Frying and baking machine
By setting a heat transfer element in the reserved gap between the cold end of the heating tube and the mounting groove, the problems of uneven heat transfer and heat loss in the heating assembly are solved, achieving more efficient heat utilization and uniform heat transfer.
Patent Information
- Application Number
- CN202423020322.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In the existing technology, due to the large gap between the cold end of the heating tube and the heating plate for installation, heat transfer is lacking and heat loss occurs, resulting in poor heat transfer uniformity and low heating efficiency of the heating component to the baking plate.
The die-casting process is used to create a pre-reserved gap at the fit between the cold end of the heating tube and the mounting groove. The cold end of the heating tube is connected to the heating plate through a heat transfer component. The heat transfer component fills the heat transfer gap, improving the heat utilization rate. Heat loss is reduced by direct contact heat transfer or heat radiation between the heating tube and the baking plate.
It improves the heat utilization rate and heat transfer efficiency of the heating element, reduces the heat transfer difference between the cold and hot ends of the heating element, and enhances the heat transfer uniformity and heating efficiency of the heating element to the baking pan.
Smart Images
Figure CN223614664U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a grilling machine. Background Technology
[0002] Patent CN218943037U discloses a grill, including a housing, a heating element, and a grill pan. The heating element is disposed between the housing and the grill pan, and includes a heating plate and a heating tube, which are integrally formed. A mounting groove is provided on the side of the heating plate facing the grill pan, and the heating tube is disposed within the mounting groove so that at least a portion of the heating tube is in contact with the grill pan. By positioning the heating tube on the side of the heating plate facing the grill pan, the heat utilization rate of the heating tube is improved.
[0003] Existing technologies typically employ a casting process to integrate the heating plate and heating element. Specifically, the heating element is first placed in a mold, and then casting material for the heating plate is injected into the mold and allowed to solidify, thus forming the heating assembly. However, during the injection process, the casting material may splash, causing solidified material residue to remain on the heating surface of the heating element exposed in the mounting groove, forming protrusions. This not only hinders the flatness of the heating surface, leading to poor adhesion between the heating element and the baking plate and reduced heat transfer efficiency, but also causes uneven heat conduction at the protruding areas.
[0004] The applicant intends to address the aforementioned problems by replacing the casting process with die casting. Specifically, a heating plate with a mounting groove is first provided, and then a heating element is die-cast into the mounting groove to form a heating assembly. During further research, the applicant discovered that while die casting can prevent protrusions on the heating surface of the heating element, a gap is typically required between the mounting groove and the cold end of the heating element to ensure proper pressing. This gap results in a lack of heat transfer from the heating element to the end wall of the mounting groove after die casting with the heating plate. Furthermore, significant heat loss occurs at this location. Since the cold end of the heating element generates the least heat, the temperature at the corresponding cold end of the heating element on the baking tray is significantly lower than the temperature at the corresponding hot end, leading to poor heating uniformity and low heating efficiency. Utility Model Content
[0005] This invention provides a grilling machine that solves the problem in the prior art where the large gap between the cold end of the heating tube and the heating plate for installation causes heat transfer loss and heat dissipation, resulting in poor heat transfer uniformity and low heating efficiency from the heating component to the grilling plate.
[0006] The technical solution adopted by this utility model is as follows: This utility model provides a grill, including a shell, a heating component and a grill pan. The heating component is located between the shell and the grill pan. The heating component includes a heating plate and a heating tube. The heating plate has a mounting groove on the side facing the grill pan. The heating tube is die-cast in the mounting groove. The mounting groove has a through mounting hole. The cold end of the heating tube is bent through the mounting hole. A reserved gap and a heat transfer element are provided at the mating point between the cold end of the heating tube and the mounting hole. The heat transfer element is located in the reserved gap to connect the cold end of the heating tube to the heating plate.
