CN111854067A - Air conditioner and control method - Google Patents

Air conditioner and control method Download PDF

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Publication number
CN111854067A
CN111854067A CN202010516311.9A CN202010516311A CN111854067A CN 111854067 A CN111854067 A CN 111854067A CN 202010516311 A CN202010516311 A CN 202010516311A CN 111854067 A CN111854067 A CN 111854067A
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China
Prior art keywords
air conditioner
operation mode
temperature
indoor environment
indoor
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Pending
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CN202010516311.9A
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Chinese (zh)
Inventor
马圣全
尹发展
陈建兵
丁帮海
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN202010516311.9A priority Critical patent/CN111854067A/en
Publication of CN111854067A publication Critical patent/CN111854067A/en
Pending legal-status Critical Current

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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a control method, the operation mode of the air conditioner is determined according to the heat preservation of the indoor environment and the temperature of the current indoor environment, the operation mode comprises a first operation mode, a second operation mode, a third operation mode and a fourth operation mode, wherein the first operation mode is that a compressor is operated and an indoor fan is operated according to a first preset air quantity, the second operation mode is that the compressor is stopped and the indoor fan is operated according to the first preset air quantity, the third operation mode is that the compressor is operated and the indoor fan is operated according to a second preset air quantity, the fourth operation mode is that the compressor is stopped and the indoor fan is operated according to the second preset air quantity, the heat preservation is determined according to the change of the indoor environment temperature after the air conditioner is switched from the first operation mode to the second operation mode, the operation mode of the air conditioner is adjusted according to the heat preservation of the indoor environment, thereby the change speed of the indoor environment temperature is slowed down, the use experience of the user is improved.

Description

Air conditioner and control method
Technical Field
The present disclosure relates to the field of air conditioners, and more particularly, to an air conditioner and a control method thereof.
Background
Air conditioners are becoming more widely used in today's society, whether residential, commercial, hospital or research institutes, where air conditioners play a very important role in regulating temperature for these locations, and air conditioners are the most indispensable part in regulating temperature for indoor locations.
At present, in the prior art, generally, when the indoor environment temperature reaches the preset temperature, the air conditioner starts to operate with the external unit, the external unit compressor starts to operate at a constant frequency, the operation of the external unit compressor is stopped until the indoor environment temperature drops or rises to a specified temperature, the external unit compressor is restarted when the indoor environment temperature reaches the preset temperature, and the operation is circulated.
Among the prior art scheme, in the indoor environment that heat preservation is better, indoor ambient temperature changes slowly, and user experience is better, and in the indoor environment that heat preservation is relatively poor, indoor ambient temperature changes greatly, and the user easily feels one cold one hot, experiences relatively poor.
Therefore, how to control the temperature of the indoor environment according to the heat retaining property of the indoor environment, slow down the change speed of the indoor environment temperature, and improve the user experience of the air conditioner has become a technical problem to be solved by technical personnel in the art.
Disclosure of Invention
The invention provides an air conditioner and a control method, which are used for solving the technical problems of flexibly adjusting the operation mode of the air conditioner according to the heat preservation of the indoor environment and improving the use experience of a user.
In an air conditioner provided in a preferred embodiment of the present invention, the air conditioner specifically includes:
The refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates for a condenser and the other operates for the evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
the indoor unit coil temperature sensor is used for detecting the temperature of the indoor unit coil;
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;
the controller is used for determining an operation mode of the air conditioner according to the heat retaining property of the indoor environment and the current indoor environment temperature acquired by the indoor environment temperature sensor and operating the air conditioner based on the operation mode;
the air conditioner comprises an air conditioner body, a first running mode, a second running mode, a third running mode and a fourth running mode, wherein the running modes comprise the first running mode, the second running mode, the third running mode and the fourth running mode, the first running mode is that the compressor runs and the indoor fan runs according to a first preset air volume, the second running mode is that the compressor stops and the indoor fan runs according to the first preset air volume, the third running mode is that the compressor runs and the indoor fan runs according to a second preset air volume, the fourth running mode is that the compressor stops and the indoor fan runs according to the second preset air volume, and the heat preservation performance is determined according to the change situation of the indoor environment temperature of the air conditioner after the first running mode is changed into the second running mode.
