WO2021083129A1 - Magnetic refrigeration heat exchanger and refrigeration heating system and method - Google Patents

Magnetic refrigeration heat exchanger and refrigeration heating system and method Download PDF

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WO2021083129A1
WO2021083129A1 PCT/CN2020/123927 CN2020123927W WO2021083129A1 WO 2021083129 A1 WO2021083129 A1 WO 2021083129A1 CN 2020123927 W CN2020123927 W CN 2020123927W WO 2021083129 A1 WO2021083129 A1 WO 2021083129A1
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heat exchanger
rectangular
heat
storage container
electric
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PCT/CN2020/123927
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French (fr)
Chinese (zh)
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蔺新星
尹立坤
汤鹏
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中国长江三峡集团有限公司
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Priority to CN201911045511.4A priority Critical patent/CN110657603A/en
Priority to CN201911045511.4 priority
Application filed by 中国长江三峡集团有限公司 filed Critical 中国长江三峡集团有限公司
Publication of WO2021083129A1 publication Critical patent/WO2021083129A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00Machines, plants or systems, using electric or magnetic effects
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/002Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

A magnetic refrigeration heat exchanger and a refrigeration heating system and method, comprising a rectangular heat exchanger (1). The rectangular heat exchanger (1) comprises a heat exchanger housing (2); a capillary matrix (4) filled with a magnetic working medium is mounted in the heat exchanger housing (2); cover plates (3) are mounted at the two ends of the heat exchanger housing (2) and encapsulates the capillary matrix (4) inside the heat exchanger housing; a first through hole (5) for air inlet and air outlet is formed in each of the cover plates (3) on the two sides or the upper edges of the heat exchanger housing (2) according to different processes in the heat exchanger; a second through hole (6(a)) and a third through hole (6b)) for circulating heat carrying and cooling fluid are formed in the cover plates (3) on the two sides or the lower edges of the heat exchanger housing (2). The magnetic refrigeration heat exchanger aims at improving the reliability and universality of the heat exchanger and improving the heat exchange efficiency.

Description

一种磁制冷换热器和制冷制热系统及方法Magnetic refrigeration heat exchanger and refrigeration and heating system and method 技术领域Technical field
本发明涉及用于磁制冷装置领域,特别涉及一种集封装与强化传热一体的磁制冷换热器和制冷制热系统及方法。The invention relates to the field of magnetic refrigeration devices, in particular to a magnetic refrigeration heat exchanger, a refrigeration and heating system and a method integrating packaging and enhanced heat transfer.
背景技术Background technique
制冷技术伴随人类生产生活的方方面面,传统气体压缩式制冷技术是目前最为成熟、应用最为广泛的制冷技术。近年来,世界各国对控制温室气体排放和臭氧层破坏等问题逐渐达成共识。根据蒙特利尔协定,各签约方需逐渐替代和淘汰含氟工质。但现阶段新型工质的环保、安全问题与循环效率依然难以兼顾。磁制冷作为一种新型的制冷技术,是利用某些材料磁热效应明显的特征(在外部磁场的作用下升温放热反之降温吸热),进行制冷的过程。在绝热条件下,磁工质出现高温时利用载热流体将热量进行储运,磁工质出现低温时利用载冷流体将冷量进行储运,如此往复循环,冷量和热量会分别在冷端和热端进行积累,当负荷与制冷量相匹配时就形成了一个相对稳定的制冷过程。Refrigeration technology accompanies all aspects of human production and life. Traditional gas compression refrigeration technology is currently the most mature and widely used refrigeration technology. In recent years, countries around the world have gradually reached consensus on issues such as controlling greenhouse gas emissions and ozone layer destruction. According to the Montreal Agreement, all signatories need to gradually replace and phase out fluorine-containing working fluids. However, at this stage, it is still difficult to balance the environmental protection, safety issues and cycle efficiency of new working fluids. As a new type of refrigeration technology, magnetic refrigeration is a process of refrigeration by using the obvious characteristics of the magnetocaloric effect of certain materials (heating and releasing heat under the action of an external magnetic field, while cooling and absorbing heat). Under adiabatic conditions, when the magnetic working medium has a high temperature, the heat-carrying fluid is used to store and transport heat, and when the magnetic working medium has a low temperature, the cold-carrying fluid is used to store and transport the cold. The end and the hot end are accumulated, and when the load matches the cooling capacity, a relatively stable refrigeration process is formed.
为实现连续、稳定的磁制冷过程,需要施加于磁工质上的励磁磁场发生周期性变化,根据励磁磁场的本身特点,磁制冷循环的建立也随之变化,但磁制冷换热器(磁工质载体)是其中的共性问题。励磁方式可分为超导磁体励磁、电励磁和永磁体励磁,这几种励磁方式各有优劣,就目前来看永磁励磁方式综合性能较优。以永磁励磁制冷为例,根据励磁体与磁工质的相对运动方式分为旋转式和往复式两种主要形式,因而由于相对运动形式和外形的不同,磁工质的装填和流道设计需进行相应的调整,采用简单的薄片或颗粒堆砌的方式普适性不足,容易出现系统阻力过大等问题。In order to achieve a continuous and stable magnetic refrigeration process, the excitation magnetic field applied to the magnetic working medium needs to change periodically. According to the characteristics of the excitation magnetic field, the establishment of the magnetic refrigeration cycle also changes, but the magnetic refrigeration heat exchanger (magnetic The working fluid carrier) is the common problem among them. Excitation methods can be divided into superconducting magnet excitation, electric excitation and permanent magnet excitation. These excitation methods have their own advantages and disadvantages. At present, the overall performance of permanent magnet excitation methods is better. Take permanent magnet excitation refrigeration as an example. According to the relative movement of the excitation magnet and the magnetic working medium, it can be divided into two main forms: rotary and reciprocating. Therefore, due to the difference in the relative movement form and shape, the filling and flow channel design of the magnetic working medium Corresponding adjustments need to be made. Simple sheet or particle stacking methods are not universally applicable, and problems such as excessive system resistance are prone to occur.
从前磁制冷技术主要应用于液氢的制备等深冷领域,这是由于常规磁工质一般在较低的温度区间才能保证较高的磁熵变(顺磁体在20K以下磁热效应较强,而铁磁体也需要在接近居里点时有较强的磁熵变,且居里点较低)。随着发现了镧系稀土金属钆在室温附近有较大磁热效应,以及随后发现的钆硅锗合金的巨磁热效应,室温磁制冷技术有了发展的基础。在美国专利US5743095中披露的Gd-Si-Ge合金,可同时应用于低温磁制冷和室温磁制冷过程。目前,为保证换热效果,一般采用磁热材料(薄片、或粉末)与载冷(热)流体直接接触方式,不管是预制成型还是安装网状格栅都难免造成磁工质的腐蚀或流失,因此解决强化换热与磁工质封装之间的矛盾是本发明要重点解决的技术问题。In the past, magnetic refrigeration technology was mainly used in cryogenic fields such as the preparation of liquid hydrogen. This is because conventional magnetic working fluids generally ensure higher magnetic entropy changes in a lower temperature range (paramagnets have stronger magnetocaloric effects below 20K, and Ferromagnets also need to have a strong magnetic entropy change when they are close to the Curie point, and the Curie point is low). With the discovery of the large magnetocaloric effect of the lanthanide rare earth metal gadolinium near room temperature, and the subsequent discovery of the giant magnetocaloric effect of the gadolinium-silicon-germanium alloy, room temperature magnetic refrigeration technology has a foundation for development. The Gd-Si-Ge alloy disclosed in US Pat. No. 5,743,095 can be used in both low-temperature magnetic refrigeration and room temperature magnetic refrigeration processes. At present, in order to ensure the heat exchange effect, the direct contact between the magnetocaloric material (sheet or powder) and the cold (hot) fluid is generally used. Whether it is prefabricated or installed with a mesh grid, it is inevitable that the magnetic working fluid will be corroded or lost. Therefore, solving the contradiction between enhanced heat exchange and magnetic working medium packaging is a technical problem to be solved by the present invention.
