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公开(公告)号：US3886765A
公开(公告)日：1975-06-03
申请号：US49288574
申请日：1974-07-29
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
CPC分类号： F04C28/14 , F01C1/3446 , F01C21/06 , F01C21/106 , F05C2225/04 , F25B9/004
摘要： A compressor-expander for use in air conditioning which includes a housing having a chamber of oval profile divided into a compression side and an expansion side and containing a cylindrical rotor having a plurality of outwardly biased vanes forming compartments which progressively decrease and then increase in volume as the rotor rotates. The housing has compression side inlet and outlet ports and expansion side inlet and outlet ports, with the heat exchanger being connected between the compression side outlet port and the expansion side inlet port so that an incoming charge of air is first compressed, flows at constant pressure through the heat exchanger where the heat of compression is removed and then expands in the expansion side to produce a sharp drop in temperature for discharge in the cold state. To improve thermal efficiency, a flexible liner of thin cross section covers the wall of the chamber, a layer of insulation being interposed under the lining to inhibit flow of heat from the compression side to the expansion side. Means are provided for peripherally shifting the liner, if desired, to change the phase of the port positions. In one embodiment, the liner is in the form of a continuous strip supported upon insulated pedestals formed in the wall of the chamber and with diametrically opposed means being provided for applying peripheral shifting movement in opposite directions. In another embodiment, the liner has ends terminating in interdigitated fingers having a limited amount of endwise clearance so that when traction is applied to one of the ends of the liner for adjustment purposes, the effect is to reduce the diametrical dimension of the liner and thus unseat it from the wall of the chamber. When bottoming occurs at the fingers, the liner is bodily shifted to the new position. In a final aspect of the invention, the liner is in the form of a plurality of strips each of which carries a portion of the port openings and with the strips being individually shiftable to vary the relative positions of the ports.
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公开(公告)号：US3886763A
公开(公告)日：1975-06-03
申请号：US44583974
申请日：1974-02-26
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
CPC分类号： F25B9/004 , F24F5/0085
摘要： A refrigeration system employing a rotary unitary compressorexpander for use with a pressurized fluid source and which is powered by the fluid which is being refrigerated. The unitary compressor-expander is formed of a stator having a chamber of oval cross section occupied by a rotor fitted with radially slidable vanes, with the tips of the vanes sealingly engaging the wall of the chamber. The sides of the ''''oval,'''' which define compressor and expander portions, each have respective inlet and outlet openings. The inlet of the compressor portion is connected to the source of pressurized fluid and the outlet of the expander portion is vented to the cooled space which is at a lower, ambient pressure. For coupling together the outlet of the compressor and the inlet of the expander, a heat exchanger is provided which dissipates the heat of compression with substantially no loss in pressure. The two portions of the compressor-expander are made non-symmetrical so that the differential change in volume during compression is less than the differential change in volume during expansion with the result that the rotor derives its rotative power solely from the pressurized fluid being cooled. Several ways of achieving the desired non-symmetry are disclosed including changing the angle which separates the inlet and outlet ports and making the oval chamber non-symmetrical with respect to the rotor.
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公开(公告)号：US3904327A
公开(公告)日：1975-09-09
申请号：US40096573
申请日：1973-09-26
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C , EDWARDS CLAUDE
CPC分类号： F01C21/0836 , F01C1/3446
摘要： A rotary unitary compressor-expander for use as a refrigeration device. The unit includes a stator defining a chamber having an oval cross-section and a rotor mounted within the chamber. The rotor contains a plurality of radial vane slots into each of which is inserted a vane which is radially slidable within its slot. Each vane includes, at either edge, a vane pin or stubshaft on which is rotatably mounted a vane roller. Oval cam tracks are provided at the ends of the stator chamber for engaging the vane rollers. One or more continuous spring bands are contained within the rotor and produce on the vanes an outwardly biasing force which urges the vane rollers into continuous contact with the cam tracks. The cam tracks are so symmectrically sized and positioned with respect to the stator chamber that with the vane rollers thus maintained in contact with the cam tracks, the vane tips are maintained in ''''clearance'''' sealing engagement with the wall of the stator chamber.