In an air conditioner according to a preferred embodiment of the present invention, the heat retaining property includes a first heat retaining property and a second heat retaining property that is better than the first heat retaining property, and the controller is specifically configured to:
and if the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not larger than a first preset threshold value, or the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not smaller than a second preset threshold value, determining that the operation mode is the third operation mode, and operating the air conditioner based on the third operation mode.
In the air conditioner provided in the preferred embodiment of the present invention, the controller is further configured to:
acquiring the temperature of an indoor unit coil pipe acquired by the indoor unit coil pipe temperature sensor when the air conditioner is in the third running mode;
and if the temperature of the coil pipe of the indoor unit is lower than a first preset temperature threshold value or the temperature of the coil pipe of the indoor unit is higher than a second preset temperature threshold value, the air conditioner is switched from the third operation mode to the fourth operation mode, and the air conditioner is operated based on the fourth operation mode.
In the air conditioner provided in the preferred embodiment of the present invention, the controller is further configured to:
if the heat retaining property is the second heat retaining property and the current indoor environment temperature is not greater than the first preset threshold value, or the heat retaining property is the second heat retaining property and the current indoor environment temperature is not less than the second preset threshold value, determining that the operation mode is the second operation mode, and operating the air conditioner based on the second operation mode;
And if the current indoor environment temperature is not less than the third preset threshold value or the current indoor environment temperature is not greater than the fourth preset threshold value, determining that the operation mode is the first operation mode, and operating the air conditioner based on the first operation mode.
In an air conditioner provided in a preferred embodiment of the present invention, the air conditioner is further configured to:
if the air conditioner is switched from the first operation mode to the second operation mode, recording the change duration required by the indoor environment temperature change reaching a preset temperature change value;
and determining the heat insulation according to the comparison result of the change time length and a preset room heat insulation measurement database.
Correspondingly, the embodiment of the invention also provides an air conditioner control method, which is applied to an air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor unit coil pipe temperature sensor, an indoor fan and a controller, and the method comprises the following steps:
determining an operation mode of the air conditioner according to the heat retaining property of the indoor environment and the current indoor environment temperature acquired by the indoor environment temperature sensor, and operating the air conditioner based on the operation mode;
The air conditioner comprises an air conditioner body, a first running mode, a second running mode, a third running mode and a fourth running mode, wherein the running modes comprise the first running mode, the second running mode, the third running mode and the fourth running mode, the first running mode is that the compressor runs and the indoor fan runs according to a first preset air volume, the second running mode is that the compressor stops and the indoor fan runs according to the first preset air volume, the third running mode is that the compressor runs and the indoor fan runs according to a second preset air volume, the fourth running mode is that the compressor stops and the indoor fan runs according to the second preset air volume, and the heat preservation performance is determined according to the change situation of the indoor environment temperature of the air conditioner after the first running mode is changed into the second running mode.
In an air conditioner control method provided in an embodiment of the present application, the heat retaining property includes a first heat retaining property and a second heat retaining property that is better than the first heat retaining property, and the method specifically includes:
and if the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not larger than a first preset threshold value, or the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not smaller than a second preset threshold value, determining that the operation mode is the third operation mode, and operating the air conditioner based on the third operation mode.
In the air conditioner control method provided in the specific embodiment of the present application, the method specifically includes:
acquiring the temperature of an indoor unit coil pipe acquired by the indoor unit coil pipe temperature sensor when the air conditioner is in the third running mode;
and if the temperature of the coil pipe of the indoor unit is lower than a first preset temperature threshold value or the temperature of the coil pipe of the indoor unit is higher than a second preset temperature threshold value, the air conditioner is switched from the third operation mode to the fourth operation mode, and the air conditioner is operated based on the fourth operation mode.
In the air conditioner control method provided in the specific embodiment of the present application, the method further includes:
if the heat retaining property is the second heat retaining property and the current indoor environment temperature is not greater than the first preset threshold value, or the heat retaining property is the second heat retaining property and the current indoor environment temperature is not less than the second preset threshold value, determining that the operation mode is the second operation mode, and operating the air conditioner based on the second operation mode;
and if the current indoor environment temperature is not less than the third preset threshold value or the current indoor environment temperature is not greater than the fourth preset threshold value, determining that the operation mode is the first operation mode, and operating the air conditioner based on the first operation mode.
In the air conditioner control method provided in the specific embodiment of the present application, the method further includes:
if the air conditioner is switched from the first operation mode to the second operation mode, recording the change duration required by the indoor environment temperature change reaching a preset temperature change value;
and determining the heat insulation according to the comparison result of the change time length and a preset room heat insulation measurement database.
