Multifunctional heating device and cooking appliance

Abstract

The present invention discloses a multifunctional heating device and cooking appliance, comprising: a first integrated steam-bake heating tube, the first integrated steam-bake heating tube being hollow; a second integrated steam-bake heating tube, the second integrated steam-bake heating tube being hollow and connected to the first integrated steam-bake heating tube via a conduit; a water supply tank, the water supply tank being used to provide a water source for the first integrated steam-bake heating tube; a water pump, the water pump being connected to the water supply tank via a water inlet pipe and connected to the first integrated steam-bake heating tube via a water delivery pipe; and a steam outlet, the steam outlet being connected to the second integrated steam-bake heating tube via an air outlet pipe for ejecting hot steam through the steam outlet. The present invention uses an integrated steam-bake heating tube to solve the problem of an excessive number of heating elements and steam generators, reducing costs and having a simple structure. By using two integrated steam-bake heating tubes connected in series, water accumulation will not occur, and therefore no additional equipment is required to treat sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of hot steam heating, and in particular to a multifunctional heating device and a cooking appliance. Background Art

[0002] Currently, steam ovens on the market typically use one or more sets of heating elements to bake food. The steam function requires a separate steam generator to generate steam and deliver it to the oven cavity. This is expensive, and the multiple heating elements and steam generators take up a lot of space, making the overall size of the steam oven relatively large.

[0003] At the same time, scale is easily accumulated in the steam generator, which affects its service life. In addition, steam generators generally store a certain amount of water. Some steam ovens have added a wastewater discharge system, which undoubtedly increases costs. Some steam ovens are even only designed with manual drainage or no wastewater treatment design at all, making it difficult for users to use. At the same time, the accumulated water keeps rolling in the steam generator, affecting the water quality.

[0004] In summary, the existing steam oven has the following defects:

[0005] 1. The number of heating elements and steam generators is large, resulting in high costs; they take up a lot of space and the size of the whole machine is relatively large;

[0006] 2. Currently, the steam ovens or microwave ovens on the market mainly use superheated steam technology, which requires an additional steam heating system, which is costly and technically difficult to implement;

[0007] 3. The steam generator is prone to scale, causing blockage and shortening its service life;

[0008] 4. If water accumulates in the steam generator, additional mechanisms must be added to drain it or it must remain there and be continuously swirled. Summary of the Invention

[0009] To overcome at least one of the aforementioned drawbacks of the prior art, the present invention provides a multifunctional heating device and cooking appliance. This invention utilizes a steam-bake heating element, which eliminates the need for an excessive number of heating elements and steam generators, reduces costs, and offers a simple structure. By connecting two steam-bake heating elements in series, water accumulation is eliminated, eliminating the need for additional wastewater treatment equipment.

[0010] The technical solution adopted by the present invention to solve the problem is:

[0011] A multifunctional heating device comprises: a first steam-bake heating tube, which is hollow inside; a second steam-bake heating tube, which is hollow inside and connected to the first steam-bake heating tube via a conduit; a water supply tank, which is used to provide a water source for the first steam-bake heating tube; a water pump, which is connected to the water supply tank via a water inlet pipe and is connected to the first steam-bake heating tube via a water supply pipe; and a steam outlet, which is connected to the second steam-bake heating tube via an air outlet pipe, so as to eject hot steam through the steam outlet.

[0012] By adopting the above solution, the first and second steam-bake heating tubes can respectively achieve the effects of dry baking and high-temperature / superheated steam heating. This eliminates the need for stacking heating tubes and steam generators, significantly reducing the overall material cost and size of the device.

[0013] Furthermore, the first integrated steam-bake heating tube and the second integrated steam-bake heating tube have the same specifications and shapes.

[0014] By adopting the above solution, the steam-bake integrated heating tube can easily achieve low-temperature steam and high-temperature / superheated steam by electronically controlling the water pump flow and sensing the steam temperature in the cavity.

