EP3506805A1 - Cooking apparatus with water circulation system - Google Patents
Cooking apparatus with water circulation systemInfo
- Publication number
- EP3506805A1 EP3506805A1 EP17748781.6A EP17748781A EP3506805A1 EP 3506805 A1 EP3506805 A1 EP 3506805A1 EP 17748781 A EP17748781 A EP 17748781A EP 3506805 A1 EP3506805 A1 EP 3506805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steamer
- cooking apparatus
- internal pot
- water
- rice
- 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- Withdrawn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
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
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
-
- 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
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
- A47J2027/043—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels for cooking food in steam
Definitions
- the present invention relates to the field of cooking equipment and in particular to a cooking apparatus.
- the electric rice cookers of the prior art are equipped with a water tank, and water is pumped from the water tank into the internal pot of the rice cooker.
- the base of the internal pot is equipped with a water discharge hole.
- water is sprayed downwards and towards the interior of the internal pot to wash the rice contained within the pot.
- the water then flows out from the water discharge hole at the base of the internal pot into the water drain at the bottom of the pot.
- a portion of the starch and sugar content of the rice is washed out together with the water.
- the water discharge hole at the base of the internal pot will be closed. Thereafter, a specific amount of water will be added into the internal pot to cook the rice.
- the electric rice cookers of the prior art must be equipped with a water tank, water discharge hole, water drain and other structures, which makes them rather complex and difficult to seal and wash.
- the main object of the present invention is to provide a cooking apparatus that is structurally simple and yet able to produce cooked rice with low sugar content.
- the present invention provides a cooking apparatus, which comprises an internal pot, a heating means, a steamer that is housed within the internal pot, as well as a water circulation system, which is connected with the internal pot and steamer to channel water from the internal pot to the steamer.
- the heating means is used to heat up the internal pot.
- the water circulation system comprises a flow directing conduit, and one end of the flow directing conduit is disposed within the internal pot, while the other end extends into the steamer.
- the external wall of the steamer is engaged with the internal pot in a sealed engagement.
- the flow directing conduit comprises: a steamer suction tube, which is connected with the steamer; a water discharge tube, which is connected to both the steamer suction tube and the steamer. Further, the steamer suction tube and the steamer is integrated in one unit.
- the cooking apparatus also comprises: an external housing, wherein both the internal pot and heating means are disposed within the external housing; a top cover, which is disposed on the external housing, and the water discharge tube is disposed on the top cover.
- the water circulation system comprises a suction pump that is provided on the flow directing conduit, and the suction pump is used to draw water from the internal pot into the steamer.
- the internal diameter of the steamer suction tube is at least 0.5mm and at most 20mm.
- the internal diameter of the steamer suction tube is at least 1 .5mm and at most 12mm.
- the water drainage hole is disposed on the bottom and/or side wall of the steamer. Further, the bottom wall of the steamer protrudes upwards such that it is higher at the center and lower at the edges. Further, the end of the flow directing conduit that extends into the steamer is equipped with a nozzle.
- the end of the flow directing conduit that extends into the steamer is equipped with a nozzle.
- H1 there is a height difference of H1 between the lowest points on the bottom walls of the internal pot and steamer, and H1 is at least 0.1 H and at most 0.8H, where H is the height of the internal pot.
- the cooking apparatus according to the present invention comprises an internal pot, a heating means, a steamer that is housed within the internal pot, as well as a water circulation system, which is connected with the internal pot and steamer.
- the heating means is used to heat up the internal pot.
- the cooking apparatus according to the present invention does not require a water discharge hole, water drain or other related structures, can have a simple structure.
- the starch and sugar contents of the rice are reduced when they are washed from the rice and enter into the rice water in the internal pot. This lowers the sugar content of the cooked rice and produces low glycemic index rice. Further, water is recycled and reused by producing steam to be used for steaming the rice from the water that was used to wash the rice.
- FIG. 1 is a schematic structural view of a cooking apparatus according to the first embodiment of the present invention.
- FIG. 2 illustrates the relative positions of the steamer and the internal pot from FIG. 1 , before the internal pot is filled with water;
- FIG. 3 illustrates the relative positions of the internal pot, steamer, flow directing conduit and suction pump from FIG. 1 , before rice comes into contact with water
- FIG. 4 illustrates the relative positions of the internal pot, steamer, flow directing conduit and suction pump from FIG. 1 during the rice washing step
- FIG. 5 is a schematic structural view of a cooking apparatus according to the second embodiment of the present invention.
