchanger, an indoor fan and a controller, and the method comprises the following steps:
determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user;
when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner;
operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted leaving time are an equal difference sequence based on a preset time interval, the target set temperature is the maximum value when the target set temperature is not smaller than the maximum value of a temperature set range of the air conditioner, and the target set temperature is the minimum value when the target set temperature is not larger than the minimum value of the temperature set range.
In some embodiments of the present application, the method further comprises:
and if the current temperature adjusting time is not the last temperature adjusting time and the absolute value of the difference between the target set temperature at the current temperature adjusting time and the outdoor temperature is not greater than a preset value, taking the outdoor temperature as the target set temperature at the temperature adjusting time after the current temperature adjusting time.
In some embodiments of the present application, determining the target set temperature at each temperature adjustment time according to the outdoor temperature at the current time and the current set temperature at the current time specifically includes:
determining the target set temperature at the current moment according to the outdoor temperature and the current set temperature;
and determining the target set temperature at each temperature adjusting moment except the current moment according to the target set temperature at the current moment and the outdoor temperature.
In some embodiments of the present application, determining the target set temperature at the current time according to the outdoor temperature and the current set temperature specifically includes:
determining the target set temperature at the current moment according to a first formula, wherein the first formula is specifically as follows: ts1＝(Ts+Tw)/2；
Wherein, Ts1And setting the target set temperature at the current moment, wherein Ts is the current set temperature, and Tw is the outdoor temperature.
In some embodiments of the present application, determining the target set temperature at each temperature adjustment time except the current time according to the target set temperature at the current time and the outdoor temperature specifically includes:
sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a second formula, wherein the second formula specifically comprises the following steps: tsn＝(Tsn-1+Tw)/2；
Wherein, TsnAnd sequentially taking the values of n as all integers from 2 to m for the target set temperature at each temperature adjusting moment except the current moment, wherein m is the number of the temperature adjusting moments.
By applying the above technical solution, the controller of the air conditioner is configured to: determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user; when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner; operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing; the current time is the first temperature adjusting time in the temperature adjusting times, and the temperature adjusting times and the expected leaving time are an arithmetic sequence based on a preset time interval. The set temperature of the air conditioner is gradually equal to the outdoor temperature, so that the air conditioner works in the running state of reducing the load, the process saves energy consumption compared with direct shutdown, and the automatic shutdown is realized more energy-saving on the basis of not increasing the cost; and the indoor temperature is gradually equal to the outdoor temperature, when a user leaves home, the temperature difference between the indoor and the outdoor is very small, and the discomfort caused by the overlarge temperature difference between the indoor and the outdoor is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The air conditioner performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator in the present application. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high temperature and high pressure state and discharges the compressed refrigerant gas, the discharged refrigerant gas flows into a condenser, the condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through a condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
As shown in fig. 1, the air conditioner includes:
a refrigerant circulation circuit 100 for circulating a refrigerant in a circuit including a compressor, a condenser, an expansion valve, and an evaporator;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
an indoor fan 200 for introducing an air flow through the suction port and sending out the air flow through the indoor heat exchanger and the discharge port;
a controller 300 controlling at least the compressor, the expansion valve, and the indoor fan 200;
the controller is configured to:
determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user;
when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner;
operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted leaving time are an equal difference sequence based on a preset time interval, the target set temperature is the maximum value when the target set temperature is not smaller than the maximum value of a temperature set range of the air conditioner, and the target set temperature is the minimum value when the target set temperature is not larger than the minimum value of the temperature set range.
In this embodiment, the air conditioner is adjusted before the user leaves the room, so that power consumption is reduced, and therefore the expected leaving time of the user needs to be determined. The expected departure time may be determined based on historical usage data of the air conditioner by the user, for example, the user often turns off the air conditioner and leaves the room for a certain period of time, and the departure time of the next user may be predicted. The user may set a timing shutdown instruction in advance, where the timing shutdown instruction includes timing shutdown time, and therefore, the expected departure time of the user may also be determined according to the timing shutdown instruction.
Optionally, when a timed shutdown instruction exists, the expected departure time is determined based on the timed shutdown instruction, and when the timed shutdown instruction does not exist, the expected departure time is determined based on the historical usage data.
