公开(公告)号：US4953365A

公开(公告)日：1990-09-04

申请号：US373056

申请日：1989-06-28

Applicant: Gary D. Lang ,  Donald S. Finan ,  George D. Rhoades

Inventor： Gary D. Lang ,  Donald S. Finan ,  George D. Rhoades

IPC: A23L3/36 ,  F25D3/11 ,  F25D13/06 ,  F25D25/04

CPC classification number: A23L3/361 ,  F25D13/067 ,  F25D25/04 ,  F25D3/11 ,  B65G2207/24

Abstract: A food freezer having a thermally insulated enclosure wherein an endless conveyor having a lower loading section, a main helical section and an uppermost unloading section is primarily driven by engagement between its inner edge and the sidewall of a rotatable center cage, which includes a plurality of uniformly spaced apart vertical bars. The lower end of the center cage can be blocked, and a centrifugal blower is axially located at the upper end of the cage to suck gas from the interior of the cage and discharge it horizontally outward along the undersurface of the top wall so that it flows outward, then downward and, finally, radially inward in an overall generally toroidal pattern through the tiers of the helical belt section where it withdraws heat from the freezes the food products being carried therealong. Various arrangements, e.g., adjustable restrictors, are illustrated for creating vertical gradients in the radial inflow of gas through the helical section so that the cold gas flows inward at a greater rate in lower regions of the helical section than in the upper region. Cryogen injection devices for spraying a cryogen, such as liquid CO.sub.2 or liquid N.sub.2, radially inward to impinge upon the food products on the belt, may be located at selected positions about the perimeter and at various vertical levels. Radial inflow of gas adds to the effectiveness of the impinging spray against the food products; however, the overall freezer construction is also advantageously employed with mechanical cooling of the gaseous atmosphere via one or more heat exchange coils.

Abstract translation: 一种具有绝热外壳的食品冷冻机，其中具有下加载部分，主螺旋部分和最上部卸载部分的环形输送机主要由其内边缘和可旋转中心保持架的侧壁之间的接合驱动，其包括多个 均匀分隔的垂直条。 中心笼的下端可以被阻挡，离心鼓风机轴向位于保持架的上端，以从笼的内部吸入气体并沿着顶壁的下表面向外水平地排出，使其流动 向外，然后向下并且最后径向向内，通过螺旋带部分的各层，其中其从其中抽出热量使其沿着被携带的食品冷冻。 示出了各种布置，例如可调节的限制器，用于在通过螺旋部分的气体的径向流入中产生垂直梯度，使得冷气体在螺旋部分的下部区域中以比在上部区域更低的速度向内流动。 用于喷射冷却剂（例如液体CO 2或液体N 2）径向向内以撞击在带上的食品的低温注射装置可以位于围绕周边和各种垂直水平的选定位置。 气体的径向流入增加了对食品的冲击喷雾的有效性; 然而，整体冷冻结构也有利地用于经由一个或多个热交换盘管的气态气氛的机械冷却。

公开(公告)号：US5020330A

公开(公告)日：1991-06-04

申请号：US496457

申请日：1990-03-20

Applicant: George D. Rhoades ,  Gary D. Lang

Inventor： George D. Rhoades ,  Gary D. Lang

IPC: A23L3/36 ,  F25D3/11 ,  F25D13/06 ,  F25D25/04

CPC classification number: F25D13/067 ,  A23L3/361 ,  F25D25/04 ,  F25D3/11 ,  B65G2207/24

Abstract: A food freezer having a thermally insulated enclosure and an endless conveyor having a loading section, a food freezing section and an unloading section. Blowers circulate gas throughout the interior of the enclosure, and devices for injecting liquid CO.sub.2 to preferably cause CO.sub.2 snow particles to impinge upon the food products on the belt are located at selected positions about the belt and may be at various vertical levels, some of which are preferably at least slightly above the belt. By piping the liquid CO.sub.2 so that it flows only upward and/or horizontally toward the spray nozzles within the thermally insulated enclosure, any solid CO.sub.2 that may accumulate adjacent the upstream side of the spray nozzle orifices is melted by CO.sub.2 vapor which gravitates upward in the vertical piping.

