CN114543173A - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

Info

Publication number
CN114543173A
CN114543173A CN202210179288.8A CN202210179288A CN114543173A CN 114543173 A CN114543173 A CN 114543173A CN 202210179288 A CN202210179288 A CN 202210179288A CN 114543173 A CN114543173 A CN 114543173A
Authority
CN
China
Prior art keywords
indoor
concentration value
air conditioner
disinfection
outdoor temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210179288.8A
Other languages
Chinese (zh)
Other versions
CN114543173B (en
Inventor
卢广宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Original Assignee
Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Hisense Hitachi Air Conditioning System Co Ltd filed Critical Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority to CN202210179288.8A priority Critical patent/CN114543173B/en
Publication of CN114543173A publication Critical patent/CN114543173A/en
Application granted granted Critical
Publication of CN114543173B publication Critical patent/CN114543173B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
    • F24F1/0093—Indoor units, e.g. fan coil units characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
    • 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
    • F24F11/56—Remote control
    • 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
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/30—Velocity
    • 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
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • 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
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • 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

Landscapes

  • 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 indoor unit, which comprises a controller, wherein the controller is configured to: if indoor CO2Concentration value > first set CO2Opening a fresh air port if the concentration value is obtained; if indoor CO2Concentration value less than or equal to first set CO2Judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value or not; if the outdoor PM2.5 concentration value is greater than the first set PM2.5 concentration value, closing the fresh air inlet; if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, judging that the indoor CO is2Whether the concentration value is greater than the second set value CO2A concentration value; if indoor CO2Concentration value > second set CO2Opening a fresh air port if the concentration value is obtained; the indoor unit of the air conditioner not only realizes the introduction of outdoor fresh air, but also avoids outdoor pollutants from influencing the indoor air quality, effectively improves the indoor air quality and improves the use comfort of users.

