CN112815477A - Air conditioner and control method - Google Patents

Air conditioner and control method Download PDF

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Publication number
CN112815477A
CN112815477A CN202110062420.2A CN202110062420A CN112815477A CN 112815477 A CN112815477 A CN 112815477A CN 202110062420 A CN202110062420 A CN 202110062420A CN 112815477 A CN112815477 A CN 112815477A
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China
Prior art keywords
temperature
air conditioner
set temperature
target set
time
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CN202110062420.2A
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Chinese (zh)
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CN112815477B (en
Inventor
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
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • 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 from the current moment to the expected return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the expected set temperature and the expected operation mode; starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment; the current time is the first temperature adjusting time in the temperature adjusting times, and the temperature adjusting times and the predicted return time are the equal difference sequence based on the preset time interval, so that the working capacity of the air conditioner is gradually improved from a low-load state, the temperature requirement when a user returns is met, and meanwhile, the power consumption after the air conditioner is started in advance is reduced.

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 order to improve the comfort of the user when the user goes home, the air conditioner can be started to operate before the user goes home, the indoor temperature is preset, and the user can enjoy comfortable ambient temperature after going home. However, simple early start-up would cause electric energy waste, and would cause discomfort to users when the temperature difference between the indoor and outdoor is large.
Therefore, how to provide an air conditioner capable of reducing power consumption after being started in advance 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 problem of high power consumption after the air conditioner is started in advance in the prior art. 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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user;
when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode;
starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted return 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 control appliance is configured to:
determining the target set temperature at the current moment according to the outdoor temperature, the expected set temperature and the expected operation mode;
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, the outdoor temperature and the predicted operation mode.
In some embodiments of the present application, the air conditioner further comprises a human body detection module, and the controller is further configured to:
if the user is not detected to enter the room at the expected return moment, the air conditioner is enabled to operate according to the target set temperature at the last temperature adjusting moment;
if the user is detected to enter the room at the expected return moment and later, the air conditioner is enabled to continue to operate according to the target set temperature at the last temperature adjusting moment and start to record the operation duration;
and when the operation time reaches a second preset time, enabling the air conditioner to operate based on the expected set temperature.
In some embodiments of the present application, the projected operating modes include a cooling mode and a heating mode, and the controller is further specifically configured to:
if the predicted operation mode is a refrigeration mode, determining the current target according to a formula IThe set temperature is marked, and the formula I is specifically as follows: ts1＝(Ts+Tw)/2+ΔT1；
If the predicted operation mode is a heating mode, determining the target set temperature at the current moment according to a formula II, wherein the formula II specifically comprises the following steps: ts1＝(Ts+Tw)/2-ΔT2；
Wherein, Ts1And the target set temperature at the current moment is set, Ts is the predicted set temperature, Tw is the outdoor temperature, delta T1 is a first preset value, and delta T2 is a second preset value.
In some embodiments of the present application, the controller is further specifically configured to:
if the predicted operation mode is a refrigeration mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula III, wherein the formula III specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2+ΔT1；
If the predicted operation mode is a heating mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula IV, wherein the formula IV specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2-ΔT2；
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.
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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user;
when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode;
starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted return 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, determining the target set temperature at each temperature adjustment time according to the outdoor temperature at the current time, the expected set temperature, and the expected operation mode specifically includes:
determining the target set temperature at the current moment according to the outdoor temperature, the expected set temperature and the expected operation mode;
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, the outdoor temperature and the predicted operation mode.
In some embodiments of the present application, the air conditioner further includes a human body detection module, and the method further includes:
if the user is not detected to enter the room at the expected return moment, the air conditioner is enabled to operate according to the target set temperature at the last temperature adjusting moment;
if the user is detected to enter the room at the expected return moment and later, the air conditioner is enabled to continue to operate according to the target set temperature at the last temperature adjusting moment and start to record the operation duration;
and when the operation time reaches a second preset time, enabling the air conditioner to operate based on the expected set temperature.
