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WO2025206533A1 - Purificateur d'air - Google Patents

Purificateur d'air

Info

Publication number
WO2025206533A1
WO2025206533A1 PCT/KR2024/095631 KR2024095631W WO2025206533A1 WO 2025206533 A1 WO2025206533 A1 WO 2025206533A1 KR 2024095631 W KR2024095631 W KR 2024095631W WO 2025206533 A1 WO2025206533 A1 WO 2025206533A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
light sources
air purifier
air
mounting portion
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.)
Pending
Application number
PCT/KR2024/095631
Other languages
English (en)
Korean (ko)
Inventor
손일나
김유민
박철우
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Priority to PCT/KR2024/095631 priority Critical patent/WO2025206533A1/fr
Publication of WO2025206533A1 publication Critical patent/WO2025206533A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • 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
    • F24F13/28—Arrangement or mounting of filters
    • 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
    • F24F8/108—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 using dry filter elements
    • 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
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/20—Sunlight

Definitions

  • the present invention relates to an air purifier.
  • An air purifier is a device that purifies polluted indoor air, improving its quality.
  • air purifiers are equipped with a filter that removes airborne substances such as fine dust, bacteria, viruses, and harmful gases. The purified air, which passes through the filter, can then be re-introduced into the room.
  • Korean Patent Publication No. 10-2023-0054983 (Prior Art 1)
  • Korean Patent Publication No. 10-2023-0115675 (Prior Art 2)
  • Korean Patent Publication No. 10-2023-0111745 (Prior Art 3) disclose technologies for integrating a sterilizing device capable of irradiating ultraviolet light into the interior of an air purifier.
  • prior art 1 to prior art 3 are equipped with multiple lamps, there is a problem that the durability of the sterilizer is reduced due to the heat generated by the lamps.
  • the above-mentioned prior art 1 has a complex structure because it includes a separate motor for the operation of the sterilizer, and there is a problem that the filter hardens when exposed to the sterilizer for a long time.
  • prior art 2 and prior art 3 there is a problem that the surface of the filter and surrounding parts harden quickly because multiple UVC-LEDs are arranged inside.
  • UVC-LED ultraviolet light irradiated from the multiple lamps
  • an air purifier is subject to rapid airflow generated by the blower fan. Consequently, even if an air purifier is equipped with a sterilizing device, it is difficult to effectively sterilize the air created by the rapid airflow.
  • the present invention is intended to solve the problems of the prior art as described above, and the purpose of the present invention is to sterilize air introduced into an air purifier with ultraviolet light irradiated from a plurality of light sources, while reducing the amount of heat generated by the plurality of light sources.
  • Another object of the present invention is to effectively sterilize air introduced into an air purifier by appropriately arranging a plurality of light sources.
  • Another object of the present invention is to prevent a filter and surrounding components from being cured by ultraviolet light irradiated from a plurality of light sources.
  • Another object of the present invention is to enable multiple light sources to effectively sterilize the air even when a high-speed airflow is formed inside the air purifier.
  • the present invention may include a casing having a blower fan disposed therein, and a filter mounting portion provided in the casing and spaced apart from the blower fan.
  • a purifying filter may be disposed between the blower fan and the filter mounting portion.
  • a filter passage through which air passes may be formed at the center of the purifying filter.
  • a sterilizing device may be disposed in the filter mounting portion.
  • the sterilizing device may include a plurality of light sources spaced apart from each other that irradiate ultraviolet light toward the filter passage. At this time, the plurality of light sources may each irradiate ultraviolet light in the direction of air flow along the filter passage. When ultraviolet light is irradiated in the direction of air flow from the plurality of light sources in this way, the amount of heat transferred to other light sources may be reduced, and efficient sterilization may be performed in a wide area.
  • the ultraviolet rays irradiated from each of the plurality of light sources can form an irradiation area that overlaps with each other inside the filter passage.
  • the above plurality of light sources can irradiate ultraviolet light in the same direction.