Description

Indoor unit of air conditioner
Technical Field
The invention relates to the technical field of air conditioning, in particular to an air conditioner indoor unit.
Background
Currently, in a bedroom without a suspended ceiling, a landmaker or a user usually installs a multi-connected wall-mounted unit or a split wall-mounted unit in the bedroom. However, wall hanging machines occupy a large wall space, especially for a Loft apartment, and hidden units have a large disadvantage due to the characteristics of miniaturization and low floor height of house types, so that open installation machines are most preferred by users. The air conditioner indoor unit which is smaller and occupies less wall space compared with a wall hanging machine is more urgently required by users of the Loft apartment.
The traditional wall-mounted wall-hung machine occupies a larger wall space, only has air conditioning functions such as refrigeration, heating, dehumidification and the like, processes indoor air, meets the comfort requirements of users on temperature, humidity and the like, but cannot improve air quality and purify air.
In order to save energy and electricity, the user basically does not open the indoor window, and the use habit of the air conditioner causes poor indoor air quality and CO2The concentration is very high, and the indoor pollutant concentration exceeds standard, seriously harms people's health, has just finished or indoor someone has smoked the threat to people's health more.
In order to improve the indoor air quality, when the indoor air quality is poor, the air conditioner introduces fresh air to improve the indoor air quality.
However, the existing fresh air introducing logic is only used for judging indoor single pollutants, the judging logic is simple, the indoor air quality cannot be effectively improved, and the comfort of a user is poor.
Disclosure of Invention
The invention provides an air conditioner indoor unit, which improves indoor air quality and improves user comfort.
In order to achieve the purpose, the invention adopts the following technical scheme:
the present invention provides an indoor unit of an air conditioner, comprising:
the air conditioner comprises a shell, a fan blade and a fan blade, wherein an air duct is formed in the shell;
a controller configured to:
determination of indoor CO2Whether the concentration value is greater than the first set CO2A concentration value; if indoor CO2Concentration value > first set CO2Opening a fresh air port if the concentration value is obtained; if indoor CO2Concentration value less than or equal to first set CO2Judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value or not;
if the outdoor PM2.5 concentration value is greater than the first set PM2.5 concentration value, closing the fresh air inlet; if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, judging that the indoor CO is in the room2Whether the concentration value is greater than the second set value CO2A concentration value; if indoor CO2Concentration value > second set CO2Opening a fresh air port if the concentration value is obtained;
wherein the second setting CO2Concentration value < first set CO2Concentration values.
In some embodiments of the present application, the controller is further configured to:
if indoor CO2Concentration value less than or equal to second set CO2Judging whether the indoor VOC value is larger than a set VOC value or not;
if the indoor VOC value is larger than the set VOC value, opening a fresh air port; if the indoor VOC value is less than or equal to the set VOC value, judging whether the indoor PM2.5 concentration value is greater than or equal to a second set PM2.5 concentration value, and if the indoor PM2.5 concentration value is greater than or equal to the second set PM2.5 concentration value, opening a fresh air inlet;
wherein the second set PM2.5 concentration value is less than the first set PM2.5 concentration value.
In some embodiments of the present application, the indoor unit of the air conditioner further comprises a PTC electric heater, and the PTC electric heater is disposed in the air duct;
the controller is further configured to:
in the disinfection mode, judging whether the outdoor temperature is less than a first set outdoor temperature;
if the outdoor temperature is less than the first set outdoor temperature, an indoor heat exchanger is adopted for disinfection: controlling the heating operation of the air conditioner, controlling the surface temperature of the indoor heat exchanger to reach the set disinfection temperature, and controlling the operation of the indoor fan;
if the outdoor temperature is more than or equal to the first set outdoor temperature, adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate.
In some embodiments of the present application, the indoor unit of the air conditioner further comprises an anion generator; the controller is further configured to:
in the disinfection mode, the negative ion generator is controlled to operate for a first set time and then is closed, and then whether the outdoor temperature is less than a first set outdoor temperature is judged;
if the outdoor temperature is less than the first set outdoor temperature, an indoor heat exchanger is adopted for disinfection: controlling the heating operation of the air conditioner, controlling the surface temperature of the indoor heat exchanger to reach the set disinfection temperature, and controlling the operation of the indoor fan;
if the outdoor temperature is more than or equal to the first set outdoor temperature, adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate.
In some embodiments of the present application, the controller is further configured to:
after receiving an instruction of entering a disinfection mode, judging whether a fresh air opening is closed;
and if the fresh air opening is closed, entering a disinfection mode.
In some embodiments of the present application, in the sterilization mode, when the indoor heat exchanger is used for sterilization, the wind speed of the indoor fan is less than or equal to the set low wind speed.
In some embodiments of the present application, after the indoor heat exchanger or the PTC electric heater is used for sterilization for the second set time, the sterilization mode is exited, and the indoor unit of the air conditioner is switched back to the operation mode before entering the sterilization mode.
In some embodiments of the present application, after the indoor heat exchanger is used for the second set time of sterilization, the sterilization mode is exited, the wind speed of the indoor fan is not less than the set high wind speed, and the indoor unit of the air conditioner is switched back to the operation mode before entering the sterilization mode.
In some embodiments of the present application, the indoor unit of the air conditioner further comprises a PTC electric heater; the controller is further configured to:
when the fresh air inlet is opened, judging whether the outdoor temperature is less than a second set outdoor temperature;
if the outdoor temperature is less than the second set outdoor temperature, the PTC electric heater is started;
if the outdoor temperature is not less than the second set outdoor temperature, the PTC electric heater is closed;
wherein the second set outdoor temperature is less than the first set outdoor temperature.
In some embodiments of the present application, the indoor unit of an air conditioner further includes:
an air quality detection module arranged at the air return inlet for detecting indoor CO2Concentration value, indoor VOC value, indoor PM2.5 concentration value, and detecting indoor CO2The concentration value, the indoor VOC value, the indoor PM2.5 concentration value are sent to the controller.