摘要翻译： 用作制冷装置的旋转式整体式压缩机 - 膨胀机。 该单元包括限定具有椭圆形横截面的室的定子和安装在室内的转子。 转子包括多个径向叶片槽，每个径向叶片槽中插入有可在其槽内径向滑动的叶片。 每个叶片在任一边缘处包括叶片销或短轴，其上可旋转地安装叶片辊。 椭圆形凸轮轨道设置在定子室的端部，用于接合叶片辊。 一个或多个连续的弹簧带包含在转子内，并在叶片上产生向外的偏压力，其推动叶片辊与凸轮轨道持续接触。 凸轮轨道相对于定子室是如此规则尺寸和定位，其中叶片辊保持与凸轮轨道接触，叶片尖端与定子室的壁保持“间隙”密封接合。
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公开(公告)号：US3913351A
公开(公告)日：1975-10-21
申请号：US46584174
申请日：1974-05-01
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
CPC分类号： F04C29/0007 , F04C29/042 , F24F3/147 , F24F5/0085 , F25B9/004
摘要： An air conditioning unit having a driven rotor with a plurality of vanes and defining a compressor portion and an expander portion, each having inlet and outlet ports, with a first heat exchanger connected between the compressor outlet port and the expander inlet port. A non-condensing gas such as air is fed into the compressor inlet port, compressed, cooled by the heat exchanger, and expanded back to substantially its initial pressure for discharge in the cold state at the expander outlet port, a non-condensing gas being defined as any gas which does not condense at the pressures and temperatures encountered in the unit. In accordance with the main feature of the present invention, means are provided for causing the non-condensing gas, as it enters the inlet port of the compressor, to be substantially saturated with a condensible additive fluid, having a high heat of vaporization and which condenses within the range of temperature achieved in the expander thereby to release heat of vaporization in the expander resulting in an increase in the work of expansion to reduce the net work required to drive the rotor. In one embodiment of the invention the system is open and air is used as gas, with water as the additive. In such embodiment the cold air is directly to the cooled space. In a second embodiment a second heat exchanger is connected between the expander outlet port and the compressor inlet port to form a closed loop sealed against escape of gas. When the system is closed, the gas and additive fluid may take many different forms, and a lubricant may be included to lubricate the vanes of the rotor.
摘要翻译： 一种具有多个叶片的从动转子和限定压缩机部分和膨胀器部分的空调单元，每个叶轮具有入口和出口，第一热交换器连接在压缩机出口和膨胀机入口之间。 将非冷凝气体例如空气送入压缩机入口，由热交换器压缩，冷却，并在膨胀器出口处以冷态膨胀回到基本上其初始压力以进行排放，非冷凝气体为 定义为在该单元中遇到的压力和温度下不会冷凝的任何气体。 根据本发明的主要特征，提供了用于使非冷凝气体进入压缩机入口的装置基本上被具有高蒸发热的可冷凝添加剂流体基本饱和，并且其中 在膨胀器内实现的温度范围内冷凝，从而释放膨胀机中的汽化热，导致膨胀工作的增加，以减少驱动转子所需的净功。 在本发明的一个实施方案中，系统是开放的，空气用作气体，以水为添加剂。 在这种实施例中，冷空气直接到冷却空间。 在第二实施例中，第二热交换器连接在膨胀器出口和压缩机入口之间，以形成密封以防止气体逸出的闭环。 当系统关闭时，气体和添加剂流体可以采取许多不同的形式，并且可以包括润滑剂以润滑转子的叶片。
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5.发明授权
公开(公告)号：US3905204A
公开(公告)日：1975-09-16
申请号：US46075574
申请日：1974-04-15
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
CPC分类号： F04C29/12 , F25B9/004 , Y10S181/403
摘要： A compressor-expander for use in air conditioning having a compressor side and an expansion side with a vane-type rotor of the positive displacement type, each side having inlet and outlet ports and connected with an associated heat exchanger so that a charge of air drawn into the compressor side is compressed between adjacent vanes, cooled to remove heat of compression, and then expanded between adjacent vanes for discharge in the cold state. The compressor inlet port and expander outlet port are so positioned that the volume of an exiting charge of air is less than the volume of an entering charge of air in predetermined ratio so that air is discharged at nominally ambient pressure. At least one auxiliary equalizer port is provided in the frame of the device spaced slightly upstream of the expansion side outlet port and communicating with a region of ambient pressure so that, as an exiting charge of air approaches the outlet port, air may flow through the equalizer port with the result that the initial pressure of the exiting charge of air tends to be more nearly equalized with respect to the pressure existing at the expansion side outlet port, thereby to minimize explosive puffing of air and its attendant noise upon traverse of the vanes past the expansion side outlet port. In one embodiment of the invention the equalizer port occupies a distributed locus for spreading the equalization function over a greater angle of rotor rotation. In such event the equalizer port may consist of a diagonally arranged series of openings. In another embodiment of the invention a plurality of equalizer ports are coupled to ambient air through a conduit having an interposed muffler.
