Electromagnetic heating type rice cooker

Abstract

The invention discloses an electromagnetic heating type drained rice electric rice cooker, the main structure of which comprises a magnetic outer pot, a pot cover, a valve opening device sealed in the inner cavity of the pot cover, a valve opening relay rod with permanent magnets on the top and the valve opening, a permanent magnet rice soup valve, a rice pot with a rice soup leakage hole on the bottom and arranged in the magnetic outer pot, a rice soup basin arranged under the rice pot, an electromagnetic induction coil and a control system, etc. When the rice is cooked to 70% to 90% cooked, the valve opening device is energized to cause the valve opening relay rod to fall, and the valve opening magnetic effect of the valve opening device is relayed to the permanent magnet rice soup valve by the falling action of the valve opening relay rod, so that the rice soup valve is opened, and the rice soup in the rice pot is discharged through the leakage hole, so that the rice and the rice soup are completely separated, so that the upper layer and the lower layer of the drained rice are very loose.

Description

Technical Field

[0001] The invention relates to the field of electric rice cooker manufacturing, in particular to an electromagnetic heating type rice-draining electric rice cooker. Background Art

[0002] There is an electromagnetic heating type rice cooker on the market. Figure 1 The main structure comprises an outer shell (1), an outer pot (2), a rice pot (3) with holes distributed on the bottom and side walls, an electromagnetic heating coil (4) and a pot cover (5). The invention is characterized in that the inner layer is a rice pot and the outer layer is a two-layer structure. There is a space between the bottom of the rice pot and the bottom of the outer pot. Before cooking, a proper amount of water is added to the rice pot so that the water surface is above the rice surface by a proper distance. As cooking proceeds, part of the water is absorbed by the rice and evaporated, so that the water surface of the rice soup is lowered and gradually becomes lower than the upper surface of the semi-cooked rice. The steam generated by the continued boiling of the remaining rice soup in the outer pot steams the rice in the rice pot until the rice is cooked. The biggest drawback of this structure is that the rice soup cannot be completely separated from the rice. Because the rice soup cannot be completely separated from the rice, the rice in the lower layer will still be soaked by the rice soup foam overflowing from the boiling rice soup in the rice pot, resulting in the phenomenon that the upper layer of the cooked rice is loose and the lower layer is still wet, and the effect of high-quality rice draining cannot be achieved. Summary of the invention

[0003] The purpose of the present invention is to solve the practical defects of the existing electromagnetic heating drained rice electric rice cooker and provide an electromagnetic heating drained rice electric rice cooker which can make high-quality drained rice with rice and rice soup completely separated.

[0004] The invention discloses an electromagnetic heating type rice cooker, which mainly comprises a pot cover, a valve opening device, a valve opening relay rod, a rice pot with a rice soup leakage hole on the bottom, a rice soup valve arranged on the rice soup leakage hole, an independent built-in rice soup basin, an outer pot, an electromagnetic heating coil and a control system.

[0005] The top and bottom ends of the valve opening relay rod are respectively provided with a relay permanent magnet and a valve opening permanent magnet; a guide groove for the valve opening relay rod to freely move up and down is provided outside the side wall of the rice cooker; the valve opening relay rod is placed in the guide groove.

[0006] The groove on the upper part of the valve opening relay rod can make the valve opening relay rod hang on the upper edge of the guide groove to form the initial position of the valve opening relay rod.

[0007] The electrical drive mechanism of the valve opening device can act on the relay permanent magnet on the valve opening relay rod, and the valve opening relay rod relays and transmits the valve opening magnetic effect after the valve opening device is energized. The lower end of the valve opening relay rod is close to the rice soup valve, and the magnetic attraction of the valve opening permanent magnet causes the rice soup valve to open.

[0008] The valve opening device is powered and can apply magnetic thrust to the relay permanent magnet of the valve opening relay rod through the lower bottom plate of the pot cover, so that the valve opening relay rod is separated from the initial hanging position and falls due to gravity, completing the relay transmission of the valve opening magnetic effect.