Compared with the prior art, the technical scheme of the invention has the following technical effects: the indoor unit of the air conditioner judges the indoor CO2Whether the concentration value is greater than the first set CO2A concentration value; if indoor CO2Concentration value > first set CO2Opening a fresh air port if the concentration value is obtained; if indoor CO2Concentration value less than or equal to first set CO2Judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value or not; if the outdoor PM2.5 concentration value is greater than the first set PM2.5 concentration value, closing the fresh air inlet; if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, judging that the indoor CO is2Whether the concentration value is greater than the second set value CO2A concentration value; if indoor CO2Concentration value > second set CO2Opening a fresh air port if the concentration value is the value; therefore, the indoor unit of the air conditioner of the invention firstly depends on indoor CO2Judging whether to open the fresh air inlet according to the concentration value, judging whether to close the fresh air inlet according to the outdoor PM2.5 concentration value, and then judging whether to close the fresh air inlet according to the indoor CO2Whether the fresh air opening is opened in the concentration value judgment is accurate, outdoor fresh air is introduced, the influence of outdoor pollutants on indoor air quality is avoided, the indoor air quality is effectively improved, smooth breathing and healthy breathing of a user are guaranteed, and the use comfort of the user is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, 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 view of an air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is an electrical control block diagram of an embodiment of an air conditioner indoor unit according to the present invention;
fig. 3 is an electrical control block diagram of another embodiment of an air conditioner indoor unit according to the present invention;
fig. 4 is a flowchart of a control method executed by a controller of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method performed by a controller of an indoor unit of an air conditioner according to another embodiment of the present invention;
fig. 6 is a flowchart of another embodiment of a control method performed by a controller of an indoor unit of an air conditioner according to the present invention;
fig. 7 is a flowchart illustrating a control method performed by a controller of an indoor unit of an air conditioner according to another embodiment of the present invention;
fig. 8 is a flowchart illustrating a control method performed by a controller of an indoor unit of an air conditioner according to another embodiment of the present invention;
fig. 9 is a flowchart illustrating a control method performed by a controller of an indoor unit of an air conditioner according to another embodiment of the present invention;
fig. 10 is a flowchart illustrating a control method performed by a controller of an indoor unit of an air conditioner according to another embodiment of the present invention.
Reference numerals:
10. a housing; 11. and (4) a fresh air port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any 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 cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.
The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. 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 high-temperature and high-pressure liquid-phase refrigerant 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 refrigerating effect by heat exchange 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, an outdoor heat exchanger, and an outdoor fan, the indoor unit of the air conditioner includes portions of an indoor heat exchanger and an indoor fan, and a throttling device (such as a capillary tube or an electronic 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. The air conditioner performs a heating mode when the indoor heat exchanger serves as a condenser, and performs a cooling mode when the indoor heat exchanger serves as an evaporator.
The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein again.
The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the indoor heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger to become cold air which is blown into a room, the evaporated and vaporized refrigerant is compressed by the compressor, is condensed into liquid in a high-pressure environment in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.
The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs the heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.
The indoor unit of the air conditioner in the embodiment includes a housing 10, an indoor heat exchanger, an indoor fan, a controller, and the like, as shown in fig. 1.
A casing 10, in which an air duct is formed, and the casing 10 is provided with a fresh air inlet 11, a return air inlet and an air outlet; the fresh air inlet 11, the return air inlet and the air outlet are communicated with the air duct. The fresh air inlet 11 is communicated with the outdoor space, and the return air inlet and the air outlet are both communicated with the indoor space. The fresh air port 11 is provided with a fresh air valve, the controller controls the operation of the fresh air valve, and the fresh air port 11 is controlled to be opened or closed through the fresh air valve. After the fresh air port 11 is opened, outdoor fresh air can be introduced.
And the indoor heat exchanger is arranged in the air duct.
And the indoor fan is arranged in the air duct, introduces airflow through the fresh air inlet 11 and/or the return air inlet, then passes through the indoor heat exchanger and is sent out through the air outlet.
And a controller for controlling the fresh air valve, the indoor fan and the whole indoor unit, as shown in fig. 2.
The controller is configured to:
determination of indoor CO2Whether the concentration value is greater than the first set CO2A concentration value; if indoor CO2Concentration value > first set CO2Opening a fresh air port if the concentration value is obtained; if indoor CO2Concentration value less than or equal to first set CO2Judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value or not;
if the outdoor PM2.5 concentration value is greater than the first set PM2.5 concentration value, closing the fresh air inlet; if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, judging that the indoor CO is2Whether the concentration value is greater than the second set CO2A concentration value; if indoor CO2Concentration value > second set CO2Opening a fresh air port if the concentration value is obtained;
wherein the second setting is CO2Concentration value < first set CO2Concentration values. For example, first setting CO2Concentration value is 1000PPM, and CO is set at the second2The concentration value was 500 PPM.
Specifically, the controller specifically executes the following steps, as shown in fig. 4.
Step S11: determination of indoor CO2Whether the concentration value is greater than the first set CO2Concentration values.
If indoor CO2Concentration value > first set CO2Concentration value, indicating indoor CO2If the concentration value is very high and the oxygen content of the indoor air is low, which affects the normal breathing of the user, and fresh air must be introduced, step S12 is executed: and opening a fresh air port and introducing outdoor fresh air.
If indoor CO2Concentration value less than or equal to first set CO2Concentration value, indicating indoor CO2The concentration does not affect the normal breathing of the user, step S13 is performed.
Step S13: and judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value.
If the outdoor PM2.5 concentration value > the first set PM2.5 concentration value, step S14 is executed: and closing the fresh air port. I.e. CO in the room2Concentration value less than or equal to first set CO2And when the concentration value is obtained, the outdoor PM2.5 concentration value is obtained, if the outdoor PM2.5 concentration value is larger than the first set PM2.5 concentration value, the outdoor air pollution is serious, the fresh air opening is closed, and the indoor air quality is prevented from being reduced.
If the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, go to step S15.
Step S15: determination of indoor CO2Whether the concentration value is greater than the second set value CO2Concentration values.
If indoor CO2Concentration value > second set CO2A concentration value indicating that the indoor user can breathe normally, but the indoor air quality is not high and is not fresh, step S16 is executed: and opening a fresh air port, introducing outdoor fresh air, and improving the indoor air quality.
If indoor CO2Concentration value less than or equal to second set CO2Concentration value, indicating indoor CO2The concentration is relatively low.
I.e. CO in the room2Concentration value less than or equal to first set CO2When the concentration value is in the process of obtaining the indoor CO again, if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value2Concentration value, if indoor CO2Concentration value > second set CO2And (4) opening a fresh air port and introducing outdoor fresh air when the concentration value indicates that the indoor air is not fresh.
Due to indoor CO2The influence of concentration on human is large, and whether the user breathes smoothly is related, so that indoor CO is obtained firstly2Concentration according to indoor CO2Concentration value and first set CO2Judging whether normal breathing of the user is influenced or not according to the magnitude relation of the concentration values, and judging whether a fresh air port is opened or not; the outdoor PM2.5 concentration represents the outdoor air pollution degree, and has great influence on whether the fresh air inlet is opened, so that the indoor CO is generated2Concentration value less than or equal to first set CO2Concentration valueThen, obtaining the concentration value of outdoor PM2.5, judging whether outdoor air is seriously polluted or not according to the magnitude relation between the concentration value of the outdoor PM2.5 and the concentration value of the first set PM2.5, and judging whether a fresh air inlet is opened or not; when the concentration value of outdoor PM2.5 is less than or equal to the first set concentration value of PM2.5, indoor CO is obtained again2Concentration value according to indoor CO2Concentration value and second set CO2Judging whether the indoor air is fresh or not according to the magnitude relation of the concentration values, and judging whether a fresh air port is opened or not; if indoor CO2Concentration value > second set CO2And (4) opening a fresh air inlet to introduce outdoor fresh air when the concentration value is high.
The indoor unit of the air conditioner of the embodiment, the controller judges the indoor CO2Whether the concentration value is greater than the first set CO2A concentration value; if indoor CO2Concentration value > first set CO2Opening a fresh air port if the concentration value is obtained; if indoor CO2Concentration value less than or equal to first set CO2Judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value or not; if the outdoor PM2.5 concentration value is greater than the first set PM2.5 concentration value, closing the fresh air inlet; if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, judging that the indoor CO is2Whether the concentration value is greater than the second set value CO2A concentration value; if indoor CO2Concentration value > second set CO2Opening a fresh air port if the concentration value is obtained; therefore, the indoor unit of the air conditioner in this embodiment is based on the indoor CO2Judging whether to open the fresh air inlet according to the concentration value, judging whether to close the fresh air inlet according to the outdoor PM2.5 concentration value, and then according to the indoor CO2Whether the fresh air opening is opened in the concentration value judgment is accurate, outdoor fresh air is introduced, the influence of outdoor pollutants on indoor air quality is avoided, the indoor air quality is effectively improved, smooth breathing and healthy breathing of a user are guaranteed, and the use comfort of the user is guaranteed.
To reduce the indoor pollutant concentration and further improve the indoor air quality, in some embodiments of the present application, the controller is further configured to:
if indoor CO2Concentration value less than or equal to second set CO2Judging whether the indoor VOC value is larger than a set VOC value or not; if indoor VOC valueIf the VOC value is higher than the set value, opening a fresh air inlet; and if the indoor VOC value is less than or equal to the set VOC value, judging whether the indoor PM2.5 concentration value is greater than or equal to a second set PM2.5 concentration value, and if the indoor PM2.5 concentration value is greater than or equal to the second set PM2.5 concentration value, opening the fresh air opening.
Wherein the second set PM2.5 concentration value is less than the first set PM2.5 concentration value. For example, a first PM2.5 concentration value was obtained by performing thin film epitaxy at 115 μ g/m, and a second PM2.5 concentration value was obtained by performing thin film epitaxy at 75 μ g/m.
The controller performs the following steps in detail, as shown in fig. 5.
In step S15, it is determined that indoor CO is present2Concentration value less than or equal to second set CO2After concentration value, the indoor CO is illustrated2If the density is relatively low, step S17 is performed.
Step S17: and judging whether the indoor VOC value is larger than a set VOC value or not.
If the indoor VOC value is larger than the set VOC value, the indoor VOC value is higher, and the indoor pollutants exceed the standard, the step S18 is executed: and opening a fresh air port, and introducing outdoor fresh air to reduce the indoor VOC value and improve the indoor air quality.
If the indoor VOC value is less than or equal to the set VOC value, which indicates that the indoor VOC value is low, step S19 is executed.
Step S19: and judging whether the indoor PM2.5 concentration value is larger than or equal to a second set PM2.5 concentration value.
If the indoor PM2.5 concentration value is greater than or equal to the second set PM2.5 concentration value, which indicates that the indoor PM2.5 concentration is relatively high and the indoor pollutants exceed the standard, the step S20 is executed: and opening a fresh air inlet, and introducing outdoor fresh air to reduce the concentration value of indoor PM2.5 and improve the indoor air quality.
CO indoors2Concentration value less than or equal to first set CO2When the concentration value is less than or equal to the first set PM2.5 concentration value, if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, indoor CO2Concentration value less than or equal to second set CO2Detecting the indoor VOC value again, judging whether to open the fresh air inlet according to the magnitude relation between the indoor VOC value and the set VOC value, if the indoor VOC value is less than or equal to the set VOC value, detecting the indoor PM2.5 concentration value again, and judging whether to open the fresh air inlet according to the magnitude relation between the indoor PM2.5 concentration value and the second set PM2.5 concentration value(ii) a And judging whether to open a fresh air inlet according to the indoor VOC value and the indoor PM2.5 concentration value so as to reduce the concentration of indoor pollutants and improve the indoor air quality.
If the indoor VOC value is less than or equal to the set VOC value, i.e., the indoor VOC value is low, e.g., the indoor VOC rating reaches a level of 0 or 1.
If the indoor VOC value > the set VOC value, i.e. the indoor VOC value is higher, e.g. the indoor VOC rating reaches a level of 2 or 3.
In this embodiment, the controller preferentially determines the indoor CO2Concentration of indoor CO2When the concentration value is more than 1000PPM, the fresh air valve is opened, and the fresh air port is opened to introduce outdoor fresh air. When indoor CO2When the concentration value is less than or equal to 1000PPM, judging the concentration value of outdoor PM2.5, when the concentration value of outdoor PM2.5 is greater than 115 mu g/m, indicating that the outdoor air pollution is serious, closing the fresh air valve, closing the fresh air port and not introducing fresh air. When the outdoor PM2.5 concentration value is less than or equal to 115 mu g/m during the cultivation, judging the indoor CO2Concentration value of indoor CO2When the concentration value is more than 500PPM, the fresh air valve is opened, and the fresh air port is opened to introduce outdoor fresh air. When indoor CO2When the concentration value is less than or equal to 500PPM, continuously judging the indoor VOC value, when the indoor VOC value reaches 2-level or 3-level, opening the fresh air valve, and introducing outdoor fresh air. When indoor VOC value reached 0 level or 1 level, judge indoor PM2.5 concentration value, when indoor PM2.5 concentration value is greater than or equal to 75 μ g/m when cultivating, explain indoor someone smoking or have the pollution sources to appear suddenly, the new trend valve was opened this moment, opens the new trend mouth, introduces outdoor new trend.
In order to facilitate the indoor air quality detection, the air conditioner indoor unit further comprises: and an air quality detection module. The air quality detection module is arranged at an air return inlet of the indoor unit and used for detecting indoor CO2Concentration value, indoor VOC value, indoor PM2.5 concentration value. Indoor CO to be detected by air quality detection module2The concentration value, the indoor VOC value and the indoor PM2.5 concentration value are sent to the controller. And the controller controls the switch of the fresh air inlet according to the received numerical value.
The air quality detection module may be a three-in-one module, or the air quality detection module may include a separate CO2Detection unit and VOC detection sheetMeta, PM2.5 detection unit, see fig. 3.
CO2A detection unit for detecting indoor CO2Concentration value, and detecting indoor CO2The concentration value is sent to the controller.
And the VOC detection unit is used for detecting the indoor VOC value and sending the detected indoor VOC value to the controller.
And the PM2.5 detection unit is used for detecting an indoor PM2.5 concentration value and sending the detected indoor PM2.5 concentration value to the controller.
Be provided with temperature detection module and PM2.5 detection module in new wind department.
And the temperature detection module is used for detecting the outdoor temperature and sending the detected outdoor temperature to the controller.
And the PM2.5 detection module is used for detecting the outdoor PM2.5 concentration value and sending the detected outdoor PM2.5 concentration value to the controller.
The indoor unit of the air conditioner has a normal refrigeration and heating mode and a disinfection mode, and can realize the disinfection function. And after receiving the disinfection instruction, the controller controls the indoor unit of the air conditioner to enter a disinfection mode. In the disinfection mode, controlling the surface temperature of the indoor heat exchanger to reach a set disinfection temperature, and disinfecting by using the indoor heat exchanger; sterilization may also be performed using PTC electric heaters. Therefore, in some embodiments of the present application, the air conditioner indoor unit further includes a PTC electric heater; the PTC electric heater is arranged in the air duct, and the PTC electric heater is arranged at the upstream of the indoor heat exchanger, namely, the air flow entering the air duct from the fresh air inlet or/and the return air inlet firstly passes through the PTC electric heater, then passes through the indoor heat exchanger and finally enters the indoor through the air outlet.
To implement the disinfection function, the controller is further configured to perform the following steps, see fig. 6.
Step S21: in the sterilization mode, the outdoor temperature is acquired.
Step S22: and judging whether the outdoor temperature is less than the first set outdoor temperature.
If the outdoor temperature is less than the first set outdoor temperature, indicating that the outdoor temperature is low, step S23 is executed: adopting an indoor heat exchanger for disinfection: the heating operation of the air conditioner is controlled, the surface temperature of the indoor heat exchanger is controlled to reach the set disinfection temperature, and the operation of the indoor fan is controlled. Therefore, when the outdoor temperature is less than the first set outdoor temperature, the indoor heat exchanger is used for high-temperature disinfection.
In the disinfection mode, when the indoor heat exchanger is adopted for disinfection, the wind speed of the indoor fan is less than or equal to the set low wind speed. Namely, when adopting indoor heat exchanger to disinfect, indoor fan low-speed operation, the air current passes indoor heat exchanger at a low speed to the contact time of extension and indoor heat exchanger, in order to fully exchange heat with indoor heat exchanger, promote the air current temperature fast, guarantee the disinfection effect of disinfecting.
If the outdoor temperature is greater than or equal to the first set outdoor temperature, which indicates that the outdoor temperature is high, step S24 is executed: adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate. At this time, the compressor is not operated and the refrigerant is not circulated. Therefore, when the outdoor temperature is not lower than the first set outdoor temperature, the PTC electric heater is used for high-temperature disinfection.
For example, the first set outdoor temperature is 30 ℃ and the set sterilization temperature is 57 ℃. When the outdoor temperature is lower than 30 ℃, the indoor heat exchanger is in heating operation, the surface temperature of the indoor heat exchanger reaches 57 ℃, and the indoor heat exchanger is utilized for high-temperature disinfection, so that high-temperature sterilization and virus killing of indoor air are realized. When the outdoor temperature is higher than or equal to 30 ℃, if the indoor heat exchanger is continuously adopted for heating operation, high-voltage protection can be continuously generated, and the system operation is unstable, so that when the outdoor temperature is higher than or equal to 30 ℃, the PTC electric heater is controlled to be started, the refrigerant system does not work, only the indoor fan operates, the surface temperature of the PTC electric heater reaches 57 ℃, the indoor air can be kept to be heated, the PTC electric heater is used for high-temperature disinfection, and the high-temperature sterilization and virus killing of the indoor air are realized.
Through the design steps S21-S24, in the disinfection mode, when the outdoor temperature is less than the first set outdoor temperature, high-temperature disinfection is carried out by utilizing an indoor heat exchanger; when the outdoor temperature is not lower than the first set outdoor temperature, the PTC electric heater is used for high-temperature disinfection, so that high-temperature disinfection is realized, and the stable operation of the indoor unit of the air conditioner is ensured.
In order to further improve the indoor air quality and realize the air purification function of the air conditioner, the indoor unit of the air conditioner further comprises an anion generator which is arranged at the air outlet. The anion generator is a special device for ionizing air molecules, and has the advantages that the generation amount of anions can be effectively controlled, and the air purification effect is good. In the occasion that the air is not circulated, the anion generator is started to enable the head of a person to be clear, eliminate or lighten the bad feeling of the person, improve the comfort of the person, and meet the requirements of deodorization, mite inhibition, air purification, skin moisture preservation, virus protection, disinfection, static elimination, allergen deactivation and the like in daily life of people.
Therefore, when the indoor unit of the air conditioner is provided with the anion generator, the controller is also configured to:
in the disinfection mode, the negative ion generator is controlled to operate for a first set time and then is closed, and then whether the outdoor temperature is less than a first set outdoor temperature is judged;
if the outdoor temperature is less than the first set outdoor temperature, an indoor heat exchanger is adopted for disinfection: controlling the heating operation of the air conditioner, controlling the surface temperature of the indoor heat exchanger to reach the set disinfection temperature, and controlling the operation of the indoor fan;
if the outdoor temperature is more than or equal to the first set outdoor temperature, adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate.
That is, before step S21 is executed, step S20 also needs to be executed: in the sterilization mode, the anion generator is controlled to be turned off after running for a first set time, and the steps S21 to S24 are performed after the anion generator is turned off, as shown in fig. 7.
In the present embodiment, the first set time is 4 hours. The anion generator can effectively disinfect and purify after running for 4 hours, and has better air purification effect.