  • the casing may be formed with an air inlet opening toward the side of the purifying filter to allow air to flow into the purifying filter in a first direction.
  • the filter passage may extend in a second direction perpendicular to the first direction.
  • Each of the plurality of light sources may irradiate ultraviolet light in the second direction.
  • the plurality of light sources may be placed at the bottom of the filter passage.
  • the above plurality of light sources may be spaced apart from each other in a direction parallel to the direction in which the air inlet is opened.
  • the above multiple light sources can be respectively placed at different vertices on a regular polygon.
  • multiple light sources can irradiate ultraviolet light in the direction of airflow within the filter passage.
  • multiple ultraviolet light sources are irradiated in the direction of airflow, a wide irradiation area is formed, thereby enhancing the air sterilization efficiency.
  • the present invention optimizes the ratio of the width of the light source to the distance between adjacent light sources, thereby enhancing the sterilizing effect of the light sources while suppressing the increase in heat generation caused by the light sources. Consequently, both the sterilizing effect and durability of the air purifier can be enhanced.
  • light sources can be placed at the bottom of the filter passage. Since the light sources are placed at the entrance of the passage, which is the bottom of the filter passage where the airflow speed is relatively slow, the air flowing through the filter passage can be more effectively sterilized.
  • multiple light sources can be placed on a sterilizing plate that is relatively sunken into the filter mounting portion. Since the light sources are placed sunken into the filter mounting portion, interference between the filter and the multiple light sources can be prevented during the filter mounting/removal process. Accordingly, damage to the light sources can be prevented during the filter mounting/removal process.
  • the present invention when a photocatalyst is coated on the purification filter, multiple light sources can activate the purification filter while widely dispersing ultraviolet light. Accordingly, the deodorizing and antibacterial effects of the purification filter can be enhanced.
  • Figure 1 is a perspective view showing an example of an air purifier according to the present invention.
  • Figure 3 is a cross-sectional view showing the internal structure of an example of an air purifier according to the present invention.
  • Fig. 4 is an enlarged cross-sectional view showing the structure of a filter mounting portion and a purification filter constituting one embodiment of the present invention.
  • Figure 5 is a plan view showing the structure of a casing and a filter mounting portion constituting one embodiment of the present invention.
  • Fig. 6 is a perspective view showing the structure of a filter mounting portion constituting one embodiment of the present invention.
  • Fig. 7 is a plan view showing the structure of a filter mounting portion constituting one embodiment of the present invention.
  • Fig. 8 is a cross-sectional view showing the structure of a filter mounting portion and a sterilizing device constituting one embodiment of the present invention.
  • Fig. 9 is a cross-sectional view showing the structure of a filter mounting portion constituting one embodiment of the present invention.
  • Fig. 10 is an enlarged cross-sectional view showing the structure of a filter mounting portion and a sterilizing device constituting one embodiment of the present invention.
  • Fig. 11 is a plan view showing an enlarged view of the structure of a plurality of light sources constituting one embodiment of the present invention.
  • Figure 12 is a conceptual diagram showing an irradiation area formed by ultraviolet light irradiated from a plurality of light sources constituting one embodiment of the present invention.
  • Figure 13 is a conceptual diagram showing an irradiation area formed by ultraviolet light irradiated from a plurality of light sources by varying the spacing between the light sources constituting one embodiment of the present invention.
  • Figure 14 is a graph showing the relationship between the sterilization rate/continuous sterilization time according to the ratio of the distance between a plurality of light sources constituting one embodiment of the present invention and the width of the light source.
  • Fig. 16 is a plan view showing the structure of a plurality of light sources constituting a third embodiment of the present invention.
  • Fig. 17 is a plan view showing the structure of a plurality of light sources constituting the fourth embodiment of the present invention.
  • the air purifier of the present invention is equipped with a sterilizing device (100) inside, and can sterilize the intake air.
  • the sterilizing device (100) can irradiate ultraviolet light toward the filter passage (53) formed by the purifying filter (50).