[0007] The grill provided by this utility model features a pre-reserved gap at the junction of the cold end of the heating tube and the mounting hole. This gap ensures that the heating tube can be reliably die-cast into place and fit into the mounting groove, thus enabling the installation of the heating tube and the heating plate. Furthermore, the heat transfer element is located within this pre-reserved gap, connecting the cold end of the heating tube to the heating plate, specifically to the groove wall near the mounting hole. This allows the heat transfer element to transfer the heat from the cold end of the heating tube to the groove wall, filling the heat transfer gap and effectively utilizing the heat from the cold end of the heating tube. This improves the heat utilization rate and heat transfer efficiency of the heating tube. Simultaneously, it reduces the heat transfer difference between the cold and hot ends of the heating tube, thereby enhancing the uniformity of heat transfer from the heating tube to the heating plate and from the heating plate to the grill pan. In addition, by having the mounting slot located on the side of the heating plate facing the baking pan, and the heating tube die-cast into the mounting slot, compared to the mounting slot facing away from the baking pan, the heating tube can be closer to the baking pan. This allows for direct heat transfer between the heating tube and the baking pan, or direct heat radiation to the baking pan through heated air, reducing heat loss of the heating tube, making full use of the heat of the heating tube, and further improving heating efficiency.
[0008] In a preferred embodiment, the heat transfer element is U-shaped with an opening, and the cold end of the heating tube extends into the opening.
[0009] By setting the heat transfer element in a U-shape with an opening, and having the cold end of the heating tube extend into the opening, it is possible to facilitate the die-casting of the cold end of the heating tube into place. The opening also forms a buffer to avoid excessive squeezing pressure between the heating plate, heat transfer element, and heating tube during the die-casting process, which could cause deformation of the heating plate. This results in a smoother fit between the heating plate and the baking tray, and more uniform heat transfer.
[0010] More preferably, the heat transfer element includes a first connecting rib, a second connecting rib, and a third connecting rib connected in sequence. The second connecting rib is connected to the end wall of the mounting groove, and at least one of the first connecting rib and the third connecting rib is connected to the cold end of the heating tube to compensate for the heat transfer of the reserved gap, reduce heat loss, and make the baking pan heat evenly and with high heating efficiency.
[0011] More preferably, the heat transfer element includes a first connecting rib, a second connecting rib, and a third connecting rib connected in sequence, wherein the first connecting rib, the second connecting rib, and the third connecting rib are respectively connected to the cold end of the heating tube to wrap the cold end of the heating tube.
[0012] The first connecting rib, the second connecting rib, and the third connecting rib are respectively connected to the cold end of the heating tube to wrap the cold end of the heating tube. Therefore, the cold end of the heating tube can transfer heat to the mounting groove from multiple directions with the help of the first connecting rib, the second connecting rib, and the third connecting rib, so as to efficiently utilize the heat of the cold end of the heating tube and improve the heating efficiency and uniformity.
[0013] More preferably, a mating joint is provided between the cold end of the heating tube and the second connecting rib.
[0014] By setting a mating seam, there is room for movement between the cold end of the heating tube and the second connecting rib. This not only ensures that the heating tube is reliably pressed into place, but also prevents the heating plate from deforming due to excessive pressure, and makes the fit between the heating plate and the baking plate smoother and more uniform in heat transfer.
[0015] In a preferred embodiment, the heat transfer element is a heat transfer plate that conforms to the shape of the reserved gap.
[0016] The heat transfer component adopts a conformal heat transfer plate with the reserved gap, which can fully fill the reserved gap, thereby making full use of the heat transfer plate to achieve heat transfer, resulting in higher heat transfer efficiency and further reducing heat loss at the cold end of the heating tube, thus improving heat transfer efficiency and uniformity.
[0017] In a preferred embodiment, the heat transfer element is pressed against the upper surface of the cold end of the heating tube, the cold end of the heating tube is constricted, and the thickness of the heat transfer plate gradually decreases towards the heating tube to fit against the upper surface of the heating tube.
[0018] The heat transfer element is pressed against the upper surface of the cold end of the heating tube. This makes the heating tube more stably pressed into the mounting groove, and at the same time, it can transfer the heat from the upper surface and end face of the cold end to the end wall of the mounting groove. Heat transfer exists in multiple directions along the cold end, making full use of the heat at the cold end and improving heating efficiency. In addition, based on the structure of the heating tube itself, the cold end is constricted, and the thickness of the heat transfer plate gradually decreases towards the heating tube to fit against the upper surface of the heating tube. This makes the fit between the heat transfer plate and the heating tube tight, the heat transfer area large, and the heat transfer efficiency further improved.