授权号为CN1242228C和申请号为CN201780002992的两个专利分别介绍了板式和管 式的磁工质封装工艺,并涉及相关换热设备。前者是在0.02mm的紫铜薄膜之间填充磁热材料粉末若不进行锻压处理使工质本身产生足够的强度,薄膜本身难以有足够的强度作为颗粒支撑颗粒物的骨架。后者将钆或合金棒作为内芯包裹铜管,并轧制成为2.6mm的线材。但是钆尤其复合材料的延展性难与铜相匹配,轧制过程中可能出现空心、磁工质芯体外漏列管强度不足等情况,且该专利涉及的换热器未做详细描述,列管布局,流道,排气等问题均不涉及。The two patents with authorization number CN1242228C and application number CN201780002992 respectively introduced plate and tube magnetic working medium packaging processes, and related to related heat exchange equipment. The former is to fill the magnetocaloric material powder between the 0.02mm red copper film. If the working fluid itself is not forged and pressed, the working fluid itself will have sufficient strength, and the film itself will not have enough strength as the framework of the particles to support the particles. The latter uses gadolinium or alloy rod as the inner core to wrap a copper tube and roll it into a 2.6mm wire. However, the ductility of gadolinium, especially composite materials, is difficult to match with that of copper. During the rolling process, hollow cores and insufficient strength of the external leakage tubes of the magnetic working fluid core may occur, and the heat exchanger involved in the patent is not described in detail. Layout, runners, exhaust and other issues are not involved.
现阶段磁制冷换热器磁芯主要为板式、列管式和颗粒几种,一般整体的孔隙度在0.4~0.6这一区间,不论哪种形式都会形成微通道换热情况,尤其是颗粒式在充填过程中最容易出现毛细作用使换热器阻力变大。且换热器换热管道内会出现存液问题,这样造成了磁芯热量或者冷量的损失,随着磁制冷技术逐渐成熟,系统规模的逐渐扩大,磁制冷换热器内的热容量将大到不可忽视的程度。因而换热器的合理设计及运行将直接关系到磁制冷效率。发明内容At this stage, the magnetic cores of magnetic refrigeration heat exchangers are mainly plate type, tube type and particle type. Generally, the overall porosity is in the range of 0.4 to 0.6. No matter which type, micro-channel heat transfer will be formed, especially the particle type. In the filling process, capillary action is most likely to increase the resistance of the heat exchanger. In addition, there will be liquid storage problems in the heat exchange pipes of the heat exchanger, which causes the loss of heat or cold capacity of the magnetic core. With the gradual maturity of magnetic refrigeration technology and the gradual expansion of the system scale, the heat capacity in the magnetic refrigeration heat exchanger will be large. To the extent that it cannot be ignored. Therefore, the reasonable design and operation of the heat exchanger will directly affect the efficiency of the magnetic refrigeration. Summary of the invention
为解决磁制冷系统中较为普遍的强化换热与磁工质封装之间的矛盾,以提高换热器可靠性、通用性和强化换热效率为目的,本发明提供了一种新型带有磁制冷工质封装的通用换热器。In order to resolve the common contradiction between enhanced heat exchange and magnetic working medium packaging in magnetic refrigeration systems, and for the purpose of improving the reliability, versatility and enhanced heat exchange efficiency of heat exchangers, the present invention provides a new type of magnetic A general-purpose heat exchanger encapsulated by a refrigerating medium.
为了实现上述的技术特征,本发明的目的是这样实现的:一种磁制冷换热器,它包括矩形换热器,所述矩形换热器包括换热器壳体,所述换热器壳体的内部安装有装填了磁工质的毛细管矩阵,在换热器壳体的两端安装有盖板并将毛细管矩阵封装在其内部;两侧盖板或上换热器壳体的上沿根据换热器内不同流程加工有用于进气和排气的第一通孔;两侧盖板或上换热器壳体的下沿加工有用于流通载热、载冷流体的第二通孔和第三通孔。In order to achieve the above technical features, the object of the present invention is achieved as follows: a magnetic refrigeration heat exchanger, which includes a rectangular heat exchanger, the rectangular heat exchanger includes a heat exchanger shell, the heat exchanger shell A capillary matrix filled with a magnetic working fluid is installed inside the body, and cover plates are installed at both ends of the heat exchanger shell and the capillary matrix is encapsulated inside; cover plates on both sides or the upper edge of the upper heat exchanger shell According to different processes in the heat exchanger, a first through hole is processed for air intake and exhaust; a second through hole for circulating heat and cold fluid is processed on both sides of the cover plate or the lower edge of the upper heat exchanger shell And the third through hole.
所述换热器壳体采用矩形盒结构;所述换热器壳体和盖板都采用铝合金材料裁剪焊接拼装而成。The heat exchanger shell adopts a rectangular box structure; the heat exchanger shell and the cover plate are made of aluminum alloy materials by cutting and welding.
所述换热器壳体与盖板连接的位置焊接固定有凸台,所述凸台上安装有用于对换热器壳体进行密封的硅胶密封胶条。A boss is welded and fixed at the position where the heat exchanger shell and the cover plate are connected, and a silicone rubber sealing strip for sealing the heat exchanger shell is installed on the boss.
所述毛细管矩阵包括第一矩形挡板和第二矩形挡板,所述第一矩形挡板和第二矩形挡板之间均布安装有呈矩形布置的多根毛细管,所述毛细管之间呈等间距上下交错布置有方形格栅组,并形成一个迂回的流道。The capillary matrix includes a first rectangular baffle plate and a second rectangular baffle plate. A plurality of capillaries arranged in a rectangular shape are uniformly installed between the first rectangular baffle plate and the second rectangular baffle plate. Square grid groups are staggered up and down at equal intervals and form a circuitous flow channel.
所述方形格栅组包括第一方形格栅、第二方形格栅和第三方形格栅;所述方形格栅组、第一矩形挡板、第二方形格栅和第三方形格栅都采用铝合金板冲压一体化成型。The square grid group includes a first square grid, a second square grid, and a third-shaped grid; the square grid group, a first rectangular baffle, a second square grid, and a third-shaped grid All of them are formed by stamping and integral forming of aluminum alloy plate.
所述毛细管包括毛细管本体,所述毛细管本体的两个端头分别安装有用于对其进行 封闭的第一圆柱形硅胶帽和第二圆柱形硅胶帽,在毛细管本体的内部填充磁工质。The capillary tube includes a capillary body, two ends of the capillary body are respectively installed with a first cylindrical silica gel cap and a second cylindrical silica gel cap for sealing the capillary body, and a magnetic working fluid is filled in the capillary body.
所述磁工质为Gd-Si-Ge合金或其它巨热材料的10纳米级粉末与体积分数5%的10纳米级纳米碳粉末混合而成;制备过程中首先用第一圆柱形硅胶帽将毛细管本体的一端进行封口,并将磁工质填入毛细管内,之后通过反复离心压实的方式将毛细管本体填实,最后用第二圆柱形硅胶帽将毛细管另一端封堵。The magnetic working medium is a mixture of 10 nanometer-sized powder of Gd-Si-Ge alloy or other giant thermal materials and 5% volume fraction of 10 nanometer-sized carbon powder; the first cylindrical silica gel cap is used in the preparation process Seal one end of the capillary body, and fill the capillary with a magnetic working fluid, then fill the capillary body by repeated centrifugal compaction, and finally block the other end of the capillary with a second cylindrical silica gel cap.
所述毛细管本体采用铜、铝或合金材料制备而成,所述第一圆柱形硅胶帽和第二圆柱形硅胶帽采用导热硅胶材料制成。The capillary body is made of copper, aluminum or alloy materials, and the first cylindrical silicone cap and the second cylindrical silicone cap are made of thermally conductive silicone material.
所述磁制冷换热器构建的制冷制热系统,包括矩形换热器和数据采集和控制系统;所述矩形换热器与设置在其外围的可移动磁场相配合,所述矩形换热器的第二通孔和第三通孔之间分别并连有蓄热容器和蓄冷容器,所述蓄热容器的出口与储热侧水泵的入口相连,储热侧水泵的出口与第一电动三通阀一个进口相连;所述第一电动三通阀的另一个进口与储冷侧水泵出口相连,储冷侧水泵入口与蓄冷容器出口相连;第二电动三通阀的两出口分别与蓄热容器和蓄冷容器的入口相连;第一电动三通阀入口和第二电动三通阀出口分别对应连接矩形换热器的第二通孔和第三通孔;矩形换热器的进气口通过第三电动三通阀连接有压缩空气储气罐和排气阀;The refrigeration and heating system constructed by the magnetic refrigeration heat exchanger includes a rectangular heat exchanger and a data acquisition and control system; the rectangular heat exchanger is matched with a movable magnetic field arranged on its periphery, and the rectangular heat exchanger A heat storage container and a cold storage container are connected in parallel between the second through hole and the third through hole. The outlet of the heat storage container is connected to the inlet of the heat storage side water pump, and the outlet of the heat storage side water pump is connected to the first electric three One inlet of the first electric three-way valve is connected; the other inlet of the first electric three-way valve is connected to the outlet of the cold storage side water pump, and the inlet of the cold storage side water pump is connected to the outlet of the cold storage container; the two outlets of the second electric three-way valve are respectively connected to the heat storage The container is connected to the inlet of the cold storage container; the inlet of the first electric three-way valve and the outlet of the second electric three-way valve are respectively connected to the second through hole and the third through hole of the rectangular heat exchanger; the air inlet of the rectangular heat exchanger passes through The third electric three-way valve is connected with a compressed air storage tank and an exhaust valve;
所述蓄热容器内部安装有蓄热容器电子水位计;An electronic water level gauge of the thermal storage container is installed inside the thermal storage container;
所述蓄冷容器内部安装有蓄冷容器电子水位计。An electronic water level gauge of the cold storage container is installed inside the cold storage container.