Compared with the prior art, the invention has the following technical effects:
the invention discloses an air conditioner and a control method, which are applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor unit coil pipe temperature sensor, an indoor fan and a controller.
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 perspective view showing an external appearance of an air conditioner of an embodiment;
fig. 2 is a circuit diagram showing an outline of the structure of the air conditioner of the embodiment;
fig. 3 is a schematic structural view showing an air conditioner according to a preferred embodiment of the present application;
fig. 4 is a flowchart illustrating an air conditioner control method according to an embodiment of the present application;
fig. 5 is a flowchart illustrating a method for controlling an air conditioner in a cooling mode according to an embodiment of the present disclosure;
fig. 6 is a flowchart illustrating a method for controlling an air conditioner in a heating mode according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram illustrating effects that can be achieved by applying the technical solution of the present application.
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.
As described in the background art, the prior art cannot flexibly adjust the operation mode of the air conditioner according to the heat preservation property of the indoor environment, and is prone to cause a technical problem of unsuitable experience of cold and hot for users.
In order to solve the above problems, a preferred embodiment of the present invention provides an air conditioner, as shown in fig. 3, for flexibly adjusting an operation mode of the air conditioner according to heat preservation of an indoor environment, so as to improve a user experience.
The application protects an air conditioner specifically does:
the refrigerant circulation circuit 301 circulates a refrigerant in a circuit including a compressor, a condenser, an expansion valve, an evaporator, a four-way valve, and a pressure reducer.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. 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 302 is configured to compress a low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas, and discharge the high-temperature and high-pressure refrigerant gas to the condenser.
In a preferred embodiment of the present application, 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 the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the 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.
An outdoor heat exchanger and an indoor heat exchanger 303, one of which operates for the condenser and the other of which operates for the evaporator.
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.
A four-way valve 304 for controlling a flow direction of a refrigerant in the refrigerant circuit to switch between the outdoor heat exchanger and the indoor heat exchanger as the condenser and the evaporator;
The air conditioner 1 shown in fig. 1 includes: the indoor unit 3 is exemplified by an indoor unit (shown in the figure), and the indoor unit is usually mounted on an indoor wall surface WL or the like. For another example, an indoor cabinet (not shown) is also an indoor unit of the indoor unit.
The outdoor unit 2 is generally installed outdoors and used for heat exchange in an indoor environment. In the illustration of fig. 1, the outdoor unit 2 is indicated by a broken line because the outdoor unit 2 is located outdoors on the opposite side of the indoor unit 3 with respect to the wall surface WL.
Fig. 2 shows a circuit configuration of an air conditioner 1, and the air conditioner 1 includes a refrigerant circuit 10, and is capable of executing a vapor compression refrigeration cycle by circulating a refrigerant in the refrigerant circuit 10. The indoor unit 3 and the outdoor unit 2 are connected by a connecting pipe 4 to form a refrigerant circuit 10 in which a refrigerant circulates.
And an indoor ambient temperature sensor 305 for detecting and collecting the indoor ambient temperature.
And the indoor unit coil temperature sensor 306 is used for detecting and acquiring the temperature of the indoor unit coil.
An indoor fan 307 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 308 for determining an operation mode of the air conditioner according to a heat retaining property of an indoor environment and a current indoor environment temperature collected by the indoor environment temperature sensor, and operating the air conditioner based on the operation mode;
The air conditioner comprises an air conditioner body, a first running mode, a second running mode, a third running mode and a fourth running mode, wherein the running modes comprise the first running mode, the second running mode, the third running mode and the fourth running mode, the first running mode is that the compressor runs and the indoor fan runs according to a first preset air volume, the second running mode is that the compressor stops and the indoor fan runs according to the first preset air volume, the third running mode is that the compressor runs and the indoor fan runs according to a second preset air volume, the fourth running mode is that the compressor stops and the indoor fan runs according to the second preset air volume, and the heat preservation performance is determined according to the change situation of the indoor environment temperature of the air conditioner after the first running mode is changed into the second running mode.
As described in the background art, the air conditioner in the prior art does not consider the heat preservation condition of the room, and under the indoor environment with poor heat preservation, the air conditioner in the prior art still executes the conventional temperature control on/off state, that is, the compressor is turned off when the indoor environment temperature reaches the target temperature, and the indoor fan is kept normally on, at this time, if the indoor environment heat preservation is poor and the difference between the indoor environment temperature and the outdoor environment temperature is large, the user feels that the user feels cold and hot.
