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KR-102960965-B1 - Air cleaner

KR102960965B1KR 102960965 B1KR102960965 B1KR 102960965B1KR-102960965-B1

Abstract

The air purifier comprises a case, an air inlet, an air outlet, a grille covering the air inlet to filter oil droplets in the air, a fan drawing in air through the air inlet and discharging air outside the air outlet, a roll filter positioned between the grille and the fan to filter oil mist, and a filter cutter for cutting the roll filter. The roll filter comprises a roller and a filter sheet wound around the roller, and the filter sheet can be unwound to extend behind the grille. When the filter sheet becomes dirty, the roller filter is further unwound so that a clean portion is positioned behind the grille, and the filter cutter can cut off the dirty portion. During cutting, a clamp holds the filter sheet down. The case includes a slit through which the dirty portion of the filter sheet passes for disposal.

Inventors

  • 차현병
  • 오윤주
  • 김현주
  • 허희정
  • 현진수

Assignees

  • 엘지전자 주식회사

Dates

Publication Date
20260507
Application Date
20200727
Priority Date
20191028

Claims (20)

  1. A case having an inlet for air intake and an outlet for air discharge; A fan located inside the case so that air is drawn in through the inlet and discharged to the outside through the outlet; A roll filter comprising a roller and a filter sheet wound around the roller; A filter guide configured to unwind the filter sheet from the above roller; A clamp configured to selectively hold the above filter sheet; A filter cutter configured to separate a portion of the filter sheet from the remainder of the filter sheet, wherein the filter sheet is guided by the filter guide; and The system includes a user interface having a motion sensor for detecting a gesture from outside the case, and the speed of the fan is controlled based on what is detected by the motion sensor. The clamp is released before the filter guide guides the filter sheet to be unwound from the roll filter; When the filter guide unwinds the filter sheet from the roll filter, the unwinded first portion of the filter sheet is located between the fan and the inlet, and the unwinded second portion of the filter sheet passes through the filter guide; After the filter guide unwinds the filter sheet by a predetermined amount, the clamp holds the filter sheet in place and the filter cutter separates the second portion unwound from the filter sheet; air purifier.
  2. An air purifier according to claim 1, wherein the motion sensor is located at the top of the case, the inlet is located at the front end of the case, and the outlet is located at the rear end of the case opposite to the front end.
  3. An air purifier according to claim 2, wherein a grille is fixed to the case to cover the opening of the case, and the grille is fixed to the case to cover the opening, and the grille is fixed via at least one of a magnet or a latch so as to be detachable.
  4. An air purifier according to claim 1, further comprising a first motor for driving the fan, wherein when the fan is turned off and the motion sensor detects a hand gesture crossing the motion sensor, the first motor is turned on to rotate the fan at a first speed.
  5. An air purifier according to claim 4, wherein when the fan rotates at a first speed and the motion sensor detects a hand gesture crossing the motion sensor, the first motor rotates the fan at a second speed greater than the first speed.
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  7. In claim 1, a sensor configured to detect the contamination level of a first unraveled portion of the filter sheet; At least one button or touch sensor located in the user interface to allow user input; An air purifier further comprising a second motor that operates the filter guide, wherein when the sensor detects that the first unwound portion of the filter sheet is at a predetermined contamination level and the button is pressed, the clamp is released and the second motor operates so that the filter guide unwound the roll filter by a predetermined amount, and the portion of the filter sheet previously wound around the roller becomes the first unwound portion, and the predetermined amount reflects the amount passing through the filter guide so that the first unwound portion becomes the second unwound portion.
  8. In claim 7, it further includes a third motor operating the filter cutter and a fourth motor operating the clamp; The above-mentioned fourth motor is; After operation, the second motor stops; The above roll filter is unwound by a predetermined amount; or When at least one of the buttons of the user interface is pressed, the clamp operates automatically to hold the filter sheet in place: When the above-mentioned fourth motor stops after operation; When a predetermined time has elapsed after the second motor has stopped following operation; A predetermined time after the above roll filter has been unwound by a predetermined amount; or When at least one of a hand gesture is detected by a motion sensor or a button on the user interface is pressed, The above third motor operates automatically to move the filter cutter across the filter sheet to remove the above-mentioned second part: an air purifier.
  9. In claim 5, the operation of the fan is automatically stopped before the operation of the filter guide or the filter cutter starts.