In this embodiment, when the distance from the current time to the expected return time is a first preset time, the set temperature of the air conditioner needs to be adjusted to reduce power consumption. Dividing the first preset time into a plurality of temperature adjusting moments based on a preset number, wherein the current moment is the first temperature adjusting moment in the temperature adjusting moments, each temperature adjusting moment and the expected leaving moment form an equal difference sequence based on a preset time interval, then determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner, when each temperature adjusting moment is reached, enabling the air conditioner to operate based on the target set temperature corresponding to each temperature adjusting moment, and closing the air conditioner at the expected leaving moment. The air conditioner comprises an outdoor temperature sensor, and the outdoor temperature can be acquired based on the outdoor temperature sensor.
In this embodiment, the power consumptions of the air conditioners corresponding to the respective items in the difference sequence are arranged from large to small, specifically, the power consumptions of the air conditioners corresponding to the respective target set temperatures are arranged from large to small according to the time sequence, for example, in the cooling mode, the respective target set temperatures are arranged from small to large according to the time sequence; in the heating mode, the target set temperatures are arranged from large to small, so that the energy consumption of the air conditioner can be reduced.
In addition, the air conditioner has a temperature setting range beyond which the target setting temperature cannot exceed, and therefore, the target setting temperature is the maximum value at not less than the maximum value of the temperature setting range, and the target setting temperature is the minimum value at not more than the minimum value of the temperature setting range. Optionally, in consideration of actual needs, the target set temperature that is not an integral multiple of 0.5 degrees is adjusted to a set temperature that is an integral multiple of 0.5 degrees, which makes the air conditioner lower in power consumption.
In order for the air conditioner to operate reliably, in some embodiments of the present application, the controller is further configured to:
and if the current temperature adjusting time is not the last temperature adjusting time and the absolute value of the difference between the target set temperature at the current temperature adjusting time and the outdoor temperature is not greater than a preset value, taking the outdoor temperature as the target set temperature at the temperature adjusting time after the current temperature adjusting time.
In this embodiment, when the absolute value of the difference between the target set temperature and the outdoor temperature at the current temperature adjustment time is not greater than the preset value, since the indoor temperature cannot be made higher than the outdoor temperature during the cooling operation and the indoor temperature cannot be made lower than the outdoor temperature during the heating operation, the outdoor temperature is taken as the target set temperature at the next temperature adjustment time and is not adjusted any more. For example, during cooling operation, if the difference between the outdoor temperature and the target set temperature is not greater than 1 degree, the outdoor temperature is set as the target set temperature at the next temperature adjustment time; and in the heating operation, if the difference value obtained by subtracting the outdoor temperature from the target set temperature is not more than 1 degree, taking the outdoor temperature as the target set temperature at the next temperature adjusting moment.
For reliable determination of the respective target set temperatures, in some embodiments of the present application, the controller is configured to:
determining the target set temperature at the current moment according to the outdoor temperature and the current set temperature;
and determining the target set temperature at each temperature adjusting moment except the current moment according to the target set temperature at the current moment and the outdoor temperature.
In this embodiment, the target set temperature at the current time is determined according to the outdoor temperature and the current set temperature, and then the target set temperatures at the temperature adjustment times other than the current time are sequentially determined according to the target set temperature at the current time and the outdoor temperature.
It should be noted that the above embodiment is only one specific implementation solution proposed in the present application, and other ways of determining each target set temperature according to the outdoor temperature and the current set temperature all belong to the protection scope of the present application.
In order to determine the target set temperature at the exact current time, in some embodiments of the present application, the controller is configured to:
determining the target set temperature at the current moment according to a first formula, wherein the first formula is specifically as follows: ts1＝(Ts+Tw)/2；
Wherein, Ts1And setting the target set temperature at the current moment, wherein Ts is the current set temperature, and Tw is the outdoor temperature.
In this embodiment, half of the sum of the outdoor temperature and the current set temperature is taken as the target set temperature at the current time, so that the power consumption of the air conditioner at the current set temperature is reduced.
It should be noted that the above embodiment is only one specific implementation solution proposed in the present application, and other ways of determining the target set temperature at the current time according to the outdoor temperature and the current set temperature all belong to the protection scope of the present application.
In order to determine an accurate target set temperature at each temperature adjustment time other than the current time, in some embodiments of the present application, the controller is further specifically configured to:
sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a second formula, wherein the second formula specifically comprises the following steps: tsn＝(Tsn-1+Tw)/2；
Wherein, TsnAnd sequentially taking the values of n as all integers from 2 to m for the target set temperature at each temperature adjusting moment except the current moment, wherein m is the number of the temperature adjusting moments.
In this embodiment, the corresponding target set temperatures are sequentially determined according to the formula two, n is sequentially a whole number from 2 to m, and m is the number of temperature adjustment times, for example, if 4 temperature adjustment times are included, then m is 4.
