公开(公告)号：US5206479A

公开(公告)日：1993-04-27

申请号：US518954

申请日：1990-05-04

申请人： Zairani Zakaria ,  Edwin D. Neas ,  Dennis P. Manchester ,  Wyatt P. Hargett

发明人： Zairani Zakaria ,  Edwin D. Neas ,  Dennis P. Manchester ,  Wyatt P. Hargett

IPC分类号： A61L2/12 ,  A61N5/02 ,  B01J19/12 ,  H05B6/64 ,  H05B6/74 ,  H05B6/78 ,  H05B6/80

CPC分类号： H05B6/74 ,  B01J19/126 ,  H05B6/6408 ,  H05B6/806 ,  B01J2219/1209 ,  B01J2219/1218

摘要： A microwave heating system which is especially useful for rapidly, uniformly and positively sterlizing biological media, such as broths and gels used as incubation or growth media for bacteria, includes a source of microwave radiation, a microwave chamber, a container or a plurality of containers in the chamber, and a mixer for mixing the contents of the container or containers during heating. The mixer is at least partially external to the container and is capable of operating when the container is positively sealed to prevent contamination of the contents, and the mixer is preferably a combination of an external magnet and a mixing element which is at least in part of magnetic material and is moved by changes in the magnetic field set up by the magnet, as the container and contained mixing element are moved with respect to the magnet, as on an oscillating turntable. Other systems for mixing the material in the container are also within the invention, although they are not as satisfactory as that previously described, and such other systems include mechanical systems, such as solenoid activated cores or extensions thereof for pushing vertically against a turntable and thereby moving it out of its normal horizontal plane, cams for accomplishing the same purpose, devices for causing the containers to swing, in pendulum-like motion, as they are rotated, and ultrasonic devices. The apparatus may be used for various other heating operations and even for mixings, without heatings.

公开(公告)号：US5369034A

公开(公告)日：1994-11-29

申请号：US67292

申请日：1993-05-25

申请人： Wyatt P. Hargett ,  Sara E. Littau

发明人： Wyatt P. Hargett ,  Sara E. Littau

IPC分类号： B01J19/12 ,  B65D81/34 ,  G01N1/44 ,  H05B6/64 ,  G01N1/00 ,  G05D16/08

CPC分类号： H05B6/6408 ,  B01J19/126 ,  G01N1/44 ,  B01J2219/1209 ,  B01J2219/1215 ,  B01J2219/1218 ,  Y10T436/25125

摘要： A ventable container for materials to be heated (preferably digested) by microwave radiation includes a movable rupture diaphragm in a venting passageway in a closure or cover for such container. Such diaphragm is tightenable into place so that the container is sealed and in such sealed state is protected by the rupture diaphragm against pressures that could develop in the container that are higher than that for which it was designed. An important feature of the invention is that the rupture diaphragm is controllably movable, when desired, to open positions to vent the container during heating and afterward, and is resealable after venting. Because of the chemical reactivity of the reagents utilized in digestions an inner chemically resistant liner is desirably employed in conjunction with a physically stronger outer body, with the outer body giving the liner enough strength to withstand pressures developed during the heating. Also within the invention are processes for heating and digesting materials in the described containers with microwave radiation, microwave heating apparatuses including the invented containers, and lined containers wherein the liners are of improved sealing structures so that the containers are more tightly sealed when heated.

摘要翻译： 用于通过微波辐射加热（优选消化）的材料的可通风容器包括在用于这种容器的封闭件或盖中的通气通道中的可移动破裂膜片。 这种隔膜可以紧固到位，使得容器被密封，并且在这种密封状态下由破裂隔膜保护，抵抗在容器中可能发生的高于其设计的压力的压力。 本发明的一个重要特征在于，在需要的时候，破裂膜片可控制地移动到打开位置以便在加热和之后排出容器，并且在排气之后可重新密封。 由于在消化中使用的试剂的化学反应性，期望地与物理上更强的外部体一起使用内部耐化学性衬里，其中外部主体给予衬垫足够的强度以承受加热期间产生的压力。 本发明还涉及使用微波辐射加热和消化所述容器中的材料的方法，包括本发明的容器的微波加热装置和衬里的容器，其中衬垫具有改进的密封结构，使得容器在加热时更紧密地密封。