  10. In claim 1, the air purifier comprises a user interface including a display that displays at least one of a filter contamination level, air quality, fan speed, or the amount of unwound roll filter.
  11. left wall, The right wall opposite the above left wall, The front extending between the above-mentioned left wall and right wall, At least partially formed air inlet on the front surface, A rear side extending between the above-mentioned left wall and right wall and opposite to the above-mentioned front, Top surface, A base configured to be opposite to the above-mentioned upper surface and to be seated on a flat surface, and A case having an air outlet formed at least partially on at least one of the above-mentioned rear surface, left wall, right wall, or top surface; A fan located inside the case to draw in air through the air inlet and discharge air to the outside of the air outlet; A filter positioned between the fan and the air inlet to filter oil mist from the inhaled air; and A grille is configured to be coupled to the case to cover the air inlet and separated from the case to allow access to the fan and filter. An air purifier comprising an air inlet partially formed on the upper part of the case, and a grille including a front portion and an upper portion that is bent from the front portion so that the grille covers the entire air inlet.
  12. In claim 11, the user interface further comprises a user interface located on the upper surface of the case, wherein the user interface comprises: panel, A plurality of notifications positioned on the panel to display fan speed, filter contamination level, and filter replacement instructions; Multiple LEDs for selectively illuminating the above notification; A motion sensor configured to detect a gesture from the outside of the above case; and An air purifier having at least one button or touch sensor that detects a press; wherein the speed of the fan increases based on the number of hand gestures across the panel detected by the motion sensor.
  13. An air purifier according to claim 12, wherein the grill is coupled to the case, and the latch opens to release the grill from the case based on a button or touch sensor that detects a press.
  14. An air purifier according to claim 11, further comprising at least one magnet located in at least one of the grill or the case to magnetically fix the grill to the case.
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  16. An air purifier according to claim 11, wherein the base has a front portion extending forward from the left and right walls, and the grille includes a front portion and a lower portion that is curved from the front portion and configured to cover the upper part of the front portion of the base.
  17. In Article 12, The above filter is a roll filter having a roller and a filter sheet wound around the roller; The above roller is located in the lower part of the above case; The filter sheet is released from the roller; A portion of the filter sheet is fixed to the upper part of the case, and the filter sheet extends from the roller toward the upper part of the case located between the fan and the air inlet; The filter sheet has a width equal to or greater than the width of the air inlet, and the width of the filter sheet and the air inlet extend in the left-right direction from the left wall to the right wall; and An air purifier in which the release of the above filter is controlled based on at least one of a hand gesture detected by the motion sensor or a press detected by a button or touch sensor.
  18. An air purifier according to claim 17, further comprising a slit formed on the back surface of the case, a filter guide configured to unwind the filter sheet from the roller, and a filter cutter configured to separate a portion of the filter sheet from the remainder of the filter sheet so that the portion of the filter sheet that has passed through the slit is discarded.
  19. A case having a front side, a rear side opposite to the front side, an inlet and an outlet formed on the front side, and a bottom side configured to be seated on a flat surface; A frame located between the front and back of the above case; A fan positioned in the frame to draw in air through the inlet and discharge air to the outside of the outlet; A filter having at least a portion located between the fan and the inlet to filter oil mist from the inhaled air; A grill coupled to the case to filter oil droplets having a size larger than the oil mist and to cover the opening; A latch configured to release the grille from the case to allow access to the filter through the inlet; A user interface configured to detect user instructions to turn on the fan, increase the speed of the fan, and operate the latch to release the grill; and A filter sensor for detecting the contamination level of the above filter; including, The filter is a roll filter having a filter sheet wound around a roller, and the filter sheet is an air purifier that is unwound from the roller by a predetermined length when the filter sensor detects a predetermined level of contamination or higher and when the user interface detects a user instruction to unwrap the roller.
  20. In claim 19, the user interface includes a motion sensor, and the speed of the fan increases by a predetermined amount of speed when the motion sensor detects a predetermined first gesture.

