CN113203157B - Air purifier and control method thereof - Google Patents

Air purifier and control method thereof Download PDF

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Publication number
CN113203157B
CN113203157B CN202110047115.6A CN202110047115A CN113203157B CN 113203157 B CN113203157 B CN 113203157B CN 202110047115 A CN202110047115 A CN 202110047115A CN 113203157 B CN113203157 B CN 113203157B
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China
Prior art keywords
air
carbon dioxide
unit
purification
ventilation
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CN202110047115.6A
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Chinese (zh)
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CN113203157A (en
Inventor
金正娥
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LG Electronics Inc
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LG Electronics Inc
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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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • 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
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • 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
    • F24F11/56—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
    • F24F11/56—Remote control
    • F24F11/57—Remote control using telephone networks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/003—Ventilation in combination with air cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • 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
    • F24F8/80—Self-contained air purifiers
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The present invention relates to an air purifier, and an air purifier according to an embodiment of the present invention may include: a comprehensive purification degree sensor part for detecting the comprehensive purification degree of the indoor air; a carbon dioxide sensor unit that detects a carbon dioxide concentration in the indoor air; an air cleaning unit provided with a blower fan and a filter member; and a control unit that controls an operation of the air purification unit based on detection results of the integrated purification degree sensor unit and the carbon dioxide sensor unit. The control unit may control the air volume of the air cleaning unit to be adjusted according to a change in the carbon dioxide concentration detected by the carbon dioxide sensor unit. Therefore, in the case where the user performs ventilation, air purification is actively enhanced, thereby having an effect of being able to provide a more active and intelligent air purification function.

Description

Air purifier and control method thereof
Technical Field
The present invention relates to an air cleaner and a control method thereof, and more particularly, to an air cleaner and a control method thereof, which can guide ventilation by detecting carbon dioxide in a room and actively adjust air cleaning by determining whether ventilation is performed or not.
Background
The air cleaner is a device that, after sucking contaminated air in a room, performs a cleaning action of removing contaminants and the like from the sucked air, and discharges the cleaned air. Generally, an air purifier may select a function of air purification according to a user's control or according to a degree of pollutants distributed in inhaled air, or automatically perform the function of air purification.
As an existing air purifier, there is korean patent laid-open No. 10-1828936 (2018.02.07). In korean patent No. 10-1828936 (2018.02.07), fans provided to a plurality of air purification modules or a circulation fan provided to a flow regulation device are selectively driven based on an operation mode or a pollution degree detected by a sensor device, thereby determining an amount of air discharged from an air purifier.
Such an air cleaner provides a function of filtering fine particles such as dust in air and removing odor and the like using a filter.
However, in the case of such a conventional air cleaner, since carbon dioxide cannot be filtered, there is a limitation that a function of detecting carbon dioxide cannot be provided. In contrast, the actual demands of the user on the air purifier include the overall purification and management of indoor air containing carbon dioxide.
Documents of the prior art
Patent document
Patent document 1: korean granted patent No. 10-1828936
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an air purifier and a control method thereof, which can provide a more active and intelligent air purifying function by actively intensifying air purification when a user performs ventilation by determining whether or not ventilation is performed based on a change amount of a carbon dioxide concentration and adjusting an air volume of an air purifying part based on a determination result.
Another object of the present invention is to provide an air cleaner and a control method thereof, which can provide an indoor management function for carbon dioxide by detecting carbon dioxide and guiding a user to perform ventilation when carbon dioxide is detected in a room by a predetermined amount or more.
In addition, it is another object of the present invention to provide an air purifier and a control method thereof, which can provide ventilation information to a user through various user interfaces by providing a notification about ventilation guidance to a user terminal through a display or wireless communication.
Objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention, which are not mentioned, can be understood by the following description and can be more clearly understood by embodiments of the present invention. Further, it will be readily understood that the objects and advantages of the present invention may be realized by the means specified in the appended claims and combinations thereof.
To achieve the above object, an air purifier according to an embodiment of the present invention, which is located indoors and regulates air purification by detecting air in the indoor, may include: a comprehensive purification degree sensor unit for detecting a comprehensive purification degree of indoor air; a carbon dioxide sensor unit for detecting a carbon dioxide concentration in the indoor air; an air cleaning unit provided with a blower fan and a filter member; and a control unit that controls an operation of the air purification unit based on detection results of the integrated purification degree sensor unit and the carbon dioxide sensor unit. The control unit may control the air volume of the air cleaning unit to be adjusted according to a change in the concentration of carbon dioxide detected by the carbon dioxide sensor unit.
The control unit may control the air volume of the air cleaning unit to be increased when it is detected that the carbon dioxide concentration detected by the carbon dioxide sensor unit changes in a direction of decreasing.
The control unit may calculate a carbon dioxide concentration at predetermined unit time intervals using the carbon dioxide detection information detected by the carbon dioxide sensor unit, and may control the air cleaning unit to increase the air volume if the calculated carbon dioxide concentration continues to decrease for a predetermined period of time.
The control unit may control to increase the air volume of the air cleaning unit when an increase amount of the dust concentration detected by the integrated purification degree sensor unit exceeds a preset threshold amount.
The control unit may determine a degree of increase in the air volume of the air purification unit by comparing a first carbon dioxide concentration at a first time point with a second carbon dioxide concentration at a second time point.
The air purifier may further include a circulator (circulator) having a circulation fan. The control unit may control the air volume of the circulator to be increased when it is detected that the carbon dioxide concentration detected by the carbon dioxide sensor unit is changed in a direction of decreasing.
The control unit may assign a level to the indoor air according to the indoor air state detected by the integrated purification degree sensor unit, and control the air purification unit to operate at an air volume set according to the level of the indoor air.
In the case where the control unit detects that the carbon dioxide concentration detected by the carbon dioxide sensor unit changes in a direction in which the carbon dioxide concentration decreases while the air purification unit operates at a first air volume set according to the level of the indoor air, the air purification unit may be controlled to operate at a second air volume larger than the first air volume.
The control unit may set an increase amount of the second air volume to correspond to a decrease amount of the carbon dioxide concentration.
The control unit may control to provide a ventilation request to a user when the carbon dioxide concentration detected by the carbon dioxide sensor unit meets a ventilation criterion.
The control unit may compare a first carbon dioxide concentration at a first time point with a second carbon dioxide concentration at a second time point, and may stop the supply of the ventilation request when the second carbon dioxide concentration is reduced by a predetermined amount or more from the first carbon dioxide concentration.
The air purifier may further include a display part for displaying at least one of a comprehensive purification degree of the indoor air, an operating state of the air purifying part, and an operating state of the circulator. The display unit includes a ventilation request icon that is activated by the control unit when a first carbon dioxide concentration detected by the carbon dioxide sensor unit at a first time point matches a ventilation reference.