Specifically, the operation mode of the air conditioner can be flexibly adjusted according to the heat preservation performance of the indoor environment and the current indoor environment temperature.
In order to better mitigate the change of the indoor environment temperature, in the preferred embodiment of the present application, the heat retaining property includes a first heat retaining property and a second heat retaining property which is better than the first heat retaining property, and the controller is specifically configured to:
and if the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not larger than a first preset threshold value, or the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not smaller than a second preset threshold value, determining that the operation mode is the third operation mode, and operating the air conditioner based on the third operation mode.
Specifically, the heat retaining property of the indoor environment may be the ability of the indoor environment to slow down heat exchange between the indoor environment and the outdoor environment, and the higher the heat retaining property is, the slower the temperature change of the indoor environment is.
In this application, consider that the great stability that needs to maintain indoor ambient temperature of the outdoor ambient temperature difference, the air conditioner has two kinds of modes of refrigeration mode and heating mode, and first preset threshold value then is a human comfortable temperature value that sets up under the higher condition of the indoor ambient temperature that also is under the refrigeration mode, and the second preset threshold value then is a human comfortable temperature value that sets up under the lower condition of the indoor ambient temperature that is under the heating mode.
Therefore, when the controller judges that the indoor environment heat preservation performance is first-level heat preservation with poor heat preservation performance and the indoor environment temperature is not larger than a first preset threshold value, or the indoor environment heat preservation performance is first-level heat preservation and the indoor environment temperature is not smaller than a second preset threshold value, the controller starts the third operation mode, the third operation mode is that the compressor normally operates and the indoor fan operates according to second preset air volume, wherein the second preset air volume is one operation air volume which is much lower than that of the indoor fan in a normal state, and the mode mainly plays a role in storing cold or heat on the indoor heat exchanger.
In the third mode, the compressor normally operates to refrigerate or heat, the indoor fan operates with ultralow air volume, the cold or heat produced by the compressor cannot be completely released, the temperature of the indoor unit coil pipe is gradually reduced in the refrigerating mode, the temperature of the indoor unit coil pipe is gradually increased in the heating mode, and the indoor heat exchanger can play a role in storing the cold or heat in the corresponding mode.
In order to better control the indoor heat exchanger to store cold or heat, in the preferred embodiment of the present application, the controller is further specifically configured to:
Acquiring the temperature of an indoor unit coil pipe acquired by the indoor unit coil pipe temperature sensor when the air conditioner is in the third running mode;
and if the temperature of the coil pipe of the indoor unit is lower than a first preset temperature threshold value or the temperature of the coil pipe of the indoor unit is higher than a second preset temperature threshold value, the air conditioner is switched from the third operation mode to the fourth operation mode, and the air conditioner is operated based on the fourth operation mode.
Specifically, when the air conditioner operates in the third mode, the temperature of the indoor unit coil or the indoor unit heat exchanger can be monitored in order to prevent the indoor unit coil or the indoor heat exchanger from being damaged due to excessive cold or heat.
For example, a first preset temperature threshold and a second preset temperature threshold are set for the indoor unit coil, the first preset temperature threshold is set and applied when the air conditioner is in a cooling mode, the second preset temperature threshold is set and applied when the air conditioner is in a heating mode, when the indoor unit coil is lower than the first temperature threshold or higher than the second preset temperature threshold, it is indicated that the indoor unit coil is at risk of being damaged, at this time, the air conditioner is switched from the third mode to the fourth mode to operate, and similarly, the same setting can be performed for the indoor heat exchanger.
The fourth mode is that the compressor is stopped and the indoor fan operates according to the second preset air volume, and the second preset air volume is an ultralow operation air volume, so that the cold or heat stored in the third mode can be slowly sent to the indoor environment by the indoor fan in the fourth mode, and the effect of slowing down the temperature change of the indoor environment is achieved.
It should be noted that, in the above preferred embodiment, the method of storing the cooling capacity or the heat capacity by using the indoor coil or the indoor heat exchanger and adjusting the air conditioner according to different modes is only one specific implementation scheme in the present application, and the methods of storing the cooling capacity and the heat capacity and releasing the cooling capacity and the heat capacity by using other components or according to different modes both belong to the protection scope of the present application.
