Total temperature probe
AssigneeRosemount Aerospace Inc.
InventorRichard W. Phillips
Life of this patent
Estimating the term…
Abstract
A temperature probe has a sensor housing with a sensor head and an associated scoop, together forming a primary airflow path, with the sensor head containing a sample chamber for the thermal sensor. Gaseous fluid is caused to pass through the primary airflow path, where its pressure is increased. The sample chamber is adjacent to the primary airflow path and configured to draw a sample of the flowing gaseous fluid out of the primary airflow path and bring it to and through the sampling chamber, while maintaining the sampled flow at essentially the same immersion depth as the primary airflow path. The sensor is connected to the housing and extends into the sampling chamber so that the gaseous fluid flows across the sensor's axis and sensing surface, rather than along the sensor's longitudinal axis.
Claims20
A temperature probe for measuring the temperature of a flowing fluid, the probe comprising:
- a sensor housing positioned at a specified immersion depth from a working surface, the housing having a primary flow path for passing the fluid therethrough in a primary flow path direction;
- a sample chamber that is adjacent to but out of the primary flow path, the sample chamber being fluidly connected to the primary flow path to receive a portion of the flowing fluid that is diverted to make a turn out of the primary flow path while travelling at essentially the same immersion depth as fluid flowing in the primary flow path;
- and
- a thermally responsive sensor within the sample chamber at the specified immersion depth for measuring the temperature of the fluid.
A temperature probe for measuring the temperature of a fluid in motion relative to a working surface, the probe comprising:
- a thermally responsive sensor having an active portion with a longitudinal axis and a sensing surface, at least part of which is substantially parallel to the longitudinal axis;
- a housing defining a primary flow path and a sample chamber with a longitudinal axis;
- the primary flow path extending and tapering from a leading edge inlet to a trailing edge outlet, for passing fluid therethrough at a specified immersion depth;
- the sample chamber being adjacent to but out of the primary flow path and being fluidly connected to vent ports effective to form a region with a relatively lower gaseous fluid pressure than that of the primary flow path, whereby a portion of fluid from the primary flow path flows through the sample chamber along a sample chamber flow path while traveling at essentially the same immersion depth as fluid flowing in the primary flow path;
- and
- the thermally responsive sensor being mounted in the housing with at least a portion of the sensing surface contained within the sample chamber and the sensor's longitudinal axis being oriented generally parallel the sample chamber's longitudinal axis and generally perpendicular to the primary flow path direction.
A temperature probe for measuring the temperature of a flowing fluid, the probe comprising:
- a sensor housing positioned at a specified immersion depth from a working surface, the housing having a sensor head and a scoop with side walls connected to the head, defining between them a primary flow path for passing the fluid therethrough in a primary flow path direction;
- a sample chamber in the sensor head and adjacent to but out of the primary flow path, the sensor chamber being fluidly connected to the primary flow path to receive a portion of the flowing fluid that is diverted to make a turn out of the primary flow path while travelling at essentially the same immersion depth as fluid flowing in the primary flow path;
- a thermally responsive sensor within the sample chamber, for measuring the temperature of the fluid at said immersion depth;
- and
- a heater in the sensor head positioned to deliver at least a portion of its heat output to the head immediately adjacent the side walls of the scoop.
Dependencies are inferred from the claim text.