An ultrasonic atomizer for maintaining a constant temperature of an ultrasonic vibration generating unit by decreasing a temperature at the periphery of the ultrasonic vibration generating unit even under an environment in which the ultrasonic vibration generating unit is exposed to a high temperature is provided. The ultrasonic atomizer includes: an ultrasonic vibration generating unit which generates ultrasonic waves and atomizes a spray material; a nozzle unit; a housing; and a heat exchange unit which surrounds the ultrasonic vibration generating unit, includes a separation wall which divides the heat exchange unit into heat exchange chambers, and cools heat generated from the ultrasonic vibration generating unit, in which the heat exchange chambers include: a heating chamber; and a cooling chamber which surrounds the heating chamber, and includes a cooling space by being isolated with the heat exchange unit abutting the heating chamber between the cooling chamber and the heating chamber.

A flow disturbance apparatus includes: a refrigerant pipe having a flow space in which refrigerant flows; and at least one disturbance member disposed inside the refrigerant pipe that is vibrated by the flow of refrigerant in the refrigerant pipe to disturb the refrigerant flowing in the refrigerant pipe.

Systems and methods for disrupting a flow of refrigerant within a heat exchanger assembly. One embodiment provides a method that includes receiving, with a controller, a first signal from a first sensor, the first signal indicative of a pressure of the refrigerant flowing through the heat exchanger. The method includes setting, with the controller, an operating frequency of a valve based on the first signal. The operating frequency includes a rate at which the valve actuates between a first valve position that sets a first refrigerant flow rate through the heat exchanger and a second valve position that sets a second refrigerant flow rate through the heat exchanger. The method includes controlling, with the controller, operation of a solenoid to actuate the valve at the operating frequency.

A flow chamber, a cooling system and a method are described. The flow chamber includes an upper chamber including a top wall, an actuator, and a lower chamber. The actuator is located distally from the top wall. The lower chamber receives fluid from the upper chamber when the actuator is actuated. The top wall includes at least one cavity therein. The cooling system utilizes cooling cells including the flow chamber. The method includes driving the actuator at a frequency that directs fluid through the flow chamber.

A flow chamber, a cooling system and a method are described. The flow chamber includes an upper chamber including a top wall, an actuator, and a lower chamber. The actuator is located distally from the top wall. The lower chamber receives fluid from the upper chamber when the actuator is actuated. The top wall includes at least one cavity therein. The cooling system utilizes cooling cells including the flow chamber. The method includes driving the actuator at a frequency that directs fluid through the flow chamber.

A flow disturbance apparatus includes: a refrigerant pipe having a flow space in which refrigerant flows; and at least one disturbance member disposed inside the refrigerant pipe that is vibrated by the flow of refrigerant in the refrigerant pipe to disturb the refrigerant flowing in the refrigerant pipe.

A lamp device applied to a vehicle may include a flow change generation device which accelerates an air flow in a space around a heat sink dissipating the heat due to the radiation of the light of a light source of an optical module to form the flow enhancing heat-dissipation efficiency of the heat sink, and generates the flow by the shake due to any one of an inertia force of a vehicle, a magnetic force, and a combination of the inertial force of the vehicle and the magnetic force, enhancing heat-dissipation efficiency by the heat dissipation using a change in the flow around a heat source together with the heat dissipation due to the heat sink.

Volumetric resistance blowers are disclosed herein. An example volumetric resistance blower includes a housing, a motor, and a rotor disposed within the housing and rotated by the motor. The rotor is constructed of metal foam.

The heat sinks with vibration enhanced heat transfer are heat sinks formed from a first body of high thermal conductivity material. The first body of high thermal conductivity material is received within a thermally conductive housing such that at least one contact face of the first body of high thermal conductivity material is exposed, forming a direct contact interface with a heat source requiring cooling. The heat source requiring cooling may be a liquid heat source, including but not limited to water. The thermally conductive housing is disposed such that at least one contact face of the thermally conductive housing is in direct contact with the vibrating base. The vibrating base applies oscillating waves to the heat sink, thereby increasing heat transfer between the heat source and the heat sink.

The heat sinks with vibration enhanced heat transfer are heat sinks formed from a first body of high thermal conductivity material. The first body of high thermal conductivity material is received within a thermally conductive housing such that at least one contact face of the first body of high thermal conductivity material is exposed, forming a direct contact interface with a heat source requiring cooling. The heat source requiring cooling may be a liquid heat source, including but not limited to water. The thermally conductive housing is disposed such that at least one contact face of the thermally conductive housing is in direct contact with the vibrating base. The vibrating base applies oscillating waves to the heat sink, thereby increasing heat transfer between the heat source and the heat sink.