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公开(公告)号：US12077426B1
公开(公告)日：2024-09-03
申请号：US18207865
申请日：2023-06-09
CPC分类号： B67D7/3272 , B67D7/62 , F04C14/28 , F04C2270/12 , F04C2270/86
摘要： A liquid discharge system includes a liquid product pump having a sensor for monitoring vibrations passing through an outer casing of the liquid product pump to detect an occurrence of cavitation within the liquid product pump. A system and method for controlling the operation of a liquid product pump in an engine-driven hydraulic discharge system. The liquid product pump has a vibration sensor operable to detect cavitation within the liquid product pump and for providing an electrical vibration signal to a speed control module. The speed control module is operable to process the vibration signal and to produce an electrical speed control signal that is provided to an electronic actuator. The electronic actuator is operable to actuate a motor control lever of a variable speed hydraulic motor to adjust the operating speed of the liquid product pump.
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公开(公告)号：US11976648B2
公开(公告)日：2024-05-07
申请号：US17269101
申请日：2019-11-28
发明人： Akihiro Yamamoto , Yoshiyuki Kanemoto , Daichi Oka
CPC分类号： F04B49/103 , F04B49/08 , F04C14/28 , F04C28/28 , F04B2201/0801 , F04B2203/0201 , F04B2203/0202 , F04B2203/0205 , F04B2205/05 , F04C2270/19 , F04C2270/44
摘要： Even when abnormal heat generation occurs during operation in a state where the temperature of a compressor is not increased, abnormality cannot be detected. A fluid machine includes a fluid machine body; a motor that drives the fluid machine body; a temperature sensor that measures a temperature of the fluid machine body; and a control unit that controls the fluid machine body. The control unit changes a temperature threshold value based on at least one of a pressure of a fluid discharged by the fluid machine body and a frequency of a voltage input into the motor, and issues a notification when the temperature of the compressor body measured by the temperature sensor exceeds the temperature threshold value.
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公开(公告)号：US20230366397A1
公开(公告)日：2023-11-16
申请号：US18317536
申请日：2023-05-15
发明人： Jonathan Bishop , Robert Edwards , Brandon Ahrens , Shane Dyson
CPC分类号： F04C14/06 , F04C18/16 , F04C14/28 , F04C14/24 , F04D29/063
摘要： Systems and methods for a compressor system are provided for selectively operating the compressor system with reduced power consumption. An output demand level of the compressor system can be monitored over time to identify a demand profile. A pressure setpoint for the compressor system can be selectively adjusted based on the demand profile, including to selectively transition between an operational pressure setpoint for an active demand profile and a reduced pressure setpoint for an inactive demand profile.
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公开(公告)号：US20230332599A1
公开(公告)日：2023-10-19
申请号：US18026587
申请日：2021-09-14
发明人： Lingli WAN , Lili LIU , Wei YE
CPC分类号： F04C14/28 , F04C11/008 , F04C2/10 , H02K11/25
摘要： An electronic oil pump includes a first rotor assembly, a stator assembly, an electric control board assembly, an isolation member and thermal conductive members; the first rotor assembly is located in a first chamber of the electronic oil pump, the thermal conductive members each comprise a first portion and a second portion, the first portions being located in a second chamber of the electronic oil pump, the second portions being located in a third chamber of the electronic oil pump; the electric control board assembly includes a base plate and a temperature-sensing unit, the base plate including first holes, an upper plate layer, a lower plate layer and at least one metal layer, a part of the second portions being located in the first holes; the temperature-sensing unit is located at one side of the second portion, there is a preset distance between the temperature-sensing unit and the second portion.
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公开(公告)号：US20230265846A1
公开(公告)日：2023-08-24
申请号：US17921483
申请日：2021-04-27
发明人： MICHAEL ROLFES , Nadja Hüdepohl , Peter Hartogh
CPC分类号： F04C14/28 , F04C2/16 , F04C2240/81 , F04C2270/06 , F04C2270/12 , F04C2270/18 , F04C2270/19
摘要： An eccentric screw pump hasa pump housing having a pump inlet opening and a pump outlet opening, a stator disposed in the pump housing, a rotor disposed in the stator, a drive unit comprising a drive motor and a driveshaft which for transmitting a torque connects the drive motor to the rotor, wherein the rotor for a rotating movement about a rotating axle is guided in the stator, a state sensor for detecting a state variable of the eccentric screw pump, where the state sensor, for detecting a state variable on the rotor or on the driveshaft, is disposed on the rotor or the driveshaft, or is connected to the rotor or the driveshaft by means of a signal line and is disposed so as to be spaced apart from the rotor or the driveshaft.
