Fluid treatment system for use with a washing appliance

• US 20060254626A1
• Filed: 12/23/2005
• Published: 11/16/2006
• Est. Priority Date: 12/30/2004
• Status: Abandoned Application

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Hammer, Donald J., Molitor, Christopher A., Fritze, Karl J., Botts, David M., Meuleners, William J.
• Application Number:
  US11/317,507
• Publication Number:
  US 20060254626A1
• Time in Patent Office: Days
• US Class Current: 134/110
• CPC Class Codes: A47L 15/0055 Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
• CPC Class Codes: A47L 15/4202 Water filter means or strainers
• CPC Class Codes: A47L 15/4217 Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
• CPC Class Codes: A47L 15/4291 Recovery arrangements, e.g. for the recovery of energy or water
• CPC Class Codes: A47L 15/4427 entrained in the water supply line by a pressure drop, e.g. resulting from a Venturi throat
• CPC Class Codes: A47L 2301/04 Operation mode, e.g. delicate washing, economy washing, reduced time, sterilizing, water softener regenerating, odor eliminating or service
• CPC Class Codes: A47L 2401/09 Water level
• CPC Class Codes: A47L 2401/14 Water pressure or flow rate
• CPC Class Codes: A47L 2501/01 Water supply, e.g. opening or closure of the water inlet valve
• CPC Class Codes: A47L 2501/07 Consumable products, e.g. detergent, rinse aids or salt
• CPC Class Codes: A47L 2501/26 Indication or alarm to the controlling device or to the user
• CPC Class Codes: B08B 3/14 Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquidstreatment of water in general C02F
• CPC Class Codes: D06F 39/006 Recovery arrangements, e.g. for the recovery of energy or water
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence
• CPC Class Codes: D06F 39/088 Liquid supply arrangements
• CPC Class Codes: D06F 39/10 Filtering arrangements
• CPC Class Codes: D06F 39/20 Arrangements for water recovery
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The present invention relates to washing appliances making use of fluids and fluid delivery systems. More particularly, the present invention relates to washing appliances having a fluid treatment system for treating a fluid that can be used or delivered by the appliance, with suitable treatments including, for example, filtration and/or addition of additives, such as rinse aids, detergents and/or the like.

Claims

1. A wash appliance having an integral fluid treatment system comprising:

a wash appliance housing; and

a fluid treatment system in the wash appliance housing, the fluid treatment system comprising;

one or more filtration stages for filtering water supplied from a fluid source inlet;

one or more additive dispensers in fluid communication with the one or more filtration stages and capable of adding one or more additives to the fluid; and

a controller for coordinating the flow of the fluid through one or more filtration stages and/or one or more additive dispensers.

2. The wash appliance of claim 1 wherein the wash appliance is a dishwasher or a clothes washer.

3. The wash appliance of claim 1 wherein the one or more filtration stages comprises a prefilter and a final rinse filter.

4. The wash appliance of claim 1 wherein the one or more filtration stages comprises replaceable treatment cartridges.

5. The wash appliance of claim 1 wherein the one or more additive dispensers comprise an additive introduction valve, additive introduction injector, or additive introduction pump.

6. The wash appliance of claim 1 further comprising a flow sensor in fluid communication with the one or more filtration stages and one or more additive dispensers and operably connected to the controller.

7. The wash appliance of claim 1 wherein the one or more additive dispensers is two additive dispensers.

8. The wash appliance of claim 1 wherein the one or more filtration stages and the one or more additive dispensers are in the form of a unitary insertion structure.

9. The wash appliance of claim 5 wherein the one or more additive dispensers further comprise an additive reservoir connected to the additive introduction valve, additive introduction injector, or additive introduction pump.

10. The wash appliance of claim 1 wherein the one or more additive dispensers is an additive dispenser for dispensing soap or an additive dispenser for dispensing rinse additive into the fluid.

11. The wash appliance of claim 4 wherein the replaceable treatment cartridges comprise depth filtration media, surface filtration media, crossflow filtration media, ion exchange media, activated carbon media, and combinations thereof.

12. The wash appliance of claim 10 wherein the fluid treatment system further comprises a rinse valve in fluid communication with a filtration stage and operably connected to the controller and:

1) a wash valve in fluid communication with the filtration stage and a soap dispenser and operably connected to the controller;

     2) a final rinse valve in fluid communication with filtration stage and a rinse additive dispenser and operably connected to the controller;

or

     3) a wash valve in fluid communication with the filtration stage and a soap dispenser and operably connected to the controller, and a final rinse valve in fluid communication with the filtration stage and a rinse additive dispenser and operably connected to the controller, wherein when the wash and/or final rinse valves are opened by the controller, the valves direct fluid through the soap and/or rinse additive dispenser and soap and/or rinse additive is introduced into the fluid.

