Frying and baking machine

Abstract

The frying and baking machine comprises a shell, a baking tray and a heating piece arranged between the shell and the baking tray, the heating piece comprises a fixed tray and a heating pipe arranged on the fixed tray, a matching face and a fixing groove are arranged on the side, facing the baking tray, of the fixed tray, and an opening of the fixing groove faces the baking tray. The heating tube is embedded in the fixing groove through the opening, a radiation plane is formed on the top of the heating tube, the matching face abuts against the baking tray, and a gap is formed between the radiation plane and the baking tray, so that the heating tube is not in contact with the baking tray. The heating pipe is in non-contact with the baking tray, the situation that the temperature of the direct contact position of the heating pipe and the baking tray is high, obvious temperature difference is formed between the heating pipe and other areas of the baking tray, and the temperature consistency of the baking tray is affected can be avoided, heat is radiated to the baking tray through the heating pipe, heat is transferred to the baking tray through the fixed tray, and the temperature consistency of the baking tray can be improved. Therefore, the overall taste of the food materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of small household appliances, specifically to a grilling machine. Background Technology

[0002] In existing heating elements used in grills, the heating element is generally located on the side of the heating element facing away from the grill pan. The heat from the heating element needs to be transferred to the side of the heating element facing the grill pan before being transferred from the heating element to the grill pan. This results in a long heat conduction path and low heating efficiency. Moreover, the heating element is exposed on the lower surface of the heating element, which causes some heat loss. The heat from the heating element can easily reach the shell, causing the shell temperature to rise, increasing the probability of thermal deformation of the shell and hindering the extension of the shell's service life.

[0003] To address the aforementioned issues, patent CN202223602640.9 discloses a grilling machine that places the heating element on the side of the heating element facing the grill pan, thereby improving the heat transfer efficiency from the heating element to the grill pan and thus increasing the grill pan's cooking efficiency. However, in this patent, the heating element and the grill pan undergo contact heat transfer, resulting in uneven heating in the contact area and lower temperatures in other areas of the grill pan. This uneven heating leads to food burning in overheated areas and uneven browning in underheated areas, negatively impacting the overall taste of the food. Utility Model Content

[0004] This utility model provides a grilling machine, which aims to solve the technical problem of uneven heating of existing grill pans, which causes food in areas that are heated too much to burn and food in areas that are not heated enough to have poor color, thus affecting the overall taste of the food.

[0005] This utility model discloses a grill, including a shell, a baking tray, and a heating element disposed between the shell and the baking tray. The heating element includes a fixed plate and a heating tube disposed on the fixed plate. The fixed plate has a mating surface on the side facing the baking tray and a fixing groove with an opening on the mating surface facing the baking tray. The heating tube is embedded in the fixing groove through the opening. The top of the heating tube forms a radiating plane. The mating surface abuts against the baking tray. There is a gap between the radiating plane and the baking tray, so that the heating tube and the baking tray are in non-contact.

[0006] The grilling machine of this utility model also has the following additional technical features:

[0007] The gap is d, the width of the fixing groove is w, and the width of the radiation plane is s, where d ≥ 0.13w and 0.67w ≤ s < w.

[0008] The bottom of the heating element abuts against the bottom of the fixing groove.

[0009] The side of the heating tube is in abutment with the side wall of the fixing groove.

[0010] The fixing groove comprises two opposite vertical side walls and an arc-shaped wall connected between the two vertical side walls, and the lower end of the heating tube is in abutment with the arc-shaped wall.

[0011] The upper end of the heating tube is in abutment with the vertical side wall.

[0012] The heating tube is in interference fit with the fixing groove, and the fixing groove is provided with a limiting portion for limiting the heating tube, so as to prevent the heating tube from being pulled out of the fixing groove.

[0013] The heating tube is provided with two, which are respectively arranged at the middle and the edge of the fixing disc, and the two heating tubes are both extended along the circumference of the fixing disc.

