Milwaukee, WI, United States
Milwaukee, WI, United States

Johnson Controls, Inc. is an American company globally offering products and services to optimize energy and operational efficiencies of buildings, automotive batteries, electronics and interior systems for automobiles.It is a Fortune 500 Diversified, multi-industrial, multinational conglomerate with 170,000 employees in more than 1,300 locations across six continents. It is listed as 67th in the Fortune 500 and 251st in Global 500. Wikipedia.


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Patent
Johnson Controls | Date: 2017-03-01

In an air conditioner, a compressor, a four-way valve, a use side heat exchanger, an expansion valve, and a heat source side heat exchanger are connected to configure a freezing cycle. The air conditioner includes a hot gas bypass circuit that connects a discharge side of the compressor and a portion between the heat source side heat exchanger and the expansion valve, an on-off valve that opens and closes a channel of the hot gas bypass circuit, and a control device that performs control to select one of hot gas bypass defrosting operation and reverse cycle defrosting operation according to a frosting amount on the heat source side heat exchanger and perform defrosting operation. When executing the hot gas bypass defrosting operation, the control device performs control to open the on-off valve of the hot gas bypass circuit such that a part of a refrigerant discharged from the compressor is supplied to the heat source side heat exchanger via the hot gas bypass circuit and, when executing the reverse cycle defrosting operation, the control device performs operation to switch the four-way valve such that the refrigerant discharged from the compressor is supplied to the heat source side heat exchanger after passing through the four-way valve.


Patent
Johnson Controls | Date: 2017-02-22

A configuration described below is adopted to reduce a pressure loss of compressed gas flowing in a discharge chamber, make it easy to attenuate pulsation of gas discharged to a discharge chamber, and reduce vibration and noise. A screw compressor includes male and female rotors, a casing that includes a bore for housing the rotors and in which a suction chamber and a discharge chamber are formed, a slide valve 9 forming a part of the bore and provided to be movable in an axial direction of the rotors, foot sections 30A and 30B provided on a discharge side end face of the slide valve, and discharge ports 22A and 22B provided on a discharge chamber side of the slide valve in order to discharge, to the discharge chamber, compressed gas taken into a compression operation chamber from the suction chamber and compressed. At a discharge side end portion of the slide valve, first discharge channels 34A and 34B for leading the compressed gas discharged from the discharge port and leading the compressed gas to the discharge chamber and second discharge channels 35A and 35B provided on a radial direction outer side of the first discharge channel and opened to the first discharge channels and the discharge chamber to lead a part of the compressed gas flowing in the first discharge channels and feed the part of the compressed gas to the discharge chamber.


Patent
Johnson Controls | Date: 2017-03-22

A control system is provided that can identify the occurrence of a single surge cycle in centrifugal compressor using various methods and devices. Once the occurrence of a single surge cycle is identified, the control system can take remedial action to respond to the surge cycle, such as by adjusting the position of a variable geometry diffuser, and restore the centrifugal compressor to stable operation.


Patent
Johnson Controls | Date: 2017-03-15

A control system is provided that can identify the occurrence of a single surge cycle in centrifugal compressor using various methods and devices. Once the occurrence of a single surge cycle is identified, the control system can take remedial action to respond to the surge cycle, such as by adjusting the position of a variable geometry diffuser, and restore the centrifugal compressor to stable operation.


Patent
Johnson Controls | Date: 2017-01-04

An air conditioner able to avoid the risk of fire and able to have a reduced number of refrigerant leakage detectors while using a refrigerant having a low global warming potential (GWP) is obtained. The air conditioner is provided with a heat source unit (2) configured so as to use a flammable refrigerant having a low global warming potential, and configured by housing inside a case (2a) refrigeration cycle components such as a heat exchanger (22) in which the refrigerant flows, an electric part box (28) in which electric parts and the like are housed, and a blower (24) driven by a motor (24a). Also, airflow is formed by the blower in the case, and the refrigeration cycle components in which the refrigerant flows are arranged in the airflow in the case, and the electric part box and electric parts such as the motor of the blower are arranged upstream from the refrigeration cycle components in the airflow.


