Magnetic refrigeration control system, and method thereof

Abstract

A magnetic refrigeration control system, includes: a first magnetocaloric bed; a pipe, arranged through the first magnetocaloric bed; a coolant, flowing in the pipe; a pump, driving the coolant with a pumping speed; a valve, adjusting a flow period of the flowing coolant; a magnetic module, providing an increasing magnetic field to the first magnetocaloric bed during a magnetization period and providing a decreasing magnetic field to the first magnetocaloric bed during a demagnetization period; and a sensor, detecting a fluid pressure of the coolant flowing in the pipe, the temperature of a refrigerator, and a flowing rate of the coolant flowing in the pipe; and a controller, adjusting the pumping speed, the flow period, the magnetization period, and the demagnetization period according to the temperature, the fluid pressure, and the flowing rate in real time. A magnetic refrigeration control method is also disclosed.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The disclosure relates generally to magnetic refrigeration technologies, and more particularly relates to the control of a magnetic refrigeration system with better cooling performance.[0003]2. Description of the Related Art[0004]Present refrigeration technology, for example, a refrigerator, a freezer, a room air conditioner, a heat pump and the likes, mainly employs a gas compression / expansion cycle. However, a serious problem of environmental pollution is caused by specific Freon gases discharged into environment for refrigeration technology based on the gas compression / expansion cycle. Recently, magnetic refrigeration technology has been introduced as a highly efficient and environmentally friendly cooling technology. Magnetic refrigeration technology adapts a magnetocaloric effect (MCE) of magnetocaloric materials (MCM) to realize refrigeration cycles.[0005]Nowadays, the operation frequency of the MCM based magnetic...

AI Technical Summary

Benefits of technology

[0006]An embodiment of a magnetic refrigeration control system for an outer heat exchanger, includes: a first magnetocaloric bed; a pipe, arranged through the first magnetocaloric bed; a coolant, flowing in the pipe; a pump, driving the coolant with a pumping speed; a valve, adjusting a flow period of the coolant flowing in the pipe; a magnetic module, providing an increasing magnetic field to the first magnetocaloric bed during a magnetization period, and providing a decreasing magnetic field to the first magnetocaloric bed during a demagnetization period; a sensor, detecting a fluid pressure of the coolant flowing in the pipe, the temperature of the outer heat exchanger, and a flowing rate of the coolant flowing in the pipe; and a controller, adjusting the pumping speed, the flow period, the magnetization period, and the demagnetization period according to the temperature, the fluid pressure, and the flowing rate.

[0007]An embodiment of a magnetic refrigeration control method for cooling an heat exchanger, includes steps of: providing a magnetic refrigeration control system comprising a first magnetocaloric bed; a pipe arranged through the first magnetocaloric bed, and a coolant flowing in the pipe; driving the coolant with a pumping speed; adjusting a flow period of the coolant flowing in the pipe; providing an increasing magnetic field to the first magnetocaloric bed during a magnetization period, and providing a decreasing magnetic field to the first magnetocaloric bed during a demagnetization period; and detecting a fluid pressure of the coolant flowing in the pipe, the temperature of the outer heat exchanger, and a flowing rate of the coolant flowing in the pipe; adjusting the pumping speed, the flow period, the magnetization period, and the demagnetization period according to the temperature, the fluid pressure, and the flowing rate, wherein the temperature of the outer heat exchanger is determined by pumping speed, the flow period, the magnetization period and the demagnetization period.

Problems solved by technology

However, a serious problem of environmental pollution is caused by specific Freon gases discharged into environment for refrigeration technology based on the gas compression / expansion cycle.

Thus, for this kind of the magnetic refrigeration system is hard to achieve the best efficiency for various cooling situations or requirements.

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