[0014] The two ends of the two heating tubes are both arranged in the radial direction; and / or, the cold ends of the two heating tubes are arranged in dislocation.

[0015] The end of the fixing groove is provided with a wire passing port for the wire terminal of the heating tube to pass through.

[0016] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0017] 1. The roasting machine of the utility model, under the premise of arranging the heating tube towards the baking tray, forms non-contact between the heating tube and the baking tray, so as to avoid the higher temperature at the position where the heating tube directly contacts with the baking tray, to form obvious temperature difference with other areas of the baking tray and affect the consistency of the baking tray temperature, to realize the heating of the baking tray by radiating heat from the position of the heating tube to the baking tray, and by transmitting heat from the heating tube to the fixing disc and then from the fixing disc to the baking tray, so as to make the heating of the baking tray more uniform, and there is no obvious difference between high temperature and low temperature, so as to improve the consistency of the baking tray temperature, and it is beneficial to the uniform heating of the food materials, so as to improve the overall taste of the food materials.

[0018] By forming a radiation plane on the top of the heating tube, it is beneficial to control the size of the gap between the radiation plane and the baking tray, so as to radiate heat from the radiation plane to the baking tray at a suitable radiation distance, and to ensure that the surface temperature of the baking tray at this position is not too high, so as to improve the uniformity of the baking tray cooking surface temperature.

[0019] 2. In order to ensure that the baking tray is evenly heated, and to avoid the temperature of the baking tray being too high at the position corresponding to the heating tube, thereby forming a significant temperature difference with other areas of the baking tray and affecting the consistency of the temperature of the baking tray, the gap d, the width of the fixed groove w, and the width of the radiation plane s satisfy the conditions d≥0.13w and 0.67w≤s<w, and by controlling the relevant parameters, the heat directly radiated from the heating tube to the baking tray and the heat transferred from the fixed tray to the baking tray reach a relatively balanced state, so that the baking tray is evenly heated, and the uniformity of the heating of the food material is improved.

[0020] 3. In order to improve the heat transfer effect of the fixed tray on the baking tray, the bottom of the heating tube abuts against the bottom of the fixed groove, which facilitates the transfer of heat from the heating tube to the fixed tray, thereby improving the heat transfer efficiency of the fixed tray on the baking tray, and the heating tube is arranged at the deepest part of the fixed groove, which can enhance the fixing reliability and reduce the probability of the heating tube coming out of the fixed groove.

[0021] Further, the fixed groove comprises two opposite vertical side walls and an arc-shaped wall connected between the two vertical side walls, and the lower end of the heating tube is attached to the arc-shaped wall. The arc-shaped wall is shaped according to the lower end of the heating tube, which can optimize the attachment effect of the two, improve the heat transfer efficiency, and improve the installation effect of the heating tube.

[0022] Further, the upper end of the heating tube is attached to the vertical side wall, which can improve the heat transfer efficiency and achieve clamping and fixing of the heating tube. This can avoid the loss of part of the heat, the loosening of the heating tube, and the increase in noise caused by the shaking of the heating tube in the fixed groove.

[0023] 4. In order to improve the heat transfer effect of the fixed tray on the baking tray, the side of the heating tube abuts against the side wall of the fixed groove, which facilitates the transfer of heat from the heating tube to the fixed tray, thereby improving the heat transfer efficiency of the fixed tray on the baking tray, and can avoid the loss of part of the heat, the loosening of the heating tube, and the increase in noise caused by the shaking of the heating tube in the fixed groove.

[0024] 5. In order to improve the fixing effect of the heating tube, the heating tube is interference-fitted with the fixed groove, and the fixed groove is provided with a limiting portion for limiting the heating tube, so as to prevent the heating tube from coming out of the fixed groove. When the heating tube and the fixed groove are interference-fitted with assembly errors, the limiting portion further limits the heating tube, which provides installation protection and ensures that the heating tube is firmly installed in the fixed groove, thereby preventing the heating tube from shaking in the fixed groove and emitting abnormal noise.