- FIG. 6 illustrates the relative positions of the internal pot, steamer and flow directing conduit in FIG. 5 before the rice washing step and before rice has come into contact with water
- FIG. 7 illustrates the relative positions of the internal pot, steamer and flow directing conduit in FIG. 5 during the rice washing step
- FIG. 8 is a flowchart depicting the process of cooking rice using the cooking apparatus in FIG. 1 ;
- FIG. 9 is a flowchart depicting the process of cooking rice using the cooking apparatus in FIG. 5.
- the cooking apparatus of the present invention is structurally simple and able to fulfil the object of lowering the Glycemic index value of the cooked rice.
- the cooking apparatus of the first preferred embodiment of the present invention comprises internal pot 10, heating means 80, a water circulation system connected to internal pot 10 and steamer 20, and a steamer 20 housed within internal pot 10. Heating means 80 heats up internal pot 10.
- the cooking apparatus according to the present invention is equipped with a water circulation system to circulate water between internal pot 10 and steamer 20, which prevents wastage of water resources.
- the cooking apparatus according to the present invention is not equipped with a water tank or drainage pipe, the apparatus is structurally simpler and of smaller size, and is hence easier to use and clean. Furthermore, the cooking apparatus according to the present invention does not have the problems associated with cooking apparatuses of the prior art, such as ensuring proper sealing of the water outlet, difficulty in washing the internal pot, difficulty in placing the internal pot during usage, etc.
- the bottom wall of steamer 20 has a protruding part 23 that protrudes towards the inside of steamer 20. Specifically, the center part of the bottom wall of steamer 20 protrudes upwards such that the center of the bottom wall of steamer 20 is higher at its center and lower at the edges.
- steamer 20 can be cylindrical, pyramidal, hexahedral or other shapes.
- the lowest point of the bottom wall of internal pot 10 is at a distance H1 from the lowest point of the bottom wall of steamer 20, and H1 is at least 0.1 H and at most 0.8H, where H is the height of the internal pot 10, i.e. the distance between the bottom wall and mouth of internal pot 10.
- the distance between the lowest point of the bottom wall of steamer 20 and the mouth of internal pot 10 is H2, and H2 is at least 0.1 H and at most 0.8H, where H is the height of internal pot 10.
- steamer 20 has a water drainage hole 21 and bearing cavity 22. After rice washing, water flows into internal pot 10 via water drainage hole 21
- water drainage hole 21 is a plurality of holes. Said plurality of water drainage holes 21 are located at the bottom wall of steamer 20.
- the plurality of water drainage holes 21 are all located on protruding part 23.
- the plurality of water drainage holes 21 can also be located on the side wall of steamer 20.
- each water drainage hole 21 can be circular, elliptical, rectangular or polygonal.
- the largest dimension of water drainage hole 21 is at least 0.5mm and at most 30mm.
- the largest dimension of the irregular polygonal water drainage hole 21 is at least 0.8mm and at most 20mm.
- the water circulation system comprises flow directing conduit 30 and suction pump 40 disposed on the flow directing conduit 30.
- suction pump 40 is used to push water from internal pot 10 smoothly into steamer 20 (i.e. bearing cavity 22) to wash the rice contained within steamer 20 and to let the rice to absorb water.
- the external wall of steamer 20 is connected to the mouth of internal pot 10 in a sealed connection.
- steamer 20 and internal pot 10 need not be connected through a sealed structure.
- one end of flow directing conduit 30 is located within internal pot 10 but outside steamer 20, and the other end of flow directing conduit 30 extends into steamer 20.
- flow directing conduit 30 comprises a steamer suction tube 31 and water discharge tube 32 that is connected to steamer suction tube 31 .
- flow directing conduit 30 and steamer suction tube 31 can be integrated with steamer 20.
- the end of water discharge tube 32 that points towards steamer 20 is fitted with nozzle 33, so as to spray water evenly on the rice contained within steamer 20. This ensures that all rice grains can absorb an adequate amount of water.
- the cooking apparatus further comprises external housing 50 and top cover 60, and internal pot 10 is disposed within external housing 50; top cover 60 is fitted on top of external housing 50. Water discharge tube 32 and suction pump 40 are fitted on top cover 60.