  • the structure of the air purifier will be described with a focus on the sterilizing device (100).
  • the drawing shows an air purifier having a pair of slot-shaped air discharge portions (88) formed at the upper portion. This is merely an example, and the present invention can be applied to various types of air purifiers.
  • the air purifier may have a vertically standing form.
  • the air purifier may include a main body (10) and a discharge body (80) connected to the main body (10).
  • a purification filter (50) to be described later is disposed in the main body (10).
  • the discharge body (80) may be viewed as a discharge unit through which air passing through the interior of the main body (10) is discharged into the room.
  • the main body (10) and the discharge body (80) may not be separated from each other but may be formed as a single component.
  • a base (11) is provided at the lower portion of the main body (10).
  • the base (11) may be a portion that is fixed to the ground.
  • the base (11) may have an approximately circular shape.
  • the base (11) may be integrally formed with the main body (10), or may be a separate object.
  • the main body (10) includes a casing (12).
  • the casing (12) forms the outer skeleton of the main body (10).
  • the casing (12) may have a substantially cylindrical shape.
  • the casing (12) has a truncated cone shape with a diameter that decreases from the bottom to the top.
  • the discharge body (80) may form a continuous truncated cone shape together with the casing (12).
  • the discharge body (80) may be viewed as a part of the casing (12).
  • the casing (12) may have a three-dimensional structure having a polygonal cross-section.
  • An air intake portion (13) may be formed in the casing (12).
  • the air intake portion (13) is a portion through which indoor air is intaked.
  • the air intake portion (13) may have a slit shape.
  • the air intake portion (13) is a type of thin hole extending vertically from the casing (12).
  • a plurality of air intake portions (13) may be provided around the outer circumference of the casing (12).
  • the air intake portion (13) may be formed in a circular shape surrounding the casing (12), or as another example, the air intake portion (13) may have various shapes penetrating the casing (12).
  • a lower body (20) may be provided inside the casing (12).
  • the lower body (20) may have a cylindrical shape and be placed inside the casing (12).
  • a power supply unit (25, see Fig. 3) may be placed inside the lower body (20).
  • the lower body (20) may further include various electronic components therein.
  • the lower part of the lower body (20) may be connected to the base (11), and a filter mounting unit (40), which will be described later, may be placed on the upper part.
  • the discharge body (80) can be erected on the upper part of the main body (10).
  • the discharge body (80) can form a surface continuous with the casing (12).
  • the discharge body (80) is composed of a pair of discharge bodies (82A, 82B).
  • An air flow portion (83) which is an empty space, is formed between the pair of discharge bodies (82A, 82B). Indoor air flowing through the air flow portion (83) can flow together with the air discharged from the air discharge portion (88).
  • air discharge portions (88) open from the discharge bodies (82A, 82B) extend vertically. More precisely, the air discharge portions (88) are opened on each surface (85, 87) of the discharge bodies (82A, 82B).
  • the air discharge portions (88) can supply air sterilized in the purification filter (50) and sterilization device, which will be described later, back to the indoor space.
  • a discharge path (90A, 90B) through which air flows may be formed inside the discharge bodies (82A, 82B).
  • a plurality of vanes (93A, 93B) may be provided in the discharge paths (90A, 90B).
  • the vanes (93A, 93B) may guide the air flowing in the discharge paths (90A, 90B) toward the air discharge portion (88).
  • the discharge body (80) may be omitted, and the air discharge portion (88) may be formed directly on the upper portion of the main body.
  • the air purification unit (30) can be placed on the upper part of the lower body (20) inside the casing (12).
  • the air purification unit (30) includes a purification filter (50) and a sterilization device (100), so that indoor air can be purified and supplied to the room.
  • the air purification unit (30) may include a filter space (35) formed between a plurality of columns (31).
  • the purification filter (50) is stored in the filter space (35).
  • the purification filter (50) may be placed in the filter space (35) with the casing (12) removed.
  • the casing (12) may be provided with a separate cover (not shown), and when the filter is removed, the filter space (35) may be opened.