Abstract translation: 具有绝热外壳的食品冷冻机和具有装载部分，食物冷冻部分和卸载部分的环形输送机。 鼓风机将气体循环到外壳的整个内部，并且用于注入液体CO 2以优选地使二氧化碳雪粒子撞击在带上的食品上的装置位于围绕带的选定位置，并且可处于各种垂直水平，其中一些 优选地至少稍微高于带。 通过管道液体CO 2，使其仅在隔热外壳内的喷嘴上方和/或水平方向流动，可能积聚在喷嘴孔的上游侧的任何固体CO 2都会被CO 2蒸气熔化，CO 2蒸气在 垂直管道。

公开(公告)号：US10111453B2

公开(公告)日：2018-10-30

申请号：US14681714

申请日：2015-04-08

Applicant: Sameer H. Israni ,  Balazs Hunek ,  Theodore H. Gasteyer, III ,  Gary D. Lang

Inventor： Sameer H. Israni ,  Balazs Hunek ,  Theodore H. Gasteyer, III ,  Gary D. Lang

IPC: A23L3/375 ,  A23G9/04 ,  A23P30/40

Abstract: 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.

公开(公告)号：US5444985A

公开(公告)日：1995-08-29

申请号：US242531

申请日：1994-05-13

Applicant: Gary D. Lang ,  Walter C. Broderdorf ,  William M. Blumthal

Inventor： Gary D. Lang ,  Walter C. Broderdorf ,  William M. Blumthal

IPC: F25D3/11 ,  F25D13/06 ,  F25D3/12 ,  F25D17/02 ,  F25D25/04

CPC classification number: F25D3/11

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5170631A

公开(公告)日：1992-12-15

申请号：US704806

申请日：1991-05-23

Applicant: Gary D. Lang ,  Larry M. Rohr

Inventor： Gary D. Lang ,  Larry M. Rohr

IPC: F25D16/00 ,  F25D25/04

CPC classification number: F25D25/04 ,  F25D16/00 ,  B65G2207/24

Abstract: 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.

Abstract translation: 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 。

公开(公告)号：US5042262A

公开(公告)日：1991-08-27

申请号：US520773

申请日：1990-05-08

Applicant: Roger F. Gyger ,  Gary D. Lang ,  Kenneth L. Burgers

Inventor： Roger F. Gyger ,  Gary D. Lang ,  Kenneth L. Burgers

IPC: F25B9/00 ,  A23L3/36 ,  F25B7/00 ,  F25B41/00 ,  F25D13/06

CPC classification number: F25B41/00 ,  A23L3/361 ,  A23L3/362 ,  F25B7/00 ,  F25D13/06 ,  B65G2207/24 ,  F25B2309/06 ,  F25B9/008

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06497106B2

公开(公告)日：2002-12-24

申请号：US09761150

申请日：2001-01-17

Applicant: Gary D. Lang ,  Robert J. Chamberlain

Inventor： Gary D. Lang ,  Robert J. Chamberlain

IPC: F25D1306

CPC classification number: A23L3/363 ,  A23B4/062 ,  A23B4/064 ,  A23L3/361 ,  A23L3/362 ,  A23L3/375 ,  F25D3/11 ,  F25D29/001 ,  F25D2700/16

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06176102B1

公开(公告)日：2001-01-23

申请号：US09222812

申请日：1998-12-30

Applicant: Richard A. Novak ,  Gary D. Lang ,  Arun Acharya ,  John Henri Royal ,  Mohammad Abdul-Aziz Rashad

Inventor： Richard A. Novak ,  Gary D. Lang ,  Arun Acharya ,  John Henri Royal ,  Mohammad Abdul-Aziz Rashad

IPC: F25B700

CPC classification number: F25B9/006 ,  C09K5/042 ,  C09K5/045 ,  C09K2205/13 ,  F25B1/10

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5205135A

公开(公告)日：1993-04-27

申请号：US791893

申请日：1991-11-13

Applicant: Gary D. Lang

Inventor： Gary D. Lang

IPC: A23L3/36 ,  A23L3/375 ,  F25D3/11 ,  F25D13/06 ,  F25D16/00

CPC classification number: A23L3/361 ,  A23L3/375 ,  F25D13/067 ,  F25D16/00 ,  F25D3/11 ,  B65G2207/24

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US4783972A

公开(公告)日：1988-11-15

申请号：US114228

申请日：1987-10-29

Applicant: Lewis Tyree, Jr. ,  Martin M. Reynolds ,  Gary D. Lang

Inventor： Lewis Tyree, Jr. ,  Martin M. Reynolds ,  Gary D. Lang

IPC: F25D3/11 ,  F25D17/02

CPC classification number: F25D3/11 ,  F25D2317/0681

Abstract: 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.

Abstract translation: 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。