Apparatus and method for cooking and dispensing starch

• US 6,507,966 B1
• Filed: 05/14/2001
• Issued: 01/21/2003
• Est. Priority Date: 06/03/1999
• Status: Expired due to Term

• Current Assignee: Perfect Starch Incorporated
• Original Assignee: Perfect Starch Incorporated
• Inventors: Mitchell, Wilson Wayne, Mitchell, Wesley Wayne
• Primary Examiner(s): Stinson, Frankie L.
• Application Number:
  US09/831,764
• Time in Patent Office: 617 Days
• Field of Search: 68/17.R, 682/07, 134/93, 137/268, 127/28, 815/8
• US Class Current: 8/158
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence
• CPC Class Codes: D06F 39/026 the powder or tablets being added directly, e.g. without the need of a flushing liquid

Abstract

An apparatus for cooking and dispensing starch to laundry machines has a hopper (10) holding dry starch and a stirrer (15) and auger (25) for delivering predetermined amounts of dry starch to a mixing chamber (35) to be mixed with water. The mixing chamber (35) has a circulation pump (60) for circulating the starch and water mixture. A pressure pump (70) delivers starch and water mix from the mixing chamber (35) to a cooking chamber (80). The cooking chamber (80) also receives steam, which cooks the starch and water mix. A programmed computer (100) causes the apparatus to receive a request for starch from a laundry machine and dispense a predetermined amount of cooked starch to the requesting machine through one or more discharge valves (125) connected to a manifold (120). The computer (110) starts and stops the stirrer (15), auger (25), pressure pump (70), a steam valve (100), and discharge valves (125) to particular laundry machines in a programmed sequence.

Claims

1. An apparatus for cooking and dispensing starch to a laundry machine, the apparatus comprising:

a. a mixing chamber for mixing dry starch and water together to form a starch and water mixture;

b. a pressure pump having an input and an output, the pressure pump having its input connected to the mixing chamber;

c. a cooking chamber, the cooking chamber having a first opening connected to the output of the pressure pump, a second opening for receiving steam, and a third opening for discharge of cooked starch;

d. a steam valve connected to the second opening of the cooking chamber;

e. a temperature-regulating valve connected to the steam valve;

f. a source of steam connected to the temperature-regulating valve; and

,

g. a computer operatively connected to the pressure pump and the steam valve, the computer being programmed to start the pressure pump a pre-determined time before opening the steam valve, and to stop the pressure pump a predetermined time after closing the steam valve.

2. The apparatus of claim 1 where the apparatus further comprises an auger connected to an auger motor for dispensing a predetermined amount of dry starch into the mixing chamber.

3. The apparatus of claim 2 where the computer starts the auger motor a predetermined time after opening the steam valve.

4. The apparatus of claim 2 where the computer stops the auger motor a predetermined time before closing the steam valve.

5. The apparatus of claim 1 where the apparatus further comprises a stirrer connected to a stirrer motor for maintaining a smooth flow of dry starch into the mixing chamber.

6. The apparatus of claim 5 where the computer starts the stirrer motor a predetermined time after opening the steam valve.

7. The apparatus of claim 5 where the computer stops the stirrer motor a predetermined time before closing the steam valve.

8. The apparatus of claim 1 further comprising at least one circulation pump internal to the mixing chamber, for circulating the starch and water mixture within the mixing chamber.

9. The apparatus of claim 1 further comprising a least one circulation pump external to the mixing chamber for circulating the starch and water mixture within the mixing chamber.

10. The apparatus of claim 1 where the computer is responsive to a signal from a laundry machine requesting starch.

11. An apparatus for cooking and dispensing starch to one or more laundry machines, the apparatus comprising:

a. a mixing chamber for mixing dry starch and water together to form a starch and water mixture;

b. a pressure pump having an input and an output, the pressure pump having its input connected to the mixing chamber;

c. a cooking chamber, the cooking chamber having a first opening connected to the output of the pressure pump, a second opening for receiving steam, and a third opening for discharge of cooked starch;

d. a steam valve connected to the second opening of the cooking chamber;

e. a temperature-regulating valve connected to the steam valve;

f. a source of steam connected to the temperature-regulating valve;

g. a manifold connected to the third opening of the cooking chamber;

h. one or more discharge valves connected to the manifold, each of the discharge valves connected to a corresponding laundry machine;

i. a computer operatively connected to the pressure pump, the steam valve, and the discharge valves;

the computer being programmed to start the pressure pump a pre-determined time before opening the steam valve, and to stop the pressure pump a predetermined time after closing the steam valve; and

further to open the discharge valve connected to a laundry machine requesting cooked starch a predetermined time before starting the pressure pump, and to close the discharge valve connected to the laundry machine requesting cooked starch a predetermined after stopping the pressure pump.

