A steam rice cooker
By employing convection heat transfer technology in the heat exchange coil within the steam water exchange tank of the rice cooker, the problem of uneven heating of rice grains is solved, achieving uniform heating and efficient cooking of rice grains, thus improving the ease of use and cooking efficiency of the rice cooker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 杜轩
- Filing Date
- 2025-07-07
- Publication Date
- 2026-08-04
AI Technical Summary
Existing steam rice cookers inject cold water into the rice grains before cooking, which leads to uneven heating of the rice grains, increases the risk of undercooked rice, and has limitations.
The heat exchange coil in the steam heat exchanger tank is used for convective heat exchange to heat cold water to a suitable temperature. The rice grains are then rinsed with hot water and cooked with high-temperature steam to ensure that the rice grains are heated evenly and that the rice water and condensate are separated.
It achieves uniform heating of rice grains, shortens steaming time, improves cooking efficiency, has a compact structure, good compatibility, and is highly convenient to use.
Smart Images
Figure CN224584560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooking equipment technology, specifically to a steam rice cooker. Background Technology
[0002] A steam rice cooker is a kitchen appliance that uses high-temperature steam to cook food. It is widely used in large canteens such as hotels, schools, and factories, and is an indispensable cooking device in modern kitchens. As people pay more attention to healthy eating, some steam rice cookers inject cold water into the rice container before cooking to rinse the rice grains, dissolving some starch and separating the rice water, thus reducing the sugar content of the rice. This is suitable for people who are trying to control their blood sugar. However, rinsing the rice grains with cold water can cause uneven heating, increasing the risk of undercooked rice, which has certain limitations. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a steam rice cooker with a compact structure, good compatibility, high cooking efficiency and easy use.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A steam rice cooker includes a casing, a cooking tank, and a steam input pipe. The casing houses a steam heat exchange tank and a four-way connector. The steam input pipe has a heat exchange steam branch pipe and a cooking steam branch pipe. The steam heat exchange tank contains a heat exchange coil. The input end of the heat exchange coil is connected to the heat exchange steam branch pipe, and the output end of the heat exchange coil is connected to a steam output pipe. The steam heat exchange tank is connected to a cold water inlet pipe and a hot water outlet pipe. The first end of the four-way connector is connected to the cooking tank, the second end of the four-way connector is connected to the cooking steam branch pipe, the third end of the four-way connector is connected to the hot water outlet pipe, and the fourth end of the four-way connector is connected to a wastewater pipe.
[0006] As a further improvement to the above technical solution:
[0007] The heat exchange steam branch pipe is equipped with a first manual ball valve and a first solenoid valve; the cooking steam branch pipe is equipped with a second manual ball valve and a second solenoid valve; the steam output pipe is equipped with a third manual ball valve and a third solenoid valve; the cold water inlet pipe is equipped with a fourth solenoid valve; the hot water outlet pipe is equipped with a water pump and a fifth solenoid valve; and the wastewater pipe is equipped with a sixth solenoid valve.
[0008] The steam heat exchanger is connected to a drain pipe, and a fourth manual ball valve is installed on the drain pipe.
[0009] An overflow pipe is connected to the steam heat exchanger tank.
[0010] The casing is equipped with a slag-filtering screen, and a sewage pipe is installed inside the casing. The input end of the sewage pipe is connected to the slag-filtering screen, and the output end of the sewage pipe is connected to the wastewater pipe.
[0011] The output ends of the water vapor output pipe and the output ends of the drainage pipe are connected to the wastewater pipe.
[0012] A control panel is installed on the casing.
[0013] Compared with the prior art, the advantages of this utility model are:
[0014] This utility model of a steam rice cooker includes a casing, a cooking tank, and a steam input pipe. The casing contains a steam heat exchange tank and a four-way pipe connector. The steam heat exchange tank contains a heat exchange coil. After cold water is added to the steam heat exchange tank, high-temperature steam is supplied to the heat exchange coil through a heat exchange steam branch pipe. The high-temperature steam in the heat exchange coil exchanges heat with the cold water in the steam heat exchange tank through convection, thereby heating the water to a suitable temperature. The low-temperature steam and condensate after heat exchange are discharged through a steam output pipe. The first end of the four-way pipe connector is connected to the cooking tank for steam heat exchange. Hot water in the water tank is delivered to the cooking bucket through the hot water outlet pipe and the third end of the four-way pipe connector to rinse the rice grains and dissolve some of the starch. The mixture of hot water and rice grains gives the rice grains a higher initial temperature. High-temperature steam in the cooking steam branch pipe is delivered to the cooking bucket through the second end of the four-way pipe connector to cook the rice grains, resulting in more even heating, shorter cooking time, and improved cooking efficiency. The rinsed rice water and condensate from the cooking process are discharged through the fourth end of the four-way pipe connector and the wastewater pipe. It has the advantages of compact structure, good compatibility, high cooking efficiency, and ease of use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a steam rice cooker.
