GB2151771A - Cooking apparatus - Google Patents

Cooking apparatus Download PDF

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Publication number
GB2151771A
GB2151771A GB08418214A GB8418214A GB2151771A GB 2151771 A GB2151771 A GB 2151771A GB 08418214 A GB08418214 A GB 08418214A GB 8418214 A GB8418214 A GB 8418214A GB 2151771 A GB2151771 A GB 2151771A
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GB
United Kingdom
Prior art keywords
working
water
cooking
aperture
water jacket
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.)
Granted
Application number
GB08418214A
Other versions
GB8418214D0 (en
GB2151771B (en
Inventor
Fergus Yuen Tung Liu
Tommy Kee Wai Cheung
Original Assignee
Fergus Yuen Tung Liu
Tommy Kee Wai Cheung
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to GB838334068A priority Critical patent/GB8334068D0/en
Application filed by Fergus Yuen Tung Liu, Tommy Kee Wai Cheung filed Critical Fergus Yuen Tung Liu
Publication of GB8418214D0 publication Critical patent/GB8418214D0/en
Publication of GB2151771A publication Critical patent/GB2151771A/en
Application granted granted Critical
Publication of GB2151771B publication Critical patent/GB2151771B/en
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C13/00Stoves or ranges with additional provisions for heating water

Abstract

Cooking apparatus of the kind having a working surface (1) and a number of apertures beneath which respective gas burners (4) are provided for heating respective 'Woks'. So that the gas can be used in an efficient manner, a water jacket (16) surrounds each aperture, connections being provided to and from the apparatus for the connection of pipes through which water can be circulated through the water jacket (16) and through radiators for space heating purposes, and there being an upstanding rim around each aperture and an upstanding rim (28) around the entire working surface, with an outlet drain at the lowest part of the working surface. <IMAGE>