所述制冷系统的制热和制冷方法:The heating and cooling method of the refrigeration system:
制热储热过程:Heating and storage process:
Step1.1:通过数据采集和控制系统分别控制第一电动三通阀、第二电动三通阀和第三电动三通阀使矩形换热器、蓄热容器、储热侧水泵相连形成储热循环;Step1.1: Control the first electric three-way valve, the second electric three-way valve and the third electric three-way valve respectively through the data acquisition and control system to connect the rectangular heat exchanger, heat storage container, and heat storage side water pump to form heat storage cycle;
Step1.2:排气阀与矩形换热器的气口相连,利用蓄热容器高置将液体灌满矩形换热器;Step1.2: The exhaust valve is connected to the air port of the rectangular heat exchanger, and the heat storage container is used to fill the rectangular heat exchanger with liquid;
Step1.3:可移动磁场开始为矩形换热器励磁,矩形换热器放热,储热侧水泵开启,蓄热容器开始收集热量,并通过负载换热器将热量排出;Step1.3: The movable magnetic field starts to excite the rectangular heat exchanger, the rectangular heat exchanger releases heat, the water pump on the heat storage side is turned on, and the heat storage container starts to collect heat and discharge the heat through the load heat exchanger;
Step1.4:当矩形换热器不再释放热量时,储热侧水泵关闭,第三电动三通阀控制排气阀关闭,压缩空气储气罐开启;Step1.4: When the rectangular heat exchanger no longer releases heat, the heat storage side water pump is closed, the third electric three-way valve controls the exhaust valve to close, and the compressed air storage tank opens;
Step1.5:第一电动三通阀关闭,压缩空气将矩形换热器内液体压入蓄热容器,通过计算得到矩形换热器内的储水量,当蓄热容器内蓄热容器电子水位计所测量水位升高到相应容积时,第二电动三通阀关闭,制热过程结束;Step1.5: The first electric three-way valve is closed, the compressed air presses the liquid in the rectangular heat exchanger into the heat storage container, and the water storage capacity in the rectangular heat exchanger is obtained by calculation. When the electronic water level gauge of the heat storage container in the heat storage container When the measured water level rises to the corresponding volume, the second electric three-way valve is closed, and the heating process ends;
制冷储冷过程:Refrigeration and cold storage process:
Step2.1:通过数据采集和控制系统分别控制第一电动三通阀、第二电动三通阀和第三电动三通阀使矩形换热器、蓄冷容器、储冷侧水泵相连形成储冷循环;Step2.1: Control the first electric three-way valve, the second electric three-way valve and the third electric three-way valve respectively through the data acquisition and control system to connect the rectangular heat exchanger, cold storage container, and cold storage side water pump to form a cold storage cycle ;
Step2.2:排气阀与矩形换热器的气口相连,利用蓄冷容器高置将液体灌满矩形换热器;Step2.2: The exhaust valve is connected to the air port of the rectangular heat exchanger, and the cold storage container is used to fill the rectangular heat exchanger with liquid;
Step2.3:可移动磁场离开矩形换热器,矩形换热器吸热,储冷侧水泵开启,蓄冷容器开始收集冷量,并通过负载换热器将冷量排出;Step2.3: The movable magnetic field leaves the rectangular heat exchanger, the rectangular heat exchanger absorbs heat, the water pump on the cold storage side is turned on, and the cold storage container starts to collect cold energy and discharge the cold energy through the load heat exchanger;
Step2.4:当矩形换热器不再释放冷量时,储冷侧水泵关闭,第三电动三通阀控制排气阀关闭,压缩空气储气罐开启;Step2.4: When the rectangular heat exchanger no longer releases cold capacity, the cold storage side water pump is closed, the third electric three-way valve controls the exhaust valve to close, and the compressed air storage tank opens;
Step2.5:第一电动三通阀关闭,压缩空气将换热器内液体压入蓄冷容器,通过计算得到矩形换热器内的储水量,当蓄冷容器内蓄冷容器电子水位计所测量水位升高到相应容积时,第二电动三通阀关闭,制冷过程结束;Step2.5: The first electric three-way valve is closed, the compressed air presses the liquid in the heat exchanger into the cold storage container, and the water storage in the rectangular heat exchanger is calculated. When the water level measured by the electronic water level gauge of the cold storage container in the cold storage container rises When it reaches the corresponding volume, the second electric three-way valve is closed, and the refrigeration process ends;
通过上述的制热储热过程和制冷储冷过程的交替形成相应的制热制冷工作循环。Through the alternation of the heating and storage process and the refrigeration and storage process, a corresponding heating and refrigeration working cycle is formed.
本发明有如下有益效果:The present invention has the following beneficial effects:
1、通过采用上述结构的磁制冷换热器其采用磁制冷循环的方式实现循环的制冷或者制热,其利用磁工质磁热效应特征即在外部磁场的作用下升温放热反之降温吸热,进行制冷的过程。在绝热条件下,磁工质出现高温时利用载热流体将热量进行储运,磁工质出现低温时利用载冷流体将冷量进行储运,如此往复循环,冷量和热量会分别在冷端和热端进行积累,当负荷与制冷量相匹配时就形成了一个相对稳定的制冷过程。同时其有效的解决磁制冷系统中较为普遍的强化换热与磁工质封装之间的矛盾,提高了换热器可靠性及通用性,提高了换热效率。1. The magnetic refrigeration heat exchanger adopts the above-mentioned structure to realize cyclic refrigeration or heating by means of a magnetic refrigeration cycle. It uses the magnetocaloric effect of the magnetic working medium, that is, it heats up and releases heat under the action of an external magnetic field, but it cools and absorbs heat. The process of refrigeration. Under adiabatic conditions, when the magnetic working medium has a high temperature, the heat-carrying fluid is used to store and transport heat, and when the magnetic working medium has a low temperature, the cold-carrying fluid is used to store and transport the cold. The end and the hot end are accumulated, and when the load matches the cooling capacity, a relatively stable refrigeration process is formed. At the same time, it effectively solves the common contradiction between enhanced heat exchange and magnetic working medium packaging in the magnetic refrigeration system, improves the reliability and versatility of the heat exchanger, and improves the heat exchange efficiency.
2、将磁工质封装于毛细管内,换热器内流道可根据需要进行流程变换,解决了磁工质直接接触的损失,和系统阻力过大的问题。2. The magnetic working medium is encapsulated in the capillary tube, and the flow channel in the heat exchanger can be changed according to the needs, which solves the problem of direct contact with the magnetic working medium and excessive system resistance.
3、本发明的换热器的使用是在载热流体、载冷流体循环之间增加了一个进气排液过程和一个进液排气过程;因而避免载冷液体在换热期内储存所造成的冷、热量的损失。3. The use of the heat exchanger of the present invention adds an intake and discharge process and a liquid intake and exhaust process between the circulation of the heat-carrying fluid and the cold-carrying fluid; thus, it is avoided that the cold-carrying liquid is stored during the heat exchange period. The resulting loss of cold and heat.
附图说明Description of the drawings
下面结合附图和实施例对本发明作进一步说明。The present invention will be further described below in conjunction with the drawings and embodiments.
图1为本发明矩形换热器的整体结构图。Figure 1 is the overall structure diagram of the rectangular heat exchanger of the present invention.
图2为本发明毛细管矩阵的整体结构图。Figure 2 is a diagram of the overall structure of the capillary matrix of the present invention.
