# US 2018/0320778 A1 · Thermistor flow path > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0320778 A1 - Document ID: US20180320778A1 - Status: Published application - Kind: A1 - Application number: 16/038,614 - Filed: 2018-07-18 - Published: 2018-11-08 - Earliest claimed: 2016-05-27 - Assignees: GHSP, Inc. - Applicants: Ghsp, Inc. - Inventors: Ryan David Rosinski; Bradley John Vecellio - Web page: https://patentgrep.com/patent/US20180320778A1 ## CPC - F04C 2/102: {the two members rotating simultaneously around their respective axes} - F16H 57/0434: {relating to lubrication supply, e.g. pumps; Pressure control} - F04C 13/008: {Pumps for submersible use, i.e. down-hole pumping} - F04C 15/0096: {Heating; Cooling (of machines or engines in general F01P)} - F04C 29/045: {of the electric motor in hermetic pumps} - F04C 29/047: {Cooling of electronic devices installed inside the pump housing, e.g. inverters} - F04D 13/0646: {the hollow pump or motor shaft being the conduit for the working fluid} - F04D 13/0653: {the motor being flooded} - F04D 29/58: Cooling (of machines or engines in general F01P); Heating; Diminishing heat transfer {(for the motor of air-pump units F04D25/082; cooling of shafts or bearings F04D29/04)} - F04D 29/5806: {Cooling the drive system} - F04D 29/5813: {Cooling the control unit} - F04D 29/588: {cooling or heating the machine (F04D29/5886, F04D29/5893 take precedence)} - F16H 57/12: Arrangements for adjusting or for taking-up backlash not provided for elsewhere - F04C 2240/30: Casings or housings - F04C 2240/808: Electronic circuits (e.g. inverters) installed inside the machine - F04C 2270/195: Controlled or regulated - F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS - F16H: GEARING - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract A fluid pump includes a pump element in communication with an inlet and an outlet. Rotation of the pump element generates a suction at the inlet and pressure at the outlet. The suction and pressure cooperate to move a fluid through a fluid path. An accessory fluid path is in communication with the inlet and outlet. The accessory fluid path includes a thermistor in communication with the accessory fluid path. The thermistor monitors a temperature of the fluid within the accessory fluid path. ## Claims ### Claim 1 A fluid pump comprising: a pump element in communication with an inlet and an outlet, wherein rotation of the pump element generates an inward suction at the inlet and outward pressure at the outlet, and wherein the inward suction and outward pressure cooperate to move a fluid through a fluid path; an accessory fluid path in communication with the inlet and the outlet, wherein an orifice directs a portion of the fluid through the accessory fluid path; and a printed circuit board having a thermistor in communication with the accessory fluid path, wherein: the thermistor monitors a temperature of the fluid within the accessory fluid path; the pump element and the orifice regulate a predetermined amount of the fluid through the fluid path and away from the accessory fluid path; the pump element and the orifice also regulate an amount of the fluid in excess of the predetermined amount that defines an excess flow of the fluid; and the excess flow of the fluid is directed through the orifice and into the accessory fluid path. ### Claim 2 (depends on 1) The fluid pump of claim 1, wherein the thermistor is disposed within the accessory fluid path. ### Claim 3 (depends on 1) The fluid pump of claim 1, wherein the accessory fluid path includes the orifice that regulates flow of the fluid from the fluid path and into the accessory fluid path. ### Claim 4 (depends on 1) The fluid pump of claim 1, wherein the accessory fluid path extends around at least a portion of a rotor that drives the pump element. ### Claim 5 (depends on 1) The fluid pump of claim 1, wherein the accessory fluid path extends through a central channel of a drive shaft of the pump element. ### Claim 6 (depends on 5) The fluid pump of claim 5, wherein the central channel of the drive shaft extends through a portion of the pump element. ### Claim 7 (depends on 1) The fluid pump of claim 1, wherein the pump element is a positive displacement pump. ### Claim 8 (depends on 7) The fluid pump of claim 7, wherein the positive displacement pump is a generated rotor. ### Claim 9 (depends on 3) The fluid pump of claim 3, wherein the pump element includes an outlet shadow port that regulates a flow of the fluid through the outlet and through the accessory fluid path. ### Claim 10 (depends on 9) The fluid pump of claim 9, wherein the orifice is positioned proximate the outlet shadow port. ### Claim 11 A fluid pump comprising: a pump element in communication with a fluid path; an accessory fluid path that defines a portion of the fluid path; a shadow port in communication with the pump element, wherein the pump element and the shadow port regulate a flow of a fluid between a primary flow of the fluid that is directed to an outlet, and an excess flow of the fluid that is directed through the accessory fluid path and then to the outlet; wherein operation of the pump element in conjunction with the shadow port promotes the primary flow of the fluid toward the outlet and simultaneously promotes the excess flow of the fluid through the accessory fluid path; the excess flow of the fluid through the accessory fluid path is in thermal communication with a thermistor that is disposed on a circuit board; and the thermistor measures a fluid temperature of the excess flow of the fluid within the accessory fluid path. ### Claim 12 (depends on 11) The fluid pump of claim 11, wherein the thermistor is disposed within the accessory fluid path. ### Claim 13 (depends on 11) The fluid pump of claim 11, wherein the thermistor directly engages the excess flow of the fluid within the accessory fluid path. ### Claim 14 (depends on 11) The fluid pump of claim 11, wherein the pump element generates an inward pressure at an inlet of the fluid path and generates an outward pressure at the outlet of the fluid path. ### Claim 15 (depends on 11) The fluid pump of claim 11, wherein the pump element is a positive displacement pump. ### Claim 16 (depends on 11) The fluid pump of claim 11, wherein the shadow port includes an orifice that regulates the excess flow of the fluid into the accessory fluid path. ### Claim 17 (depends on 11) The fluid pump of claim 11, wherein the accessory fluid path extends from the pump element and around at least a portion of a rotor of a pump motor to the thermistor, and wherein the accessory fluid path extends from the thermistor and through a central channel of a drive shaft of the pump motor. ### Claim 18 (depends on 17) The fluid pump of claim 17, wherein the thermistor is positioned on a circuit board housing, and wherein the circuit board housing defines a portion of the accessory fluid path that directs the excess flow of the fluid from the rotor, into thermal communication with the thermistor and toward the outlet. ### Claim 19 A method of operating a fluid pump, the method comprising steps of: activating a pump element to suction a fluid into a fluid path; operating the pump element to direct a fluid to a position that defines a shadow port having an orifice; dividing the fluid into a primary flow of the fluid toward an outlet of the fluid path and an excess flow of the fluid through the orifice and into an accessory fluid path; directing the excess flow of the fluid toward a thermistor in thermal communication with the accessory fluid path; measuring a fluid temperature of the excess flow of the fluid in the accessory fluid path; and directing the excess flow of the fluid toward one of an inlet of the fluid path and the outlet of the fluid path. ### Claim 20 (depends on 19) The method of claim 19, wherein the thermistor is positioned within the accessory fluid path.