  • the air purification unit (30) is provided inside the casing (12) and can purify indoor air.
  • the air purification unit (30) may include a plurality of columns (31). One end of the plurality of columns (31) may be connected to a filter mounting portion (40) arranged below the filter space (35). The other end of the plurality of columns (31) may be connected to a fan housing (37) arranged above the filter space (35).
  • the purification filter (50) may be mounted on or separated from the filter mounting portion (40) between the plurality of columns (31).
  • the air purification unit (30) may be exposed to the outside of the casing (12), or as another example, the casing (12) may be omitted and the air purification unit (30) may constitute the casing (12).
  • a blower fan (38) may be provided inside the fan housing (37) constituting the air purification unit (30).
  • the blower fan (38) may suck in indoor air through the air intake unit (13). The sucked indoor air may pass through the purification filter (50) and then be discharged to the air discharge unit (88) formed in the discharge body (80) and supplied back into the room.
  • the blower fan (38) may be an axial flow fan that vertically draws in air from the bottom and discharges it in the same direction.
  • the blower fan (38) may be a centrifugal fan that vertically draws in air from the bottom and discharges it axially.
  • the blower fan (38) can be placed on the opposite side of the filter mounting portion (40) with the purifying filter (50) therebetween.
  • the purifying filter (50) is placed between the blower fan (38) and the sterilizing device (100) to be described below.
  • the purifying filter (50) is placed between the air intake portion (13) and the blower fan (38). Accordingly, when the blower fan (38) is operated, the air sucked through the air intake portion (13) first passes through the purifying filter (50) and then forms an air current flowing in the direction of the blower fan (38). In this process, the sucked air can be sterilized by the sterilizing device (100).
  • the above purification filter (50) may be configured by overlapping a plurality of filters.
  • the plurality of filters may include a first filter (55) and a second filter (56, 57).
  • the first filter (55) may include a prefilter and a HEPA filter.
  • the second filter (56, 57) may be coupled to the inner surface of the first filter (55).
  • the second filter (56, 57) may be a deodorizing filter.
  • the second filter (56, 57) may include a base layer (57) and activated carbon (56).
  • the base layer (57) may be referred to as a support layer.
  • Drawing reference numeral 52 represents the inner surface of the second filter (56, 57) and the inner surface (52) of the purification filter (50). Additionally, drawing symbol 52 may be referred to as the outer surface of the filter passage (53).
  • the above filter mounting portion (40) may be approximately circular in shape. Since the purification filter (50) is mounted on the upper surface of the filter mounting portion (40), the filter mounting portion (40) may have a shape corresponding to the shape of the purification filter (50). More precisely, the filter mounting portion (40) may have a size and shape corresponding to the lower frame (51A) of the purification filter (50).
  • a connecting plate (43) is provided on the inside of the support plate (41).
  • the connecting plate (43) protrudes upward from the support plate (41). More precisely, the connecting plate (43) has a structure that protrudes toward the blower fan (38) from the support plate (41). Accordingly, a step structure is created between the connecting plate (43) and the support plate (41). This step may interfere with the inner surface (52) of the purifying filter (50) or the lower frame (51A) to fix the installation state of the purifying filter (50).
  • the connecting plate (43) may be viewed as a part of the support plate (41).
  • the connecting plate (43) may be omitted.
  • An inclined plate (45) is provided on the inside of the above-mentioned connecting plate (43).
  • the inclined plate (45) may be positioned closer to the center of the filter mounting portion (40) than the support plate (41).
  • the inclined plate (45) may have a structure that is inclined downward toward the center of the filter mounting portion (40).
  • the inclined plate (45) may connect between the connecting plate (43) and the sterilizing plate (47).
  • the sterilizing plate (47) is arranged at the center of the filter mounting portion (40).
  • a plurality of light sources (120) constituting the sterilizing device (100) may be arranged on the sterilizing plate (47).
  • a light source hole (49) is formed on the sterilizing plate (47).