[0016] Figure 2 This is a schematic diagram of the internal structure of a steam rice cooker.
[0017] Figure 3 This is a breakdown diagram of the internal structure of a steam rice cooker.
[0018] Figure 4 This is a schematic diagram of the piping connection for a steam heat exchanger tank.
[0019] Figure 5 This is a schematic diagram of the piping connection from another angle for the steam heat exchanger tank.
[0020] Legend:
[0021] 1. Casing; 2. Cooking tank; 3. Steam input pipe; 301. Heat exchange steam branch pipe; 302. Cooking steam branch pipe; 4. Steam-heated water tank; 5. Four-way pipe connector; 6. Heat exchange coil; 7. Steam output pipe; 8. Cold water inlet pipe; 9. Hot water outlet pipe; 10. Wastewater pipe; 11. First manual ball valve; 12. First solenoid valve; 13. Second manual ball valve; 14. Second solenoid valve; 15. Third manual ball valve; 16. Third solenoid valve; 17. Fourth solenoid valve; 18. Water pump; 19. Fifth solenoid valve; 20. Sixth solenoid valve; 21. Drain pipe; 22. Fourth manual ball valve; 23. Overflow pipe; 24. Slag screen; 25. Sewage pipe; 26. Control panel. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] like Figures 1 to 5 As shown, the steam rice cooker of this embodiment includes a casing 1, a cooking tank 2, and a steam input pipe 3. The casing 1 is equipped with a steam heat exchange tank 4 and a four-way pipe connector 5. The steam input pipe 3 is divided into a heat exchange steam branch pipe 301 and a cooking steam branch pipe 302. The steam heat exchange tank 4 is equipped with a heat exchange coil 6. The input end of the heat exchange coil 6 is connected to the heat exchange steam branch pipe 301, and the output end of the heat exchange coil 6 is connected to a steam output pipe 7. The steam heat exchange tank 4 is connected to a cold water inlet pipe 8 and a hot water outlet pipe 9. The first end of the four-way pipe connector 5 is connected to the cooking tank 2, the second end of the four-way pipe connector 5 is connected to the cooking steam branch pipe 302, the third end of the four-way pipe connector 5 is connected to the hot water outlet pipe 9, and the fourth end of the four-way pipe connector 5 is connected to a wastewater pipe 10. The steam rice cooker includes a casing 1, a cooking tank 2, and a steam input pipe 3. The casing 1 contains a steam heat exchange tank 4 and a four-way pipe connector 5. The steam heat exchange tank 4 contains a heat exchange coil 6. After cold water is added to the steam heat exchange tank 4, high-temperature steam is supplied to the heat exchange coil 6 through a heat exchange steam branch pipe 301. The high-temperature steam in the heat exchange coil 6 exchanges heat with the cold water in the steam heat exchange tank 4 through convection, thereby heating the water to a suitable temperature (approximately 60-80℃). The low-temperature steam and condensate after heat exchange are discharged through a steam output pipe 7. The first end of the four-way pipe connector 5 is connected to the cooking tank 2. Hot water in the steam heat exchanger 4 is delivered to the cooking tank 2 through the hot water outlet pipe 9 and the third end of the four-way pipe connector 5 to rinse the rice grains and dissolve some of the starch. The mixture of hot water and rice grains can give the rice grains a higher initial temperature. High-temperature steam in the cooking steam branch pipe 302 is delivered to the cooking tank 2 through the second end of the four-way pipe connector 5 to cook the rice grains. The heating is more uniform, the cooking time is shortened, and the cooking efficiency is improved. The rice water after rinsing and the condensate during the cooking process are discharged through the fourth end of the four-way pipe connector 5 and the wastewater pipe 10. It has the advantages of compact structure, good compatibility, high cooking efficiency and easy use.
[0024] Preferably, the heat exchange steam branch pipe 301 is equipped with a first manual ball valve 11 and a first solenoid valve 12, the cooking steam branch pipe 302 is equipped with a second manual ball valve 13 and a second solenoid valve 14, the steam output pipe 7 is equipped with a third manual ball valve 15 and a third solenoid valve 16, the cold water inlet pipe 8 is equipped with a fourth solenoid valve 17, the hot water outlet pipe 9 is equipped with a water pump 18 and a fifth solenoid valve 19, and the wastewater pipe 10 is equipped with a sixth solenoid valve 20. In this embodiment, manual ball valves and solenoid valves are respectively installed on the heat exchange steam branch pipe 301, the cooking steam branch pipe 302, and the steam output pipe 7. The solenoid valves can quickly respond to action signals and are suitable for frequent operation and processes that require precise timing of on / off cycles. The manual ball valves can manually cut off or adjust the flow rate, facilitating manual intervention by operators. Solenoid valves are also installed on the cold water inlet pipe 8, the hot water outlet pipe 9, and the wastewater pipe 10. Similarly, the solenoid valves can quickly respond to action signals, effectively improving the reliability, safety, and ease of maintenance of the internal piping system of the steam rice cooker.
