GB2046085A - Filtering contaminants from a frying etc. fluid - Google Patents
Filtering contaminants from a frying etc. fluid Download PDFInfo
- Publication number
- GB2046085A GB2046085A GB8000509A GB8000509A GB2046085A GB 2046085 A GB2046085 A GB 2046085A GB 8000509 A GB8000509 A GB 8000509A GB 8000509 A GB8000509 A GB 8000509A GB 2046085 A GB2046085 A GB 2046085A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- fluid
- receptacle
- support means
- heat
- Prior art date
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 58
- 239000000356 contaminant Substances 0.000 title claims abstract description 15
- 238000001914 filtration Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 2
- 238000010411 cooking Methods 0.000 abstract description 17
- 239000004519 grease Substances 0.000 abstract description 7
- 239000008162 cooking oil Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 235000019737 Animal fat Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/12—Deep fat fryers, e.g. for frying fish or chips
- A47J37/1223—Deep fat fryers, e.g. for frying fish or chips with means for filtering the frying liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/23—Supported filter elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Frying-Pans Or Fryers (AREA)
- Gas Separation By Absorption (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Food-Manufacturing Devices (AREA)
- Filtration Of Liquid (AREA)
Abstract
In a deep frying cooking process, the cooking takes place within the confines of a filter element 40 immersed in the cooking oil or grease in a receptacle 2 and the filter element continually filters the fluid medium to trap contaminants suspended therein, owing to the turbulance imparted to the fluid by the application of heat. The apparatus includes a straining basket 80 located within the element 40. The said element is typically formed as a bag but may exclude integral stiffening portions to allow it to stand upright instead of being supported by the rim of the receptacle 20. <IMAGE>
Description
SPECIFICATION
Filtering contaminants from a fluid
This invention relates to a method and apparatus for filtering contaminants from a fluid.
In both domestic and commercial deep frying cooking processes, large quantities of cooking oil or grease are consumed. During the cooking process the oil or grease becomes contaminated with water, fatty acids, dirt, carbon particles, food particles and other undesirable elements. Since the normal cooking temperatures employed in a deep frying process range from 3250 Farenheit and above, the presence of contaminants in the oil cause it to smoke, turn black and chemically break down into its constituents.
One of the ways that large commercial establishments have sought to avoid this problem has been to periodically circulate the cooking oil through a complex filtration system, which is expensive to install and maintain.
Domestic users and commercial establishments which do not employ the circulating filtration system are faced with no other alternative than to pour the contaminated grease or oil through a cloth or fabric material or to dispose of the contaminated oil or grease all together and replace it with a fresh supply. The disposal of the cooking fluid is very expensive, due to the cost per volume of cooking oil and grease and the amounts required. The pouring of the fluid through a filter material is also a messy and sometimes hazardous task due to the temperature of the fluid, its weight and volume and the slippery characteristics it imparts to surfaces with which it has come into contact.
An object of the present invention is to provide an inexpensive, safe, easy to use filtration system which will substantially reduce the amount of cooking fluid consumed in both domestic and commercial deep frying operations.
Another object is the provision of a filtration system which does not require a complex circulation system to filter the cooking fluid, and which can be adapted for use in standard deep frying containers with little or no modifications required.
According to one aspect of the present invention I provide a method of filtering contaminants from a fluid to which heat is applied to cook material immersed therein; comprising the steps of:
placing a volume of fluid in a receptacle;
supporting a bag shaped filter in the receptacle with the open end of the bag extending above the level of the fluid;
inserting uncooked material into the interior of the bag shaped filter; and
applying heat to the receptacle to heat the fluid to cook the material and create turbulence in the fluid to circulate the fluid continuously through the filter to trap contaminants suspended thereon.
According to another aspect of the invention I provide a filter apparatus for use in a fluidcontaining receptacle to which heat is applied to cook material in said fluid comprising an openended bag shaped filter for insertion in said receptacle; and support means to maintain the open end of the filter above the level of fluid in the receptacle.
The method and apparatus of the invention involve the use of a filtration system which promotes flow through the filter in one direction upon insertion into the cooking fluid, flow through the filter in the opposite direction upon removal from cooking fluid and flow in both directions during the cooking process.
Referring to the accompanying drawings:~
Figure 1 is an exploded perspective view of one embodiment of the invention showing the nesting relationship of the elements which are employed in practicing the invention;
Figure 2 is a perspective view of the filter and support frame of Figure 1 in the assembled - relationship;
Figure 3 is a cross sectional view of the filter and support frame taken through line 3-3 of
Figure 2;
Figure 4 is a cross section view of the filter in use prior to withdrawal from the fluid reservoir; and
Figure 5 is a cross sectional view of a modified version of the preferred embodiment showing the cooperation of the basket strainer frame handle and hook, and the flanged shoulder of the fluid reservoir to suspend the filter in the drain position.