In some embodiments of the present application, the predicted operation mode includes a cooling mode and a heating mode, and the target set temperature at the current time is determined according to the outdoor temperature, the predicted set temperature, and the predicted operation mode, and specifically is:
if the predicted operation mode is a refrigeration mode, determining the target set temperature at the current moment according to a first formula, wherein the first formula specifically comprises: ts1＝(Ts+Tw)/2+ΔT1；
If the predicted operation mode is a heating mode, determining the target set temperature at the current moment according to a formula II, wherein the formula II specifically comprises the following steps: ts1＝(Ts+Tw)/2-ΔT2；
Wherein, Ts1And the target set temperature at the current moment is set, Ts is the predicted set temperature, Tw is the outdoor temperature, delta T1 is a first preset value, and delta T2 is a second preset value.
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, the outdoor temperature, and the expected operation mode specifically includes:
if the predicted operation mode is a refrigeration mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula III, wherein the formula III specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2+ΔT1；
If the predicted operation mode is a heating mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula IV, wherein the formula IV specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2-ΔT2；
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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user; when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode; starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment; the current time is the first temperature adjusting time in the temperature adjusting times, and the temperature adjusting times and the predicted return time are an arithmetic sequence based on a preset time interval, so that the working capacity of the air conditioner is gradually improved from a low-load state, and the power consumption after the air conditioner is started in advance is reduced while the temperature requirement when a user returns is met; when the user does not return, the air conditioner is enabled to operate at a low working capacity, so that the energy consumption can be saved while the indoor temperature is maintained; the low working capacity operation is still kept for a period of time after the user returns, discomfort caused by too large indoor and outdoor temperature difference of the user is avoided, and user experience is improved.
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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user;
when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode;
starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted return 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, when the user is not indoors, the air conditioner may be turned on in advance to adjust the indoor temperature, and thus the predicted return time of the user, the predicted set temperature of the air conditioner at the predicted return time, and the predicted operation mode need to be determined. The expected return time, the expected set temperature, and the expected operation mode may be determined based on historical use data of the air conditioner by the user, for example, the user often returns home and turns on the air conditioner for a certain period of time, and the next return time, the set temperature of the air conditioner, and the operation mode of the user may be predicted. In addition, a user may set a timing start-up instruction in advance, where the timing start-up instruction includes a timing start-up time, a setting temperature, and an operation mode, and thus, an expected return time, an expected setting temperature, and an expected operation mode may also be determined according to the timing start-up instruction.
Optionally, when the timed power-on instruction exists, determining the expected return time, the expected set temperature and the expected operation mode based on the timed power-on instruction; when the timed power-on instruction is not present, determining the expected return time, the expected set temperature, and the expected operating mode based on the historical usage data.
Optionally, the set wind speed may be determined according to historical usage data or a timing startup instruction, and a person skilled in the art may also determine other set parameters according to actual needs, which does not affect the protection scope of the present application.
In this embodiment, when the distance from the current time to the predicted return time is a first preset time, the air conditioner needs to be started, the first preset time is divided into a plurality of temperature adjustment times based on the preset number, the current time is a first temperature adjustment time of the temperature adjustment times, each temperature adjustment time and the predicted return time form an arithmetic sequence based on a preset time interval, and then the target set temperature at each temperature adjustment time can be determined according to the outdoor temperature at the current time, the predicted set temperature and the predicted operation mode. The air conditioner is then started based on the expected operating mode, and upon reaching each of the temperature adjustment times, the set temperature of the air conditioner is adjusted based on the target set temperature corresponding to the respective temperature adjustment time. 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 small to large, specifically, the power consumptions of the air conditioners corresponding to the respective target set temperatures and the expected set temperatures are arranged from small to large according to the time sequence, for example, in the cooling mode, the respective target set temperatures and the expected set temperatures are arranged from large to small according to the time sequence; in the heating mode, the target set temperatures and the predicted set temperatures are arranged from small to large, 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.
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, the expected set temperature and the expected operation mode;
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, the outdoor temperature and the predicted operation mode.
In this embodiment, the target set temperature at the current time is determined according to the outdoor temperature, the expected set temperature, and the expected operation mode, the target set temperature is used as the set temperature when the air conditioner is started, and then the target set temperature at each temperature adjustment time after the current time is determined according to the target set temperature, the outdoor temperature, and the expected operation mode at the current time.
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, the predicted set temperature and the predicted operation mode all belong to the protection scope of the present application.