[0025] Preferably, a drain pipe 21 is connected to the steam heat exchanger tank 4, and a fourth manual ball valve 22 is installed on the drain pipe 21. After the steam rice cooker finishes steaming and cooking, the operator can open the fourth manual ball valve 22 to drain the remaining water in the steam heat exchanger tank 4 through the drain pipe 21, keeping the steam heat exchanger tank 4 clean and hygienic.
[0026] Preferably, the steam heat exchanger 4 is connected to an overflow pipe 23. When the water level in the steam heat exchanger 4 rises abnormally, the excess water can be discharged through the overflow pipe 23 to prevent hot water from overflowing and causing injury, thus improving safety.
[0027] Preferably, the casing 1 is equipped with a slag-straining screen 24, and a drain pipe 25 is installed inside the casing 1. The input end of the drain pipe 25 is connected to the slag-straining screen 24, and the output end of the drain pipe 25 is connected to the wastewater pipe 10. In this embodiment, the table surface on the casing 1 where the cooking tank 2 is placed is equipped with a slag-straining screen 24. Condensate, grease, or other kitchen waste liquids generated during the cooking process can be discharged through the slag-straining screen 24 and the drain pipe 25, keeping the table surface clean and hygienic.
[0028] Preferably, the output ends of the water vapor output pipe 7 and the drain pipe 21 are connected to the wastewater pipe 10. In this embodiment, the output ends of the water vapor output pipe 7 and the drain pipe 21 are connected to a collecting pipe. The output end of the wastewater pipe 10 is connected to the first end of a four-way connector, the output end of the collecting pipe is connected to the second end of the four-way connector, the output end of the sewage pipe 25 is connected to the third end of the four-way connector, and the fourth end of the four-way connector is connected to the outside. That is, the water in the water vapor output pipe 7, the water in the drain pipe 21, the water in the wastewater pipe 10, and the water in the sewage pipe 25 are all discharged to the outside through the fourth end of the four-way connector.
[0029] Preferably, a control panel 26 is provided on the casing 1, which facilitates human-computer interaction for operators to select different functions through the control panel 26, effectively improving ease of use.
[0030] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A steam rice cooker, characterized in that, The system includes a casing (1), a cooking tank (2), and a steam input pipe (3). The casing (1) contains a steam heat exchange tank (4) and a four-way pipe connector (5). The steam input pipe (3) has a heat exchange steam branch pipe (301) and a cooking steam branch pipe (302). The steam heat exchange tank (4) contains a heat exchange coil (6). The input end of the heat exchange coil (6) is connected to the heat exchange steam branch pipe (301), and the output end of the heat exchange coil (6) is connected to... There is a water vapor output pipe (7), and the steam heat exchanger (4) is connected to a cold water inlet pipe (8) and a hot water outlet pipe (9). The first end of the four-way pipe connector (5) is connected to the cooking tank (2), the second end of the four-way pipe connector (5) is connected to the cooking steam branch pipe (302), the third end of the four-way pipe connector (5) is connected to the hot water outlet pipe (9), and the fourth end of the four-way pipe connector (5) is connected to a wastewater pipe (10).
2. The steam rice cooker according to claim 1, characterized in that, The heat exchange steam branch pipe (301) is equipped with a first manual ball valve (11) and a first solenoid valve (12), the cooking steam branch pipe (302) is equipped with a second manual ball valve (13) and a second solenoid valve (14), the steam output pipe (7) is equipped with a third manual ball valve (15) and a third solenoid valve (16), the cold water inlet pipe (8) is equipped with a fourth solenoid valve (17), the hot water outlet pipe (9) is equipped with a water pump (18) and a fifth solenoid valve (19), and the wastewater pipe (10) is equipped with a sixth solenoid valve (20).
3. The steam rice cooker according to claim 2, characterized in that, The steam heat exchanger (4) is connected to a drain pipe (21), and a fourth manual ball valve (22) is installed on the drain pipe (21).
4. The steam rice cooker according to claim 3, characterized in that, An overflow pipe (23) is connected to the steam heat exchanger (4).
5. The steam rice cooker according to claim 4, characterized in that, The casing (1) is provided with a slag screen (24), and a sewage pipe (25) is provided inside the casing (1). The input end of the sewage pipe (25) is connected to the slag screen (24), and the output end of the sewage pipe (25) is connected to the wastewater pipe (10).
6. The steam rice cooker according to claim 5, characterized in that, The output end of the water vapor output pipe (7) and the output end of the drain pipe (21) are connected to the wastewater pipe (10).
7. The steam rice cooker according to claim 6, characterized in that, A control panel (26) is provided on the casing (1).