公开(公告)号：US20140260552A1

公开(公告)日：2014-09-18

申请号：US14291673

申请日：2014-05-30

Applicant: Caterpillar Inc.

Inventor： Gerald Richard Morris ,  Arlene Jane Gottshall ,  Mark Bradley Nitzsche ,  Daniel Alan Spurgeon

IPC: G01M3/02

CPC classification number: G01M3/2815

Abstract: A method to test a heating ventilation and air conditioning (HVAC) unit for external leaks is disclosed. The HVAC unit includes a first and a second port and is coupled to an auxiliary air movement test system using one of the first or the second ports. The other of the first or the second ports of the HVAC unit is blocked. The auxiliary air movement test system includes an air movement device, a conduit, a flow velocity sensor, and a pressure sensor. The air movement device enables airflow into the HVAC unit through the conduit. The flow velocity sensor positioned within the conduit measures air velocity. The pressure sensor is positioned in proximity to a condensate drain of the HVAC unit that measures the pressure within the HVAC unit. The method disclosed determines external leaks in the HVAC unit if the measured air velocity exceeds a predefined air velocity at a predetermined pressure.

Abstract translation: 公开了一种用于测试外部泄漏的加热通风和空调（HVAC）单元的方法。 HVAC单元包括第一和第二端口，并且使用第一或第二端口之一耦合到辅助空气移动测试系统。 HVAC单元的第一个或第二个端口中的另一个被阻塞。 辅助空气移动测试系统包括空气移动装置，导管，流速传感器和压力传感器。 空气移动装置使通过管道的空气流入HVAC装置。 位于管道内的流速传感器测量空气流速。 压力传感器位于HVAC装置的冷凝水排放口附近，用于测量HVAC装置内的压力。 如果测量的空气速度超过预定压力下的预定空气速度，则所公开的方法确定HVAC单元中的外部泄漏。

公开(公告)号：US20190017312A1

公开(公告)日：2019-01-17

申请号：US15651405

申请日：2017-07-17

Applicant: Caterpillar Inc.

Inventor： Douglas John Hovel ,  Daren Robert Carr ,  Erick Alan Njos ,  Daniel Alan Spurgeon ,  Micheal David Valerio

IPC: E05F15/70 ,  G01N33/00

CPC classification number: E05F15/70 ,  E05Y2900/518 ,  E05Y2900/531 ,  E05Y2900/55 ,  G01N33/004

Abstract: A system and method for monitoring a cabin of machine is provided. The system includes an operator presence sensor, a cabin pressure sensor, a door sensor, and a carbon dioxide sensor configured to generate the first output signal, the second output signal, the third output signal and the fourth output signal respectively. The system includes a controller configured to selectively process at least one of the first output signal, the second output signal, the third output signal or the fourth output signal. The controller is further configured to control one or more conditions inside the cabin based on the selective processing of the at least one of the first output signal, the second output signal, the third output signal or the fourth output signal.

公开(公告)号：US10352084B2

公开(公告)日：2019-07-16

申请号：US15651405

申请日：2017-07-17

Applicant: Caterpillar Inc.

Inventor： Douglas John Hovel ,  Daren Robert Carr ,  Erick Alan Njos ,  Daniel Alan Spurgeon ,  Micheal David Valerio

IPC: E05F15/70 ,  G01N33/00

Abstract: A system and method for monitoring a cabin of machine is provided. The system includes an operator presence sensor, a cabin pressure sensor, a door sensor, and a carbon dioxide sensor configured to generate the first output signal, the second output signal, the third output signal and the fourth output signal respectively. The system includes a controller configured to selectively process at least one of the first output signal, the second output signal, the third output signal or the fourth output signal. The controller is further configured to control one or more conditions inside the cabin based on the selective processing of the at least one of the first output signal, the second output signal, the third output signal or the fourth output signal.