In order to avoid discomfort caused by excessive indoor and outdoor temperature differences when the user returns, in some embodiments of the present application, the air conditioner further includes a human body detection module, and the controller is further configured to:
if the user is not detected to enter the room at the expected return moment, the air conditioner is enabled to operate according to the target set temperature at the last temperature adjusting moment;
if the user is detected to enter the room at the expected return moment and later, the air conditioner is enabled to continue to operate according to the target set temperature at the last temperature adjusting moment and start to record the operation duration;
and when the operation time reaches a second preset time, enabling the air conditioner to operate based on the expected set temperature.
In this embodiment, if it is not detected that the user enters the room at the expected return time, the air conditioner is operated according to the target set temperature at the last temperature adjustment time because the user experience is not affected, thereby reducing the power consumption of the air conditioner. If the user is detected to enter the room at the estimated return time and later, in order to avoid discomfort caused by excessive indoor and outdoor temperature difference when the user returns, the set temperature is not immediately adjusted to the estimated set temperature, the air conditioner is firstly enabled to continue to operate according to the target set temperature at the last temperature adjustment time and starts to record the operation time length, and the air conditioner is enabled to operate based on the estimated set temperature when the operation time length reaches the second preset time length.
Optionally, the human body detection module includes at least one of an internet of things positioning module, a door magnet system, a human detection module, an image recognition module, a voice detection module, and a radar wave detection module.
In order to determine the target set temperature at the exact current time, in some embodiments of the present application, the predicted operating mode includes a cooling mode and a heating mode, and the controller is further specifically configured to:
if the predicted operation mode is a refrigeration mode, determining the target set temperature at the current moment according to a first formula, wherein the first formula specifically comprises: ts1＝(Ts+Tw)/2+ΔT1；
If the predicted operation mode is a heating mode, determining the target set temperature at the current moment according to a formula II, wherein the formula II specifically comprises the following steps: ts1＝(Ts+Tw)/2-ΔT2；
Wherein, Ts1And the target set temperature at the current moment is set, Ts is the predicted set temperature, Tw is the outdoor temperature, delta T1 is a first preset value, and delta T2 is a second preset value.
In this embodiment, the predicted operation mode includes a cooling mode and a heating mode, and the target set temperature at the current time is determined based on the predicted set temperature and the outdoor temperature, so that the air conditioner operates with lower power consumption, and in addition, the Δ T1 is set to reduce the cooling capacity and reduce the power consumption of the air conditioner when the user does not actually arrive at home, and similarly, the Δ T2 is set to reduce the heating capacity and reduce the power consumption of the air conditioner when the user does not actually arrive at home.
It should be noted that the above embodiment is only one specific implementation proposed in the present application, and other ways of determining the target set temperature at the current time according to the outdoor temperature, the predicted set temperature and the predicted operation mode 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:
if the predicted operation mode is a refrigeration mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula III, wherein the formula III specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2+ΔT1；
If the predicted operation mode is a heating mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula IV, wherein the formula IV specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2-ΔT2；
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 temperature is sequentially determined according to a formula three or a formula four, n is sequentially a whole number from 2 to m, and m is the number of temperature adjustment times, for example, if 5 temperature adjustment times are included, then m is 5.
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, the outdoor temperature, and the predicted operation mode 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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user; when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode; starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment; the current time is the first temperature adjusting time in the temperature adjusting times, and the temperature adjusting times and the predicted return time are an arithmetic sequence based on a preset time interval, so that the working capacity of the air conditioner is gradually improved from a low-load state, and the power consumption after the air conditioner is started in advance is reduced while the temperature requirement when a user returns is met; when the user does not return, the air conditioner is enabled to operate at a low working capacity, so that the energy consumption can be saved while the indoor temperature is maintained; the low working capacity operation is still kept for a period of time after the user returns, discomfort caused by too large indoor and outdoor temperature difference of the user is avoided, and user experience is improved.
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. the method includes but is not limited to the following steps:
(1) and learning the living habits of the user, generating preset home-returning starting time and running mode, and setting the temperature. For example: the user often returns home at about 18:00-18:30 afternoon and turns on the air conditioner, and the next approximate starting time of the user, the running mode of starting, the set temperature, the set wind speed and the like are predicted according to the use habits of the user.
(2) The starting time set by the user at regular time, the running mode of starting, the set temperature, the set wind speed and the like.
