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    Multiple stage modulating gas fired heat exchanger
    6.
    发明授权
    Multiple stage modulating gas fired heat exchanger 有权

    公开(公告)号：US10174967B2

    公开(公告)日：2019-01-08

    申请号：US14976354

    申请日：2015-12-21

    Applicant: Lennox Industries Inc.

    Inventor： Steven Schneider ,  Eric Perez ,  Bryan Smith ,  John Tran

    IPC: F24H9/20 ,  F24H3/08 ,  F24H3/00 ,  F24H3/02

    Abstract: A modulating heating system includes a tube heat exchanger having a plurality of burners, a combustion air blower (CAB) having an exhaust vent connected with the plurality of burners, the CAB operable at a first speed and a second speed, a first valve connecting a fuel source to a first subset of the plurality of burners, and a second valve connecting a fuel source to a second subset of the plurality of burners, wherein the first and second valves each have a low fire rate and a high fire rate. The heat exchanger is operable through multiple heat stages at a constant fuel-air mixture.

    METHOD OF DEFROSTING AN ENERGY RECOVERY VENTILATOR UNIT
    7.
    发明申请
    METHOD OF DEFROSTING AN ENERGY RECOVERY VENTILATOR UNIT 审中-公开

    公开(公告)号：US20180003404A1

    公开(公告)日：2018-01-04

    申请号：US15708530

    申请日：2017-09-19

    Applicant: Lennox Industries Inc.

    Inventor： Justin MCKIE ,  Eric Perez ,  Herman Marcus Thomas ,  Steve Schneider

    IPC: F24F11/00 ,  F24F12/00

    CPC classification number: F24F11/30 ,  F24F11/41 ,  F24F12/006 ,  F24F2140/30

    Abstract: A method of defrosting an energy recovery ventilator unit. The method comprises defrosting an energy recovery ventilator unit. The method comprises activating a defrost process of an enthalpy-exchange zone of the energy recovery ventilator unit when an air-flow blockage in the enthalpy-exchange zone coincides with a frost threshold in the ambient environment surrounding the energy recovery ventilator unit. The method also comprises terminating the defrost process when a heat transfer efficiency across the enthalpy-exchange zone returns to within 10 percent of a pre-frosting heat transfer efficiency wherein, the heat transfer efficiency is proportional to a temperature difference between an intake air zone of the energy recovery ventilator and a supply air zone of the energy recovery ventilator divided by a temperature difference between an return air zone of the energy recovery ventilator and the intake air zone.

    System for heating a compressor assembly in an HVAC system
    8.
    发明授权
    System for heating a compressor assembly in an HVAC system 有权
    用于加热HVAC系统中的压缩机组件的系统

    公开(公告)号：US09482222B2

    公开(公告)日：2016-11-01

    申请号：US14048221

    申请日：2013-10-08

    Applicant: Lennox Industries Inc.

    Inventor： Eric Perez ,  Rakesh Goel

    IPC: F04B49/06 ,  F25B31/00 ,  F25B43/02 ,  F25B49/02

    CPC classification number: F04B49/02 ,  F04B49/06 ,  F25B31/002 ,  F25B43/02 ,  F25B49/022 ,  F25B2400/01 ,  F25B2500/16 ,  Y10T137/0318 ,  Y10T137/6416

    Abstract: The present invention provides a system for heating a compressor assembly of a heating, ventilation, and air conditioning (HVAC) system. The system comprises a heat source for transferring thermal energy to a plurality of compressor units. A controller varies the thermal energy transferred to the compressor units, between at least two substantially non-zero rates of transfer of thermal energy, in a plurality of modes of operation of the HVAC system.

    Abstract translation: 本发明提供一种用于加热加热，通风和空调（HVAC）系统的压缩机组件的系统。 该系统包括用于将热能传递到多个压缩机单元的热源。 在HVAC系统的多种操作模式中，控制器改变传递到压缩机单元的热能，在至少两个基本上非零的热能传递速率之间。

    Layout for an Energy Recovery Ventilator System
    9.
    发明申请
    Layout for an Energy Recovery Ventilator System 审中-公开
    能量回收呼吸机系统布局

    公开(公告)号：US20160298869A1

    公开(公告)日：2016-10-13

    申请号：US15187073

    申请日：2016-06-20

    Applicant: Lennox Industries Inc.

    Inventor： Justin McKie ,  Eric Perez ,  Bryan Smith ,  Steve Schneider

    IPC: F24F12/00 ,  F24F13/30 ,  F24F13/20

    CPC classification number: F24F12/001 ,  B23P15/26 ,  F24F13/20 ,  F24F13/30 ,  F24F2013/205 ,  F24F2203/104 ,  Y02B30/563 ,  Y10T29/4935

    Abstract: An energy recovery ventilator unit. The unit comprises a cabinet housing a primary intake zone, a supply zone, a return zone, an exhaust zone and an enthalpy-exchange zone. The primary intake zone and the exhaust zone are both on one side of the enthalpy exchange zone. The supply zone and the return zone are both on an opposite side of the enthalpy exchange zone. The unit also comprises first and second blowers. The first blower is located in the primary intake zone and configured to push outside air into the primary intake zone and straight through the enthalpy exchange zone into the supply zone. The second blower is located in the return zone and configured to push return air into the return zone and straight through the enthalpy exchange zone into the exhaust zone.

    Abstract translation: 能量回收呼吸机组。 该单元包括容纳主进气区，供应区，返回区，排气区和焓交换区的箱体。 主进气区和排气区都在焓交换区的一侧。 供应区和返回区都在焓交换区的相对侧。 该装置还包括第一和第二鼓风机。 第一鼓风机位于主入口区域中并且构造成将外部空气推入主入口区域并且直接通过焓交换区进入供应区域。 第二鼓风机位于返回区域中并且构造成将返回空气推回到返回区域并且直接通过焓交换区进入排气区域。

    Method and system for supply-air re-circulation
    10.
    发明授权
    Method and system for supply-air re-circulation 有权

    公开(公告)号：US11788761B2

    公开(公告)日：2023-10-17

    申请号：US17181050

    申请日：2021-02-22

    Applicant: Lennox Industries Inc.

    Inventor： Rakesh Goel ,  Eric Perez

    IPC: F24F12/00 ,  F24F11/30 ,  F24F110/40 ,  F24F110/20 ,  F24F110/30 ,  F24F110/10

    CPC classification number: F24F12/006 ,  F24F11/30 ,  F24F2110/10 ,  F24F2110/20 ,  F24F2110/30 ,  F24F2110/40

    Abstract: An HVAC system includes an evaporator coil disposed between a supply air duct and a return air duct. A re-circulation duct fluidly couples the supply air duct and the return air duct. A damper is disposed in the re-circulation duct and is moveable between an open position and a closed position. A controller is operatively coupled to a variable-speed compressor, a variable-speed circulation fan, and the damper. Responsive to a determination that the variable-speed circulation fan is operating at the minimum speed and the suction pressure is above the pre-determined threshold, the controller signals the damper to move to the open position. Responsive to a determination that the variable-speed circulation fan is not operating at the minimum speed or the suction pressure is below the pre-determined threshold, the controller signals the damper to move to the closed position.

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