In the drawings, like reference numerals designate identical or corresponding parts throughout the several views, Figure 1 shows the cooking and filtration system of the instant invention designated generally as 10. The elements which comprise the system include a fluid reservoir or receptacle 20, a filter element 40, a support frame 60 and a straining basket 80.
The fluid reservoir 20 is preferably fabricated from stainless steel and has a flanged outwardly depending shoulder portion 21 surrounding the downwardly depending reservoir portion 22.
The support frame 60 comprises a plurality of vertical 61 and horizontal 62 frame members which form an open basket structure which conforms to the interior configuration of the reservoir portion 22 of the fluid reservoir 20. The vertical frame members 61 are curved outwardly at their uppermost ends (as at 63) to form an outwardly depending lip 64 around the upper periphery of the support frame 60. The support frame 60 is also provided with a plurality of pivoted handles 65 whose purpose and function will be explained further on.
Releasably secured to the periphery of the support frame 60 is a filter 40 in the form of an open-ended bag or envelope. The filtration 40 is secured to the outwardly lip 64 of the support frame in any suitable manner, such as by clips, springs, draw strings, prongs, stays, stiffening members etc.
The filter 40 of the preferred embodiment is mounted on the exterior of the support frame, and can be fabricated as a non-woven res.in-bonded fabric composed of rayon fibres and binders which is manufactured by Kendall under the numerical designation 143-038 and which complies with the Food and Drug Administration regulations regarding filtration of hot edible oils and fats; however, any filter material which ppssesses the same or similar properties as the Kendall filter whether woven or non-woven would be a suitable substitute.
The filtration system is operated as follows: prior to cooking foodstuffs, the fluid reservoir 20 is filled with cooking oil or melted animal fat, the filter 40 is releasably secured to the support frame 60 and the combined support frame and filter are lowered via handles 65 into the fluid reservoir, which results in the fluid 90 being forced in one of two directions through the filter material. The downward travel of the combined support and filter into the reservoir terminates when the outwardly depending lip 64 around the upper periphery of the support frame 60 contacts the flanged shoulder portion 21 of the fluid reservoir.
In this position the support frame suspends the filter in close proximity and adjacent to the interior walls of the reservoir. The foodstuffs or items to be cooked are then inserted into the interior of the bag shaped filter, and heat is applied to the receptacle to heat the fluid to cook the material contained within the confines of the filter. The turbulence created by the application of heat to the fluid forces the fluid in both directions through the filter material, and when the filter is removed from the reservoir the fluid is forced in the other of two directions through the filter material.
The advantages of this method and apparatus should by now be obvious, since the initial insertion of the filter into the reservoir performs a preliminary filtration of any contaminants present in a substantial proportion of the reservoir's fluid volume, and when the food stuff is placed within the internal confines of the filter and heat is applied to accomplish the cooking process, fluid turbulence is an inherent by-product which forces the contaminated oil or grease repeatedly through the filter, so that oil which passes from within the confines of the filter and support, is filtered once on egress and again on ingress.This circulating filtration continues for the duration of the individual cooking cycle and for succeeding cycles until the filter has to be replaced; whereupon, the removal of the filter and support forces the fluid by gravity in the other of two directions through the filter for the final time to trap any contaminants which might have remained suspended within the confines of the interior of the filter during its useful life.
As can be seen by reference to Figure 5, the pivoting handles 65 of the support frame are designed to cooperate with the flanged shoulder 21 of the fluid reservoir to suspend the frame and filter above the reservoir portion to allow drainage of residual fluid from within the confines of the filter. When this has been accomplished, the filter is removed and disposed of and a new filter is secured to the support frame and the method is
repeated.
Positioning the filter on the exterior of the
support frame facilitates removal of the used filter through the releasable securing means and allows
any residual fluid remaining on the support frame to be deposited on the interior of the new filter as it is being placed on the support.
In addition to the modification shown in Figure
5 the modifications are, of course, possible. The
need for a specially designed support frame can be obviated and in one version the filter is releasably secured directly to the exterior of a standard straining basket normally used to suspend foodstuffs in the cooking fluid during cooking. In another version the filter has integral stiffening portions which allow it to stand upright in the fluid reservoir by itself and in still another version the filter 40 is releasably secured to the fluid reservoir 20.
In all these embodiments the food is cooked within the confines of the filter element, and the inherent fluid turbulence created by the application of heat continuously circulates the fluid through the filter to trap contaminants therein.
Claims (10)
1. A method of filtering contaminants from a fluid to which heat is applied to cook material immersed therein; comprising the steps of:
placing a volume of fluid in a receptacle;
supporting a bag shaped filter in the receptacle with the open end of the bag extending above the level of the fluid;
inserting uncooked material into the interior of the bag shaped filter; and
applying heat to the receptacle to heat the fluid to cook the material and create turbulence in the fluid to circulate the fluid continuously through the filter to trap contaminants suspended thereon.
