Flowing water rice cooker

Abstract

The present invention provides a flowing water rice-soaking electric rice steamer, which comprises a pot body, a grate, a cover body, a steam generator and a spray assembly. The bottom of the pot body is provided with a discharge port in a normally open state. The grate is arranged in the pot body. The cover body is opened or sealed to cover the pot body. The steam generator is arranged on the cover body or the pot body to output water or steam. The spray assembly is connected to the steam generator and is located above the rice layer. In the rice soaking and draining stage, the steam generator conveys water to the spray assembly, and the spray assembly sprays water evenly to the rice layer on the grate, and the water penetrates the rice layer and the grate and is discharged from the discharge port at the bottom of the pot body, and the rice layer absorbs water during the water flow and penetration process. In the steaming stage, the steam generator conveys steam to the spray assembly, and the spray assembly sprays steam evenly to the rice layer on the grate, and the steam passes through the rice layer and the grate and is discharged from the discharge port at the bottom of the pot body, and the steam passes through the rice layer while heating the rice layer.

Description

Technical Field

[0001] The invention relates to the field of household appliances, and in particular to a flowing water rice-soaking electric rice cooker. Background Art

[0002] At present, most of the rice cookers on the market use water and rice in the inner pot of the rice cooker to cook rice, and then cover the pot and use electric heating to automatically cook rice. When using the existing rice cooker to cook rice, the starch in the rice is first dissolved in water in large quantities, and the starch is gelatinized and gelled under high temperature. Then, as the water is dried, the gelatinized and gelled starch will be absorbed back and attached to the surface of the rice, resulting in soft and sticky rice with poor taste. In order to improve the taste of rice and reduce the amount of starch contained in the cooked rice, a rice cooker that can make steamer rice is currently available on the market. Traditional steamer rice is a kind of rice made using my country's traditional cooking utensils "steamer". The production of steamer rice mainly includes three steps: the first step is to soak the rice; the second step is to drain the rice; and the third step is to steam. Soaking the rice can remove a large amount of starch from the rice grains, while steaming and heating the rice can keep the surface of the rice grains dry.

[0003] In the first step of soaking rice, the existing electric rice cooker for steaming rice adopts water storage in a closed cavity. In the second step, the rice draining mainly adopts two methods: the first method is to separate the inner pot containing rice and the pot body up and down through a mechanical lifting structure, so as to achieve the drainage; this drainage method is not only complicated in structure but also bulky in size because a lifting mechanism is required in the electric rice cooker. The second method is to set a valve in the pot body, close the valve to achieve water storage when soaking rice, and open the valve to achieve drainage when draining rice; although this method of soaking rice and draining water is simple in structure and easy to operate, it still has great problems. When using a valve to store water, since the diameter of rice grains is not fixed, some rice grains will leak through the steaming grid and fall into the gap of the valve, so that the valve cannot be closed or opened normally, and it is very easy to malfunction. In addition, since the rice grains contain a lot of starch, the starch will be deposited in the valve and the pipe during the process of closing the valve and storing water; since the valve and the pipe are very difficult to clean or even impossible to clean. Therefore, this type of rice cooker will have major hygiene and safety issues after being used for a period of time. At the same time, the large amount of starch deposited in the valve and pipes can easily produce odor, which will greatly affect the taste of the rice. Summary of the invention

[0004] In order to overcome the problems of high failure rate and poor sanitation and safety of the existing water-storing rice-soaking rice steamer electric rice cooker, the invention provides a flowing water rice-soaking rice steamer with no drainage failure and no sedimentation.

[0005] In order to achieve the above object, the present invention provides a flowing water rice-soaking electric rice cooker, which comprises a pot body, a grate, a cover body, a steam generator and a spray assembly. The bottom of the pot body has a discharge port in a normally open state. The grate is arranged in the pot body. The cover body is opened or sealed to the pot body. The steam generator is arranged on the cover body or the pot body to output water or steam. The spray assembly is connected to the steam generator and is located above the rice layer.

[0006] In the soaking and draining stage of rice, the water vapor generator delivers water to the spraying assembly, and the spraying assembly sprays the water evenly to the rice layer on the grate. The water penetrates the rice layer and the grate and is discharged from the discharge port at the bottom of the pot body. The rice layer absorbs water during the water flow and penetration process.