[0025] 6. In order to ensure that the baking tray is heated evenly, avoid excessive or insufficient local heat, the heating pipe is provided with two, which are arranged in the middle and edge of the fixed disc respectively, and the two heating pipes extend along the circumference of the fixed disc, so that the heat transmitted by the two heating pipes can cover the middle and edge areas of the baking tray, so that the food is heated evenly everywhere, avoiding the situation that the food in some places is burnt or poorly colored, thereby ensuring the overall quality of the food.

[0026] In order to improve the uniformity of the heating pipe along the circumferential heating of the baking tray, the two ends of the two heating pipes are arranged in the radial direction, so that the heat transmitted by the heating pipe forms a closed loop in the circumferential direction, which can provide a larger heating range compared with the C-shaped heating pipe, and improve the uniformity of heating.

[0027] In order to prevent the cold end of the two heating pipes from being concentrated on one side and affecting the uniformity of the baking tray, the cold ends of the two heating pipes are arranged in a staggered manner, which can avoid the situation that the cold end is concentrated and causes local insufficient heating of the baking tray, thereby affecting the color and taste of the food in that place.

[0028] 7. In order to facilitate the wiring of the heating pipe, the end of the fixed groove is provided with a wire passing port for the wiring terminal of the heating pipe to pass through, the wiring terminal of the heating pipe can pass through the wire passing port to the outside of the fixed disc, which is beneficial to save the length of the wiring connected with the heating pipe, and the wiring can be pulled tight from the opposite side to fix the heating pipe in the fixed groove, thereby improving the stability of the heating pipe. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 Part of the structure of the frying and baking machine under an embodiment of the present application.

[0031] Figure 2 Part of the structure of the frying and baking machine under an embodiment of the present application. Figure 1 Part of the structure of the frying and baking machine under an embodiment of the present application.

[0032] Figure 3 Part of the structure of the frying and baking machine under an embodiment of the present application.

[0033] Figure 4 Part of the structure of the frying and baking machine under an embodiment of the present application.

[0034] Figure 5 Part of the structure of the frying and baking machine under an embodiment of the present application.

[0035] Figure 6Fig. 1 is a schematic view of a heating tube according to an embodiment of the present application.

[0036] Reference signs:

[0037] 10, housing; 11, baking tray; 12, heating element; 13, fixing disc; 131, matching surface; 132, fixing groove; 1321, vertical side wall; 1322, arc-shaped wall; 133, wire passing port; 14, heating tube; 141, radiation plane; 15, gap. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in an exemplary manner combined with the drawings of the specification.

[0039] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in an exemplary manner combined with the drawings of the specification.

[0040] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0041] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through a transitional structure, but are connected solely by a connecting structure to form a whole. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0044] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] like Figures 1 to 6 As shown, this application provides a grill, including a housing 10, a baking tray 11, and a heating element 12 disposed between the housing 10 and the baking tray 11. The heating element 12 includes a fixing plate 13 and a heating tube 14 disposed on the fixing plate 13. The fixing plate 13 has a mating surface 131 on the side facing the baking tray 11 and a fixing groove 132 with an opening on the mating surface 131 facing the baking tray 11. The heating tube 14 is embedded in the fixing groove 132 through the opening. A radiating plane 141 is formed on the top of the heating tube 14. The mating surface 131 abuts against the baking tray 11. There is a gap 15 between the radiating plane 141 and the baking tray 11, so that the heating tube 14 and the baking tray 11 are in non-contact.