It should be noted that the above embodiment is only one specific implementation solution proposed in the present application, and other ways of determining the target set temperature at each temperature adjustment time except the current time according to the target set temperature at the current time and the outdoor temperature all belong to the protection scope of the present application.
By applying the above technical solution, the controller of the air conditioner is configured to: determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user; when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner; operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing; the current time is the first temperature adjusting time in the temperature adjusting times, and the temperature adjusting times and the expected leaving time are an arithmetic sequence based on a preset time interval. The set temperature of the air conditioner is gradually equal to the outdoor temperature, so that the air conditioner works in the running state of reducing the load, and the process saves energy consumption compared with the process of directly shutting down the air conditioner; and the indoor temperature is gradually equal to the outdoor temperature, when a user leaves home, the temperature difference between the indoor and the outdoor is very small, and the discomfort caused by the overlarge temperature difference between the indoor and the outdoor is avoided.
In order to further illustrate the technical idea of the present invention, the technical solution of the present invention will now be described with reference to specific application scenarios.
The embodiment of the invention provides a control method of an air conditioner, which comprises the following steps:
1. obtaining the expected departure time of the user by the following ways:
(1) and learning the living habits of the user and generating preset off-home shutdown time.
For example: the user often turns off the air conditioner for working at about 7:00-7:30 in the morning, and the next approximate turn-off time of the user is predicted according to the use habit of the user.
(2) And the user regularly sets the shutdown time.
2. And setting the expected leaving time as ts, and starting to enter a leaving-the-home-appliance control mode at a time t1 before the time ts, wherein t1 is ts- Δ t, and Δ t is a preset time.
3. Dividing the delta t into n parts, wherein n is a preset value.
4. From time t1 to time ts, the signals are divided into t1, t2, t1+ Δ t/n, t3, t2+ Δ t/n, and t4, t3+ Δ t/n … … ts.
5. And acquiring the current outdoor temperature Tw, wherein the current air conditioner set temperature is Ts.
6. The set temperature is adjusted within a preset time period to gradually approach the outdoor temperature. Setting the temperature setting of the air conditioner corresponding to tn to Tsn。
(1) At time t1, the current set temperature, Ts, of the air conditioner is adjusted1＝(Ts+Tw)/2。
(2) Adjusting the current set temperature of the air conditioner at time t2, Ts2＝(Ts1+Tw)/2。
(3) Adjusting the current set temperature of the air conditioner at time t3, Ts3＝(Ts2+Tw)/2。
……
TsnApproaching Tw.
Wherein, when the set temperature is close to the outdoor environment temperature,
(1) during cooling operation, if TsnWhen the temperature is more than or equal to Tw-1, the set temperature of the air conditioner at the next moment is Tw.
(2) During heating operation, if TsnWhen Tw +1 is not more than, the set temperature of the air conditioner is Tw at the next moment.
When the outdoor environment temperature is greater than the upper limit Ts of the set temperature of the air conditionermaxWhen is, if Tsn≥TsmaxThen Tsn＝Tsmax。
When the outdoor environment temperature is less than the set temperature lower limit Ts of the air conditionerminWhen is, if Tsn≤TsminThen Tsn＝Tsmin。
7. And when the ts moment is reached, the air conditioner executes the shutdown action.
The following description is made with reference to specific application scenarios.
Application scenario one
The user usage habits are learned, and the expected leaving-home time is generated to be 8: 00. The current outdoor temperature is 36 degrees, and the air conditioner is set to 18-degree cooling operation. The set temperature range of the air conditioner is 16-30 degrees, namely TsminAt 16 degrees Tsmax＝30 degrees.
7: at 30, the air conditioner set temperature is adjusted to 27 degrees, that is, (36+18)/2 is 27.
7: at 40 hours, the set temperature of the air conditioner is adjusted to 30 degrees, namely TsmaxBecause (36+27)/2 is 31.5>Tsmax。
7: at 50 deg.C, the set temperature of the air conditioner is adjusted to 30 deg.C, i.e. Tsmax。
8: and when 00, the air conditioner is turned off.
Application scenario two
The timing shutdown time of the user is 8: 10. The current outdoor temperature is 28 degrees, and the air conditioner is set to 20-degree cooling operation. The set temperature range of the air conditioner is 16-30 degrees, namely TsminAt 16 degrees Tsmax30 degrees.
7: at 30, the air conditioner set temperature is adjusted to 23 degrees, namely (28+18)/2 is 23.