2. And setting the predicted return time to be ts, and starting to enter the home-start control mode at a time t1 before the time ts, wherein t1 is ts- Δ t1, and Δ t1 is a preset time.
3. Dividing the delta t1 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 t1/n, t3 ═ t2+ Δ t1/n, and t4 ═ t3+ Δ t1/n … … ts.
5. And acquiring the outdoor temperature Tw at the current moment, wherein the predicted set temperature of the air conditioner is Ts.
6. If the predicted operation mode is a cooling mode, the set temperature is adjusted within a preset time period and gradually approaches the predicted set temperature. Setting the refrigerating set temperature of the air conditioner corresponding to the tn moment to be Tsn. (Δ T1 is a preset value, Ts because of cooling operation<Tw)。
(1) Starting the air conditioner at t1 to adjust the current set temperature Ts1＝(Ts+Tw)/2+ΔT1。
(2) Adjusting the current set temperature of the air conditioner at time t2, Ts2＝(Ts1+Ts)/2+ΔT1。
(3) Adjusting the current set temperature of the air conditioner at time t3, Ts3＝(Ts2+Ts)/2+ΔT1。
……
TsnApproaching Ts. The purpose of setting + Δ T1 is to reduce the cooling capacity of the air conditioner when the user is not actually at home, and to reduce energy consumption when maintaining an ambient temperature that meets relative demand.
Wherein the temperature setting range of the air conditioner is TsminTo TsmaxIf Tsn≥TsmaxThen Tsn＝Tsmax。
7. If the predicted operation mode is the heating mode, the set temperature is adjusted within a preset time period to gradually approach the predicted set temperature. Setting the heating set temperature of the air conditioner corresponding to tn as Tsn. (Δ T2 is a preset value, Ts because of cooling operation>Tw)
(1) At time t1, the current set temperature, Ts, of the air conditioner is adjusted1＝(Ts+Tw)/2-ΔT2。
(2) Adjusting the current set temperature of the air conditioner at time t2, Ts2＝(Ts1+Ts)/2-ΔT2。
(3) Adjusting the current set temperature of the air conditioner at the time t3，Ts3＝(Ts2+Ts)/2-ΔT2。
……
TsnApproaching Ts. The purpose of setting-at 2 is to reduce the heating capacity of the air conditioner when the user is not actually at home, and to reduce energy consumption while maintaining an ambient temperature that meets relative requirements.
Wherein the temperature setting range of the air conditioner is TsminTo TsmaxIf Tsn≤TsminThen Tsn＝Tsmin。
8. And (5) reaching the ts moment:
(1) if the user does not arrive at home, the target set temperature Ts at the last temperature adjusting moment is continuously usedmAnd (5) operating.
(2) If the user has arrived at home, use TsmRun at 2 time and then run at Ts set temperature.
The following description is made with reference to specific application scenarios.
Application scenario one
The user usage habits are learned and the expected return time is generated to be 19: 00. The current outdoor temperature is 38 degrees, and the air conditioner is preset to be in 22-degree cooling operation. The set temperature range of the air conditioner is 16-30 degrees, namely TsminTs 16 degrees ═ Tsmax30 degrees. Preset Δ T1 at 1 degree and Δ T2 at 10 minutes.
18: at 30 deg., the air conditioner is set to cooling operation at 30 deg., i.e. (38+22)/2+1 ═ 31>Tsmax。
18: at 35, the air conditioner set temperature is adjusted to 27 degrees, that is, (30+22)/2+1 is 27.
18: at 40, the air conditioner set temperature is adjusted to 25.5 degrees, namely (27+22)/2+1 is 25.5.
18: at 45, the set air conditioner temperature is adjusted to 24.5 degrees, i.e., (25.5+22)/2+1 — 24.75. (actual calculation is 24.75 degrees, Ts is generally rounded or 0.5 degree)
18: at 50, the set air conditioner temperature is adjusted to 24 degrees, namely (24.5+22)/2+1 is 24.25.
18: at time 55, the air conditioner set temperature is adjusted to 24 degrees, i.e., (24+22)/2+ 1-24.
19: when 00 hours, the user does not arrive at home, and the set temperature of the air conditioner is kept at 24 ℃.
19: at time 05, the air conditioner set temperature is kept at 24 ℃.
19:08, the user arrives at home, and the set temperature of the air conditioner is kept at 24 ℃.