[0015] Furthermore, the first integrated steam-bake heating tube and the second integrated steam-bake heating tube both include: an inner heating tube; an outer heating tube, the outer heating tube being sleeved on the outside of the inner heating tube; a heating wire, the heating wire being located in the interlayer between the inner heating tube and the outer heating tube branch; a fixing head, the fixing head being sleeved on both sides of the inner heating tube and abutting against the end of the outer heating tube; and a terminal, the terminal being used to connect the heating wire to a power source.

[0016] By adopting the above solution and taking modular design, the design difficulty of the product is reduced, and the assembly process is simplified, which is conducive to production.

[0017] Furthermore, it also includes a heat insulation plate and a heating plate, the edges of the heat insulation plate and the heating plate are buckled and sealed to form a accommodating cavity inside, and the first steam-bake integrated heating tube and the second steam-bake integrated heating tube are located inside the accommodating cavity.

[0018] By adopting the above solution, single-sided heating and single-sided heat insulation effects can be achieved.

[0019] Furthermore, a blowing device is provided on the heating plate between the first steam-bake integrated heating tube and the second steam-bake integrated heating tube, and a plurality of vents are provided on the heating plate for discharging heat from the first steam-bake integrated heating tube and the second steam-bake integrated heating tube from the vents through the blowing device.

[0020] By adopting the above solution, an air baking function similar to that of an air fryer can be achieved.

[0021] Furthermore, the blowing device includes a motor and fan blades, and the motor is assembled on the heating plate.

[0022] By adopting the above solution, the air outlet effect is stable.

[0023] Furthermore, the thermal insulation board includes a first thermal insulation layer and a second thermal insulation layer, and the first thermal insulation layer and the second thermal insulation layer are sealed to form a vacuum layer between the first thermal insulation layer and the second thermal insulation layer.

[0024] By adopting the above solution, it is avoided that the high temperature inside the heat insulation layer causes burns to the user on the outer layer.

[0025] A cooking appliance comprises a main cooking shell, a cover, a cavity assembly and a multifunctional heating device. The main cooking shell is connected to the cover, the cavity assembly and the multifunctional heating device are located in the main cooking shell, and an exhaust port is provided on the main cooking shell.

[0026] By adopting the above solution, a cooking appliance with a simple structure and the effects of dry baking and high-temperature / superheated steam heating is realized.

[0027] Furthermore, one side surface of the main cooking shell protrudes outward to form a protruding shell, and the heat insulation plate and the heating plate in the multifunctional heating device are installed between the protruding shell and the cavity assembly.

[0028] By adopting the above solution, it is convenient to install the multifunctional heating device.

[0029] Furthermore, a stand is provided at the bottom of the main cooking shell, and the water supply tank is located between the stands.

[0030] By adopting the above solution, the cooking appliance is fixed and stable, and the main cooking shell is supported, thereby improving the heat dissipation effect.

[0031] In summary, the multifunctional heating device and cooking appliance provided by the present invention have the following technical effects:

[0032] 1. By installing a first steam-bake heating tube and a second steam-bake heating tube, the effects of dry baking and high-temperature / superheated steam heating can be achieved respectively, eliminating the need for stacking heating tubes and steam generators, greatly reducing the material cost and size of the entire machine.

[0033] 2. The modular design allows the product to be assembled and used simply by designing the corresponding installation structure, which reduces the design difficulty of the product and simplifies the assembly process, facilitating production;

[0034] 3. Scale does not adhere to or accumulate inside the first and second steam-bake heating tubes, thereby extending the service life of the steam-bake heating tubes and the entire appliance.

[0035] 4. No waste water remains in the first steam-bake heating tube and the second steam-bake heating tube, eliminating the need for a waste treatment mechanism, greatly saving costs and space. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of a multifunctional heating device according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of a steam-bake integrated heating tube according to an embodiment of the present invention;

[0038] Figure 3 This is a structural diagram of a blowing device according to an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a cooking device according to an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the installation structure of the multifunctional heating device according to an embodiment of the present invention;

[0041] Figure 6 is a schematic side sectional structural diagram of a cooking device according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic structural diagram of a cooking device cavity assembly according to an embodiment of the present invention;

[0043] Figure 8 Schematic diagram of the electrical control structure of a cooking device according to an embodiment of the present invention.