An air purifier, which is located indoors and regulates air purification by detecting air in the room, according to an embodiment of the present invention, may include: a comprehensive purification degree sensor unit for detecting a comprehensive purification degree of indoor air; a carbon dioxide sensor unit for detecting a carbon dioxide concentration in the indoor air; an air cleaning unit provided with a blower fan and a filter member; and a control unit that controls an operation of the air purification unit based on detection results of the integrated purification degree sensor unit and the carbon dioxide sensor unit. The control unit may control the ventilation request to be provided to the user when the carbon dioxide concentration detected by the carbon dioxide sensor unit meets a ventilation standard.
The air purifier may further include a display part for displaying at least one of a comprehensive purification degree of the indoor air, an operating state of the air purifying part, and an operating state of the circulator. The display unit may include a ventilation request icon, and the ventilation request icon may be activated by the control unit when the carbon dioxide concentration detected by the carbon dioxide sensor unit meets the ventilation reference.
The air purifier may further include a communication part connectable with the user terminal in a wireless communication manner. The control unit may control the communication unit to transmit a message for the ventilation request to the user terminal when the carbon dioxide concentration detected by the carbon dioxide sensor unit meets a ventilation reference.
A control method of an air purifier according to an embodiment of the present invention, which is a method of controlling an air purifier located indoors and adjusting air purification by detecting air in a room, may include: a step for detecting the comprehensive purification degree of the indoor air; a step for detecting a carbon dioxide concentration in the indoor air; controlling the operation of the air purifying part according to the detected comprehensive purification degree; and controlling to adjust the air volume of the air purification unit according to the change of the carbon dioxide concentration.
The step of controlling the operation of the air purifying part may include: a step of giving a grade to the indoor air according to the indoor air state detected by the comprehensive purification degree sensor unit; and controlling the air purification unit to operate at a first air volume set according to the level of the indoor air.
The controlling to adjust the air volume of the air purifying part may include: a step for detecting a change amount of the carbon dioxide concentration; and a step of increasing the first air flow rate and setting the first air flow rate as a second air flow rate when it is detected that the carbon dioxide concentration changes in a direction toward a decrease.
The controlling to adjust the air volume of the air purifying part may include: a step for detecting an increase amount of the dust concentration detected by the integrated purification degree sensor section; and a step of increasing the first air volume and setting it as a second air volume if the increase in the dust concentration exceeds a preset threshold amount.
The controlling to adjust the air volume of the air purifying part may include: and setting an increase amount of the second air volume in accordance with the decrease amount of the carbon dioxide.
The control method of the air purifier may further include: and a step of controlling to provide a ventilation request to the user when the carbon dioxide concentration detected by the carbon dioxide sensor section meets a preset ventilation standard.
As described above, according to the air cleaner and the control method thereof of the present invention, whether or not ventilation is performed is determined based on the amount of change in the carbon dioxide concentration, and the air volume of the air cleaning unit is adjusted based on the determination result, so that air cleaning is actively enhanced when a user performs ventilation, thereby providing a more active and intelligent air cleaning function.
Further, by detecting carbon dioxide, when carbon dioxide of a predetermined amount or more is detected in the room, the user is guided to perform ventilation, and thus an indoor management function for carbon dioxide can be provided.
In addition, a notification about ventilation guidance is provided to the user terminal through display or wireless communication, thereby having an effect of being able to provide ventilation information to the user through various user interfaces.
Drawings
Fig. 1 is a diagram showing an air purifier of an embodiment of the present invention.
Fig. 2 is a sectional view of an air cleaner of an embodiment of the present invention.
Fig. 3 is a block diagram illustrating the configuration of an air purifier of an embodiment of the present invention.
Fig. 4 is a diagram showing an example of a display unit and an input unit in the air cleaner according to the embodiment of the present invention.
Fig. 5 is a block diagram illustrating an embodiment of the integrated purification degree sensor section shown in fig. 3.
Fig. 6 is a block diagram illustrating an embodiment of the control unit shown in fig. 3.
Fig. 7 is a diagram for explaining an example of a control method of the air cleaner according to the embodiment of the present invention.
Fig. 8 is a diagram illustrating another example of a control method of an air cleaner according to an embodiment of the present invention.
Fig. 9 is a diagram illustrating one embodiment of a step for detecting carbon dioxide in the control method of the air purifier.
Fig. 10 is a diagram illustrating one embodiment of a step for notifying ventilation guidance in a control method of an air purifier.
Fig. 11 is a diagram illustrating an embodiment of a step for determining whether ventilation is performed or not in the control method of the air purifier.
Fig. 12 is a diagram illustrating another embodiment of the steps for determining whether ventilation is performed or not in the control method of the air purifier.
Description of the reference numerals
10: air purifier
100: first air purification module
110: first housing 120: first filter component
130: first fan case 140: first blowing fan
200: second air purification module
210: second housing 220: second filter component
230: second fan housing 240: second blowing fan
300: circulator
310: third fan case 320: discharge part
330: circulating fan
400: display unit
440: ventilation request icon
500: input unit
600: integrated purification degree sensor unit
610: the dust sensor 620: smell sensor
700: carbon dioxide sensor unit
800: communication unit
900: control unit
910: total purification degree setting unit 920: ventilation setting unit
930: air volume control part
Detailed Description
In the following, the aforementioned objects, features and advantages will be described in detail with reference to the accompanying drawings, whereby a person having ordinary skill in the art to which the present invention pertains can easily carry out the technical idea of the present invention.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
While the invention is susceptible to various modifications and alternative embodiments, specific embodiments thereof are shown in the drawings and will herein be described in detail. It is not intended to limit the invention to the specific embodiments, but rather, it is to be construed as including all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
In describing the present invention, the terms first, second, etc. may be used to describe various components, but the components may not be limited by the terms. These terms are only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named a second component, and similarly, a second component may also be named a first component, without departing from the scope of the claims of the present invention.
The term "and/or" may include a combination of multiple related recited items or any of the multiple related recited items.
When a certain component is referred to as being "connected" or "connected" to another component, it is to be understood that it may be directly connected or connected to the other component, but other components may be present therebetween. On the contrary, when a certain component is referred to as being "directly connected" or "directly connected" to another component, it is understood that no other component is present therebetween.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, as used in this specification, singular expressions may include plural expressions unless the context clearly dictates otherwise.
In the present application, the terms "comprising" or "having" are intended to indicate that the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification exist, and it is to be understood that the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may exist or may be added is not previously excluded.
Unless otherwise defined, terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, the following embodiments are provided to more fully explain to those skilled in the art, and the shapes, sizes, etc. of elements in the drawings may be exaggerated for more clear explanation.