[0007] During the steaming stage, the steam generator delivers steam to the spray assembly, which sprays the steam evenly onto the rice layer on the grate. The steam passes through the rice layer and the grate and is discharged from the discharge port at the bottom of the pot body. The steam heats the rice layer while passing through the rice layer.

[0008] According to one embodiment of the present invention, the spray assembly includes a hollow rotating shaft and at least two hollow rotating arms. The hollow rotating shaft is rotatably connected to the output end of the water vapor generating assembly. At least two hollow rotating arms are connected to the hollow rotating shaft, and each hollow rotating arm has a horizontal drainage channel distributed along its length direction. The spray direction of the horizontal drainage channel is opposite to the rotation direction of the hollow rotating arm. The horizontal drainage channel outputs water or steam while generating a force that drives the hollow rotating arm to rotate.

[0009] According to an embodiment of the present invention, the horizontal drainage channel includes at least one axial drainage groove extending to the end of the hollow rotating arm and opening in a direction opposite to the rotation direction thereof.

[0010] According to an embodiment of the present invention, the spray assembly further comprises a plurality of guide and pressure boosting plates correspondingly arranged on the plurality of axial guide grooves, wherein the added guide plates are curved plates and rotate along with the corresponding hollow rotating arms.

[0011] According to one embodiment of the present invention, the output end of the water vapor generator penetrates the cover body and extends into the pot body, and the spray assembly also includes a rotating shaft connecting piece, which is sleeved on the connection between the output end of the water vapor generator and the hollow rotating shaft, the upper end of the rotating shaft connecting piece is fixed to the cover body, and the lower end has a hook groove, and the hollow rotating shaft has a protrusion that matches the hook groove, and the hollow rotating shaft rotates relative to the output end of the water vapor generator and the rotating shaft connecting piece.

[0012] According to one embodiment of the present invention, the hollow shaft is sleeved inside the output end of the water vapor generating assembly, a rotation gap is formed between the middle of the shaft connector and the hollow shaft, and the surface of the raised portion is an arc surface.

[0013] According to one embodiment of the present invention, the cover body includes an upper cover and a lower cover, a containing space is formed between the upper cover and the lower cover, the steam generator is arranged in the containing space, and the output end of the steam generator penetrates the lower cover to extend into the pot body.

[0014] According to one embodiment of the present invention, the steam generator includes a water tank, a water inlet valve, an overflow steam pipe and a heating element. The water inlet valve is arranged on the cover body and connected to the water tank, and water is supplied to the water tank for pressurization. The overflow steam pipe is vertically arranged in the water tank, and the bottom of the overflow steam pipe penetrates the bottom of the water tank and the lower cover to extend into the pot body. The steam in the water tank and the water above the upper end surface of the overflow steam pipe are output to the spray assembly through the overflow steam pipe. The heating element is arranged in the water tank to heat the water in the water tank.

[0015] According to an embodiment of the present invention, the heating element is a heating pipe disposed in the water storage tank and a portion of the heating pipe is attached to the outside of the overflow steam pipe.

[0016] According to one embodiment of the present invention, the spray assembly includes a spray basin arranged under the cover body, the distance D from the inner bottom wall of the spray basin to the outer bottom wall of the cover body is greater than or equal to 3 mm and less than or equal to 50 mm, and the bottom of the spray basin has a plurality of evenly distributed spray holes, and the water and steam output by the water vapor generator are blocked by the cover body and sprayed out from the spray holes.

[0017] In summary, the bottom of the pot body of the electric rice cooker for soaking rice in flowing water provided by the present invention has a discharge port in a normally open state. When soaking rice, the spraying assembly sprays the water output by the steam generator onto the rice layer evenly and continuously, and the water gradually penetrates the rice layer and the grate and is then discharged from the discharge port at the bottom of the pot body. The electric rice cooker for soaking rice in flowing water provided by the present invention uses flowing water to soak the rice layer in a non-water storage manner. During the process of water penetrating the rice layer, the rice grains absorb water. At the same time, the penetrated water takes away the starch gradually precipitated to the surface of the rice grains during the soaking process in real time. The starch will not be deposited in the pot body and the pipeline, and the pot body and the pipeline have a high degree of cleanliness. Furthermore, the non-water storage method for soaking rice makes it unnecessary to set any valve switch in the pot body, which not only greatly simplifies the structure of the pot body, but also avoids the deposition of starch-containing soaking water on components such as valve switches. In addition, during the steaming stage, the discharge port at the bottom of the pot body allows steam to penetrate and heat the rice layer from top to bottom; the direction of steam transmission from top to bottom is the same as the direction of gravity of the water in the rice layer. During the transmission process, the steam brings out the residual water in the rice layer and on the grate, thereby ensuring that the rice in each area has good consistency after steaming.