[0044] 1. The first and second heating elements of the present invention are as follows: 1. First integrated steam-bake heating tube; 110. Fixed head; 120. External heating tube; 130. Internal heating tube; 140. Heating wire; 2. Second integrated steam-bake heating tube; 3. Water supply tank; 4. Water inlet pipe; 5. Water pump; 6. Water pipe; 7. Conduit; 8. Exhaust pipe; 9. Steam outlet; 10. Heat insulation board; 101. First insulation layer; 102. Second insulation layer; 103. Vacuum layer; 11. Heat supply board; 111. Air vent; 12. Accommodating cavity; 13. Blowing device; 131. Motor; 132. Fan blade; 14. Main cooking shell; 141. Exhaust port; 15. Cover; 151. Handle; 16. Cavity assembly; 161. Hot air baking area; 162. Heat insulation area; 1621. Rib structure; 17. Protruding shell; 18. Tripod; 19. Electronic control part. DETAILED DESCRIPTION

[0045] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] To facilitate understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0049] Example 1 of the present invention is shown in FIG. Figure 1 、 Figure 2 、 Figure 3 and Figure 5As shown, a multifunctional heating device is disclosed: it includes a first steam-bake integrated heating tube 1, a second steam-bake integrated heating tube 2, a water supply tank 3, a water pump 5 and a steam outlet 9, the water supply tank 3 is a water storage container, the water supply tank 3 and the water pump 5 are connected by a water inlet pipe 4, and the water pump 5 and the first steam-bake integrated heating tube 1 are connected by a water supply pipe 6, so that the water in the water supply tank 3 is provided to the first steam-bake integrated heating tube 1 through the water pump 5, the first steam-bake integrated heating tube is connected to the second steam-bake integrated heating tube 2 by a conduit 7, so as to continue to heat and evaporate the water that has not been completely converted in the first steam-bake integrated heating tube 1 into hot steam, the second steam-bake integrated heating tube 2 is connected to the steam outlet 9 through the exhaust pipe 8, and the water passing through the first steam-bake integrated heating tube 1 and the second steam-bake integrated heating tube 2 is completely converted into steam and discharged from the steam outlet 9; the first steam-bake integrated heating tube 1 and the second steam-bake integrated heating tube 2 can respectively achieve the effects of dry baking and high-temperature / superheated steam heating. There is no need to stack heating tubes and steam generators, which greatly reduces the material cost of the whole machine and reduces the size of the whole machine. The overall modular design reduces the design difficulty of the product and simplifies the assembly process, which is conducive to production.

[0050] Specifically, the first integrated steam-bake heating tube 1 is hollow inside, and the second integrated steam-bake heating tube 2 is hollow inside, and the specifications and shapes of the two are the same. The first integrated steam-bake heating tube 1 and the second integrated steam-bake heating tube 2 both include an inner heating tube 130, an outer heating tube 120, a heating wire 140, a fixing head 110 and a terminal. The outer heating tube 120 is sleeved on the outside of the inner heating tube 130, and the length of the outer heating tube 120 is shorter than the length of the inner heating tube 130. The heating wire 140 is located in the interlayer between the inner heating tube 130 and the outer heating tube 120, and is spirally wrapped around the outside of the inner heating tube 130. The fixing head 110 is sleeved on both sides of the inner heating tube 130 and abuts against the end of the outer heating tube 120. The terminals are used to shield the two ends of the interlayer between the inner heating tube 130 and the outer heating tube 120, and to fix the outer heating tube 120 to the inner heating tube 130; the two ends of the inner heating tube 130 can be directly used to connect pipes to achieve the transfer of water or gas. The terminals are located on the fixed head 110 and are used to connect the heating wire 140 to the power supply to achieve the power supply effect of the heating wire 140. Of course, the terminals can be omitted, and the position is not unique. Its position can be changed. It can be used to provide the power connection effect, or a wire can be directly used instead of the terminal to achieve the power supply effect. The first steam-bake integrated heating tube 1 and the second steam-bake integrated heating tube 2 can easily achieve low-temperature steam and high-temperature / superheated steam by electrically controlling the flow rate of the water pump 5 and sensing the steam temperature in the cavity.

