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1.发明授权Method and apparatus for retention of a refrigerant fluid in a refrigeration enclosure 失效用于将制冷剂流体保持在冷藏箱中的方法和装置
公开(公告)号：US5966946A
公开(公告)日：1999-10-19
申请号：US92933
申请日：1998-06-08
CPC分类号： F25D29/001 , F25D3/11
摘要： The method of the invention is based on the comparison of local vapor concentrations at the inlet and outlet refrigeration ports and taking action based on that comparison. Control apparatus incorporating the invention is installed inside a refrigeration enclosure, adjacent to a port, preferably at the lowermost port. If the enclosure contains multiple ports at similar height, then each port has a form of the control apparatus attached to it. The control apparatus adjusts a flow of vapor leaving the interior of the enclosure. The control apparatus includes a duct assembly and a blower system. The bottom portion of the duct assembly is a tunnel enclosure through which a conveyor belt passes. Connected to an inside edge of the tunnel enclosure is a duct that extends upward from the conveyor belt. A blower for this duct either sucks vapor away from the conveyor belt or blows vapor from the enclosure interior toward the belt. Regardless of the flow direction, a vapor curtain forms inside the tunnel enclosure and represents a transitional region from all vapor to all air. Control of the blower for the duct assembly is based on vapor concentrations in the tunnel enclosures adjacent to each port. A microprocessor compares measured concentration levels and alters the blower motor frequency in such a manner as to minimize the difference in concentration levels at each port.
摘要翻译： 本发明的方法是基于对入口和出口制冷端口的局部蒸汽浓度的比较，并基于该比较采取行动。 结合本发明的控制装置安装在与端口相邻的制冷机壳中，优选在最下端的端口。 如果机箱包含多个类似高度的端口，则每个端口都具有连接到其上的控制设备的形式。 控制装置调节离开外壳内部的蒸气流。 控制装置包括管道组件和鼓风机系统。 管道组件的底部是输送带通过的隧道外壳。 连接到隧道外壳的内边缘是从传送带向上延伸的管道。 用于该管道的鼓风机将蒸汽从传送带吸入或从外壳内部朝向带吹送蒸气。 不管流动方向如何，蒸气幕形成在隧道外壳内，代表从所有蒸气到全部空气的过渡区域。 用于管道组件的鼓风机的控制基于与每个端口相邻的隧道外壳中的蒸汽浓度。 微处理器比较测量的浓度水平并改变鼓风机电机的频率，以使每个端口的浓度水平差异最小化。
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公开(公告)号：US10111453B2
公开(公告)日：2018-10-30
申请号：US14681714
申请日：2015-04-08
摘要： Disclosed are methods and apparatus for forming frozen food products, especially frozen foamed food products wherein the products contain bubbles having a reduced average size preferably in a narrow size range or contain ice crystals having reduced size.
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公开(公告)号：US5444985A
公开(公告)日：1995-08-29
申请号：US242531
申请日：1994-05-13
CPC分类号： F25D3/11
摘要： A tunnel freezer uses carbon dioxide snow to directly contact product carried on a conveyor belt passing through the freezer. Fans are provided above and below the upper conveyor belt run carrying the product, with the fans above and below having downwardly directed exhaust. Trough-shaped deflector plates are provided adjacent the lower fans to circulate a flow adjacent the underneath surface of the upper conveyor belt run. Preferably, circulation adjacent the upper conveyor belt run is generally parallel to the upper conveyor belt run, and turning vanes are provided to deflect the flow upwardly through the upper conveyor belt run. Freezers may be provided with one or more cooling zones arranged in series along the path of conveyor belt travel.
摘要翻译： 隧道式冷冻机使用二氧化碳雪直接接触通过冷冻机的传送带上携带的产品。 风扇设置在承载产品的上部输送带行程的上方和下方，上方和下方的风扇具有向下排列的排气。 在下部风扇附近提供槽形偏转板，以使邻近上部输送带运行的下表面的流动循环。 优选地，邻近上传送带行程的循环通常平行于上传送带行程，并且提供转动叶片以使流向上偏转上传送带运行。 冷冻机可以设置有沿传送带行进路径串联设置的一个或多个冷却区域。
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公开(公告)号：US5170631A
公开(公告)日：1992-12-15
申请号：US704806
申请日：1991-05-23
申请人： Gary D. Lang , Larry M. Rohr
发明人： Gary D. Lang , Larry M. Rohr
CPC分类号： F25D25/04 , F25D16/00 , B65G2207/24
摘要： Combined cryogenic and mechanical refrigeration freezer utilizing an open spiral conveyor for transporting food to be frozen through a first cryogenic zone enclosed by a secondary housing and then through a mechanically refrigerated zone subjected to circulating air cooled by mechanical refrigeration and cryogenic vapor from the first cryogenic zone.
