Temperature control device, in particular vehicle temperature control device
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Solution Overview
Problem
Conventional magnetocaloric heat pumps using the magnetocaloric effect can only achieve small temperature differences, necessitating multi-stage processes to achieve significant temperature changes, which complicates the design and efficiency of temperature control devices.
Innovation Solution
A temperature control device utilizing the magnetocaloric effect with a compact and simple structure, where heat transfer medium flow zones are dynamically adjusted to align with the magnetic field rotation, allowing for alternating phases of heat transfer and circulation to achieve multi-stage temperature changes, enhancing efficiency and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If multi-stage processes are used to achieve greater temperature changes, then temperature control capability is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by making the heat transfer medium circulation sectors movable relative to the magnetic field arrangement. The sectors can be adjusted in position to dynamically align with the magnetic field zones during different phases of operation, enabling a single device structure to achieve multi-stage temperature control through dynamic reconfiguration rather than fixed multi-stage architecture
Solution Approach 2:
The patent segments the heat transfer medium circulation path into multiple flow zones that can be independently controlled and positioned. By dividing the circulation system into separable sectors that can be selectively activated and positioned relative to the magnetic field, the device achieves multi-stage temperature control capability while maintaining a compact single-unit structure
2Device complexity
If heat transfer medium circulation sectors are fixed in position, then device structure is simplified, but temperature control efficiency decreases
Solution Approach 1:
The heat transfer medium circulation sectors are designed to be dynamically adjustable in position relative to the magnetic field arrangement. This dynamic capability allows the sectors to be optimally positioned during different operating phases to maximize thermal interaction efficiency, while the overall adjustment mechanism maintains relatively simple structural implementation
3Temperature
If the magnetic field arrangement rotates, then temperature distribution is improved, but alignment with heat transfer zones becomes complex
Solution Approach 1:
The patent applies dynamics by making the heat transfer medium circulation sectors movable relative to the rotating magnetic field arrangement. The sectors can be adjusted in position to dynamically align with the magnetic field zones during different phases of operation, enabling a single device structure to achieve multi-stage temperature control through dynamic reconfiguration rather than fixed multi-stage architecture
Solution Approach 2:
The system employs periodic action through alternating operating phases where the magnetic field arrangement rotates to different positions and the heat transfer sectors are correspondingly adjusted. This periodic cycling between different alignment configurations enables continuous temperature control while managing the complexity of rotation-sector alignment through rhythmic, predictable operation patterns
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves greater temperature changes with increased efficiency by synchronizing the heat transfer medium circulation sectors with the magnetic field rotation, enabling efficient cooling and heating operations, particularly advantageous for vehicle air conditioning systems.
Implementation Method 1
When moving into the magnetic field, a spin alignment of the electrons of the magnetocaloric material takes place under the influence of the magnetic field. This spin alignment or alignment of the magnetic moments in the magnetic field has the consequence that the magnetic entropy decreases. Since the total entropy of the system cannot decrease, a thermal entropy manifested in a rise in temperature increases.
Implementation Method 2
If the magnetocaloric material is moved out of the magnetic field, the reverse process takes place. The temperature of a magnetocaloric material that is moved out of a magnetic field decreases.
Implementation Method 3
heat transfer medium flow zones that follow one another in the circumferential direction are assigned to one another in pairs... heat is transferred from the heat input fluid to the heat dissipation fluid
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A temperature control unit, in particular a vehicle temperature control unit, comprises at least one temperature control body (12) through which and/or around which a heat transfer medium can flow and which is made of magnetocaloric material and is preferably ring-like, a magnetic field arrangement (24) which can be rotated about an axis of rotation (A), the magnetic field arrangement (24) being Provides magnetic field heating areas (36) arranged one after the other around the axis of rotation and cooling areas (38) between magnetic field heating areas (36), with the temperature control body (12) providing a plurality of heat transfer medium flow zones (40) which follow one another in the circumferential direction, wherein at least two heat transfer medium flow zones (40) adjacent to one another in the circumferential direction are assigned to a heat transfer medium circulation sector (S), with heat input fluid for introducing heat into this heat transfer medium flow zone (50) flowing through at least one heat transfer medium flow zone (50). r and/or can be flown around, and/or wherein at least one heat transfer medium flow zone (52) can be flowed through and/or around by heat dissipation fluid for dissipating heat from this heat transfer medium flow zone (52).