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：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：US4566804A

公开(公告)日：1986-01-28

申请号：US450198

申请日：1982-12-16

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

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

IPC分类号： G01N5/04 ,  G01N22/04 ,  H05B6/80 ,  G01N25/00 ,  G01G23/18

CPC分类号： G01N22/04 ,  H05B6/80 ,  G01N5/045 ,  H05B2206/046

摘要： An apparatus for controllably heating material directly and indirectly by microwave radiation comprises a chamber in which the material to be heated (often to dryness, as for analysis) is placed, a source of microwave radiation for radiating into materials in such chamber for controllably heating such a material, and a support for such material, which support comprises a matrix of microwave radiation-transmissive material and a particulate microwave absorptive material dispersed in such matric material, which microwave absorptive material has a Curie temperature, above which it becomes microwave transmissive, so as thereby to prevent excessive heating of the support and the material thereon which is to be controllably heated, and which matrix material is stable and form-retaining at the Curie temperature of the dispersed material. Preferably the support will be of a silicone rubber or a polyfluoroalkylene polymer matrix, such as polytetrafluoroethylene, and the dispersed material therein will be a ferrite, garnet or mixture thereof. The apparatus may include a turntable for carrying a plurality of supports or it may include an automatic electronic balance, in both of which embodiments of the invention computerized controls and/or readout means may be present. Also within the invention are the described support, and processes for effecting such heating and/or drying, in one of which processes a particulate diluent or dispersant for the sample being treated is employed to prevent overheating thereof.

摘要翻译： 用于通过微波辐射直接和间接地可控地加热材料的装置包括其中放置待加热材料（通常为干燥，用于分析）的室，用于辐射到该室中的材料中的微波辐射源，用于可控地加热 一种材料和这种材料的支撑件，其支撑包括微波辐射透射材料的基体和分散在这种基质材料中的颗粒状微波吸收材料，该微波吸收材料具有居里温度，在此之上它变成微波可透射的，因此 从而防止支撑件及其上可控制加热的材料的过度加热，并且哪种基体材料在分散材料的居里温度下是稳定的并形成保持的。 优选地，载体将是硅橡胶或多氟亚烷基聚合物基质如聚四氟乙烯，并且其中的分散材料将是铁氧体，石榴石或其混合物。 该装置可以包括用于承载多个支撑件的转盘，或者它可以包括自动电子天平，在本发明的两个实施例中，可以存在计算机控制和/或读出装置。 在本发明中还包括所描述的支撑物，以及用于进行这种加热和/或干燥的方法，其中一种方法是使用待处理样品的颗粒状稀释剂或分散剂来防止其过热。

公开(公告)号：US07816633B2

公开(公告)日：2010-10-19

申请号：US11853102

申请日：2007-09-11

申请人： Wyatt P. Hargett, Jr. ,  James E. Thomas

发明人： Wyatt P. Hargett, Jr. ,  James E. Thomas

IPC分类号： H05B6/64 ,  B01J19/08

CPC分类号： H05B6/806 ,  B01J19/0046 ,  B01J19/126 ,  B01J2219/00162 ,  B01J2219/002 ,  B01J2219/00231 ,  B01J2219/0024 ,  B01J2219/00283 ,  B01J2219/0034 ,  B01J2219/00353 ,  B01J2219/00477 ,  B01J2219/00495 ,  B01J2219/00601 ,  B01J2219/00689 ,  B01J2219/00691 ,  B01J2219/0869 ,  B01J2219/1215 ,  B01J2219/1239 ,  B01J2219/1275 ,  C40B60/14 ,  H05B6/6408

摘要： A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out. The method includes the steps of opening a pressure-resistant valve on a microwave-transparent pressure-resistant vessel to define a unpressurized pathway through the valve into the vessel, inserting a tube through the pathway in the valve and into the vessel, transferring at least one composition into the vessel through the tube, removing the tube from the vessel and from the pathway in the valve, closing the valve to seal the vessel against pressure release, and exposing the vessel and its contents to microwave radiation. The instrument includes a source of microwave radiation, a cavity in microwave communication with the source, an attenuator that forms at least a portion of the cavity, a pressure-resistant microwave-transparent reaction vessel having portions in the cavity and portions in the attenuator, a pressure-resistant valve on the mouth of the vessel, a reciprocating tube for passing through the valve and into the vessel when the valve is open, and means for mechanically inserting and retracting the tube through the valve and into the vessel when the vessel is in the cavity and the attenuator.

摘要翻译： 公开了一种方法和相关联的仪器，用于增加可以进行可能产生高压的一系列微波辅助化学反应的顺序速率。 该方法包括以下步骤：在微波透明耐压容器上打开耐压阀，以限定通过阀进入容器的非加压路径，将管穿过阀中的通道插入容器中，至少转移 一个组合物通过管子进入容器，从容器中取出管子并从阀门中的通道中取出管子，关闭阀门以密封容器以抵抗压力释放，并将容器及其内容物暴露于微波辐射。 仪器包括微波辐射源，与源极微波连通的空腔，形成空腔的至少一部分的衰减器，具有空腔中的部分和衰减器中的部分的耐压微波透明反应容器， 容器口上的耐压阀，当阀打开时通过阀门并进入容器的往复式管，以及用于当管是容器时通过阀机械地插入和收回管并进入容器的装置 在腔和衰减器中。

公开(公告)号：US07307248B2

公开(公告)日：2007-12-11

申请号：US10707376

申请日：2003-12-09

申请人： Wyatt P. Hargett, Jr. ,  James E. Thomas

发明人： Wyatt P. Hargett, Jr. ,  James E. Thomas

IPC分类号： H05B6/64 ,  B01J19/08

CPC分类号： H05B6/806 ,  B01J19/0046 ,  B01J19/126 ,  B01J2219/00162 ,  B01J2219/002 ,  B01J2219/00231 ,  B01J2219/0024 ,  B01J2219/00283 ,  B01J2219/0034 ,  B01J2219/00353 ,  B01J2219/00477 ,  B01J2219/00495 ,  B01J2219/00601 ,  B01J2219/00689 ,  B01J2219/00691 ,  B01J2219/0869 ,  B01J2219/1215 ,  B01J2219/1239 ,  B01J2219/1275 ,  C40B60/14 ,  H05B6/6408

摘要： A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out.