[0018] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1Shown is a schematic structural diagram of a flowing water rice-soaking electric rice cooker provided in Embodiment 1 of the invention.

[0020] Figure 2 Shown Figure 1 Schematic cross-sectional view of .

[0021] Figure 3 Shown Figure 2 A magnified schematic diagram of center A.

[0022] Figure 4 Shown Figure 1 Schematic diagram of the exploded view of the cover body, water vapor generator and spray assembly.

[0023] Figure 5 Shown Figure 1 Schematic diagram of the exploded view of the middle pot body and grate.

[0024] Figure 6 Shown Figure 1 Assembly cross-sectional view of the middle cover body, water vapor generator and spray assembly.

[0025] Figure 7 Shown is a schematic diagram of the structure of the spray assembly.

[0026] Figure 8 Shown is a schematic structural diagram of a spray assembly in a flowing water rice-soaking electric rice cooker provided in the second embodiment of the present invention.

[0027] Fig. 9 Shown is a schematic structural diagram of a flowing water rice-soaking electric rice cooker provided in Embodiment 3 of the present invention.

[0028] Fig.10 Shown Fig. 9 Schematic diagram of the exploded view of the middle cover body, water vapor generator and spray assembly.

[0029] Fig.11 Shown Fig. 9 Assembly diagram of the middle cover body, water vapor generator and spray assembly. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figures 1 to 7As shown, the flowing water rice-soaking electric rice cooker provided in this embodiment comprises a pot body 1, a grate 2, a cover body 3, a steam generator 4 and a spray assembly 5. The bottom of the pot body 1 has a discharge port 11 in a normally open state. The grate 2 is arranged in the pot body 1. The cover body 3 is opened or sealed to cover the pot body 1. The steam generator 4 is arranged on the cover body 3 or the pot body 1 to output water or steam. The spray assembly 5 is connected to the steam generator 4 and is located above the rice layer. Among them, in the stage of soaking rice and draining water, the steam generator 4 conveys water to the spray assembly 5, and the spray assembly 5 sprays water evenly to the rice layer on the grate 2, and the water penetrates the rice layer and the grate 2 and is discharged from the discharge port 11 at the bottom of the pot body. The rice layer absorbs water during the process of water flow and penetration. During the steaming stage, the steam generator 4 delivers steam to the spray assembly 5, which sprays the steam evenly onto the rice layer on the grate 2. The steam passes through the rice layer and the grate 2 and is discharged from the discharge port 11 at the bottom of the pot body. The steam passes through the rice layer and heats the rice layer at the same time.

[0032] In the flowing water rice-soaking electric rice cooker provided in the present embodiment, the spraying assembly 5 sprays water uniformly and continuously onto the rice layer, and the water permeates through the rice layer and the grate 2 and is discharged through the discharge port 11 at the bottom of the pot body which is in a normally open state. In the process of water permeating the rice layer, the rice grains in the rice layer absorb water to achieve soaking; at the same time, the permeating flowing water takes away the starch on the surface of the rice grains after absorbing water and soaking, reducing the starch content of the steamed rice, thereby making it more conducive to the consumption of diabetic patients. In the present embodiment, since the water permeating the rice layer is always in a flowing state, the starch precipitated from the rice grains is discharged from the discharge port 11 in real time following the water flow, and the starch will not precipitate and accumulate in the pot body 1 and the pipe 6 connected to the discharge port. Therefore, during use, a high degree of cleanliness can be maintained in the pot body 1 and the pipe 6.

[0033] The flowing water rice-soaking type electric rice steamer provided by the present embodiment adopts flowing water to soak the rice layer in a non-water storage manner, and the rice layer absorbs water during the water flow penetration. Compared with the traditional closed cavity water storage type rice-soaking method, the flowing water rice-soaking method is a brand-new rice-soaking method with a completely opposite principle. Since no water storage is required, no valve switch is required to be arranged in the pot body 1, and the structure of the pot body 1 is very simple. Not only will there be no valve switch failure, but there will also be no problem of valve switch being contaminated by starch, and the whole utensil is easy to clean and has good sanitation and safety. In addition, the flowing water rice-soaking type electric rice steamer provided by the present embodiment integrates the two major procedures of soaking rice and draining in the existing rice steamer making. For the automatic rice steaming utensil, this setting also greatly simplifies the program steps, and the program design will also be simpler.