Fig. 1 is a view showing an air cleaner of an embodiment of the present invention, fig. 2 is a sectional view of the air cleaner of the embodiment of the present invention, and fig. 3 is a view showing a configuration of the air cleaner of the embodiment of the present invention.
Referring to fig. 1 to 3, an air purifier 10 of an embodiment of the present invention includes: an air purifying part for generating air flow; and a circulator 300 for switching a discharge direction of the air flow generated by the air purifying unit.
Hereinafter, the case where the air cleaning part includes the first air cleaning module 100 and the second air cleaning module 200 will be described, but the present invention is not limited thereto.
The first air purification module 100 and the second air purification module 200 may be arranged in an up-down direction.
For example, the first air purification module 100 may be disposed at the bottom surface, and the second air purification module 200 may be disposed at the upper side of the first air purification module 100. In this case, the first air cleaning module 100 generates a first air flow for forming a flow of sucking indoor air existing at a lower side of the air cleaner 10. The second air cleaning module 200 generates a second air flow for forming a flow of sucking the indoor air existing at the upper side of the air cleaner 10.
In addition, the air cleaner 10 may include a blowing fan that discharges the air flowing in toward an upper side.
The blowing fans may include a first blowing fan 140 and a second blowing fan 240. The first blower fan 140 may be disposed on the first air purification module 100, and the second blower fan 240 may be disposed on the second air purification module 200.
The air purifier 10 includes a housing for forming an external appearance.
The housing may include: a first case (case) 110 for forming an external appearance of the first air purification module 100; and a second housing 210 for forming an external appearance of the second air purification module 200.
The first housing 110 is cylindrical, and the first housing 110 may be formed such that the diameter of the upper portion thereof is smaller than that of the lower portion. That is, the first housing 110 may have a conical shape with a cut-off end.
The second housing 210 may also be formed in a shape similar to the first housing 110. The description about the first housing 110 is applied to the second housing 210.
The housing is formed with a suction portion for sucking air.
For example, a first suction portion 115 for sucking air is formed at the first housing 110. The first suction part 115 may include a plurality of penetration holes formed to penetrate at least a portion of the first housing 110. The plurality of through holes may be uniformly formed in a circumferential direction along the outer circumferential surface of the first housing 110 to allow air to be sucked in any direction using the first housing 110 as a reference. That is, air can be sucked in a direction of 360 degrees with reference to a center line in the vertical direction passing through the inner center of the first housing 110. The air sucked through the first suction part 115 can flow in the radial direction from the outer circumferential surface of the first housing 110.
A second suction portion 215 for sucking air may be formed at the second housing 210. The detailed description thereof applies to the description about the first suction portion 115.
The first air purification module 100 includes a first filter member 120. The first filter member 120 may have filter cotton for filtering air at the outside thereof. The air passing through the first suction part 115 including a plurality of through holes may pass through the filter cloths of the first filter member 120 and flow into the inside thereof to be filtered. That is, the air may flow in through the filter cloths of the first filter member 120, and impurities such as fine dust in the air are filtered out in the process of passing through the first filter member 120 as described above.
The first filter member 120 may be detachably installed.
The first filter member 120 may be constructed in various manners, such as a chemical filter and a physical filter, etc. For example, at least one of a deodorizing filter, an antibacterial filter, a High Efficiency molecular Air (HEPA) filter, an Ultra-Low permeability Air (ULPA) filter, an activated carbon filter, an electric dust collector, and a visible light photocatalyst filter may be included.
The first air cleaning module 100 may include a first fan housing (housing) 130, the first fan housing 130 being disposed at an outlet side of the first filter member 120. A space for accommodating the first blower fan 140 is formed in the first fan housing 130.
The first blowing fan 140 may include a centrifugal fan that flows air in an axial direction and discharges the air toward an upper side in a radial direction. The first blower fan 140 may be combined with a first blower fan motor 145 at an upper side thereof, thereby applying a rotational force.
The second air cleaning module 200 may further include a second filter member 220, a second fan housing 230, and a second blowing fan 240.
The second filter member 220 may have a shape in which an upper portion thereof is opened. The air may pass through filter cloths disposed at the outside of the second filter member 220 and flow into the inside of the second filter member 220, and may be discharged through an open upper portion of the second filter member 220. The construction of the second filter member 220 may also be applied to the first filter member 120.
The second filter member 220 may be detachably mounted to the second air cleaning module 200. In the process of passing through the second filter member 220, impurities such as fine dust in the air may be filtered.
The second air cleaning module 200 may further include a second fan housing 230, the second fan housing 230 being disposed at an outlet side of the second filter member 220. A space for accommodating the second blowing fan 240 is formed in the second fan case 230. The second blowing fan 240 includes a centrifugal fan that flows air in the axial direction and discharges the air toward the upper side in the radial direction. The second air blowing fan 240 may be combined with a second air blowing fan motor 245 at an upper side thereof, thereby applying a rotational force.
The circulator 300 may be disposed at an upper side of the second air purification module 200. The air flow path of the second air purification module 200 may communicate with the air flow path of the circulator 300. That is, the air passing through the second air purification module 200 passes through the air flow path of the circulator 300 and can be discharged to the outside via the discharge part 320. The discharge part 320 may be formed at an upper end of the circulator 300.
The circulator 300 may include a third fan housing 310 for accommodating a circulation fan 330. For example, the third fan housing 310 may have a substantially annular shape.
The circulation fan 330 may include an axial-flow fan (axial-flow fan). For example, the circulation fan 330 may be operated in such a manner as to discharge air flowing in the axial direction toward the axial direction. That is, the air flowing upward from the second blowing fan 240 through the circulation fan 330 may be discharged from the circulation fan 330, and may be discharged to the outside through the discharge portion 320 located above the circulation fan 330. The circulation fan 330 is combined with a circulation fan motor 335 at the lower side thereof, thereby applying a rotational force.
The circulator 300 may be provided in a movable manner. Specifically, the circulator 300 can be placed in a horizontal state (first position) or in an inclined state (second position) by including a position switching unit. For example, the position conversion part may include a motor and a gear (not shown) so that a portion of the third fan housing 310 having a ring shape may be lifted up toward an upper side by rotation of the gear.
The circulator 300 is provided with a rotation part 350 so as to be rotatable in the left-right direction. Here, the rotation in the "left-right direction" may mean rotation in a clockwise direction or a counterclockwise direction with reference to the vertical direction. For example, the rotating part 350 may rotate the third fan housing 310 in the left-right direction by including a rotating shaft and a motor.
A discharge grill 325 including a discharge part 320 for discharging air passing through the circulation fan 330 may be provided above the third fan case 310. A display unit 400 for displaying operation information of the air cleaner 10 may be provided in the center of the discharge grill 325. At this time, the display part 400 may move together with the circulator 300.