Description

SPECIFICATION Cooking apparatus The invention relates to cooking apparatus of the kind including a working surface having a number of apertures beneath which respective gas burners are provided, individual controls being provided for the various gas burners. Cooking apparatus of this kind is generally found in Chinese restaurants where a so-called "Wok", that is to say a dished frying pan, is heated at an appropriate aperture in the working surface. Such frying pans are of varying sizes; consequently, the apertures in the working surface of the apparatus may be of various sizes, being of either a small size or a relatively larger size.
This kind of cooking apparatus is well known and very popular with the proprietors of Chinese restaurants. However, items of cooking apparatus of this kind do have one particular drawback, this being that they use a great deal of gas and for this reason are expensive to operate because of the present high cost of fuel. The object of the invention is to provide a cooking apparatus of the kind described which will use gas in a more efficient manner.
According to the invention, there is provided cooking apparatus of the kind described, the apparatus being formed in such a way that there is provided beneath the working surface and surrounding each aperture therein a water jacket, connections being provided to and from the apparatus for the connection of pipes through which water can be circulated through the water jacket for space heating purposes, the working surface, at least in use of the apparatus, being slightly sloped so that an air lock cannot form within the water jacket, there being an upstanding rim around each aperture and an upstanding rim around the entire working surface, and there being formed an outlet drain at the lowest part of the working surface, the arrangement being such that the working surface of the apparatus can be flushed with water from time to time.A water tap will preferably be positioned above an uppermost part of the working surface to facilitate the operation of flushing the working surface with water from time to time. The water jacket surrounding each aperture may be formed by making the work top of double-skin construction, the apertures in the work top being formed by respective cylindrical sleeves which extend through the upper and lower plates of the work top and through the space between said upper and lower plates, and in this case, the cylindrical sleeves will preferably project above the level of the upper plate to form the upstanding rims around the respective apertures in the working surface.Alternatively, the water jacket surrounding each aperture may be formed by surrounding the respective cylindrical sleeves defining the apertures with somewhat larger diameter sleeves so that there is, in effect, a water jacket of annular form around each aperture, the annular water jackets being connected together by suitable pipework.
In this case, the pipework connecting the annular water jackets may be such that all the water jackets are connected to a common inlet pipe at their lower ends and to a common outlet pipe at their upper ends. A grease extraction device will preferably be provided in the waste outlet.
In order that the invention may be fully understood and readily carried into effect, the same will now be described, by way of example only, with reference to the accompanying drawings, of which: Figure 1 is a front view of cooking apparatus embodying the invention, Figure 2 is a plan view, Figure 3 is a sectional view on the line 3-3 in Figure 2, and Figures 4, 5 and 6 are views respectively similar to Figures 1, 2 and 3 but illustrating a somewhat different embodiment of the invention.
Referring now to Figures 1 to 3 of the drawings, the cooking apparatus there illustrated has a working surface 1 having a number of cylindrical apertures 2 beneath which respective gas burners 4 are provided, individual controls 6 being provided along the front of the apparatus for the various gas burners. The apparatus is supported on legs 8 and at its rear has an upstanding "splashback" wall 10 with a shelf 12 on which various containers (not shown) for holding spices and other cooking ingredients can be placed. Apparatus of this general kind is well known and often found in Chinese restaurants where a so-called 'Wok', that is to say a dished frying pan, may be heated at an appropriate aperture in the working surface as shown in Figure 3.The arrangement is such that the flames from the gas burner beneath it play against the underside of the 'Wok' but it is inevitable that the flame and the heat from the flame is caused to spread a good deal and to heat the surrounding work top.
Referring now in particular to Figure 3, it will be seen that the work top of the apparatus has been made of double-skin construction, that is to say by steel plates 14 and 16, the apertures in the work top being formed by respective cylindrical sleeves 18 which extend through the upper and lower plates and through the space between said plates.
There is thus formed a water jacket between the two plates and surrounding the apertures 2 therein. Respective connections 20 and 22 (see Figure 2) are provided at diagonally opposite corners of the apparatus into the water jacket, the arrangement being such that water which has become heated in the work top can be circulated through a hot cylinder and through hot water radiators in the public rooms of the restaurant for space heating purposes.
Although not readily apparent in the drawings, the working surface slopes very slightly along a diagonal line between the connections 20 and 22. At the lowest point of the working surface and near the connection 20 there is provided a drain aperture 24 from which water can drain from the working surface. Also not readily apparent in the drawings is the fact that the connection 22 partly intrudes into the thickness of the upper plate of the work top so that an air lock cannot possibly form at that point.
The cylindrical sleeves 18 which extend through the upper and lower plates of the work top project a small distance above the working surface to provide an upstanding rim around each aperture. As shown in Figure 3, each sleeve is provided around the upper portion which stands proud of the working surface, with a series of holes 26 through which the flames from the gas burner beneath the respective aperture can play against the radially outer portion of a 'Wok' positioned above that aperture. There is also provided an upstanding rim 28 around the entire working surface.
The arrangement is such that a good deal of the heat normally wasted when heating a 'Wok' or other utensil on cooking apparatus of this kind is now put to good use; the amount of heat which can be recovered for space heating may be such that no other space heaters are required. Even if other space heaters are required they will be fewer in number and/or be required to operate for shorter periods of time than before. Consequently, the overall costs of heating for a restaurant using cooking apparatus embodying the invention can be expected to be considerably reduced. By virtue of the fact that the working surface is slightly sloped, and the fact that the apertures each have an upstanding rim and the entire working surface has an upstanding rim, the working surface can be flushed with water from time to time.The slope of the working surface also ensures that air locks cannot form beneath it which would create "hot spots" and result in buckling of the top plate. The amount of slope of the working surface is not critical, but it has been found that a rise of about 20 m.m. across the diagonal width of the working surface has been suitable, the overall length of the apparatus being about 6 feet. (Such a very small amount of slope can be brought about by simply adjusting the effective length of the legs appropriately on installation of the apparatus, the legs being shown to have screwthreaded adjustable feet for this pur pose).
Referring now to Figures 4 to 6 of the drawings, there is there illustrated a somewhat different embodiment of the invention, the main difference being that the work top of the apparatus is in this case of single skin construction, being formed by a single steel plate 14. The water jacket surrounding each aperture is formed by surrounding the respective cylindrical sleeves 18 defining the apertures with somewhat larger diameter sleeves, and closing the ends of the annular chambers thus formed, so that there is, in effect, a water jacket of annular form around each aperture. The annular water jackets are connected together by suitable pipework (not shown) this preferably being such that all the water jackets are connected to a common inlet pipe at their lower ends and to a common outlet pipe at their upper ends.
As shown in Figures 5 and 6, a further difference between this and the first described embodiment is that at one end of the apparatus there has been added a rectangular aperture 3 beneath which an elongate gas burner 5 is provided. The aperture 3 is of double skinned construction and the water jacket thus formed is connected to the pipework by which the annular water jackets are connected together.
As shown in Figures 4 and 6, the "splashback" wall 10 has been provided with a pair of spaced apart water taps 30, these being a useful further aid to persons using the apparatus. A water spray nozzle, indicated 31 in Figure 6, is provided so that a constant trickle of water can be maintained across the surface of the work top to carry food debris towards the drain aperture 24. Also shown in Figure 5 is the manner in which a so-called grease extraction device generally indicated 33 is located in a drain pipe leading from the drain aperture 24 through which water can drain from the working surface (although strictly speaking such a device does not form a part of the present apparatus).
The apparatus is such that it can be used like the first described embodiment for heating radiators for space heating. However, this arrangement has the advantage of a reduced water capacity and consequently in being quicker to heat up to produce hot water for space heating. It is also found that distortion of the work top is less than that of the first described embodiment.
Various other modifications may be made. For example, the first described embodiment of the apparatus may have apertures of at least two different sizes to suit different sizes of 'Wok'.

