-
公开(公告)号：US20220403845A1
公开(公告)日：2022-12-22
申请号：US17771715
申请日：2020-09-10
摘要： A delivery port of a rotary-screw compressor includes: a first opening having a profile configured to interrupt communication with a second working chamber of a suction process that opens only in the axial direction; a second opening connected to the first opening; and a third opening connected to the first opening and the second opening. The profile of the first opening includes: a first profile line that forms one of a pair of lateral edges of a lingulate protrusion configured to close off the second working chamber and extends toward a reference point; a second profile line that forms another one of the pair of the lateral edges of the protrusion; a third profile line that extends toward the reference point along the root circle of the female rotor; and a second connection line that connects the first profile line with the second profile line. The second opening is a first groove that opens into the first opening at the second connection line and extends toward a reference line. The third opening is a second groove that opens into the first groove and extends in an open state along the first profile line.
-
公开(公告)号：US20210381510A1
公开(公告)日：2021-12-09
申请号：US17288374
申请日：2019-09-04
摘要： A screw compressor includes plural screw rotors, plural suction-side bearings that each rotatably support the suction side of the plural screw rotors and plural discharge-side bearings that each rotatably support the discharge side of the plural screw rotors, and a casing that houses the plural screw rotors, the plural suction-side bearings, and the plural discharge-side bearings. Each screw rotor includes a lobe section with plural lobes and a suction-side shaft section and a discharge-side shaft section each disposed at both ends of the lobe section. The casing has a housing chamber that houses the lobe sections of the plural screw rotors and a lubrication path in which liquid that lubricates the plural suction-side bearings circulates. In the lubrication path, respective passages to lubricate each of the plural suction-side bearings are connected in series and a most downstream part is connected to the housing chamber.
-
公开(公告)号：US20200158377A1
公开(公告)日：2020-05-21
申请号：US16748062
申请日：2020-01-21
发明人： Kentaro YAMAMOTO , Masahiko TAKANO
摘要： A waste-heat recovery system includes a compressor main body; a gas piping, a waste-heat-recovery heat exchanger, a circulation circuit, and a tank with a water inlet piping and a water outlet piping that stores water that exchanges heat with the heat medium by connecting to the circulation circuit. The waste-heat recovery system also includes an inlet valve, a circulation pump, and a gas temperature sensor that detects the temperature of the compressed gas by arranging in the gas piping. The waste-heat recovery system also includes a water temperature sensor that detects the temperature of the water in the tank, and a control device that controls the inlet valve and the outlet valve according to detection temperature of the gas temperature sensor and the water temperature sensor.
-
公开(公告)号：US20190128264A1
公开(公告)日：2019-05-02
申请号：US16094136
申请日：2017-03-30
摘要： The objective of the present invention is to reduce loss factors that occur inside an oil-cooled screw compressor and to improve energy efficiency. In oil-cooled screw compressors, compression is carried out by reducing the volume of an operation chamber in which a gas to be compressed and an oil are mixed and contained, and when a predetermined rise in pressure is complete, a discharge port opens and the gas to be compressed and the oil are discharged. In the operation chamber, the reduction in volume continues and reaches zero, such that the operation chamber disappears, and the opening area of the discharge port also gradually decreases. Immediately before the operation chamber disappears, the ratio of the oil within the operation chamber is high and the opening area of the discharge port is small. Therefore, the discharge resistance increases and the internal pressure dramatically rises, and this has led to increases in the torque rotating the rotor. Thus, in the present invention, a tooth crest arc of a fixed width is provided to the tooth crest of a male tooth profile, and simultaneously a tooth bottom arc is provided to the tooth bottom of a female tooth profile. Due to the actions thereof, the operation chamber immediately before disappearing exists only in a bottom half region from a line that connects the centers of the male and female tooth profiles, and the opening area relative to the volume of the operation chamber can be increased. As a result, the discharge of oil becomes smooth and energy loss is reduced.
-
公开(公告)号：US20210102540A1
公开(公告)日：2021-04-08
申请号：US17127473
申请日：2020-12-18
摘要： A package-type compressor includes a body unit, a controller, a casing, a first cooling air inlet, a second cooling air inlet, a cooling air outlet, a fan duct, a cooling fan, an air cooling type heat exchanger, a machine chamber, and a cooling duct. The cooling duct is provided below the fan duct, the cooling duct causing the cooling air taken in at the second cooling air inlet to flow along the controller toward the suction port of the fan duct. A vertical projection plane of the cooling fan overlaps the machine chamber and the cooling duct.
-
公开(公告)号：US20190170143A1
公开(公告)日：2019-06-06
申请号：US16323595
申请日：2017-08-22
发明人： Kotaro CHIBA , Masahiko TAKANO , Toshikazu HARASHIMA , Kosuke SADAKATA , Kentaro YAMAMOTO , Takeshi TSUCHIYA , Masanao KOTANI , Ryoji KAWAI , Minako KANADA
摘要： Provided is a fluid machine configured such that liquid supplied to a working chamber from the outside of the fluid machine is dispersed extensively in the working chamber. This fluid machine is constituted of a screw rotor and a casing for accommodating the screw rotor and is provided with a liquid supply section for supplying liquid into a working chamber from the outside. The liquid supply section is configured so that liquid is dispersed in the longitudinal direction of the tooth groove of the screw rotor rather than in the width direction thereof.