Fig. 4 shows an example of the display unit 400 and the input unit 500 of the air purifier 10 according to the embodiment of the present invention.
The display unit 400 may be provided at the center of the discharge grill 325 of the circulator 300, and thus may display the air purification degree of the indoor air, the operation state of the air purification units 100 and 200, the operation state of the circulator 300, and the like. The display unit 400 includes a display panel 410 and a ventilation request icon (icon) 440.
In the display section 40, the display panel 410 may display: information on the air purification degree of the indoor air including the fine dust concentration 430 or the presence or absence of odor, etc.; the operation states of the first blower fan 140, the second blower fan 240, and the circulation fan 330 of the circulator 300. In addition, in the case where the first air cleaning unit 100 and the second air cleaning unit 200 are configured as a double layer as in the present embodiment, it is possible to display whether one of the air cleaning units 100 and 200 is operating or both of them are operating. Further, it is possible to display whether the circulator 300 is in a lying state (first position) or in an obliquely standing state (second position), and it is also possible to display whether the circulator is being rotated in the left-right direction.
In addition, the display panel 410 may display whether or not the bedtime reservation 520 is set. In addition, in the present invention, a ventilation request icon 440 may be disposed on the display panel 410.
When the concentration of carbon dioxide detected by the carbon dioxide integrated purification degree sensor unit 600 meets a preset ventilation criterion, the ventilation request icon 440 is activated by the control unit 900, so that it is possible to notify the user that ventilation is required due to an excess of carbon dioxide in the indoor air.
The input unit 500 may be disposed in the display panel 410, and configured to input an operation command for operating the air purification modules 100 and 200, the circulator 300, and the display unit 400. At this time, the operation command includes an operation mode command that can input an operation mode.
In the present invention, the input unit 500 may include a bedtime reservation button 520, an operation mode button 530, an air supply fan control button 540, a circulation fan control button 550, and a power button 560.
The user may turn power to the air purifier 10 off or on by pressing the power button 560.
If the user presses the bedtime reservation button 520, a bedtime reservation can be realized that turns off the power of the air purifier 10 after the input predetermined time has elapsed.
The user can select the operation mode by pressing the operation mode button 530. That is, when the operation mode button 530 is pressed, the first blower fan 140, the second blower fan 240, and the circulation fan 330 can be rotated at a preset rotation speed (rpm), and the movement and the rotation in the left-right direction of the circulator 300 can be controlled. For example, the user can select an automatic mode, a circulation purification mode, a dual (dual) purification mode, a single (single) purification mode, or the like by pressing the operation mode button 530.
The user can directly control the air volume of the first blower fan 140 or the second blower fan 240 by pressing the blower fan control button 540, and can directly control the air volume of the circulation fan 330 by pressing the circulation fan control button 550.
On the other hand, in the present embodiment, the input unit 500 is configured as a button (button), but the present invention is not limited to this, and may include various input methods in which the user can input an operation command by touching or pressing, or may perform a command by voice, or may wirelessly input an operation command by a remote controller or the like.
The integrated purification degree sensor unit 600 can detect the integrated purification degree of the indoor air. The integrated purification degree sensor section 600 can detect dust detection information (for example, fine dust concentration, ultra-fine dust concentration, etc.) and whether or not odor is generated with respect to indoor air, and these dust detection information and odor detection information can be used to set the integrated purification degree.
Fig. 5 is a block diagram illustrating an embodiment of the integrated purification degree sensor part shown in fig. 3, and further referring to fig. 5, the integrated purification degree sensor part 600 may include a dust sensor 610 and an odor sensor 620. The dust sensor 610 detects dust with respect to the indoor air, for example, detects a fine dust concentration and an ultra-fine dust concentration, generates dust detection information using the detection results, and supplies the dust detection information to the control unit 900. The odor sensor 620 is used to detect the odor of the indoor air, for example, detect the amount of gas, and generate odor information using the detection result and provide it to the control section 900.
The integrated purification degree sensor part 600 may be provided to the first air purification module 100 and/or the second air purification module 200.
The carbon dioxide sensor unit 700 may detect carbon dioxide in indoor air. For example, the carbon dioxide sensor unit 700 may detect the concentration of carbon dioxide in the indoor air, generate carbon dioxide detection information using the detection result, and provide the carbon dioxide detection information to the control unit 900.
As an example, the carbon dioxide detection information may be a voltage signal. The carbon dioxide sensor part 700 may detect carbon dioxide and provide a voltage signal having a voltage level corresponding to the detected carbon dioxide concentration to the control part 900.
The carbon dioxide sensor part 700 may be provided to the first air purification module 100 and/or the second air purification module 200.
The control unit 900 may calculate the concentration of carbon dioxide in the indoor air using the voltage signal provided from the carbon dioxide sensor unit 700.
The control unit 900 can control the air volumes of the first blower fan 140, the second blower fan 240, and the circulation fan 330, and can control the movement and the rotation in the left-right direction of the circulator 300, according to the operation command input from the input unit 500.
The control unit 900 may receive an operation command from the input unit 500, receive state information of the indoor air from the integrated purification degree sensor unit 600, and transmit a control command to the first blower fan motor 145, the second blower fan motor 245, the circulation fan motor 335, the position converting unit, and the rotating unit 350.
The control unit 900 may control the operation of the air purification unit based on the detection results of the integrated purification degree sensor unit 600 and the carbon dioxide sensor unit 700.
The control unit 900 sets a total purification degree level based on the state of the indoor air (fine dust concentration, ultra-fine dust concentration, amount of gas, and the like). For example, the control unit 900 may assign a level to the indoor air in four levels of "good", "normal", "poor", and "poor" by using the dust detection information and the odor detection information measured by the integrated purification degree sensor unit 600.
The control unit 900 may preset the rotation speeds (rpm) of the first blower fan 140, the second blower fan 240, and the circulation fan 330 for each level, and may set the movement and the rotation in the left-right direction of the circulator 300 for each level. The control unit 900 may assign an air volume level to each of the first blower fan 140, the second blower fan 240, and the circulation fan 330. For example, air volume levels such as "weak wind", "medium wind", "strong wind", and "strong wind" may be assigned in order of increasing air volume, and the rotation speeds (rpm) of the first blower fan 140, the second blower fan 240, and the circulation fan 330 may be set for each level.
