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1. 发明授权

US4640344A Self-cleaning, rotary heat exchanger 失效
标题翻译：自清洁，旋转式热交换器
公开(公告)号：US4640344A
公开(公告)日：1987-02-03
申请号：US836064
申请日：1986-03-04
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： F28D15/02 , F28F13/02 , F28G13/00 , F28D5/00
CPC分类号： F28F13/02 , F28D15/0208 , F28D15/0275 , F28G13/00 , F28F2200/005 , Y10S165/921
摘要： A rotary, Perkins tube heat exchanger for processing hot contaminated gas flows emanating from appliances such as laundry driers, grain driers and the like. The case of the heat exchanger is located relative to the rotor so as to lie in the gas flow boundary layer established by the latter. The case is provided with a boundary layer purge port in the hot gas chamber. An airfoil extends inwardly from the case into the gas flow boundary layer. It causes increased local turbulance in the boundary layer gas. It also diverts a predetermined proportion of the boundary layer gas and its burden of contamination products out through the purge port. The boundary layer airflow cleans both the interior of the case and the rotor, even through the rotor is characterized by the presence of a multiplicity of small openings. The device thus is rendered self-cleaning and may be operated for extended periods of time without buildup of contaminants within the heat exchanger case.
摘要翻译：用于处理从诸如洗衣干燥机，谷物干燥器等的电器产生的热污染气体的旋转珀金斯管式热交换器。热交换器的情况相对于转子定位，以便位于由后者建立的气流边界层中。在热气室中设有边界层吹扫口。机翼从壳体向内延伸到气流边界层中。这导致边界层气体中的局部湍流增加。它还通过吹扫口转移预定比例的边界层气体及其污染物的负担。边界层气流清洁壳体和转子的内部，即使通过转子，其特征在于存在多个小开口。因此，该装置被自动清洁并且可以长时间地操作而不会在热交换器壳体内积聚污染物。

2. 发明授权

US4527417A Apparatus useful for rapidly determining the molecular weight of a flowing gaseous material 失效
标题翻译：用于快速测定流动气态物质的分子量的装置
公开(公告)号：US4527417A
公开(公告)日：1985-07-09
申请号：US589020
申请日：1984-03-13
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： G01N25/48 , G01N33/00 , G01N25/00
CPC分类号： G01N33/0027 , G01N25/4873
摘要： The molecular weight of a pressurized flowing gas is determined by means of a vortex tube. The temperatures of the inlet gas to the tube and of its outlet hot and cold gas fractions are sensed by e.m.f.-producing temperature sensing means; the resulting e.m.f.'s are fed to a divider circuit which amplifies them, forms differential e.m.f.'s and a ratio of the differential e.m.f.'s, and converts the ratio to the molecular weight of the gas.
摘要翻译：加压流动气体的分子量通过涡流管确定。通过产生温度的感测装置感测到管及其出口热和冷气体馏分的入口气体的温度; 所得到的e.m.f.被馈送到放大它们的分频器电路，形成差分e.m.f.s和差分e.m.f.的比率，并将该比率转换成气体的分子量。

3. 发明授权

US4012770A Cooling a heat-producing electrical or electronic component 失效
标题翻译：冷却发热的电气或电子部件
公开(公告)号：US4012770A
公开(公告)日：1977-03-15
申请号：US293005
申请日：1972-09-28
申请人： Milton F. Pravda , Walter B. Bienert
发明人： Milton F. Pravda , Walter B. Bienert
IPC分类号： H01L23/367 , H01L23/40 , H01L23/427 , H01L23/42 , F28D15/00
CPC分类号： H01L23/4006 , H01L23/367 , H01L23/427 , H01L2023/4025 , H01L2023/4056 , H01L2924/0002
摘要： Vapor chamber-containing apparatus is provided for cooling heat-producing electrical and electronic components wherein the heat is absorbed by a vaporizable agent.
摘要翻译：提供含蒸气室的设备用于冷却发热的电气和电子部件，其中热被可蒸发的试剂吸收。

