公开(公告)号：US20170051925A1

公开(公告)日：2017-02-23

申请号：US14832597

申请日：2015-08-21

Applicant: Google Inc.

Inventor： Mark Stefanski ,  Marie Pellat

IPC: F24D19/10 ,  F24H9/20

CPC classification number: F24D19/1084 ,  F24F1/00 ,  F24F11/30 ,  F24F11/52 ,  F24F2110/10 ,  F24F2110/20 ,  F24F2120/10 ,  F24H9/2085 ,  G05B15/02 ,  G05D23/1917 ,  G06F1/00

Abstract: This patent specification relates to methods and systems that can detect over cycling conditions that exist in an HVAC system. The over cycling condition can be caused by overheating of a forced air heating system or furnace of the HVAC system control. When the furnace overheats, a thermally actuated limit switch within the furnace may cut off power to a heat generation apparatus. The limit switch can reconnect the power to the heat generation apparatus after it has cooled down, at which point the thermostat control system may issue another heating call to continue heating the enclosure so that it reaches the desired temperature. If the overheat condition persist, then the thermally actuated switch will cut power, resulting in repeated power cycling. The detection system and methods can monitor these power loss events and use them as data points for determining whether an alert condition exists within the HVAC system.

Abstract translation: 该专利说明书涉及能够检测HVAC系统中存在的过度循环条件的方法和系统。 过热循环状态可能是由HVAC系统控制的强制空气加热系统或炉的过热引起的。 当炉子过热时，炉内的热致动极限开关可能会切断发电设备的电力。 限位开关在冷却后可以重新连接发热装置的电源，此时恒温器控制系统可以发出另一个加热呼叫，以继续加热外壳，使其达到所需的温度。 如果过热状态持续存在，则热驱动开关将切断电源，导致重复的电力循环。 检测系统和方法可以监测这些功率损耗事件，并​​将其用作数据点，以确定HVAC系统中是否存在警报条件。

公开(公告)号：US09915435B2

公开(公告)日：2018-03-13

申请号：US14832597

申请日：2015-08-21

Applicant: Google Inc.

Inventor： Mark Stefanski ,  Marie Pellat

IPC: G06F1/00 ,  F24D19/10 ,  F24H9/20 ,  F24F1/00 ,  G05B15/02 ,  G05D23/19 ,  F24F11/00

CPC classification number: F24D19/1084 ,  F24F1/00 ,  F24F11/30 ,  F24F11/52 ,  F24F2110/10 ,  F24F2110/20 ,  F24F2120/10 ,  F24H9/2085 ,  G05B15/02 ,  G05D23/1917 ,  G06F1/00

Abstract: This patent specification relates to methods and systems that can detect over cycling conditions that exist in an HVAC system. The over cycling condition can be caused by overheating of a forced air heating system or furnace of the HVAC system control. When the furnace overheats, a thermally actuated limit switch within the furnace may cut off power to a heat generation apparatus. The limit switch can reconnect the power to the heat generation apparatus after it has cooled down, at which point the thermostat control system may issue another heating call to continue heating the enclosure so that it reaches the desired temperature. If the overheat condition persist, then the thermally actuated switch will cut power, resulting in repeated power cycling. The detection system and methods can monitor these power loss events and use them as data points for determining whether an alert condition exists within the HVAC system.