13. The wash appliance of claim 1 wherein the one or more filtration stages comprises one or more replaceable filtration cartridges, and the one or more filtration cartridges are each capable of individual replacement.

14. The wash appliance of claim 9 wherein the additive introduction injector comprises a fixed venturi injector, an adjustable venturi injector, or a hydraulic injector.

15. The wash appliance of claim 9 wherein the additive reservoirs are capable of individual replacement and/or replenishment of their capacity.

16. A fluid treatment system for use in a washing appliance comprising:

one or more filtration stages for filtering water supplied from a fluid source inlet;

an actuatable rinse valve in fluid communication with the one or more filtration stages for directing fluid into a washbasin of the washing appliance and operably connected to a controller;

one or more additive dispensers in fluid communication with the one or more filtration stages and capable of adding one or more additives to the fluid before the treated fluid is directed to the washbasin; and

at least one actuatable additive valve in fluid communication with the one or more filtration stages, the additive valve capable of directing fluid to the one or more additive dispensers, the at least one additive valve being operably connected to the controller.

17. The fluid treatment system of claim 16 wherein the at least one additive valve is operably electrically connected to the controller.

18. The fluid treatment system of claim 16 wherein the one or more filtration stages comprise depth filtration media, surface filtration media, adsorptive media, crossflow filtration media, ion exchange media, activated carbon media, and combinations thereof.

19. The fluid treatment system of claim, 16 wherein the one or more additive dispensers comprise an additive introduction valve, additive introduction injector, or additive introduction pump.

20. The fluid treatment system of claim 19 wherein the one or more additive dispensers further comprise an additive reservoir connected to the additive introduction valve, additive introduction injector, or additive introduction pump.

21. The fluid treatment system of claim 20 wherein the additive introduction injector comprises a fixed venturi injector, an adjustable venturi injector, or a hydraulic injector.

22. The fluid treatment system of claim 20 wherein the one or more additive reservoirs are capable of individual replacement and/or replenishment of their capacity.

23. The fluid treatment system of claim 16 wherein the one or more filtration stages is a prefilter having a replaceable cartridge, wherein the actuatable rinse valve is a solenoid valve, wherein the at least one additive valve is a solenoid valve, and wherein the additive dispenser comprises a hydraulic injector assembly and an additive reservoir fluidly connected to an additive inlet of the hydraulic injector assembly.

24. An integral fluid treatment system for use in a washing appliance comprising:

a fluid treatment system assembly in fluid communication with a fluid distribution manifold assembly, and a controller operably connected to the fluid distribution manifold, the fluid treatment system assembly comprising;

a prefilter assembly comprising a prefilter manifold and a prefilter cartridge replaceably attached to the prefilter manifold; and

a wash additive assembly comprising a wash additive introduction member having a fluid inlet, a wash additive inlet, and a fluid outlet for dispensing fluid containing wash additive, and a wash additive reservoir connected to the wash additive inlet of the wash additive introduction member;

or

a rinse additive assembly comprising a rinse additive introduction member having a fluid inlet, an additive inlet, and a fluid outlet for dispensing fluid containing rinse additive, and a rinse additive reservoir connected to the rinse additive inlet of the rinse additive member;

or

both the wash additive assembly and the rinse additive assembly;

the distribution manifold assembly comprising a distribution manifold body having an internal distribution flow channel that operably fluidly interconnects a manifold fluid inlet and manifold fluid outlets, a fluid inlet valve, and fluid outlet valves operably, sealably mounted to the distribution manifold body to control fluid flow through the manifold fluid inlet and corresponding manifold fluid outlets, the manifold fluid outlets being fluidly connected to the fluid treatment system.

25. The integral fluid treatment system of claim 24 wherein the fluid treatment assembly is adapted to be placed within a door of the washing appliance.

26. The integral fluid treatment system of claim 24 wherein the distribution manifold assembly is adapted to be placed near a door of the washing appliance.

27. The integral fluid treatment system of claim 24 wherein each additive introduction member comprises a hydraulic injector.

28. The integral fluid treatment system of claim 24 wherein each additive reservoir is replaceable or replenishable.

29. The integral fluid treatment system of claim 24 wherein each additive introduction member comprises a venturi injector.