[0051] Furthermore, the multifunctional heating device further comprises a heat insulation plate 10 and a heat supply plate 11, wherein the heat insulation plate 10 and the heat supply plate 11 both have a recessed structure in the center and the recessed structures of the two are opposite to each other, and the heat insulation plate 10 and the heat supply plate 11 are buckled together so that the edges of the recessed structures of the two are tightly connected, thereby forming a hollow accommodating cavity 12 between the heat insulation plate 10 and the heat supply plate 11, and the first steam-bake integrated heating tube 1 and the second steam-bake integrated heating tube 2 are located inside the accommodating cavity 12, and the heat insulation plate 10 comprises a first heat insulation layer 101 and a second heat insulation layer 102, and the first heat insulation layer 101 and the heat supply plate 11 are respectively The second insulation layer 102 is sealed and connected to form a vacuum layer 103 between the first insulation layer 101 and the second insulation layer 102, so as to prevent the outer layer from causing burns to the user due to the high temperature inside the insulation layer; a blowing device 13 is provided on the heating plate 11 between the first steam-bake heating tube 1 and the second steam-bake heating tube 2, and a plurality of ventilation holes 111 are provided on the heating plate 11, so as to discharge the heat of the first steam-bake heating tube 1 and the second steam-bake heating tube 2 from the ventilation holes 111 through the blowing device 13, thereby achieving single-sided heating and single-sided insulation effects.

[0052] Furthermore, the blowing device 13 includes a motor 131 and fan blades 132. The motor 131 is assembled on the heating plate 11. When the motor 131 is working, it can drive the fan blades 132 to rotate, so that the heat of the first steam-bake heating tube 1 and the second steam-bake heating tube 2 is discharged from the vent 111, and the air outlet effect is stable, which can achieve a heating effect similar to that of an air fryer.

[0053] Reference Figure 4-8 As shown, the present invention also relates to a cooking appliance, comprising a main cooking shell 14, a cover 15, a cavity assembly 16 and a multi-functional heating device, wherein a stand 18 is provided at the bottom of the main cooking shell 14 for lifting and fixing the main cooking shell 14, the main cooking shell 14 and the cover 15 are hinged, the cover 15 is located on a side adjacent to the bottom surface of the main cooking shell 14, and the side is called the front of the main cooking shell 14, a handle 151 is provided on the side of the cover 15 away from the stand 18, and a hinge is provided on the side of the cover 15 close to the stand 18, and the cover 15 can be rotated open with the hinge as the axis by pulling the handle 151.

[0054] The cavity assembly 16 is tightly attached to the inner wall of the main cooking shell 14. After the cover 15 is opened, the structure of the cavity assembly 16 can be divided into two parts: a hot air baking area 161 arranged opposite to the cover 15 and four insulation areas 162 located between the cover 15 and the hot air baking area 161. The insulation areas 162 all adopt a vacuum interlayer method to isolate the internal temperature and avoid burns caused by the high temperature outside the main cooking shell 14. A multi-functional heating device is installed behind the hot air baking area 161, and the heating plate 11 of the multi-functional heating device serves as the hot air baking area 161. The rear side surface of the main cooking shell 14 protrudes outward to form a protruding shell 17, which is used to provide an accommodation space for the multi-functional heating device. The insulation areas 162 are all provided with strip-shaped convex rib structures 1621. The convex rib structures 1621 protrude toward the inside of the cavity assembly 16 and are arranged linearly, which is conducive to preserving the internal temperature. At least one side of the insulation area 162 is provided with a channel for installing the steam outlet 9, which is used to allow the hot steam of the multi-functional heating device to enter the cavity assembly 16, thereby realizing a cooking appliance with a simple structure and the effects of dry baking and high-temperature / superheated steam heating.

