Apparatus, systems and methods for protecting pumps

• US 10,378,544 B2
• Filed: 11/23/2015
• Issued: 08/13/2019
• Est. Priority Date: 04/09/2015
• Status: Active Grant

• Current Assignee: Brian Rosser Rejniak, John Alan Rejniak
• Original Assignee: Brian Rosser Rejniak, John Alan Rejniak
• Inventors: Rejniak, Brian Rosser, Rejniak, John Alan
• Primary Examiner(s): Freay, Charles G
• Assistant Examiner(s): Pekarskaya, Lilya
• Application Number:
  US14/949,658
• Publication Number:
  US 20160298637A1
• Time in Patent Office: 1,359 Days
• CPC Class Codes: F04D 15/02 Stopping of pumps, or operating valves, on occurrence of unwanted conditions
• CPC Class Codes: F04D 15/0218 the condition being a liquid level or a lack of liquid supply
• CPC Class Codes: F04D 15/0263 the condition being temperature, ingress of humidity or leakage
• CPC Class Codes: F04D 27/008 Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
• CPC Class Codes: F04D 29/106 especially adapted for liquid pumps
• CPC Class Codes: H02K 11/20 for measuring, monitoring, testing, protecting or switching rectifiers H02K11/04; power electronics H02K11/33
• CPC Class Codes: H02K 2211/00 Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components

Abstract

Modules for protecting pumps are provided having a sensor detecting leaks of the pump seal, a sensor detecting rain and/or a sensor detecting that the pump is running dry and thus is overheated. Each sensor communicates with a circuitry configured to shut down the pump until the problem is resolved and to send a notice or alarm to a person or a system. A reset button may be provided to override the shutdown of the pump by the circuitry. Methods of using the modules are also provided.

Claims

1. A module for protecting an electrical pump configured to pump a liquid and having a pump, a motor, a shaft housing disposed between the pump and the motor, a motor shaft arranged in a horizontal direction and positioned inside the shaft housing, and a pump seal for preventing the liquid from reaching inside the shaft housing, the module comprising:

a circuitry, a collector positioned between a side of the motor shaft and an inner surface of the shaft housing, below the motor shaft inside the shaft housing and thus on a side of the pump seal facing the shaft housing, the collector having an opening facing the side of the motor shaft, and a liquid detection sensor positioned in the collector, the liquid detection sensor being adapted to send a signal to the circuitry to shut down the motor and generate a notice, when a portion of the liquid enters the collector due to a leak of the pump seal.

2. The module of claim 1, wherein the liquid is water.

3. The module of claim 2, wherein the collector is a tank.

4. The module of claim 1, wherein the collector is a portion of an inside cavity of the shaft housing.

5. The module of claim 1, wherein the notice is visual.

6. The module of claim 1, further comprising a reset button that can be actuated by a person to override the circuitry and allow the motor to run for a preset period of time.

7. The module of claim 3, wherein the tank provides 360 degrees of coverage around the motor shaft to collect any water traveling down the motor shaft and thus prevent it from reaching any other part inside of a motor housing.

8. The module of claim 7, further comprising a grommet that seals a joint between the motor shaft and the tank, thus preventing the advance of water or moisture from the motor shaft toward a front motor bearing, wherein the grommet has an oversized diameter that is a plurality of times greater than a diameter of the front motor bearing and a slopped back face to deflect water sprayed inside the shaft housing away from the front motor bearing.

9. The module of claim 3, wherein the tank is set at a 30 degrees angle between the bottom of the tank and horizontal.

10. The module of claim 1, wherein the liquid detection sensor is a float switch.

11. The module of claim 1, wherein the collector is a well positioned in a seal plate.

12. A pump apparatus adapted to pump a liquid, the pump apparatus comprising:

a pump, a motor, a shaft housing disposed between the pump and the motor, a motor shaft arranged in a horizontal direction and positioned inside the shaft housing, a pump seal adapted to prevent the liquid from reaching inside the shaft housing, a collector positioned between a side of the motor shaft and an inner surface of the shaft housing, below the motor shaft inside the shaft housing and thus on a side of the pump seal facing the shaft housing, the collector having an opening facing the side of the motor shaft, and a liquid detection sensor positioned in the collector, the liquid detection sensor being adapted to send a signal to a circuitry to shut down the motor when a portion of the liquid enters the collector due to a leak of the pump seal.