In order to adjust the air conditioner for better heat preservation of indoor environment, in the preferred embodiment of the present application, the controller is further configured to:
if the heat retaining property is the second heat retaining property and the current indoor environment temperature is not greater than the first preset threshold value, or the heat retaining property is the second heat retaining property and the current indoor environment temperature is not less than the second preset threshold value, determining that the operation mode is the second operation mode, and operating the air conditioner based on the second operation mode;
And if the current indoor environment temperature is not less than the third preset threshold value or the current indoor environment temperature is not greater than the fourth preset threshold value, determining that the operation mode is the first operation mode, and operating the air conditioner based on the first operation mode.
Specifically, if the heat retaining property of the indoor environment is the second heat retaining property with better heat retaining property, and when the indoor environment temperature is reduced to the preset temperature, that is, the first preset threshold value, in the cooling mode, or when the indoor environment temperature is increased to the second preset threshold value, in the heating mode, the normal temperature control shutdown is executed, that is, when the target temperature is reached, the second operation mode in which the air conditioner operation compressor is turned off and the indoor fan operates according to the first preset air volume is executed, and the first preset air volume is also the normally set air volume.
In addition, in the cooling mode, if the current ambient temperature is not less than the third preset threshold, or in the heating mode, the current ambient temperature is not greater than the fourth preset threshold, it indicates that the current indoor ambient temperature has reached the point where the air conditioner needs to be normally turned on, and measures for cooling or heating the indoor environment are performed.
It should be noted that, in the above preferred embodiment, the mode switching of the air conditioner according to the heat insulating property of the indoor environment is only one specific implementation of the present application, and other modes of the air conditioner according to the heat insulating property of the indoor environment are all within the scope of the present application.
In order to better judge the heat preservation performance of the indoor environment, in the preferred embodiment of the present application, the controller is further configured to:
if the air conditioner is switched from the first operation mode to the second operation mode, recording the change duration required by the indoor environment temperature change reaching a preset temperature change value;
and determining the heat insulation according to the comparison result of the change time length and a preset room heat insulation measurement database.
Specifically, the heat retaining property of the indoor environment cannot be obtained by searching data, but a useful result can be obtained only by actually detecting the indoor environment, wherein the change of the indoor environment temperature can intuitively explain the heat retaining property of the indoor environment.
Before detecting the heat retaining property of the indoor place, whether the air conditioner enters the cooling or heating mode for the first time needs to be judged, because the heat retaining property of the indoor place is not always fixed and can have different expressions along with the change of seasons or different time periods in one day, the air conditioner directly enters the cooling or heating mode from the starting, and the air conditioner enters the cooling or heating mode for the first time from other modes.
After the air conditioner is judged to enter the cooling or heating mode for the first time, when the indoor environment temperature is not greater than a first preset threshold value or not less than a second preset threshold value, normal temperature control shutdown is executed, namely the first operation mode is directly switched to the second operation mode, and the change duration required when the indoor environment temperature change value reaches the preset temperature change value is recorded.
Comparing the obtained change duration with a preset room heat preservation measurement database, wherein the database comprises an outdoor environment temperature step condition and an indoor environment temperature step condition, comparing the preset change duration corresponding to different temperature steps of the indoor environment and the outdoor environment in the database with the actually detected change duration to obtain a heat preservation result of the current indoor environment, and storing the result.
If the air conditioner does not enter the cooling or heating mode for the first time, the last saved result is directly applied to adjust the operation mode of the air conditioner.
It should be noted that, in the above preferred embodiment, the heat retaining property of the indoor environment according to the environmental temperature change is only one specific implementation scheme in the present application, and other heat retaining properties determining the indoor environmental temperature according to the environmental temperature are all within the protection scope of the present application.
Through using above technical scheme, come the operational mode of more accurate adjustment air conditioner according to the difference of indoor environment heat insulating ability and indoor ambient temperature's change, for indoor environment regulation temperature, can also effectively slow down indoor ambient temperature's change, reduce the cold one hot use experience of user, improve user's satisfaction.