[0019] In a preferred embodiment, the heat transfer element is integrally formed on the heating plate, and the heat transfer element has a first position extending obliquely from the groove wall of the mounting groove to above the groove opening of the mounting groove, and a second position after die casting flipped to horizontally fill the reserved gap.
[0020] The heat transfer component is integrally formed on the heating plate, ensuring a reliable connection between the heat transfer component and the heating plate. This prevents the heat transfer component from shifting during the die-casting process of the heating tube, ensuring precise positioning of the heat transfer component. The heat transfer component has a first position with its angled head above the groove and a second position horizontally filling the reserved gap. The heat transfer component and the heating tube are die-cast together in the heating groove. This simplifies the die-casting process while achieving a reliable connection between the heat transfer component, the heating tube, and the mounting groove, and facilitates the die-casting of the heat transfer component and the heating tube into place together.
[0021] More preferably, the heat transfer element is connected to the end wall of the mounting groove at a first position;
[0022] Alternatively, the heat transfer element is connected to the sidewall of the mounting groove at a first location.
[0023] Whether the heat transfer component is connected to the end wall or side wall of the mounting groove in the first position, it can be positioned within the groove during the die-casting process, preventing positional displacement and ensuring precise filling of the pre-reserved gap after pressing, thus reliably connecting the heating tube to the mounting groove. By connecting the heat transfer component to the end wall of the mounting groove, the component flips downwards towards the heating tube during die-casting, increasing the contact force between them. This effectively prevents deformation of the mounting groove or heating plate, promoting a smooth fit and uniform heat transfer between the heating plate and the baking tray after molding.
[0024] In a preferred embodiment, the heat transfer element is detachably mounted on the heating plate.
[0025] This allows the heating plate and heat transfer components to be molded and manufactured separately, and then assembled, simplifying the structure. The heating plate can be a universal heating plate, saving the trouble of creating a new mold.
[0026] In a preferred embodiment, the heating tube has a heating plane flush with the opening of the mounting groove, the heating plane is in contact with the baking pan, and the heat transfer element is in contact with the baking pan.
[0027] The heating element is manufactured using a die-casting process, and the heating element is controlled to form a heating plane flush with the opening of the mounting groove after die-casting. This allows the heating element to directly contact the baking pan for heating, which is more direct, more efficient, and results in less heat loss compared to non-contact heat transfer. The direct heat transfer between the heating element and the baking pan further improves the heat transfer efficiency of the cold end of the heating element, resulting in uniform heat transfer.
[0028] In a preferred embodiment, the cold end of the heating tube includes an end head located in the mounting groove and a wiring portion that is bent at the opposite end head and extends out of the mounting hole.
[0029] By opening mounting holes in the bottom wall of the mounting groove, the end of the heating tube is pressed into the mounting groove for positioning and heat transfer. The wiring part extends out from the mounting hole to connect the lead wire, thus achieving a reliable electrical connection. Attached Figure Description
[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0031] Figure 1 This is a schematic diagram of the grill machine in Embodiment 1 of this utility model;
[0032] Figure 2 This is a schematic diagram of the baking tray assembly in Embodiment 1 of this utility model;
[0033] Figure 3 for Figure 2 Enlarged diagram of section A in the middle;
[0034] Figure 4 This is a schematic diagram of the baking pan assembly in Embodiment 1 of this utility model with the heat transfer element in the first position;
[0035] Figure 5 This is a cross-sectional view of the baking pan assembly in the first position of the heat transfer component in Embodiment 1 of this utility model;
[0036] Figure 6 This is a schematic diagram of the heating tube in Embodiment 1 of this utility model;
[0037] Figure 7 This is a schematic diagram of the baking tray assembly in Embodiment 2 of this utility model.
