Abstract: An apparatus for measuring a depth of a tread groove may include: a camera module capturing a video including an upper end portion of a tire while rotating around an upper end portion of the tire having a plurality of tread grooves, the video including a plurality of frames; a control module obtaining, based on the plurality of frames, a cross-sectional width of the tire in units of pixels by adding widths and depths of each of the plurality of tread grooves in units of pixels, a width of an inner block in units of pixels, and a width of an outer block in units of pixels, the inner and outer blocks are disposed on the tire; and a conversion module converting the depth of the tread groove in units of pixels into the depth in units of pixels.

Abstract: The present invention relates to a polyester sound absorption material having improved moldability and decreased weight and a method of manufacturing a molded product using the same, and more particularly to a polyester sound absorption material, which is capable of integrally molding a skin member and a sound absorption material using a felt including a polyester base fiber, a low-melting-point polyester adhesive fiber and a polyester hollow fiber, without the need to attach an additional sound absorption pad onto a skin member.

Abstract: An air conditioner according to the present invention has a structure driving a compressor and a pump, simultaneously, in a low-temperature cooling environment in which the outdoor temperature is lower than the indoor temperature.

Abstract: A heat pump performs a simultaneous air-conditioning and heating operation through the addition of a flow path switching apparatus. The heat pump may include a plurality of outdoor units, a plurality of indoor units, and a plurality of flow path switching apparatuses that switch a flow path between an outdoor unit and an indoor unit. A refrigerant flow path may be formed from the outdoor unit to the indoor unit via a high-pressure gas pipe. The flow path switching apparatuses may switch a flow path so that a refrigerant flow path is formed from the indoor unit to the outdoor unit via a low-pressure gas pipe. The heat pump may further include an indoor unit mode controller that is connected to the plurality of outdoor units through a liquid pipe, and which is connected to each of the plurality of flow path switching apparatuses.

Abstract: An air conditioner according to the present invention has a structure driving a compressor and a pump, simultaneously, in a low-temperature cooling environment in which the outdoor temperature is lower than the indoor temperature, thereby enabling efficient and stable cooling.

Abstract: An air conditioner of the present invention includes: an outdoor unit having an outdoor heat exchanger and a compressor installed therein; a plurality of indoor units connected to the outdoor unit and having an indoor heat exchanger installed therein; a four-way valve provided on a discharge part side of the compressor; a refrigerant tube having first to third refrigerant tubes and connecting the four-way valve and the indoor heat exchanger, in which the first refrigerant tube is branched from between the four-way valve and the outdoor heat exchanger such that some of a refrigerant discharged from the compressor is fed into the indoor heat exchanger while bypassing the outdoor heat exchanger, the second refrigerant tube is connected to the four-way valve to feed all of the refrigerant discharged from the compressor into the indoor heat exchanger, and the third refrigerant tube is connected to the second refrigerant tube in parallel; and a heat pump valve provided at the third refrigerant tube to selectively c

Abstract: An apparatus for detecting an oil level and a method for controlling the same, an apparatus for detecting oil flow and a method for controlling the same, and a method for controlling oil return using the detected oil level and the detected oil flow are disclosed. The level of oil stored in a compressor is measured at two or more positions. The frequency comparison scheme using two electrodes can correctly detect the level of oil stored in the compressor, a refrigerant state, and the level of mixed oils, and can determine an internal state of the compressor and a normal or abnormal state of the oil return system, such that the oil return control can be actively controlled. The flow of oil in the oil return pipe is detected so as to determine whether the oil is normally supplied in real time, such that a malfunction of the compressor is prevented and a valve state can be checked.

Abstract: Embodiments of the present disclosure relate to an outdoor unit of an air conditioner configured to cool a heating unit by making contact with the heating unit, a cooling unit applied thereto, and a method for manufacturing the cooling unit. An outdoor unit of an air conditioner comprises a compressor configured to compress refrigerant; a condenser configured to condense the refrigerant discharged from the compressor; a control box provided with an electronic component configured to control an outdoor unit of an air conditioner; and a cooling unit configured to cool a heating unit by making contact with the heating unit of the electronic component, wherein the cooling unit comprises a heat radiating member having one side thereof make contact with the heating unit; and a refrigerant pipe extended by penetrating through the heat radiating member and in which refrigerant is moved.

Abstract: An air conditioner, having an outdoor unit and an indoor unit, to perform a heating operation and a defrosting operation, the air conditioner including a detection unit to detect a state of at least one selected between the outdoor unit and the indoor unit and to output the detected value, a controller to determine whether the air conditioner is in a stable state when the defrosting operation is completed and, upon determining that the air conditioner is in the stable state, to control the detected value output from the detection unit to determine entry time of the next defrosting operation, and a storage unit to store a value detected in the stable state. The entry time of the defrosting operation is accurately determined, thereby minimizing the number of times of the defrosting operation during the heating operation.