Corresponding to the air conditioner in the preferred embodiment of the present application, the present application further provides a method for controlling an air conditioner, where the method is applied to an air conditioner including a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor unit coil temperature sensor, an indoor fan, and a controller, and as shown in fig. 4, the method includes the following steps:
step S401, determining an operation mode of the air conditioner according to heat retaining property of an indoor environment and current indoor environment temperature acquired by the indoor environment temperature sensor, and operating the air conditioner based on the operation mode;
the air conditioner comprises an air conditioner body, a first running mode, a second running mode, a third running mode and a fourth running mode, wherein the running modes comprise the first running mode, the second running mode, the third running mode and the fourth running mode, the first running mode is that the compressor runs and the indoor fan runs according to a first preset air volume, the second running mode is that the compressor stops and the indoor fan runs according to the first preset air volume, the third running mode is that the compressor runs and the indoor fan runs according to a second preset air volume, the fourth running mode is that the compressor stops and the indoor fan runs according to the second preset air volume, and the heat preservation performance is determined according to the change situation of the indoor environment temperature of the air conditioner after the first running mode is changed into the second running mode.
Specifically, when the operation mode of the air conditioner is adjusted, the air conditioner is not simply turned on or off by adopting the temperature control in the conventional technology, but is adjusted according to the heat retaining property of the indoor environment and the temperature change of the indoor environment.
In order to more accurately adjust the operation mode of the air conditioner, in this embodiment of the present application, the heat retaining property includes a first heat retaining property and a second heat retaining property that is better than the first heat retaining property, and the method specifically includes:
and if the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not larger than a first preset threshold value, or the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not smaller than a second preset threshold value, determining that the operation mode is the third operation mode, and operating the air conditioner based on the third operation mode.
Specifically, the heat retaining property is a first heat retaining property, and the current indoor environment temperature is not greater than a first preset temperature threshold value, that is, the cooling mode, the first preset threshold value is a target environment temperature in the cooling mode, the heat retaining property is a first heat retaining property, and the current indoor environment temperature is not less than a second preset threshold value, that is, the heating mode, and the second preset threshold value is a target environment temperature in the heating mode.
As shown in fig. 5, in the cooling mode, when the indoor ambient temperature T isroom≤Tset-1, a third operating mode, i.e. the compressor is stopped and the indoor fan is operated at a second preset air flow, wherein Tset-1 is a target environmental temperature, the heating mode is as shown in fig. 6, the second preset air volume is an ultra-low air volume, and the specific air volume value can be flexibly set for different types of air conditioners according to experimental data when the air conditioners leave a factory.
In order to better control the air conditioner, in a specific embodiment of the present application, the method specifically includes:
acquiring the temperature of an indoor unit coil pipe acquired by the indoor unit coil pipe temperature sensor when the air conditioner is in the third running mode;
and if the temperature of the coil pipe of the indoor unit is lower than a first preset temperature threshold value or the temperature of the coil pipe of the indoor unit is higher than a second preset temperature threshold value, the air conditioner is switched from the third operation mode to the fourth operation mode, and the air conditioner is operated based on the fourth operation mode.
Specifically, according to the above description, the air conditioner may be damaged when the air conditioner operates in the third mode for a long time, and therefore, the temperature of the indoor coil needs to be compared with the preset temperature threshold, the first preset temperature threshold and the second preset temperature threshold are respectively set in the cooling mode and the heating mode, so that the temperature of the indoor coil is compared with the preset temperature threshold in different modes, and the fourth operation mode is switched to when the temperature of the indoor coil meets the preset temperature threshold, that is, the compressor is stopped and the indoor fan operates at the second preset air volume, as shown in fig. 5 in the cooling mode, and as shown in fig. 6 in the heating mode.
In order to better adjust the operation mode of the air conditioner according to the indoor heat preservation, in a specific embodiment of the present application, the method further includes:
if the heat retaining property is the second heat retaining property and the current indoor environment temperature is not greater than the first preset threshold value, or the heat retaining property is the second heat retaining property and the current indoor environment temperature is not less than the second preset threshold value, determining that the operation mode is the second operation mode, and operating the air conditioner based on the second operation mode;
and if the current indoor environment temperature is not less than the third preset threshold value or the current indoor environment temperature is not greater than the fourth preset threshold value, determining that the operation mode is the first operation mode, and operating the air conditioner based on the first operation mode.
Specifically, under the refrigeration mode, if the heat insulating ability of indoor environment is the better second heat insulating ability of heat insulating ability and present indoor ambient temperature is not more than first preset threshold, under the heating mode, the heat insulating ability of indoor environment is the second heat insulating ability and present indoor ambient temperature is not less than second preset threshold, then directly carry out normal temperature control and shut down, because under this condition, the heat insulating ability of indoor environment is better, carry out normal control by temperature change shutdown and also can not make the user feel a hot one cold uncomfortable sensation.