[0046] The utility model discloses a roasting machine, under the premise of setting the heating tube 14 towards the baking tray 11, by making the heating tube 14 and the baking tray 11 form non - contact, can avoid the position temperature of the heating tube 14 and the baking tray 11 direct contact higher, and the baking tray 11 other area forms the obvious temperature difference and influences the consistency of the temperature of the baking tray 11, by the position of heating tube 14 to the baking tray 11 radiation heat, and utilize heating tube 14 to transfer the heat to the fixed disc 13 again by the fixed disc 13 to the baking tray 11 heat transfer to realize the heating of the baking tray 11, can make the baking tray 11 everywhere heat more evenly, there is no obvious high temperature and low temperature difference, thus can improve the consistency of the temperature of the baking tray 11, be favorable to the food material everywhere heat evenly, thus improve the overall taste of food material.

[0047] By forming the radiation plane 141 on the top of the heating tube 14, it is beneficial to control the size of the gap 15 between the radiation plane 141 and the baking tray 11, so that the radiation plane 141 radiates heat to the baking tray 11 at a suitable radiation distance, ensuring that the surface temperature of the baking tray 11 at this position is not too high, thereby improving the uniformity of the cooking surface temperature of the baking tray 11.

[0048] Specifically, the improved heating element 12 can be applied to both the upper baking tray assembly and the lower baking tray assembly. For the sake of convenience, the following description will take the lower baking tray assembly as an example to illustrate the cooperation between the heating element 12 and the lower baking tray. Figure 1 As shown in the figure, the heating element 12 heats the baking tray 11 in two ways: one is that the heat of the heating tube 14 is radiated to the baking tray 11 through the gap 15, and the other is that the contact surface 131 contacts and transfers heat to the baking tray 11. Since the heating tube 14 is not in contact with the baking tray 11, the highest temperature position on the surface of the baking tray 11 is not necessarily above the heating tube 14, that is, the influence of the heating tube 14 on the highest temperature is reduced. By reasonably controlling the heat transfer in the above two aspects, the overall temperature of the baking tray 11 can be consistent, and there is no obvious local high temperature and low temperature, which can ensure that the surface temperature of the baking tray 11 is uniform and improve the cooking effect of food materials. In order to ensure the heat transfer effect, the fixed disc 13 can be made of a material with high heat conductivity, such as aluminum, to further optimize the performance of the heating element 12.

[0049] The formation of the radiation plane 141 on the heating tube 14 is beneficial to forming a uniform gap 15 between the radiation plane 141 and the baking tray 11, thereby improving the uniformity of radiation. The radiation plane 141 can be formed during the stamping installation of the heating tube 14 or can be processed before the installation of the heating tube 14, which is not limited in the present application.

[0050] Based on the setting of the radiation plane 141, the height of the heating tube 14 is reduced, and the height of the heating tube 14 is less than the height of the fixed groove 132. For the lower baking tray assembly, Figure 2As shown, the radiation plane 141 is lower than the top end of the fixing groove 132, and a gap 15 is formed between the radiation plane 141 and the baking tray 11. Assuming that the original height (i.e. the diameter) of the heating tube 14 is H, and the actual height of the heating tube 14 after forming the radiation plane 141 is H1, preferably, H1 = 0.87H, at this time, the heat transfer by the above two modes can ensure that the heat of the baking tray 11 is uniform everywhere. When H1 = 0.5H, the heating tube 14 directly gives more heat to the baking tray 11, which is not conducive to the temperature consistency of the baking tray 11 at this position and other positions, and therefore H1 can be controlled to be greater than 0.5H.

[0051] As shown in Figure 2 , Figure 5 and Figure 6 , a gap 15 is formed between the radiation plane 141 and the baking tray 11, the height of the gap 15 is d, the groove width of the fixing groove 132 is w, and the width of the radiation plane 141 is s. Assuming that the groove width of the fixing groove 132 is the diameter of the heating tube 14, 0.67w≤s<w can be set, and the height of the fixing groove 132 is at least the diameter of the heating tube 14. By setting d≥0.13w, the heat directly radiated by the heating tube 14 to the baking tray 11 and the heat transferred to the baking tray 11 by the fixing disc 13 can reach a relatively balanced state, the baking tray 11 can be uniformly heated everywhere, and the uniformity of the heating of the food material can be improved.