[0038] List of components and reference numerals: 10 Housing; 11 Upper housing; 12 Lower housing; 20 Heating assembly; 21 Heating plate; 22 Heating tube; 23 Mounting groove; 231 Groove end wall; 232 Groove side wall; 24 Reserved gap; 30 Baking tray; 31 Upper baking tray; 32 Lower baking tray; 40 Heat transfer element; 41 First connecting rib; 42 Second connecting rib; 43 Third connecting rib; 44 Mating seam. Detailed Implementation
[0039] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.
[0040] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.
[0041] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0043] 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.
[0044] like Figure 1 As shown, in one embodiment, this utility model provides a grill, including a housing 10, a heating component 20, and a grill pan 30. The heating component 20 is located between the housing 10 and the grill pan 30. The heating component 20 includes a heating plate 21 and a heating tube 22. The heating plate 21 has a mounting groove 23 on the side facing the grill pan 30. The heating tube 22 is die-cast into the mounting groove 23. The mounting groove 23 has a through mounting hole. The cold end of the heating tube is bent and passes through the mounting hole. Figure 2 , 3 As shown in Figure 4, a reserved gap 24 and a heat transfer element 40 are provided at the mating point between the cold end of the heating tube 22 and the mounting hole. The heat transfer element 40 is located in the reserved gap 24 to connect the cold end of the heating tube 22 to the heating plate 21.
[0045] It should be noted that the aforementioned reserved gap 24 is a gap that exists to allow for the die-cast fitting and installation of the heating tube and the heating plate.
[0046] More preferably, the heat transfer element 40 connects the cold end of the heating tube 22 to the groove end wall 231 of the mounting groove 23. It should be noted that, in this invention, if... Figure 2 As shown, the mounting groove 23 has two groove sidewalls 232 and two groove endwalls 231. The two groove sidewalls 232 are arranged opposite each other along the length of the heating tube 22, and the two groove endwalls 231 connect the ends of the two groove sidewalls 232 respectively.
[0047] In addition, the grilling machine of this utility model can be a double-sided grilling machine, for example... Figure 1 As shown, the housing 10 includes a hinged upper housing 11 and a lower housing 12, and the baking tray 30 includes an upper baking tray 31 disposed in the upper housing 11 and a lower baking tray 32 disposed in the lower housing 12.
[0048] Of course, the grill can also be a single-sided grill, with the housing 10 including a base and a top cover hinged to the base, and the grill pan 30 set inside the base.
[0049] The grill provided by this utility model has a reserved gap 24 between the cold end of the heating tube 22 and the end wall 231 of the mounting groove 23, and a heat transfer element 40 located in the reserved gap 24. The reserved gap 24 ensures that the heating tube 22 can be reliably die-cast into place and fit into the mounting groove 23. On this basis, the heat transfer element 40 located in the reserved gap 24 connects the cold end of the heating tube 22 to the end wall 231 of the mounting groove 23. Thus, the heat transfer element 40 transfers the heat from the cold end of the heating tube 22 to the end wall 231 of the mounting groove 23, filling the heat transfer gap 24. The heat from the cold end of the heating tube 22 is effectively and fully utilized, thereby improving the heat utilization rate and heat transfer efficiency of the heating tube 22. At the same time, it reduces the heat transfer difference between the cold end and the hot end of the heating tube 22, thereby improving the heat transfer uniformity from the heating tube 22 to the heating plate 21 and the heat transfer uniformity from the heating plate 21 to the grilling plate 30. In addition, by positioning the mounting groove 23 on the side of the heating plate 21 facing the baking pan 30, the heating tube 22 is die-cast into the mounting groove 23. Compared to the mounting groove 23 being positioned with its back to the baking pan 30, this allows the heating tube 22 to be closer to the baking pan 30. This enables the heating tube 22 to directly contact the baking pan 30 for heat transfer or to directly radiate heat to the baking pan 30 through heated air, reducing heat loss of the heating tube 22, making full use of the heat from the heating tube 22, and further improving heating efficiency.