Description

Air cleaner The present invention relates to an air purifier. (0003) Cooking often results in the release of harmful pollutants and carcinogens, such as smoke, oil mist, or other contaminants. Many kitchens have kitchen hoods installed above the stove or cooktop to blow out residual pollutants. However, kitchen hoods are generally not properly maintained and are therefore inefficient. Oil, dust, smoke, and other contaminants can remain in the air after cooking and adhere to cabinets, countertops, or other surfaces, serving as breeding grounds for bacteria such as Staphylococcus, E. coli, and Streptococcus pneumoniae (which can cause meningitis, pneumonia, sinusitis, and other infections). Other harmful substances generated during cooking may include carbon monoxide, nitrogen dioxide, formaldehyde, volatile organic compounds, black carbon, and polycyclic aromatic hydrocarbons, which can pose health risks. (0004) Most fine dust generated during baking or frying is in the form of oil mist, which can adhere to and clump together on a standard air purifier or kitchen hood. This oil mist can block contaminated air from entering the intake grill of the air purifier or air cleaner, thereby reducing the efficiency of the air purifier. If the oil mist adheres near the exhaust grill of the air purifier or air cleaner, the oil spreads further throughout the internal space, increasing contamination. (0005) Republic of Korea Application No. 10-2005-0007482 describes a method in which a UV lamp is placed between a pair of perforated plates and a photocatalyst is coated on the perforated plates so that the photocatalyst is activated by light emitted from the UV light, thereby enhancing the sterilization and deodorization effects of the air. However, there is a problem in that it is difficult to remove contaminants once they are deposited on the photocatalyst. (0006) Korean Registered Patent 10-0582006 discloses a table air purifier for filtering fine smoke (e.g., cigarette smoke). The table air purifier draws in air from the front, discharges air through openings on the left and right, and pushes the air forward. This airflow is destructive or annoying to surrounding users, and the discharged purified air can also mix with contaminated air and be recirculated. The filter inside the table air purifier cannot be easily replaced, and the table air purifier needs to be installed near a wall outlet. (0007) Korean Registered Utility Model 20-0484435 discloses an attachable small air purifier. The attachable small air purifier is not easily cleaned and must be disassembled to be cleaned. (0008) The foregoing references are incorporated herein by reference where appropriate for additional or alternative details, features and/or technical background. FIG. 1 is a front perspective view of an air purifier according to the present embodiment. FIG. 2a is a front exploded perspective view showing the state with the pre-filter removed. FIG. 2b is a front exploded perspective view showing a roll filter. FIG. 3 is an exploded perspective view from the rear end shown from the side. FIG. 4 is an exploded cross-sectional view from the tip as seen from the side. FIG. 5 is a perspective view of a roller assembly. FIG. 6a is a perspective view of a filter cutter. FIG. 6b is a front view of the clamp in the open state. FIG. 6c is a front view of the clamp in a closed state. Fig. 7 is an enlarged perspective view of the clamp. FIG. 8 is a perspective view of the clamp, motor, and rack of a filter cutter. FIG. 9a is an enlarged perspective view of the clamp, motor, and rack of a filter cutter. FIG. 9b is a perspective view of the clamp, motor, rack, and blade housing of a filter cutter. FIG. 10a is an enlarged perspective view showing a clamp and a filter cutter without a frame from the tip. FIG. 10b is an enlarged perspective view showing the clamp, rack, blade housing, blade, and slot of the clamp from the rear end. FIG. 11 is an enlarged view of a filter cutter showing the blade from the tip. FIG. 12 is a perspective view showing the top of the air purifier of FIG. 1 cut off. FIG. 13 is a perspective view of an air purifier according to another embodiment. FIG. 14a is a front view of the air purifier of FIG. 13. FIG. 14b is a side view of the air purifier of FIG. 13. FIG. 15a is a perspective view of the air purifier of FIG. 13. FIG. 15b is a perspective view showing the air purifier and charging pad of FIG. 13. FIG. 16a is a top perspective view of the air purifier of FIG. 13 showing the user interface and motion sensor. Figures 16b through 16h show a notification displayed on a user interface. FIG. 16i is a table illustrating possible implementations of the above notification. FIG. 17 is an exploded view of the air purifier of FIG. 13. FIG. 18a is a lateral perspective view showing a pre-filter mounted on an outer case. FIG. 18b is a lateral perspective view showing the pre-filter raised on the outer case. FIG. 19 is a perspective view showing