-
公开(公告)号：US20160356289A1
公开(公告)日：2016-12-08
申请号：US15237990
申请日：2016-08-16
发明人： Masahiko TAKANO , Hideharu TANAKA
CPC分类号： F04C29/04 , F04C18/16 , F04C2240/81 , F04C2270/195 , F05B2260/20 , F25B31/004 , F25B43/02 , Y02P80/152
摘要： An oil-cooled gas compressor provided with a compressor body, an oil separator that separates out oil from a compressed gas, a gas pipe for sending the compressed gas, from which oil has been separated out by the oil separator, to a user, and an oil pipe for returning, to the compressor, the oil separated out by the oil separator. An air-cooled heat exchanger for cooling the aforementioned oil, a controllable-speed cooling fan for blowing cooling air at said air-cooled heat exchanger, and a waste-heat-recovery heat exchanger, provided upstream of the air-cooled heat exchanger, for recovering heat from the oil flowing through the abovementioned oil pipe, are also provided. The speed of the cooling fan is controlled so as to bring the temperature of the compressed gas discharged from the compressor body to within a prescribed range. It is possible both to recover waste heat from the oil heated by being used to cool the compressor and to suppress compressor temperature fluctuations, even if the load on the waste-heat-recovery equipment varies.
摘要翻译： 一种设置有压缩机体的油冷式气体压缩机，将压缩气体分离油的油分离器，将由油分离器将油分离出的压缩气体送到使用者的气体管道，以及 用于将由油分离器分离出的油返回到压缩机的油管。 用于冷却上述油的风冷式热交换器，在风冷式热交换器上吹送冷却空气的可控速冷却风扇和设置在风冷式热交换器上游的废热回收热交换器， 用于从流过上述油管的油回收热量。 控制冷却风扇的速度使得从压缩机主体排出的压缩气体的温度达到规定范围。 即使废热回收设备的负荷变化，也可以从用于冷却压缩机的加热油中回收废热，并抑制压缩机的温度波动。
-
公开(公告)号：US20220372982A1
公开(公告)日：2022-11-24
申请号：US17773184
申请日：2020-09-28
摘要： A compressor body includes a compression mechanism including a screw rotor that compresses gas, a casing that accommodates the compression mechanism and defines a compression working chambers therein, a suction side bearing that rotatably supports the screw rotor, a bearing chamber that accommodates the suction side bearing, and a liquid supply port that communicates with the compression working chambers and supplies liquid supplied from the outside of the casing into the compression working chambers. The casing has an internal liquid supply flow path that extends from a discharge side of the compression working chambers as an upstream side to a suction side of the compression working chambers as a downstream side and that supplies the liquid to the liquid supply port. The internal liquid supply flow path has a downstream portion reaching the bearing chamber and supplies the liquid to the suction side bearing.
-
公开(公告)号：US20200378385A1
公开(公告)日：2020-12-03
申请号：US16971575
申请日：2018-02-21
摘要： A screw compressor includes: a screw rotor including a rotor section and a shaft section; a casing having a shaft hole through which the shaft section is inserted, the casing housing the screw rotor; and a delivery side shaft sealing unit configured to seal a clearance between the shaft section and the shaft hole against leakage of a working fluid. The delivery side shaft sealing unit includes an annular groove provided in the shaft section, a seal ring disposed movably in an axial direction of the shaft section within the annular groove, the seal ring being capable of sliding contact with the shaft hole and a side wall surface of the annular groove, and a shaft sealing fluid supply passage communicating with the shaft hole and supplying a fluid to one side, in an axial direction, of the seal ring. The pressure of the fluid that is supplied to the one side, in the axial direction, of the seal ring via the shaft sealing fluid supply passage is set higher than pressure that acts on another side, in the axial direction, of the seal ring. Thus, high shaft sealing performance can be exerted even when the working fluid on the delivery side of the screw rotor has a pressure distribution in a circumferential direction.
-
公开(公告)号：US20190113251A9
公开(公告)日：2019-04-18
申请号：US16032554
申请日：2018-07-11
发明人： Kentaro YAMAMOTO , Masahiko TAKANO
摘要： The purpose of the present invention is: to enable hot water at a required temperature to be supplied, even in cases when compressor load factor is low; to suppress heat dissipation from a waste-heat recovery device; and to improve waste-heat recovery rate. A waste-heat recovery system in an oil-cooled gas compressor is provided with: a compressor main body (3); an oil separator (6); gas piping (8) which supplies, to a demanded destination compressed gas separated from oil by the oil separator; oil piping (7) which returns, to the compressor main body, the oil separated by the oil separator; and a waste-heat-recovery heat exchanger (10) which recovers heat from the compressed gas and/or the oil. The waste-heat recovery system is also provided with: a hot-water storage tank (19); circulation circuits (17, 18) in which a heat medium is made to circulate between the waste-heat recovery heat exchanger and the hot-water storage tank; a circulation pump (22) provided to these circulation circuits; and a control device (32) which, in cases when the temperature of the oil or the compressed gas subjected to heat exchange in the waste-heat-recovery heat exchanger is equal to or less than the temperature of the hot water in the hot-water storage tank, stops the circulation pump or reduces the rotational frequency of the circulation pump.
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.019 秒)