Rinseable splash shield and method of use

• US 7,520,662 B2
• Filed: 04/28/2005
• Issued: 04/21/2009
• Est. Priority Date: 11/15/2002
• Status: Active Grant

• Current Assignee: F'Real Foods LLC (Rich Products Corporation)
• Original Assignee: F'Real Foods LLC (Rich Products Corporation)
• Inventors: Farrell, James J.
• Primary Examiner(s): SOOHOO, TONY GLEN
• Application Number:
  US11/116,497
• Publication Number:
  US 20050201198A1
• Time in Patent Office: 1,454 Days
• Field of Search: 366/347, 366/348, 366/349, 134/115.R
• US Class Current: 366/347
• CPC Class Codes: A47J 2043/04472 with a mixing unit vertically movable relative to the support
• CPC Class Codes: A47J 43/0705 for machines with tools driven from the upper side A47J43/0727 - A47J43/08 take precedence
• CPC Class Codes: B01F 27/805 wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
• CPC Class Codes: B01F 35/145 Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
• CPC Class Codes: B01F 35/1453 by means of jets of fluid, e.g. air

Abstract

The present application describes a method for rinsing a splash shield with water or a sanitizing solution. According to the disclosed method, a vessel containing contents to be mixed is positioned in a mixing machine, and a splash shield is positioned to shield the opening of the vessel. After the material within the vessel is mixed by a mixing element, the splash shield is separated from the vessel and rinsed by a nozzle on the mixing machine.

In another embodiment, a vessel containing contents to be mixed is positioned in a holder on a mixing machine, and a splash shield (which may or may not be rinseable) is positioned over the opening of the vessel. The contents of the vessel are mixed using a mixing element. During and/or after mixing, opposed relative movement of the mixing element and vessel may occur, creating an upward lifting force on the vessel. The weight of the shield is sufficient to overcome this upward lifting force on the vessel and thereby causes the vessel to remain seated in the holder.

Claims

1. A method for rinsing a splash shield on a mixing machine, the method comprising the steps of:

providing a vessel containing material to be mixed, the vessel including an opening;

further providing a mixing machine having a holder for receiving the vessel at an access location in the mixing machine, a rotatable mixing element extendable into the vessel for mixing the material, a splash shield positionable to shield the opening of the vessel, and a nozzle oriented towards the splash shield;

after mixing the material in the vessel using the mixing element and with the splash shield shielding the vessel opening, unshielding the vessel opening and directing hot rinsing fluid onto the splash shield using the nozzle while isolating the access location from the rinsing fluid.

2. The method of claim 1, wherein the directing step is performed automatically after the separating step.

3. The method of claim 1, wherein the holder is moveable in a first direction towards the splash shield and a second direction away from the splash shield and wherein the unshielding step includes the step of moving the holder in the second direction.

4. The method of claim 3, wherein:

the mixing element is on a shaft;

the splash shield is engageable with a portion of the shaft, the splash shield disengageable from that portion of the shaft in response to upward force against the shield, and

mixing is carried out with the splash shield disengaged from that portion of the shaft;

the step of moving the holder in the second direction separates the vessel and splash shield and causes the splash shield to engage with the portion of the shaft; and

the method further includes the step of rotating the shaft to rotate the splash shield during the directing step.

5. The method of claim 1, further including the step of rotating the splash shield during the directing step.

6. The method of claim 1, wherein the directing step directs warm rinse fluid.

7. The method of claim 1, further including the step of directing rinsing fluid onto the mixing element.

8. The method of claim 1, wherein the method includes the steps of:

with the mixing element in the material in the vessel, causing relative movement of the mixing element and vessel in opposite directions, and

causing the splash shield to retain the vessel within the holder during relative movement of the mixing element and vessel in opposite directions.

9. The method of claim 8, wherein in the causing step the mass of the splash shield retains the vessel within the holder.

10. The method of claim 1, wherein the directing step directs a rinse solution comprising sanitizing solution.

11. The method of claim 10, wherein the sanitizing solution includes a quaternary ammonium sanitizer solution.

12. The method of claim 10, wherein the sanitizing solution is a heated sanitizing solution.

13. The method of claim 1, wherein the providing step provides an upwardly directed first nozzle and a downwardly directed second nozzle, and wherein the directing step directs fluid from the first and second nozzles.

14. The method of claim 1, wherein the providing step provides the splash shield to be positionable in contact with the vessel and covering the opening, and wherein the unshielding step includes separating the splash shield and the vessel.

15. The method of claim 1, wherein the providing step provides the mixing machine to include a chamber, and wherein the directing step includes isolating the splash shield within the chamber.

16. The method according to claim 1, wherein the providing step provides a barrier moveable into a position between the chamber and the access area, and wherein the isolating step includes moving the barrier to the position.

17. The method of claim 16, wherein the barrier includes a door moveable into a closed position covering the chamber, and wherein the isolating step includes moving the door to the closed position.

18. The method of claim 17, wherein the door is positioned at a sloped angle, and wherein the directing step includes allowing rinse fluid flowing off of the splash shield to contact the door and then flow down the slope and off the door into a receiving channel and into a drain.

19. The method of claim 18 wherein the holder is moveable between a first position in which the opening of vessel is external to the chamber and a second position in which the opening of the vessel is within the chamber, and wherein the isolating step includes moving the holder from the second position to the first position and positioning the barrier between the holder in the first position and the chamber.

20. The method of claim 17, wherein the isolating step further includes moving the holder in a direction away from the chamber.

21. A method for rinsing a splash shield on a mixing machine, the method comprising the steps of:

providing a vessel containing material to be mixed, the vessel including an opening;

further providing a mixing machine having a holder for receiving the vessel, a rotatable mixing element extendable into the vessel for mixing the material, a splash shield positionable to shield the opening of the vessel, and a nozzle oriented towards the splash shield;

after mixing the material in the vessel using the mixing element and with the splash shield shielding the vessel opening, unshielding the vessel opening and directing rinsing fluid onto the splash shield using the nozzle while isolating the vessel from the rinsing fluid.

22. The method of claim 21, wherein the isolating step isolates the holder from the rinsing fluid.