When the automatic mode is input from the input unit 500, the control unit 900 may operate the first air purification module 100, the second air purification module 200, and the circulator 300 according to the level of the total purification degree of the indoor air detected by the total purification degree sensor unit 600. That is, when the automatic mode is activated, the control unit 900 may set the level of the integrated purification degree based on the dust detection information and the gas detection information detected by the integrated purification degree sensor unit 600. The control unit 900 may operate the first blower fan 140, the second blower fan 240, and the circulation fan 330 at a predetermined air volume level according to the level of the integrated purification degree. For example, when the level of the total purification degree is "good", the first air blowing fan 140, the second air blowing fan 240, and the circulation fan 330 may be operated at a "weak wind" level, and when the levels of the total purification degree are "normal", "poor", and "poor", respectively, the first air blowing fan 140, the second air blowing fan 240, and the circulation fan 330 may be operated at a "medium wind" level, a "strong wind" level, and a "strong wind" level, respectively.
The control part 900 may control the movement and the rotation in the left and right directions of the circulator 300 corresponding to the level of the integrated purification degree. For example, when the integrated purification degree level is "good" or "normal", the control unit 900 may set the circulator 300 in a lying state (first position) and may not rotate (fix) in the left-right direction; when the level of the indoor air is "poor", the control unit 900 may set the circulator 300 in an obliquely standing state (second position) without rotating in the left-right direction; when the level of the total purification degree is "extremely poor", the control unit 900 may rotate the circulator 300 in the left-right direction while the circulator is in an obliquely standing state (second position).
On the other hand, when the operation modes other than the automatic mode are activated, the controller 900 may control the movement and the rotation in the right and left directions of the circulator 300 while rotating the first blower fan 140, the second blower fan 240, and the circulation fan 330 at rotation speeds (rpm) preset according to the respective operation modes. At this time, the user may directly control the air volume level of the first blower fan 140, the second blower fan 240, or the circulation fan 330 through the input part 500, and may directly control the movement and the rotation in the left-right direction of the circulator 300.
The control unit 900 may control the air volume of the air cleaning unit to be adjusted according to the change in the carbon dioxide concentration detected by the carbon dioxide sensor unit 700.
The controller 900 may control to provide a ventilation request to the user when the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 meets the ventilation criterion.
In one embodiment, the control part 900 may calculate the carbon dioxide concentration using the carbon dioxide detection information detected by the carbon dioxide sensor part 700, and set the carbon dioxide status to four levels of "good", "normal", "poor", and "extremely bad" according to the calculated carbon dioxide concentration. The control unit 900 may set the "extreme difference" level as a ventilation reference, and may notify the user of ventilation guidance when the carbon dioxide state is at the "extreme difference" level.
For example, the control unit 900 may guide the user to perform ventilation by activating the ventilation request icon 440 of the display unit 400. Meanwhile, the control section 900 may be controlled to provide an audio notification, such as a beep or voice notification, to the user.
For example, the control unit 900 may control to transmit a message related to the ventilation request to the user terminal through the communication unit 800.
After the ventilation is guided, when the carbon dioxide concentration decreases, the control unit 900 may determine that ventilation is performed and stop the ventilation guidance notification.
For example, the controller 900 may compare a first carbon dioxide concentration calculated at a first time point with a second carbon dioxide concentration calculated at a second time point, and may control to stop providing the ventilation request when the second carbon dioxide concentration is reduced by a predetermined amount or more from the first carbon dioxide concentration.
When the control unit 900 detects that the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 changes in a direction of decreasing, it can control to increase the air volume of the air cleaning unit.
This is because the carbon dioxide has a characteristic that the content thereof is not decreased or increased by the air cleaner, and therefore, the decrease in the carbon dioxide concentration (content) in the indoor air is caused by an external factor other than the air cleaner, that is, the inflow of the external air having a lower carbon dioxide concentration than the indoor air. Therefore, the controller 900 may determine that ventilation is being performed when it is detected that the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 has changed in a direction of decreasing.
On the other hand, ventilation is performed when outside air flows in instead of the current indoor air, and therefore the outside air that flows in contains contaminants such as dust and odor unlike the indoor air. In particular, when the air cleaner is performing an action or has performed an action indoors, outdoor air is more polluted than indoor air. Therefore, when it is determined that ventilation is performed, the controller 900 can strongly increase the intensity of air purification.
As a result, since the carbon dioxide concentration (content) in the air is decreased by the inflow of the outside air and the ventilation, the controller 900 may control the air volume of the air cleaning unit to be increased when it is detected that the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 is changed in a direction of decreasing.
In one embodiment, the control unit 900 may calculate the concentration of carbon dioxide using carbon dioxide detection information detected by the carbon dioxide sensor unit 700 at predetermined unit time intervals. When the carbon dioxide concentration calculated during the predetermined time continues to decrease, the control section 900 determines that ventilation is performed, and may control to increase the intensity of air purification.
For example, the carbon dioxide sensor unit 700 may generate detection information of 256 carbon dioxide units in 2 seconds and supply the generated detection information to the control unit 900, and the control unit 900 may calculate the concentration of carbon dioxide using the detection information of 256 carbon dioxide units detected in 2 seconds. If the carbon dioxide concentration calculated for 10 times in 20 seconds shows a tendency to continuously decrease, the controller 900 may determine that ventilation is being performed. If the carbon dioxide concentration that is decreasing increases, the control unit 900 may determine again whether the change in the carbon dioxide concentration is decreasing, based on the time point of the increase.
The above description has been given of an example in which whether ventilation is performed or not is determined by an increase in the carbon dioxide concentration.
On the other hand, in one embodiment, the control part 900 may also judge whether or not to exchange air by the amount of increase in the dust concentration. For example, the control unit 900 may determine that ventilation is performed when the increase amount of the dust concentration detected by the integrated purification degree sensor unit 600 exceeds a preset threshold amount. This is because the dust concentration of the outside air is higher than the indoor air on which the air purification is performed, and therefore, when the ventilation is performed, the dust concentration temporarily increases. When the dust concentration increases and exceeds the threshold amount, the control portion 900 may control to increase the air volume of the air cleaning portion.
In one embodiment, the dust concentration is detected by the integrated purification degree sensor section 600 at intervals of a predetermined time, and if the amount of increase in the dust concentration calculated at the intervals exceeds a threshold amount, the control section 900 may determine that ventilation is performed and may control to increase the air volume of the air purification section.
If it is determined that ventilation is performed, the control unit 900 may control to increase the air volume of the air cleaning unit. Alternatively, if it is determined that ventilation is performed, the control unit 900 may control to increase the air volume of the circulator.
In one embodiment, if it is determined that ventilation is performed, the control unit 900 may control the air purifying unit so that the air purifying unit increases the air volume in operation by one level according to the total purification degree.