[0034] Compared with the traditional closed space water storage type rice soaking method, in order to achieve uniform soaking of the rice layer, the flowing water rice soaking type electric rice cooker provided in this embodiment has very high requirements on the spraying uniformity of the spray component 5. Specifically, the spray component 5 includes a hollow rotating shaft 51 and at least two hollow rotating arms 52 connected to the hollow rotating shaft 51. Each hollow rotating arm 52 has a horizontal drainage channel 521 distributed along its length direction. The spraying direction of the horizontal drainage channel 521 is opposite to the rotation direction of the hollow rotating arm 52. The horizontal drainage channel 521 generates a force that drives the hollow rotating arm 52 to rotate while spraying water or steam. In this embodiment, Figure 7 As shown, the spray assembly 5 includes two hollow rotating arms 52 symmetrically connected to the hollow rotating shaft 51, and the middle parts of the two hollow rotating arms 52 are connected to the hollow rotating shaft 51 after being integrally formed. However, the present invention does not make any limitation to this. In other embodiments, the end of the hollow rotating shaft may have two symmetrical interfaces, and the two hollow rotating arms may be connected to the corresponding interfaces respectively. Or in other embodiments, the spray assembly may also include more than three hollow rotating arms, and the multiple hollow rotating arms are evenly distributed along the circumference of the hollow rotating shaft.

[0035] In this embodiment, the horizontal drainage channel 521 is an axial drainage groove extending to the end of the hollow rotating arm 52 and opening in the direction opposite to the rotation direction thereof. However, the present invention does not impose any limitation on this. In other embodiments, the horizontal drainage channel may also be a plurality of drainage holes distributed along the length direction of the hollow rotating arm and having a water outlet direction opposite to the rotation direction of the hollow rotating arm. Alternatively, in other embodiments, a vertical drainage groove or vertical drainage hole for vertical water outlet may also be provided on the hollow rotating arm to increase the water outlet.

[0036] like Figure 7 As shown, the opening of the axial drainage groove faces counterclockwise, and when it sprays water or steam, it generates a force that pushes the hollow rotating arm 52 to rotate clockwise, and the two hollow rotating arms 52 drive the hollow rotating shaft 51 to rotate clockwise. The centrifugal force generated by the rotation throws the water or steam sprayed from the axial drainage groove to the outer circumferential area of ​​the rice layer, thereby solving the problem of uneven water spraying on the outer circumference of the rice layer caused by the length limitation of the hollow rotating arm 52, and achieving uniform water spraying on the entire circumferential surface. In other embodiments, the opening direction of the axial drainage groove can also be changed to change the rotation direction of the hollow rotating arm.

[0037] When spraying water or steam, sufficient pressure must be maintained in the hollow rotating arm 52 to allow water or steam to be uniformly sprayed out from the horizontal drainage channel 521; if the pressure in the hollow rotating arm 52 is too small, the end of the horizontal drainage channel 521 will have a small amount of spray or even no spray. The smaller the water outlet cross-section of the horizontal drainage channel 521, the greater the spray pressure and the better the uniformity of the spray; but the corresponding spray amount is smaller, which will not only affect the efficiency of soaking rice or steaming, but also too little spraying makes it impossible for the water or steam reaching the rice layer to diffuse in the rice layer, which will also restrict the uniformity of soaking rice or steaming. Therefore, in this embodiment, the width of the axial drainage groove is set to 3 mm. However, the present invention does not make any limitation to this. In other embodiments, the width of the axial drainage groove can be other values ​​within 0.5 mm to 5 mm.

[0038] In this embodiment, the output end of the water vapor generator 4 penetrates the cover body 3 and extends into the pot body 1, and the hollow shaft 51 is connected to the output end of the water vapor generator 4. Since the water spray assembly 5 has a certain weight, in order to keep it stable during rotation, in this embodiment, the spray assembly 5 also includes a shaft connector 53, which is sleeved at the connection between the output end of the water vapor generator 4 and the hollow shaft 51. Figure 3 As shown, the upper end of the shaft connector 53 is fixed to the cover body 3, and the lower end has a hook groove 531. The hollow shaft 51 has a protrusion 511 that matches the hook groove 531. The hook groove 531 is engaged with the protrusion 511 to overcome the gravity of the hollow shaft 51 and the hollow rotating arm 52, so that the hollow shaft 51 can rotate stably relative to the output end of the water vapor generator 4 and the shaft connector 53.

