公开(公告)号：US11262112B2

公开(公告)日：2022-03-01

申请号：US16700668

申请日：2019-12-02

Applicant: Johnson Controls Technology Company

Inventor： Rajiv K. Karkhanis ,  Nicholas P. Mislak

IPC: F25B39/04

Abstract: A heating, ventilation, and/or air conditioning (HVAC) system includes an air flow path through which an air flow is routed. The HVAC system also includes a first condenser coil positioned in the air flow path and configured to receive a first portion of a refrigerant from a refrigerant conduit. The HVAC system also includes a second condenser coil positioned in the air flow path downstream from the first condenser coil relative to the air flow, and configured to receive a second portion of the refrigerant from the refrigerant conduit in parallel with the first portion of the refrigerant received by the first condenser coil.

公开(公告)号：US10808950B2

公开(公告)日：2020-10-20

申请号：US15960318

申请日：2018-04-23

Applicant: Johnson Controls Technology Company

Inventor： Vinay Nanjappa ,  Nitin C. Dabade ,  Vishal S. Jagtap ,  Prashanti S. Dhawan ,  Marcel P. Ferrere ,  Rajiv K. Karkhanis ,  Curtis W. Caskey

IPC: B01D46/02 ,  F24F13/28 ,  F24F3/16 ,  B01D46/52 ,  B01D46/00

Abstract: A heating, ventilating, and air conditioning (HVAC) unit includes a filter track assembly that includes a bulkhead frame, a first rail configured to support a first air filter, and a second rail configured to support a second air filter. The first rail and the second rail are coupled to the bulkhead frame, and the first rail and the second rail are disposed on opposing sides of the bulkhead frame.

公开(公告)号：US20190331356A1

公开(公告)日：2019-10-31

申请号：US16022287

申请日：2018-06-28

Applicant: Johnson Controls Technology Company

Inventor： Aron M. Seiler ,  Nicholas P. Mislak ,  Chandra S. Yelamanchili ,  Rajiv K. Karkhanis ,  Nathan T. Ostrye

IPC: F24F11/38 ,  F24F11/56 ,  F24F11/61 ,  F24F11/64 ,  F24F11/65 ,  G05B19/042

Abstract: A heating, ventilation, and air conditioning (HVAC) system includes a compressor having a discharge port and a suction port, a first sensor configured to provide feedback corresponding to a first temperature of the working fluid exiting the compressor proximate the discharge port, a second sensor configured to provide feedback corresponding to a second temperature of the working fluid entering the compressor proximate the suction port, and an automation controller storing data indicative of an operational envelope. The operational envelope defines compressor operation coordinates corresponding to a range of suction temperatures and a range of discharge temperatures inside and outside of a target region of the operational envelope, and the automation controller is configured to control a target range of compressor speeds based on a comparison of the target region to an operation coordinate defined by the feedback from the first sensor and the feedback from the second sensor.

公开(公告)号：US20190257538A1

公开(公告)日：2019-08-22

申请号：US15950931

申请日：2018-04-11

Applicant: Johnson Controls Technology Company

Inventor： Marcel P. Ferrere ,  Neelkanth S. Gupte ,  Rajiv K. Karkhanis

IPC: F24F11/46 ,  F24F11/74 ,  F24F3/044 ,  F24F3/147 ,  F24F13/10 ,  F24F13/04

Abstract: The present disclosure relates to a heating, ventilation, and air conditioning (HVAC) system that includes an energy recovery conduit that is configured to extend between and fluidly couple an outlet of a central housing of an outdoor HVAC unit and a condenser section of the outdoor HVAC unit.

公开(公告)号：US20180094840A1

公开(公告)日：2018-04-05

申请号：US15718291

申请日：2017-09-28

Applicant: Johnson Controls Technology Company

Inventor： Douglas A. Kester ,  Curtis W. Caskey ,  James K. Spitzer ,  Chandra Yelamanchili ,  Nicholas P. Mislak ,  Rajiv K. Karkhanis

IPC: F25B40/02 ,  F25B41/06 ,  F25B39/00

CPC classification number: F25B41/062 ,  F25B39/00 ,  F25B39/028 ,  F25B40/02 ,  F25B41/067 ,  F25B43/006 ,  F25B49/02 ,  F25B49/022 ,  F25B2341/062 ,  F25B2341/0662 ,  F25B2341/0683 ,  F25B2400/13 ,  F25B2500/19 ,  F25B2600/0253 ,  F25B2600/2513 ,  F25B2700/13 ,  F25B2700/1931 ,  F25B2700/195 ,  F25B2700/197 ,  F25B2700/2115 ,  F25B2700/21163 ,  F25B2700/21175

Abstract: A cooling system includes a subcooling heat exchange assembly, which controls magnitude of subcooling of refrigerant circulated through the cooling system. The subcooling heat exchange assembly includes a first fluid line fluidly coupled to an output of a condenser to enable a first portion of the refrigerant output from the condenser to flow through the first fluid line; a second fluid line fluidly coupled to the output of the condenser to enable a second portion of the refrigerant output from the condenser to flow through the second fluid line; and an expansion valve disposed along the second fluid line, in which the expansion valve exerts a first pressure drop on the second portion of the refrigerant that facilitates extracting heat from the first portion of the refrigerant flowing through the first fluid line using the second portion of the refrigerant flowing through the second fluid line when valve position of the expansion valve is greater than a threshold position. Additionally the cooling system includes a plurality of capillary expansion tubes fluidly coupled in parallel to an output of the first fluid line and that to exert a second pressure drop on the refrigerant circulated through the cooling system.