4. 发明授权

US5303565A Rotary absorption heat pump of improved performance 失效
标题翻译：旋转吸收式热泵性能提升
公开(公告)号：US5303565A
公开(公告)日：1994-04-19
申请号：US29619
申请日：1993-03-11
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： F25B15/00 , F25B3/00
CPC分类号： F25B15/004 , Y02B30/62
摘要： A rotary absorption heat pump assembly. The assembly comprises a generator (2), condenser (3), evaporator (4), absorbent cooler (5), and absorber (1), all operatively associated to function as components of an absorption-type heat pump of high efficiency and superior operating characteristics. The heat pump is characterized by the presence of a tapered cylindrical absorber (1) which receives and processes, in the form of a very thin peripheral film ("d"), a predetermined amount of absorbent solution. The absorber (1) is arranged in abutting end-to-end relationship to the generator (2), with which it communicates. The condenser (3) and evaporator (4) are arranged end-to-end outside of the absorber (1) and absorbent cooler (5), concentrically therewith and radially spaced therefrom.
摘要翻译：旋转吸收式热泵组件。组件包括发电机（2），冷凝器（3），蒸发器（4），吸收性冷却器（5）和吸收器（1），全部可操作地相关联，用作高效率和优越的吸收式热泵的组件经营特点热泵的特征在于存在锥形圆柱形吸收器（1），其以非常薄的周边膜（“d”）的形式接收和处理预定量的吸收剂溶液。吸收器（1）以与发生器（2）邻接的端对端关系布置，与其连通。冷凝器（3）和蒸发器（4）以吸收器（1）和吸收性冷却器（5）的端对端设置，与其同心并且与其径向间隔开。

5. 发明授权

US4538447A Method and apparatus useful for rapidly determining the molecular weight of a flowing gaseous material 失效
标题翻译：用于快速测定流动气态物质的分子量的方法和装置
公开(公告)号：US4538447A
公开(公告)日：1985-09-03
申请号：US589009
申请日：1984-03-13
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： G01N33/00 , G01N31/00
CPC分类号： G01N33/0004
摘要： The molecular weight of a pressurized flowing gas is determined by means of a vortex tube. The temperatures of the inlet gas to the tube and of its outlet hot and cold gas fractions are sensed by electromotive force-producing temperature-sensing means; the resulting e.m.f.'s are employed to ascertain differential e.m.f.'s and then to form a ratio of differential e.m.f.'s. The ratio is then converted to the molecular weight of the gas, either by means of a pre-established ratio-molecular weight relationship or converter, such as a graph of variance or a mathematical equation, or, preferably, by means of an electric circuit in which the differential e.m.f.'s, the ratio, and the molecular weight are ascertained instantaneously and the molecular weight is simply read off a meter.
摘要翻译：加压流动气体的分子量通过涡流管确定。通过产生电动势的温度感测装置感测到管的入口气体及其出口热和冷气体馏分的温度; 所得到的e.m.f.被用于确定差异e.m.f.然后形成差异e.m.f.的比率。然后通过预先建立的比例 - 分子量关系或转化器（如方差图或数学方程式）或优选通过电路将该比率转化为气体的分子量其中确定差分emf，比率和分子量，并且简单地从仪表读取分子量。