[0052] As a preferred embodiment, the bottom of the heating tube 14 abuts against the bottom of the fixing groove 132, which is conducive to accelerating the heat transfer of the heating tube 14 to the fixing disc 13, thereby improving the heat transfer efficiency of the fixing disc 13 to the baking tray 11. Moreover, the heating tube 14 is arranged at the deepest part of the fixing groove 132, which can enhance the fixing firmness and reduce the probability of the heating tube 14 coming out of the fixing groove 132.

[0053] In one embodiment, as shown in Figure 5 , the fixing groove 132 includes two opposite vertical side walls 1321 and an arc-shaped wall 1322 connected between the two vertical side walls 1321, and the lower end of the heating tube 14 abuts against the arc-shaped wall 1322. By profiling the arc-shaped wall 1322 with the lower end of the heating tube 14, the abutting effect of the two can be optimized, the heat transfer efficiency can be improved, and the installation effect of the heating tube 14 can be improved.

[0054] Further, the upper end of the heating tube 14 abuts against the vertical side wall 1321, which can improve the heat transfer efficiency and achieve clamping and fixing of the heating tube 14. When there is a gap 15 between the side of the heating tube 14 and the fixing groove 132, a part of the heat is lost, the heating tube 14 is prone to loosen and affect its installation effect, and the heating tube 14 is prone to shake in the fixing groove 132 and make abnormal sound and increase noise.

[0055] As a preferred implementation, the side of the heating tube 14 abuts against the side wall of the fixing groove 132, which is conducive to accelerating the heat transfer from the heating tube 14 to the fixing disc 13, thereby improving the heat transfer efficiency of the fixing disc 13 to the baking tray 11, and avoiding the loss of part of the heat when there is a gap 15 between the side of the heating tube 14 and the fixing groove 132, the loosening of the heating tube 14 affecting the installation effect, and the shaking of the heating tube 14 in the fixing groove 132 causing abnormal noise and increasing the noise.

[0056] In a preferred implementation, as shown in Figure 2 or Figure 3 After the heating tube 14 is pressed into the fixing groove 132, the side and bottom of the heating tube 14 are in contact with the inner wall of the fixing groove 132, and there is no fitting gap, which is conducive to the full transfer of heat from the heating tube 14 to the fixing disc 13, thereby ensuring the heating effect of the fixing disc 13 on the baking tray 11.

[0057] The heating tube 14 and the fixing groove 132 are, for example, an interference fit. Due to the error in the structure processing process, it may not be possible to ensure that the heating tube 14 is tightly clamped in the fixing groove 132. As a preferred implementation, the fixing groove 132 is provided with a limiting portion for limiting the heating tube 14 to prevent the heating tube 14 from coming out of the fixing groove 132.

[0058] When the heating tube 14 and the fixing groove 132 are interference fit and there is an assembly error, the limiting portion further limits the installation to ensure that the heating tube 14 is securely installed in the fixing groove 132, and prevents the heating tube 14 from shaking in the fixing groove 132, which is prone to abnormal noise and increases the noise. The limiting portion is, for example, a tube clamp provided on the side wall of the fixing groove 132, which can prevent the heating tube 14 from moving outward and avoid contact between the heating tube 14 and the baking tray 11.

[0059] As a preferred implementation, two heating tubes 14 are provided, which are respectively arranged at the middle and edge of the fixing disc 13, and both of the two heating tubes 14 extend along the circumference of the fixing disc 13.

[0060] As shown in Figure 4 The fixing disc 13 is provided with two fixing grooves 132 for the installation of the two heating tubes 14, and the heat transferred by the two heating tubes 14 to the baking tray 11 can cover the middle and edge areas of the baking tray 11, so that the food materials are evenly heated, avoiding the situation that some food materials are burnt or poorly colored, thereby ensuring the overall quality of the food materials.

