Food cooking device

Abstract

The present invention provides a food steaming device, which comprises an upper pot assembly, a lower pot assembly, a water delivery pipeline, an air pressure regulating assembly and a steam generating assembly. The upper pot assembly comprises an upper pot body, an upper pot, an upper pot and a pot cover. The upper pot is arranged in the upper pot body and has a water delivery hole on the bottom wall. The upper pot is detachably arranged in the upper pot and the bottom wall of the upper pot has at least one drain hole, and a steam channel is formed between the upper pot and the upper pot. The pot cover is opened or sealed to cover the upper pot and the upper pot, and the pot cover has a steam window connected to the steam channel. The lower pot assembly is detachably connected to the lower part of the upper pot assembly, and the lower pot assembly has a lower pot for holding water. One end of the water delivery pipeline extends into the lower pot and is located below the liquid level, and the other end extends out of the lower pot assembly and is sealed and connected to the water delivery hole. The air pressure regulating assembly is connected to the lower pot and changes the pressure in the lower pot. The steam generating assembly comprises a steam heating element, a steam pot, a steam pipe and a steam control valve installed on the steam pipe.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a food steaming and cooking device. Background Art

[0002] At present, most commercially available electric rice cookers use the method of putting water and rice into the inner pot of the electric rice cooker, and then cover the pot and use electric heating to automatically cook the rice. When using the existing electric 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 the action of 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 the rice being soft and sticky and having a poor taste.

[0003] In order to improve the taste of rice and reduce the amount of starch contained in the cooked rice, there is currently an electric rice cooker on the market that can make drained rice. The main cooking process of this type of electric rice cooker is to cook the rice at high temperature, drain the water, and finally steam the rice. For example, Chinese patent CN205144276U discloses an electric rice cooker with a steamer for draining rice. This type of electric rice cooker can only drain the rice once, and the rice grains cannot be soaked before high-temperature cooking. The rice grains do not absorb enough water, and the moisture content of the drained rice after steaming is low, and the rice tastes dry.

[0004] In order to solve the problems of existing rice draining electric cookers, Chinese patent CN208447219U discloses a rice draining electric cooker that can realize multiple rice draining. However, in order to achieve uniformity of soaking rice in this rice cooker, the soaking time of rice must be strictly controlled, and the speed of water supply or draining must be very fast, which requires that there must be enough volume in the energy-gathering cover, that is, the amount of water in the energy-gathering cover is very large. In the final rice steaming stage, the water in the energy-gathering cover needs to be heated to generate steam to steam the rice in the steamer. There is a lot of water in the energy-gathering cover, and it takes a long time to heat the water in the energy-gathering cover, which prolongs the entire rice steaming time. Summary of the invention

[0005] In order to overcome the problem that the existing rice draining electric rice cooker has a long cooking time, the invention provides a food steaming device which can realize multiple rice draining and has a short rice steaming time.

[0006] In order to achieve the above-mentioned object, the present invention provides a food steaming device, which comprises an upper pot assembly, a lower pot assembly, a water delivery pipeline, an air pressure regulating assembly and a steam generating assembly. The upper pot assembly comprises an upper pot body, an upper pot, an upper pot and a pot cover. The upper pot is arranged in the upper pot body and has a water delivery hole on the bottom wall. The upper pot is detachably arranged in the upper pot and the bottom wall of the upper pot has at least one drain hole, and a steam channel is formed between the upper pot and the upper pot. The pot cover is opened or sealed to cover the upper pot and the upper pot, and the pot cover has a steam window connected to the steam channel. The lower pot assembly is detachably connected to the lower part of the upper pot assembly, and the lower pot assembly has a lower pot for holding water. One end of the water delivery pipeline extends into the lower pot and is located below the liquid level, and the other end extends out of the lower pot assembly and is sealed and connected to the water delivery hole. The air pressure regulating assembly is connected to the lower pot and changes the pressure in the lower pot, and presses the water in the lower pot into the upper pot through the water delivery pipeline, the water delivery hole and the drain hole, or makes the water in the upper pot fall back to the lower pot. The steam generating assembly comprises a steam heating element, a steam pot, a steam pipe and a steam control valve installed on the steam pipe. The steam pipe conveys the steam generated by the steam pot to the upper pot to steam the food in the upper pot.

