Magnetic refrigeration equipment and heat exchange liquid flow control method and control device thereof
A heat exchange fluid and control device technology, applied in refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems of failure to find heat exchange fluid, low adjustment accuracy, and low adjustment efficiency, so as to improve flow control efficiency , Guaranteed cooling capacity and high degree of automation
Active Publication Date: 2015-07-29
HAIER GRP CORP +2
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Problems solved by technology
However, this is not only time-consuming and labor-intensive, but also has low adjustment accuracy and low adjustment efficiency.
Before the technical solution of the present invention was proposed, the applicant had not been able to find a method for effectively regulating the flow of heat exchange fluid
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[0027] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] First, briefly explain the technical idea of the present invention: For a magnetic refrigeration device with a controllable magnetic field system, the magnetic working medium in the magnetic field system will generate different cooling and heat due to different magnetic field strengths. Under different cooling capacity or heating capacity, if the flow rate of the heat exchange fluid remains unchanged, it will easily cause the problem of reduced cooling capacity or decreased cooling efficiency. Therefore, for magnetic refrigeration equipment with a controllable magnetic field system, how to dynamically adjust the heat exchange fluid flow rate under different magnetic field strengths to ensure the best heat exchange fluid flow rate under different working conditions is the technical problem to be solve...
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The invention discloses magnetic refrigeration equipment and a heat exchange liquid flow control method and control device thereof. The magnetic refrigeration equipment comprises a controllable magnetic field system and a heat exchange liquid drive pump, wherein the magnetic field intensity T of the controllable magnetic field system is T=A*cos(wt+theta); the method comprises the following steps: acquiring angular velocity w and initial phase theta of the magnetic field intensity in the controllable magnetic field system; calculating heat exchange liquid flow V according to a formula V=B*cos[w(t-T0)+theta]; calculating rotation speed n of the heat exchange liquid drive pump according to the heat exchange liquid flow and controlling the drive pump to rotate according to rotation speed n so as to realize automatic, quick and accurate control of the heat exchange liquid flow in the magnetic refrigeration equipment.
Description
technical field [0001] The invention belongs to the technical field of magnetic refrigeration, and in particular relates to a magnetic refrigeration equipment, a flow control method and a control device for a heat exchange liquid thereof. Background technique [0002] Most of the existing refrigeration equipment is vapor compression refrigeration equipment, which mainly achieves the purpose of refrigeration by evaporating and absorbing heat of the refrigerant. However, with the change of people's concept of environment, health and silence, non-polluting and low-noise refrigerators have increasingly become the main focus of consumers when choosing refrigeration products, so magnetic refrigeration equipment has a bright future. [0003] Magnetic refrigeration equipment is a refrigeration equipment that uses the magnetocaloric effect for refrigeration. The magnetocaloric effect is a property of the magnetic material to absorb and release heat due to the change of internal mag...
Claims
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IPC IPC(8): F25B49/00F25B21/00
CPCF25B21/00F25B49/00F25B2321/002Y02B30/00
Inventor 唐林强刘杰张立臣王晶晶姜合民徐培培
Owner HAIER GRP CORP