The anion generator, the indoor heat exchanger and the PTC electric heater are used for combined sterilization and purification control, so that the surface of the indoor heat exchanger, the indoor air and the like can be sterilized and virus can be killed in a multi-level and all-round mode, the indoor air quality is improved, and the comfort of users is guaranteed.
To save energy, reduce consumption, and further improve indoor air quality, the controller is further configured to: after receiving an instruction of entering a disinfection mode, judging whether a fresh air opening is closed; and if the fresh air opening is closed, entering a disinfection mode.
The controller comprises the following steps, which are shown in fig. 8.
Step S31: the controller receives an instruction to enter a disinfection mode.
Step S32: and after receiving the instruction of entering the disinfection mode, the controller judges whether the fresh air opening is closed.
If the fresh air opening is opened, the sterilization mode is not entered.
If the fresh air opening is closed, the step S33 is executed: a disinfection mode is entered. In the disinfection mode, steps S20-S24 are executed, and the negative ion generator, the indoor heat exchanger and the PTC electric heater are utilized to carry out combined sterilization and disinfection.
When the fresh air opening is opened, outdoor fresh air enters to influence the disinfection and sterilization effect on the indoor space, so that the fresh air opening only enters into the disinfection mode after being closed to ensure the disinfection effect and save energy.
In order to ensure the disinfection effect, the indoor heat exchanger or the PTC electric heater must reach a certain disinfection duration, so after the indoor heat exchanger or the PTC electric heater is disinfected for a second set time (i.e. the surface temperature of the indoor heat exchanger or the PTC electric heater keeps the set disinfection temperature for the second set time), the disinfection mode is exited, the indoor unit of the air conditioner is switched back to the operation mode before entering the disinfection mode, and the air conditioner continues to operate.
In some embodiments of the present application, in the disinfection mode, if the indoor heat exchanger is used for disinfection, after the indoor heat exchanger is disinfected for a second set time, the disinfection mode is exited, the air speed of the indoor fan is greater than or equal to the set high air speed, so as to ensure that the refrigerant circulation is stable, and the indoor unit of the air conditioner is switched back to the operation mode before entering the disinfection mode. Wherein the set high wind speed is greater than the set low wind speed.
After the indoor unit of the air conditioner exits the disinfection mode, the rotating speed of the indoor fan is not less than the set high wind speed, namely the indoor fan runs at the high wind speed, so that the pressure of a refrigerant system is increased as soon as possible, the stability of the refrigerant system is ensured, and then the indoor unit of the air conditioner is switched back to the running mode before entering the disinfection mode.
In the present embodiment, the second set time is 0.5 hours. The indoor heat exchanger or the PTC electric heater can be sterilized for 0.5 hour, and then the sterilization can be effectively carried out to kill virus and bacteria.
In addition, by designing the PTC electric heater, fresh air can be preheated when outdoor fresh air is introduced, and thus, the controller is also configured to perform the following steps, as shown in fig. 9.
Step S41: and when the fresh air opening is opened, acquiring the outdoor temperature, and judging whether the outdoor temperature is less than a second set outdoor temperature.
If the outdoor temperature is less than the second set outdoor temperature, step S42 is performed: the indoor fan operates, and the aviation baffle of air outlet department is opened, opens PTC electric heater, preheats the new trend of introducing, prevents that indoor temperature from producing great fluctuation.
If the outdoor temperature is greater than or equal to the second set outdoor temperature, the step S43 is executed: indoor fan operation, the aviation baffle of air outlet department is opened, closes PTC electric heater, does not preheat the new trend, prevents the energy waste.
Wherein the second set outdoor temperature is less than the first set outdoor temperature. For example, the second set outdoor temperature is 0 ℃ and the first set outdoor temperature is 30 ℃.
When introducing outdoor fresh air, when the fresh air temperature is less than 0 ℃, open PTC electric heater and preheat the fresh air, the air current after preheating passes through indoor heat exchanger again, has reduced to cause undulant to indoor temperature when the fresh air introduces winter for indoor temperature is steady, has fresh air to get into the room again, avoids CO2The concentration exceeds the comfort standard, and the user in the room feels more comfortable.
Next, the procedure of performing combined sterilization and disinfection by using the negative ion generator, the indoor heat exchanger, and the PTC electric heater will be described in detail by using an embodiment, which is shown in fig. 10.
A disinfection button is arranged on a control panel of an indoor unit of the air conditioner or a remote controller, and a user presses the disinfection button to send an instruction for entering a disinfection mode to a controller of the indoor unit.
Step S51: the controller receives an instruction to enter a disinfection mode.
Step S52: and after receiving the instruction of entering the disinfection mode, the controller judges whether the fresh air opening is closed.
If the fresh air opening is not closed, the sterilization mode is not entered, and the step S53 is executed: and acquiring the outdoor temperature, and judging whether the outdoor temperature is less than a second set outdoor temperature. In the present embodiment, the second set outdoor temperature is 0 ℃.
If the outdoor temperature is less than the second set outdoor temperature, step S54 is performed: the indoor fan operates, and the aviation baffle is opened, opens PTC electric heater, preheats the new trend of introducing, prevents that indoor temperature from producing great fluctuation.
If the outdoor temperature is greater than or equal to the second set outdoor temperature, the step S55 is executed: the indoor fan operates, and the aviation baffle is opened, closes PTC electric heater, does not preheat the new trend, prevents the energy waste.
If the fresh air opening is closed, entering a disinfection mode, and executing the step S56: and controlling the negative ion generator to operate for a first set time.
Step S57: the negative ion generator is turned off after running for a first set time, and the outdoor temperature is acquired after the negative ion generator is turned off, and whether the outdoor temperature is less than the first set outdoor temperature or not is judged. In the present embodiment, the first set outdoor temperature is 30 ℃.
If the outdoor temperature is less than the first set outdoor temperature, step S58 is performed: adopting an indoor heat exchanger for disinfection: and controlling the heating operation of the air conditioner, controlling the surface temperature of the indoor heat exchanger to reach the set disinfection temperature, and controlling the operation of the indoor fan, wherein the wind speed of the indoor fan is less than or equal to the set low wind speed. Therefore, when the outdoor temperature is less than the first set outdoor temperature, the indoor heat exchanger is used for high-temperature disinfection.
If the outdoor temperature is greater than or equal to the first set outdoor temperature, the step S59 is executed: adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate.
When the outdoor temperature is less than 30 ℃, the air conditioner is in heating operation, the indoor heat exchanger is used as the high temperature generated by the condenser, when the indoor fan is in breeze or low wind operation, the surface temperature of the indoor heat exchanger is rapidly increased to 57 ℃, and the operation lasts for 30 minutes to kill attached viruses and bacteria, so that the disinfection effect is achieved.