图3为本发明矩形挡板平面图。Figure 3 is a plan view of the rectangular baffle of the present invention.
图4为本发明方形格栅平面图。Figure 4 is a plan view of the square grid of the present invention.
图5为本发明矩形挡板内凹槽的剖视图。Figure 5 is a cross-sectional view of the groove in the rectangular baffle of the present invention.
图6为本发明毛细管整体结构示意图。Fig. 6 is a schematic diagram of the overall structure of the capillary tube of the present invention.
图7为本发明毛细管爆炸结构图。Figure 7 is a diagram of the explosive structure of the capillary tube of the present invention.
图8为本发明图6中毛细管A-A剖视图。Fig. 8 is a cross-sectional view of the capillary tube A-A in Fig. 6 of the present invention.
图9为本发明图6中毛细管B-B剖视图。Fig. 9 is a cross-sectional view of the capillary tube B-B in Fig. 6 of the present invention.
图10为本发明制冷制热系统图;Figure 10 is a diagram of the refrigeration and heating system of the present invention;
图11为本实用新型换热器壳体上凸台和硅胶密封胶条安装图。Figure 11 is the installation diagram of the boss and the silicone rubber sealing strip on the heat exchanger shell of the utility model.
图中:矩形换热器1、换热器壳体2、凸台(2(a))、硅胶密封胶条(2(b))、盖板3、毛细管矩阵4、第一通孔5、第二通孔6(a)、第三通孔6(b)、毛细管7、第一矩形挡板8(a)、第二矩形挡板8(b)、第一方形格栅9(a)、第二方形格栅9(b)、第三方形格栅9(c)、第一圆柱形硅胶帽10(a)、第二圆柱形硅胶帽10(b)、毛细管本体11、磁工质12、可移动磁场13、蓄热容器14、蓄冷容器15、压缩空气储气罐16、数据采集和控制系统17、第三电动三通阀18(a)、第二电动三通阀18(b)、第一电动三通阀18(c)、排气阀19、蓄热容器电子水位计20(a)、蓄冷容器电子水位计20(b)、储热侧水泵21(a)、储冷侧水泵21(b)。In the picture: rectangular heat exchanger 1, heat exchanger shell 2, boss (2(a)), silicone sealing tape (2(b)), cover plate 3, capillary matrix 4, first through hole 5, The second through hole 6 (a), the third through hole 6 (b), the capillary 7, the first rectangular baffle 8 (a), the second rectangular baffle 8 (b), the first square grid 9 (a ), second square grid 9(b), third-party grid 9(c), first cylindrical silicone cap 10(a), second cylindrical silicone cap 10(b), capillary body 11, magnet Mass 12, movable magnetic field 13, heat storage container 14, cold storage container 15, compressed air storage tank 16, data acquisition and control system 17, third electric three-way valve 18 (a), second electric three-way valve 18 ( b), the first electric three-way valve 18 (c), the exhaust valve 19, the thermal storage container electronic water level gauge 20 (a), the cold storage container electronic water level gauge 20 (b), the heat storage side water pump 21 (a), the storage tank Cold side water pump 21(b).
具体实施方式Detailed ways
下面结合附图对本发明的实施方式做进一步的说明。The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
实施例1:Example 1:
请参阅图1-11,一种磁制冷换热器,它包括矩形换热器1,所述矩形换热器1包括换热器壳体2,所述换热器壳体2的内部安装有装填了磁工质12的毛细管矩阵4,在换热器壳体2的两端安装有盖板3并将毛细管矩阵4封装在其内部;两侧盖板3或上换热器壳体2的上沿根据换热器内不同流程加工有用于进气和排气的第一通孔5;两侧盖板3或上换热器壳体2的下沿加工有用于流通载热、载冷流体的第二通孔6(a)和第三通孔6(b)。通过采用上述结构的磁制冷换热器其采用磁制冷循环的方式实现循环的制冷或者制热,其利用磁工质12磁热效应特征即在外部磁场的作用下升温放热反之降温吸热,进行制冷的过程。在绝热条件下,磁工质出现高温时利用载热流体将热量进行储运,磁工质出现低温时利用载冷流体将冷量进行储运,如此往复循环,冷量和热量会分别在冷端和热端进行积累,当负荷与制冷量相匹配时就形成了一个相对稳定的制冷过程。同时其有效的解决磁制冷系统中较为普遍的强化换热与磁工质封装之间的矛盾,提高了换热器可靠性及通用性,提高了换热效率。1-11, a magnetic refrigeration heat exchanger, which includes a rectangular heat exchanger 1, the rectangular heat exchanger 1 includes a heat exchanger shell 2, the heat exchanger shell 2 is installed inside The capillary matrix 4 filled with the magnetic working medium 12 is installed with cover plates 3 at both ends of the heat exchanger housing 2 and the capillary matrix 4 is enclosed inside; the cover plates 3 on both sides or the upper heat exchanger housing 2 The upper edge is processed with first through holes 5 for air intake and exhaust according to different processes in the heat exchanger; the bottom edge of the cover plate 3 on both sides or the lower edge of the upper heat exchanger shell 2 is processed for circulating heat and cold fluid The second through hole 6(a) and the third through hole 6(b). By adopting the magnetic refrigeration heat exchanger of the above structure, it uses a magnetic refrigeration cycle to realize cyclic cooling or heating. It uses the magnetic working medium 12 magnetocaloric effect feature, that is, it heats up and releases heat under the action of an external magnetic field, and it cools and absorbs heat. The process of refrigeration. Under adiabatic conditions, when the magnetic working medium has a high temperature, the heat-carrying fluid is used to store and transport heat, and when the magnetic working medium has a low temperature, the cold-carrying fluid is used to store and transport the cold. The end and the hot end are accumulated, and when the load matches the cooling capacity, a relatively stable refrigeration process is formed. At the same time, it effectively solves the common contradiction between enhanced heat exchange and magnetic working medium packaging in the magnetic refrigeration system, improves the reliability and versatility of the heat exchanger, and improves the heat exchange efficiency.
进一步的,所述换热器壳体2采用矩形盒结构;所述换热器壳体2和盖板3都采用铝合金材料裁剪焊接拼装而成。所述换热器壳体2与盖板3连接的位置焊接固定有凸台2 (a),所述凸台2(a)上安装有用于对换热器壳体2进行密封的硅胶密封胶条2(b)。通过上述的结构形成很好的隔热,进而大大的提高了换热效率。Further, the heat exchanger shell 2 adopts a rectangular box structure; the heat exchanger shell 2 and the cover plate 3 are both cut and welded and assembled by aluminum alloy materials. A boss 2 (a) is welded and fixed at the position where the heat exchanger shell 2 and the cover plate 3 are connected, and a silicone sealant for sealing the heat exchanger shell 2 is installed on the boss 2 (a) Article 2(b). The above-mentioned structure forms good heat insulation, thereby greatly improving the heat exchange efficiency.
进一步的,所述毛细管矩阵4包括第一矩形挡板8(a)和第二矩形挡板8(b),所述第一矩形挡板8(a)和第二矩形挡板8(b)之间均布安装有呈矩形布置的多根毛细管7,所述毛细管7之间呈等间距上下交错布置有方形格栅组,并形成一个迂回的流道。所述方形格栅组包括第一方形格栅9(a)、第二方形格栅9(b)和第三方形格栅9(c);所述方形格栅组、第一矩形挡板8(a)、第二方形格栅9(b)和第三方形格栅9(c)都采用铝合金板冲压一体化成型。Further, the capillary matrix 4 includes a first rectangular baffle 8(a) and a second rectangular baffle 8(b), the first rectangular baffle 8(a) and the second rectangular baffle 8(b) A plurality of capillaries 7 arranged in a rectangular shape are uniformly installed in between, and square grid groups are staggered up and down at equal intervals between the capillaries 7 and form a circuitous flow channel. The square grid group includes a first square grid 9(a), a second square grid 9(b) and a third-shaped grid 9(c); the square grid group, a first rectangular baffle 8(a), the second square grid 9(b) and the third-party grid 9(c) are all stamped and integrated with aluminum alloy plates.
其中所述毛细管矩阵4的外形主要由矩形挡板和方形格栅来控制,长度依据换热器要求和毛细管管长来确定;格栅、挡板与换热器为液体形成封闭流道,三个挡板可为流体构成四个流程。The shape of the capillary matrix 4 is mainly controlled by a rectangular baffle and a square grid, and the length is determined according to the requirements of the heat exchanger and the length of the capillary tube; the grid, the baffle and the heat exchanger are liquids to form a closed flow channel. Each baffle can constitute four processes for the fluid.
