This application discloses a filtering system, an air conditioning system that includes the filtering system, and a cleaning method for a filtering system. An example filtering system includes a total liquid inlet, a total liquid outlet, a first Y-shaped strainer, and a second Y-shaped strainer. The first Y-shaped strainer includes a first liquid flow port, a second liquid flow port, and a first drainage port. The first liquid flow port is connected to the total liquid inlet by using a first pipeline, the second liquid flow port is connected to the total liquid outlet by using a second pipeline, and the first drainage port is connected to a first waste liquid area by using a third pipeline. The second Y-shaped strainer includes a third liquid flow port, a fourth liquid flow port, and a second drainage port, the third liquid flow port is connected to the total liquid inlet by using a fourth pipeline.

The invention relates to the field of air purification, sterilization, disinfection, sanitization, removal of particulate matter and harmful gases. A UV light source(102), which is preferably positioned parallel to the flow of air ensuring continuous disinfection of the airstream due to increased residence time, and a filter (106) that is preferably positioned surrounding/around the UV source. In an embodiment, the invention is disclosing a self-cleaning ability that is achieved by using electrostatic fields. In another embodiment, a small, compact self-cleaning purifier/device can be used to sanitize small, enclosed spaces like cars, cabins, etc.

The invention relates to the field of air purification, sterilization, disinfection, sanitization, removal of particulate matter and harmful gases. A UV light source(102), which is preferably positioned parallel to the flow of air ensuring continuous disinfection of the airstream due to increased residence time, and a filter (106) that is preferably positioned surrounding/around the UV source. In an embodiment, the invention is disclosing a self-cleaning ability that is achieved by using electrostatic fields. In another embodiment, a small, compact self-cleaning purifier/device can be used to sanitize small, enclosed spaces like cars, cabins, etc.

A belt-type electric dust collection device capable of automatic cleaning includes a dust collection belt including a plurality of flat parts spaced apart at a predetermined distance, and a plurality of first bent parts and second bent parts formed at both ends of the plurality of flat parts. A plurality of first rollers are provided in a line at the plurality of first bent parts of the dust collection belt, to support and guide the dust collection belt. A plurality of second rollers are provided in a line at the plurality of second bent parts of the dust collection belt. A plurality of electrode plates are provided between the plurality of flat parts of the dust collection belt. A belt cleaning part is provided at one side of the dust collection belt, and a driving part is provided to move the dust collection belt.

A belt-type electric dust collection device capable of automatic cleaning includes a dust collection belt including a plurality of flat parts spaced apart at a predetermined distance, and a plurality of first bent parts and second bent parts formed at both ends of the plurality of flat parts. A plurality of first rollers are provided in a line at the plurality of first bent parts of the dust collection belt, to support and guide the dust collection belt. A plurality of second rollers are provided in a line at the plurality of second bent parts of the dust collection belt. A plurality of electrode plates are provided between the plurality of flat parts of the dust collection belt. A belt cleaning part is provided at one side of the dust collection belt, and a driving part is provided to move the dust collection belt.

An air purification device for purifying air, the air purification device including at least one electrostatic filter unit; at least one air filter module; at least one raw air inlet for the air to be purified; at least one clean air outlet for purified air; and at least one air conveying device for conveying the air drawn in through the at least one raw air inlet for the air to be purified in a main flow direction through the at least one electrostatic filter unit and through the at least one air filter module to at least one clean air outlet for the purified air, wherein the air purification device is switchable between an air purification operation, in which the air flows in a main flow direction.

An air purification device for purifying air, the air purification device including at least one electrostatic filter unit; at least one air filter module; at least one raw air inlet for the air to be purified; at least one clean air outlet for purified air; and at least one air conveying device for conveying the air drawn in through the at least one raw air inlet for the air to be purified in a main flow direction through the at least one electrostatic filter unit and through the at least one air filter module to at least one clean air outlet for the purified air, wherein the air purification device is switchable between an air purification operation, in which the air flows in a main flow direction.

Disclosed is an indoor unit for an air conditioner. The indoor unit for the air conditioner according to the present invention includes: a cabinet assembly forming an external appearance of the indoor unit and having an air suction port formed in a rear of the cabinet assembly; a filter module disposed at the air suction port to filter dust contained in air being introduced through the air suction port; a filter cleaner configured to move upward and downward in a rear of the filter module to remove foreign substances stuck in the filter module; a guide rail vertically disposed on one side of the filter module and configured to guide upward and downward movement of the filter cleaner, wherein the filter cleaner comprises: a mobile gear configured to rotate while engaged with the guide rail to move the filter cleaner upward and downward with respect to the filter module, a gear motor configured to rotate the mobile gear, an agitator configured to rotate in friction with the filter module, a dust container disposed downward of the agitator and collecting foreign substances separated from the filter module due to the rotation of the agitator, and a guide roller bringing the filter cleaner into close contact with the filter module so that part of the agitator rotates while in contact with the filter module.

An information providing system provides information relating to dirt in a drain pan of an air conditioner. The information providing system is provided with a computer which is connected to a camera and a user terminal. The computer acquires image data of a target object imaged by the camera, identifies a dirty region in the image data, creates dirt-related information in which the dirty region is highlighted in the image data, and outputs the dirt-related information to the user terminal.

An information providing system provides information relating to dirt in a drain pan of an air conditioner. The information providing system is provided with a computer which is connected to a camera and a user terminal. The computer acquires image data of a target object imaged by the camera, identifies a dirty region in the image data, creates dirt-related information in which the dirty region is highlighted in the image data, and outputs the dirt-related information to the user terminal.