For example, when the integrated purification degree level is "good", the control unit 900 may operate the air purification unit at a "weak wind" level; in the case where the integrated purification degree level is "normal", the control section 900 may cause the air purification section to operate at a "medium wind" level; in the case where the integrated purification degree level is "poor", the control section 900 may operate the air purification section at a "strong wind" level; if the integrated purification degree level is "poor", the control unit 900 may operate the air purification unit at a "strong wind" level. Here, when it is determined that ventilation is being performed, if the integrated purification degree level is "good", the control unit 900 may increase the "weak wind" level to the "medium wind" level; in the case where the integrated purification degree level is "normal", the control section 900 may increase the "middle wind" level to the "strong wind" level; if the integrated purification degree level is "poor", the control section 900 may increase the "strong wind" level to the "strong wind" level; if the integrated purification degree level is "poor", the control unit 900 may operate the air purification unit by maintaining the "strong wind" level or increasing the level to a level stronger than the "strong wind" level.
In one embodiment, the control unit 900 may set the increase amount of the air volume according to the decrease amount of the carbon dioxide. That is, the control unit 900 may determine the degree of increase in the air volume of the air purifying unit by comparing the carbon dioxide concentration calculated at the first time point and the second carbon dioxide concentration calculated at the second time point.
For example, the control unit 900 may set the carbon dioxide status to four levels of "good", "normal", "poor", and "extremely poor" according to the calculated concentration of carbon dioxide. When the state of carbon dioxide changes by one level, for example, when the state changes from "very poor" to "poor", the control unit 900 may control to increase the air volume by one level. When the state of carbon dioxide changes by two levels, for example, when the state changes from "very poor" to "normal", the control unit 900 may control to increase the air volume by two levels. Since the concentration of carbon dioxide becomes larger equivalently to the inflow of the outside air becoming larger, this is for more strongly performing the air cleaning function.
Fig. 6 is a block diagram illustrating an embodiment of the control unit shown in fig. 3, and an embodiment of the control unit 900 is described with reference to fig. 6.
The controller 900 may include a total purification degree setting unit 910, a ventilation setting unit 920, and an air volume controller 930.
The total purification degree setting unit 910 may set the total purification degree of the indoor air based on the dust detection information and the odor detection information detected by the total purification degree sensor unit 600.
The dust detection information may include a fine dust concentration and an ultra-fine dust concentration, and the integrated purification degree setting part 910 may set an integrated purification degree level using the dust detection information. For example, the total purification degree setting unit 910 sets the concentration of fine dust to 0 μ g/m 3 Above and 30 μ g/m 3 In the following cases, a "good" rating may be given; at 31. Mu.g/m 3 Above 80 μ g/m 3 In the following cases, a "normal" rating may be given; at 81. Mu.g/m 3 Above and 150. Mu.g/m 3 In the following cases, a "poor" rating may be given; at 151. Mu.g/m 3 In the above case, a rating of "extreme difference" may be given; and the concentration of the ultrafine dust is 0 μ g/m 3 Above and 15 μ g/m 3 In the following cases, a "good" rating can be given; at 16. Mu.g/m 3 Above 35 μ g/m 3 In the following cases, a "normal" rating may be given; at 36. Mu.g/m 3 Above and 75 μ g/m 3 In the following cases, a "poor" rating may be given; at 76. Mu.g/m 3 In the above case, a rating of "extreme difference" may be given.
The integrated purification degree setting unit 910 may set the integrated purification degree level based on the dust detection information and then re-evaluate the integrated purification degree level using the odor detection information. That is, in the case where a predetermined amount or more of odor is detected, the comprehensive purification degree level may be increased based on the dust detection information.
The total purification degree setting unit 910 may supply the set total purification degree level to the ventilation setting unit 920 and the air volume control unit 930.
The ventilation setting unit 920 may control to provide a ventilation request to the user when the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 meets the ventilation standard.
In one embodiment, the ventilation setting unit 920 may calculate the carbon dioxide concentration using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700, and set the carbon dioxide status to four levels of "good", "normal", "poor", and "extremely bad" according to the calculated carbon dioxide concentration. The ventilation setting unit 920 may set the "worst" level as the ventilation standard, and may notify the user of ventilation guidance when the carbon dioxide state is at the "worst" level.
The ventilation setting unit 920 may supply the level of the carbon dioxide concentration to the air volume controller 930.
For example, the ventilation setting unit 920 may guide the user to perform ventilation by activating the ventilation request icon 440 of the display unit 400. At the same time, ventilation setting 920 may be controlled to provide an audible notification, such as a beep or voice notification, to the user.
For example, the ventilation setting unit 920 may control the communication unit 800 to transmit a message about the ventilation request to the user terminal.
The air volume controller 930 may control the air volume of the air purifier.
The air volume controller 930 may control the air volume of the air cleaner based on the total purification degree level provided by the total purification degree setting unit 910.
For example, in the case where the integrated purification degree level is "good", the air volume controller 930 may operate the air purifier at a "weak wind" level; in the case where the integrated purification degree level is "normal", the air volume control unit 930 may operate the air purification unit at a "medium wind" level; when the integrated purification degree level is "poor", the air volume control unit 930 may operate the air purification unit at a "strong wind" level; if the integrated purification degree level is "poor", the air volume control unit 930 may operate the air purification unit at a "strong wind" level.
The ventilation setting unit 920 may determine whether ventilation is being performed based on a change in the carbon dioxide concentration, and may transmit a request for increasing the air volume to the air volume control unit 930 if it is determined that ventilation is being performed.
When it is detected that the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 changes in a direction of decreasing, the ventilation setting unit 920 may request the air volume control unit 930 to increase the air volume of the air cleaning unit.
In one embodiment, the ventilation setting unit 920 may calculate the carbon dioxide concentration using carbon dioxide detection information detected by the carbon dioxide sensor unit 700 at predetermined time intervals. When the carbon dioxide concentration calculated by the ventilation setting unit 920 continues to decrease for a predetermined period of time, it can be determined that ventilation is performed.
The ventilation setting unit 920 may determine whether ventilation is performed or not based on the increase in the dust concentration. When the increase amount of the dust concentration detected by the integrated purification degree sensor unit 600 exceeds a preset threshold amount, the ventilation setting unit 920 may determine that ventilation is performed.
In one embodiment, the dust concentration is detected by the integrated purification degree sensor unit 600 at intervals of a predetermined time, and if the increase amount of the dust concentration calculated at the intervals of the predetermined time exceeds a threshold amount, the ventilation setting unit 920 may determine that ventilation is performed and may increase the air volume of the air purification unit.
For example, the threshold amount for determining whether to perform ventilation may be a preset value.
As another example, the threshold amount may be calculated by the ventilation setting unit 920 based on the dust concentration detected in a plurality of time intervals. For example, the ventilation setting unit 920 may calculate the increase amount on the basis of the dust concentration detected at each time interval, and set the average value of the increase amount during a predetermined time (for example, 12 hours or the like) as the threshold amount. Here, as necessary, for the case where the increase amount largely exceeds the average value, it is judged as ventilation, and these cases may not be reflected in the calculation of the average value.