进一步的,所述毛细管7包括毛细管本体11,所述毛细管本体11的两个端头分别安装有用于对其进行封闭的第一圆柱形硅胶帽10(a)和第二圆柱形硅胶帽10(b),在毛细管本体11的内部填充磁工质12。Further, the capillary tube 7 includes a capillary body 11, and two ends of the capillary body 11 are respectively installed with a first cylindrical silica gel cap 10(a) and a second cylindrical silica gel cap 10 ( b) Filling the inside of the capillary body 11 with a magnetic working fluid 12.
进一步的,所述磁工质12为Gd-Si-Ge合金或其它巨热材料的10纳米级粉末与体积分数5%的10纳米级纳米碳粉末混合而成;制备过程中首先用第一圆柱形硅胶帽10(a)将毛细管本体11的一端进行封口,并将磁工质12填入毛细管内,之后通过反复离心压实的方式将毛细管本体11填实,最后用第二圆柱形硅胶帽10(b)将毛细管另一端封堵。Further, the magnetic working medium 12 is a mixture of 10 nanometer-sized powder of Gd-Si-Ge alloy or other giant thermal materials and 10 nanometer-sized carbon powder with a volume fraction of 5%; the first step is used in the preparation process. The cylindrical silica gel cap 10(a) seals one end of the capillary body 11, and fills the magnetic working medium 12 into the capillary. After that, the capillary body 11 is filled by repeated centrifugal compaction, and finally a second cylindrical silica gel is used. The cap 10(b) blocks the other end of the capillary.
进一步的,所述毛细管本体11采用铜、铝或合金材料制备而成,所述第一圆柱形硅胶帽10(a)和第二圆柱形硅胶帽10(b)采用导热硅胶材料制成。Further, the capillary body 11 is made of copper, aluminum or alloy materials, and the first cylindrical silicone cap 10(a) and the second cylindrical silicone cap 10(b) are made of thermally conductive silicone material.
进一步的,所述矩形换热器1外壳采用铝合金材料,可根据励磁磁场特征具体选择圆柱体或者长方体的外形设计矩形换热器1内壁设卡槽用以固定挡板或者格栅。盖板与换热器连接采用螺纹连接使用硅胶条作为密封填充材料。换热器外壁贴真空绝热板,对换热器做绝热处理。Further, the outer shell of the rectangular heat exchanger 1 is made of aluminum alloy material, and the shape of a cylinder or a rectangular parallelepiped can be specifically selected according to the characteristics of the excitation magnetic field. The inner wall of the rectangular heat exchanger 1 is provided with a slot for fixing the baffle or grille. The connection between the cover plate and the heat exchanger adopts a threaded connection and uses a silica gel strip as a sealing filling material. The outer wall of the heat exchanger is pasted with a vacuum insulation board to heat the heat exchanger.
进一步的,所述矩形换热器1在吸热过程结束后会通过矩形换热器1上沿通孔处进气,将换热器内的存液由换热器下沿挤入蓄冷容器,在进入放热过程前蓄热容器先将携热流体打入换热器,换热器进行排气当排气完成后开启换热用水泵,系统进入放热过程;在放热过程结束后会通过换热器上沿通孔处进气,将换热器内的存液由换热器下沿通孔挤入蓄热容器,在进入吸热过程前蓄冷容器先将携热流体打入换热器,换热器进行排气当排气完成后开启换冷用水泵,系统进入吸热过程。Further, the rectangular heat exchanger 1 will take in air through the through holes at the upper edge of the rectangular heat exchanger 1 after the end of the heat absorption process, and squeeze the liquid stored in the heat exchanger into the cold storage container from the lower edge of the heat exchanger. Before entering the heat release process, the heat storage container first pumps the heat-carrying fluid into the heat exchanger, and the heat exchanger exhausts. When the exhaust is completed, the heat exchange water pump is turned on, and the system enters the heat release process; Through the air intake at the upper edge of the heat exchanger, the liquid stored in the heat exchanger is squeezed into the heat storage container from the lower edge of the heat exchanger. The cold storage container will first enter the heat-carrying fluid into the heat storage container before entering the heat absorption process. Heater, heat exchanger for exhaust. When exhaust is completed, the cold-exchange water pump is turned on, and the system enters the heat absorption process.
实施例2:Example 2:
根据图1,矩形换热器1沿磁场移动方向的宽40mm,沿磁场高度方向的高30mm,长80mm,由换热器壳体2、装填有磁工质的毛细管矩阵4、和盖板3三部分组成。其中换热器外壳和盖板由3mm铝合金切割或焊接而成。换热器壳体2与盖板3的连接处焊接5mm凸台用以装载硅胶密封胶条和盖板的固定。根据换热器内不同流程,以四流程为例,在换热器的盖板或壳体上沿开一个5mm第一通孔5通过法兰或焊接管道连接气路;换热器的盖板或壳体下沿开两个5mm第二通孔6(a)和第三通孔6(b)通过法兰或焊接管道连接液路。换热器外壁贴真空绝热板,对换热器做绝热处理。According to Figure 1, the rectangular heat exchanger 1 has a width of 40mm along the direction of magnetic field movement, a height of 30mm along the direction of the height of the magnetic field, and a length of 80mm. It consists of a heat exchanger shell 2, a capillary matrix 4 filled with a magnetic working medium, and a cover 3 It consists of three parts. The shell and cover of the heat exchanger are cut or welded from 3mm aluminum alloy. The joint of the heat exchanger shell 2 and the cover plate 3 is welded with a 5mm boss for loading the silicone sealing tape and fixing the cover plate. According to the different processes in the heat exchanger, taking the four processes as an example, a 5mm first through hole 5 is opened on the cover plate or shell of the heat exchanger to connect the gas circuit through flanges or welded pipes; the cover plate of the heat exchanger Or, two 5mm second through holes 6(a) and third through holes 6(b) are opened on the bottom edge of the shell to connect the liquid path through flanges or welded pipes. The outer wall of the heat exchanger is pasted with a vacuum insulation board to heat the heat exchanger.
根据图2、图7、图8和图9,装填磁工质的毛细管矩阵4由若干毛细管7、两个第一矩形挡板8(a)、第二矩形挡板8(b)和三个方形格栅第一方形格栅9(a)、第二方形格栅9(b)、第三方形格栅9(c)拼接组成。其中毛细管矩阵根据格栅和挡板来确定位置并固定,方形格栅与矩形挡板的相对位置通过等长的1mm厚铝合金条焊接固定。方形格栅之间位置错开如图所示形成液体的流道。格栅与挡板均采用2mm厚的铝合金板冲压一体成型,根据换热器性状分别裁剪成为宽×高为40mm×30mm的铝合金挡板和宽×高为30mm×30mm的铝合金格栅。在这一布置中,毛细管圆心的间距为2mm,毛细管壁之间的最短距离为0.7mm。格栅在其角落处留一孔不装填毛细管避免积气。此时磁工质在换热器中的体积占比在44%左右,孔隙度在56%左右。其中格栅孔径刚好允许毛细管穿过,挡板形成凹槽可以刚好卡住毛细管的一端。挡板的一个凹槽剖面如图5所示。According to Figure 2, Figure 7, Figure 8 and Figure 9, the capillary matrix 4 filled with magnetic working fluid consists of a number of capillaries 7, two first rectangular baffles 8 (a), a second rectangular baffle 8 (b) and three The first square grid 9(a), the second square grid 9(b), and the third-party grid 9(c) are spliced together. The position of the capillary matrix is determined and fixed according to the grid and the baffle, and the relative position of the square grid and the rectangular baffle is welded and fixed by the equal-length 1mm thick aluminum alloy strip. The positions of the square grids are staggered as shown in the figure to form liquid flow channels. The grille and the baffle are made of 2mm thick aluminum alloy plate stamped and integrally formed. According to the properties of the heat exchanger, they are cut into an aluminum alloy baffle with a width × height of 40mm × 30mm and an aluminum alloy grille with a width × height of 30mm × 30mm. . In this arrangement, the distance between the center of the capillary is 2mm, and the shortest distance between the walls of the capillary is 0.7mm. Leave a hole in the corner of the grille without filling the capillary to avoid air accumulation. At this time, the volume ratio of the magnetic working fluid in the heat exchanger is about 44%, and the porosity is about 56%. The aperture of the grid just allows the capillary tube to pass through, and the groove formed by the baffle can just clamp one end of the capillary tube. A groove section of the baffle is shown in Figure 5.