[0055] The multifunctional heating device in the main cooking shell 14 is also provided with an electrical control part 19, which is installed on the outer wall of the heat insulation plate 10 of the multifunctional heating device. The electrical control part 19 is used to provide electrical energy for the water pump 5, the blowing device 13, the first steam-bake heating tube 1 and the second steam-bake heating tube 2.

[0056] The water supply tank 3 of the multifunctional heating device is located between the legs 18, and is used to provide water for the first steam-bake heating tube 1 and the second steam-bake heating tube 2 of the multifunctional heating device. The top surface of the main cooking shell 14 is also provided with an exhaust port 141, which is used to keep the pressure inside and outside the cooking equipment itself within a normal range.

[0057] The operating principles and functions of the cooking appliance are as follows:

[0058] In one usage scenario, the cooking appliance has a steam mode. In this mode, after the first steam-bake heating tube 1 and the second steam-bake heating tube 2 are heated to a temperature that can turn water into steam, the water pump 5 controls the flow rate through the first steam-bake heating tube 1 and the second steam-bake heating tube 2, and then water is pumped from the water supply tank 3 through the water inlet pipe 4, and water is introduced into the first steam-bake heating tube 1 through the water supply pipe 6 and partially evaporated into steam, and then the steam in the first steam-bake heating tube 1 and the remaining water are transported to the second steam-bake heating tube 2 through the conduit 7, and all evaporated into 100°C steam, and finally transported to the cavity assembly 16 of the cooking appliance through the steam outlet 9 to cook the food in the cavity.

[0059] In one usage scenario, the cooking appliance has a high-temperature / superheated steam mode. In this mode, after the first and second steam-bake heating tubes 1 and 2 are heated to a temperature sufficient to convert water into steam, a water pump 5 controls the flow rate through the first and second steam-bake heating tubes 1 and 2. Water is then pumped from a water supply tank 3 via a water inlet pipe 4 and introduced into the first steam-bake heating tube 1 via a water delivery pipe 6, where it is completely evaporated into steam. The steam in the first steam-bake heating tube 1 is then transported via a conduit 7 to the second steam-bake heating tube 2 for further drying. Finally, the high-temperature / superheated steam is delivered to the cooking appliance's cavity assembly 16 through a steam outlet 9. The flow rate of the water pump 5 is controlled by an electronic control unit 19, which also senses and controls the steam temperature at the steam outlet 9, thereby steaming or superheating the food in the cavity assembly 16. The temperature in the cavity assembly 16 is generally controlled between 150°C and 200°C, and can even reach a superheated steam temperature of 350°C.

[0060] In one usage scenario, the cooking appliance has a dry-roasting mode. The entire machine is started, the first steam-bake heating tube 1 and the second steam-bake heating tube 2 are heated, and at the same time, power is supplied to the motor 131 to drive the fan blades 132 to rotate, blowing the hot air generated by the first steam-bake heating tube 1 and the second steam-bake heating tube 2 into the cooking cavity to cook the food.

[0061] Conventional cooking appliances require purified water for operation, but the use of impure water in the water supply tank 3 can lead to scale buildup. Therefore, the heating inner tube 130 employed in the present invention is made of quartz, a material similar in composition to scale, which prevents it from adhering to the tube walls and thus prevents scale from remaining within the tube. Furthermore, the first and second steam-bake heating tubes 1 and 2 do not suffer from residual wastewater. Under control of the electronic control unit 19, all water passing through these two tubes is evaporated or directly drained, eliminating the need for additional wastewater treatment mechanisms.

[0062] In summary, the multifunctional heating device and cooking appliance provided by the present invention have the following technical effects:

[0063] 1. By providing a first steam-bake heating tube 1 and a second steam-bake heating tube 2, the effects of dry baking and high-temperature / superheated steam heating can be achieved respectively, without the need for stacking heating tubes and steam generators, significantly reducing the material cost and size of the entire machine.

[0064] 2. The modular design allows the product to be assembled and used simply by designing the corresponding installation structure, which reduces the design difficulty of the product and simplifies the assembly process, facilitating production;

[0065] 3. Scale does not adhere to or accumulate inside the first and second steam-bake heating tubes 1 and 2, thereby extending the service life of the steam-bake heating tubes and the entire appliance.

