公开(公告)号：US10156396B2

公开(公告)日：2018-12-18

申请号：US15442790

申请日：2017-02-27

Applicant: Lennox Industries Inc.

Inventor： Der-Kai Hung ,  Harold Gene Havard, Jr. ,  Rosa Maria Leal

IPC: F25D21/04 ,  F25B49/00 ,  F25B49/02

Abstract: The present invention provides for a system for operating a heating, ventilation, and air conditioning (HVAC) system. A controller operates compressors in tandem connected to an evaporator. In response to detection of a pre-freezing condition of in the coils of the evaporator, the controller adjusts an operating condition of the HVAC system.

公开(公告)号：US09884394B2

公开(公告)日：2018-02-06

申请号：US14626851

申请日：2015-02-19

Applicant: Lennox Industries Inc.

Inventor： Harold Gene Havard, Jr. ,  Rakesh Goel ,  Rosa Maria Leal ,  Thomas Edward Pate, Jr.

IPC: F25B41/04 ,  B23P15/26

CPC classification number: B23P15/26 ,  F25B41/04 ,  F25B2500/07 ,  F25B2500/26 ,  F25B2600/2519 ,  Y10T29/49361

Abstract: Provided are a method and apparatus for reducing a refrigerant pressure difference within an HVAC system having a controller, one or more compressors, and at least two paths of refrigerant piping comprising alternative paths for refrigerant flow through the HVAC system. A valve is coupled to each refrigerant piping path for permitting, or preventing, refrigerant flow through each of the alternate paths of refrigerant piping. The controller may open at least one valve for a defined period of time in response to a triggering input to allow a refrigerant pressure difference within the HVAC system to dissipate across the opened valve.

公开(公告)号：US09759468B2

公开(公告)日：2017-09-12

申请号：US14221843

申请日：2014-03-21

Applicant: Lennox Industries Inc.

Inventor： Der-Kai Hung ,  Harold Gene Havard, Jr. ,  Rosa Maria Leal

IPC: F25B49/02

CPC classification number: F25B49/022 ,  F25B49/027 ,  F25B2400/075 ,  F25B2600/0251 ,  F25B2600/0271 ,  F25B2600/111 ,  F25B2600/23 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/195 ,  F25B2700/21152 ,  Y02B30/743

Abstract: The present invention provides for a control system for operating a heating, ventilation, and air conditioning (HVAC) system. A controller operates compressors in tandem. In response to detection of a high pressure condition in refrigerant flowing through a high pressure side of the HVAC system, the controller operates the HVAC system with a first compressor on and a second compressor off.

公开(公告)号：US20150168041A1

公开(公告)日：2015-06-18

申请号：US14109697

申请日：2013-12-17

Applicant: Lennox Industries Inc.

Inventor： Harold Gene Havard, Jr. ,  Terry Jewell ,  Yi Qu

IPC: F25B49/02

CPC classification number: F25B49/02 ,  F25B41/04 ,  F25B2341/0661 ,  F25B2400/075 ,  F25B2600/2507 ,  F25B2600/2513 ,  F25B2700/13

Abstract: In various implementations, an air conditioner may include more than one expansion device. Refrigerant flow through the expansion device(s) may be controlled based at least partially on an operational property of the air conditioner.

Abstract translation: 在各种实施方案中，空调可以包括多于一个的膨胀装置。 可以至少部分地基于空调的操作性质来控制通过膨胀装置的制冷剂流动。

公开(公告)号：US10684032B2

公开(公告)日：2020-06-16

申请号：US14642728

申请日：2015-03-09

Applicant: Lennox Industries Inc.

Inventor： Harold Gene Havard, Jr. ,  Rosa Maria Leal ,  Anuradha Sundararajan

IPC: F24F11/00 ,  F25B31/00 ,  F24F11/30 ,  F25B49/00 ,  F24F110/00 ,  F24F11/32

Abstract: Provided are a method and apparatus for verifying or correcting the temperature sensor and compressor pairings within the HVAC system control logic, indicating that a sensor is logically paired with the specific compressor, from amongst a tandem compressor group, to which the sensor is coupled.