In the above examples, the average value is used as a reference, but various other methods such as an intermediate value and a deviation may be applied.
In one embodiment, the air volume controller 930 may set the increase amount of the air volume according to the decrease amount of the carbon dioxide.
For example, when the state of carbon dioxide is increased by one level, for example, when the state is changed from "very poor" to "poor", the air volume controller 930 may control the air volume to be increased by one level. When the state of carbon dioxide is changed by two levels, for example, when the state is changed from "very poor" to "normal", the air volume controller 930 may control to increase the air volume by two levels.
In one embodiment, if it is determined that ventilation is performed, the air volume controller 930 may control the air cleaner to increase the air volume in operation by one level according to the total purification degree.
For example, when it is determined that ventilation is being performed, if the integrated purification degree level is "good", the air volume control unit 930 may increase the "weak wind" level to the "medium wind" level; in the case where the integrated purification degree level is "normal", the air volume control section 930 may increase the "medium wind" level to the "strong wind" level; if the integrated purification degree level is "poor", the air volume control unit 930 may increase the "strong wind" level to the "strong wind" level; if the integrated purification degree level is "poor", the air volume control unit 930 may operate the air purification unit by maintaining the "strong wind" level or increasing the level to a level stronger than the "strong wind" level.
With reference to fig. 1 to 6, various embodiments of the air cleaner according to the embodiment of the present invention are described.
Hereinafter, a control method of the air cleaner according to an embodiment of the present invention will be described with reference to fig. 7 to 11. However, a control method of the air purifier, which will be described below, is performed in the control part of the air purifier described above with reference to fig. 1 to 6, and thus, can be more easily understood with reference to the description above with reference to fig. 1 to 6.
Fig. 7 is a diagram illustrating an example of a method of controlling an air cleaner according to an embodiment of the present invention. Fig. 7 is a control method for explaining a case where ventilation is generated while the air cleaning function is operating.
Referring to fig. 7, the controller 900 may detect the total purification degree of the indoor air and control the operation of the air purifier according to the detected total purification degree (S710).
The controller 900 may detect carbon dioxide in the indoor air (S720).
The controller 900 may provide a notification about ventilation guidance based on the detected level (concentration) of carbon dioxide (S730).
The control unit 900 may control the air volume of the air cleaning unit according to the change in the carbon dioxide concentration. That is, the control unit 900 may determine whether ventilation is to be performed or not based on a change in the level (concentration) of carbon dioxide (S740). If it is determined that ventilation is performed, the control unit 900 may control to increase the current intensity of air purification (S750).
In one embodiment, the control unit 900 may give a level to the indoor air according to the indoor air state detected by the integrated purification degree sensor unit 600, and may control to operate at an air volume set according to the level of the indoor air. Then, when it is detected that the carbon dioxide is changed in a decreasing direction, the control part 900 may increase the air volume set according to the level of the indoor air and set the air volume higher by one level. Here, the control unit 900 may set the increase amount of the air volume according to the decrease amount of the carbon dioxide.
Fig. 8 is a diagram illustrating another example of a control method of an air cleaner according to an embodiment of the present invention. Fig. 8 is a control method for the case where ventilation occurs while the air purification function is in the idle state.
Referring to fig. 8, the controller 900 may detect carbon dioxide in the indoor air (S810).
The controller 900 may provide a notification regarding ventilation guidance based on the detected level (concentration) of carbon dioxide (S820).
The control unit 900 may control the air volume of the air cleaning unit according to the change of the carbon dioxide concentration. That is, the control unit 900 may determine whether ventilation is to be performed or not based on a change in the level (concentration) of carbon dioxide (S830). If it is determined that ventilation is performed, the control unit 900 may detect the total purification degree of the indoor air, determine the intensity of air purification from the detected total purification degree, and control to perform air purification by further increasing the determined intensity of air purification (S840).
Fig. 9 is a diagram illustrating one embodiment of a step for detecting carbon dioxide in the control method of the air purifier.
Referring to fig. 9, the carbon dioxide sensor part 700 may continuously detect carbon dioxide and provide a voltage signal to the control part 900 corresponding to the detected value.
The control unit 900 may calculate the carbon dioxide concentration at predetermined time intervals by using carbon dioxide detection information detected by the carbon dioxide sensor unit 700.
When a predetermined unit time has elapsed (yes at S920), the control unit 900 may calculate an average value of voltage values detected during the unit time (S930), and may calculate a carbon dioxide concentration by calculating a carbon dioxide level (concentration) corresponding to the average voltage value (S940).
Fig. 10 is a diagram illustrating an embodiment of a step for notifying ventilation guidance in the control method of the air purifier.
Referring to fig. 10, if the carbon dioxide level (concentration) calculated by the control unit 900 meets a preset threshold (ventilation criterion) (S1010, yes), the control unit 900 may control the ventilation request icon 440 to be activated (S1020). Meanwhile, the control section 900 may also control to provide an audible notification, such as a beep or a voice notification, to the user.
Further, the control unit 900 may control to transmit a message about the ventilation request to the user terminal through the communication unit 800 (S1030).
Fig. 11 is a diagram illustrating an embodiment of a step for determining whether ventilation is performed or not in the control method of the air purifier. One example shown in fig. 11 is an example in which the increase amount of carbon dioxide is used to determine whether ventilation is performed or not.
Referring to fig. 11, the control unit 900 may calculate the concentration (level) of carbon dioxide using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700 for each predetermined first unit time (S1110).
When a second unit time longer than the first unit time elapses (yes in S1120), the control unit 900 determines whether or not the carbon dioxide concentration calculated during the second unit time continuously decreases (yes in S1130). If the carbon dioxide concentration continues to decrease during the second unit time, the controller 900 may determine that ventilation is performed (S1140).
For example, the controller 900 may calculate the carbon dioxide concentration using detection information of 256 carbon dioxide detected in 2 seconds, that is, in a period of the first unit time. If the carbon dioxide concentration calculated for 10 units of time during 20 seconds, i.e., the second unit time, tends to decrease continuously, controller 900 may determine that ventilation is being performed.
If the concentration (level) of carbon dioxide does not continuously decrease during the second unit time (S1130, no), the process is repeated from step S1110.
Fig. 12 is a diagram illustrating another embodiment of the step for determining whether to perform ventilation in the control method of the air purifier. Fig. 12 shows an example in which the increase amount of the dust concentration is used to determine whether or not ventilation is performed.