摘要翻译： 公开了一种方法和相关联的仪器，用于增加可以进行可能产生高压的一系列微波辅助化学反应的顺序速率。

公开(公告)号：US06462321B2

公开(公告)日：2002-10-08

申请号：US09950266

申请日：2001-09-10

申请人： Robert N. Revesz ,  James E. Thomas ,  Wyatt P. Hargett, Jr.

发明人： Robert N. Revesz ,  James E. Thomas ,  Wyatt P. Hargett, Jr.

IPC分类号： H05B680

CPC分类号： G01N22/00

摘要： A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.

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。

公开(公告)号：US4672996A

公开(公告)日：1987-06-16

申请号：US868171

申请日：1986-05-22

申请人： Terry S. Floyd ,  Wyatt P. Hargett, Jr.

发明人： Terry S. Floyd ,  Wyatt P. Hargett, Jr.

IPC分类号： B65D81/34 ,  A23L3/00 ,  A23L3/10 ,  B01J3/00 ,  B01J19/12 ,  B65B55/04 ,  B65B55/12 ,  B65D83/14 ,  F16K15/14 ,  F16K17/02 ,  F16K17/04 ,  F16K17/36 ,  H05B6/64 ,  H05B6/80

CPC分类号： H05B6/6408 ,  A23L3/10 ,  B01J19/126 ,  B01J3/002 ,  F16K17/02 ,  B01J2219/1209 ,  B01J2219/1215 ,  B01J2219/1218 ,  Y10T137/7737 ,  Y10T137/7876 ,  Y10T137/7895

摘要： The present invention provides an improved valve. This valve opens and closes in response to a change in the physical environment of the valve. This valve is particularly suited as a relief valve in a microwave system-based, closed vessel digestion procedure. This valve includes a pressure-deformable, resilient wall member having a fluid vent port, and an obstructing member that cooperates with the wall member to open and close the valve. Also provided is a lidded vessel employing this improved valve, an apparatus that includes a microwave system and this lidded vessel, and methods using this improved valve.

摘要翻译： 本发明提供一种改进的阀。 该阀响应于阀的物理环境的变化而打开和关闭。 该阀特别适用于基于微波系统的密闭容器消解程序中的安全阀。 该阀包括具有流体通气口的可压力变形的弹性壁构件和与壁构件协作以打开和关闭阀的阻塞构件。 还提供了一种采用这种改进阀的盖式容器，包括微波系统和该盖盖容器的装置，以及使用该改进阀的方法。

公开(公告)号：US4565669A

公开(公告)日：1986-01-21

申请号：US487307

申请日：1983-04-21

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

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

IPC分类号： G01N1/44 ,  G01N31/12 ,  G01N33/04 ,  H05B6/68 ,  H05B6/64

CPC分类号： H05B6/68 ,  G01N1/44 ,  G01N31/12 ,  G01N33/04 ,  Y02B40/143

摘要： An apparatus for ashing materials which comprises a chamber, a source of microwave radiation for direction onto contents of the chamber, and in the chamber a support, such as a fused quartz pad or crucible, for the material to be ashed, and an ashing means of a stable microwave absorptive material, capable of being heated to high temperature by microwave radiation, such as a flat block of silicon carbide or a plurality of such blocks with openings therein to accommodate the crucible. The ashing means is in contact with the support for the material to be ashed and is capable of heating such support and such material to an ashing temperature. When a fused quartz fiber pad, preferably of the non-woven cloth type, is employed on top of and in contact with the ashing means of microwave absorptive material, as a support for the material to be ashed, it is preferred to cover such material with another such pad, which inhibits loss of the ash due to its being carried out of the chamber, as by an exhaust fan, while yet permitting the release of gases generated during the ashing process. Also disclosed are processes for ashing materials and for analyzing such materials for ash content, which processes may be practiced with the aid of the described apparatus.

摘要翻译： 一种用于灰化材料的设备，其包括腔室，用于朝向腔室内容物的方向的微波辐射源，以及在腔室中用于待灰化的材料的诸如熔融石英垫或坩埚的支撑件，以及灰化装置 的稳定的微波吸收材料，其能够通过微波辐射被加热到高温，例如碳化硅的平坦块或多个这样的块，其中具有开口以容纳坩埚。 灰化装置与要被灰化的材料的支撑件接触，并且能够将这种支撑件和这种材料加热到灰化温度。 当优选采用非织造布类型的熔融石英纤维垫作为微波吸收材料的灰化装置的顶部并与之接触时，作为待灰化材料的载体，优选覆盖这种材料 具有另一个这样的垫，其抑制了由于其被排出风扇而被引入室内的灰分的损失，同时允许释放在灰化过程中产生的气体。 还公开了用于灰化材料和用于分析灰分含量的这种材料的方法，该方法可以借助所描述的装置来实施。