Abstract: Embodiments of the present disclosure relate to an outdoor unit of an air conditioner configured to cool a heating unit by making contact with the heating unit, a cooling unit applied thereto, and a method for manufacturing the cooling unit. An outdoor unit of an air conditioner comprises a compressor configured to compress refrigerant; a condenser configured to condense the refrigerant discharged from the compressor; a control box provided with an electronic component configured to control an outdoor unit of an air conditioner; and a cooling unit configured to cool a heating unit by making contact with the heating unit of the electronic component, wherein the cooling unit comprises a heat radiating member having one side thereof make contact with the heating unit; and a refrigerant pipe extended by penetrating through the heat radiating member and in which refrigerant is moved.

Abstract: An air conditioner of the present invention includes: an outdoor unit having an outdoor heat exchanger and a compressor installed therein; a plurality of indoor units connected to the outdoor unit and having an indoor heat exchanger installed therein; a four-way valve provided on a discharge part side of the compressor; a refrigerant tube having first to third refrigerant tubes and connecting the four-way valve and the indoor heat exchanger, in which the first refrigerant tube is branched from between the four-way valve and the outdoor heat exchanger such that some of a refrigerant discharged from the compressor is fed into the indoor heat exchanger while bypassing the outdoor heat exchanger, the second refrigerant tube is connected to the four-way valve to feed all of the refrigerant discharged from the compressor into the indoor heat exchanger, and the third refrigerant tube is connected to the second refrigerant tube in parallel; and a heat pump valve provided at the third refrigerant tube to selectively c

Abstract: An apparatus for detecting an oil level and a method for controlling the same, an apparatus for detecting oil flow and a method for controlling the same, and a method for controlling oil return using the detected oil level and the detected oil flow are disclosed. The level of oil stored in a compressor is measured at two or more positions. The frequency comparison scheme using two electrodes can correctly detect the level of oil stored in the compressor, a refrigerant state, and the level of mixed oils, and can determine an internal state of the compressor and a normal or abnormal state of the oil return system, such that the oil return control can be actively controlled. The flow of oil in the oil return pipe is detected so as to determine whether the oil is normally supplied in real time, such that a malfunction of the compressor is prevented and a valve state can be checked.

Abstract: A heat pump performs a simultaneous air-conditioning and heating operation through the addition of a flow path switching apparatus. The heat pump may include a plurality of outdoor units, a plurality of indoor units, and a plurality of flow path switching apparatuses that switch a flow path between an outdoor unit and an indoor unit. A refrigerant flow path may be formed from the outdoor unit to the indoor unit via a high-pressure gas pipe. The flow path switching apparatuses may switch a flow path so that a refrigerant flow path is formed from the indoor unit to the outdoor unit via a low-pressure gas pipe. The heat pump may further include an indoor unit mode controller that is connected to the plurality of outdoor units through a liquid pipe, and which is connected to each of the plurality of flow path switching apparatuses.

Abstract: An air conditioner, having an outdoor unit and an indoor unit, to perform a heating operation and a defrosting operation, the air conditioner including a detection unit to detect a state of at least one selected between the outdoor unit and the indoor unit and to output the detected value, a controller to determine whether the air conditioner is in a stable state when the defrosting operation is completed and, upon determining that the air conditioner is in the stable state, to control the detected value output from the detection unit to determine entry time of the next defrosting operation, and a storage unit to store a value detected in the stable state. The entry time of the defrosting operation is accurately determined, thereby minimizing the number of times of the defrosting operation during the heating operation.

Abstract: A liquid crystal display device strengthens an adhesive force of an electrostatic prevention means without increasing a thickness of the liquid crystal display device by bending part of the bottom cover thereof into a “C”-shape, thereby securing a space for adhering an upper indium tin oxide (ITO) of the color filter substrate and the electrostatic prevention means, in a small-sized model having an in-plane switching (IPS) mode liquid crystal panel, and the liquid crystal display device may include a liquid crystal panel configured with a color filter substrate and an array substrate to display an image; a backlight assembly provided at a rear surface of the liquid crystal panel to supply light to the liquid crystal panel; a support main for accommodating and fixing the liquid crystal panel and the backlight assembly; a bottom cover fastened to the support main to include at least one bending portion in which part thereof is bent in a “C”-shape; and a electrostatic prevention means adhered to cover part of an

Abstract: A liquid crystal display device strengthens an adhesive force of an electrostatic prevention means without increasing a thickness of the liquid crystal display device by bending part of the bottom cover thereof into a “C”-shape, thereby securing a space for adhering an upper indium tin oxide (ITO) of the color filter substrate and the electrostatic prevention means, in a small-sized model having an in-plane switching (IPS) mode liquid crystal panel, and the liquid crystal display device may include a liquid crystal panel configured with a color filter substrate and an array substrate to display an image; a backlight assembly provided at a rear surface of the liquid crystal panel to supply light to the liquid crystal panel; a support main for accommodating and fixing the liquid crystal panel and the backlight assembly; a bottom cover fastened to the support main to include at least one bending portion in which part thereof is bent in a “C”-shape; and a electrostatic prevention means adhered to cover part of an