摘要翻译： 组合的低温和机械冷冻冷冻机，其利用开放的螺旋输送机，用于运输通过由第二壳体包围的第一低温区域进行冷冻的食物，然后通过机械冷冻区域经受来自第一低温区域的机械冷冻和低温蒸气冷却的循环空气 。
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公开(公告)号：US5042262A
公开(公告)日：1991-08-27
申请号：US520773
申请日：1990-05-08
申请人： Roger F. Gyger , Gary D. Lang , Kenneth L. Burgers
发明人： Roger F. Gyger , Gary D. Lang , Kenneth L. Burgers
CPC分类号： F25B41/00 , A23L3/361 , A23L3/362 , F25B7/00 , F25D13/06 , B65G2207/24 , F25B2309/06 , F25B9/008
摘要： A food freezer having a mechanical refrigeration system comprising first and second closed-loop fluid circuits, wherein the first fluid circuit employs carbon dioxide as its refrigerant and transfers heat to the second fluid circuit, which in turn transfers heat to the environment or to another fluid circuit. In the first fluid circuit evaporator, carbon dioxide is maintained at pressures between 60.4 psig and 120 psig. In a preferred embodiment of the invention, the freezer employs at least two separate blowers or fans for circulation of air or other gas in the freezer enclosure. One blower/fan operates continuously to maintain circulation of cold air or gas in the freezer. The other blower/fan operates intermittently or at variable speeds to vary air flow across the evaporator, and thereby increase or decrease heat transfer from the freezer interior to the first fluid circuit evaporator to maintain the freezer interior at a desired temperature or within a desired temperature range.
摘要翻译： 一种具有包括第一和第二闭环流体回路的机械制冷系统的食品冷冻机，其中所述第一流体回路采用二氧化碳作为其制冷剂并将热量传递到所述第二流体回路，所述第二流体回路又将热传递到环境或另一流体 电路。 在第一流体回路蒸发器中，二氧化碳保持在60.4psig至120psig之间的压力。 在本发明的优选实施例中，冷冻器采用至少两个分开的鼓风机或风扇，用于在冷冻箱中循环空气或其它气体。 一个鼓风机/风扇连续运转，以保持冷藏室内冷空气或气体的循环。 另一鼓风机/风扇间歇地或以可变速度工作以改变蒸发器上的气流，从而增加或减少从冷冻室内部到第一流体回路蒸发器的热传递，以将冷冻室内部保持在所需温度或期望温度 范围。
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公开(公告)号：US06497106B2
公开(公告)日：2002-12-24
申请号：US09761150
申请日：2001-01-17
IPC分类号： F25D1306
CPC分类号： A23L3/363 , A23B4/062 , A23B4/064 , A23L3/361 , A23L3/362 , A23L3/375 , F25D3/11 , F25D29/001 , F25D2700/16
摘要： Disclosed are a method and apparatus for chilling food product, employing (A) cooling means comprising (1) a rotatable drum, (2) means in said drum for urging pieces through said drum, (3) cryogen dispensing means, and (4) means for rotating said drum; (B) feeding means which includes means for automatically sensing the mass flow rate at which said pieces are being fed into said inlet and for generating electrical signals corresponding to said rate; (C) electronic control means responsive to said signals and temperature inputs for preventing premature flow of cryogen and for automatically controlling the rate at which cryogen is fed so as to lower the temperature of said pieces to the desired exit temperature.
摘要翻译： 本发明公开了一种冷冻食品的方法和装置，（A）冷却装置，包括（1）可旋转的滚筒，（2）在所述滚筒中的装置，用于通过所述滚筒推动碎片，（3）冷冻剂分配装置，（4） 用于旋转所述滚筒的装置;（B）馈送装置，其包括用于自动感测所述碎片被馈送到所述入口中的质量流量的装置，以及用于产生对应于所述速率的电信号;（C）电子控制装置， 信号和温度输入，用于防止冷冻剂过早流动，并自动控制供应冷冻剂的速率，以便将所述件的温度降低到所需的出口温度。
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公开(公告)号：US06176102B1
公开(公告)日：2001-01-23
申请号：US09222812
申请日：1998-12-30
IPC分类号： F25B700
CPC分类号： F25B9/006 , C09K5/042 , C09K5/045 , C09K2205/13 , F25B1/10
摘要： A method for providing refrigeration such as to an insulated enclosure wherein a defined multicomponent refrigerant fluid undergoes a phase change coupled with Joule-Thomson expansion to generate refrigeration over a wide temperature range which may comprise from ambient to low temperatures.