公开(公告)号：US10190591B2

公开(公告)日：2019-01-29

申请号：US14560157

申请日：2014-12-04

Applicant: Lennox Industries Inc.

Inventor： Harold Gene Havard, Jr.

IPC: F04D27/00 ,  F04D17/10

Abstract: A blower unit controller and an HVAC system are disclosed herein. In one embodiment, the blower unit controller includes: (1) an input configured to receive motor operating parameters, (2) an output configured to provide a motor speed control signal to an inverter, (3) a memory configured to store a mathematical model of airflow produced by a blower motor, the mathematical model being configured to relate a motor speed to the motor operating parameters and (4) a processor configured to produce the speed control signal based on the mathematical model.

公开(公告)号：US10168082B2

公开(公告)日：2019-01-01

申请号：US14720451

申请日：2015-05-22

Applicant: Lennox Industries Inc.

Inventor： Marcus Troxell ,  Geoffrey Curtis ,  Miguel Montemayor ,  Harold Gene Havard, Jr.

IPC: F25D19/00 ,  F25D23/00 ,  F25B45/00 ,  F25B31/00 ,  F25B49/02

Abstract: A system and method are disclosed for compressor units in HVAC systems. A slide plate and slide rail assembly is described that can allow compressors to be slidably removed or adjusted to allow for easy repair or servicing. Instead of disassembling an entire compressor unit when repairs are needed on it or on neighboring components, the compressor unit can be quickly moved. Dual slide rail and slide plate configurations are described as well.

公开(公告)号：US10139143B2

公开(公告)日：2018-11-27

申请号：US14109697

申请日：2013-12-17

Applicant: Lennox Industries Inc.

Inventor： Harold Gene Havard, Jr. ,  Terry Jewell ,  Yi Qu

IPC: F25B49/00 ,  F25B49/02 ,  F25B41/04

Abstract: In various implementations, an air conditioner may include more than one expansion device. Refrigerant flow through the expansion device(s) may be controlled based at least partially on an operational property of the air conditioner.

公开(公告)号：US09869419B2

公开(公告)日：2018-01-16

申请号：US15162813

申请日：2016-05-24

Applicant: Lennox Industries Inc.

Inventor： Eric Perez ,  Steve Schneider ,  Harold Gene Havard, Jr.

IPC: B08B3/00 ,  F16K31/36 ,  B01D65/02 ,  F25D17/02 ,  F16L55/055 ,  F25B30/02 ,  F25B49/02 ,  F24D17/02 ,  F24F1/36 ,  F24D19/10 ,  F04B49/06 ,  F04B49/20 ,  F24F11/00

CPC classification number: F16L55/055 ,  F04B49/065 ,  F04B49/20 ,  F24D17/02 ,  F24D19/1039 ,  F24F1/36 ,  F24F11/54 ,  F24F2140/30 ,  F25B30/02 ,  F25B49/02 ,  F25B49/027 ,  F25B2339/047 ,  F25B2400/06

Abstract: In one embodiment, a water system includes a compressor, a condenser fluidly coupled to the compressor by refrigerant tubing, a modulating motor-controlled valve configured to alter a flow of water through the condenser, an accelerometer mechanically coupled to the water system, and a water system controller. The water system controller may be configured to perform an automated anti-water hammer procedure. During the automated anti-water hammer procedure, the water system controller may be configured to activate an operating procedure for the water system, transmit a control signal to the modulating motor-controlled valve, receive vibrational measurements received from the accelerometer, compare the vibrational measurements measured by the accelerometer to a predetermined vibration level associated with the operating procedure, and adjust the opening position and opening speed of the modulating motor-controlled valve for the operating procedure if the vibrational measurements exceed the predetermined vibration level associated with the operating procedure.