7: at 40, the air conditioner set temperature is adjusted to 25.5 degrees, namely (28+23)/2 is 25.5.
7: at 50, the air conditioner set temperature is adjusted to 27 degrees (actually calculated to be 26.75 degrees, and Ts is generally rounded or 0.5 degree), namely, (28+25.5)/2 is 26.75.
8: at time 00, the air conditioner set temperature is adjusted to 28 degrees, namely Tw (Ts is Tw-1 when cooling operation is performed at 7: 50).
8: and when 10, the air conditioner is turned off.
Application scenario three
The user usage habits are learned, and the expected leaving-home time is generated to be 8: 00. The current outdoor temperature is 12 degrees, and the air conditioner is set to 30-degree heating operation. The set temperature range of the air conditioner is 16-30 degrees, namely TsminAt 16 degrees Tsmax30 degrees.
7: at 30, the air conditioner set temperature is adjusted to 21 degrees, namely (12+30)/2 is 21.
7: at 40, the air conditioner set temperature is adjusted to 16.5 degrees, namely (12+21)/2 is 16.5.
7: at 50 hours, the set temperature of the air conditioner is adjusted to 16 degrees, namely TsminBecause (12+16.5)/2 is 14.25<Tsmin。
8: and when 00, the air conditioner is turned off.
Application scenario four
The timing shutdown time of the user is 8: 10. The current outdoor temperature is 17 degrees, and the air conditioner is set to 25 degrees heating operation. The set temperature range of the air conditioner is 16-30 degrees, namely TsminAt 16 degrees Tsmax30 degrees.
7: at 30, the air conditioner set temperature is adjusted to 21 degrees, namely (17+25)/2 is 21.
7: at time 40, the air conditioner set temperature is adjusted to 19 degrees, i.e., (17+ 21)/2-19.
7: at 50, the air conditioner set temperature is adjusted to 18 degrees, namely (17+19)/2 is 18.
8: at time 00, the air conditioner set temperature is adjusted to 17 degrees, namely Tw (Ts is Tw +1 when 7:50 heating operation is performed).
8: and when 10, the air conditioner is turned off.
Corresponding to the air conditioner in the embodiment of the present application, an embodiment of the present application further provides a control method of an air conditioner, which is applied to an air conditioner including a refrigerant circulation loop, an outdoor heat exchanger, an indoor fan, and a controller, as shown in fig. 2, the method includes:
step S101, determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user;
step S102, when the distance between the current moment and the expected leaving moment is a first preset time, determining target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner;
step S103 of operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the expected departure timing;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted leaving time are an equal difference sequence based on a preset time interval, the target set temperature is the maximum value when the target set temperature is not smaller than the maximum value of a temperature set range of the air conditioner, and the target set temperature is the minimum value when the target set temperature is not larger than the minimum value of the temperature set range.
In order to reliably determine each target set temperature, in some embodiments of the present application, the target set temperature at each temperature adjustment time is determined according to the outdoor temperature at the current time and the current set temperature at the current time, specifically:
determining the target set temperature at the current moment according to the outdoor temperature and the current set temperature;
and determining the target set temperature at each temperature adjusting moment except the current moment according to the target set temperature at the current moment and the outdoor temperature.
In order to determine an accurate target set temperature at the current time, in some embodiments of the present application, the determining the target set temperature at the current time according to the outdoor temperature and the current set temperature specifically includes:
determining the target set temperature at the current moment according to a first formula, wherein the first formula is specifically as follows: ts1＝(Ts+Tw)/2；
Wherein, Ts1And setting the target set temperature at the current moment, wherein Ts is the current set temperature, and Tw is the outdoor temperature.
In order to determine the accurate target set temperature at each temperature adjustment time except the current time, the method for determining the target set temperature at each temperature adjustment time except the current time according to the target set temperature at the current time and the outdoor temperature specifically comprises the following steps:
sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a second formula, wherein the second formula specifically comprises the following steps: tsn＝(Tsn-1+Tw)/2；
Wherein, TsnAnd sequentially taking the values of n as all integers from 2 to m for the target set temperature at each temperature adjusting moment except the current moment, wherein m is the number of the temperature adjusting moments.