12. The apparatus of claim 11 where the apparatus further comprises an auger connected to an auger motor for dispensing a predetermined amount of dry starch into the mixing chamber.

13. The apparatus of claim 11 where the computer starts the auger motor a predetermined time after opening the steam valve.

14. The apparatus of claim 13 where the computer stops the auger motor a predetermined time before closing the steam valve.

15. The apparatus of claim 11 where the apparatus further comprises a stirrer connected to a stirrer motor for maintaining a smooth flow of dry starch into the mixing chamber.

16. The apparatus of claim 15 where the computer starts the stirrer motor a predetermined time after opening the steam valve.

17. The apparatus of claim 15 where the computer stops the stirrer motor a predetermined time before closing the steam valve.

18. The apparatus of claim 11 further comprising at least one circulation pump internal to the mixing chamber, for circulating the starch and water mixture within the mixing chamber.

19. The apparatus of claim 11 further comprising a least one circulation pump internal to the mixing chamber for circulating the starch and water mixture within the mixing chamber.

20. The apparatus of claim 11 where the computer is responsive to a signal from a dry machine requesting starch.

21. An apparatus for cooking and dispensing starch to one or more laundry machines, the apparatus comprising:

a. a hopper for holding dry starch, the hopper positioned over a mixing chamber for mixing dry starch and water together to form a starch and water mixture;

b. a stirrer positioned within the hopper, the stirrer connected to a stirrer motor;

c. an auger positioned with respect to the hopper so as to receive dry starch from the hopper and deliver a predetermined amount of dry starch to the mixing chamber;

the auger having an auger motor;

d. a circulation pump for circulating the starch and water mixture within the mixing chamber;

e. a pressure pump having an input and an output, the pressure pump having its input connected to the mixing chamber;

f. a cooking chamber, the cooking chamber having a first opening connected to the output of the pressure pump, a second opening for receiving steam, and a third opening for discharge of cooked starch;

g. a steam valve connected to the second opening of the cooking chamber;

h. a temperature-regulating valve connected to the steam valve;

i. a source of steam connected to the temperature-regulating valve;

j. a manifold connected to the third opening of the cooking chamber;

k. a plurality of discharge valves connected to the manifold, the discharge valves further connected to a corresponding plurality of laundry machines;

l. a computer operatively connected to the pressure pump and the steam valve, the computer being programmed to;

(1) respond to a signal from a laundry machine requesting starch,

(2) start the pressure pump a pre-determined time before opening the steam valve,

(3) stop the pressure pump a predetermined time after closing the steam valve,

(4) start the stirrer motor a predetermined time after opening the steam valve,

(5) stop the stirrer motor a predetermined time before closing the steam valve,

(6) start the auger motor a predetermined time after opening the steam valve,

(7) stop the auger motor a predetermined time before closing the steam valve,

(8) open the discharge valve connected to a laundry machine requesting cooked starch a predetermined time before starting the pressure pump, and,

(9) close the discharge valve connected to the laundry machine requesting cooked starch a predetermined after stopping the pressure pump.

22. A method for cooking and dispensing starch to one or more laundry machines, comprising the steps of:

a. receiving a start signal from a laundry machine requesting cooked starch;

b. opening a discharge valve to the requesting machine;

c. delaying for a first time sufficient to allow the discharge valve to open;

d. starting a pressure pump;

e. opening a steam valve connected to a cooking chamber;

f. delaying for a time sufficient for the cooking chamber to reach optimum cooking temperature;

g. starting motors for a stirrer of dry starch, and an auger for delivering dry starch to a mixing chamber;

h. delaying for a time sufficient to allow a cooked starch mixture to be dispensed to the requesting laundry machine;

i. stopping the stirrer and auger motors;

j. delaying for a time sufficient to wash excess cooked starch from lines connecting the cooking chamber and the requesting laundry machine;

k. turning off the steam valve;

l. turning off the pressure pump; and

,

m. closing the discharge valve.