[0007] According to one embodiment of the present invention, the bottom wall of the upper pot has a plurality of drainage holes, and the bottom wall of the upper pot forms a grate for holding food; or the bottom wall of the upper pot has at least one drainage hole, and a grate for holding food is placed inside the upper pot.

[0008] According to one embodiment of the present invention, the steam cooker is arranged in the lower pot assembly, and the pot cover is provided with a steam inlet connected to the upper pot, the steam pipe includes a vertical steam pipe accommodated in the upper pot assembly and a horizontal steam pipe accommodated in the pot cover, and the steam control valve is installed in the middle of the horizontal steam pipe.

[0009] According to one embodiment of the present invention, the vertical steam pipe is accommodated between the upper pot body and the upper pot, and the steam pipe also includes a first joint, a second joint and a third joint. The first joint is arranged at the base of the upper pot body and connects the steam pot outlet and the air inlet end of the vertical steam pipe. The second joint is arranged at the top of the upper pot body and connects the air outlet of the vertical steam pipe. The third joint is arranged on the pot cover corresponding to the second joint, the third joint connects the second joint and the air inlet of the horizontal steam pipe, and the air outlet of the horizontal steam pipe is connected to the steam inlet on the pot cover.

[0010] According to one embodiment of the present invention, the pot cover comprises an upper cover, an inner pot cover and an inner pot cover. The upper cover has a steam window. The inner pot cover is arranged on the inner side of the upper cover and is sealed to the upper pot, and the inner pot cover has a plurality of air holes. The inner pot cover is arranged on the inner side of the inner pot cover and is sealed to the upper pot. The steam in the steam channel enters between the inner pot cover and the inner pot cover and passes through the plurality of air holes on the inner pot cover and is discharged from the steam window.

[0011] According to one embodiment of the present invention, the upper cover includes a hollow cover body and a steam bin cover, the steam bin cover and the steam window are correspondingly arranged in the cover body, a steam bin is formed between the steam bin cover and the inner pot cover, and the air holes on the inner pot cover are arranged in the steam bin and away from the steam window.

[0012] According to one embodiment of the present invention, the lower end of the peripheral wall of the upper pot is retracted to form an accommodating space, and the bottom wall of the inner pot extends outward to form an inner pot bottom bracket. When the upper pot assembly is placed on the lower pot assembly, the inner pot bottom bracket is sealed and covered on the lower pot. The inner pot bottom bracket has an air hole connected to the lower pot, and the air pressure regulating assembly is connected to the lower pot through the air hole.

[0013] According to one embodiment of the present invention, the air pressure regulating assembly is arranged in the lower pot assembly, which includes an air pump, a solenoid valve, a three-way pipe and a connecting pipe. The air outlet of the solenoid valve is connected to the outside of the food cooking device through the air outlet pipe. The first end of the three-way pipe is connected to the air outlet of the air pump, the second end is connected to the air inlet of the solenoid valve, and the third end extends upward. When the upper pot body assembly is placed on the lower pot assembly, the third end of the three-way pipe is connected to the lower end of the air pressure connecting joint located on the base of the upper pot body. The connecting pipe is accommodated in the accommodating space, and the two ends of the connecting pipe are respectively connected to the upper end of the air pressure connecting joint and the air hole on the inner pot bottom bracket.

[0014] According to an embodiment of the present invention, the lower pot assembly includes a lower pot body, a lower pot and a lower pot. The lower pot is arranged in the lower pot body, and the air pressure regulating assembly and the steam generating assembly are arranged in the lower pot body and located outside the lower pot. The lower pot is detachably arranged in the lower pot.

[0015] According to an embodiment of the present invention, the lower pot assembly further comprises a pot body heating element which is arranged on the outer side of the bottom wall of the lower pot and fixed to the bottom wall of the lower pot body.