[0061] In one embodiment, the two ends of the two heating tubes 14 are arranged in the radial direction to overlap, so that the heat transferred by the heating tubes 14 forms a closed loop in the circumferential direction, which can provide a larger heating range and improve the uniformity of heating compared to the C-shaped heating tube 14. Correspondingly, the ends of the two fixing grooves 132 are also arranged to overlap. Preferably, the overlapping part of the heating tube 14 includes the part of the tube body used for heating, and not only the cold end, so as to ensure that the grill 11 is heated in the circumferential direction 360 degrees.

[0062] In one embodiment, the cold ends of the two heating tubes 14 are arranged to be staggered, which can avoid the problem that the cold ends are concentrated to cause insufficient heating of the grill 11 in a local area, thereby affecting the coloring and taste of the food in that area. Correspondingly, as shown in Figure 4 , the two fixing grooves 132 are also arranged to be staggered at the positions corresponding to the cold ends.

[0063] It should be noted that the shape and number of the heating tubes 14 are not limited to the above-mentioned manner, and the heating tubes 14 can be provided in one or more, as long as the premise is to provide uniform heating effect to the grill 11.

[0064] As a preferred embodiment, the end of the fixing groove 132 is provided with a wire passing port 133 for the wire terminal of the heating tube 14 to pass through.

[0065] As shown in Figure 4 , the wire terminal of the heating tube 14 can pass through the wire passing port 133 to the outside of the fixing disc 13, which is beneficial to save the length of the wire connected to the heating tube 14, and the wire is pulled tight from the opposite side to fix the heating tube 14 in the fixing groove 132, which can enhance the stability of the heating tube 14 and improve the stability of the heating element 12.

[0066] The technical scheme of the utility model is not limited to the above-mentioned embodiments, and it should be pointed out that the combination of the technical scheme of any one embodiment and the technical scheme of one or more other embodiments is within the protection scope of the utility model. Although the utility model has been described in detail above by general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model are within the scope of protection required by the utility model.

Claims

1.A grilling machine, comprising a housing, a grill plate, and a heating element arranged between the housing and the grill plate, the heating element comprising a fixing disc and a heating tube arranged on the fixing disc, characterized in that, a mating surface and a fixed groove with an opening facing the grill plate are arranged on the side of the fixing disc facing the grill plate, the heating tube is embedded in the fixed groove through the opening, the top of the heating tube is formed with a radiation plane, the mating surface abuts against the grill plate, and the radiation plane has a gap with the grill plate, so that the heating tube and the grill plate form a non-contact. 2.The grilling machine according to claim 1, characterized in that, the gap is d, the groove width of the fixed groove is w, and the width of the radiation plane is s, wherein d≥0.13w, 0.67w≤s<w. 3.The grilling machine according to claim 1, characterized in that, the bottom of the heating tube abuts against the bottom of the fixed groove. 4.The grilling machine according to claim 1, characterized in that, the side of the heating tube abuts against the side wall of the fixed groove. 5.The grilling machine according to claim 3, characterized in that, the fixed groove comprises two opposite vertical side walls and an arc-shaped wall connected between the two vertical side walls, and the lower end of the heating tube abuts against the arc-shaped wall. 6.The grilling machine according to claim 5, characterized in that, the upper end of the heating tube abuts against the vertical side wall. 7.The grilling machine according to claim 1, characterized in that, the heating tube and the fixed groove are in interference fit, and the fixed groove is provided with a limiting portion for limiting the heating tube to prevent the heating tube from coming out of the fixed groove. 8.The grilling machine according to claim 1, characterized in that, two heating tubes are arranged at the middle and the edge of the fixing disc respectively, and the two heating tubes extend along the circumference of the fixing disc. 9.The grilling machine according to claim 8, characterized in that, the two ends of the two heating tubes are arranged in the radial direction and overlap each other; and / or, the cold ends of the two heating tubes are arranged in a staggered manner. 10.The grilling machine according to claim 1, characterized in that, the end of the fixed groove is provided with a wire passing port for the wire terminal of the heating tube to pass through.

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