19: and at 18, the set temperature of the air conditioner is adjusted to 22 degrees, namely the preset 22-degree cooling operation is carried out.
Application scenario two
The user timed power-on time is 19: 00. The current outdoor temperature is 8 degrees, and the air conditioner is preset to be in heating operation at 24 degrees. The set temperature range of the air conditioner is 16-30 degrees, namely TsminAt 16 degrees Tsmax30 degrees. Preset Δ T2 at 1 degree and Δ T2 at 8 minutes.
18: at 30 deg.C, the air conditioner is set to heat 16 deg.C, i.e. (8+24)/2-1 ═ 15<Tsmin。
18: at 35, the air conditioner set temperature is adjusted to 19 degrees, i.e., (16+24)/2-1 ═ 19.
18: at 40, the set temperature of the air conditioner is adjusted to 20.5 degrees, namely (19+24)/2-1 is 20.5.
18: at 45, the set air conditioner temperature is adjusted to 21 degrees, namely, (20.5+24)/2-1 is 21.25. (actual calculation is 21.25 degrees, Ts is generally rounded or 0.5 degree)
18: at 50, the air conditioner set temperature is adjusted to 21.5 degrees, namely, (21+24)/2-1 is 21.5.
18: at 55, the air conditioner set temperature is adjusted to 22 degrees, namely, (21.5+24)/2-1 is 21.75.
19: when 00 hours, the user does not arrive at home, and the set temperature of the air conditioner is kept at 22 ℃.
19: at time 05, the air conditioner set temperature is kept at 22 ℃.
19:08 when the user arrives at home, the set temperature of the air conditioner is kept at 22 ℃.
19: and 16, adjusting the set temperature of the air conditioner to 24 degrees, namely, performing heating operation at the preset 24 degrees.
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 predicted return time of a user, the predicted set temperature and the predicted operation mode of the air conditioner at the predicted return time according to the historical use data of the air conditioner by the user or the timing starting instruction set by the user;
step S102, when the distance between the current moment and the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature, the predicted set temperature and the predicted operation mode at the current moment;
step S103, starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted return 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, the expected set temperature, and the expected operation mode, specifically:
determining the target set temperature at the current moment according to the outdoor temperature, the expected set temperature and the expected operation mode;
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, the outdoor temperature and the predicted operation mode.
In order to determine an accurate target set temperature at the current time, in some embodiments of the present application, the predicted operation mode includes a cooling mode and a heating mode, and the target set temperature at the current time is determined according to the outdoor temperature, the predicted set temperature, and the predicted operation mode, specifically:
if the predicted operation mode is a refrigeration mode, determining the target set temperature at the current moment according to a first formula, wherein the first formula specifically comprises: ts1＝(Ts+Tw)/2+ΔT1；
If the predicted operation mode is a heating mode, determining the target set temperature at the current moment according to a formula II, wherein the formula II specifically comprises the following steps: ts1＝(Ts+Tw)/2-ΔT2；
Wherein, Ts1And the target set temperature at the current moment is set, Ts is the predicted set temperature, Tw is the outdoor temperature, delta T1 is a first preset value, and delta T2 is a second preset value.
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 determining a target set temperature at each temperature adjustment time other than the current time according to the target set temperature at the current time, the outdoor temperature, and the predicted operation mode specifically includes:
if the predicted operation mode is a refrigeration mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula III, wherein the formula III specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2+ΔT1；
If the predicted operation mode is a heating mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula IV, wherein the formula IV specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2-ΔT2；
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 avoid discomfort caused by excessive indoor and outdoor temperature difference when the user returns, in some embodiments of the present application, the air conditioner further includes a human body detection module, and the method further includes:
if the user is not detected to enter the room at the expected return moment, the air conditioner is enabled to operate according to the target set temperature at the last temperature adjusting moment;
if the user is detected to enter the room at the expected return moment and later, the air conditioner is enabled to continue to operate according to the target set temperature at the last temperature adjusting moment and start to record the operation duration;
and when the operation time reaches a second preset time, enabling the air conditioner to operate based on the expected set temperature.
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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user;
when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode;
starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted return 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 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, the expected set temperature and the expected operation mode;
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, the outdoor temperature and the predicted operation mode.