[0039] In addition, in order to achieve smooth rotation of the hollow rotating arm 52, it is necessary to reduce the resistance of the rotating connection as much as possible. In this embodiment, a hollow rotating shaft 51 is set to be sleeved inside the output end of the water vapor generating assembly 4, and a rotation gap 500 is formed between the middle part of the rotating shaft connecting member 53 and the hollow rotating shaft 51, and the surface of the raised portion 511 is an arc surface. There is no contact between the middle part of the rotating shaft connecting member 53 and the hollow rotating shaft 51, and the hollow rotating shaft 511 and the rotating shaft connecting member 53 are only in small area contact through the groove 531 and the raised portion 511, or even point contact. This setting greatly reduces the friction resistance between the hollow rotating shaft 51 and the rotating shaft connecting member 53, not only making the hollow rotating arm 52 rotate more smoothly but also less worn.

[0040] In this embodiment, the cover body 3 includes an upper cover 31 and a lower cover 32, and a receiving space is formed between the upper cover 31 and the lower cover 32. The steam generator 4 is disposed in the receiving space, and the output end of the steam generator 4 penetrates the lower cover 32 to extend into the pot body 1. However, the present invention is not limited to this. In other embodiments, the steam generator may also be disposed outside the cover body or the pot body.

[0041] like Figure 4 As shown, the steam generator 4 includes a water tank 41, a water inlet valve 42, an overflow steam pipe 43 and a heating element 44. The water inlet valve 42 is arranged on the cover body 3 and connected to the water tank 41, and supplies water to the water tank 41 for pressurization. The overflow steam pipe 43 is vertically arranged in the water tank 41. The bottom end of the overflow steam pipe 43 penetrates the bottom of the water tank 41 and the lower cover 32 and extends into the pot body 1 to form the output end of the steam generator 4. When soaking rice, the water inlet valve 42 injects water into the water tank 41, and the water level in the water tank 41 gradually rises; when the water level in the water tank 1 is higher than the top of the overflow steam pipe 43, the water in the water tank 41 flows into the overflow steam pipe 43 and enters the spray assembly 5. When the rice is soaked and the steaming stage begins, the water inlet valve 42 is closed, and the heating element 44 heats the remaining water in the water storage tank 41 to make it boil and generate steam, and the steam enters the spray assembly 5 through the overflow steam pipe 43.

[0042] In this embodiment, the heating element 44 is a heating tube disposed in the water tank 41. However, the present invention is not limited to this. In other embodiments, the heating element may also be a heating plate disposed at the bottom of the water tank. Figure 2 As shown, the heating tube is partially attached to the outside of the overflow steam tube 43, and the heating tube can quickly heat the steam or water in the overflow steam tube 43; when soaking rice, hot water higher than normal temperature water can be sprayed on the rice layer to achieve hot water soaking; and in the steaming stage, condensation of steam during transmission in the overflow steam tube 43 can be avoided.

[0043] In this embodiment, the steam generator 4 further includes two water level sensors 45 disposed on the water tank 41. The water level sensor 45 detects the water level in the water tank 41 in real time to prevent the heating element 44 from drying out; or turns on the heating element 44 when water is detected to enter the water tank 41. However, the present invention does not make any limitation to this.

[0044] In this embodiment, the upper cover 31 also has a through hole 311 connected to the water storage tank 41, and a hole cover 312 is detachably connected to the through hole 311; specifically, the hole cover 312 is threadedly connected to the through hole 311. After the rice steaming device has been used for a period of time, the user can open the hole cover 312 and put the descaling agent into the water storage tank 41 to dissolve the scale at the bottom of the water storage tank 41. After the scale is dissolved, open the water inlet valve 42 to connect external tap water or purified water to the water storage tank 41, and the sewage flows out from the overflow steam pipe 43 and enters the pot body 1 and then is discharged from the discharge port 11, thereby achieving the cleaning of the water storage tank 41, which is very convenient to use. In other embodiments, a movable blocking plate can also be set on the through hole, and a storage box for containing the descaling agent is set above the blocking plate. The blocking plate is controlled by the controller of the rice steaming device, and when the controller receives a cleaning command, the blocking plate is opened to automatically put the descaling agent into the water storage tank. In this embodiment, the water inlet valve 42, the water level sensor 45, the display screen and other electronically controlled components are all controlled by a controller (not shown in the figure due to viewing angle).