[0009] When the valve opening relay rod falls, the valve opening permanent magnet at the lower end of the valve opening relay rod approaches the valve permanent magnet on the rice soup valve to a sufficiently close distance, and the valve opening permanent magnet generates sufficient magnetic attraction on the valve permanent magnet, causing the rice soup valve to deviate from the position closing the rice soup hole and open, and the rice soup in the rice pot leaks through the leakage hole into the independently built-in rice soup basin below, thereby achieving complete separation of the rice soup and the rice.

[0010] The rice soup valve includes a valve permanent magnet, a sealing ring and a positioning column. When the rice soup valve is placed on the rice soup leakage hole according to its own gravity, the outer wall surface of the positioning column and the hole wall of the rice soup leakage hole form a sliding fit, and the sealing ring is tightly attached to the edge of the rice soup leakage hole to form a seal for the rice soup leakage hole.

[0011] The valve opening device is arranged in the interlayer inner cavity of the pot cover. The valve opening device transmits the magnetic force to the valve opening relay rod through the pot mouth of the outer pot through the inner bottom plate of the pot cover and the steam condensation water partition, so that the valve opening device is completely isolated from the water and steam used for cooking.

[0012] The electrical drive mechanism on the valve opening device can be a stationary structure consisting of an iron core and an electromagnetic coil, or a movable structure consisting of an electromagnet and a permanent magnet that controls the extension or retraction.

[0013] The two ends of the control system outputting the valve opening signal can be electrically connected to the two wiring terminals of the electromagnetic coil, or can be electrically connected to the two wiring terminals of the electromagnet.

[0014] When the valve opening device is powered, the electromagnetic coil can emit magnetic lines of force at the end of the iron core; when the valve opening device is powered off, the magnetic lines of force disappear.

[0015] When the valve opening device is powered, the iron core of the electromagnet can drive the permanent magnet fixed on the iron core head to extend; when the valve opening device is powered off, the permanent magnet retracts.

[0016] The rice soup basin and the rice pot are placed in sequence through the rim of the outer pot and are built into the outer pot. The rice soup basin is placed on the bottom of the outer pot through supporting feet, and the rice pot is suspended on the upper edge of the outer pot, forming a positional relationship in which the outer pot is wrapped, the rice pot is on top, and the rice soup basin is in the middle.

[0017] The electromagnetic heating coil only acts on the outer pot and does not act on the rice pot. The rice pot and the rice and water therein are cooked and heated by the steam generated by the boiling water in the outer pot.

[0018] It should be noted that:

[0019] The lower bottom plate of the pot lid, the steam condensation partition of the pot lid, the rice pot and the guide groove of the valve opening relay rod must all be made of non-magnetic or weakly magnetic stainless steel, or aluminum and alloy, or copper and alloy materials; the relay permanent magnet, valve opening permanent magnet and valve permanent magnet must all be high-temperature resistant strong magnets.

[0020] The invention is not only applicable to electromagnetic heating type electric rice cookers, but also can be used for electric heating plate heating type electric rice cookers.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. This new electromagnetic heating rice cooker has a valve-opening device sealed in the inner cavity of the pot lid, and then opens the rice soup valve through the relay and transmission of the valve-opening relay rod in the outer pot. It cleverly solves the obstacle that the magnetic force cannot act through the bottom and side walls of the magnetic outer pot, and effectively solves the problem of completely separating the rice soup and rice and draining the rice in the electromagnetic heating rice cooker. The electromagnetic heating rice cooker can make high-quality drained rice with very loose and delicious upper and lower layers.

[0023] 2. This new type of electromagnetic heating rice cooker, its outer pot, rice pot, rice soup bowl, valve opening relay rod, rice soup valve, etc. can be washed with water at will without any caution.