摘要翻译： 一种用于空调的压缩机 - 膨胀机，其具有压缩机侧和具有正排量型叶片式转子的膨胀侧，每侧具有入口和出口并与相关联的热交换器连接，使得空气抽吸 进入压缩机侧的压缩机在相邻叶片之间被压缩，冷却以除去压缩热，然后在相邻叶片之间膨胀，以在冷态下排出。 压缩机入口和膨胀器出口被定位成使得空气的排出量的体积小于预定比例的进入空气的体积，使得空气在标称环境压力下排出。 至少一个辅助均衡器端口设置在该装置的框架中，其间隔开在膨胀侧出口端口的稍微上游并与环境压力区域连通，使得当空气的排出物接近出口时，空气可流过 结果是，出口充气的初始压力相对于存在于膨胀侧出口处的压力趋于几乎相等，从而最小化空气的爆炸性膨胀及其在叶片横穿时的伴随噪声 经过扩口侧出口。 在本发明的一个实施例中，均衡器端口占据分布式轨迹，用于在更大的转子角度上扩展均衡功能。 在这种情况下，均衡器端口可以由对角排列的一系列开口组成。 在本发明的另一个实施例中，多个均衡器端口通过具有中间消声器的管道耦合到环境空气。
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公开(公告)号：US3886764A
公开(公告)日：1975-06-03
申请号：US49260874
申请日：1974-07-29
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
摘要： A compressor-expander for use in air conditioning which includes a rotor rotating in a chamber of oval cross section having a compression side and an expansion side, each with inlet and outlet ports. Hinged to the periphery of the rotor are a plurality of axially extending vanes which are biased outwardly into engagement with the wall of the chamber to form compartments of varying volume. Each vane is equipped, along its outer edge, with a sealing member having rollers which support the member at a desired close running clearance with respect to the wall of the chamber. The sealing members have a curved profile which matches the curve of the supporting rollers so that the same running clearance is maintained in spite of the changes in the angling of the vane which occur during the rotative cycle. The rotor is formed with longitudinal grooves for receiving the sealing members and with adjacent recesses for receiving the rollers for minimizing the residual volume between adjacent vanes when the vanes are in their inwardly folded positions. The vanes are angled retreatingly with respect to the direction of rotation of the rotor so that the force resulting from inward acceleration of a vane when it is crowded inwardly due to the oval shape assists centrifugal force and the biasing force in maintaining the vane in engagement with the wall of the chamber, in spite of the tendency of the compressed air to unseat the vane from the wall. In the preferred embodiment of the invention each vane is in the form of a thin laminated leaf spring, mounted cantilever-fashion on the rotor. In alternative forms of the invention the vanes are rigid having a rockable tongue and groove engagement with the rotor surface. In a final embodiment of the invention each vane has means at its outer edge positively for positioning the vane with respect to the wall of the chamber, holding it inwardly to establish running clearance and holding it outwardly so that it does not yield or retreat in the face of the reaction pressure of the compressed air.
