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    • 1. 发明授权
    • Food refrigeration system and method incorporating a cryogenic heat
transfer apparatus and method
    • 包含低温传热装置和方法的食品制冷系统和方法
    • US5218826A
    • 1993-06-15
    • US918903
    • 1992-07-22
    • Mark J. KirschnerWilliam KulikRustam SethnaRon C. Lee
    • Mark J. KirschnerWilliam KulikRustam SethnaRon C. Lee
    • A23L3/36A23L3/375F25D9/00
    • F25D9/00A23L3/361A23L3/375
    • The present invention provides a food processing system and method for refrigerating articles of food. The food processing system includes at least two cooling stages formed by a cryogenic freezer and a hydrocooler. The cryogenic freezer receives the articles of food and transfers heat from the articles of food to the cryogen so that the articles of food are refrigerated. After the transfer of heat from the articles of food to the cryogen, the cryogen boils off to form cryogenic vapor. The hydrocooler receives the articles of food prior to the cryogenic freezer and transfers heat from the articles of food to supplied cooling water. Such heat transfer reduces the quantity of cryogen required to refrigerate the articles of food. Additionally, an eductor is connected to a pump and to vent line from the cryogenic freezer. The cooling water is pumped through the eductor to suction cryogenic vapor from the cryogenic freezer and to mix the cryogenic vapor and the cooling water prior to reception of the cooling water in the hydrocooler. Such mixing transfers heat from the cooling water to the cryogenic vapor to increase the heat transfer between the articles and the cooling water in the hydrocooler. As a result of such increased heat transfer, the amount of cryogen required in refrigerating the articles is further reduced The eductor and pump combination has general application to the cooling of articles.
    • 本发明提供了一种用于冷冻食品的食品加工系统和方法。 食品加工系统包括由低温冷冻器和冷却器形成的至少两个冷却段。 低温冷冻器接收食品,并将热量从食物物质传递到冷冻剂,以使食品冷藏。 在将食物从制品转移到冷冻剂之后,冷冻剂沸腾,形成低温蒸气。 冷冻器在低温冷冻机之前接收食物,并将热量从食物物质传送到供应的冷却水。 这种热传递减少了冷藏食品的所需的冷冻剂量。 此外,喷射器连接到泵并从低温冷冻器排出管线。 将冷却水通过喷射器泵送到来自低温冷冻器的低温蒸汽,并在冷却器中接收到冷却水之前混合低温蒸气和冷却水。 这种混合将热量从冷却水转移到低温蒸汽,以增加物品与冷却器中的冷却水之间的热传递。 由于这种增加的热传递的结果,制冷物品所需的制冷剂的量进一步减少。喷射器和泵组合一般适用于物品的冷却。
    • 2. 发明授权
    • Refrigeration device
    • 制冷装置
    • US5438845A
    • 1995-08-08
    • US263230
    • 1994-06-21
    • Mark J. KirschnerRon C. Lee
    • Mark J. KirschnerRon C. Lee
    • A23L3/375F25B9/00F25D13/06F28B9/00
    • F25D13/067A23L3/375F25B9/004
    • A refrigeration device in which a heat load is refrigerated within a refrigeration chamber. Refrigerant is supplied, preferably, from a supply of turboexpanded air employing a compressor to compress the air and a turboexpander to expand the compressed air to a low temperature. A venturi-like device such as an ejector circulates the refrigerant within a circulation path within the refrigeration chamber so that heat is transferred from the heat load to the refrigerant. An incoming mass flow rate of the refrigerant is delivered to a high pressure inlet of the venturi-like device and a recirculation mass flow rate of the refrigerant is received within the low pressure inlet from the circulation path after the refrigerant has heat transferred thereto. A high pressure outlet discharges a mixture of the refrigerant that comprises the incoming and recirculation mass flow rates to the circulation path and prior to the heat load. Controls are provided to either control the recirculation mass flow rate of the refrigerant or a by-pass flow of refrigerant in a by-pass line communicating between the high pressure inlet and outlet. Such control acts to control circulation within the circulation path.
    • 一种其中热负荷在冷藏室内冷藏的制冷装置。 优选地,从供应涡轮膨胀的空气供应制冷剂,该空气采用压缩机压缩空气,涡轮膨胀机将压缩空气膨胀至低温。 诸如喷射器的文丘里状装置在制冷室内的循环路径内循环制冷剂,使得热量从热负荷传递到制冷剂。 制冷剂的进入质量流量被输送到文氏管状装置的高压入口,并且在制冷剂传递到其上之后,制冷剂的再循环质量流量从循环路径接收在低压入口内。 高压出口将包括进入和再循环质量流量的制冷剂的混合物排出到循环路径并在热负荷之前。 提供控制以控制制冷剂的再循环质量流量或在高压入口和出口之间连通的旁通管线中的制冷剂的旁路流量。 这种控制用于控制循环路径内的循环。
    • 4. 发明授权
    • Cryogen delivery apparatus
    • 低温输送装置
    • US5018358A
    • 1991-05-28
    • US496397
    • 1990-03-20
    • Ron C. LeeMark J. Kirschner
    • Ron C. LeeMark J. Kirschner
    • F17C9/00F17C13/02
    • F17C13/02F17C9/00F17C2203/0329F17C2203/0391F17C2205/0332F17C2221/013F17C2221/014F17C2223/0161F17C2225/0123F17C2225/0161F17C2250/061F17C2250/0673F17C2270/05
    • The present invention relates to an apparatus for delivery of pure gaseous and liquid forms of cryogen. The apparatus includes a pressure vessel for receiving a liquid form of the cryogen. A liquid-vapor interface is maintained within the pressure vessel by a liquid level detector and a cut-off valve connected to the level detector to vent the gaseous form of the cryogen to the atmosphere when the liquid form falls below a predetermined level. A heated overflow tube projects into the pressure vessel and is positioned at the predetermined level of the liquid. When the liquid rises above the predetermined level, it flowws into the overflow tube and is heated to vapor to add to the gaseous form of the cryogen within the pressure vessel. An outlet conduit is provided for delivering the gas and liquid forms of the cryogen from the pressure vessel. The conduit has a moveable end section located within the pressure vessel. When the movable end section is moved above the level of a liquid-vapor interface, the gas form of the material is delivered from the conduit; and when the moveable end section is positioned below the liquid-vapor interface, a pure liquid form of the cryogen is delivered from the pressure vessel. Movement of the moveable end section of the conduit is preferably controlled by a solenoid connected to a timing circuit.
    • 本发明涉及用于输送纯气体和液体形式的冷冻剂的装置。 该装置包括用于接收液体形式的冷冻剂的压力容器。 通过液位检测器和连接到液位检测器的截止阀将液体 - 蒸汽界面保持在压力容器内,以在液体形式下降到预定水平以下时将气态形式的冷冻剂排放到大气中。 加热的溢流管伸入压力容器中并且位于液体的预定水平。 当液体升高到高于预定水平时,它流入溢流管并被加热至蒸气以加压至压力容器内的气态形式的冷冻剂。 提供出口导管,用于从压力容器输送冷冻剂的气体和液体形式。 导管具有位于压力容器内的可移动端部。 当可移动端部移动到高于液 - 液界面的高度时,材料的气体形式从导管输送; 并且当可移动端部位于液 - 蒸汽界面下方时,冷却剂的纯液体形式从压力容器输送。 导管的可移动端部的移动优选地由连接到定时电路的螺线管控制。