[0016] In summary, the bottom of the upper pot in the food steaming device provided by the present invention has a water delivery hole, and the bottom of the upper pot has a drain hole. A water delivery pipeline is arranged in the lower pot, and the air pressure regulating component presses the water in the lower pot into the upper pot or makes the water in the upper pot fall back to the lower pot by changing the pressure in the lower pot, so as to achieve one or more draining of rice. By setting a steam generating component, when the air pressure regulating component achieves the process of draining rice, the steam heating element heats the water in the steam pot to generate steam, and the generation of steam and the draining of rice are carried out synchronously. When the draining of rice is completed, the steam control valve is opened, and the steam enters the upper pot to steam the food placed in the upper pot, and the user does not need to wait for the generation of steam, which greatly saves the time of cooking. Since there are multiple drain holes on the bottom wall of the upper pot and there is a steam channel connected to the steam window between the upper pot and the upper pot, the steam passes through the food and the drain holes and enters the steam channel, and then is discharged from the steam window, so as to achieve the circulation of the whole steam.

[0017] 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

[0018] Figure 1 Shown is a schematic structural diagram of a food steaming device provided in one embodiment of the present invention.

[0019] Figure 2 Shown Figure 1 A partial schematic diagram of .

[0020] Figure 3 Shown Figure 1 sectional view of .

[0021] Figure 4 Shown Figure 3 A magnified schematic diagram of center A.

[0022] Figure 5 Shown Figure 3 A magnified schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0023] like Figures 1 to 3 As shown, the food steaming device provided in this embodiment includes an upper pot assembly 1, a lower pot assembly 2, a water delivery pipeline 3, an air pressure regulating assembly 4 and a steam generating assembly 5. The upper pot assembly 1 includes an upper pot body 11, an upper pot 12, an upper pot 13 and a pot cover 14. The upper pot 12 is arranged in the upper pot body 11 and has a water delivery hole 12-1 on the bottom wall. The upper pot 13 is detachably arranged in the upper pot 12 and the bottom wall of the upper pot has at least one drain hole 13-1, and a steam channel 10 is formed between the upper pot 13 and the upper pot 12. The pot cover 14 is opened or sealed to cover the upper pot 12 and the upper pot 13, and the pot cover 14 has a steam window 14-1 connected to the steam channel 10. The lower pot assembly 2 is detachably connected to the bottom of the upper pot assembly 1, and the lower pot assembly 2 has a lower pot 23 for holding water. One end of the water delivery pipe 3 extends into the lower pot 23 and is located below the liquid surface, and the other end extends out of the lower pot assembly 2 and is sealed and connected to the water delivery hole 12-1. The air pressure regulating assembly 4 is connected to the lower pot 23 and changes the pressure in the lower pot 23, presses the water in the lower pot 23 into the upper pot 13 through the water delivery pipe 3, the water delivery hole 12-1 and the drain hole 13-1, or makes the water in the upper pot 13 fall back to the lower pot 23. The steam generating assembly 5 includes a steam heating element 51, a steam pot 52, a steam pipe 53 and a steam control valve 54 installed on the steam pipe 53. The steam pipe 53 delivers the steam generated by the steam pot 52 to the upper pot 13 to steam the food in the upper pot 13.

[0024] like Figure 3As shown, in this embodiment, the bottom wall of the upper pot 13 has a plurality of drain holes 13-1 and the diameters of the plurality of drain holes 13-1 are smaller than the short axis of the rice grains, so the bottom wall of the upper pot 13 directly forms a grate for holding food. However, the present invention is not limited to this. In other embodiments, a drain hole with a larger diameter may be provided on the bottom wall of the upper pot, and a detachable grate may be placed in the upper pot.

[0025] In the food steaming device provided in this embodiment, the water delivery hole 12-1, the drain hole 13-1, the water delivery pipeline 3 and the air pressure regulating component 4 are set to achieve one or more draining. By setting the steam generating component 5, when the air pressure regulating component 4 is in the process of draining, the steam heating element 51 in the steam generating component 5 heats the water in the steam pot 52, so that it is quickly heated to produce water vapor. When the draining process is completed, the steam control valve 54 is opened, and the steam in the steam pipe 53 is passed into the upper pot 13, so that the food placed in the upper pot is quickly steamed. The draining and steam generation are carried out simultaneously, and the user does not need to wait for the steam to be generated, which greatly shortens the cooking time of the entire drained rice. Furthermore, in the existing food steaming device that can achieve multiple draining, since the water delivery pipeline and the steam pipeline are integrated, it takes a lot of time and energy to heat a large amount of water in the energy collecting cover to generate water vapor. In the food steaming device provided in this embodiment, the steam pipeline is independent of the water pipeline. The steam pot only needs to contain the amount of rice that can be steamed. This amount is much smaller than the water in the energy-gathering hood. Therefore, the steam component 4 generates steam very quickly and can be completely synchronized with the process of draining the rice. It also consumes very little electricity, which greatly saves the cost of steaming rice.