2. A method of filtering contaminants from a fluid as in Claim 1 further comprising the steps of,
removing the cooked material from the filter;
raising the entire filter above the level of the fluid to allow the fluid and contaminants within the interior of the filter to drain through the filter via gravity into the receptacle; and
disposing of the used filter.
3. A method of filtering contaminants from a fluid substantially as herein described.
4. A filter apparatus for use in a fluid-containing receptacle to which heat is applied to cook material in said fluid comprising an open-ended bag shaped filter for insertion in said receptacle; and support means to maintain the open end of the filter above the level of fluid in the receptacle.
5. A filter apparatus according to Claim 4, wherein, said filter is removably secured to said support means.
6. A filter apparatus according to Claim 5 wherein, said filter is removably secured to the exterior of said support means.
7. A filter apparatus according to Claim 6 wherein, said support means is positioned inside the bag shaped filter.
8. A filter apparatus according to Claim 4 or 5, wherein said support means is formed by said fluid filled receptacle.
9. A filter apparatus according to Claim 4 wherein, said support means forms an integral part of the filter.
10. An improved filter substa*tially as herein described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1252379A | 1979-02-15 | 1979-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2046085A true GB2046085A (en) | 1980-11-12 |
Family
ID=21755366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8000509A Withdrawn GB2046085A (en) | 1979-02-15 | 1980-01-08 | Filtering contaminants from a frying etc. fluid |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS55109412A (en) |
| AR (1) | AR222853A1 (en) |
| AU (1) | AU5554080A (en) |
| BE (1) | BE881214A (en) |
| BR (1) | BR8000503A (en) |
| DE (1) | DE3001492A1 (en) |
| DK (1) | DK17880A (en) |
| ES (1) | ES8106649A1 (en) |
| FI (1) | FI800423A (en) |
| FR (1) | FR2448928A1 (en) |
| GB (1) | GB2046085A (en) |
| GR (1) | GR69730B (en) |
| IT (1) | IT1126911B (en) |
| LU (1) | LU82097A1 (en) |
| NL (1) | NL8000461A (en) |
| NO (1) | NO794247L (en) |
| PT (1) | PT70690A (en) |
| SE (1) | SE8000333L (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2230179B (en) * | 1987-11-03 | 1991-09-18 | Harry Matsoukas | Cooking filter |
| GB2255002A (en) * | 1990-01-29 | 1992-10-28 | Kenwood Marks Ltd | Deep fryers |
| EP0587300A1 (en) | 1992-08-12 | 1994-03-16 | Morphy Richards Limited | Fryers |
| GB2307460A (en) * | 1995-10-26 | 1997-05-28 | Stella Hermoine Howell | Receptacle for oil and fat |
| AU722423B2 (en) * | 1996-01-31 | 2000-08-03 | Iain Geoffrey Winfred Horne | A tray |
| GB2427154A (en) * | 2005-06-14 | 2006-12-20 | Adam Yaxley | A filtering element |
| GB2430862A (en) * | 2005-10-05 | 2007-04-11 | Universal Filtration Solutions | Cooking oil filtration assembly and method |
| WO2012048381A1 (en) * | 2010-10-15 | 2012-04-19 | Breville Pty Limited | Improved fryer with removable filter |
| US10470611B2 (en) * | 2016-07-19 | 2019-11-12 | Azmie Khalaf Madanat | Disposable frying oil filter and filter securing device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6613186A (en) * | 1985-12-06 | 1987-06-11 | Oil Process Systems, Inc. | Filter system |
| FR2652758B1 (en) * | 1989-10-11 | 1992-04-17 | Desjoyaux Catherine | DEVICE FOR FILTERING A LIQUID, PARTICULARLY FOR A POOL. |
| ES2069456B1 (en) * | 1992-02-05 | 1997-08-16 | Montero Aleu Francisco Jose | DISPOSABLE COVER FOR FOOD FRYER BOWLS. |
| DE4342727C1 (en) * | 1993-12-15 | 1995-04-13 | Frifri Aro Gmbh | Deep-fat fryer |
| CN106108727B (en) * | 2016-08-31 | 2018-12-18 | 李璐 | A kind of suspension type chafing dish fishing glassware |
| CN106108681B (en) * | 2016-08-31 | 2018-11-27 | 李璐 | A kind of folding chafing dish fishing glassware |
