THERMISTOR FLOW PATH

• US 20180320778A1
• Filed: 07/18/2018
• Published: 11/08/2018
• Est. Priority Date: 05/27/2016
• Status: Abandoned Application

• Current Assignee: GHSP Incorporated (JSJ Corporation)
• Original Assignee: GHSP Incorporated (JSJ Corporation)
• Inventors: Rosinski, Ryan David, Vecellio, Bradley John
• Application Number:
  US16/038,614
• Publication Number:
  US 20180320778A1
• Time in Patent Office: Days
• CPC Class Codes: F04C 13/008 Pumps for submersible use, i.e. down-hole pumping
• CPC Class Codes: F04C 15/0096 Heating; Cooling of machines or engines in general F01P
• CPC Class Codes: F04C 2/102 the two members rotating simultaneously around their respective axes
• CPC Class Codes: F04C 2240/30 Casings or housings
• CPC Class Codes: F04C 2240/808 Electronic circuits (e.g. inverters) installed inside the machine
• CPC Class Codes: F04C 2270/195 Controlled or regulated
• CPC Class Codes: F04C 29/045 of the electric motor in hermetic pumps
• CPC Class Codes: F04C 29/047 Cooling of electronic devices installed inside the pump housing, e.g. inverters
• CPC Class Codes: F04D 13/0646 the hollow pump or motor shaft being the conduit for the working fluid
• CPC Class Codes: F04D 13/0653 the motor being flooded
• CPC Class Codes: 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
• CPC Class Codes: F04D 29/5806 Cooling the drive system
• CPC Class Codes: F04D 29/5813 Cooling the control unit
• CPC Class Codes: F04D 29/588 cooling or heating the machine F04D29/5886, F04D29/5893 take precedence
• CPC Class Codes: F16H 57/0434 relating to lubrication supply, e.g. pumps arrangement of pumps F16H57/0441; Pressure control grooves with pumping effect for supplying lubricant F16H57/0428; generation and variation of line pressure for transmission control F16H61/0021
• CPC Class Codes: F16H 57/12 Arrangements for adjusting or for taking-up backlash not provided for elsewhere

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

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.

2. The fluid pump of claim 1, wherein the thermistor is disposed within the accessory fluid path.

3. 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.

4. 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.

5. The fluid pump of claim 1, wherein the accessory fluid path extends through a central channel of a drive shaft of the pump element.

6. The fluid pump of claim 5, wherein the central channel of the drive shaft extends through a portion of the pump element.

7. The fluid pump of claim 1, wherein the pump element is a positive displacement pump.

8. The fluid pump of claim 7, wherein the positive displacement pump is a generated rotor.

9. 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.

10. The fluid pump of claim 9, wherein the orifice is positioned proximate the outlet shadow port.

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.

12. The fluid pump of claim 11, wherein the thermistor is disposed within the accessory fluid path.

13. The fluid pump of claim 11, wherein the thermistor directly engages the excess flow of the fluid within the accessory fluid path.

14. 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.

15. The fluid pump of claim 11, wherein the pump element is a positive displacement pump.

16. 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.

17. 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.

18. 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.

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.

20. The method of claim 19, wherein the thermistor is positioned within the accessory fluid path.