Claims (8)

1. Cooking apparatus of the kind described, the apparatus being formed in such a way that there is provided beneath the working surface and surrounding each aperture therein a water jacket, connections being provided to and from the apparatus for the connection of pipes through which water can be circulated through the water jacket for space heating purposes, the working surface, at least in use of the apparatus, being slightly sloped so that an air lock cannot form within the water jacket, there being an upstanding rim around each aperture and an upstanding rim around the entire working surface, and there being formed an outlet drain at the lowest part of the working surface, the arrangement being such that the working surface of the apparatus can be flushed with water from time to time.
2. Cooking apparatus according to claim 1, in which a water tap is positioned above an uppermost part of the working surface to facilitate the operation of flushing the working surface with water from time to time.
3. Cooking apparatus according to either one of the preceding ciaims, in which the water jacket surrounding each aperture is formed by making the work top of double-skin construction, the apertures in the work top being formed by respective cylindrical sleeves which extend through the upper and lower plates of the work top and through the space between said upper and lower plates.
4. Cooking apparatus according to claim 3, in which the cylindrical sleeves project above the level of the upper plate to form the upstanding rims around the respective apertures in the working surface.
5. Cooking apparatus according to either one of claims 1 and 2, in which the water jacket surrounding each aperture is formed by surrounding the respective cylindrical sleeves defining the apertures with somewhat larger diameter sleeves so that there is, in effect, a water jacket of annular form around each aperture, the annular water jackets being connected together by suitable pipework.
6. Cooking apparatus according to claim 5, in which the pipework connecting the annular water jackets is such that all the water jackets are connected to a common inlet pipe at their lower ends and to a common outlet pipe at their upper ends.
7. Cooking apparatus according to any one of the preceding claims, in which a grease extraction device is provided.
8. Cooking apparatus, constructed, arranged and adapted to be used substantially as hereinbefore described with reference to and as illustrated by Figures 1 to 3 or Figures 4 to 6 of the accompanying drawings.
GB08418214A 1983-12-21 1984-07-17 Cooking apparatus Expired GB2151771B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB838334068A GB8334068D0 (en) 1983-12-21 1983-12-21 Cooking apparatus

Publications (3)

Publication Number Publication Date
GB8418214D0 GB8418214D0 (en) 1984-08-22
GB2151771A true GB2151771A (en) 1985-07-24
GB2151771B GB2151771B (en) 1987-06-10

Family

ID=10553636

Family Applications (2)

Application Number Title Priority Date Filing Date
GB838334068A Pending GB8334068D0 (en) 1983-12-21 1983-12-21 Cooking apparatus
GB08418214A Expired GB2151771B (en) 1983-12-21 1984-07-17 Cooking apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB838334068A Pending GB8334068D0 (en) 1983-12-21 1983-12-21 Cooking apparatus