Referring to fig. 12, the controller 900 may check the dust concentration using the dust detection information detected by the integrated purification degree sensor 600 at every predetermined unit time (S1210). If the increase in the dust concentration exceeds the threshold amount (S1220, yes), the control unit 900 may determine that ventilation is performed (S1230). If the increase amount of the dust concentration is equal to or less than the threshold amount (S1220, no), the execution is repeated from step S1110.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is not limited thereto, and it is apparent that those skilled in the art to which the present invention pertains can modify or improve the present invention within the technical spirit of the present invention.
All such simple modifications and variations of the present invention are within the scope of the present invention, and the specific scope of the present invention will be apparent from the scope of the appended claims.

Claims (18)

1. An air purifier which is located indoors and regulates air purification by detecting air in the indoor, comprising:
a comprehensive purification degree sensor unit for detecting the comprehensive purification degree of the indoor air;
a carbon dioxide sensor unit that detects a carbon dioxide concentration in the indoor air;
an air cleaning unit provided with a blower fan and a filter member; and
a control unit for controlling the operation of the air purification unit based on the detection results of the integrated purification degree sensor unit and the carbon dioxide sensor unit,
the control part previously corresponds each integrated purification degree of the indoor air to the air volume level of the air purification part,
the control unit increases each air volume level of the air cleaning unit corresponding to each integrated purification degree when it is determined that ventilation is performed based on a change in the carbon dioxide concentration detected by the carbon dioxide sensor unit in a direction toward a decrease or an increase in the dust concentration detected by the integrated purification degree sensor unit exceeding a preset threshold amount.
2. The air purifier of claim 1,
the control unit calculates a carbon dioxide concentration at predetermined unit time intervals using the carbon dioxide detection information detected by the carbon dioxide sensor unit,
the control unit increases each air volume level of the air purification unit corresponding to each integrated purification degree if the carbon dioxide concentration calculated during a predetermined period of time continues to decrease.
3. The air purifier of claim 1,
the control portion determines a degree of increase of each air volume level of the air purifying portion corresponding to each integrated purification degree by comparing a first carbon dioxide concentration at a first time point and a second carbon dioxide concentration at a second time point.
4. The air purifier of claim 1,
the air purifier further comprises a circulator provided with a circulating fan,
when the control unit detects that the concentration of carbon dioxide detected by the carbon dioxide sensor unit changes in a direction of decreasing, the control unit increases each air volume level of the air purification unit corresponding to each integrated purification degree.
5. The air purifier of claim 1,
the control unit assigns a level to the total purification degree of the indoor air according to the indoor air state detected by the total purification degree sensor unit, and controls the air purification unit to operate at a first air volume level set according to the total purification degree of the indoor air.
6. The air purifier of claim 5,
when the control unit detects that the carbon dioxide concentration detected by the carbon dioxide sensor unit changes in a direction in which the carbon dioxide concentration decreases while the air purification unit operates at the first air volume level set according to the total purification degree of the indoor air, the control unit controls the air purification unit to operate at a second air volume level that is greater than the first air volume level.
7. The air purifier of claim 6,
the control unit sets an increase amount of the second air volume level to correspond to a decrease amount of the carbon dioxide concentration.
8. The air purifier of claim 1,
the control unit controls to provide a ventilation request to a user when the carbon dioxide concentration detected by the carbon dioxide sensor unit meets a ventilation criterion.
9. The air purifier of claim 8,
the control unit compares a first carbon dioxide concentration at a first time point with a second carbon dioxide concentration at a second time point, and controls to stop providing the ventilation request when the second carbon dioxide concentration is reduced by a predetermined amount or more from the first carbon dioxide concentration.
10. The air purifier of claim 8,
the control unit calculates a carbon dioxide concentration using the carbon dioxide detection information detected by the carbon dioxide sensor unit, and sets the carbon dioxide status to four levels of "good", "normal", "poor", and "extremely poor" according to the calculated carbon dioxide concentration,
the ventilation baseline corresponds to the "range" rating.
11. The air purifier of claim 1,
the air purifier also comprises a display part which is used for displaying at least one of the comprehensive purification degree of the indoor air, the working state of the air purification part and the working state of the circulator,
the display unit includes a ventilation request icon that is activated by the control unit when a first carbon dioxide concentration detected by the carbon dioxide sensor unit at a first time point matches a ventilation reference.
12. The air purifier of claim 8,
the air purifier further comprises a communication part which can be connected with a user terminal in a wireless communication manner,
the control unit controls the communication unit to transmit a message for the ventilation request to the user terminal when the carbon dioxide concentration detected by the carbon dioxide sensor unit meets a ventilation criterion.
13. A control method of an air cleaner that is located indoors and that regulates air cleaning by detecting air in the indoor, comprising:
detecting the comprehensive purification degree of indoor air;
a step of detecting a carbon dioxide concentration in the indoor air;
controlling the operation of the air purifying part according to the detected comprehensive purification degree;
a step of previously associating each integrated purification degree of the indoor air with an air volume level of the air purification section; and
and a step of increasing each air volume level of the air purification unit corresponding to each integrated purification degree when it is determined that ventilation is performed based on a change in the carbon dioxide concentration detected by the carbon dioxide sensor unit in a direction of decreasing or an increase in the dust concentration detected by the integrated purification degree sensor unit exceeding a preset threshold amount.
14. The control method of an air purifier according to claim 13,
the step of controlling the operation of the air cleaning unit based on the detected overall cleaning degree includes:
a step of giving a level to the comprehensive purification degree of the indoor air according to the indoor air state detected by the comprehensive purification degree sensor unit; and
and controlling the air purification unit to operate at a first air volume level set according to the total purification degree of the indoor air.
15. The control method of an air purifier according to claim 14,
the step of increasing each air volume level of the air purifying part corresponding to each integrated purification degree includes:
detecting a change amount of the carbon dioxide concentration; and
and a step of increasing the first air volume level and setting the first air volume level as a second air volume level when the change of the carbon dioxide concentration in the direction of decrease is detected.
16. The control method of an air purifier according to claim 14,
the step of increasing each air volume level of the air purifying part corresponding to each integrated purification degree includes:
a step of detecting an increase amount of the dust concentration detected by the integrated purification degree sensor section; and
and a step of increasing the first air volume level and setting the first air volume level as a second air volume level if the increase amount of the dust concentration exceeds a preset critical amount.
17. The control method of an air purifier according to claim 15,
the step of increasing each air volume level of the air purifying part corresponding to each integrated purification degree includes:
and setting an increase amount of the second air volume level according to the decrease amount of the carbon dioxide.
18. The control method of an air purifier according to claim 13, further comprising:
and a step of controlling to provide a ventilation request to the user when the carbon dioxide concentration detected by the carbon dioxide sensor part meets a preset ventilation standard.
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