[0024] 3. This new electromagnetic heating drained rice cooker can cook drained rice, and when the rice pot and rice soup basin are not put in, only the outer pot can be used to cook ordinary rice, porridge, soup or other cooking functions of an ordinary rice cooker. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the basic structure of the electromagnetic heating rice cooker without independent rice soup basin on the market, and the schematic diagram of the separation of rice and rice soup. Figure 1 The accompanying drawings include: an outer shell 1, an outer pot 2, a rice pot 3 with holes distributed on the bottom and side walls, an electric heating plate 4, a pot cover 5, and the area where 6 represents rice, the area where 7 represents rice soup, and the area where 8 represents rice soup foam generated by the overflow of boiling rice soup. Its structural feature is a two-layer structure with an inner layer of the rice pot and an outer layer of the outer pot.

[0026] Figure 2 It is a schematic diagram of one of the basic structures and embodiment 1 of the present invention.

[0027] Figure 3 It is a schematic diagram of the second basic structure and the second embodiment of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the third embodiment of the present invention.

[0029] Figure 5 4 is a schematic structural diagram of a fourth embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Embodiment 1:

[0031] See Figure 2 As shown, this embodiment mainly includes a pot cover 1, a valve opening device 2 installed in the inner cavity of the pot cover, a valve opening relay rod 3, a rice soup valve 4 with a valve permanent magnet, a rice pot 5, an outer pot 6, a rice soup basin 7, an electromagnetic heating coil 8, and a control system 9.

[0032] The electrical drive mechanism 2-1 of the valve opening device 2 adopts a static structure form 2-1-1 in which the electromagnetic coil includes an iron core, 2-1-1-1 is the iron core, 2-1-1-2 is the electromagnetic coil, and 2-1-1-3 is the coil connection terminal.

[0033] Process of cooking and draining rice: put an appropriate amount of clean water in the outer pot 6, put in the rice soup basin 7, put the rice pot 5, install the rice soup valve 4 on the rice soup leakage hole 5-1, put the mesh grille 5-2, put rice and appropriate water in the rice pot, insert the valve opening relay rod 3 into the guide groove 3-3, and hang it on the upper edge of the groove, cover the pot and start the rice draining function program.

[0034] When the rice is cooked to 70% to 90% done, the control system 9 outputs a drive signal, the valve opening device 2 is energized, and the electrical drive mechanism 2-1 generates a magnetic force, which acts on the relay permanent magnet 3-1, causing the valve opening relay rod 3 to break away from the suspension and fall freely. After falling, the valve opening permanent magnet 3-2 transmits the magnetic force to the valve permanent magnet on the rice soup valve 4, the rice soup valve 4 opens, and the rice soup leaks into the rice soup basin 7 through the leakage hole 5-1, thereby achieving a complete separation of the rice soup and the rice.

[0035] The electric rice cooker continues to be powered on for heating, and the clean water in the outer pot 6 continues to boil and cook the rice separated from the rice soup in the rice cooker 5.

[0036] When the programmed cooking time is over, the rice cooker enters the keep-warm state and gives a warning sound indicating that the rice is cooked, cooking the rice into very loose layers. Embodiment 2:

[0037] See Figure 3 As shown, the structure of this embodiment is basically the same as that of the first embodiment, except that the electric drive mechanism 2-1 of the valve opening device 2 specifically adopts a movable structure 2-1-2 composed of an electromagnet and a permanent magnet that controls the extension or retraction thereof, 2-1-2-1 is a permanent magnet that is controlled to extend and retract by an electromagnet, 2-1-2-2 is a coil of the electromagnet, and 2-1-2-3 is a terminal of the electromagnet coil. The process of cooking drained rice is almost the same as that of the first embodiment, and no further description is needed. Embodiment three:

[0038] See Figure 4 As shown, this embodiment is basically the same as the first embodiment, except that the rice soup leakage hole 5-1 is in the same plane as the bottom of the rice pot 5, and the mesh grille 5-2 is made into a convex shape at the position where the rice soup valve 4 is placed. The rest is the same as the first embodiment and will not be repeated here. Embodiment 4:

[0039] See Figure 5 As shown, the structure of this embodiment is basically the same as that of the first embodiment, except that the rice soup basin 7 is not placed in the rice pot 5, and the rice soup flows down into the outer pot and mixes with the clean water. After the rice soup flows down, the electric power of the heating plate needs to be reduced (normally 1 / 5 to 1 / 3) to prevent the rice soup from boiling violently and the rice soup foam from rising too high, causing more rice in the lower layer to be soaked by the rice soup foam. The rest is the same as the first embodiment and will not be repeated here.