[0066] 4. No waste water remains in the first steam-bake heating tube 1 and the second steam-bake heating tube 2, eliminating the need for a waste treatment mechanism, greatly saving cost and space.

[0067] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multifunctional heating device, characterized in that: include: a first steam-bake heating tube (1), wherein the first steam-bake heating tube (1) is hollow; a second steam-bake integrated heating tube (2), the second steam-bake integrated heating tube (2) being hollow inside and being in communication with the first steam-bake integrated heating tube (1) via a conduit (7); A water supply box (3), the water supply box (3) is used to provide a water source for the first steam-bake heating tube (1); A water pump (5), the water pump (5) being connected to the water supply tank (3) via a water inlet pipe (4), and being connected to the first steam-bake integrated heating pipe (1) via a water delivery pipe (6); A steam outlet (9) is connected to the second steam-bake integrated heating pipe (2) through an air outlet pipe (8) so as to eject hot steam through the steam outlet (9).

2. A multifunctional heating device according to claim 1, characterized in that: The first integrated steam-bake heating tube (1) and the second integrated steam-bake heating tube (2) have the same specifications and shapes.

3. A multifunctional heating device according to claim 2, characterized in that: The first integrated steam-bake heating tube (1) and the second integrated steam-bake heating tube (2) both comprise: a heating inner tube (130); A heating outer tube (120), wherein the heating outer tube (120) is sleeved on the outside of the heating inner tube (130); A heating wire (140), the heating wire (140) being located in the interlayer between the heating inner tube (130) and the heating outer tube (120); A fixed head (110), the fixed head (110) being sleeved on both sides of the heating inner tube (130) and abutting against the end of the heating outer tube (120); A terminal is provided, wherein the terminal is used to connect the heating wire (140) to a power source.

4. The multifunctional heating device according to claim 1, characterized in that: The heat insulating plate (10) and the heat supply plate (11) are also included. The edges of the heat insulating plate (10) and the heat supply plate (11) are snap-fitted and sealed to form a receiving cavity (12) inside. The first steam-bake integrated heating tube (1) and the second steam-bake integrated heating tube (2) are located inside the receiving cavity (12).

5. The multifunctional heating device according to claim 4, characterized in that: A blowing device (13) is provided on the heating plate (11) between the first steam-bake integrated heating tube (1) and the second steam-bake integrated heating tube (2), and a plurality of vents (111) are provided on the heating plate (11) for discharging heat from the first steam-bake integrated heating tube (1) and the second steam-bake integrated heating tube (2) through the vents (111) via the blowing device (13).

6. The multifunctional heating device according to claim 5, characterized in that: The blowing device (13) comprises a motor (131) and a fan blade (132), and the motor (131) is assembled on the heating plate (11).

7. The multifunctional heating device according to claim 4, characterized in that: The thermal insulation board (10) comprises a first thermal insulation layer (101) and a second thermal insulation layer (102), wherein the first thermal insulation layer (101) and the second thermal insulation layer (102) are sealed to form a vacuum layer (103) between the first thermal insulation layer (101) and the second thermal insulation layer (102).

8. A cooking appliance, characterized in that: The invention comprises a main cooking shell (14), a cover (15), a cavity assembly (16) and a multifunctional heating device according to any one of claims 1 to 7, wherein the main cooking shell (14) is connected to the cover (15), the cavity assembly (16) and the multifunctional heating device are located in the main cooking shell (14), and an exhaust port (141) is provided on the main cooking shell (14).

9. The cooking appliance according to claim 8, characterized in that: One side surface of the main cooking shell (14) protrudes outward to form a protruding shell (17), and the heat insulation plate (10) and the heat supply plate (11) in the multifunctional heating device are installed between the protruding shell (17) and the cavity assembly (16).

10. The cooking appliance according to claim 9, characterized in that: The bottom of the main cooking housing (14) is provided with legs (18), and the water supply tank (3) is located between the legs (18).

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