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Patent Agency Ranking
公开(公告)号：US10458690B2
公开(公告)日：2019-10-29
申请号：US14389488
申请日：2013-04-26
Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
Inventor： Curtis Christian Crane
Abstract: A control system controls the output capacity of a compressor to avoid surge conditions in the compressor. The control system determines a capacity control output for the compressor and then modifies the capacity control output in view of any output limiters or overrides as determined by system operating parameters and to maintain a minimum frequency of operation for the compressor.
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公开(公告)号：US20190203996A1
公开(公告)日：2019-07-04
申请号：US16234444
申请日：2018-12-27
Applicant: Johnson Controls Technology Company
Inventor： Curtis Christian Crane
CPC classification number: F25B49/022 , F25B31/006 , F25B31/008 , F25B41/04 , F25B49/025 , F25B2400/05 , F25B2400/13 , F25B2600/0253 , F25B2600/2519 , F25B2700/21156 , F25B2700/21157 , H02K11/25 , H02K11/35 , H02P29/64
Abstract: A control system includes processing and memory circuitry, the memory circuitry storing a temperature-based capacity control scheme for a chiller system and the processing circuitry being configured to perform the temperature-based capacity control scheme. The motor temperature-based capacity control scheme is performed as a function of a monitored temperature in a motor configured to drive a compressor of the chiller system, a first temperature threshold corresponding to the monitored temperature, and a second temperature threshold corresponding to the monitored temperature higher than the first temperature threshold.
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公开(公告)号：US11073319B2
公开(公告)日：2021-07-27
申请号：US16234444
申请日：2018-12-27
Applicant: Johnson Controls Technology Company
Inventor： Curtis Christian Crane
Abstract: A control system includes processing and memory circuitry, the memory circuitry storing a temperature-based capacity control scheme for a chiller system and the processing circuitry being configured to perform the temperature-based capacity control scheme. The motor temperature-based capacity control scheme is performed as a function of a monitored temperature in a motor configured to drive a compressor of the chiller system, a first temperature threshold corresponding to the monitored temperature, and a second temperature threshold corresponding to the monitored temperature higher than the first temperature threshold.
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公开(公告)号：US20190323751A1
公开(公告)日：2019-10-24
申请号：US16459432
申请日：2019-07-01
Applicant: Johnson Controls Technology Company
Inventor： Curtis Christian Crane , Mark Bodell, II , Curtis G. Rager , John C. Hansen , Dean K. Norbeck
IPC: F25B49/02
Abstract: A chiller system includes a compressor, a condenser and an evaporator in fluid communication. A motor drives the compressor. A variable speed drive powers the motor. An oil heater and pump system circulate heated lubricating oil in the compressor. A control panel is arranged to determine whether an input parameter is greater than or equal to a threshold parameter; deactivate the VSD in response to sensing that the input parameter is less than the threshold parameter; determine at least one chiller capacity control parameter at a point when the VSD is deactivated, and maintain the at least one chiller capacity control parameter while the VSD is deactivated; determine that the input parameter has been restored; determine a motor rotation and motor rotational speed; and in response to determining that the input parameter is restored and the motor is rotating in a forward direction, reactivate the VSD.
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公开(公告)号：US09574805B2
公开(公告)日：2017-02-21
申请号：US15026547
申请日：2014-09-24
Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
Inventor： Liming Yang , Curtis Christian Crane
CPC classification number: F25B31/006 , F25B31/008 , F25B49/022 , F25B2700/21156 , F25B2700/21157
Abstract: A method and apparatus for controlling temperature of a compressor motor (170) having a motor cooling circuit in a refrigeration system (1014) is provided. The motor cooling circuit includes a second expansion valve (1043) providing fluid communication between the condenser and the compressor motor. The compressor motor (170) is in fluid communication with the refrigeration circuit (1014) between downstream of the first expansion valve (1040) and a compressor inlet. Refrigerant is provided as a cooling fluid to the motor cooling circuit. A primary PID loop (402) and a secondary PID loop (414) are used to control the temperature and the flow of refrigerant to the motor (170).
Abstract translation: 提供一种用于控制在制冷系统（1014）中具有电动机冷却回路的压缩机电动机（170）的温度的方法和装置。 电动机冷却回路包括提供冷凝器和压缩机电动机之间的流体连通的第二膨胀阀（1043）。 压缩机马达170在第一膨胀阀1040的下游与压缩机入口之间与制冷回路1014流体连通。 制冷剂作为冷却流体提供给电动机冷却回路。 主PID回路（402）和副PID回路（414）用于控制制冷剂到电动机（170）的温度和流量。
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