Samsung Electronics Co., Ltd.

Il Ju Mun

Min Soo Kim

Woo Hyek Choi

Keon Kuk

Jin Han Kim

Jin Su Park

Sung Wook Kang

Kyu Ho Shin

In Su Lee

Eung Yeoul Yoon

Young Su Lee

Kwang Hyok Park

Young Dae Ko

Hyun Woo Yu

Jae Yun Lee

A magnetic cooling apparatus may include a fixing module and a rotation module rotatably provided at the fixing module. The fixing module includes a plurality of magnetic regenerators and a thermal fluid supply apparatus allowing thermal fluid to exchange with the plurality of magnetic regenerators, and the thermal fluid supplying apparatus is configured to operate by the rotation module without an additional configuration, which enables the magnetic cooling apparatus to have a similar configuration.

Magnetic cooling apparatus and magnetic refrigerating system having the same

A magnetic cooling apparatus including a plurality of magnetic regenerators including a plurality of magnetocaloric materials to emit heat when magnetized and to absorb heat when demagnetized. The magnetic regenerators are rotatably disposed on a circumference having a predetermined radius, at least one coil is disposed on the circumference and coupled to the magnetic regenerators, and a plurality of permanent magnets is provided inside and outside the circumference to generate a magnetic field to magnetize or demagnetize the magnetic regenerators. The at least one coil interacts with the magnetic field generated by the permanent magnets to rotate the magnetic regenerators. The coil interacting with the magnetic field to magnetize or demagnetize the magnetic regenerators is coupled to the magnetic regenerators such that the magnetic regenerators reciprocate or rotate, thereby minimizing a size of the magnetic cooling apparatus, relative to the use of a motor. In addition, a member to switch a channel of a heat transfer fluid directly performs heat transfer between the heat transfer fluid and an external fluid, thereby minimizing heat loss.

Magnetic cooling apparatus

A magnetic cooling apparatus having a plurality of cooling modules, where each of the cooling modules includes at least one magnetic regenerator allowing a heat transfer fluid to pass therethrough and filled with a magnetocaloric material; and a fluid supply device to supply the heat transfer fluid into the magnetic regenerator. The cooling modules are rotatably arranged in a circumferential direction.

Magnetic cooling apparatus and method of controlling the same

A magnetic cooling apparatus includes first magnetic regenerators that pass a first heat transfer fluid and a first magnetocaloric material, second magnetic regenerators that pass a second heat transfer fluid having a relative lower freezing point than the first heat transfer fluid and a second magnetocaloric material having a relative lower Curie temperature than the first magnetocaloric material, a magnet that applies a magnetic field to the first magnetic regenerators and the second magnetic regenerators, a hot side heat exchanger allowing the first heat transfer fluid to emit heat, a cold side heat exchanger allowing the second heat transfer fluid to absorb heat, and an intermediate heat exchanger allowing the first heat transfer fluid flowing between cold sides of the first magnetic regenerators and the second heat transfer fluid passing through hot sides of the second magnetic regenerators to exchange heat with each other.

A magnetic cooling apparatus having an improved structure in which effective heat exchange may be performed by a heat transfer fluid is provided. The magnetic cooling apparatus includes a magnetic regenerator allowing a heat transfer fluid to pass therethrough and a magnetocaloric material, a magnet to apply a magnetic field to the magnetic regenerator, and a high temperature heat exchanger allowing heat to be dissipated by the heat transfer fluid containing heat received from the magnetic regenerator. The magnetic cooling apparatus includes a low temperature heat exchanger allowing heat to be absorbed by the heat transfer fluid, a pipe to connect the magnetic regenerator, high temperature heat exchanger and low temperature heat exchanger such that the heat transfer fluid circulates through the magnetic regenerator, high temperature heat exchanger and low temperature heat exchanger, and a fluid transport unit to circulate or reciprocate the heat transfer fluid.

A magnetic cooling apparatus and a control method thereof are provided. The magnetic cooling apparatus provides a replacement having a simplified structure for motors providing driving force and power transmission systems of reciprocation type and rotation type cooling apparatuses. The magnetic cooling apparatus includes magnets forming a magnetic field, magnetic regeneration units formed of a magnetocaloric material that are provided with coils, and using electromagnetic force, generated when currents are supplied to the coils in the magnetic field, as kinetic energy, and a controller controlling the currents supplied to the coils of the magnetic regeneration units to control moving speeds and directions of the magnetic regeneration units.

Magnetic cooling apparatus and control method thereof

An ink-jet image forming apparatus. The ink-jet image forming apparatus includes a print head having a plurality of nozzles to eject ink, an ink tank to store the ink, an ink supply passage to supply the ink in the ink tank to the print head, an ink return passage to return the ink in the print head to the ink tank, a regulator mounted in the ink supply passage to regulate ink flow supplied to the print head, a shut-off valve mounted in the ink supply passage, between the ink tank and the regulator, to intercept ink flow supplied to the regulator, and an ink pump mounted in the ink return passage to forcedly flow the ink in the ink return passage. The ink pump is configured to be driven in forward and reverse directions so as to change an ink flow direction. Since the shut-off valve intercepts forcedly the ink flow in the ink supply passage, the ink in the ink tank is prevented from flowing abnormally to the print head and leaking from the print head.

Growing community of inventors

Suwon-si, South Korea

Il Ju Mun