[0045] The following will be combined Figures 1 to 7 The working process of making steamed rice in the flowing water rice-soaking electric rice cooker provided in this embodiment is introduced in detail.

[0046] The first stage: soaking rice. External tap water or pure water enters the water tank 41 through the water inlet valve 42, and the water level in the water tank 41 continues to rise. When the water level in the water tank 41 is higher than the top of the overflow steam pipe 43, the water flows through the overflow steam pipe 43 to the hollow shaft 51 and then enters the two hollow rotating arms 52. The pressure in the hollow rotating arm 52 increases, so that the water is ejected counterclockwise from the axial drainage groove on the hollow rotating arm 52, and at the same time, the two hollow rotating arms 52 begin to rotate clockwise. The water ejected from the axial drainage groove is uniformly sprayed onto the rice layer along the entire circumferential surface, and the water sprayed onto the rice layer penetrates through the rice layer and the grate 2 and is discharged from the discharge port 11 in the normally open state. The rice grains in the rice layer absorb water during the penetration process, and the rice is soaked in flowing water. In this embodiment, the process of soaking rice takes about 30 minutes, and during this process, the hollow rotating arm 52 continues to spray water onto the rice layer. However, the present invention does not make any limitation to this. In other embodiments, since water will remain in the rice layer, a hollow rotating arm can be set to spray water in stages during the rice soaking process to achieve the purpose of saving water.

[0047] In addition, since a water level sensor 45 is installed on the water tank 41, in other embodiments, when the water level sensor 45 senses that water has entered the water tank 41, the heating element 44 can be turned on to soak the rice with hot water higher than normal temperature. In order to save the heating time of water, the power of the heating element will be increased as much as possible to ensure the speed and temperature of the water output.

[0048] The second stage is steaming. The water inlet valve 42 closes the external water inlet, and the heating element 44 heats the remaining water in the water tank 41. The water boils to generate steam, which enters the hollow rotating arm 52 through the overflow steam pipe 43 and the hollow rotating shaft 51 and sprays out from the axial drainage groove counterclockwise. While the steam is spraying, the hollow rotating arm 52 rotates clockwise. Similarly, the centrifugal force generated by the rotation throws the ejected steam to the edge of the rice layer to improve the uniformity of spraying. Furthermore, the rotating hollow rotating arm 52 causes the airflow above the rice layer to generate a vortex, which increases the speed at which the steam penetrates the rice layer, greatly improving the uniformity of heating the rice layer in the vertical direction while also improving the heating efficiency.

[0049] The third stage is the second water absorption. After the rice has been steamed for a period of time, it needs to be absorbed for the second time. In this stage, you can use normal temperature water to absorb the water, or you can use high temperature water to absorb the water. If you use normal temperature water to absorb the water, just repeat the first stage. If you use high temperature water to absorb the water, you need to turn on the heating element while the water is being added.

[0050] In the fourth stage, the steaming of step 2 is repeated until the rice is cooked. However, the present invention is not limited to this. In other embodiments, water absorption can be performed multiple times during the steaming process.

[0051] This embodiment takes making steamed rice as an example to illustrate the working process of the flowing water rice steamer. However, the present invention does not limit this. In other embodiments, the flowing water rice steamer provided in this embodiment can also be used as a steamer; for example, to steam fish, grains, steamed buns and other foods placed on the grate; in this case, the program does not need to perform the first stage of soaking rice.

[0052] In this embodiment, if Figure 1 and 2 As shown, to facilitate the user to take the grate 2, the grate 2 includes a grate body 21 and a hand-held portion 22 arranged on the grate body 21. To facilitate the opening and closing of the cover 3, a hydraulic rod 7 is further arranged between the cover 3 and the pot body 1, and a handle 8 is provided on the cover 3. In this embodiment, the outside of the pot body 1 has a shell 9, and to facilitate the movement of the entire rice steaming device, a roller 10 is further arranged at the bottom of the shell 9.