| CN109620009B (en) * | 2019-01-17 | 2020-10-02 | 陈奕朗 | Food processor capable of automatically decompressing and filtering |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2071467A (en) * | 1936-06-17 | 1937-02-23 | Harry H Sellas | Grease filter |
| US4052319A (en) * | 1975-11-03 | 1977-10-04 | Bernard Friedman | Cooking oil filtration |
| FR2342697A1 (en) * | 1976-03-05 | 1977-09-30 | Remon Paul | Filter basket for oil cooking fat - has fine mesh base with stools supporting food panier and is removed after panier by its own handle |
-
1979
- 1979-11-20 GR GR60925A patent/GR69730B/el unknown
- 1979-12-21 NO NO794247A patent/NO794247L/en unknown
- 1979-12-26 ES ES487263A patent/ES8106649A1/en not_active Expired
-
1980
- 1980-01-08 GB GB8000509A patent/GB2046085A/en not_active Withdrawn
- 1980-01-14 PT PT70690A patent/PT70690A/en unknown
- 1980-01-15 SE SE8000333A patent/SE8000333L/en unknown
- 1980-01-16 DK DK17880A patent/DK17880A/en not_active Application Discontinuation
- 1980-01-17 DE DE19803001492 patent/DE3001492A1/en not_active Withdrawn
- 1980-01-17 BE BE0/199017A patent/BE881214A/en unknown
- 1980-01-21 LU LU82097A patent/LU82097A1/en unknown
- 1980-01-24 FR FR8001490A patent/FR2448928A1/en active Pending
- 1980-01-24 NL NL8000461A patent/NL8000461A/en not_active Application Discontinuation
- 1980-01-25 AR AR279753A patent/AR222853A1/en active
- 1980-01-25 BR BR8000503A patent/BR8000503A/en unknown
- 1980-01-30 IT IT47758/80A patent/IT1126911B/en active
- 1980-02-05 JP JP1294780A patent/JPS55109412A/en active Pending
- 1980-02-12 FI FI800423A patent/FI800423A/en not_active Application Discontinuation
- 1980-02-14 AU AU55540/80A patent/AU5554080A/en not_active Abandoned
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2230179B (en) * | 1987-11-03 | 1991-09-18 | Harry Matsoukas | Cooking filter |
| GB2255002A (en) * | 1990-01-29 | 1992-10-28 | Kenwood Marks Ltd | Deep fryers |
| GB2255002B (en) * | 1990-01-29 | 1993-12-15 | Kenwood Marks Ltd | Deep fryers |
| EP0587300A1 (en) | 1992-08-12 | 1994-03-16 | Morphy Richards Limited | Fryers |
| GB2307460A (en) * | 1995-10-26 | 1997-05-28 | Stella Hermoine Howell | Receptacle for oil and fat |
| GB2307460B (en) * | 1995-10-26 | 2000-04-26 | Stella Hermoine Howell | A receptacle for oil or fat |
| AU722423B2 (en) * | 1996-01-31 | 2000-08-03 | Iain Geoffrey Winfred Horne | A tray |
| GB2427154A (en) * | 2005-06-14 | 2006-12-20 | Adam Yaxley | A filtering element |
| GB2427154B (en) * | 2005-06-14 | 2010-05-12 | Adam Yaxley | A filtering element |
| GB2430862A (en) * | 2005-10-05 | 2007-04-11 | Universal Filtration Solutions | Cooking oil filtration assembly and method |
| WO2012048381A1 (en) * | 2010-10-15 | 2012-04-19 | Breville Pty Limited | Improved fryer with removable filter |
| CN103298348A (en) * | 2010-10-15 | 2013-09-11 | 布瑞威利私人有限公司 | Improved fryer with removable filter |
| US20130327225A1 (en) * | 2010-10-15 | 2013-12-12 | Breville Pty Limited | Fryer with Removable Filter |
| AU2011316488B2 (en) * | 2010-10-15 | 2015-06-04 | Tristan Brega | Improved fryer with removable filter |
| US10470611B2 (en) * | 2016-07-19 | 2019-11-12 | Azmie Khalaf Madanat | Disposable frying oil filter and filter securing device |
Also Published As
| Publication number | Publication date |
|---|---|
| ES487263A0 (en) | 1981-09-01 |
| BR8000503A (en) | 1980-10-14 |
| DE3001492A1 (en) | 1980-09-04 |
| LU82097A1 (en) | 1980-04-23 |
| IT1126911B (en) | 1986-05-21 |
| BE881214A (en) | 1980-05-16 |
| AR222853A1 (en) | 1981-06-30 |
| AU5554080A (en) | 1980-08-21 |
| FI800423A (en) | 1980-08-16 |
| ES8106649A1 (en) | 1981-09-01 |
| FR2448928A1 (en) | 1980-09-12 |
| NL8000461A (en) | 1980-08-19 |
| SE8000333L (en) | 1980-08-16 |
| JPS55109412A (en) | 1980-08-22 |
| PT70690A (en) | 1980-02-01 |
| DK17880A (en) | 1980-08-16 |
| IT8047758A0 (en) | 1980-01-30 |
| GR69730B (en) | 1982-07-09 |
| NO794247L (en) | 1980-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |