US3484811A - Rinsing system for dishwashing machines - Google Patents

Rinsing system for dishwashing machines Download PDF

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Publication number
US3484811A
US3484811A US714386*A US3484811DA US3484811A US 3484811 A US3484811 A US 3484811A US 3484811D A US3484811D A US 3484811DA US 3484811 A US3484811 A US 3484811A
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United States
Prior art keywords
valve
drying agent
timer
final rinse
rinsing system
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US714386*A
Inventor
Clyde R Weihe Jr
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Adamation Inc
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Adamation Inc
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Publication date
Priority claimed from US521594A external-priority patent/US3363636A/en
Application filed by Adamation Inc filed Critical Adamation Inc
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Publication of US3484811A publication Critical patent/US3484811A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
    • A47L15/4427—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids entrained in the water supply line by a pressure drop, e.g. resulting from a Venturi throat

Definitions

  • a rinsing system for a cycling type of dishwashing machine controlled by a timer The system is designed to rinse the dishes first in clear water and then in water to which a drying agent has been added.
  • An injector for the drying agent is installed on the machine and operated by a valve controlled by the timer. The valve is opened only during the latter part of the rinsing cycle.
  • This invention relates to dishwashing machines and more particularly to rinsing systems for machines of the commercial type.
  • the object of this invention is to provide a rinse system which satisfies the requirements for the quantity of rinse water used, and effects a substantial saving in the amount of drying agent which is needed in the final rinse.
  • the drying agent is introduced during the last portion only of the final rinse cycle.
  • the invention here disclosed is suitable for the door type of dishwasher, which is cycled in the customary manner by a timer.
  • An injector for drying agent is installed on the machine and operated by a valve controlled by the timer. The valve is opened only for the latter part of the rinsing cycle.
  • the drawing is a side elevation of a cycling type of dishwashing machine on which a rinsing system constructed according to the invention is installed.
  • the drawing illustrates a typical door type of machine having a housing 35 and a door 36 through which racks of dishes are inserted and removed.
  • the machine contains spray pipes 37 which are connected to a Water supply line 38 controlled by a valve 39.
  • the machine is run through various washing and rinsing cycles in the usual manner by a timer 4!] which controls the opening and closing of valve 39.
  • the last stage of the cycle is the final rinse.
  • a drying agent injector 41 is connected through a valve 42 to pipe 38, valve 42 is also controlled by the timer 40. The timer is set so that valve 42 opens during only the last portion of the final rinse stage.
  • valve 42 opens during only the last three to four seconds.
  • the dishes are thus rinsed with clear water for the first part of the final rinse cycle, and with the water to which the drying agent has been added to produce the usual concentration during the last part of the cycle.
  • This arrangement produces the same drying effect, while using only about a third of the amount of drying agent, as compared to the usual systems in which drying agent is injected during the entire final rinse cycle.
  • a dishwashing machine having a final rinse stage, comprising Water supply pipe for said final rinse stage, a first control valve mounted on said supply pipe, a device for supplying drying agent connected to said pipe and including a second control valve, and a timer controlling both said valves and adapted to open the first valve and subsequently open the second valve, said timer being adapted to hold said first valve open for a predetermined period and open said second valve after substantially twothirds of said period has run.

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  • Washing And Drying Of Tableware (AREA)

Description

Dec. 16, 1969 c. R. W'EI'HE. JR 3,484,811
RiNSING SYSTEM FOR nIsnwA-sama MACHINES Original Filed Jan. '19, 1966 FEIIIIIIIII:
cigde R. Wei-Fae, Jr. .9 WW r W52.
fliiai' iaegs United States Patent Int. Cl. B08b 3/02 US. Cl. 13458 1 Claim ABSTRACT OF THE DISCLOSURE A rinsing system for a cycling type of dishwashing machine controlled by a timer. The system is designed to rinse the dishes first in clear water and then in water to which a drying agent has been added. An injector for the drying agent is installed on the machine and operated by a valve controlled by the timer. The valve is opened only during the latter part of the rinsing cycle.
This application is a divisional application of my previous application Ser. No. 521,594 filed Jan. 19, 1966 and now Patent No. 3,363,636.
This invention relates to dishwashing machines and more particularly to rinsing systems for machines of the commercial type.
Most State laws require that dishes for use in public places, such as restaurants, be rinsed with a certain quantity of fresh water in the final rinse stage. It is also customary to introduce a drying agent into the final rinse water to insure that the dishes dry quickly. The object of this invention is to provide a rinse system which satisfies the requirements for the quantity of rinse water used, and effects a substantial saving in the amount of drying agent which is needed in the final rinse.
According to this invention the drying agent is introduced during the last portion only of the final rinse cycle. The invention here disclosed is suitable for the door type of dishwasher, which is cycled in the customary manner by a timer. An injector for drying agent is installed on the machine and operated by a valve controlled by the timer. The valve is opened only for the latter part of the rinsing cycle. Other objects, advantages, and novel features of the invention will be apparent from the following description.
The drawing is a side elevation of a cycling type of dishwashing machine on which a rinsing system constructed according to the invention is installed.
3,484,811 Patented Dec. 16, 1969 The drawing illustrates a typical door type of machine having a housing 35 and a door 36 through which racks of dishes are inserted and removed. The machine contains spray pipes 37 which are connected to a Water supply line 38 controlled by a valve 39. The machine is run through various washing and rinsing cycles in the usual manner by a timer 4!] which controls the opening and closing of valve 39. As is customary, the last stage of the cycle is the final rinse. A drying agent injector 41 is connected through a valve 42 to pipe 38, valve 42 is also controlled by the timer 40. The timer is set so that valve 42 opens during only the last portion of the final rinse stage. For example, if the time cycle for the final rinse is 12 seconds, valve 42 opens during only the last three to four seconds. The dishes are thus rinsed with clear water for the first part of the final rinse cycle, and with the water to which the drying agent has been added to produce the usual concentration during the last part of the cycle. This arrangement produces the same drying effect, while using only about a third of the amount of drying agent, as compared to the usual systems in which drying agent is injected during the entire final rinse cycle.
The extra timer contact, can be added, at very little expense, to new machines or to existing machines. This system effects a substantial saving in the cost of operation because of the smaller amount of drying agent required.
What is claimed is:
1. A dishwashing machine, having a final rinse stage, comprising Water supply pipe for said final rinse stage, a first control valve mounted on said supply pipe, a device for supplying drying agent connected to said pipe and including a second control valve, and a timer controlling both said valves and adapted to open the first valve and subsequently open the second valve, said timer being adapted to hold said first valve open for a predetermined period and open said second valve after substantially twothirds of said period has run.
References Cited UNITED STATES PATENTS 2,331,518 10/1943 Trier et al 134100XR 2,592,886 4/1952 Fox et a1 13495 XR 2,740,415 4/1956 Federighi et a1. 134-58 3,005,330 10/1961 Bochan 134-58 XR 3,013,568 12/1961 Getchell et a1 134-68 ROBERT L. BLEUTGE, Primary Examiner US. Cl. X.R. 13497, 98,
US714386*A 1966-01-19 1968-01-11 Rinsing system for dishwashing machines Expired - Lifetime US3484811A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US521594A US3363636A (en) 1966-01-19 1966-01-19 Rinsing system for dishwashing machines
US71438668A 1968-01-11 1968-01-11