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公开(公告)号：US3884664A
公开(公告)日：1975-05-20
申请号：US46329674
申请日：1974-04-23
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
CPC分类号： F04C28/24 , F04C23/003 , F04C29/06 , F25B9/004
摘要： A compressor-expander for use in air conditioning having a compressor side and an expansion side housing a vane-type rotor of the positive displacement type, each side having inlet and outlet ports and connected with an associated heat exchanger so that a charge of air drawn into the compressor side is compressed between adjacent vanes, cooled to remove heat of compression, and then expanded between adjacent vanes for discharge in the cold state. The compressor inlet port and expander outlet port are so positioned that the volume of an exiting charge of air is less than the volume of an entering charge of air in predetermined ratio so that air is discharged at nominally ambient pressure. An adjustable throttle valve is provided at one of the ports, preferably the expander inlet or outlet port, so that the initial pressure of the exiting charge is more nearly equal to the pressure on the discharge side of the expander outlet port, thereby to minimize explosive puffing of air and its attendant noise upon traverse of the vanes past the expander outlet port, the throttle valve being adjusted for minimum noise under a given set of operating conditions. In one of the aspects of the invention, means are provided for sampling the initial discharge pressure of an exiting charge of air and for comparing the pressure with that on the discharge side of the expander outlet port, the pressure differential being utilized for automatic and constant correction of the throttle valve to the minimum noise condition.
摘要翻译： 一种用于空调的压缩机膨胀机，其具有压缩机侧和膨胀侧，其容纳正排量型的叶片型转子，每侧具有入口和出口并与相关联的热交换器连接，使得空气抽吸 进入压缩机侧的压缩机在相邻叶片之间被压缩，冷却以除去压缩热，然后在相邻叶片之间膨胀，以在冷态下排出。 压缩机入口和膨胀器出口被定位成使得空气的排出量的体积小于预定比例的进入空气的体积，使得空气在标称环境压力下排出。 在一个端口（优选地为膨胀机入口或出口）处设置有一个可调节的节流阀，使得排出的电荷的初始压力更接近于膨胀器出口的排出侧的压力，从而使爆炸物 在经过膨胀机出口的叶片上穿过空气及其伴随的噪音，节气门在给定的一组操作条件下被调整为最小噪声。 在本发明的一个方面中，提供了用于对出口空气的初始排出压力进行采样并将压力与膨胀器出口的排放侧上的压力进行比较的装置，用于自动和恒定的压力差 将节流阀校正为最小噪声条件。
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公开(公告)号：US3877245A
公开(公告)日：1975-04-15
申请号：US42071273
申请日：1973-11-30
申请人： ROVAC CORP
发明人： EDWARDS THOMAS C
CPC分类号： F24F5/0085 , F24F3/14 , F24F5/0007 , F24F2003/144
摘要： An air conditioning system based upon use of a vane type compressor-expander and which includes means for tempering and drying the air discharged into the conditioned space as well as reducing any noise caused by the vanes. The air containing ice particles is conducted into a filter formed of porous, thermally conductive material, preferably sintered metal. The filter is thermally coupled to the ambient air so that it is maintained above freezing temperatures so that ice particles entrapped by the filter are converted into liquid moisture which is drained away. The discharge surface of the filter element is, in one embodiment of the invention, subjected to a flow of ambient air which not only warms the filter element but which mixes with the cold air being discharged therefrom to form a tempered air mix which is vented into the space. In another embodiment of the invention the filter is thermally coupled to the ambient by means of conductive fins. Flow of ambient air for tempering purposes is induced by an auxiliary fan, but in one embodiment of the invention the compressor-expander is provided with inlet and outlet conduits which are adjacent to one another with a filter in the outlet conduit which is thermally coupled to ambient air flowing through the inlet conduit and with provision for adjusting a degree of coupling.
摘要翻译： 一种基于叶片式压缩机 - 膨胀机的空调系统，其包括用于回火和干燥排放到调节空间中的空气的装置，以及减少由叶片引起的任何噪音。 含有冰颗粒的空气被导入由多孔导热材料，优选烧结金属形成的过滤器中。 过滤器与环境空气热耦合，使其保持在高于冰点的温度，使得被过滤器捕获的冰颗粒转化成被排出的液体水分。 在本发明的一个实施例中，过滤元件的排出表面经受环境空气流动，其不仅加热过滤元件，而且与从其排出的冷空气混合形成回火空气混合物，该回火空气混合物被排放到 空间。 在本发明的另一个实施例中，过滤器借助于导电翅片热耦合到环境。 用于回火的环境空气的流动由辅助风扇引起，但是在本发明的一个实施例中，压缩机 - 膨胀器设置有彼此相邻的入口和出口导管，出口导管中具有过滤器，热过滤器 环境空气流过入口导管并用于调节耦合程度。
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