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KR-102960967-B1 - Air cleaner

KR102960967B1KR 102960967 B1KR102960967 B1KR 102960967B1KR-102960967-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. An outer case having a first opening and a second opening; A grille coupled to the outer case to cover the first opening and having a plurality of openings through which air can be sucked; A roll filter positioned behind the grill and having a roller and a filter sheet wound around the roller, wherein a first unwound portion of the filter sheet extends from the roller and faces the grill; A fan positioned behind the roll filter and configured to draw in air through the opening of the grille and discharge air outside the second opening; An internal support located inside the above-mentioned outer case; and It includes a frame supported by the internal support member, and An air purifier in which the fan is located within the frame and the roller is supported by at least one of the internal support or the frame.
  2. An air purifier according to claim 1, wherein the grill filters oil droplets floating in the air of a first size and the first loosened portion of the filter sheet filters oil mist of a second size smaller than the first size.
  3. An air purifier according to claim 2, further comprising a second filter positioned between the roll filter and the fan and configured to filter foreign substances having a third size smaller than the second size.
  4. In claim 3, the second filter is an air purifier that is a carbon filter for filtering odors.
  5. An air purifier according to claim 1, wherein the grill is made of metal and the roll filter is made of at least one of a fibrous material or a porous material.
  6. In claim 5, the fibrous material is an air purifier that is one of paper, fabric, or nanofiber.
  7. In claim 5, the porous material is an air purifier having ultrafine pores.
  8. An air purifier according to claim 1, wherein the roll filter is located within a filter cartridge and the outer case has an upper opening for inserting and separating the filter cartridge into and out of the outer case.
  9. delete
  10. An air purifier according to claim 1, wherein the roller is located at the bottom of the outer case, the first unwound portion of the filter sheet extends upward from the roller, and a portion of the filter sheet is fixed to the top of the fan.
  11. An air purifier according to claim 1, further comprising a first roller and a second roller, wherein a first unwound portion of the filter sheet is supplied between the first roller and the second roller when the first roller and the second roller rotate in opposite directions and are pulled from the roller so that a second unwound portion of the filter sheet faces the grill.
  12. An air purifier according to claim 11, further comprising a cover mounted on the back surface of the outer case, wherein the cover comprises a slit, and the first roller and the second roller rotate until the end of the first unwound portion of the filter sheet passes through the slit.
  13. An air purifier according to claim 11, further comprising a clamp that grips a portion of the filter sheet between the first and second unraveled portions of the filter sheet.
  14. An air purifier according to claim 13, further comprising a cover mounted on the back surface of the outer case, wherein the clamp is positioned between the cover and the first and second rollers.
  15. An air purifier according to claim 11, further comprising a cutter having a blade for separating a first unwound portion from the filter sheet.
  16. In claim 1, it further includes a display and at least one sensor, wherein the at least one sensor is: Contamination level of the above roll filter; The difference in airflow between the inhaled air and the exhaled air; or An air purifier that detects at least one of the air quality of discharged air, and the display shows what is detected by the sensor.
  17. External case having an air inlet and an air outlet; A grille coupled to the outer case to cover the air inlet into which air is drawn and configured to filter oil droplets in the air of a first size; A first filter comprising at least one of a fibrous material or a porous material positioned behind the grill and configured to filter oil mist containing particles of a second size smaller than the first size; A second filter located behind the first filter and configured to filter out odors; A fan positioned behind the second filter to draw in air through the grille and to discharge air to the outside of the air outlet; and The above-mentioned fan, the above-mentioned first filter, and the above-mentioned second filter are supported by a frame, and The above frame is an air purifier that can be separated by separating the grille so that at least one of the first filter and the second filter can be replaced.
  18. An air purifier according to claim 17, further comprising a cover having an opening and a slit that serve as an air outlet, wherein the first filter comprises a roller and a filter sheet located at the bottom of the outer case, the first portion of the filter sheet is wound around the roller and the second portion of the filter sheet is optionally fixed to the top of the fan and the bottom of the outer case, and when the roller is unwound, the first portion faces the grille and the second portion of the filter sheet passes over the top of the fan and passes through the slit.
  19. In claim 17, the outer case includes an opening perpendicular to the air inlet, the first filter is positioned on a frame installed inside the outer case, and the frame is separated through the opening so that the first filter is replaced with a new first filter.
  20. delete

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