6. 发明授权

US5846299A Recovering water soluble, volatile, organic compounds from bakery and other plant emissions 失效
标题翻译：从面包店和其他植物排放物中回收水溶性，挥发性有机化合物
公开(公告)号：US5846299A
公开(公告)日：1998-12-08
申请号：US748247
申请日：1996-11-12
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： B01D53/34 , B01D1/14 , B01D3/34 , B01D5/00 , B01D53/14 , B01D53/18 , B01D53/72 , B01D53/77 , B01D47/06
CPC分类号： B01D5/0039 , B01D1/14 , B01D3/346 , B01D53/1418 , B01D53/1487 , B01D2257/704
摘要： Recovery of ethanol from the exhaust stacks of a bread-baking oven is achieved by passing the stack emissions through an adiabatic humidifier where the emissions are humidified to near saturation. The unevaporated water content of the humidifier is collected for separation of the ethanol content. The humidified emissions are passed from the humidifier to the vaporization chamber of a heat exchanger where the gas content of the humidified emissions is separated from the moisture content thereof, and the moisture content is collected for recovery of the ethanol content.
摘要翻译：通过将堆排放物通过绝热加湿器，其中排放物被加湿至接近饱和，从而从面包烘烤炉的废料堆中回收乙醇。收集加湿器的未蒸发水含量以分离乙醇含量。加湿排放物从加湿器通到热交换器的蒸发室，其中加湿排放物的气体含量与其含水量分离，并收集含水量以回收乙醇含量。

7. 发明授权

US4050509A Down-pumping heat pipes 失效
标题翻译：下泵热管
公开(公告)号：US4050509A
公开(公告)日：1977-09-27
申请号：US736548
申请日：1976-10-28
申请人： Walter B. Bienert , Milton F. Pravda
发明人： Walter B. Bienert , Milton F. Pravda
IPC分类号： F28D15/02 , F28D15/00
CPC分类号： F28D15/0266 , F24J3/086 , F28F2200/005 , Y02E10/16
摘要： Down-pumping heat pipes are provided to augment natural earth heat when used in association with conventional or up-pumping heat pipes for the purpose of maintaining an area such as a roadway free of ice and snow.
摘要翻译：提供下抽式热管，以便在与常规或上抽式热管相关联使用时增加天然地热，以保持诸如不含冰雪的道路的区域。

8. 发明授权

US06814134B1 Compact electronic cabinet cooler 失效
标题翻译：紧凑型电子柜冷却器
公开(公告)号：US06814134B1
公开(公告)日：2004-11-09
申请号：US09705456
申请日：2000-11-02
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： F28D1102
CPC分类号： H05K7/20609 , F28D15/0208 , F28D15/0275 , F28D15/046
摘要： A compact cabinet cooler includes a housing made of two basket sections secured to a cabinet with one basket section extending into the cabinet and the other section extending outward of the cabinet. The housing encloses a plurality of heat transport tubes extending through a central plate and spaced apart in an annular array. The central plate is mounted on the rotor of an electric motor the stator of which is secured to a shaft anchored at its ends to the housing. Rotation of the motor rotor causes rotation of the central plate and the array of heat transport tubes. The tubes mount a multiplicity of spaced apart thin annular fins of heat conductive material and the tubes contain a heat transfer liquid for moving heat from the evaporator section of the housing to the condenser section of the housing. When the heat transport tubes are Perkins tubes, the heat transfer liquid fills the tubes about half full; if they are heat pipes a layer of sintered porous heat conductive material is bonded to the inner surface of the tubes and the heat transfer liquid fills only the pores in the sintered material.
摘要翻译：紧凑型橱柜冷却器包括由两个筐部分制成的壳体，两个筐部分固定到机柜，一个筐部分延伸到机柜中，另一个部分延伸到机柜外部。壳体包围多个传热管，其延伸穿过中心板并以环形阵列隔开。中心板安装在电动机的转子上，电机的定子固定在其端部固定在壳体上的轴上。电动机转子的旋转引起中心板和传热管阵列的旋转。管安装多个间隔开的导热材料的薄环形翅片，并且管包含用于将热量从壳体的蒸发器部分移动到壳体的冷凝器部分的传热液体。当热传输管是珀金斯管时，传热液体将管充满约半满; 如果它们是热管，则将一层烧结的多孔导热材料结合到管的内表面，并且传热液体仅填充烧结材料中的孔。