  • the light source hole (49) may be formed by penetrating the sterilizing plate (47) in the vertical direction.
  • the sterilizing plate (47) may be sunk most downwardly from the filter mounting portion (40). More precisely, the sterilizing plate (47) is sunk in a direction farther from the blower fan (38) than the support plate (41). Accordingly, the plurality of light sources (120) arranged on the sterilizing plate (47) are also arranged at a position relatively farther from the blower fan (38). Referring to Fig. 4, the light sources (120A, 120B) are arranged at a position sunk downwardly.
  • the light source fences (48A, 48B) are configured to surround the plurality of light sources (120) in the filter mounting portion (40), respectively. More precisely, the light source fences (48A, 48B) are arranged around the edges of the light source hole (49). The light source fences (48A, 48B) protrude from the surface of the sterilizing plate (47) toward the filter passage (53). Accordingly, the light source fences (48A, 48B) can surround the side surfaces of the plurality of light sources (120).
  • the above light source fence (48A, 48B) can reduce the diffusion of ultraviolet light irradiated from the plurality of light sources (120) to the periphery of the filter passage (53), i.e., the inner surface (52) of the purifying filter (50) and surrounding components. Accordingly, hardening of the inner surface (52) of the purifying filter (50) and surrounding components can be prevented.
  • the light source fences (48A, 48B) are composed of a first fence (48A) and a second fence (48B).
  • the first fence (48A) and the second fence (48B) each have a roughly rectangular planar structure.
  • the first fence (48A) and the second fence (48B) may be arranged to be spaced apart from each other by a predetermined distance (D1).
  • the first fence (48A) and the second fence (48B) may be arranged at symmetrical positions based on the center of the sterilizing plate (47).
  • the light source fences (48A, 48B) may have various polygonal shapes such as a triangle or a pentagon, or a circular shape.
  • the second fence (48B) may have a structure symmetrical to the first fence (48A).
  • the second fence (48B) includes a second outer fence (48B1) and a second inner fence (48B2).
  • the second outer fence (48B1) is configured to surround a portion of the second fence (48B) except for the direction facing the first fence (48A).
  • the second inner fence (48B2) is formed at a position facing the first fence (48A). Accordingly, the second outer fence (48B1) has a planar structure having an approximately ' ⁇ ' shape, and the second inner fence (48B2) has a planar structure having an "-" shape.
  • the light source fences (48A, 48B) may be omitted, or the height of the light source fences (48A, 48B) may be formed lower than the height shown.
  • the ultraviolet light irradiated from the light sources (120) may be diffused and widely irradiated onto the inner surface (52) of the purifying filter (50).
  • the light widely irradiated onto the inner surface (52) of the purifying filter (50) in this way may activate the photocatalyst coated on the second filter (56, 57).
  • the photocatalyst can be activated by light, and can be active not only for ultraviolet rays but also for visible light.
  • the photocatalyst is a material that can perform air purification, deodorization, and antibacterial functions by generating electrons and holes from energy obtained by absorbing light to produce superoxide anions or hydroxyl radicals. If the second filter (56, 57) is coated with a photocatalyst, it can be effectively activated by the light sources (120) of the sterilizing device (100). As another example, the photocatalyst may be omitted.
  • the sterilizing device (100) is placed on the filter mounting portion (40).
  • the sterilizing device (100) is provided with a plurality of light sources (120A, 120B) that irradiate ultraviolet light and are spaced apart from each other.
  • Indoor air taken in through the air intake portion (13) is primarily purified while passing through the purifying filter (50), and can be secondarily sterilized by the sterilizing device (100) placed inside the purifying filter (50).
  • the sterilizing device (100) includes a plurality of light sources (120A, 120B), so that air can be sterilized more effectively.
  • the sterilizing device (100) includes a sterilizing board (110) and light sources (120) mounted on the sterilizing board (110).
  • the sterilizing board (110) can control the light sources (120) and supply power to the light sources (120).