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公开(公告)号：US11644032B2
公开(公告)日：2023-05-09
申请号：US17255365
申请日：2019-07-01
CPC分类号： F04C14/06 , F04C5/00 , F04C14/08 , F04C14/28 , F04C2240/20 , F04C2240/40 , F04C2240/81 , F04C2270/0525 , F04C2270/20
摘要： The invention relates to an orbital pump for pumping a fluid, wherein the pump comprises at least one pump control system, a motor that can be controlled by the pump control system, a rotor shaft (10) for fluid transport, and a rotor sensor for detecting an absolute angle of rotation of the rotor shaft (40), the rotor sensor is connected to the pump control system and designed to transmit the angle of rotation of the rotor shaft (40) to the pump control system, and the pump control system is designed to rotationally control the rotor shaft (40) by means of the motor until the rotor shaft (40) is in a pre-determined angle of rotation position.
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公开(公告)号：US11542945B2
公开(公告)日：2023-01-03
申请号：US16151961
申请日：2018-10-04
发明人： Tihomir Mikulic , Klaus Feller
IPC分类号： F04C29/04 , F04C18/08 , F25B31/00 , F04C29/00 , F04B39/12 , F04B39/02 , F04C14/28 , F04C29/02 , F04C28/28 , F04C18/16 , F04C28/06
摘要： A refrigerant compressor unit, including a compressor housing and at least one compressor element that is arranged in the compressor housing, is movable by bearing and drive parts, and operates in at least one compressor chamber, at least one lubricant supply point arranged in the compressor housing for at least one of the bearing and drive parts and/or compressor element, and a lubricant supply line to the at least one lubricant supply point, wherein the lubricant supply line has a lubricant storage chamber through which lubricant flows and in which a lubricant presence sensor is arranged for detecting the presence of lubricant in the lubricant storage chamber.
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公开(公告)号：US11512697B2
公开(公告)日：2022-11-29
申请号：US16874770
申请日：2020-05-15
IPC分类号： F04C14/28
摘要： A method for determining a flow volume of a fluid delivered by a pump. The flow volume is determined as a function of predefined pump information depending on a pump geometry, rotation speed information, which correlates with the rotation speed of the pump, and pressure information, which correlates with a differential pressure at the pump.
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公开(公告)号：US11236744B2
公开(公告)日：2022-02-01
申请号：US15635577
申请日：2017-06-28
申请人： FLUID-O-TECH S.R.L.
IPC分类号： F04B49/24 , F16K17/04 , F16K31/00 , F16K17/38 , F04C28/26 , F04C28/28 , G05D7/01 , F04C14/26 , F04C14/28 , F04C28/24 , F04C14/24
摘要： A hydraulic pump is described, comprising at least one inlet duct for a fluid, at least one outlet duct for the fluid and at least one pumping unit interposed between the inlet and outlet ducts. At least one multifunction valve is interposed between the inlet duct, upstream of the pumping unit, and the outlet duct, downstream of the pumping unit, which valve is configured to divert the flow of fluid from the inlet duct to the outlet duct without the fluid flowing into the pumping unit. The multifunction valve comprises a valve body that defines an inner bypass channel in which a shutter element is axially movable, an actuator member operatively associated with the shutter element and configured to move it from a closing position to an opening position of the bypass channel, and an elastic contrast element operatively associated with the shutter element and configured to keep it in the first closing position of the bypass channel when such shutter element is not actuated by the actuator member. The actuator member consists of a bias spring manufactured with a shape memory alloy, configured to move the shutter element from the first closing position to the second opening position of the bypass channel when a predefined temperature value is reached.
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公开(公告)号：US11171580B2
公开(公告)日：2021-11-09
申请号：US15538455
申请日：2015-12-22
发明人： Al Duerr , Aaron Brassard , John Doyle , Wray Sparling
IPC分类号： H02P3/22 , H02H5/04 , H02H7/20 , H02P3/02 , H02H3/08 , H02P27/04 , F04C2/107 , F04C14/28 , F04C15/00
摘要： The invention relates to fluid drive systems used in fluid wells and brake systems for permanent magnet wellhead direct drives. The braking controller connects or disconnects a brake resistor from a back EMF. A variable frequency drive (VFD) drives the motor and communicates with the control circuitry of the brake controller. The control circuitry monitors the brake resistor and depending on the rotational speed and direction of the motor and operating state of the VFD, disconnects or connects the brake resistor. If the direction of the motor is in reverse and above a threshold speed, it connects the brake resistor. If the direction of the motor is in reverse and below the threshold speed, the control circuitry dissipates stored back EMF through the brake controller. The amount of stored back EMF corresponds to the time to empty a pump.
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