It should be noted that, the present application further sets a third preset threshold and a fourth preset threshold, where the third preset threshold is an indoor environment temperature early warning temperature value in a cooling mode, the fourth preset threshold is an indoor environment temperature early warning temperature value in a heating mode, when the indoor environment temperature reaches the third preset threshold or the fourth preset threshold in different modes, the air conditioner is adjusted to the first operation mode, that is, the compressor operates normally and the indoor fan operates according to the first preset air volume, the first operation mode is an appointed operation mode set by the user for the air conditioner,
in order to better judge the heat retaining property of the indoor environment, in the embodiment of the present application, the method further comprises:
if the air conditioner is switched from the first operation mode to the second operation mode, recording the change duration required by the indoor environment temperature change reaching a preset temperature change value:
and determining the heat insulation according to the comparison result of the change time length and a preset room heat insulation measurement database.
Specifically, the heat retaining property of the indoor environment is not fixed, and in a specific application scenario, the heat retaining property of the indoor environment changes at different time periods in a day or along with seasonal changes.
In the application, the heat retaining property of the indoor environment can be comprehensively judged according to the temperature change of the indoor environment and the time required by the temperature change, when the first operation mode is switched to the second operation mode, namely when the indoor environment temperature reaches a preset threshold value, the compressor is turned off for refrigeration or heating, the indoor fan operates according to the first preset air volume, the change duration required when the indoor environment temperature reaches a preset temperature change value under the state is recorded, and the change duration is introduced into a room heat retaining property measurement database for comparison.
The database contains the step condition of outdoor environment temperature and the step condition of indoor environment temperature, and the heat preservation result is also stored.
The results shown in fig. 7 can be obtained by applying the above scheme, wherein the vertical axis represents the indoor environment temperature, the horizontal axis represents the time, and for the indoor environment with poor heat preservation, the segments t0-t1 represent the state after the temperature control is started, the inner machine and the outer machine of the air conditioner are normally operated, the indoor environment temperature gradually decreases, when the temperature decreases to Tset-1, the effect of the ordinary temperature control shutdown control is shown as a segment line t1-t2, the indoor environment temperature rises faster and reaches the temperature control startup condition very quickly, the effect of the special temperature control shutdown control in the technical scheme of the application is shown as a segment line t1-t3, the indoor environment temperature rises slowly and reaches the temperature control startup condition, and when the indoor environment heat preservation is poor, under the control of the ordinary temperature control shutdown mode, a user can feel cold and hot, the special temperature control shutdown mode is adopted, the indoor environment temperature changes slowly, and the user experience is greatly improved.
Through using above technical scheme, come the operational mode of more accurate adjustment air conditioner according to the difference of indoor environment heat insulating ability and indoor ambient temperature's change, for indoor environment regulation temperature, can also effectively slow down indoor ambient temperature's change, reduce the cold one hot use experience of user, improve user's satisfaction.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by hardware, and also by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the implementation scenarios of the present application.
Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present application.
Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above application serial numbers are for description purposes only and do not represent the superiority or inferiority of the implementation scenarios.
The above disclosure is only a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.

Claims (10)

1. A constant speed air conditioner, comprising:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates for a condenser and the other operates for the evaporator;
The four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
the indoor unit coil temperature sensor is used for detecting the temperature of the indoor unit coil;
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;
the controller is used for determining an operation mode of the air conditioner according to the heat retaining property of the indoor environment and the current indoor environment temperature acquired by the indoor environment temperature sensor and operating the air conditioner based on the operation mode;
the air conditioner comprises an air conditioner body, a first running mode, a second running mode, a third running mode and a fourth running mode, wherein the running modes comprise the first running mode, the second running mode, the third running mode and the fourth running mode, the first running mode is that the compressor runs and the indoor fan runs according to a first preset air volume, the second running mode is that the compressor stops and the indoor fan runs according to the first preset air volume, the third running mode is that the compressor runs and the indoor fan runs according to a second preset air volume, the fourth running mode is that the compressor stops and the indoor fan runs according to the second preset air volume, and the heat preservation performance is determined according to the change situation of the indoor environment temperature of the air conditioner after the first running mode is changed into the second running mode.
2. The air conditioner of claim 1, the thermal insulation comprising a first thermal insulation and a second thermal insulation that is better than the first thermal insulation, the controller being configured to:
and if the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not larger than a first preset threshold value, or the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not smaller than a second preset threshold value, determining that the operation mode is the third operation mode, and operating the air conditioner based on the third operation mode.
