Abstract: A hairdryer is disclosed. The hairdryer according to an embodiment of the present invention comprises a body part and a handle part, wherein the body part includes a body extension part which extends into a gas flow channel, and the handle part includes: a handle case which forms at least a part of the appearance of the handle part, in which the gas flow channel is formed, and into which the body extension part is inserted; a fan unit which is provided in the gas flow channel to move gas; and a handle frame which is provided in the gas flow channel, is coupled to the fan unit, and is coupled to the body extension part to fix the fan unit.

Abstract: The cleaner according to the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from the air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker, and configured to control the output of the speaker to increase a level of the noise of at least one range of the frequency range of 2000 Hz or more and 8000 Hz or less.

Abstract: A refrigerator includes a noise reduction device and a machine room that accommodates a condenser and a compressor. The noise reduction device includes a sensing unit configured to measure noise generated from the machine room of the refrigerator and a generating unit configured to output a sound signal having a frequency canceling or reducing the noise. The machine room is defined by a case that has a communication portion configured to communicate a fluid between an inside of the case and an outside of the case to thereby exchange heat between the fluid and the condenser and between the fluid and the compressor.

Abstract: A hair dryer is provided that may include a main body, a handle, a flow path, and a fan. The handle may include a handle case and a handle frame. The handle frame may include a flow stabilizer located upstream of the fan. A fluid flowing in through an inlet may pass through the flow stabilizer to flow to the fan. A sound absorbing space to reduce noise may be formed between an inner circumferential surface of the handle case and the flow stabilizer.

Abstract: A hair dryer is provided that may include a main body including a discharge outlet through which fluid may be discharged outside of the main body, a handle that extends from the main body, including an inlet through which fluid enters the handle, a flow path that extends from the inlet to the discharge outlet, a fan provided inside of the handle, and provided in the flow path to blow the fluid, and a noise attenuation space provided inside of the handle, and to surround at least a portion of the fan along an inner circumferential direction of the handle, attenuating noise generated by the fan.

Abstract: A hair dryer is provided that may include a main body including a discharge outlet through which fluid may be discharged outside of the main body, a handle that extends from the main body, including an inlet through which fluid enters the handle, a flow path that extends from the inlet to the discharge outlet, a fan provided inside of the handle, and provided in the flow path to blow the fluid, and a noise attenuation space provided inside of the handle, and to surround at least a portion of the fan along an inner circumferential direction of the handle, attenuating noise generated by the fan.

Abstract: A hair dryer is provided that may include a main body, a handle, a flow path, and a fan. The handle may include a handle case and a handle frame. The handle frame may include a flow stabilizer located upstream of the fan. A fluid flowing in through an inlet may pass through the flow stabilizer to flow to the fan. A sound absorbing space to reduce noise may be formed between an inner circumferential surface of the handle case and the flow stabilizer.

Abstract: A refrigerator includes a noise reduction device. The noise reduction device measures noise generated from a machine room of the refrigerator and outputs a sound signal having a frequency canceling or reducing the noise.

Abstract: To achieve the objects described above, the cleaner according to some embodiments of the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker and a detection unit detecting noise or vibration, and configured to cause an output of the speaker to be reduced a level of the noise of at least one frequency range of 1500 Hz or less the noise generated when the fan module is operated, based on the detection signal of the detection unit. wherein the main body includes an exhaust outlet through which air in the airflow path is exhausted and a sound outlet through which the sound of the speaker is exhausted, wherein the exhaust outlet and the sound outlet look the same direction relative to the main body.

Abstract: The cleaner according to the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from the air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker, and configured to control the output of the speaker to increase a level of the noise of at least one range of the frequency range of 2000 Hz or more and 8000 Hz or less.

Abstract: A suction unit includes a suction motor for generating air flow; a noise reduction unit which surrounds the suction motor and acts as a resonator in order to reduce noise generated during the operation of the suction motor; and a motor chamber which surrounds the noise reduction unit. The noise reduction unit includes an air flow path which provide a path of air flowing by the suction motor, a noise reduction chamber for eliminating the noise of at least one frequency band, and at least one communicating hole which causes sound wave of the noise to enter the noise reduction chamber. The air flow path is divided from the noise reduction chamber and thus the sound wave of the noise enters the noise reduction chamber through the communicating hole during a process in which air passes through the air flow path.

Abstract: Provided is a vacuum cleaner. The vacuum cleaner includes a cleaner body and a dust container separably mounted on the cleaner body. The dust container includes a dust collection body including a first chamber in which air and dust are separated from each other and a second chamber in which the dust separated in the first chamber are stored and a pressing member rotatably reciprocated between the first and second chambers within the dust collection body to compress the dust stored in the second chamber in one direction while moving from the first chamber to the second chamber.

Abstract: A suction unit includes a suction motor for generating air flow; a noise reduction unit which surrounds the suction motor and acts as a resonator in order to reduce noise generated during the operation of the suction motor; and a motor chamber which surrounds the noise reduction unit. The noise reduction unit includes an air flow path which provide a path of air flowing by the suction motor, a noise reduction chamber for eliminating the noise of at least one frequency band, and at least one communicating hole which causes sound wave of the noise to enter the noise reduction chamber. The air flow path is divided from the noise reduction chamber and thus the sound wave of the noise enters the noise reduction chamber through the communicating hole during a process in which air passes through the air flow path.

Abstract: A vacuum cleaner includes a cleaner body and a dust container separably mounted on the cleaner body. The dust container includes a dust collection body including an opening, a wall, and a dust separation part. A cover covers the opening of the dust collection body. An air guide is disposed at the dust collection body, the air guide having an opening provides an inflow hole through which air separated from dust in the dust separation part is introduced, and a filter accommodated in the air guide filters the air separated from the dust. When the cover uncovers the opening of the dust collection body, the filter is visible through the opening of the air guide.

Abstract: Provided is a vacuum cleaner. The vacuum cleaner includes a cleaner body and a dust container separably mounted on the cleaner body. The dust container includes a dust collection body including a first chamber in which air and dust are separated from each other and a second chamber in which the dust separated in the first chamber are stored and a pressing member rotatably reciprocated between the first and second chambers within the dust collection body to compress the dust stored in the second chamber in one direction while moving from the first chamber to the second chamber.

Abstract: A vacuum cleaner includes a cleaner body and a dust container separably mounted on the cleaner body. The dust container includes a dust collection body including an opening, a wall, and a dust separation part. A cover covers the opening of the dust collection body. An air guide is disposed at the dust collection body, the air guide having an opening provides an inflow hole through which air separated from dust in the dust separation part is introduced, and a filter accommodated in the air guide filters the air separated from the dust. When the cover uncovers the opening of the dust collection body, the filter is visible through the opening of the air guide.