  • the sterilizing board (110) may be omitted, and the sterilizing device (100) may be configured with only the light sources (120).
  • power may be supplied to the light sources (120) from a main control unit (not shown).
  • the main control unit may be disposed on the lower body (20).
  • the sterilizing substrate (110) is positioned below the filter mounting portion (40). As shown in Fig. 8, the sterilizing substrate (110) may be positioned so as to face the bottom surface of the sterilizing plate (47).
  • the sterilizing substrate (110) may be formed of a flat-plate structure, for example, a PCB. As another example, the sterilizing substrate (110) may be formed of an FPCB.
  • the above-described plurality of light sources (120) may be composed of UV-C LEDs that irradiate ultraviolet light.
  • the ultraviolet light may be subdivided according to the length of the wavelength.
  • ultraviolet light may be classified into UV-A with a wavelength of 320 nm to 400 nm, UV-B with a wavelength of 280 nm to 320 nm, and UV-C with a wavelength of 200 nm to 280 nm.
  • short-wavelength ultraviolet light, UV-C has the property of destroying bacterial DNA and causing chemical reactions in special substances, and thus can be effectively used for sterilization.
  • the plurality of light sources (120A, 120B) irradiate UV-C. More precisely, the plurality of light sources (120) can generate far-UVC, a narrow spectrum within UV-C light. Far-UVC is known to provide the same pathogen sterilizing effect as UV-C light, but without the harmful side effects of other frequencies or wavelengths.
  • the sterilizing device (100) may also utilize excimer discharge to generate far-UVC in a specific wavelength range.
  • the plurality of light sources (120A, 120B) are arranged to be spaced apart from each other. More precisely, the plurality of light sources (120A, 120B) may be spaced apart from each other in a direction parallel to the direction in which the air intake portion (13) is opened (arrow 1 direction in FIG. 3). In this way, the air sucked through the air intake portion (13) can be evenly sterilized again as it passes through the purification filter (50) and then passes over the plurality of light sources (120).
  • the plurality of light sources (120A, 120B) may be exposed upwardly through the plurality of light source holes (49), respectively.
  • the upward direction may be viewed as a direction toward the filter path (53) and a direction toward the blower fan (38).
  • the plurality of light sources (120) may be surrounded by the plurality of light source fences (48A, 48B) surrounding the light source holes (49).
  • the plurality of light sources (120A, 120B) can irradiate ultraviolet light in the same direction toward the filter passage (53).
  • the same direction means the direction toward the filter passage (53), i.e., the direction of air flow.
  • indoor air is introduced in a first direction (direction of arrow 1 in FIG. 3), and the blower fan (38) causes the introduced air to flow in a second direction (direction of arrow 2 in FIG. 3) orthogonal to the first direction.
  • the plurality of light sources (120) can each irradiate ultraviolet light in the second direction.
  • the plurality of light sources (120A, 120B) do not irradiate ultraviolet light toward the other light sources (120B, 120A), the increase in heat generation between the light sources (120A, 120B) can be reduced.
  • the plurality of light sources (120A, 120B) irradiate ultraviolet light in the same direction, a wider overlapping area can be formed, thereby expanding the area where air is sterilized. That is, the ultraviolet lights irradiated from each of the plurality of light sources (120A, 120B) can form an irradiation area that overlaps with each other inside the filter passage (53). This structure will be described again below.
  • FIG. 9 illustrates a state in which the plurality of light sources (120) are removed.
  • the light source fences (48A, 48B) are formed at a position spaced lower than the upper surface of the filter mounting portion (40). More precisely, the upper portions of the first outer fence (48A1) and the second outer fence (48B1) constituting the light source fences (48A, 48B) and the upper surface of the connecting plate (43) have a predetermined height difference (H1). Accordingly, the light source fences (48A, 48B) may have a shape that is relatively sunken compared to the highest upper surface of the filter mounting portion (40). Accordingly, interference between the lower frame (51A) of the purifying filter (50) and the light source fences (48A, 48B) can be prevented. In addition, when the light source fences (48A, 48B) are positioned in a downwardly sunken position, the area of the light sources (120) exposed to the outside is reduced, thereby preventing the user from being directly exposed to ultraviolet light.