[0026] After the steam enters the upper pot 13, it penetrates the food and enters the steam channel 10 between the upper pot 13 and the upper pot 12 through the drain hole 13-1, and then is discharged from the steam window 14-1 on the pot cover 14. Figure 3 As shown, the pot cover 14 includes an upper cover 141, an inner pot cover 142 and an inner pot cover 143. The upper cover 141 has a steam window 14-1. The inner pot cover 142 is arranged on the inner side of the upper cover 141 and is sealed to the upper pot 12, and the inner pot cover 142 has a plurality of air holes 142-1. The inner pot cover 143 is arranged on the inner side of the inner pot cover 142 and is sealed to the upper pot 13. The steam in the steam channel 10 enters between the inner pot cover 143 and the inner pot cover 142 and passes through the plurality of air holes 142-1 on the inner pot cover 142, and is discharged from the steam window 14-1. Specifically, as shown in FIG. Figure 3 As shown, when the pot cover is closed, the inner pot cover 143 and the upper pot 13 are sealed together via a first sealing ring 61 , and the inner pot cover 142 is sealed together with the upper pot 12 via a second sealing ring 62 .

[0027] In this embodiment, if Figure 4As shown, since the steam inlet 14-2 connected to the upper pot 13 is formed in the upper cover 141, the upper cover 141 includes a hollow cover body 1411, and the transverse steam pipe is accommodated in the cover body 1411. In addition, the upper cover 141 also includes a steam bin cover 1412, and the steam bin cover 1412 is correspondingly arranged in the cover body 1411, and a steam bin 20 is formed between the steam bin cover 1412 and the inner pot cover 142. The arrangement of the steam bin cover 1412 allows the steam rising from the steam channel 10 to enter the steam bin 20 and be discharged from the steam window 14-1, and will not spread to other places in the hollow cover body 1411. In this embodiment, the air vent 142-1 arranged on the inner pot cover is located in the steam bin 20 and away from the steam window 14-1. This arrangement delays the transmission path of the steam, preventing the steam entering the upper pot 13 from being quickly discharged from the steam window 14-1, so that the steam can fully contact the food in the upper pot 13, thereby steaming the food. However, the present invention is not limited to this. In other embodiments, when the upper cover is not a hollow structure, there is no need to set a steam compartment cover.

[0028] like Figure 3 As shown, the steam pot 52 is arranged in the lower pot assembly 2, the steam inlet 14-2 connected to the upper pot 13 is formed with the upper cover 141, the steam pipe 53 includes a vertical steam pipe 531 accommodated in the upper pot assembly 1 and a horizontal steam pipe 532 accommodated in the upper cover 141, and the steam control valve 54 is installed in the middle of the horizontal steam pipe 532. Specifically, the steam pipe 53 also includes a first joint 533, a second joint 534 and a third joint 535. The first joint 533 is arranged at the base 111 of the upper pot body and connects the outlet of the steam pot 52 and the air inlet end of the vertical steam pipe 531. The second joint 534 is arranged at the top of the upper pot body 11 and connects the air outlet of the vertical steam pipe 531. The third joint 535 is arranged on the inner lining cover of the inner pot cover 142 corresponding to the second joint 534, the third joint 535 connects the second joint 534 and the air inlet of the horizontal steam pipe 532, and the air outlet of the horizontal steam pipe 532 is connected to the steam inlet 14-2 on the pot cover.

[0029] In the food steaming device provided in this embodiment, the air pressure regulating component 4, the steam heating element 51, and the steam pot 52 are all installed in the lower pot component 2, and all circuit controls are integrated in the lower pot component. The upper pot component is not electrified, and the user is safer to use. However, the present invention does not impose any restrictions on the installation position of the air pressure regulating component, the steam heating element, and the steam pot, and the arrangement of the steam pipe. In other embodiments, the steam heating element and the steam pot can also be arranged in the upper pot body, and the upper pot body component and the lower pot component are coupled and connected through an electrical connector.

[0030] In the existing food steaming device capable of realizing multiple draining of rice, the air holes are formed on the peripheral wall of the lower pot. This structure not only destroys the integrity of the lower pot, but also makes it difficult to position the ventilation connecting pipe with the lower pot. Therefore, the lower pot can only be fixed in the lower pot to solve the positioning problem, that is, the lower pot cannot be taken out of the lower pot. Figure 3 and Figure 5 As shown, the lower end of the peripheral wall 121 of the upper pot is retracted to form an accommodating space 30, and the bottom wall 122 of the inner pot extends outward to form an inner pot bottom bracket 123. When the upper pot assembly 1 is placed on the lower pot assembly 2, the inner pot bottom bracket 123 is sealed and covers the lower pot 23. The inner pot bottom bracket 123 has an air hole 123-1 connected to the lower pot 23, and the air pressure regulating assembly 4 is connected to the lower pot 23 through the air hole 123-1. The air hole 123-1 formed on the inner pot bottom bracket 123 not only makes the lower pot 23 a complete structure, but also does not need to consider the positioning problem. Therefore, the lower pot 23 and the lower pot 22 are detachable structures, and the user can take out the lower pot 23 for cleaning, which is very convenient to use.

[0031] Specifically, in this embodiment, if Figure 2 As shown, the air pressure regulating assembly 4 is arranged in the lower pot assembly 2, and includes an air pump 41, a solenoid valve 42, a three-way pipe 43 and a connecting pipe 44. The air outlet of the solenoid valve 42 is connected to the outside of the food cooking device through the air outlet pipe 421. The first end of the three-way pipe 43 is connected to the air outlet of the air pump 41, the second end is connected to the air inlet of the solenoid valve 42, and the third end extends upward. When the upper pot body assembly 1 is placed on the lower pot assembly 2, the third end of the three-way pipe 43 is connected to the lower end of the air pressure connecting joint 45 located on the base 111 of the upper pot body. The connecting pipe 44 is accommodated in the accommodating space 30, and the two ends of the connecting pipe 44 are respectively connected to the upper end of the air pressure connecting joint 45 and the air hole 123-1 on the inner pot bottom bracket.

[0032] In this embodiment, the lower pot assembly 2 includes a lower pot body 21, a lower pot 22, a lower pot 23 and a pot body heating element 24. The lower pot 22 is arranged in the lower pot body 21, and the air pressure regulating assembly 4, the steam heating element 51 and the steam pot 52 are all arranged in the lower pot body 21 and located on the outside of the lower pot 22. The lower pot 23 is detachably arranged in the lower pot 22. The pot body heating element 24 is arranged on the outside of the bottom wall of the lower pot 23 and fixed to the bottom wall of the lower pot body 22. The pot body heating element 24 can heat the water in the lower pot 23 when draining rice for multiple times. When the water is replenished for soaking rice for two or more times, water with a higher temperature is used for soaking rice. High-temperature water replenishment for soaking rice will not reduce the temperature of rice grains. After the water replenishment is completed, the steam can quickly steam the rice grains, further shortening the production time of drained rice. However, the present invention does not make any limitation to this. In other embodiments, the lower pot assembly may not include the lower pot and the pot body heating element, and cold water is used for replenishing water when replenishing water.

[0033] In this embodiment, the pot heating element 24 and the steam heating element 51 are both heating plates. However, the present invention does not make any limitation to this.

[0034] The working principle of the food steaming device provided in this embodiment is:

[0035] The user first injects an appropriate amount of water into the lower pot 23, places the water pipe 3 and places the upper pot assembly 1 on the lower pot assembly, the water pipe 3 is sealed and connected to the water hole 12-1, and the lower pot 23 is sealed and connected to the inner pot bottom bracket 123. The user puts the washed rice into the upper pot 13 and covers the pot cover 14. After pressing the starter, the control circuit board located in the lower pot body (due to the viewing angle, not shown in the figure) starts the air pump 41. The air pump 41 injects air into the lower pot 23 through the air inlet 123-1, the air pressure in the lower pot 23 increases, and the water in the lower pot 23 enters the upper pot 13 through the water pipe 3, the water hole 12-1 and the drain hole 13-1, submerging the rice grains in the upper pot 13 and maintaining for a period of time to achieve soaking the rice.

[0036] When the air pump 41 is turned on, the steam heating element 51 and the pot body heating element 24 are turned on at the same time, and the water in the steam pot 52 is steamed to generate steam. When the rice is soaked, the air pump 41 is turned off, the solenoid valve 42 and the steam control valve 54 are opened, the pressure in the lower pot 23 is reduced, and the water in the upper pot 13 falls back into the lower pot 23 through the water delivery pipe 3, the water delivery hole 12-1 and the drain hole 13-1 under the action of gravity. At the same time, the steam control valve 54 opens the transverse steam pipe 52, and the steam enters the upper pot 13 through the steam inlet 14-2 and fully contacts the rice grains in the upper pot 13 to heat the rice grains. The steam penetrates the rice grains and the drain hole 13-1 into the steam channel 10, and then enters the steam bin 20, and is discharged from the pot body.

[0037] After steaming for a period of time, the air pump 41 is started again and the electromagnetic valve 42 and the steam control valve 54 are closed at the same time. The water heated by the pot body heating element 24 in the lower pot 23 is pressed into the upper pot 13 again, submerging the rice grains again, and replenishing the rice grains with high temperature during the cooking process. Thereafter, the air pump 41 is turned off, and the electromagnetic valve 42 is opened to drain the water again. The steam control valve 54 is opened to continue to generate steam until the rice in the upper pot 13 is cooked. However, the present invention does not impose any limitation on the production process of draining rice. In other embodiments, water replenishment can also be performed multiple times.

[0038] In summary, the bottom of the upper pot in the food steaming device provided by the present invention has a water delivery hole, and the bottom of the upper pot has a drain hole. A water delivery pipeline is arranged in the lower pot, and the air pressure regulating component presses the water in the lower pot into the upper pot or makes the water in the upper pot fall back to the lower pot by changing the pressure in the lower pot, so as to achieve one or more draining of rice. By setting a steam generating component, when the air pressure regulating component achieves the process of draining rice, the steam heating element heats the water in the steam pot to generate steam, and the generation of steam and the draining of rice are carried out synchronously. When the draining of rice is completed, the steam control valve is opened, and the steam enters the upper pot to steam the food placed in the upper pot, and the user does not need to wait for the generation of steam, which greatly saves the time of cooking. Since there are multiple drain holes on the bottom wall of the upper pot and there is a steam channel connected to the steam window between the upper pot and the upper pot, the steam passes through the food and the drain holes and enters the steam channel, and then is discharged from the steam window, so as to achieve the circulation of the whole steam.

[0039] 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 food cooking device, characterized in that: include: The upper pot assembly includes: Upper pot body; The upper pot is arranged in the upper pot body and has a water delivery hole on the bottom wall; The upper pot is detachably arranged in the upper pot and has at least one drain hole on its bottom wall, so that a steam channel is formed between the upper pot and the upper pot; A pot cover is opened or sealed to cover the upper pot and the upper pot, and the pot cover is provided with a steam window connected to the steam channel; A lower pot assembly is detachably connected to the lower part of the upper pot assembly, wherein the lower pot assembly has a lower pot for holding water; A water delivery pipe, one end of which extends into the lower pot and is located below the liquid surface, and the other end extends out of the lower pot assembly and is sealed and connected to the water delivery hole; The air pressure regulating component is connected to the lower tank and changes the pressure in the lower tank, so that the water in the lower tank is pressed into the upper tank through the water delivery pipe, the water delivery hole and the drain hole, or the water in the upper tank falls back to the lower tank; The steam generating assembly includes a steam heating element, a steam pot, a steam pipe and a steam control valve installed on the steam pipe. The steam pipe transmits the steam generated by the steam pot to the upper pot to steam the food in the upper pot. When the air pressure regulating assembly is in the process of draining rice, the steam heating element in the steam generating assembly heats the water in the steam pot to generate steam synchronously. The steam enters the upper pot, penetrates the food and enters the steam channel between the upper pot and the upper pot through the drain hole, and then is discharged from the steam window on the pot cover. The steam cooker is arranged in the lower pot assembly, the pot cover is provided with a steam inlet connected to the upper pot, the steam pipe comprises a vertical steam pipe accommodated in the upper pot assembly and a transverse steam pipe accommodated in the pot cover, and the steam control valve is installed in the middle of the transverse steam pipe; the pot cover comprises an upper cover, an inner pot cover and an inner pot cover; the upper cover has a steam window; the inner pot cover is arranged on the inner side of the upper cover and sealed to the upper pot, and the inner pot cover has a plurality of air holes; the inner pot cover is arranged on the inner side of the inner pot cover and sealed to the upper pot; wherein the steam in the steam channel enters between the inner pot cover and the inner pot cover, passes through the plurality of air holes on the inner pot cover, and is discharged from the steam window.

2. The food cooking device according to claim 1, characterized in that: The bottom wall of the upper pot has a plurality of drainage holes, and the bottom wall of the upper pot forms a grate for holding food; or the bottom wall of the upper pot has at least one drainage hole, and a grate for holding food is placed inside the upper pot.

3. The food cooking device according to claim 1, characterized in that: The vertical steam pipe is accommodated between the upper pot body and the upper pot, and the steam pipe also includes: A first joint is provided at the base of the upper pot body and connects the outlet of the steam pot and the air inlet end of the vertical steam pipe; A second joint, which is disposed on the top of the upper pot body and is connected to the gas outlet of the vertical steam pipe; and The third joint is arranged on the pot cover corresponding to the second joint. The third joint is connected to the second joint and the air inlet of the transverse steam pipe, and the air outlet of the transverse steam pipe is connected to the steam inlet on the pot cover.

4. The food cooking device according to claim 1, characterized in that: The upper cover comprises a hollow cover body and a steam bin cover, wherein the steam bin cover and the steam window are arranged in the cover body correspondingly, a steam bin is formed between the steam bin cover and the inner pot cover, and the air vents on the inner pot cover are arranged in the steam bin and away from the steam window.

5. The food cooking device according to claim 1, characterized in that: The lower end of the peripheral wall of the upper pot is retracted to form an accommodating space, and the bottom wall of the inner pot extends outward to form an inner pot bottom bracket. When the upper pot assembly is placed on the lower pot assembly, the inner pot bottom bracket is sealed and covered with the lower pot. The inner pot bottom bracket is provided with an air hole connected to the lower pot, and the air pressure regulating assembly is connected to the lower pot through the air hole.

6. The food cooking device according to claim 5, characterized in that: The air pressure regulating assembly is arranged in the lower pot assembly, and comprises: air pump; A solenoid valve, wherein an air outlet of the solenoid valve is connected to the outside of the food steaming device through an air outlet pipe; A three-way pipe, the first end of which is connected to the air outlet of the air pump, the second end of which is connected to the air inlet of the solenoid valve, and the third end of which extends upwards. When the upper pot assembly is placed on the lower pot assembly, the third end of the three-way pipe is connected to the lower end of the air pressure connection joint located on the base of the upper pot body; The connecting pipe is accommodated in the accommodating space, and the two ends of the connecting pipe are respectively connected with the upper end of the air pressure connecting joint and the air hole on the inner pot bottom bracket.

7. The food cooking device according to claim 1, characterized in that: The lower pot assembly comprises: Lower pot body; The lower pot is arranged in the lower pot body, and the air pressure regulating component and the steam generating component are arranged in the lower pot body and located outside the lower pot; The lower pot is detachably arranged in the lower pot.

8. The food cooking device according to claim 7, characterized in that: The lower pot assembly also includes a pot body heating element which is arranged on the outer side of the bottom wall of the lower pot and fixed to the bottom wall of the lower pot body.

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