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KR-20260064942-A - PREFILTER APPARATUS FOR AIR CONDITIONER BASED ON INTERNET OF THINGS

KR20260064942AKR 20260064942 AKR20260064942 AKR 20260064942AKR-20260064942-A

Abstract

The present invention relates to an IoT-based pre-filter device for an air conditioner that is formed with a deep filtration structure to dramatically increase the service life and improve durability so as to properly prevent damage or breakage under high humidity and high pressure conditions, and allows the replacement cycle of the filter body to be easily checked through the Internet of Things. The pre-filter device comprises: a square frame forming a square border; a filter body fitted inside the square frame and formed of a synthetic resin foam to form a plurality of pores, which filters foreign substances contained in the air passing through the pores; and an IoT device unit that detects the pressure difference of the air passing through the filter body through a differential pressure sensor installed on the square frame and transmits the pressure difference information to the outside through a wired/wireless communication device installed on the square frame.

Inventors

  • 김은숙
  • 김경중
  • 박상범
  • 김관의

Assignees

  • 주식회사 지피솔루션

Dates

Publication Date
20260508
Application Date
20241030

Claims (7)

  1. A square frame (10) forming a square border; A filter body (20) that is fitted into the inner side of the above square frame (10), is formed of a synthetic resin foam to form a plurality of pores, and filters foreign substances contained in the air passing through the pores; It includes an IoT device unit (30) that detects the pressure difference of air passing through the filter body (20) through a differential pressure sensor (31) installed in the square frame (10) and transmits the pressure difference information to the outside through a wired/wireless communication device (32) installed in the square frame (10). The above filter body (20) is, A first filter (21) fitted into the front inner side of the square frame (10) above, and A second filter (22) fitted into the inner side of the square frame (10) behind the first filter (21), and A third filter (23) fitted into the inner side of the square frame (10) behind the second filter (22), and An anti-adhesion layer (24) formed by applying or coating to the front surface of the first filter (21) into which air enters, and which minimizes the adhesion of foreign substances to the front surface of the first filter (21), An IoT-based pre-filter device for an air conditioner characterized by including
  2. In paragraph 1, The above anti-adhesion layer (24) is, An IoT-based pre-filter device for an air conditioner, characterized by having a structure formed of a fluoropolymer material with multiple fine protrusions formed on the outer side, or a structure formed of a synthetic resin material with a slip surface having minimized friction.
  3. In paragraph 1, The first filter (21), the second filter (22), and the third filter (23) are, A filter surface (25) formed in a rounded and bumpy manner on the respective front surfaces of the first filter (21), second filter (22), and third filter (23) into which air enters, An IoT-based pre-filter device for an air conditioner characterized by including additional features.
  4. In paragraph 1, The above square frame (10) is, It further includes a plurality of fixing wires (11) installed with both ends connected and intersecting each other on the inner side of the square frame (10) to support and fix the front and back surfaces of the filter body (20). The first filter (21) above is, Having pores of 15 to 35 PPI, The second filter (22) above is, It has pores of 25 to 45 PPI, and The above third filter (23) is, An IoT-based pre-filter device for an air conditioner characterized by having pores of 35 to 55 PPI.
  5. In paragraph 1, The above filter body (20) is, A first space portion (26) formed as an empty space between the first filter (21) and the second filter (22) on the inner side of the square frame (10), and A second space (27) formed as an empty space between the second filter (22) and the third filter (23) on the inner side of the square frame (10), An IoT-based pre-filter device for an air conditioner characterized by including additional features.
  6. In paragraph 5, The above filter body (20) is, A flow velocity increasing plate (28) is provided in close contact with the back surface of the second filter (22) on the inner side of the second space (27), formed of a synthetic resin foam to form a plurality of pores, and increases the flow velocity of air passing through the pores. An IoT-based pre-filter device for an air conditioner characterized by including additional features.
  7. In paragraph 6, The size of the pores of the above flow velocity increasing plate (28) is, The pore size is relatively larger than that of the second filter (22), and The above flow velocity increasing plate (28) is, An IoT-based pre-filter device for an air conditioner, characterized by a structure in which the size of the pores gradually decreases from the front to the back of the above-mentioned flow velocity increasing plate (28).