  • the width (D1A) of the light sources (120) and the distance (D1) between the plurality of light sources (120) are expressed.
  • the width (D1A) of the light sources (120) refers to the width in the direction orthogonal to the direction in which the light sources irradiate ultraviolet light, and is the left-right width based on Fig. 10.
  • the distance (D1) at which the plurality of light sources (120) are spaced apart from each other is greater than the width (D1A) of the light sources.
  • the ratio (D1/D1A) of the distance (D1) at which the plurality of light sources (120) are spaced apart from each other to the width (D1A) of the light sources is 1.5 to 4.0. In this way, both the amount of heat generated from the light sources (120) and the sterilization rate by the light sources (120) can be optimized.
  • the sterilization rate and continuous sterilization time according to the ratio (D1/D1A) of the distance (D1) between the plurality of light sources (120) to the width (D1A) of the light source are shown.
  • the sterilization rate was measured by (i) spraying a bacterial solution diluted to a certain concentration into the filter passage (53) for 50 minutes to saturate the space with microorganisms, (ii) operating the sterilizer (100) for 1 hour, and then (iii) capturing cells inside the filter passage (53).
  • the continuous sterilization time is calculated by (i) measuring the temperature around the light sources (120) due to the heat generated from the LED constituting the light sources (120), and (ii) stopping the operation when it becomes higher than the reference temperature (65°C).
  • the light irradiated from the first light source (120A) is spread over a range of K1A-K2A.
  • K1A represents the path along which the ultraviolet light irradiated from the first light source (120A) reaches the lowest point on one inner surface of the purifying filter (50).
  • K2A represents the path along which the ultraviolet light irradiated from the first light source (120A) reaches the lowest point on the opposite inner surface of the purifying filter (50).
  • K1B represents the path along which the ultraviolet light irradiated from the second light source (120B) reaches the lowest point on one inner surface of the purifying filter (50).
  • K2B represents the path along which the ultraviolet light irradiated from the second light source (120B) reaches the lowest point on the opposite inner surface of the purifying filter (50).
  • the ultraviolet lights irradiated from each of the plurality of light sources (120) can form an irradiation area overlapping with each other inside the filter passage (53).
  • the height between the lowest point of the overlapping irradiation area formed by the ultraviolet lights irradiated from the plurality of light sources (120) and the plurality of light sources (120) is expressed as KH.
  • the overlapping irradiation area formed by the ultraviolet lights irradiated from the plurality of light sources (120) starts at a position spaced apart from the plurality of light sources (120) toward the filter passage (53).
  • the plurality of light sources (120) can be controlled independently of each other. That is, the first light source (120A) and the second light source (120B) can be individually turned on/off. In this way, the first light source (120A) and the second light source (120B) can be controlled differently based on conditions such as the level of contamination of indoor air sucked into the filter passage (53), the continuous operation time of the plurality of light sources (120), and the temperature around the light sources (120).
  • FIG. 15 illustrates the structure of light source fences (48A, 48B) of a second embodiment of an air purifier according to the present invention.
  • the first outer fence (48A1) and the first inner fence (48A2) of the first light source (120A) fence may have the same height.
  • the second outer fence (48B1) and the second inner fence (48B2) of the second light source (120B) fence may have the same height. That is, the first inner fence (48A2) and the second inner fence (48B2) are not formed lower than the first outer fence (48A1) and the second outer fence (48B1), respectively.
  • Fig. 16 illustrates the arrangement structure of a plurality of light sources (120A-120C) in a third embodiment of an air purifier according to the present invention. Differences from the previous embodiment will be described in that the plurality of light sources (120A-120C) can be arranged at different vertices of an equilateral triangle based on a plane. In this embodiment, the first light source (120A), the second light source (120B), and the third light source (120C) are spaced apart from each other at equal intervals.