根据图6-9,装填磁工质的毛细管7由毛细管本体11、第一圆柱形硅胶帽10(a)、第二圆柱形硅胶帽10(b)和磁工质12三部分组成。其中毛细管外径为1.6mm壁厚为0.05mm,所用材质为铜、铝或其合金。圆柱形硅胶帽厚度0.1mm,采用导热硅胶材料。磁工质12为Gd-Si-Ge合金或其他巨热材料的10纳米级粉末与体积分数5%的10纳米级纳米碳粉末混合而成。制备过程中首先用第一圆柱形硅胶帽10(a)将毛细管的一头进行封口,并将磁工质12填入毛细管内,之后通过反复离心压实等方式将毛细管填实,最后用第二圆柱形硅胶帽10(b)将毛细管另一端封堵。在特殊情况下冲压半圆毛细管,以保证流道和各毛细管与流体均匀换热。According to Figs. 6-9, the capillary tube 7 filled with the magnetic working fluid is composed of the capillary body 11, the first cylindrical silica gel cap 10(a), the second cylindrical silica gel cap 10(b) and the magnetic working fluid 12. The outer diameter of the capillary tube is 1.6mm and the wall thickness is 0.05mm. The material used is copper, aluminum or their alloys. The cylindrical silicone cap has a thickness of 0.1mm and is made of thermally conductive silicone material. The magnetic working medium 12 is a mixture of 10 nanometer-sized powder of Gd-Si-Ge alloy or other huge thermal materials and 10 nanometer-sized carbon powder with a volume fraction of 5%. In the preparation process, first seal one end of the capillary with the first cylindrical silica gel cap 10(a), and fill the magnetic working medium 12 into the capillary, then fill the capillary with repeated centrifugal compaction, etc., and finally use the second The cylindrical silica gel cap 10(b) blocks the other end of the capillary. Under special circumstances, the semicircular capillary tube is punched to ensure that the flow channel and each capillary tube exchange heat evenly with the fluid.
实施例3:Example 3:
采用上述的磁制冷换热器构建的制冷制热系统,包括矩形换热器1和数据采集和控制系统17;所述矩形换热器1与设置在其外围的可移动磁场13相配合,所述矩形换热器1的第二通孔6(a)和第三通孔6(b)之间分别并连有蓄热容器14和蓄冷容器15,所述蓄热容器 14的出口与储热侧水泵21(a)的入口相连,储热侧水泵21(a)的出口与第一电动三通阀18(c)一个进口相连;所述第一电动三通阀18(c)的另一个进口与储冷侧水泵21(b)出口相连,储冷侧水泵21(b)入口与蓄冷容器15出口相连;第二电动三通阀18(b)的两出口分别与蓄热容器14和蓄冷容器15的入口相连;第一电动三通阀18(c)入口和第二电动三通阀18(b)出口分别对应连接矩形换热器1的第二通孔6(a)和第三通孔6(b);矩形换热器1的进气口通过第三电动三通阀18(a)连接有压缩空气储气罐16和排气阀19;The refrigeration and heating system constructed by the above-mentioned magnetic refrigeration heat exchanger includes a rectangular heat exchanger 1 and a data acquisition and control system 17; the rectangular heat exchanger 1 is matched with a movable magnetic field 13 arranged on its periphery, so A heat storage container 14 and a cold storage container 15 are connected in parallel between the second through hole 6(a) and the third through hole 6(b) of the rectangular heat exchanger 1, respectively. The outlet of the heat storage container 14 is connected to the heat storage container. The inlet of the side water pump 21(a) is connected, and the outlet of the heat storage side water pump 21(a) is connected to an inlet of the first electric three-way valve 18(c); the other of the first electric three-way valve 18(c) The inlet is connected to the outlet of the cold storage side water pump 21(b), the inlet of the cold storage side water pump 21(b) is connected to the outlet of the cold storage container 15; the two outlets of the second electric three-way valve 18(b) are respectively connected to the heat storage container 14 and the cold storage container 14 The inlet of the container 15 is connected; the inlet of the first electric three-way valve 18 (c) and the outlet of the second electric three-way valve 18 (b) are respectively connected to the second through hole 6 (a) and the third through hole of the rectangular heat exchanger 1 Hole 6(b); the air inlet of the rectangular heat exchanger 1 is connected to a compressed air storage tank 16 and an exhaust valve 19 through a third electric three-way valve 18(a);
进一步的,所述蓄热容器14内部安装有蓄热容器电子水位计20(a);Further, an electronic water level gauge 20(a) of the thermal storage container is installed inside the thermal storage container 14;
进一步的,所述蓄冷容器15内部安装有蓄冷容器电子水位计20(b)。Further, an electronic water level gauge 20 (b) of the cold storage container is installed inside the cold storage container 15.
实施例4:Example 4:
所述制冷系统的制热和制冷方法:The heating and cooling method of the refrigeration system:
制热储热过程:Heating and storage process:
Step1.1:通过数据采集和控制系统17分别控制第一电动三通阀18(c)、第二电动三通阀18(b)和第三电动三通阀18(a)使矩形换热器1、蓄热容器14、储热侧水泵21(a)相连形成储热循环;Step1.1: Control the first electric three-way valve 18(c), the second electric three-way valve 18(b) and the third electric three-way valve 18(a) separately through the data acquisition and control system 17 to make the rectangular heat exchanger 1. The heat storage container 14 and the heat storage side water pump 21(a) are connected to form a heat storage cycle;
Step1.2:排气阀19与矩形换热器1的气口相连,利用蓄热容器14高置将液体灌满矩形换热器1;Step1.2: The exhaust valve 19 is connected to the air port of the rectangular heat exchanger 1, and the heat storage container 14 is used to fill the rectangular heat exchanger 1 with liquid;
Step1.3:可移动磁场13开始为矩形换热器1励磁,矩形换热器1放热,储热侧水泵21(a)开启,蓄热容器14开始收集热量,并通过负载换热器将热量排出;Step1.3: The movable magnetic field 13 starts to excite the rectangular heat exchanger 1, the rectangular heat exchanger 1 releases heat, the heat storage side water pump 21(a) is turned on, and the heat storage container 14 starts to collect heat, and the heat is transferred through the load heat exchanger. Heat dissipation
Step1.4:当矩形换热器1不再释放热量时,储热侧水泵21(a)关闭,第三电动三通阀18(a)控制排气阀19关闭,压缩空气储气罐16开启;Step1.4: When the rectangular heat exchanger 1 no longer releases heat, the heat storage side water pump 21(a) is closed, the third electric three-way valve 18(a) controls the exhaust valve 19 to close, and the compressed air storage tank 16 opens ;
Step1.5:第一电动三通阀18(c)关闭,压缩空气将矩形换热器1内液体压入蓄热容器14,通过计算得到矩形换热器1内的储水量,当蓄热容器14内蓄热容器电子水位计20(a)所测量水位升高到相应容积时,第二电动三通阀18(b)关闭,制热过程结束;Step1.5: The first electric three-way valve 18(c) is closed, the compressed air presses the liquid in the rectangular heat exchanger 1 into the heat storage container 14, and the water storage capacity in the rectangular heat exchanger 1 is obtained by calculation. 14 When the water level measured by the electronic water level gauge 20(a) of the internal heat storage container rises to the corresponding volume, the second electric three-way valve 18(b) is closed, and the heating process ends;
制冷储冷过程:Refrigeration and cold storage process:
Step2.1:通过数据采集和控制系统17分别控制第一电动三通阀18(c)、第二电动三通阀18(b)和第三电动三通阀18(a)使矩形换热器1、蓄冷容器15、储冷侧水泵21(b)相连形成储冷循环;Step2.1: Control the first electric three-way valve 18(c), the second electric three-way valve 18(b) and the third electric three-way valve 18(a) separately through the data acquisition and control system 17 to make the rectangular heat exchanger 1. The cold storage container 15 and the cold storage side water pump 21(b) are connected to form a cold storage cycle;
Step2.2:排气阀19与矩形换热器1的气口相连,利用蓄冷容器15高置将液体灌满矩形换热器1;Step2.2: The exhaust valve 19 is connected to the air port of the rectangular heat exchanger 1, and the cold storage container 15 is used to fill the rectangular heat exchanger 1 with liquid;
Step2.3:可移动磁场13离开矩形换热器1,矩形换热器1吸热,储冷侧水泵21(b)开启, 蓄冷容器15开始收集冷量,并通过负载换热器将冷量排出;Step2.3: The movable magnetic field 13 leaves the rectangular heat exchanger 1, the rectangular heat exchanger 1 absorbs heat, the cold storage side water pump 21(b) is turned on, and the cold storage container 15 starts to collect cold energy, and the cold energy is transferred through the load heat exchanger discharge;
Step2.4:当矩形换热器1不再释放冷量时,储冷侧水泵21(b)关闭,第三电动三通阀18(a)控制排气阀19关闭,压缩空气储气罐16开启;Step2.4: When the rectangular heat exchanger 1 no longer releases cold capacity, the cold storage side water pump 21 (b) is closed, the third electric three-way valve 18 (a) controls the exhaust valve 19 to close, and the compressed air storage tank 16 Turn on
Step2.5:第一电动三通阀18(c)关闭,压缩空气将换热器内液体压入蓄冷容器15,通过计算得到矩形换热器1内的储水量,当蓄冷容器15内蓄冷容器电子水位计20(b)所测量水位升高到相应容积时,第二电动三通阀18(b)关闭,制冷过程结束;Step2.5: The first electric three-way valve 18(c) is closed, the compressed air presses the liquid in the heat exchanger into the cold storage container 15, and the water storage capacity in the rectangular heat exchanger 1 is calculated. When the cold storage container 15 is When the water level measured by the electronic water level gauge 20(b) rises to the corresponding volume, the second electric three-way valve 18(b) is closed, and the refrigeration process ends;
通过上述的制热储热过程和制冷储冷过程的交替形成相应的制热制冷工作循环。Through the alternation of the heating and storage process and the refrigeration and storage process, a corresponding heating and refrigeration working cycle is formed.