3. The air conditioner of claim 2, wherein the controller is further specifically configured to:
acquiring the temperature of an indoor unit coil pipe acquired by the indoor unit coil pipe temperature sensor when the air conditioner is in the third running mode;
and if the temperature of the coil pipe of the indoor unit is lower than a first preset temperature threshold value or the temperature of the coil pipe of the indoor unit is higher than a second preset temperature threshold value, the air conditioner is switched from the third operation mode to the fourth operation mode, and the air conditioner is operated based on the fourth operation mode.
4. The air conditioner of claim 1, wherein the controller is further configured to:
If the heat retaining property is the second heat retaining property and the current indoor environment temperature is not greater than the first preset threshold value, or the heat retaining property is the second heat retaining property and the current indoor environment temperature is not less than the second preset threshold value, determining that the operation mode is the second operation mode, and operating the air conditioner based on the second operation mode;
and if the current indoor environment temperature is not less than the third preset threshold value or the current indoor environment temperature is not greater than the fourth preset threshold value, determining that the operation mode is the first operation mode, and operating the air conditioner based on the first operation mode.
5. The air conditioner of claim 1, wherein the controller is further configured to:
if the air conditioner is switched from the first operation mode to the second operation mode, recording the change duration required by the indoor environment temperature change reaching a preset temperature change value;
and determining the heat insulation according to the comparison result of the change time length and a preset room heat insulation measurement database.
6. A control method of an air conditioner is applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor unit coil pipe temperature sensor, an indoor fan and a controller, and is characterized by comprising the following steps:
Determining an operation mode of the air conditioner according to the heat retaining property of the indoor environment and the current indoor environment temperature acquired by the indoor environment temperature sensor, and operating the air conditioner based on the operation mode;
the air conditioner comprises an air conditioner body, a first running mode, a second running mode, a third running mode and a fourth running mode, wherein the running modes comprise the first running mode, the second running mode, the third running mode and the fourth running mode, the first running mode is that the compressor runs and the indoor fan runs according to a first preset air volume, the second running mode is that the compressor stops and the indoor fan runs according to the first preset air volume, the third running mode is that the compressor runs and the indoor fan runs according to a second preset air volume, the fourth running mode is that the compressor stops and the indoor fan runs according to the second preset air volume, and the heat preservation performance is determined according to the change situation of the indoor environment temperature of the air conditioner after the first running mode is changed into the second running mode.
7. The method of claim 6, wherein the insulating properties comprise a first insulating property and a second insulating property that is better than the first insulating property, the method comprising:
and if the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not larger than a first preset threshold value, or the heat preservation performance is the first heat preservation performance and the current indoor environment temperature is not smaller than a second preset threshold value, determining that the operation mode is the third operation mode, and operating the air conditioner based on the third operation mode.
8. The method according to claim 7, characterized in that it comprises in particular:
acquiring the temperature of an indoor unit coil pipe acquired by the indoor unit coil pipe temperature sensor when the air conditioner is in the third running mode;
and if the temperature of the coil pipe of the indoor unit is lower than a first preset temperature threshold value or the temperature of the coil pipe of the indoor unit is higher than a second preset temperature threshold value, the air conditioner is switched from the third operation mode to the fourth operation mode, and the air conditioner is operated based on the fourth operation mode.
9. The method of claim 6, wherein the method further comprises:
if the heat retaining property is the second heat retaining property and the current indoor environment temperature is not greater than the first preset threshold value, or the heat retaining property is the second heat retaining property and the current indoor environment temperature is not less than the second preset threshold value, determining that the operation mode is the second operation mode, and operating the air conditioner based on the second operation mode;
and if the current indoor environment temperature is not less than the third preset threshold value or the current indoor environment temperature is not greater than the fourth preset threshold value, determining that the operation mode is the first operation mode, and operating the air conditioner based on the first operation mode.
10. The method of claim 6, wherein the method further comprises:
if the air conditioner is switched from the first operation mode to the second operation mode, recording the change duration required by the indoor environment temperature change reaching a preset temperature change value;
and determining the heat insulation according to the comparison result of the change time length and a preset room heat insulation measurement database.
CN202010516311.9A 2020-06-09 2020-06-09 Air conditioner and control method Pending CN111854067A (en)

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