30. The integral fluid treatment system of claim 24 wherein the fluid inlet and outlet valves of the manifold assembly are solenoid valves electrically operably connected to the controller.

31. An adjustable venturi injector assembly and additive assembly for injecting an additive into a fluid comprising:

an adjustable venturi body having a fluid mix portion operably, fluidly interconnecting a fluid inlet flow portion, a fluid outlet flow portion, and an additive inlet flow portion having an additive inlet, wherein the fluid inlet portion comprises an inlet internal surface defining a cavity and an adjustable inlet connector body having a tapered flow channel, wherein the adjustable inlet connector body is movable concentrically within the fluid inlet portion cavity; and

an additive assembly comprising an additive reservoir fluidly connected to the additive inlet of the adjustable venturi body.

32. The adjustable venturi injector assembly and additive assembly of claim 31 wherein the additive inlet is fluidly connected to an additive connection assembly and the additive connection assembly includes a check valve within the additive connection assembly, the check valve being capable of opening when subjected to venturi induced vacuum.

33. The adjustable venturi injector assembly and additive assembly of claim 31 wherein the additive inlet is fluidly connected to an additive connection assembly and wherein the additive reservoir comprises a flexible bag having a handling end and a dispensing end and a dispenser assembly on the dispensing end, the dispenser assembly comprising a dispenser body adapted for insertion into the additive connection assembly.

34. The adjustable venturi injector assembly and additive assembly of claim 31 wherein the adjustable inlet connecter body has a circumferential thread engaged with inlet internal surface thread.

35. The adjustable venturi injector assembly and additive assembly of claim 34 wherein the adjustable inlet connector body is concentrically moveable within the fluid inlet portion cavity by means of engaging the threads through rotational motion.

36. The adjustable venturi injector assembly and additive assembly of claim 32 wherein the check valve within the additive connection assembly comprises a ball positioned proximate a spring.

37. The adjustable venturi injector assembly and additive assembly of claim 33 wherein the dispenser body contains a check valve capable of preventing reverse flow into the bag.

38. A fixed venturi injector assembly and additive assembly for injecting an additive into a fluid comprising:

a fixed venturi body having a fluid mix portion fluidly interconnecting a fluid inlet flow portion, a fluid outlet flow portion, and an additive inlet flow portion having an additive inlet fluidly connected to an additive connection assembly; and

an additive assembly comprising an additive reservoir fluidly connected to the additive inlet of the fixed venturi body.

39. The fixed venturi injector assembly and additive assembly of claim 38 wherein the additive connection assembly includes a check valve within the additive connection assembly, the check valve being capable of opening when subjected to venturi induced vacuum.

40. The fixed venturi injector assembly and additive assembly of claim 38 wherein the additive reservoir comprises a flexible bag having a handling end and a dispensing end and a dispenser assembly on the dispensing end, the dispenser assembly comprising a dispenser body adapted for insertion into the additive connection assembly.

41. The fixed venturi injector assembly and additive assembly of claim 40 wherein the dispenser body contains a check valve capable of preventing reverse flow into the bag.

42. A hydraulic injector assembly for injecting an additive into a fluid comprising:

a body assembly comprising an injector having an interior and a fluid flow outlet,

the injector comprising a fluid flow inlet fluidly connected to the injector interior, a biased piston assembly inside the injector interior, the piston assembly comprising a piston body having a major surface end and a distal injection surface end connected by a piston projection, the piston body capable of being moved in a direction opposite the fluid flow inlet when fluid contacts the major surface end of the piston, the distal surface of the piston in fluid communication with an additive inlet, the additive inlet in fluid communication with the fluid outlet via an additive flow channel.

43. The hydraulic injector assembly of claim 42 wherein the body assembly further comprises a fluid flow bypass inlet.

44. The hydraulic injector assembly of claim 42 wherein the piston projection is configured for slidable placement within the injector interior and within a hollow projection located within the injector interior.

45. The hydraulic injector assembly of claim 42 wherein the body assembly further comprises a second injector the second injector comprising a second fluid flow inlet fluidly connected to a second injector interior, a second biased piston assembly inside the second injector interior, the second piston assembly comprising a second piston body having a major surface end and a distal injection surface end connected by a piston projection, the second piston body capable of being moved in a direction opposite the fluid flow inlet when fluid contacts the major surface end of the piston, the distal surface of the piston in fluid communication with a second additive inlet, the second additive inlet in fluid communication with the fluid outlet via a second additive flow channel.