[0050] This utility model does not limit the specific structure of the heat transfer element 40, for example:
[0051] Implementation Example 1, such as Figure 1-6 As shown, the heat transfer element 40 is U-shaped with an opening, as referenced. Figure 3 The heat transfer element includes a first connecting rib 41, a second connecting rib 42, and a third connecting rib 43 connected in sequence. The cold end of the heating tube 22 extends into the opening. The second connecting rib 42 is connected to the end wall 231 of the mounting groove 23. At least one of the first connecting rib 41 and the third connecting rib 43 is connected to the cold end of the heating tube 22. In this embodiment, both the first connecting rib 41 and the third connecting rib 43 are connected to the cold end of the heating tube 22.
[0052] By arranging the heat transfer element 40 in a U-shape with an opening, and having the cold end of the heating tube 22 extend into the opening, it facilitates the die-casting of the cold end of the heating tube 22 and also creates a buffer to prevent excessive pressure between the heating plate 21, the heat transfer element 40, and the heating tube 22 during the die-casting process, which could cause deformation of the heating plate 21. This results in a smoother fit between the heating plate 21 and the baking pan 30, and more uniform heat transfer. The second connecting rib 42 is connected to the end wall 231 of the mounting groove 23, and at least one of the first connecting rib 41 and the third connecting rib 43 is connected to the cold end of the heating tube 22. This compensates for the heat transfer in the reserved gap 24, reduces heat loss, and ensures that the baking pan 30 is heated evenly and efficiently.
[0053] More preferably, such as Figure 3 As shown, a mating joint 44 is provided between the cold end of the heating tube 22 and the second connecting rib 42.
[0054] By setting the mating seam 44, there is a space for movement between the cold end of the heating tube 22 and the second connecting rib 42. This not only ensures that the heating tube 22 is reliably pressed into place, but also prevents the heating plate 21 from being deformed due to excessive pressure, and makes the fit between the heating plate 21 and the baking plate 30 smoother and more uniform in heat transfer.
[0055] Of course, in other specific implementations, the first connecting rib 41, the second connecting rib 42, and the third connecting rib 43 can optionally be connected to the cold end of the heating tube 22 to wrap the cold end of the heating tube 22. By connecting the first connecting rib 41, the second connecting rib 42, and the third connecting rib 43 to the cold end of the heating tube 22 to wrap the cold end of the heating tube 22, the cold end of the heating tube 22 can transfer heat to the mounting groove 23 from multiple directions with the help of the first connecting rib 41, the second connecting rib 42, and the third connecting rib 43, thus efficiently utilizing the heat at the cold end of the heating tube and improving heating efficiency and uniformity.
[0056] Implementation Example 2, such as Figure 7 As shown, the heat transfer element 40 is a heat transfer plate that conforms to the reserved gap 24.
[0057] More preferably, the heat transfer element 40 is pressed against the upper surface of the cold end of the heating tube 22, the cold end of the heating tube 22 is constricted, and the thickness of the heat transfer plate gradually decreases towards the heating tube 22 to fit the upper surface of the heating tube 22.
[0058] In this embodiment, the heat transfer element 40 adopts a conformal heat transfer plate that fills the reserved gap 24, thereby fully utilizing the heat transfer plate to achieve sufficient heat transfer and higher heat transfer efficiency. This further reduces heat loss at the cold end of the heating tube 22, improving heat transfer efficiency and uniformity. The heat transfer element 40 is pressed against the upper surface of the cold end of the heating tube 22, which on the one hand makes the heating tube 22 more stably pressed into the mounting groove 23, and on the other hand, it can transfer the heat from the upper surface of the cold end and the end face of the cold end to the groove end wall 231 of the mounting groove 23. Heat transfer exists in multiple directions along the cold end, making full use of the heat at the cold end and improving heating efficiency. In addition, based on the structure of the heating tube 22 itself, the cold end is constricted, and the thickness of the heat transfer plate gradually thins towards the heating tube 22 to fit against the upper surface of the heating tube 22, making the fit between the heat transfer plate and the heating tube 22 tight, with a large heat transfer area, further improving heat transfer efficiency.