[0040] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. An electromagnetic heating type rice cooker, comprising a pot cover (1), a bottom plate under the pot cover (1-1), a valve opening device (2), a valve opening relay rod (3), a rice soup valve (4), a rice pot (5), a rice soup leakage hole (5-1), an outer pot (6), a rice soup basin (7), an electromagnetic heating coil (8) and a control system (9), wherein: The valve opening device (2) is provided with an electric drive mechanism (2-1) and is fixedly mounted on the upper surface of the bottom plate of the pot cover in the cavity of the pot cover (1). The upper end and the lower end of the valve opening relay rod (3) are provided with a relay permanent magnet (3-1) and a valve opening permanent magnet (3-2) respectively. The electric drive mechanism (2-1) of the valve opening device (2) can act on the relay permanent magnet (3-1) on the valve opening relay rod (3), and the valve opening magnetic effect of the valve opening device (2) after being energized is relayed and transmitted by the valve opening relay rod (3). The lower end of the valve opening relay rod (3) is close to the rice soup valve (4), and the rice soup valve (4) is opened by the magnetic attraction of the valve opening permanent magnet (3-2); A guide groove (3-3) is provided on the outer wall of the rice cooker (5), the valve opening relay rod (3) can move in the guide groove in a vertical direction, a groove (3-4) is provided on the upper part of the valve opening relay rod (3), the valve opening relay rod (3) is suspended on the upper edge of the guide groove (3-3) through the groove (3-4), forming an initial position of the valve opening relay rod (3), and the valve opening magnetic force generated by the valve opening device (2) when it is energized generates a magnetic thrust on the relay permanent magnet (3-1) of the valve opening relay rod (3), so that the valve opening relay rod (3) is separated from the suspension and leaves the initial position and falls along the guide groove (3-3) to the valve opening position due to gravity; The electromagnetic heating coil (8) acts only on the outer pot (6) and does not act on the rice pot (5). The rice pot (5) and the rice and water therein are cooked and heated by the steam generated by the boiling water in the outer pot (6).

2. The electromagnetic heating type rice cooker according to claim 1, characterized in that: The electrical drive mechanism (2-1) on the valve opening device (2) can be either a stationary structure (2-1-1) consisting of an iron core and an electromagnetic coil, or a movable structure (2-1-2) consisting of an electromagnet and a permanent magnet that controls its extension and contraction. The two ends of the control system (9) that output the valve opening drive signal can be electrically connected to the two ends of the electromagnetic coil, or can be electrically connected to the two ends of the electromagnetic coil.

3. The electromagnetic heating type rice cooker according to claim 1, characterized in that: The rice soup valve (4) is provided with a valve permanent magnet (4-1), and the valve permanent magnet (4-1) senses the magnetic attraction of the valve opening permanent magnet (3-2) at the lower end of the valve opening relay rod (3) through the side wall of the rice cooker.

4. The electromagnetic heating rice cooker according to claim 1, characterized in that: The rice soup basin (7) and the rice pot (5) are sequentially inserted through the rim of the outer pot (6) and are built into the outer pot (6). Support legs (7-1) are provided on the bottom of the rice soup basin (7), and the support legs (7-1) support the rice soup basin (7) on the bottom of the outer pot (6), forming a positional relationship in which the side wall of the outer pot (6) is on the outside, the rice pot (5) is on the top, and the rice soup basin (7) is in the middle.

5. The electromagnetic heating type rice cooker according to claim 1, characterized in that: The rice soup valve (4) further comprises a sealing ring (4-2) and a positioning column (4-3). When the rice soup valve (4) is placed on the rice soup leakage hole (5-1) by its own gravity, the outer wall surface of the positioning column (4-3) and the hole wall of the rice soup leakage hole (5-1) form a sliding fit, and the sealing ring (4-2) is closely attached to the edge of the rice soup leakage hole (5-1), thereby sealing the rice soup leakage hole (5-1).

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