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GB (2) GB8334068D0 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AP119A (en) * 1988-11-14 1991-02-22 Ian Vere Hodgson Combined cooker and water heater.
EP0643268A1 (en) * 1993-09-08 1995-03-15 Angelo Amorino Device for the recovery of thermal energy for application to a gas cooker
EP1118817A1 (en) * 2000-01-20 2001-07-25 Tekno-Lam S.A. Gas range
WO2003058128A1 (en) * 2001-12-28 2003-07-17 P.F. Chang's China Bistro, Inc. Wok cooking apparatus
CN100516654C (en) * 2004-09-21 2009-07-22 西安科弘厨房工程设备有限责任公司 Fuel oil (gas) frying stove with waste heat utilizing device
CN101846335A (en) * 2009-05-31 2010-09-29 张维平 High-efficiency cooking and heating furnace
CN102192547A (en) * 2011-05-23 2011-09-21 董玉芬 Energy-saving ring for gas stove, and gas stove using same
WO2013033871A1 (en) * 2011-09-09 2013-03-14 Lei Canbo Stove support
CN103322597A (en) * 2013-07-10 2013-09-25 顾加华 Hearth for generating steam by utilizing waste heat

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105841502B (en) * 2016-05-24 2018-04-24 江苏神工灶具有限公司 Utilize the cooking stove of waste heat for generating steam

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB264200A (en) * 1926-06-04 1927-01-20 John Clark Carnegie Improvements in hot-water systems and apparatus
GB292638A (en) * 1927-02-21 1928-06-21 John Alexander Murray Improvements in gas and like cooking stoves
GB309900A (en) * 1928-04-17 1929-09-12 Paul Braach Improvements relating to the utilisation of the hot gases in gas cooking stoves
GB504787A (en) * 1937-10-27 1939-04-27 Alfred Hocking A combined coal and gas stove with hot water apparatus
GB921745A (en) * 1959-07-22 1963-03-20 Wing Keung Poon A combined liquid fuel stove and water heater
GB2044439A (en) * 1979-03-20 1980-10-15 Wong S T Domestic cooker additionally used for heating water
GB2099574A (en) * 1981-04-06 1982-12-08 Stewart Duncan Ross Portable stove for cooking and water heating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB264200A (en) * 1926-06-04 1927-01-20 John Clark Carnegie Improvements in hot-water systems and apparatus
GB292638A (en) * 1927-02-21 1928-06-21 John Alexander Murray Improvements in gas and like cooking stoves
GB309900A (en) * 1928-04-17 1929-09-12 Paul Braach Improvements relating to the utilisation of the hot gases in gas cooking stoves
GB504787A (en) * 1937-10-27 1939-04-27 Alfred Hocking A combined coal and gas stove with hot water apparatus
GB921745A (en) * 1959-07-22 1963-03-20 Wing Keung Poon A combined liquid fuel stove and water heater
GB2044439A (en) * 1979-03-20 1980-10-15 Wong S T Domestic cooker additionally used for heating water
GB2099574A (en) * 1981-04-06 1982-12-08 Stewart Duncan Ross Portable stove for cooking and water heating

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AP119A (en) * 1988-11-14 1991-02-22 Ian Vere Hodgson Combined cooker and water heater.
EP0643268A1 (en) * 1993-09-08 1995-03-15 Angelo Amorino Device for the recovery of thermal energy for application to a gas cooker
EP1118817A1 (en) * 2000-01-20 2001-07-25 Tekno-Lam S.A. Gas range
WO2003058128A1 (en) * 2001-12-28 2003-07-17 P.F. Chang's China Bistro, Inc. Wok cooking apparatus
US6718967B2 (en) 2001-12-28 2004-04-13 P. F. Chang's China Bistro, Inc. Wok cooking apparatus
CN100516654C (en) * 2004-09-21 2009-07-22 西安科弘厨房工程设备有限责任公司 Fuel oil (gas) frying stove with waste heat utilizing device
CN101846335A (en) * 2009-05-31 2010-09-29 张维平 High-efficiency cooking and heating furnace
CN102192547A (en) * 2011-05-23 2011-09-21 董玉芬 Energy-saving ring for gas stove, and gas stove using same
WO2013033871A1 (en) * 2011-09-09 2013-03-14 Lei Canbo Stove support
CN103322597A (en) * 2013-07-10 2013-09-25 顾加华 Hearth for generating steam by utilizing waste heat

Also Published As

Publication number Publication date
GB8418214D0 (en) 1984-08-22
GB8334068D0 (en) 1984-02-01
GB2151771B (en) 1987-06-10

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PCNP Patent ceased through non-payment of renewal fee