Pressure assist feature for pressure fryer

Patent metadata

Field	Value
Publication number	US-9814355-B2
Application number	US-201314077930-A
Country	US
Kind code	B2
Filing date	Nov 12, 2013
Priority date	Nov 12, 2013
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

Methods and systems disclosed herein may be methods for rapidly increasing pressure in a pressure fryer cooking vessel during a cooking cycle. Such methods and systems may comprise determining whether a pressure output in the cooking vessel is closed. Such methods and system may also include determining a pressure of the cooking vessel, comparing the pressure of the cooking vessel to a predetermined optimal pressure to determine whether the pressure of the cooking vessel is less than the optimal pressure, and activating a filter pump configured to supply air from a drain pan into the cooking vessel in response to determining that the pressure output is closed and the pressure of the cooking vessel is less than the optimal pressure. Such methods and systems may further include deactivating the filter pump when the pressure within the cooking vessel is equal to or greater than the optimal pressure.

First claim

What is claimed is:

1. A method for rapidly increasing pressure in a cooking vessel of a pressure fryer during a cooking cycle, the pressure fryer also including a controller having at least one processor and a memory, the method comprising:
starting the cooking cycle of a food product by closing a lid of the pressure fryer and activating, automatically by the controller, heating elements to heat up a cooking medium and the food product in the cooking vessel, the cooking cycle therefore being a pressure cooking cycle;
determining, automatically by the controller, whether a pressure output in the cooking vessel is open or closed, the pressure output configured to vent at least one of air and steam out of the cooking vessel when the cooking vessel is closed to the outside environment with the lid;
determining, automatically by the controller, a pressure of the cooking vessel;
comparing, automatically by the controller, the pressure of the cooking vessel to a predetermined optimal pressure to determine whether the pressure of the cooking vessel is less than the optimal pressure;
in response to determining that both the pressure output is closed and the pressure of the cooking vessel is less than the optimal pressure, activating, automatically by the controller, a filter pump configured to supply air from a drain pan into the cooking vessel to help build pressure in the cooking vessel;
deactivating, automatically by the controller, the filter pump when the pressure within the cooking vessel is equal to or greater than the optimal pressure;
activating a top off pump configured to supply cooking medium from a reservoir into the cooking vessel in response to determining that a volume of the cooking medium in the cooking vessel is less than an optimal volume;
determining, automatically by the controller, whether a maximum pump time for the filter pump is exceeded after activating the filter pump and when the pressure within the cooking vessel is less than the optimal pressure; and
deactivating, automatically by the controller, the filter pump in response to determining that the maximum pump time is exceeded.

2. The method according to claim 1 , wherein prior to activating the filter pump:
the filter pump is not activated, automatically by the controller, in response to a comparison that the pressure of the cooking vessel is equal to or greater than the optimal pressure, and
the filter pump is activated, automatically by the controller, in response to a comparison that the pressure of the cooking vessel is less than the optimal pressure.

3. The method according to claim 1 , further comprising:
in response to determining that the pressure output is open, determining, automatically by the controller, whether a predetermined amount of time remains until an end of the cooking cycle or whether the cooking cycle is cancelled, and
performing, automatically by the controller, one of the following actions based on determining whether the predetermined amount of time remains until the end of the cooking cycle or whether the cooking cycle is cancelled:
in response to determining that the predetermined amount of time remains until the end of the cooking cycle or that the cooking cycle is cancelled, not activating the filter pump during the cooking cycle, and
in response to determining that the predetermined amount of time does not remain until the end of the cooking cycle and that the cooking cycle is not cancelled, checking again to determine whether the pressure output in the cooking vessel is open or closed.

4. The method according to claim 1 , further comprising:
determining, automatically by the controller, whether the pressure output is open after activating the filter pump, and
deactivating, automatically by the controller, the filter pump in response to determining that the pressure output is open.

5. The method according to claim 1 , further comprising:
determining, automatically by the controller, whether a predetermined amount of time remains until an end of the cooking cycle after activating the filter pump, and
deactivating, automatically by the controller, the filter pump in response to determining that the predetermined amount of time remains until the end of the cooking cycle.

6. The method according to claim 1 , further comprising:
determining, automatically by the controller, whether the cooking cycle is cancelled after activating the filter pump, and
deactivating, automatically by the controller, the filter pump in response to determining that the cooking cycle is cancelled.

7. The method according to claim 1 , further comprising:
determining whether a drain valve in the cooking vessel is closed after determining that the pressure output is closed and prior to activating the filter pump, the drain valve configured to drain cooking medium from the cooking vessel into the drain pan when open; and
activating, automatically by the controller, the filter pump after determining that the drain valve is closed.

8. The method according to claim 1 , wherein the pressure output comprises a pressure solenoid.

9. A method for rapidly increasing pressure in a cooking vessel of a pressure fryer during a cooking cycle, the pressure fryer also including a controller having at least one processor and a memory, the method comprising:
starting the cooking cycle of a food product by closing a lid of the pressure fryer and activating, automatically by the controller, heating elements to heat up a cooking medium and the food product in the cooking vessel, the cooking cycle therefore being a pressure cooking cycle;
determining, automatically by the controller, whether a pressure output in the cooking vessel is open or closed, the pressure output configured to vent at least one of air and steam out of the cooking vessel when the cooking vessel is closed to the outside environment with the lid;
determining, automatically by the controller, a pressure of the cooking vessel;
comparing, automatically by the controller, the pressure of the cooking vessel to a predetermined optimal pressure to determine whether the pressure of the cooking vessel is less than the optimal pressure;
in response to determining that both the pressure output is closed and the pressure of the cooking vessel is less than the optimal pressure, activating, automatically by the controller, a filter pump configured to supply air from a drain pan into the cooking vessel to help build pressure in the cooking vessel;
deactivating, automatically by the controller, the filter pump when the pressure within the cooking vessel is equal to or greater than the optimal pressure;
determining, automatically by the controller, whether a maximum pump time for the filter pump is exceeded after activating the filter pump and when the pressure within the cooking vessel is less than the optimal pressure;
deactivating, automatically by the controller, the filter pump in response to determining that the maximum pump time is exceeded;
wherein prior to activating the filter pump:
the filter pump is not activated, automatically by the controller, in response to a comparison that the pressure of the cooking vessel is equal to or greater than the optimal pressure, and
the filter pump is activated, automatically by the controller, in response to a comparison that the pressure of the cooking vessel is less than the optimal pressure;

in response to determining that the pressure output is open, determining, automatically by the controller, whether a predetermined amount of time remains until an end of the cooking cycle or whether the cooking cycle is cancelled;
performing, automatically by the controller, one of the following actions based on determining whether the predetermined am

Assignees

• Henny Penny Corp

Inventors

• Winter David B
• Mercer Gary L
• Landwehr Tim A
• Lambert Keith

Classifications

• A47J27/0802

  Control mechanisms for pressure-cookers · CPC title

• A47J27/0817

  Large-capacity pressure cookers; Pressure fryers · CPC title

• A47J37/1223 Primary

  with means for filtering the frying liquid · CPC title

• A23L5/11

  using oil · CPC title

• A47J37/1266

  Control devices, e.g. to control temperature, level or quality of the frying liquid · CPC title