Claims (10)

  1. 一种磁制冷换热器,其特征其在于:它包括矩形换热器(1),所述矩形换热器(1)包括换热器壳体(2),所述换热器壳体(2)的内部安装有装填了磁工质(12)的毛细管矩阵(4),在换热器壳体(2)的两端安装有盖板(3)并将毛细管矩阵(4)封装在其内部;两侧盖板(3)或上换热器壳体(2)的上沿根据换热器内不同流程加工有用于进气和排气的第一通孔(5);两侧盖板(3)或上换热器壳体(2)的下沿加工有用于流通载热、载冷流体的第二通孔(6(a))和第三通孔(6(b))。A magnetic refrigeration heat exchanger, characterized in that it includes a rectangular heat exchanger (1), the rectangular heat exchanger (1) includes a heat exchanger shell (2), and the heat exchanger shell ( 2) A capillary matrix (4) filled with a magnetic working medium (12) is installed inside, a cover plate (3) is installed at both ends of the heat exchanger shell (2) and the capillary matrix (4) is encapsulated in it Inside; the upper edges of the cover plates (3) on both sides or the upper heat exchanger shell (2) are processed with first through holes (5) for air intake and exhaust according to different processes in the heat exchanger; cover plates on both sides (3) Or the lower edge of the upper heat exchanger shell (2) is processed with a second through hole (6(a)) and a third through hole (6(b)) for circulating heat and cold fluid.
  2. 根据权利要求1所述的一种磁制冷换热器,其特征在于:所述换热器壳体(2)采用矩形盒结构;所述换热器壳体(2)和盖板(3)都采用铝合金材料裁剪焊接拼装而成。The magnetic refrigeration heat exchanger according to claim 1, characterized in that: the heat exchanger shell (2) adopts a rectangular box structure; the heat exchanger shell (2) and the cover plate (3) They are all cut, welded and assembled with aluminum alloy materials.
  3. 根据权利要求1所述的一种磁制冷换热器,其特征在于:所述换热器壳体(2)与盖板(3)连接的位置焊接固定有凸台(2(a)),所述凸台(2(a))上安装有用于对换热器壳体(2)进行密封的硅胶密封胶条(2(b))。The magnetic refrigeration heat exchanger according to claim 1, characterized in that: the connection position of the heat exchanger shell (2) and the cover plate (3) is welded and fixed with a boss (2(a)), A silicone rubber sealing strip (2(b)) for sealing the heat exchanger shell (2) is installed on the boss (2(a)).
  4. 根据权利要求1所述的一种磁制冷换热器,其特征在于:所述毛细管矩阵(4)包括第一矩形挡板(8(a))和第二矩形挡板(8(b)),所述第一矩形挡板(8(a))和第二矩形挡板(8(b))之间均布安装有呈矩形布置的多根毛细管(7),所述毛细管(7)之间呈等间距上下交错布置有方形格栅组,并形成一个迂回的流道。The magnetic refrigeration heat exchanger according to claim 1, wherein the capillary matrix (4) includes a first rectangular baffle (8(a)) and a second rectangular baffle (8(b)) , The first rectangular baffle (8(a)) and the second rectangular baffle (8(b)) are uniformly installed with a plurality of capillaries (7) arranged in a rectangular shape, and the capillaries (7) Square grid groups are staggered up and down at equal intervals and form a circuitous flow channel.
  5. 根据权利要求4所述的一种磁制冷换热器,其特征在于:所述方形格栅组包括第一方形格栅(9(a))、第二方形格栅(9(b))和第三方形格栅(9(c));所述方形格栅组、第一矩形挡板(8(a))、第二方形格栅(9(b))和第三方形格栅(9(c))都采用铝合金板冲压一体化成型。The magnetic refrigeration heat exchanger according to claim 4, wherein the square grid group includes a first square grid (9(a)) and a second square grid (9(b)) And the third-party grid (9(c)); the square grid group, the first rectangular baffle (8(a)), the second square grid (9(b)) and the third-party grid ( 9(c)) are made of aluminum alloy plate stamping and integral forming.
  6. 根据权利要求4所述的一种磁制冷换热器,其特征在于:所述毛细管(7)包括毛细管本体(11),所述毛细管本体(11)的两个端头分别安装有用于对其进行封闭的第一圆柱形硅胶帽(10(a))和第二圆柱形硅胶帽(10(b)),在毛细管本体(11)的内部填充磁工质(12)。The magnetic refrigeration heat exchanger according to claim 4, characterized in that: the capillary tube (7) comprises a capillary body (11), and two ends of the capillary body (11) are respectively installed for The first cylindrical silica gel cap (10(a)) and the second cylindrical silica gel cap (10(b)) for sealing are filled with a magnetic working fluid (12) inside the capillary body (11).
  7. 根据权利要求1或6所述的一种磁制冷换热器,其特征在于:所述磁工质(12)为Gd-Si-Ge合金或其它巨热材料的10纳米级粉末与体积分数5%的10纳米级纳米碳粉末混合而成;制备过程中首先用第一圆柱形硅胶帽(10(a))将毛细管本体(11)的一端进行封口,并将磁工质(12)填入毛细管内,之后通过反复离心压实的方式将毛细管本体(11)填实,最后用第二圆柱形硅胶帽(10(b))将毛细管另一端封堵。The magnetic refrigeration heat exchanger according to claim 1 or 6, characterized in that: the magnetic working medium (12) is 10 nanometer-level powder of Gd-Si-Ge alloy or other giant thermal materials with a volume fraction of 5 % Of 10 nanometer-level nano-carbon powder; in the preparation process, first use the first cylindrical silica gel cap (10 (a)) to seal one end of the capillary body (11), and fill the magnetic working medium (12) Into the capillary, then the capillary body (11) is filled by repeated centrifugal compaction, and finally the other end of the capillary is blocked with a second cylindrical silica gel cap (10(b)).
  8. 根据权利要求6所述的一种磁制冷换热器,其特征在于:所述毛细管本体(11)采用铜、铝或合金材料制备而成,所述第一圆柱形硅胶帽(10(a))和第二圆柱形硅胶帽(10 (b))采用导热硅胶材料制成。The magnetic refrigeration heat exchanger according to claim 6, wherein the capillary body (11) is made of copper, aluminum or alloy materials, and the first cylindrical silica gel cap (10(a) ) And the second cylindrical silicone cap (10 (b)) are made of thermally conductive silicone material.