3. The air conditioner of claim 1, wherein the air conditioner further comprises a human detection module, the controller further configured to:
if the user is not detected to enter the room at the expected return moment, the air conditioner is enabled to operate according to the target set temperature at the last temperature adjusting moment;
if the user is detected to enter the room at the expected return moment and later, the air conditioner is enabled to continue to operate according to the target set temperature at the last temperature adjusting moment and start to record the operation duration;
and when the operation time reaches a second preset time, enabling the air conditioner to operate based on the expected set temperature.
4. The air conditioner of claim 2, wherein the projected operating modes include a cooling mode and a heating mode, the controller further specifically configured to:
if the predicted operation mode is a refrigeration mode, determining the target set temperature at the current moment according to a first formula, wherein the first formula specifically comprises: ts1＝(Ts+Tw)/2+ΔT1；
If the predicted operation mode is a heating mode, determining the target set temperature at the current moment according to a formula II, wherein the formula II specifically comprises the following steps: ts1＝(Ts+Tw)/2-ΔT2；
Wherein, Ts1And the target set temperature at the current moment is set, Ts is the predicted set temperature, Tw is the outdoor temperature, delta T1 is a first preset value, and delta T2 is a second preset value.
5. The air conditioner of claim 4, wherein the controller is further specifically configured to:
if the predicted operation mode is a refrigeration mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula III, wherein the formula III specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2+ΔT1；
If the predicted operation mode is a heating mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula IV, wherein the formula IV specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2-ΔT2；
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 return time of a user, the expected set temperature of the air conditioner at the expected return time and the expected operation mode according to historical use data of the air conditioner by the user or a timed starting instruction set by the user;
when the distance from the current moment to the predicted return moment is a first preset time, determining target set temperatures at all temperature adjusting moments according to the outdoor temperature at the current moment, the predicted set temperature and the predicted operation mode;
starting the air conditioner based on the expected operation mode, and enabling the air conditioner to operate based on each target set temperature at each temperature adjusting moment;
the current time is the first temperature adjusting time of the temperature adjusting times, each temperature adjusting time and the predicted return 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 according to claim 6, wherein the target set temperature at each temperature adjustment time is determined from the outdoor temperature at the current time, the expected set temperature and the expected operation mode, in particular:
determining the target set temperature at the current moment according to the outdoor temperature, the expected set temperature and the expected operation mode;
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, the outdoor temperature and the predicted operation mode.
8. The method of claim 6, wherein the air conditioner further comprises a human detection module, the method further comprising:
if the user is not detected to enter the room at the expected return moment, the air conditioner is enabled to operate according to the target set temperature at the last temperature adjusting moment;
if the user is detected to enter the room at the expected return moment and later, the air conditioner is enabled to continue to operate according to the target set temperature at the last temperature adjusting moment and start to record the operation duration;
and when the operation time reaches a second preset time, enabling the air conditioner to operate based on the expected set temperature.
9. The method according to claim 7, wherein the predicted operation mode comprises a cooling mode and a heating mode, and the target set temperature at the current time is determined based on the outdoor temperature, the predicted set temperature, and the predicted operation mode, and specifically comprises:
if the predicted operation mode is a refrigeration mode, determining the target set temperature at the current moment according to a first formula, wherein the first formula specifically comprises: ts1＝(Ts+Tw)/2+ΔT1；
If the predicted operation mode is a heating mode, determining the target set temperature at the current moment according to a formula II, wherein the formula II specifically comprises the following steps: ts1＝(Ts+Tw)/2-ΔT2；
Wherein, Ts1And the target set temperature at the current moment is set, Ts is the predicted set temperature, Tw is the outdoor temperature, delta T1 is a first preset value, and delta T2 is a second preset value.
10. The method according to claim 9, wherein determining the target set temperature at each temperature adjustment time other than the current time based on the target set temperature at the current time, the outdoor temperature, and the predicted operation mode comprises:
if the predicted operation mode is a refrigeration mode, sequentially determining the current time according to a formula IIIThe third formula is specifically a target set temperature at each other temperature adjustment time: tsn＝(Tsn-1+Ts)/2+ΔT1；
If the predicted operation mode is a heating mode, sequentially determining target set temperatures at all temperature adjusting moments except the current moment according to a formula IV, wherein the formula IV specifically comprises the following steps: tsn＝(Tsn-1+Ts)/2-ΔT2；
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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