Patent
Johnson Controls | Date: 2017-01-18

A grounding system for a semiconductor module (40) of a variable speed drive includes a first conductive layer (102), a second conductive layer (103); a substrate (110) disposed between the first conductive layer and the second conductive layer; a semiconductor device (112); and a base (104) attached to the second conductive layer, the base being connected to earth ground (108) via a grounding harness. The first conductive layer is in electrical contact with the semiconductor module and the substrate, and electrically insulated from the second conductive layer by the substrate. The second conductive layer is in electrical contact with the substrate and disposed between the substrate and the base in electrical communication with an earth ground. The first conductive layer, the substrate and the second conductive layer form a capacitance path between the semiconductor module and the base as well as electrical conductors and the base for reduction circulating currents within the semiconductor module.


Patent
Johnson Controls | Date: 2017-04-12

The invention discloses a novel four-direction headrest, which comprises a headrest housing, a U-shaped headrest bar, a Z-direction sliding fixing socket, an unlocking mechanism bracket, a tab, a tab return spring, an X-direction sliding fixing socket, an X-direction sliding guide, an unlocking steel wire, an unlocking button, wherein the locking and unlocking among the X-direction sliding fixing socket, the unlocking mechanism bracket, and the U-shaped headrest bar is realized by the unlocking steel wire, and the locking and unlocking between the tab and the X-direction sliding guide is realized by the tab movement driven by the unlocking steel wire. The locking and unlocking mechanism of the invention is simple, efficient and controllable.


Patent
Johnson Controls | Date: 2017-04-12

A screw compressor in which it is possible to achieve size reduction and reduce the oil rate while optimizing the effect of centrifugal separation and suppressing oil surface disturbing effects. A chiller unit equipped with the screw compressor is further provided. In the screw compressor, an oil separator includes: an outer cylinder; an inner cylinder positioned inside the outer cylinder; and an introducing flow path that lets refrigerant discharged from a compression working chamber flow in so that the refrigerant swirls to the circumferential direction on the inner wall surface of the outer cylinder. The upper end portion of the inner cylinder is held by the oil separator and the outer wall of the inner cylinder is thereby held independently of the inner wall of the outer cylinder. The outer cylinder includes a guide portion, wherein the guide portion comprises a side wall that is configured to gradually reduce a swirling radius of the refrigerant swirling in the guide portion. The guide portion further comprises an upper wall and a lower wall for suppressing the refrigerant swirling in the guide portion from spreading in a perpendicular direction, wherein the refrigerant flowing into the guide portion through the introducing flow path swirls while suppressed from spreading in the perpendicular direction in the guide portion and then is discharged from the guide portion so as to swirl and go down along the inner wall surface of the outer cylinder, thereby separated into the refrigerant gas and the oil. The separated refrigerant gas flows into the inner cylinder from a lower end portion of the inner cylinder and goes up while the separated oil flown down along the inner wall surface of the outer cylinder.


A chiller system is provided which comprises a compressor, a synchronous motor and a controller. The compressor is configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop. The synchronous motor is configured to drive the compressor, the motor comprising a stator winding and a rotor. The controller is configured to estimate a flux linkage of the rotor. The controller is further configured to provide a control signal to the motor based on the estimated flux linkage.


Grant
Agency: Cordis | Branch: H2020 | Program: IA | Phase: ICT-26-2014 | Award Amount: 10.78M | Year: 2015

Following the trends of the creation of the The Internet of Things (IoT) and the rapid penetration of SSL based lighting, it is very advantageous to connect the luminaires in buildings to the Internet. OpenAIS aims at setting the leading standard for inclusion of lighting for professional applications in to IoT, with a focus on office lighting. This will enable a transition from the currently existing closed and command oriented lighting control systems to an open and service oriented system architecture. Openness and service orientation will create an eco-system of suppliers of interoperable components and a market for apps that exploit the lighting system to add value beyond the lighting function. Added value can e.g. be related to more efficient use of the building, reduction of carbon footprint and increased comfort and wellbeing. In addition, IoT will facilitate smooth and effective interaction of the lighting system with other functions in a building such as e.g. HVAC, security and access control. Extensibility and security of the system architecture are important aspects and will be guaranteed. The OpenAIS project will define the requirements and use cases for offices in 2020, define the best open system architecture, identify existing ICT components to be used and develop additional components. The system will be validated by a pilot installation in a real office setting. After the OpenAIS project, the Consortium will pursue standardization of the system architecture, aiming at the creation of the leading standard for Internet connected lighting. The project brings together a strong collaboration of the leading lighting companies Zumtobel, Tridonic, and Philips and the major players in IoT technology ARM, NXP and Imtech. Consortium partner Johnson Controls represents the end user and academic knowledge on ICT and system architecture is present through TU/e and TNO-ESI. During the project, the Consortium will seek close cooperation with the IoT community.

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