  • the first light source (120A) and the second light source (120B) are spaced apart from each other by 120° (refer to ⁇ in the drawing) based on the center of the filter mounting portion (40), the second light source (120B) and the third light source (120C) are spaced apart from each other by 120° based on the center of the filter mounting portion (40), and the third light source (120C) and the first light source (120A) are also spaced apart from each other by 120° based on the center of the filter mounting portion (40). Therefore, the straight-line distance (D1) between the respective light sources (120A-120C) can also be equal to each other.
  • FIG. 17 illustrates the arrangement structure of a plurality of light sources (120A-120D) in a fourth embodiment of an air purifier according to the present invention.
  • the plurality of light sources (120A-120D) may be arranged at different corners of a square based on a plane.
  • the first light source (120A), the second light source (120B), the third light source (120C), and the fourth light source (120D) are spaced apart from each other at equal intervals. More specifically, the first to fourth light sources (120A-120D) are spaced apart from each other at 90° intervals based on the center of the filter mounting portion (40). Accordingly, the straight-line distance (D1) between the respective light sources (120A-120D) may also be equal to each other.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

La présente invention concerne un purificateur d'air. La présente invention peut comprendre un boîtier (12), dans lequel un ventilateur soufflant (38) est disposé, et une unité de placement de filtre (40), qui est disposée dans le boîtier (12) de manière à être espacée du ventilateur soufflant (38). Un filtre de purification (50) peut être disposé entre le ventilateur soufflant (38) et l'unité de placement de filtre (40). Un trajet d'écoulement de filtre (53), à travers lequel passe l'air, peut être formé au centre du filtre de purification (50). Un dispositif de stérilisation (100) peut être disposé dans l'unité de placement de filtre (40). Le dispositif de stérilisation (100) peut être pourvu d'une pluralité de sources de lumière (120A, 120B) qui sont espacées les unes des autres et émettent une lumière ultraviolette. Dans ce cas, la pluralité de sources de lumière (120A, 120B) peut émettre la lumière ultraviolette dans la même direction vers le trajet d'écoulement de filtre (53). Lorsque la lumière ultraviolette est émise depuis la pluralité de sources de lumière (120A, 120B) dans la direction décrite ci-dessus, la quantité de chaleur transférée à d'autres sources de lumière (120) peut être réduite, et la quantité de chaleur générée autour des sources de lumière (120) peut être réduite en conséquence.
PCT/KR2024/095631 2024-03-25 2024-03-25 Purificateur d'air Pending WO2025206533A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2024/095631 WO2025206533A1 (fr) 2024-03-25 2024-03-25 Purificateur d'air

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Application Number Priority Date Filing Date Title
PCT/KR2024/095631 WO2025206533A1 (fr) 2024-03-25 2024-03-25 Purificateur d'air

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001170145A (ja) * 1999-12-20 2001-06-26 Fujitsu General Ltd 空気清浄機
JP2017192433A (ja) * 2016-04-18 2017-10-26 三菱電機株式会社 殺菌装置及び空調装置
KR20220050539A (ko) * 2020-10-16 2022-04-25 코웨이 주식회사 공기청정기
CN217464746U (zh) * 2021-05-14 2022-09-20 庆东纳碧安株式会社 鼓风机及空调
JP2023066160A (ja) * 2021-10-28 2023-05-15 ダイキン工業株式会社 空気調和機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001170145A (ja) * 1999-12-20 2001-06-26 Fujitsu General Ltd 空気清浄機
JP2017192433A (ja) * 2016-04-18 2017-10-26 三菱電機株式会社 殺菌装置及び空調装置
KR20220050539A (ko) * 2020-10-16 2022-04-25 코웨이 주식회사 공기청정기
CN217464746U (zh) * 2021-05-14 2022-09-20 庆东纳碧安株式会社 鼓风机及空调
JP2023066160A (ja) * 2021-10-28 2023-05-15 ダイキン工業株式会社 空気調和機

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