When the outdoor temperature is higher than 30 ℃, the air conditioner stops heating, the indoor fan operates, the PTC electric heater is started, the surface temperature of the PTC electric heater reaches 57 ℃, and the operation lasts for 30 minutes, so that the high-temperature sterilization and virus killing of the indoor air are realized.
Through design steps S51-S59, after an instruction of entering a disinfection mode is received, if a fresh air port is opened, outdoor fresh air is introduced, whether a PTC electric heater is started to preheat the fresh air or not is judged according to outdoor temperature, and indoor temperature fluctuation is prevented; if the fresh air port is closed, firstly starting the anion generator to sterilize and purify air, and then selecting an indoor heat exchanger or a PTC electric heater to perform high-temperature sterilization according to the outdoor temperature after the anion generator is closed; therefore, the negative ion generator, the indoor heat exchanger and the PTC electric heater are utilized to sterilize, and the indoor air quality is effectively improved.
The air conditioner indoor unit of this embodiment is from taking the new trend to introduce the mouth, has air purification, disinfection function simultaneously, and indoor heat exchanger and PTC electric heater realize 57 ℃ of high temperature sterilization, effectively promote indoor air quality, improve user's travelling comfort. The air conditioner indoor unit of the embodiment overcomes the defects that the traditional wall-mounted air conditioner occupies a large space and cannot improve the air quality by adding the fresh air introducing port.
The air conditioner indoor unit of the embodiment can be arranged indoors in an exposed mode, and indoor air quality is improved. For example, the indoor unit of the air conditioner can be arranged in a bedroom in an exposed mode, and the problems that the bedroom is small in space and an air purifier is not easy to install are solved.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An indoor unit for an air conditioner, comprising:
the air conditioner comprises a shell, a fan blade and a fan blade, wherein an air duct is formed in the shell;
a controller configured to:
determination of indoor CO2Whether the concentration value is greater than the first set CO2A concentration value; if indoor CO2Concentration value > first set CO2Opening a fresh air port if the concentration value is obtained; if indoor CO2Concentration value less than or equal to first set CO2Judging whether the outdoor PM2.5 concentration value is greater than a first set PM2.5 concentration value or not;
if the outdoor PM2.5 concentration value is greater than the first set PM2.5 concentration value, closing the fresh air inlet; if the outdoor PM2.5 concentration value is less than or equal to the first set PM2.5 concentration value, judging that the indoor CO is2Whether the concentration value is greater than the second set value CO2A concentration value; if indoor CO2Concentration value > second set CO2Opening a fresh air port if the concentration value is obtained;
wherein the second setting CO2Concentration value < first set CO2Concentration values.
2. An indoor unit for an air conditioner according to claim 1, wherein: the controller is further configured to:
if indoor CO2Concentration value less than or equal to the second settingCO2Judging whether the indoor VOC value is larger than a set VOC value or not;
if the indoor VOC value is larger than the set VOC value, opening a fresh air port; if the indoor VOC value is less than or equal to the set VOC value, judging whether the indoor PM2.5 concentration value is greater than or equal to a second set PM2.5 concentration value, and if the indoor PM2.5 concentration value is greater than or equal to the second set PM2.5 concentration value, opening a fresh air inlet;
wherein the second set PM2.5 concentration value is less than the first set PM2.5 concentration value.
3. An indoor unit for an air conditioner according to claim 1, wherein: the indoor unit of the air conditioner also comprises a PTC electric heater which is arranged in the air duct;
the controller is further configured to:
in the disinfection mode, judging whether the outdoor temperature is less than a first set outdoor temperature;
if the outdoor temperature is less than the first set outdoor temperature, an indoor heat exchanger is adopted for disinfection: controlling the heating operation of the air conditioner, controlling the surface temperature of the indoor heat exchanger to reach the set disinfection temperature, and controlling the operation of the indoor fan;
if the outdoor temperature is more than or equal to the first set outdoor temperature, adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate.
4. An indoor unit for an air conditioner according to claim 3, wherein: the indoor unit of the air conditioner also comprises an anion generator; the controller is further configured to:
in the disinfection mode, the negative ion generator is controlled to operate for a first set time and then is closed, and then whether the outdoor temperature is less than a first set outdoor temperature is judged;
if the outdoor temperature is less than the first set outdoor temperature, an indoor heat exchanger is adopted for disinfection: controlling the heating operation of the air conditioner, controlling the surface temperature of the indoor heat exchanger to reach the set disinfection temperature, and controlling the operation of the indoor fan;
if the outdoor temperature is more than or equal to the first set outdoor temperature, adopting a PTC electric heater for disinfection: and starting the PTC electric heater, controlling the surface temperature of the PTC electric heater to reach the set disinfection temperature, and controlling the indoor fan to operate.
5. An indoor unit for an air conditioner according to claim 4, wherein: the controller is further configured to:
after receiving an instruction of entering a disinfection mode, judging whether a fresh air opening is closed;
and if the fresh air opening is closed, entering a disinfection mode.
6. An indoor unit for an air conditioner according to claim 3, wherein: in the disinfection mode, when the indoor heat exchanger is adopted for disinfection, the wind speed of the indoor fan is less than or equal to the set low wind speed.
7. An indoor unit for an air conditioner according to claim 3, wherein: and after the indoor heat exchanger or the PTC electric heater is adopted for disinfection for the second set time, the disinfection mode is exited, and the indoor unit of the air conditioner is switched back to the operation mode before entering the disinfection mode.
8. An indoor unit for an air conditioner according to claim 3, wherein: and after the indoor heat exchanger is adopted for disinfecting for the second set time, the disinfection mode is exited, the wind speed of the indoor fan is not less than the set high wind speed, and the indoor unit of the air conditioner is switched back to the running mode before entering the disinfection mode.
9. An indoor unit for an air conditioner according to claim 1, wherein: the indoor unit of the air conditioner also comprises a PTC electric heater; the controller is further configured to:
when the fresh air inlet is opened, judging whether the outdoor temperature is less than a second set outdoor temperature;
if the outdoor temperature is less than the second set outdoor temperature, the PTC electric heater is started;
if the outdoor temperature is not less than the second set outdoor temperature, the PTC electric heater is closed;
wherein the second set outdoor temperature is less than the first set outdoor temperature.
10. An indoor unit for an air conditioner according to any one of claims 1 to 9, wherein: the indoor unit of the air conditioner further comprises:
an air quality detection module arranged at the air return inlet for detecting indoor CO2Concentration value, indoor VOC value, indoor PM2.5 concentration value, and detecting indoor CO2The concentration value, the indoor VOC value, the indoor PM2.5 concentration value are sent to the controller.
CN202210179288.8A 2022-02-25 2022-02-25 Indoor unit of air conditioner Active CN114543173B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210179288.8A CN114543173B (en) 2022-02-25 2022-02-25 Indoor unit of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210179288.8A CN114543173B (en) 2022-02-25 2022-02-25 Indoor unit of air conditioner