- the cooking apparatus described above is an electric rice cooker, but can also be a microwave, electric slow cooker or electric pressure cooker.
- heating means 80 is a heating device selected from the group comprising a heating plate, heating tube, IH electromagnetic heating device and heating film.
- the water circulation system differs from that in the first preferred embodiment in that no suction pump 40 is provided on flow directing conduit 30.
- the external wall of steamer 20 is connected to the mouth of internal pot 10 in a sealed connection.
- the external wall of steamer 20 is connected to the mouth of internal pot 10 in a connection sealed with first sealing ring 70. This effectively ensures that when pressure within the separating cavity between internal pot 10 and steamer 20 rises, steam can push water smoothly into steamer 20 through flow directing conduit 30, and steam is prevented from escaping through the top of steamer 20 and the mouth of internal pot 10.
- the internal diameter of steamer suction tube 31 should be at least 0.5mm and at most 20mm.
- the internal diameter of steamer suction tube 31 is at least 1 .5mm and at most 12mm.
- the present invention provides a method for cooking rice using a cooking apparatus, wherein d ifferent steps and elements of the flowchart are represented by following references:
- the cooking apparatus can be controlled using the method described in the first specific embodiment, and the method for cooking rice using the cooking apparatus comprises the following steps: the rice washing step in which water is drawn from internal pot 10 into steamer 20 using the water circulation system to wash the rice contained within steamer 20, and thereafter, the water is directed into internal pot 10; the rice steaming step in which heating means 80 heats up internal pot 10.
- the rice washing step in which water is drawn from internal pot 10 into steamer 20 using the water circulation system to wash the rice contained within steamer 20, and thereafter, the water is directed into internal pot 10
- the rice steaming step in which heating means 80 heats up internal pot 10.
- heating means 80 heats up internal pot 10.
- rice washing is sustained up to the second preset time t2, and t2 is at least 180s and at most 2400s. Further optionally, in the rice washing step, the second preset time t2 is at least 300s and at most 1800s.
- a preheating step is performed between said rice washing and rice steaming steps, and said preheating step comprises heating the water in internal pot 10 to a first preset temperature T1 and maintaining this up to a first preset time t1 , after which, the operation of the water circulation system is stopped.
- the first preset temperature T1 is at least 10°C and at most 100°C, and the first preset time t1 is at least 20s and at most 600s.
- the first preset temperature T1 is at least 50°C°C and at most 95°C, and the first preset time t1 is at least 30s and at most 400s.
- the entire rice steaming step is divided into the preliminary rice steaming stage and the final rice steaming stage according to sequence in time.
- heating means 80 heats up internal pot 10 to the third preset time t3, after which, heating means 80 stops operating and rice steaming is allowed to continue up to the fourth preset time t4, and the preliminary rice steaming stage is repeated N1 times.
- this control method ensures that sufficient steam is produced by cooking apparatus to keep the rice in a state of high-temperature steaming, and boiling water will not mix with the foam from the rice milk and is prevented from rising and coming into contact with the rice.
- the requirements on the third preset time t3 is therefore comparatively stringent. Additionally, water is prevented from overheating and producing excessive amounts of steam that could lead to leakage of water. Spillage is thereby prevented and energy conserved.
- t3 is at least 3 seconds and at most 130 seconds
- t4 is at least 3 seconds and at most 130 seconds
- N1 is at least 2 and at most 100.
- N1 is at least 4 and at most 80.
- t5 is at least 3 seconds and at most 130 seconds
- t6 is at least 3 seconds and at most 130 seconds
- N2 is at least 2 and at most 100.
- N2 is at least 4 and at most 80.
- the on and off times of heating means 80 need not be entirely regular. This means that the heating duration and stopping duration of heating means 80 can be optimized based on the progress of cooking, such that these durations vary between cycles.
- Table 1 shows the specific method used in the rice steaming step of the cooking apparatus:
- the present invention further provides a second method for cooking rice using the cooking apparatus, wherein d ifferent steps and elements of the flowchart are represented by following references:
- the first treatment comprises: performing a preheating step before rice washing, wherein water in internal pot 10 is heated to a second preset temperature T2, and thereafter, the water circulation system of the rice washing step is activated, and this state is maintained this up to the second preset time t2.