9. 发明授权

US06178767B2 Compact rotary evaporative cooler 失效
标题翻译：紧凑型旋转蒸发冷却器
公开(公告)号：US06178767B2
公开(公告)日：2001-01-30
申请号：US09369485
申请日：1999-08-05
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： F28D500
CPC分类号： F28D15/0208 , F28D5/02 , F28D15/0275 , F28D15/04
摘要： The compact rotary evaporative cooler of this invention includes a case containing a powered rotor mounting a partition that divides the case longitudinally into a wetted chamber and a nonwetted chamber. An annular array of elongated Perkins tubes is supported for rotation with the rotor and each Perkins tube extends through the partition, with the evaporation end section extending into the nonwetted chamber and the condensing end section extending into the wetted chamber. Each Perkins tube mounts a plurality of closely spaced heat conductive fins along its length, and a layer of porous metal is bonded to the entire inner surface of the evaporation section of the tube. A first inlet port introduces hot, dry outside air into the wetted chamber and a first outlet port vents the cooled but humidified air from the wetted chamber to the atmosphere or to a space to be conditioned. A second inlet port introduces atmospheric or compartment space air into the nonwetted chamber and a second outlet port vents cooled air from the nonwetted chamber for controlled mixing with the vented air from the first outlet port and delivery to a space to be conditioned. A water reservoir and pump supply water mist into the wetted chamber for wetting the finned heat transfer surfaces. A bootstrap mode may be provided by communicating outlet air duct 64 with inlet air duct 58 and outlet air duct 60 with the space 56. A controller valve 80 in inlet air duct 58 allows outside air to be mixed with air in duct 64.
摘要翻译：本发明的紧凑型旋转式蒸发冷却器包括一个壳体，该壳体装有一个将箱体纵向分成湿润室和非湿润室的隔板，支撑的细长的珀金斯管的环形阵列被支撑以与转子一起旋转，并且每个珀金斯管延伸穿过隔板，蒸发端部延伸到非湿润室中，并且冷凝端部延伸到浸湿室中。每个珀金斯管沿其长度安装多个紧密间隔的导热翅片，并且多孔金属层结合到管的蒸发部分的整个内表面。第一入口端口将热的，干燥的外部空气引入到湿润室中，并且第一出口将冷却但是被加湿的空气从湿润室排放到大气或被调节的空间。第二入口端口将大气或隔室空间的空气引入非湿润室中，第二出口从非湿润室排出冷却的空气，用于与来自第一出口的排出的空气进行控制混合并输送到要调节的空间。储水器和泵将水雾送入润湿室，用于润湿翅片传热表面。可以通过将出口空气管道64与具有空间56的入口空气管道58和出口空气管道60连通来提供自举模式。入口空气管道58中的控制阀80允许外部空气与管道64中的空气混合。

10. 发明授权

US5945031A Freeze resistant, Perkins tube type heat exchanger 失效
标题翻译：防冻，珀金斯管式换热器
公开(公告)号：US5945031A
公开(公告)日：1999-08-31
申请号：US83897
申请日：1998-05-22
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： C09K5/20 , C09K5/00
CPC分类号： C09K5/20
摘要： A freeze resistant aqueous coolant solution for use in Perkins tube type heat exchangers is formed of one or more metal salts selected from the alkali metals of Group IA and the alkaline earth metals of Group IIA of the Periodic Table. Depending upon the composition of the metal tubes of the heat exchanger, the concentration of the metal salt ranges from about 5% to about 10% by weight of the solution and the pH of the solution ranges between 7.3 and 11.5.
摘要翻译：用于珀金斯管型热交换器的抗冻水性冷却剂溶液由选自IA族碱金属和元素周期表IIA族碱土金属的一种或多种金属盐形成。取决于热交换器的金属管的组成，金属盐的浓度范围为溶液重量的约5％至约10％，溶液的pH范围为7.3至11.5。

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