[0053] Embodiment 2

[0054] This embodiment is basically the same as the first embodiment and its variations, except that: Figure 8 As shown, the spray assembly 5 further includes two guide and pressure-increasing plates 54 disposed on the axial guide groove. The guide and pressure-increasing plates 54 guide and guide the water and steam sprayed from the axial guide groove to improve the spraying uniformity. At the same time, the rotating guide and pressure-increasing plates 54 also enhance the airflow vortex in the pot body 1, thereby accelerating the high-temperature steam to penetrate the rice layer, further improving the steaming efficiency. Figure 8The directions of the two arrows are the rotation directions of the hollow rotating arm and the guide supercharger plate.

[0055] In the present embodiment, the guide and boost plate 54 is a curved plate protruding outward. Since the rotational force of the hollow rotating arm 52 comes from the horizontal jet force of the axial drainage groove. In the present embodiment, the curvature of the guide and boost plate 54 near one end of the axial drainage groove is smaller than the curvature of the other end. The small curvature near one end of the axial drainage groove enables the axial drainage groove to maintain a higher horizontal jet force to drive the hollow rotating arm 52 to rotate. However, the present invention does not impose any limitation on this. In other embodiments, when the jet speed and pressure of the axial drainage groove are both very large, the guide and boost plate can also be a circular arc surface with equal curvature.

[0056] Embodiment 3

[0057] This embodiment is basically the same as the first embodiment and its variations, except that: Figures 9 to 11 As shown, in this embodiment, the spray assembly 5' includes a spray basin 51' sealedly arranged under the cover body 3, and the distance D from the inner bottom wall of the spray basin 51' to the outer bottom wall of the cover body 3 is greater than 3 mm and less than or equal to 50 mm. The bottom of the spray basin 51' has a plurality of evenly arranged spray holes 511', and the water and steam output from the overflow steam pipe 43 are blocked and pressurized by the cover body 3' and then sprayed out from the spray holes 511'.

[0058] In this embodiment, the cover 3 and the spraying basin 51' are sealed and connected, and a drainage space is formed between the two. Since the aperture of the spraying hole 511' is very small, the water and steam output from the overflow steam pipe 43 quickly fill the drainage space. As the water and steam increase, the pressure in the drainage space continues to increase. When the drainage space has sufficient pressure, the water and steam in it are quickly and smoothly sprayed out from each spraying hole 511' and enter the rice layer, thereby achieving uniformity in soaking and steaming the rice.

[0059] Preferably, the distance D from the inner bottom wall of the spray basin 51' to the outer bottom wall of the cover body 3' is set to be 10 mm; the diameter of the spray hole 511' is 1 mm. However, the present invention is not limited to this. In other embodiments, the distance D from the inner bottom wall of the spray basin to the outer bottom wall of the cover body can be other values ​​within the range of 3 mm to 50 mm; the diameter of the spray hole can be other values ​​within the range of 0.5 mm to 3 mm.

[0060] In this embodiment, the side wall of the spray basin 51' also has a plurality of radial spray holes 512', and the spray holes 512' spray water or steam in the radial direction, and the water or steam is blocked by the inner wall of the pot body 1 and then drips to the rice layer at the edge so that the rice layer at the edge can fully absorb water and heat. However, the present invention does not make any limitation to this. When the bottom diameter of the spray basin is close to or equal to the surface diameter of the rice layer, it is not necessary to set radial spray holes.

[0061] In summary, the bottom of the pot body of the electric rice cooker for soaking rice in flowing water provided by the present invention has a discharge port in a normally open state. When soaking rice, the spraying assembly sprays the water output by the steam generator onto the rice layer evenly and continuously, and the water gradually penetrates the rice layer and the grate and is then discharged from the discharge port at the bottom of the pot body. The electric rice cooker for soaking rice in flowing water provided by the present invention uses flowing water to soak the rice layer in a non-water storage manner. During the process of water penetrating the rice layer, the rice grains absorb water. At the same time, the penetrated water takes away the starch gradually precipitated to the surface of the rice grains during the soaking process in real time. The starch will not be deposited in the pot body and the pipeline, and the pot body and the pipeline have a high degree of cleanliness. Furthermore, the non-water storage method for soaking rice makes it unnecessary to set any valve switch in the pot body, which not only greatly simplifies the structure of the pot body, but also avoids the deposition of starch-containing soaking water on components such as valve switches. In addition, during the steaming stage, the discharge port at the bottom of the pot body allows steam to penetrate and heat the rice layer from top to bottom; the direction of steam transmission from top to bottom is the same as the direction of gravity of the water in the rice layer. During the transmission process, the steam brings out the residual water in the rice layer and on the grate, thereby ensuring that the rice in each area has good consistency after steaming.