- the second type of treatment comprises: heating up the water contained within internal pot 10 using heating means 80 as soon as the rice washing step is activated, and when temperature of the water reaches a second preset temperature T2, the rice washing step continues circulating up to a second preset time t2.
- T2 is at least 30°C and at most 95°C, and the second preset time t2 is at least 180s and at most 2400s. Further optionally, T2 is at least 60°C and at most 80°C, and the second preset time t2 is at least 300s and at most 1800s.
- the rice washing step can be followed by the rice steaming step.
- the rice steaming step in this method is identical to that in the first method, and hence the description will not be repeated here.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Commercial Cooking Devices (AREA)
- Cookers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201621006865.XU CN206213817U (en) | 2016-08-30 | 2016-08-30 | Cooker |
PCT/EP2017/069866 WO2018041535A1 (en) | 2016-08-30 | 2017-08-04 | Cooking apparatus with water circulation system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3506805A1 true EP3506805A1 (en) | 2019-07-10 |
Family
ID=58782763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17748781.6A Withdrawn EP3506805A1 (en) | 2016-08-30 | 2017-08-04 | Cooking apparatus with water circulation system |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3506805A1 (en) |
CN (1) | CN206213817U (en) |
AU (1) | AU2017320373A1 (en) |
CA (1) | CA3034461A1 (en) |
WO (1) | WO2018041535A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109793414A (en) * | 2017-11-17 | 2019-05-24 | 飞利浦(嘉兴)健康科技有限公司 | For removing device, method and the electric cooker of starch from the grain of rice |
CN108652429A (en) * | 2018-04-04 | 2018-10-16 | 小甑科技(深圳)有限公司 | A kind of automatic boiling cooker and its boiling method |
CN110811373B (en) * | 2018-08-10 | 2021-03-19 | 佛山市爱米吧科技有限公司 | Cooking material cleaning method and cooking device |
KR20210017648A (en) * | 2019-08-09 | 2021-02-17 | 주식회사 위니아딤채 | Control method of induction heating rice cooker for reduced carbohydrate |
CN110419954A (en) * | 2019-08-28 | 2019-11-08 | 青岛澳柯玛生活电器有限公司 | A kind of device for lowering blood sugar and the electric cooker for being equipped with the device for lowering blood sugar |
CN110710860A (en) * | 2019-11-11 | 2020-01-21 | 宜昌市第二人民医院 | Desugarizing and layering electric cooker |
CN111839192B (en) * | 2020-07-10 | 2022-04-15 | 广东美的厨房电器制造有限公司 | Cooking apparatus |
CN114098407B (en) * | 2020-08-28 | 2023-06-16 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance, control method, control device, and computer-readable storage medium |
CN112493833B (en) * | 2020-12-26 | 2021-11-16 | 珠海格力电器股份有限公司 | Cooking equipment, cooking control method and device of cooking equipment and storage medium |
CN113171015A (en) * | 2020-12-31 | 2021-07-27 | 浙江绍兴苏泊尔生活电器有限公司 | Sprinkler, cooking cup and cooking machine |
CN115137199B (en) * | 2021-03-30 | 2024-04-19 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus and control method thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1371649A (en) * | 2002-02-24 | 2002-10-02 | 陈宗元 | Automatic water spraying electric heating steam cooker |
CN105307541A (en) * | 2013-07-17 | 2016-02-03 | 广州市拓璞电器发展有限公司 | Pressure cooker |
FR3014664B1 (en) * | 2013-12-13 | 2016-02-05 | Seb Sa | ELECTRICAL HEATING AND / OR COOKING APPARATUS FOR STEAM FOOD |
CN203943501U (en) * | 2014-06-21 | 2014-11-19 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker |
-
2016
- 2016-08-30 CN CN201621006865.XU patent/CN206213817U/en active Active
-
2017
- 2017-08-04 AU AU2017320373A patent/AU2017320373A1/en not_active Abandoned
- 2017-08-04 EP EP17748781.6A patent/EP3506805A1/en not_active Withdrawn
- 2017-08-04 CA CA3034461A patent/CA3034461A1/en not_active Abandoned
- 2017-08-04 WO PCT/EP2017/069866 patent/WO2018041535A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2018041535A1 (en) | 2018-03-08 |
CA3034461A1 (en) | 2018-03-08 |
CN206213817U (en) | 2017-06-06 |
AU2017320373A1 (en) | 2019-03-07 |
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