  9. 采用权利要求1-8任意一项所述磁制冷换热器构建的制冷制热系统,其特征在于:包括矩形换热器(1)和数据采集和控制系统(17);所述矩形换热器(1)与设置在其外围的可移动磁场(13)相配合,所述矩形换热器(1)的第二通孔(6(a))和第三通孔(6(b))之间分别并连有蓄热容器(14)和蓄冷容器(15),所述蓄热容器(14)的出口与储热侧水泵(21(a))的入口相连,储热侧水泵(21(a))的出口与第一电动三通阀(18(c))一个进口相连;所述第一电动三通阀(18(c))的另一个进口与储冷侧水泵(21(b))出口相连,储冷侧水泵(21(b))入口与蓄冷容器(15)出口相连;第二电动三通阀(18(b))的两出口分别与蓄热容器(14)和蓄冷容器(15)的入口相连;第一电动三通阀(18(c))入口和第二电动三通阀(18(b))出口分别对应连接矩形换热器(1)的第二通孔(6(a))和第三通孔(6(b));矩形换热器(1)的进气口通过第三电动三通阀(18(a))连接有压缩空气储气罐(16)和排气阀(19);The refrigeration and heating system constructed by using the magnetic refrigeration heat exchanger of any one of claims 1-8, characterized in that it comprises a rectangular heat exchanger (1) and a data acquisition and control system (17); the rectangular heat exchange The second through hole (6(a)) and the third through hole (6(b)) of the rectangular heat exchanger (1) are matched with the movable magnetic field (13) provided on the periphery of the device (1) A heat storage container (14) and a cold storage container (15) are respectively connected in parallel, and the outlet of the heat storage container (14) is connected with the inlet of the heat storage side water pump (21(a)), and the heat storage side water pump (21 The outlet of (a)) is connected to an inlet of the first electric three-way valve (18(c)); the other inlet of the first electric three-way valve (18(c)) is connected to the cold storage side water pump (21(b) )) is connected to the outlet, the inlet of the cold storage side water pump (21(b)) is connected to the outlet of the cold storage container (15); the two outlets of the second electric three-way valve (18(b)) are respectively connected to the heat storage container (14) and the cold storage container (14) The inlet of the container (15) is connected; the inlet of the first electric three-way valve (18(c)) and the outlet of the second electric three-way valve (18(b)) are respectively connected to the second through hole of the rectangular heat exchanger (1) (6(a)) and the third through hole (6(b)); the air inlet of the rectangular heat exchanger (1) is connected to a compressed air storage tank ( 16) and exhaust valve (19);
    所述蓄热容器(14)内部安装有蓄热容器电子水位计(20(a));An electronic water level gauge (20(a)) of the thermal storage container is installed inside the thermal storage container (14);
    所述蓄冷容器(15)内部安装有蓄冷容器电子水位计(20(b))。An electronic water level gauge (20(b)) of the cold storage container is installed inside the cold storage container (15).
  10. 采用权利要求9所述制冷系统的制热和制冷方法,其特征在于:The heating and cooling method using the refrigeration system of claim 9, characterized in that:
    制热储热过程:Heating and storage process:
    Step1.1:通过数据采集和控制系统(17)分别控制第一电动三通阀(18(c))、第二电动三通阀(18(b))和第三电动三通阀(18(a))使矩形换热器(1)、蓄热容器(14)、储热侧水泵(21(a))相连形成储热循环;Step1.1: Control the first electric three-way valve (18(c)), the second electric three-way valve (18(b)) and the third electric three-way valve (18() respectively through the data acquisition and control system (17) a)) Connect the rectangular heat exchanger (1), the heat storage container (14), and the heat storage side water pump (21(a)) to form a heat storage cycle;
    Step1.2:排气阀(19)与矩形换热器(1)的气口相连,利用蓄热容器(14)高置将液体灌满矩形换热器(1);Step1.2: The exhaust valve (19) is connected with the air port of the rectangular heat exchanger (1), and the heat storage container (14) is used to fill the rectangular heat exchanger (1) with liquid;
    Step1.3:可移动磁场(13)开始为矩形换热器(1)励磁,矩形换热器(1)放热,储热侧水泵(21(a))开启,蓄热容器(14)开始收集热量,并通过负载换热器将热量排出;Step1.3: The movable magnetic field (13) starts to excite the rectangular heat exchanger (1), the rectangular heat exchanger (1) releases heat, the heat storage side water pump (21(a)) is turned on, and the heat storage container (14) starts Collect heat, and discharge the heat through the load heat exchanger;
    Step1.4:当矩形换热器(1)不再释放热量时,储热侧水泵(21(a))关闭,第三电动三通阀(18(a))控制排气阀(19)关闭,压缩空气储气罐(16)开启;Step1.4: When the rectangular heat exchanger (1) no longer releases heat, the heat storage side water pump (21(a)) is closed, and the third electric three-way valve (18(a)) controls the exhaust valve (19) to close , The compressed air storage tank (16) is opened;
    Step1.5:第一电动三通阀(18(c))关闭,压缩空气将矩形换热器(1)内液体压入蓄热容器(14),通过计算得到矩形换热器(1)内的储水量,当蓄热容器(14)内蓄热容器电子水位计(20(a))所测量水位升高到相应容积时,第二电动三通阀(18(b))关闭,制热过程结束;Step1.5: The first electric three-way valve (18(c)) is closed, the compressed air presses the liquid in the rectangular heat exchanger (1) into the heat storage container (14), and the rectangular heat exchanger (1) is obtained by calculation When the water level measured by the electronic water level gauge (20(a)) of the thermal storage vessel in the thermal storage vessel (14) rises to the corresponding volume, the second electric three-way valve (18(b)) is closed, heating End of the process;
    制冷储冷过程:Refrigeration and cold storage process:
    Step2.1:通过数据采集和控制系统(17)分别控制第一电动三通阀(18(c))、第二电动三通阀(18(b))和第三电动三通阀(18(a))使矩形换热器(1)、蓄冷容器(15)、储冷侧水泵(21(b))相连形成储冷循环;Step2.1: Control the first electric three-way valve (18(c)), the second electric three-way valve (18(b)) and the third electric three-way valve (18() respectively through the data acquisition and control system (17) a)) Connect the rectangular heat exchanger (1), the cold storage container (15), and the cold storage side water pump (21(b)) to form a cold storage cycle;
    Step2.2:排气阀(19)与矩形换热器(1)的气口相连,利用蓄冷容器(15)高置将液体灌满矩形换热器(1);Step2.2: The exhaust valve (19) is connected to the air port of the rectangular heat exchanger (1), and the cold storage container (15) is used to fill the rectangular heat exchanger (1) with liquid;
    Step2.3:可移动磁场(13)离开矩形换热器(1),矩形换热器(1)吸热,储冷侧水泵(21(b))开启,蓄冷容器(15)开始收集冷量,并通过负载换热器将冷量排出;Step2.3: The movable magnetic field (13) leaves the rectangular heat exchanger (1), the rectangular heat exchanger (1) absorbs heat, the cold storage side water pump (21(b)) is turned on, and the cold storage container (15) starts to collect cold energy , And discharge the cold through the load heat exchanger;
    Step2.4:当矩形换热器(1)不再释放冷量时,储冷侧水泵(21(b))关闭,第三电动三通阀(18(a))控制排气阀(19)关闭,压缩空气储气罐(16)开启;Step2.4: When the rectangular heat exchanger (1) no longer releases cold capacity, the cold storage side water pump (21(b)) is closed, and the third electric three-way valve (18(a)) controls the exhaust valve (19) Closed, the compressed air storage tank (16) is opened;
    Step2.5:第一电动三通阀(18(c))关闭,压缩空气将换热器内液体压入蓄冷容器(15),通过计算得到矩形换热器(1)内的储水量,当蓄冷容器(15)内蓄冷容器电子水位计(20(b))所测量水位升高到相应容积时,第二电动三通阀(18(b))关闭,制冷过程结束;Step2.5: The first electric three-way valve (18(c)) is closed, the compressed air presses the liquid in the heat exchanger into the cold storage container (15), and the water storage capacity in the rectangular heat exchanger (1) is obtained by calculation. When the water level measured by the electronic water level gauge (20(b)) of the cold storage container in the cold storage container (15) rises to the corresponding volume, the second electric three-way valve (18(b)) is closed, and the refrigeration process ends;
    通过上述的制热储热过程和制冷储冷过程的交替形成相应的制热制冷工作循环。Through the alternation of the heating and storage process and the refrigeration and storage process, a corresponding heating and refrigeration working cycle is formed.
PCT/CN2020/123927 2019-10-30 2020-10-27 Magnetic refrigeration heat exchanger and refrigeration heating system and method WO2021083129A1 (en)

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