[0062] Although the present invention has been disclosed as above by the preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection required by the claims.

Claims

1. A flowing water rice-soaking electric rice cooker, characterized in that: include: The pot body has a discharge port at the bottom which is in a normally open state; A grate is arranged in the pot body; A cover body, opened or sealed to cover the pot body; A steam generator is arranged on the cover or the pot body to output water or steam; A spraying assembly, connected to the water vapor generator and located above the rice layer; In the soaking and draining stage of rice, the water vapor generator delivers water to the spraying assembly, and the spraying assembly sprays the water evenly to the rice layer on the grate. The water penetrates the rice layer and the grate and is discharged from the discharge port at the bottom of the pot body. The rice layer absorbs water during the water flow and penetration process. During the steaming stage, the steam generator delivers steam to the spray assembly, and the spray assembly sprays the steam evenly onto the rice layer on the grate. The steam passes through the rice layer and the grate and is discharged from the discharge port at the bottom of the pot body. The steam passes through the rice layer and heats the rice layer; wherein the spray assembly comprises: A hollow rotating shaft, rotatably connected to the output end of the water vapor generating assembly; At least two hollow rotating arms are connected to the hollow rotating shaft, and each hollow rotating arm has a horizontal drainage channel distributed along its length direction. The injection direction of the horizontal drainage channel is opposite to the rotation direction of the hollow rotating arm. The horizontal drainage channel outputs water or steam and generates a force to push the hollow rotating arm to rotate; the horizontal drainage channel includes at least one axial drainage groove extending to the end of the hollow rotating arm and opening in the opposite direction of its rotation direction; the output end of the water vapor generator penetrates the cover body and extends into the pot body, and the spray assembly also includes a shaft connector, which is sleeved on the connection between the output end of the water vapor generator and the hollow rotating shaft, the upper end of the shaft connector is fixed to the cover body, and the lower end has a hook groove, and the hollow rotating shaft has a protrusion that matches the hook groove, and the hollow rotating shaft rotates relative to the output end of the water vapor generator and the shaft connector.

2. The flowing water rice-making electric rice cooker according to claim 1, characterized in that: The spray assembly further comprises a plurality of guide and pressure boosting plates correspondingly arranged on the plurality of axial guide grooves, wherein the guide and pressure boosting plates are curved plates and rotate along with the corresponding hollow rotating arms.

3. The flowing water rice-making electric rice cooker according to claim 1, characterized in that: The hollow rotating shaft is sleeved inside the output end of the water vapor generating assembly, a rotation gap is formed between the middle of the rotating shaft connector and the hollow rotating shaft, and the surface of the raised portion is an arc curved surface.

4. The flowing water rice-making electric rice cooker according to claim 1, characterized in that: The cover body comprises an upper cover and a lower cover, an accommodating space is formed between the upper cover and the lower cover, the steam generator is arranged in the accommodating space, and the output end of the steam generator penetrates the lower cover to extend into the pot body.

5. The flowing water rice-making electric rice cooker according to claim 4, characterized in that: The water vapor generator comprises: Water storage tanks; A water inlet valve is arranged on the cover body and connected to the water storage tank to supply water and increase the pressure in the water storage tank; The overflow steam pipe is vertically arranged in the water storage tank, the bottom of the overflow steam pipe penetrates the bottom of the water storage tank and the lower cover to extend into the pot body, and the steam in the water storage tank and the water above the upper end surface of the overflow steam pipe are output to the spray assembly through the overflow steam pipe; The heating element is arranged in the water tank and heats the water in the water tank.

6. The flowing water rice-making electric rice cooker according to claim 5, characterized in that: The heating element is a heating pipe arranged in the water storage tank and a portion of the heating pipe is attached to the outside of the overflow steam pipe.

7. The flowing water rice-making electric rice cooker according to claim 1, characterized in that: The spray assembly includes a spray basin arranged below the cover body, a distance D between the inner bottom wall of the spray basin and the outer bottom wall of the cover body is greater than or equal to 3 mm and less than or equal to 50 mm, a plurality of evenly distributed spray holes are provided at the bottom of the spray basin, and water and steam output by the steam generator are blocked by the cover body and sprayed out from the spray holes.

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