Publications (2)

Publication Number Publication Date
CN114543173A true CN114543173A (en) 2022-05-27
CN114543173B CN114543173B (en) 2023-09-12

Family

ID=81679203

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210179288.8A Active CN114543173B (en) 2022-02-25 2022-02-25 Indoor unit of air conditioner

Country Status (1)

Country Link
CN (1) CN114543173B (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003083593A (en) * 2001-09-12 2003-03-19 Sharp Corp Method for suppressing fungus and air conditioner
JP2003329288A (en) * 2003-05-13 2003-11-19 Sharp Corp Mildew restraining method and air conditioner
CN104296271A (en) * 2014-09-15 2015-01-21 中国建筑科学研究院深圳分院 Active purification type residence fresh air device
CN205279278U (en) * 2015-10-30 2016-06-01 北京环都拓普空调有限公司 Intelligence purifying cabinet formula fresh air ventilator
WO2018018989A1 (en) * 2016-07-25 2018-02-01 邹剑寒 Bicirculating fresh air system and fresh air fan
WO2019137529A1 (en) * 2018-01-12 2019-07-18 青岛海尔空调器有限总公司 Purification module for window type air conditioner, and window type air conditioner
WO2019196015A1 (en) * 2018-04-10 2019-10-17 广东美的制冷设备有限公司 Air purification apparatus and sterilization method therefor
CN111536668A (en) * 2020-05-13 2020-08-14 广东美的制冷设备有限公司 Fresh air control method, air conditioner and readable storage medium
CN111692727A (en) * 2020-03-13 2020-09-22 广东美的制冷设备有限公司 Air conditioner and sterilization control method thereof
CN112178783A (en) * 2020-09-22 2021-01-05 佛山市万物互联科技有限公司 Air conditioner sterilization method and device, air conditioner and storage medium
CN113091246A (en) * 2021-03-25 2021-07-09 青岛海尔空调器有限总公司 Air conditioning system and control method and control system thereof
CN113405231A (en) * 2021-06-25 2021-09-17 海信（山东）空调有限公司 Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium
CN113587218A (en) * 2021-06-23 2021-11-02 青岛海信日立空调系统有限公司 Air conditioning system and air purification control method for air conditioner
WO2021223532A1 (en) * 2020-05-29 2021-11-11 青岛海尔空调电子有限公司 Cooperative control system and method of air conditioner and fresh air ventilator
WO2021227802A1 (en) * 2020-05-13 2021-11-18 广东美的制冷设备有限公司 Air conditioner disinfection method, air conditioner, and readable storage medium

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003083593A (en) * 2001-09-12 2003-03-19 Sharp Corp Method for suppressing fungus and air conditioner
JP2003329288A (en) * 2003-05-13 2003-11-19 Sharp Corp Mildew restraining method and air conditioner
CN104296271A (en) * 2014-09-15 2015-01-21 中国建筑科学研究院深圳分院 Active purification type residence fresh air device
CN205279278U (en) * 2015-10-30 2016-06-01 北京环都拓普空调有限公司 Intelligence purifying cabinet formula fresh air ventilator
WO2018018989A1 (en) * 2016-07-25 2018-02-01 邹剑寒 Bicirculating fresh air system and fresh air fan
WO2019137529A1 (en) * 2018-01-12 2019-07-18 青岛海尔空调器有限总公司 Purification module for window type air conditioner, and window type air conditioner
WO2019196015A1 (en) * 2018-04-10 2019-10-17 广东美的制冷设备有限公司 Air purification apparatus and sterilization method therefor
CN111692727A (en) * 2020-03-13 2020-09-22 广东美的制冷设备有限公司 Air conditioner and sterilization control method thereof
CN111536668A (en) * 2020-05-13 2020-08-14 广东美的制冷设备有限公司 Fresh air control method, air conditioner and readable storage medium
WO2021227802A1 (en) * 2020-05-13 2021-11-18 广东美的制冷设备有限公司 Air conditioner disinfection method, air conditioner, and readable storage medium
WO2021223532A1 (en) * 2020-05-29 2021-11-11 青岛海尔空调电子有限公司 Cooperative control system and method of air conditioner and fresh air ventilator
CN112178783A (en) * 2020-09-22 2021-01-05 佛山市万物互联科技有限公司 Air conditioner sterilization method and device, air conditioner and storage medium
CN113091246A (en) * 2021-03-25 2021-07-09 青岛海尔空调器有限总公司 Air conditioning system and control method and control system thereof
CN113587218A (en) * 2021-06-23 2021-11-02 青岛海信日立空调系统有限公司 Air conditioning system and air purification control method for air conditioner
CN113405231A (en) * 2021-06-25 2021-09-17 海信（山东）空调有限公司 Self-cleaning sterilization control method and device for air conditioner, air conditioner and storage medium

Also Published As

Publication number Publication date
CN114543173B (en) 2023-09-12

Similar Documents

Publication Publication Date Title
CN109237720B (en) Air conditioner method for disinfection, system and air conditioner
CN205783434U (en) A kind of combined air conditioner VMC (Ventilation Mechanical Control System)
US20060288865A1 (en) Method for improving the air quality in the limited space and the equipment using thereof
CN113266928B (en) Purification control method of indoor unit of air conditioner
CN108302716B (en) Control method of air conditioner and air conditioner
CN111457548B (en) Control method of air conditioner and air conditioner
CN111578378A (en) Fresh air conditioning system and control method
CN108266866B (en) Control method of air conditioner and air conditioner
CN113218044A (en) Air conditioner indoor unit, sterilization control method and computer readable storage medium
CN211854229U (en) Vertical cabinet type plasma purification and disinfection air conditioner
CN111623422B (en) Air processor capable of being used as mobile air conditioner
CN114543173B (en) Indoor unit of air conditioner
CN205383685U (en) Multi -functional air conditioner internal unit
JP5462517B2 (en) Device control method and air conditioner employing the same
CN111912076A (en) Air conditioner and control method
CN114704875B (en) Air conditioner and control method thereof
JP2012072945A (en) Humidification device
CN115468291A (en) Air conditioner and control method thereof
JP2019190738A (en) Air environment adjustment device, air environment adjustment system and cooking device
CN217685540U (en) Special integral type dehumidifier of bathing pool rest room that has new trend function of ventilating concurrently
CN116085870A (en) Indoor unit of air conditioner
CN211695170U (en) Air conditioner all-in-one machine
CN212252847U (en) Air treatment equipment
CN213146754U (en) Indoor air conditioner
CN215260166U (en) Heating and purifying air conditioner indoor unit and air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant