CN106923653B

CN106923653B - Steam cooking device

Info

Publication number: CN106923653B
Application number: CN201710297639.4A
Authority: CN
Inventors: 邱向阳; 王巍; 卿光华; 胡志雄; 林炳鑫
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2022-05-31
Anticipated expiration: 2037-04-28
Also published as: CN106923653A

Abstract

The invention discloses a steam cooking device which comprises a cavity and a steam generation system. The steam generation system comprises a steam generator and a superheated steam heating disc, the steam generator is arranged outside the cavity, the superheated steam heating disc is arranged on the outer surface of the bottom plate of the cavity, the steam generator is communicated with the superheated steam heating disc, and the superheated steam heating disc is communicated with the cavity and is used for carrying out superheated heating on steam generated by the steam generator and then inputting the steam into the cavity. In the steam cooking device of the embodiment of the invention, the steam input into the cavity is overheated and heated by the overheated steam heating plate, so that the temperature of the steam in the cavity is higher, the heating speed of food is further improved, and the cooking time is reduced.

Description

Steam cooking device

Technical Field

The invention relates to the technical field of household appliances, in particular to a steam cooking device.

Background

In the related art, the electric steaming oven is mainly heated by a heat generating plate to generate steam, and the steam is directly used for cooking food. The water vapor generated by the method is generally about 100 ℃, even can not reach 100 ℃, the food heating speed is slow, and the cooking time is long.

Disclosure of Invention

The present invention has been made to solve at least one of the technical problems occurring in the related art. To this end, embodiments of the present invention need to provide a steam cooking device.

The steam cooking device comprises a cavity and a steam generating system, wherein the steam generating system comprises a steam generator and an overheated steam heating plate, the steam generator is arranged outside the cavity, the overheated steam heating plate is arranged on the outer surface of a bottom plate of the cavity, the steam generator is communicated with the overheated steam heating plate, and the overheated steam heating plate is communicated with the cavity and used for inputting steam generated by the steam generator into the cavity after being overheated and heated.

In the steam cooking device of the embodiment of the invention, the steam input into the cavity is overheated and heated by the overheated steam heating plate, so that the temperature of the steam in the cavity is higher, the heating speed of food is further improved, and the cooking time is reduced.

In some embodiments, the steam generator includes a heating box body and a first heating pipe, the heating box body is provided with a heating chamber, a first opening and a second opening which are communicated with the heating chamber, the first opening and the second opening are arranged at intervals, the second opening is connected with the superheated steam heating plate, and the first heating pipe is at least partially located in the heating chamber.

In certain embodiments, a baffle is disposed within the heating chamber between the first heating duct and the first opening, and between the first heating duct and the second opening.

In some embodiments, the second opening is located in an upper half of the heating chamber.

In some embodiments, the steam generator includes a first thermostat disposed on an outer surface of the heating box, the first thermostat configured to interrupt operation of the first heating pipe when a surface temperature of the heating box is greater than a first set threshold.

In some embodiments, the steam cooking device includes a first temperature sensor, a controller and a water injection device, the water injection device is connected with the heating box body, the first temperature sensor is connected with the controller, the first temperature sensor is used for detecting the temperature in the heating box body, and the controller is used for controlling the water injection device to add water to the heating box body when the temperature in the heating box body is greater than a second set threshold value.

In some embodiments, the superheated steam heating plate includes a second heating pipe, a steam guide pipe, and a heating plate, the second heating pipe and the steam guide pipe being at least partially disposed in the heating plate, the steam guide pipe communicating the steam generator and the cavity, the heating plate being disposed on an outer surface of the base plate.

In some embodiments, the superheated steam heating plate includes a second temperature controller disposed on a surface of the heating plate, and the second temperature controller is configured to interrupt the second heating pipe when a surface temperature of the heating plate is greater than a third set threshold.

In some embodiments, the steam cooking device includes a second temperature sensor and a controller, the second temperature sensor is connected to the controller, the second temperature sensor is used for detecting the temperature in the heating plate, and the controller is used for controlling the second heating pipe to stop working when the temperature in the heating plate is greater than a fourth set threshold value.

In certain embodiments, the second heating pipe comprises a second heating pipe section located in the heating pan, the steam duct comprises a duct section located in the heating pan, the duct section comprises a first sub-duct section and a second sub-duct section spaced apart from each other, the second heating pipe section comprises a sub-heating pipe section located in a gap between the first sub-duct section and the second sub-duct section, the sub-heating pipe section is in thermal contact with the first sub-duct section and the second sub-duct section.

In certain embodiments, the heating pan is an aluminum pan, and the second heating tube and the steam guiding tube are at least partially located in the heating pan by casting.

In some embodiments, the soleplate comprises a recess, and the superheated steam heat-generating pan is disposed at an outer surface of the recess.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view schematically illustrating a steam cooking apparatus according to an embodiment of the present invention.

Fig. 2 is another perspective view schematically illustrating a steam cooking device according to an embodiment of the present invention.

Fig. 3 is a schematic sectional view of a steam cooking apparatus according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a steam generator according to an embodiment of the present invention.

Fig. 5 is an exploded perspective view of a steam generator according to an embodiment of the present invention.

Fig. 6 is a perspective view of a superheated steam heat-generating tray according to an embodiment of the present invention.

Fig. 7 is a perspective exploded view schematically showing a superheated steam heat-generating tray according to an embodiment of the present invention.

Fig. 8 is a schematic configuration diagram of a steam generation system according to an embodiment of the present invention.

Fig. 9 is a module view of a steam generator according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1, 2 and 8, a steam cooking device 100 according to an embodiment of the present invention includes a cavity 10 and a steam generating system 20. The steam generating system 20 comprises a steam generator 22 and a superheated steam heating plate 24, the steam generator 22 is arranged outside the cavity 10, the superheated steam heating plate 24 is arranged on the outer surface of the bottom plate 14 of the cavity 10, the steam generator 22 is communicated with the superheated steam heating plate 24, and the superheated steam heating plate 24 is communicated with the cavity 10 and is used for carrying out superheated heating on steam generated by the steam generator 22 and then inputting the steam into the cavity 10.

In the steam cooking device 100 according to the embodiment of the present invention, the steam input into the cavity 10 is superheated by the superheated steam heating plate 24, so that the temperature of the steam in the cavity 10 is high, the heating speed of the food is increased, and the cooking time is reduced.

Specifically, the cavity 10 of the steam cooking device 100 may have a cylindrical or rectangular parallelepiped shape, etc., without limitation. In the present embodiment, the chamber 10 has a rectangular parallelepiped shape. Thus, the cavity 10 has a simple structure and is easy to manufacture.

In the embodiment of the present invention, the steam generator 22 is disposed on the outer surface of the side plate 12 of the cavity 10. For example, in the orientation shown in FIG. 1, the steam generator 22 is disposed on the outer surface of the right side plate 12 of the cavity 10.

Further, the superheated steam heating plate 24 is in thermal contact with the outer surface of the bottom plate 14, on one hand, steam generated by the steam generator 22 can be introduced into the superheated steam heating plate 24 for superheated heating, and the steam after the superheated heating is input into the cavity 10 again; on the other hand, the superheated steam heating plate 24 can heat the bottom plate 14, so that the condensed water collected on the inner surface of the bottom plate 14 in the cavity 10 is reheated into steam, thereby improving the heating efficiency and reducing the water accumulated at the bottom of the cavity 10.

In the embodiment of the present invention, the superheated heating means that the superheated steam heating plate 24 reheats the steam generated by the steam generator 22 so that the temperature of the steam may reach about 120 ℃. Therefore, the heating speed of the food in the cavity 10 can be effectively improved, the waiting time of a user is reduced, the water loss during the heating of the food is reduced, and the taste of the food is kept.

Referring to fig. 4, 5 and 8, in some embodiments, the steam generator 22 includes a heating box 222 and a first heating pipe 224, and a heating chamber 2222, a first opening 2224 and a second opening 2226 are disposed in the heating box 222 and are communicated with the heating chamber 2222. The first opening 2224 and the second opening 2226 are spaced apart from each other, and the second opening 2226 is connected to the superheated steam heat-generating tray 24. The first heating tube 224 is at least partially located within the heating chamber 2222.

Thus, water can be added into the heating chamber 2222 through the first opening 2224, so that sufficient water storage in the heating box body 222 is ensured, and dry burning of the heating box body 222 is avoided. Steam generated by heating water in the heating chamber 2222 enters the superheated steam heat-generating tray 24 through the second opening 2226 to be secondarily heated, thereby increasing the temperature of the steam inputted into the cavity 10.

Specifically, in the present embodiment, the heating case 222 has a rectangular parallelepiped shape. The heating box body 222 includes a heating box 225 and a heating box cover 227. The heating box cover 227 covers the heating box 225 and is tightly coupled to the heating box 225 to form a sealed heating chamber 2222.

In the present embodiment, the first heating pipe 224 has a ring structure. Thus, the first heating pipe 224 with a longer length can be placed in the heating chamber 2222 with a smaller space, increasing the speed of the temperature rise of the stored water.

Specifically, the first heating pipe 224 is installed inside the heating chamber 2222 at a position near the bottom surface 2225 of the heating chamber 2222.

Thus, according to the principle that the hot water rises and the cold water falls, the water in the heating chamber 2222 flows in an up-and-down circulation manner, so that the rising speed of the water temperature is increased, the steam generation rate is increased, and the energy consumed by the steam cooking device 100 is saved.

In the present embodiment, the first heating pipe 224 does not contact the bottom surface 2225. So, avoided not having under the retaining or the less condition that impounds, first heating pipe 224 heats heating box body 222 for heating box body 222 high temperature causes the condition of potential safety hazard. At the same time, the life of the first heating pipe 224 is also affected.

Specifically, the first heating tube 224 being at least partially located in the heating chamber 2222 includes the following: 1) the first heating tube 224 is located entirely within the heating chamber 2222; 2) a portion of the first heating pipe 224 is located in the heating chamber 2222, and a portion of the first heating pipe 224 is located outside the heating chamber 2222.

In the first case, the first heating pipe 224 is completely located in the heating chamber 2222, and the heat generated by the first heating pipe 224 is completely used for heating the stored water in the heating box body 222, so that the speed of generating steam by the stored water is increased, and the efficiency of heating food by the steam cooking device 100 is further increased.

In the second case, a portion of the first heating pipe 224 is used to heat the stored water within the heating chamber 2222, and a portion of the first heating pipe 224 is disposed outside the heating chamber 2222, which facilitates connection of the first heating pipe 224 to an external circuit.

In an embodiment of the present invention, the bottom surface 2225 of the heating chamber 2222 is also provided with a drain 227.

Therefore, after the steam cooking device 100 is used, the water in the heating box body 222 can be discharged through the water outlet 227, so that the situation that the water is too long in the heating box body 222 and deposits on the first heating pipe 224, and the first heating pipe 224 cannot emit heat and bursts when working is avoided.

In certain embodiments, a baffle 2228 is disposed within the heating chamber 2222 between the first heat pipe 224 and the first opening 2224, and between the first heat pipe 224 and the second opening 2226.

In this way, the baffle 2228 can effectively prevent the water in the heating chamber 2222 from splashing to the first opening 2224 and the second opening 2226 when the water is boiling, so that the first opening 2224 and the second opening 2226 are blocked, and the steam is prevented from being delivered to the superheated steam heating plate 24.

In some embodiments, second opening 2226 is located in an upper half of heating chamber 222. In this manner, the heating chamber 2222 is enabled to hold more water, allowing the steam cooking device to generate more steam.

In an embodiment of the present invention, the first opening 2224 and the second opening 2226 are located at the top of the heating chamber 2222. The baffles 2228 include a horizontal baffle 2221 and an inclined baffle 2223, the horizontal baffle 2221 and the inclined baffle 2223 are sequentially arranged in the direction from the first heating pipe 224 to the second opening 2226, and the inclined baffle 2223 is inclined toward the horizontal baffle 2221.

As such, the condensed water on the inclined baffle 2223 inside the heating chamber 2222 can slide down the inclined baffle 2223 into the water, continuing to be used for steam generation. Further, providing the inclined baffle 2223 at a position close to the second opening 2226 and the horizontal baffle 2221 at a position far from the second opening 2226 also makes it easy to return the condensed water of the steam on the inclined baffle 2223 and the horizontal baffle 2221 to the water relatively quickly.

Specifically, the horizontal and

inclined barriers

2221 and 2223 may be fixed to the inner surface of the heating box 222 through an integral molding process, for example, the heating box 222, the horizontal and

inclined barriers

2221 and 2223 may be made of high temperature resistant plastic, and the heating box 222 with the horizontal and

inclined barriers

2221 and 2223 may be manufactured directly through the integral molding process.

In the present embodiment, the inclined barrier 2223 is fixed to the inner surface of the heating box body 222 near the second opening 2226.

As such, the inclined baffle 2223 further prevents the accumulated water in the heating chamber 2222 from splashing to the second opening 2226 after boiling, which would block the second opening 2226 and affect the delivery of the steam in the heating chamber 2222 to the superheated steam heating plate 24.

In some embodiments, the steam generator 22 includes a first thermostat 226, the first thermostat 226 is disposed on an outer surface of the heating case 222, and the first thermostat 226 is used to interrupt the operation of the first heating pipe 224 when the surface temperature of the heating case 222 is greater than a first set threshold.

Specifically, when the circuit is connected, the first thermostat 226 and the first heating pipe 224 are connected in series. When the temperature of the surface of the heating box 222 is higher than the first predetermined threshold, the first thermostat 226 can timely disconnect the power supply circuit of the first heating pipe 224.

In this embodiment, there are two first thermostats 226. The two first thermostats 226 are spaced apart from each other on the heating box body 222, so that the temperatures of different positions on the surface of the heating box body 222 can be detected, and the reliability of the first thermostats 226 can be ensured. The two first temperature controllers 226 may be connected in parallel and then connected in series with the first heating pipe 224.

In some embodiments, the steam cooking device 100 further includes a first temperature sensor 228, a controller 26, and a water injector 28, the water injector 28 is connected to the heating box 222, the first temperature sensor 228 is connected to the controller 26, the first temperature sensor 228 is configured to detect a temperature inside the heating box 222, and the controller 26 is configured to control the water injector 28 to add water to the heating box 222 when the temperature inside the heating box 222 is greater than a second set threshold.

Thus, the first temperature sensor 228 can be used to control the water level, when the water level drops, a part of the first heating pipe 224 burns dry, the temperature around the first heating pipe 224 rises, and the controller 26 controls the heating device to fill the heating box body 222 with water according to the temperature detected by the first temperature sensor 228.

In the present example, the steam cooking device 100 includes a first temperature sensor 228 and a first temperature controller 226, and the first temperature sensor 228 and the first temperature controller 226 are respectively installed at opposite sides of the heating box body 222.

Therefore, the mutual interference between the first temperature sensor 228 and the first thermostat 226 is avoided, and the accuracy of the measurement results of the two is improved. The first temperature sensor 228 and the first thermostat 226 are provided at the same time, and can also play a role of double protection. In this embodiment, the first set threshold may be set larger than the second set threshold.

The water injector 28 should not inject too much water into the heating chamber 2222, which would result in a small space for steam to evaporate in the heating chamber 2222, and thus is not conducive to steam generation. In this embodiment, the water level stored within the heating chamber 2222 is up to half the height of the heating chamber 2222 and completely submerges the first heating tube 224 and the first temperature sensor 228 without contacting the horizontal baffle 2221. Thus, a better steam generation effect can be achieved.

Specifically, the controller 26 may be of a single-chip structure. Thus, the principle is simple and easy to control. In addition, the controller 26 may control the overall operation of the steam cooking device, for example, to control the steam cooking device to cook according to parameters set by a user.

Specifically, the water filling means 28 may include a water pump and a water tank. Thus, the water injection device 28 is simple in structure and easy to implement. The water outlet of the water tank is connected with the water inlet of the water pump, and the water outlet of the water pump is connected with the first opening 2224.

In an embodiment of the present invention, the water tank may be a built-in water tank of the steam cooking apparatus 100. The controller 26 may control the water pump to be turned on and off to allow the water injection device 28 to inject water into the heating case 222 and to stop the injection of water into the heating case 222. The water injection quantity is determined by the starting time of the water pump.

Referring to fig. 6 and 7 together, in some embodiments, the superheated steam heating plate 24 includes a second heating pipe 242, a steam guide pipe 244, and a heating plate 246, the second heating pipe 242 and the steam guide pipe 244 are at least partially disposed in the heating plate 246, the steam guide pipe 244 communicates the steam generator 22 and the chamber 10, and the heating plate 246 is disposed on the outer surface of the soleplate 14.

Therefore, after the steam generated by the steam generator 22 enters the steam guide pipe 244, the second heating pipe 242 heats the steam for the second time, which further increases the temperature of the steam, so that the steam can more rapidly heat the food after entering the cavity 10. The heating plate 246 provides a stable support and better heat transfer for the second heating pipe 242 and the steam guide pipe 244. Meanwhile, the heating plate 246 has a high temperature, and can transfer heat to the inside of the cavity 10 through the bottom plate, so as to heat the condensed water on the inner surface of the bottom plate 14 into steam, thereby improving the heating efficiency.

Specifically, the second heating duct 242 and the steam guiding duct 244 are at least partially disposed in the heating pan 246, including the following: 1) the second heating pipe 242 and the steam guiding pipe 244 are all disposed in the heating pan 246; 2) the second heating pipe 242 is disposed entirely within the heating pan 246, a portion of the steam duct 244 is disposed within the heating pan 246, and a portion of the steam duct 244 is not disposed within the heating pan 246; 3) part of the second heating duct 242 is disposed in the heating pan 246, part of the second heating duct 242 is not disposed in the heating pan 246, part of the steam guiding duct 244 is disposed in the heating pan 246, and part of the steam guiding duct 244 is not disposed in the heating pan 246; 4) a portion of the second heating duct 242 is disposed in the heating pan 246, a portion of the second heating duct 242 is not disposed in the heating pan 246, and the steam guiding duct 244 is entirely disposed in the heating pan 246.

In addition, according to the principle that the hot air rises, the heating plate 246 is provided on the outer surface of the base plate 14, so that the heat on the heating plate 246 can be effectively utilized, and the loss of heat can be reduced.

In certain embodiments, the controller 26 may also control the operation of the second heating duct 242.

In some embodiments, the superheated steam heat-generating tray 24 includes a second thermostat 248, the second thermostat 248 being disposed on a surface of the heating tray 246, the second thermostat 248 being configured to interrupt operation of the second heating pipe 242 when the surface temperature of the heating tray 246 is greater than a third set threshold.

Therefore, the second temperature controller 248 plays a safety protection role, and the service life of the heating plate 24 is ensured.

Specifically, when the circuit is connected, the second thermostat 248 and the second heating pipe 242 are connected in series. When the temperature of the surface of the heating plate 246 is greater than the third predetermined threshold, the second thermostat 248 can timely disconnect the power supply circuit of the second heating pipe 242.

Specifically, in the present embodiment, there are two second thermostats 248. Two second thermostats 248 are spaced apart on the heating plate 246 so that the temperatures of different positions on the surface of the heating plate 246 can be detected and the reliability of the second thermostats 248 can be ensured. The two second temperature controllers 248 may be connected in parallel and then connected in series with the second heating pipe 242.

Specifically, a groove-shaped mounting portion 241 is defined on the surface of the heating plate 246, and the second thermostat 248 is mounted on the mounting portion 241.

Thus, the second heating pipe 242 is stably installed. Meanwhile, the overall thickness of the superheated steam heating plate 24 is small, preventing the superheated steam heating plate 24 from occupying too much space of the steam cooking device 100.

In some embodiments, the steam cooking device 100 includes a second temperature sensor 234 and the controller 26, the second temperature sensor 234 is connected to the controller 26, the second temperature sensor 234 is configured to detect the temperature in the heating plate 246, and the controller 26 is configured to control the second heating pipe 242 to stop operating when the temperature in the heating plate 246 is greater than a fourth set threshold. In this manner, the controller is enabled to control the operation of the second heating tube to avoid excessive humidity within heating plate 246. In the present example, the steam cooking device 100 includes a second temperature sensor 234 and a second thermostat 248, and the second temperature sensor 234 and the second thermostat 248 are installed on the heating plate 246 at intervals. The probe of the second temperature sensor 234 may be disposed within the heating disk 246.

Therefore, the mutual interference between the second temperature sensor 234 and the second temperature controller 248 is avoided, and the accuracy of the measurement results of the two is improved. The second temperature sensor 234 and the second thermostat 248 are provided at the same time, and can also play a role of double protection. In this embodiment, the third set threshold may be set larger than the fourth set threshold.

In some embodiments, the second heating pipe 242 includes a second heating pipe element 2422 positioned within the heating pan 246, the steam duct 244 includes a duct element 245 positioned within the heating pan 246, the duct element 245 includes a first sub-duct element 2452 and a second sub-duct element 2454 that are spaced apart from each other, the second heating pipe element 2422 includes a sub-heating pipe element 2424, the sub-heating pipe element 2424 is positioned in a gap between the first sub-duct element 2452 and the second sub-duct element 2454, and the sub-heating pipe element 2424 is in thermal contact with the first sub-duct element 2452 and the second sub-duct element 2454.

Thus, the sub-heating pipe part 2424 directly transfers heat to the first sub-duct part 2452 and the second sub-duct part 2454 at two sides, so as to rapidly heat the steam in the duct part 245, raise the temperature of the steam to about 120 ℃, and achieve rapid heating of the food in the cavity 10.

Specifically, the steam nozzle 244 may be formed by bending a nozzle loop, with the first sub-nozzle member 2452 and the second sub-nozzle member 2454 being generally circular. One end of the steam guide pipe 244 is communicated with the steam generator 22, and the other end is communicated with the chamber 10. The steam guide pipe 244 may be made of a metal material.

Specifically, the second heat pipe 242 may be formed by bending one heat pipe, and the sub-heater part 2424 is attached to the duct part 245.

Preferably, sub-heater tube elements 2424 are substantially circular. In this way, the length of the sub-heating pipe part 2424 attached to the duct guiding part 245 is increased, the utilization rate of heat generated by the sub-heating pipe part 2424 is increased, energy is saved, and the working efficiency of the steam cooking device 100 is also improved.

In certain embodiments, the heating pan 246 is an aluminum pan, and the second heating tube 242 and the steam guide tube 244 are at least partially positioned within the heating pan 246 by casting.

Thus, the second heating pipe 242 and the steam guide pipe 244 can be stably installed in the heating plate 246, and are not easily broken due to collision. Meanwhile, the second heating pipe 242 and the steam guiding pipe 244 are connected with the heating plate 246 more tightly, so that the heat transfer is ensured.

Furthermore, the embodiment in which the second heating duct 242 and the steam guiding duct 244 are at least partially located in the heating pan 246 has been more fully described above and will not be described further herein.

Referring to fig. 3 and 8, in some embodiments, the soleplate 14 includes a recess 142, and the superheated steam heat-generating plate 24 is disposed on an outer surface of the recess 142.

In this way, after the steam in the cavity 10 is condensed, the steam is accumulated on the concave portion 142, the superheated steam heating plate 24 on the outer surface of the concave portion 142 heats the accumulated water on the concave portion 142 to become steam, and the food in the cavity 10 is heated again, so that the water resource is effectively utilized. Meanwhile, the condensed water is accumulated in the concave portion 142, so that the cavity 10 can be cleaned conveniently after the use of the user is finished, a wiping effect is realized, and the use of the user is facilitated.

Specifically, the heating process of the steam cooking device 100 of the embodiment of the present invention is substantially as follows:

injecting a suitable amount of water into the heating chamber 2222 through the first opening 2224, preferably to submerge the first heating tube 224; starting the steam cooking device 100; the first heating pipe 224 is operated, and the water in the heating chamber 2222 is heated to evaporate and enter the steam guiding pipe 244 along the second opening 2226; the second heating pipe 242 heats and works to heat the steam in the steam guide pipe 244, so that the steam reaches a superheated state; the steam in the superheated state enters the cavity 10 to heat the food; after the heating is completed, the second heating pipe 242 and the first heating pipe 224 are closed, and the drain port is opened to drain the water in the heating chamber 2222.

In the description of the present specification, reference to the description of "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.

Claims

1. A steam cooking device is characterized by comprising a cavity and a steam generating system, wherein the steam generating system comprises a steam generator and a superheated steam heating plate, the steam generator is arranged on the outer surface of a side plate of the cavity, the superheated steam heating plate is arranged on the outer surface of a bottom plate of the cavity, the steam generator is communicated with the superheated steam heating plate, and the superheated steam heating plate is communicated with the cavity and is used for carrying out superheated heating on steam generated by the steam generator and then inputting the steam into the cavity; wherein the content of the first and second substances,

superheated steam heating dish includes second heating pipe, steam honeycomb duct and heating plate, the second heating pipe with the steam honeycomb duct sets up at least partially in the heating plate, steam honeycomb duct intercommunication steam generator with the cavity, the heating plate sets up the surface of bottom plate.

2. The steam cooking device of claim 1, wherein the steam generator comprises a heating box body and a first heating pipe, a heating chamber, a first opening and a second opening are arranged in the heating box body, the first opening and the second opening are communicated with the heating chamber, the first opening and the second opening are arranged at intervals, the second opening is connected with the superheated steam heating plate, and the first heating pipe is at least partially positioned in the heating chamber.

3. The steam cooking device of claim 2, wherein a baffle is disposed within the heating chamber between the first heating duct and the first opening and between the first heating duct and the second opening.

4. The steam cooking device of claim 2 wherein said second opening is located in an upper half of said heating cavity.

5. The steam cooking device of claim 2, wherein the steam generator includes a first thermostat disposed on an outer surface of the heating box, the first thermostat configured to interrupt operation of the first heating pipe when a surface temperature of the heating box is greater than a first set threshold.

6. The steam cooking device of claim 1, wherein the steam cooking device comprises a first temperature sensor, a controller, and a water injector, the water injector is connected to the heating box, the first temperature sensor is connected to the controller, the first temperature sensor is configured to detect a temperature in the heating box, and the controller is configured to control the water injector to add water to the heating box when the temperature in the heating box is greater than a second predetermined threshold.

7. The steam cooking device of claim 1, wherein the superheated steam heating plate includes a second thermostat provided on a surface of the heating plate, the second thermostat being configured to interrupt operation of the second heating pipe when a surface temperature of the heating plate is greater than a third set threshold.

8. The steam cooking device of claim 1, wherein the steam cooking device comprises a second temperature sensor and a controller, the second temperature sensor is connected to the controller, the second temperature sensor is used for detecting the temperature in the heating plate, and the controller is used for controlling the second heating pipe to stop working when the temperature in the heating plate is larger than a fourth set threshold value.

9. The steam cooking device of claim 1, wherein the second heating pipe includes a second heating pipe section positioned in the heating pan, the steam duct includes a duct section positioned in the heating pan, the duct section includes first and second sub-duct sections spaced apart from each other, the second heating pipe section includes a sub-heating pipe section positioned in a gap between the first and second sub-duct sections, the sub-heating pipe section is in thermal contact with the first and second sub-duct sections.

10. The steam cooking device of claim 1, wherein the heating plate is an aluminum plate, and the second heating tube and the steam guiding tube are at least partially positioned in the heating plate by casting.

11. The steam cooking device of claim 1, wherein the base plate includes a recess, and the superheated steam heat-generating plate is disposed at an outer surface of the recess.