摘要翻译： 一种用于提供制冷的方法，例如到绝缘外壳，其中限定的多组分制冷剂流体经过与焦耳 - 汤姆森膨胀相结合的相变，以在可能包括从环境温度到低温的宽温度范围内产生制冷。
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公开(公告)号：US5205135A
公开(公告)日：1993-04-27
申请号：US791893
申请日：1991-11-13
申请人： Gary D. Lang
发明人： Gary D. Lang
CPC分类号： A23L3/361 , A23L3/375 , F25D13/067 , F25D16/00 , F25D3/11 , B65G2207/24
摘要： A food freezer for continuous freezing of food products utilizing a helical conveyor for transporting the food products through an enclosure having a first cooling zone in which the food products are cooled sufficiently to freeze the exterior surface, and a second cooling zone in which the interior of the food products are frozen. Refrigeration apparatus cools an atmosphere gas within the enclosure and baffle means directs the coldest gas through the food products in the first cooling zone and the gas from the first cooling zone is circulated to the second cooling zone where it passes across the food products in a direction opposite to the direction of travel through the second cooling zone.
摘要翻译： 一种食品冷冻机，用于使用螺旋输送机连续冷冻食品，所述螺旋输送机用于通过具有第一冷却区域的食品输送食物，所述第一冷却区域足以冷冻所述食品的外表面;以及第二冷却区域， 食品被冻结。 制冷装置冷却外壳内的气氛气体，并且挡板装置引导最冷气体通过第一冷却区域中的食品，并且来自第一冷却区域的气体循环到第二冷却区域，在该第二冷却区域，其沿着方向穿过食品 与通过第二冷却区的行进方向相反。
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公开(公告)号：US4783972A
公开(公告)日：1988-11-15
申请号：US114228
申请日：1987-10-29
CPC分类号： F25D3/11 , F25D2317/0681
摘要： A cryogenic freezer having a thermally insulated tunnel-like enclosure with an entrance and an exit and means for conveying products being frozen therethrough. Products are contacted with liquid cryogen at a region generally near the entrance and a blower located closer to the entrance than to the exit controls flow of cryogen vapor. Upstream and downstream baffles and dampers associated with blower are linked together for complementary movement to selectively regulate the upstream and downstream flow of vapor discharged from the blower. Additional blowers circulate the cold cryogenic vapor transverse to the direction of the conveying means. The temperature of vapor leaving the region of the entrance is monitored the orientation of the baffle and damper arrangement is adjusted in accordance with the temperature monitored. The food products can be contacted by liquid nitrogen in a reservoir facilitates cleaning and retards inefficient vaporization.
摘要翻译： 具有具有入口和出口的隔热隧道状外壳的低温冷冻器以及用于输送被冷冻的产品的装置。 产品在通常靠近入口的区域和位于入口处更靠近冷冻剂蒸气的出口控制流动的鼓风机处与液体冷冻剂接触。 与鼓风机相关联的上游和下游挡板和阻尼器连接在一起用于互补运动，以选择性地调节从鼓风机排出的蒸气的上游和下游流动。 另外的鼓风机将冷的低温蒸气横向于传送装置的方向。 监测离开入口区域的蒸汽的温度，对挡板的方向进行监测，根据监测的温度调节阻尼器装置。 食品可以通过液氮在储存器中接触，有助于清洁并延缓低效汽化。
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公开(公告)号：US20140308423A1
公开(公告)日：2014-10-16
申请号：US14315086
申请日：2014-06-25
IPC分类号： A23G9/46
摘要： Disclosed are methods and apparatus for forming frozen foam products, including edible products, using air or gases or gas mixtures having an average molecular weight larger than that of air, wherein the products contain bubbles having a reduced average size preferably in a narrow size range.
摘要翻译： 公开了使用平均分子量大于空气的空气或气体或气体混合物形成冷冻泡沫产品的方法和设备，包括食用产品，其中产品含有平均尺寸较小的气泡，优选地在窄尺寸范围内。
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