Description

IoT-based pre-filter apparatus for air conditioners {PREFILTER APPARATUS FOR AIR CONDITIONER BASED ON INTERNET OF THINGS} The present invention relates to a pre-filter device for an air conditioner, and more specifically, to an IoT-based pre-filter device for an air conditioner that is formed with a deep filtration structure to dramatically increase the service life and improve durability so as to properly prevent damage or breakage under high humidity and high pressure conditions, and allows the replacement cycle of the filter body to be easily checked through the Internet of Things. Generally, air conditioners regulate the temperature, humidity, and airflow distribution of a space to suit human activity while simultaneously removing dust, bacteria, and odors to maintain a pleasant indoor environment. Such units are essential for large buildings, general hospitals, factories, subways, and tunnels, and are also widely installed in general offices and homes for reasons such as improved work efficiency and health through the provision of comfortable indoor spaces. In particular, air conditioners can be considered essential environmental equipment for operating rooms or sterile rooms in large general hospitals, as well as for clean rooms required for high-precision processes such as semiconductors. These air conditioners include a ventilation system for ventilation between the indoor and outdoor spaces and a heating and cooling device for indoor heating and cooling; when ventilating air using a blower fan, they are designed to filter out dust or contaminated air by passing it through an air filter. As such, air filters are essential components of air conditioners and vary in size and type depending on the installation environment. Typically, filters for air conditioners include mesh filters, pre-filters, medium filters, HEPA filters, and ULPA filters, which are sequentially provided to form an air filter. The above mesh filter is a mesh-shaped filter mainly installed in louvers, grilles, or household air conditioners, and filters out hair or large dust particles. The above pre-filter filters out small dust particles and is used as a pre-treatment filter for protecting the Clean Room Final Filter in factories. The above medium filter is used as a next stage after the pre-filter in a cleanroom or as a pretreatment for the final filter. The above HEPA filter is used as a final filter to create a cleanroom and can filter out fine bacteria or dust larger than 0.3 micrometers. The above ULPA filter is a final filter used in a super cleanroom and can filter out dust or viruses larger than 0.1 micrometers. Here, nonwoven fabrics, which have low manufacturing costs, have been widely used as pre-filters. Starting from simple initial structures, technology has steadily evolved in terms of layer structure, bonding methods, and materials. Nonwoven fabric refers to a material in which irregular fibers made of pulp are laminated in a network structure. In particular, recent pre-filters use nonwoven fabrics consisting of fibers ranging in size from tens to hundreds of micrometers, obtained through conventional nonwoven fabric manufacturing processes such as melt browning, spun bonding, and needle punching. However, the conventional technology described above had the following problems. Conventional pre-filters have a structure made of laminated pulp fibers, which has the problem of a very short service life because the outer surface is relatively easily clogged by foreign substances, and consequently, frequent replacement is required, resulting in a relatively large amount of time, manpower, and cost for maintenance. In addition, conventional pre-filters are made of pulp material, which is vulnerable to moisture and humidity and has relatively poor durability, so there was a problem that they were easily damaged or broken by external environments with high humidity conditions such as rain and fog, and external environments with high pressure conditions caused by high wind speeds. FIG. 1 is a schematic perspective view of a pre-filter device according to the present invention. FIG. 2 is a schematic front view of a pre-filter device according to the present invention, Fig. 3 is an enlarged view of the main part of Fig. 2, FIG. 4 is a schematic rear view of a pre-filter device according to the present invention, Fig. 5 is an enlarged view of the main part of Fig. 4, FIG. 6 is an enlarged longitudinal section view of a schematic key part of a pre-filter device according to the present invention, FIG. 7 is an enlarged longitudinal section view of a schematic key part of a prefilter device according to another embodiment of the present invention. Preferred embodiments of the present invention are described in more detail below with reference to the accompanying drawings. However, it should be understood that the present invention may be implemented in a number of different forms and is not limited to the described embodiments. FIGS