公开(公告)号：US5230865A

公开(公告)日：1993-07-27

申请号：US948134

申请日：1992-09-21

申请人： Wyatt P. Hargett ,  Sara E. Littau

发明人： Wyatt P. Hargett ,  Sara E. Littau

IPC分类号： B01J19/12 ,  B65D81/34 ,  G01N1/44 ,  H05B6/64

CPC分类号： H05B6/6408 ,  B01J19/126 ,  G01N1/44 ,  B01J2219/1209 ,  B01J2219/1215 ,  B01J2219/1218 ,  Y10T436/25125

摘要： A ventable container for materials to be heated (preferably digested) by microwave radiation includes a movable rupture diaphragm in a venting passageway in a closure or cover for such container. Such diaphragm is tightenable into place so that the container is sealed and in such sealed state is protected by the rupture diaphragm against pressures that could develop in the container that are higher than that for which it was designed. An important feature of the invention is that the rupture diaphragm is controllably movable, when desired, to open positions to vent the container during heating and afterward, and is resealable after such venting. Because of the chemical reactivity of the reagents utilized in digestions an inner chemically resistant liner is desirably employed in conjunction with a physically stronger outer body, with the outer body giving the liner enough strength to withstand pressures developed during the heating. Also within the invention are processes for heating and digesting materials in the described containers with microwave radiation, microwave heating apparatuses including the invented containers, and lined containers wherein the liners are of improved sealing structures so that the containers are more tightly sealed when heated.

摘要翻译： 用于通过微波辐射加热（优选消化）的材料的可通风容器包括在用于这种容器的封闭件或盖中的通气通道中的可移动破裂膜片。 这种隔膜可以紧固到位，使得容器被密封，并且在这种密封状态下由破裂隔膜保护，抵抗在容器中可能发生的高于其设计的压力的压力。 本发明的一个重要特征是，当需要时，破裂隔膜可控地移动到打开位置以在加热和之后排出容器，并且在这种排气之后可重新密封。 由于在消化中使用的试剂的化学反应性，期望地与物理上更强的外部体一起使用内部耐化学性衬里，其中外部主体给予衬垫足够的强度以承受加热期间产生的压力。 本发明还涉及使用微波辐射加热和消化所述容器中的材料的方法，包括本发明的容器的微波加热装置和衬里的容器，其中衬垫具有改进的密封结构，使得容器在加热时更紧密地密封。

公开(公告)号：US5520886A

公开(公告)日：1996-05-28

申请号：US183192

申请日：1994-01-14

申请人： Jonathan P. Bennett ,  Wyatt P. Hargett

发明人： Jonathan P. Bennett ,  Wyatt P. Hargett

IPC分类号： B01J3/04 ,  B01J19/12 ,  G01N1/44 ,  H05B6/64 ,  B01L3/00 ,  G01N25/00

CPC分类号： G01N1/44 ,  B01J19/126 ,  B01J3/048 ,  H05B6/6408 ,  B01J2219/1209 ,  B01J2219/1215 ,  Y10T428/1369

摘要： Sealable container assemblies include containers for materials which are to be microwave heated, such as in digesting or extracting operations, made of thermoplastic material, such as fluoropolymer, that is strengthened by reinforcing means that may be a fiber reinforced thermoplastic of high tensile strength, such as polyetherimide, with reinforcing continuous fibers in a matrix of such thermoplastic, which fibers are very preferably in the shape of a sleeve or sleeves and are of glass or other heat resistant and microwave transmissive material. The containers may be strengthened by incorporating the fiber reinforced thermoplastic in a wall or walls of the container or preferably by inserting the container into a reinforcement, which is a sleeve or collar of the reinforced thermoplastic. In both such constructions the reinforcing means protects the container against radial failure due to pressure that is generated by the microwave heating of the container contents. However, it has been found that in those cases wherein the internal pressure of the container rises even higher than that against which the reinforcement is protective, failure of the side wall and the reinforcement may be explosive, so the containers of this invention are of a structure that causes them to fail at an unreinforced location before the reinforcement, which failure is less explosive and less damaging to equipment employed and to any surroundings. Also described are the container construction, which preferably includes a central bottom depression and a skirt, and procedures for utilizing the containers in heatings of materials.