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US3484811A true US3484811A (en) 1969-12-16

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209343A (en) * 1977-04-15 1980-06-24 Hobart Corporation Method for air transport of sanitizing liquid to a warewasher
US4235642A (en) * 1978-12-28 1980-11-25 Federighi George B Dishwasher using steam to heat cold wash and rinse waters and spray them against dishes during the wash and rinse cycles
US4919160A (en) * 1988-09-12 1990-04-24 Pierce Joseph B System for cleaning whirlpool baths
US5029594A (en) * 1988-09-12 1991-07-09 Pierce Jr Joseph B System for cleaning whirlpool baths
US5403905A (en) * 1986-08-01 1995-04-04 Kuraray Company, Ltd. Process for producing polyvinyl ester having a high degree of polymerization and process for producing polyvinyl alcohol having a high degree of polymerization
US6558784B1 (en) 1999-03-02 2003-05-06 Adc Composites, Llc Composite footwear upper and method of manufacturing a composite footwear upper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331518A (en) * 1940-05-16 1943-10-12 Cherry Burrell Corp Apparatus and method for sterilizing flowing water
US2592886A (en) * 1946-08-22 1952-04-15 Hobart Mfg Co Disinfectant injector for dishwashers
US2740415A (en) * 1955-01-24 1956-04-03 George J Federighi Apparatus for injecting drying agent into rinse spray system
US3005330A (en) * 1960-04-28 1961-10-24 Gen Electric Treating agent dispenser system for article-treating machines
US3013568A (en) * 1956-10-29 1961-12-19 Waste King Corp Dishwasher with dispenser for water conditioning liquid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331518A (en) * 1940-05-16 1943-10-12 Cherry Burrell Corp Apparatus and method for sterilizing flowing water
US2592886A (en) * 1946-08-22 1952-04-15 Hobart Mfg Co Disinfectant injector for dishwashers
US2740415A (en) * 1955-01-24 1956-04-03 George J Federighi Apparatus for injecting drying agent into rinse spray system
US3013568A (en) * 1956-10-29 1961-12-19 Waste King Corp Dishwasher with dispenser for water conditioning liquid
US3005330A (en) * 1960-04-28 1961-10-24 Gen Electric Treating agent dispenser system for article-treating machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209343A (en) * 1977-04-15 1980-06-24 Hobart Corporation Method for air transport of sanitizing liquid to a warewasher
US4235642A (en) * 1978-12-28 1980-11-25 Federighi George B Dishwasher using steam to heat cold wash and rinse waters and spray them against dishes during the wash and rinse cycles
US5403905A (en) * 1986-08-01 1995-04-04 Kuraray Company, Ltd. Process for producing polyvinyl ester having a high degree of polymerization and process for producing polyvinyl alcohol having a high degree of polymerization
US4919160A (en) * 1988-09-12 1990-04-24 Pierce Joseph B System for cleaning whirlpool baths
US5029594A (en) * 1988-09-12 1991-07-09 Pierce Jr Joseph B System for cleaning whirlpool baths
US6558784B1 (en) 1999-03-02 2003-05-06 Adc Composites, Llc Composite footwear upper and method of manufacturing a composite footwear upper
US6670029B2 (en) 1999-03-02 2003-12-30 Adc Composites, Llc Composite footwear upper and method of manufacturing a composite footwear upper

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