In order to make the air conditioner operate reliably, in some embodiments of the present application, the method further comprises:
and if the current temperature adjusting time is not the last temperature adjusting time and the absolute value of the difference between the target set temperature at the current temperature adjusting time and the outdoor temperature is not greater than a preset value, taking the outdoor temperature as the target set temperature at the temperature adjusting time after the current temperature adjusting time.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. An air conditioner comprising:
a refrigerant circulation loop, which makes the refrigerant circulate in the loop formed by the compressor, the condenser, the expansion valve and the evaporator;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
an indoor fan for introducing airflow through the suction inlet and sending the airflow out through the outlet after passing through the indoor heat exchanger;
a controller that controls at least the compressor, the expansion valve, and the indoor fan;
wherein the controller is configured to:
determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user;
when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner;
operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted leaving time are an equal difference sequence based on a preset time interval, the target set temperature is the maximum value when the target set temperature is not smaller than the maximum value of a temperature set range of the air conditioner, and the target set temperature is the minimum value when the target set temperature is not larger than the minimum value of the temperature set range.
2. The air conditioner of claim 1, wherein the controller is further configured to:
and if the current temperature adjusting time is not the last temperature adjusting time and the absolute value of the difference between the target set temperature at the current temperature adjusting time and the outdoor temperature is not greater than a preset value, taking the outdoor temperature as the target set temperature at the temperature adjusting time after the current temperature adjusting time.
3. The air conditioner according to claim 1, wherein the control appliance body is configured to:
determining the target set temperature at the current moment according to the outdoor temperature and the current set temperature;
and determining the target set temperature at each temperature adjusting moment except the current moment according to the target set temperature at the current moment and the outdoor temperature.
4. The air conditioner according to claim 3, wherein the control appliance body is configured to:
determining the target set temperature at the current moment according to a first formula, wherein the first formula is specifically as follows: ts1＝(Ts+Tw)/2；
Wherein, Ts1And setting the target set temperature at the current moment, wherein Ts is the current set temperature, and Tw is the outdoor temperature.
5. The air conditioner according to claim 4, wherein the control appliance body is configured to:
sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a second formula, wherein the second formula specifically comprises the following steps: tsn＝(Tsn-1+Tw)/2；
Wherein, TsnAnd sequentially taking the values of n as all integers from 2 to m for the target set temperature at each temperature adjusting moment except the current moment, wherein m is the number of the temperature adjusting moments.
6. A control method of an air conditioner is applied to the air conditioner comprising a refrigerant circulation loop, an outdoor heat exchanger, an indoor fan and a controller, and is characterized by comprising the following steps:
determining the expected departure time of a user according to historical use data of the air conditioner by the user or a timing shutdown instruction set by the user;
when the distance between the current moment and the expected leaving moment is a first preset time, determining the target set temperature of each temperature adjusting moment according to the outdoor temperature at the current moment and the current set temperature of the air conditioner;
operating the air conditioner based on each of the target set temperatures at each of the temperature adjustment timings, and turning off the air conditioner at the estimated departure timing;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted leaving time are an equal difference sequence based on a preset time interval, the target set temperature is the maximum value when the target set temperature is not smaller than the maximum value of a temperature set range of the air conditioner, and the target set temperature is the minimum value when the target set temperature is not larger than the minimum value of the temperature set range.
7. The method of claim 6, wherein the method further comprises:
and if the current temperature adjusting time is not the last temperature adjusting time and the absolute value of the difference between the target set temperature at the current temperature adjusting time and the outdoor temperature is not greater than a preset value, taking the outdoor temperature as the target set temperature at the temperature adjusting time after the current temperature adjusting time.
8. The method according to claim 6, wherein the target set temperature at each temperature adjustment time is determined based on the outdoor temperature at the current time and the current set temperature at the current time, specifically:
determining the target set temperature at the current moment according to the outdoor temperature and the current set temperature;
and determining the target set temperature at each temperature adjusting moment except the current moment according to the target set temperature at the current moment and the outdoor temperature.
9. The method according to claim 8, wherein the target set temperature at the current time is determined according to the outdoor temperature and the current set temperature, and specifically comprises:
determining the target set temperature at the current moment according to a first formula, wherein the first formula is specifically as follows: ts1＝(Ts+Tw)/2；
Wherein, Ts1And setting the target set temperature at the current moment, wherein Ts is the current set temperature, and Tw is the outdoor temperature.
10. The method according to claim 9, wherein the target set temperature at each temperature adjustment time other than the current time is determined according to the target set temperature at the current time and the outdoor temperature, and specifically:
sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a second formula, wherein the second formula specifically comprises the following steps: tsn＝(Tsn-1+Tw)/2；
Wherein, TsnAnd sequentially taking the values of n as all integers from 2 to m for the target set temperature at each temperature adjusting moment except the current moment, wherein m is the number of the temperature adjusting moments.
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