摘要翻译： 可密封的容器组件包括用于要被微波加热的材料的容器，例如在消化或提取操作中，由诸如含氟聚合物的热塑性材料制成的容器，其通过可以是具有高拉伸强度的纤维增强热塑性塑料加强 作为聚醚酰亚胺，在这种热塑性塑料基质中具有增强连续纤维，该纤维非常优选为套筒或套筒的形状，并且是玻璃或其它耐热和微波透射材料。 容器可以通过将纤维增强的热塑性塑料结合到容器的壁或壁中来进行加强，或者优选地通过将容器插入作为增强热塑性塑料的套筒或套环的加强件中。 在这两种这样的结构中，加强装置保​​护容器免受由于容器内容物的微波加热产生的压力的径向故障。 然而，已经发现，在容器的内部压力升高甚至高于加固件的内部压力的情况下，侧壁和加强件的故障可能是爆炸性的，因此本发明的容器是 结构使得它们在加固之前在未加强的位置失效，这种破坏对于所使用的设备和对周围环境的破坏性更小。 还描述了容器结构，其优选地包括中央底部凹陷和裙部，以及用于在材料加热中利用容器的程序。

公开(公告)号：US5318754A

公开(公告)日：1994-06-07

申请号：US5252

申请日：1993-01-15

申请人： Michael J. Collins ,  Wyatt P. Hargett

发明人： Michael J. Collins ,  Wyatt P. Hargett

IPC分类号： B01J19/12 ,  B01L7/00 ,  C03B5/08 ,  C03B37/15 ,  F27D1/00 ,  F27D5/00 ,  F27D99/00 ,  G01N1/44 ,  G01N31/12 ,  G01N33/04 ,  H05B6/64 ,  H05B6/68 ,  H05B6/80

CPC分类号： H05B6/6455 ,  B01J19/126 ,  B01L7/00 ,  C03B37/15 ,  C03B5/08 ,  F27D5/0068 ,  G01N1/44 ,  G01N31/12 ,  H05B6/64 ,  H05B6/66 ,  B01J2219/1218 ,  F27D1/0009 ,  F27D2099/0028 ,  F27M2003/11 ,  G01N33/04

摘要： An apparatus for use in analyzing materials for ash content includes a walled chamber which retains microwave radiation therein, a source of microwave radiation, such as a magnetron, for radiating onto contents of such chamber, and an ashing furnace in the chamber which includes a heat resistant wall of low thermal conductivity, which is transmissive of microwave radiation, and a microwave absorptive material which is capable of being heated by microwave radiation to an ashing temperature. The furnace includes a passageway through it for the entry into the furnace cavity of a gas, such as air, and for venting gas, such as combustion products, from the furnace cavity, and preferably also includes a removable trapezoidally shaped door in a front wall thereof, which, when the chamber door is open, is readily removable from the furnace by hand, without burning the operator's fingers, despite the high internal temperature in the furnace cavity. Air flows through the chamber and around the furnace, helping to cool the exterior, of the furnace walls. It is preferred that the operation of the furnace and the ashing temperature be controlled by a combination of a temperature sensor, preferably a thermocouple, and a control mechanism, which turns the magnetron on and off as the temperature in the furnace cavity falls below or rises above a desired set temperature, respectively.

摘要翻译： 用于分析灰分材料的装置包括：保留微波辐射的壁室，诸如磁控管的微波辐射源，用于辐射到这种室的内容物上，以及在室中的灰化炉，其包括热量 微波辐射传播的低导热性的耐热壁，以及能够通过微波辐射加热至灰化温度的微波吸收材料。 炉子包括通过它的通道，用于进入诸如空气的气体的炉腔中，并且用于从炉腔排出诸如燃烧产物的气体，并且优选地还包括在前壁中的可移除的梯形门 其中，当室门打开时，即使在炉腔中具有高的内部温度，也可以用手轻轻地从炉子中移除炉子，而不燃烧操作者的手指。 空气流过室和炉周围，有助于冷却炉壁的外部。 优选的是，通过温度传感器，优选热电偶和控制机构的组合来控制炉的操作和灰化温度，控制机构随着炉腔中的温度降低或升高而使磁控管打开和关闭 分别高于所需的设定温度。