[0059] This utility model does not limit the connection relationship between the heat transfer element 40 and the heating plate 21:
[0060] In a preferred embodiment, refer to Figure 4 ,5 As shown, the heat transfer element 40 is integrally formed on the heating plate 21, and the heat transfer element 40 has a first position extending obliquely from the groove wall of the mounting groove 23 to above the groove opening of the mounting groove 23 (e.g. Figure 4 , 5 (as shown) and after die casting, flipped to fill the second position in the reserved gap 24 horizontally (as shown) Figure 2 , 3 As shown in the figure, the tilt angle α of the heat transfer element 40 at the first position is less than 90°.
[0061] like Figure 3 As shown, the heat transfer element 40 is connected to the end wall 231 of the mounting groove 23 at the first position.
[0062] The specific die-casting process between the heat transfer component 40, the heating tube 22, and the heating plate 21 is as follows:
[0063] First, place the heating plate 21 with the mounting slot 23 facing upwards, and place the heating tube 22 in the opening of the mounting slot 23. At this time, the heat transfer element 40 is in the position as shown in the image. Figure 4 The first position shown;
[0064] Then, the heating tube 22 is pressed from top to bottom into the mounting groove 23 using a die-casting tool. At the same time, the die-casting tool presses the free end of the heat transfer element 40 so that it flips downward.
[0065] Next, as the heating tube 22 is pressed into place, the heat transfer element 40 also flips horizontally to the desired position. Figure 2 The second position shown is used to fill the reserved gap 24 and connect the groove end wall 231 of the mounting groove 23 to the cold end of the heating tube 22.
[0066] Referring to Embodiment 1, the cold end of the heating tube 22 is directly connected to the first connecting rib 41 and the third connecting rib 43, and the second connecting rib 4242 is connected to the end wall 231 of the mounting groove 23, so that the cold end of the heating tube 22 is connected to the end wall 231 of the mounting groove 23 through the heat transfer element 40. The above-mentioned connection method of the heat transfer element is also applicable to other embodiments of this utility model.
[0067] By integrally molding the heat transfer element 40 onto the heating plate 21, a reliable connection between the heat transfer element 40 and the heating plate 21 is ensured, thereby preventing the heat transfer element 40 from shifting during the die-casting process of the heating tube 22. This ensures the precise positioning of the heat transfer element 40. The heat transfer element 40 has a first position with its tilted head above the groove and a second position horizontally filling the reserved gap 24. The heat transfer element 40 and the heating tube 22 are die-cast together in the heating groove. This simplifies the die-casting process, achieves a reliable connection between the heat transfer element 40, the heating tube 22, and the mounting groove 23, and facilitates the die-casting of the heat transfer element 40 and the heating tube 22 together.
[0068] Of course, the heat transfer element 40 can also be connected to the side wall 232 of the mounting groove 23 in the first position. Alternatively, the heat transfer element 40 can be detachably mounted to the heating plate 21, for example, the heat transfer element 40 can be snapped onto the heating plate 21.
[0069] Whether the heat transfer element 40 is connected to the end wall 231 or the side wall 232 of the mounting groove 23 in the first position, it can achieve positioning during the die-casting process, preventing the heat transfer element 40 from shifting position. This ensures that after pressing, it can accurately fill the reserved gap 24 and reliably connect the heating tube 22 to the mounting groove 23. By connecting the heat transfer element 40 to the end wall 231 of the mounting groove 23, the heat transfer element 40 is flipped downwards towards the heating tube 22 during the die-casting process. The contact force between the two increases from small to large, effectively preventing deformation of the mounting groove 23 or the heating plate 21. This is beneficial for the flat fit and uniform heat transfer between the heating plate 21 and the baking tray 30 after molding.
[0070] The heat transfer component 40 can be detachably installed on the heating plate 21. It can be manufactured separately and then assembled with the heating plate 21, which simplifies the structure. The heating plate 21 can be a universal heating plate 21, saving the trouble of re-molding.
[0071] In a preferred embodiment, the heating tube 22 has a heating plane that is flush with the opening of the mounting groove 23, the heating plane is in contact with the baking pan 30, and the heat transfer element 40 is in contact with the baking pan 30.
[0072] By employing a die-casting process and controlling the heating tube 22 to form a heating plane flush with the opening of the mounting groove 23 after die-casting, the heating tube 22 directly contacts the baking pan 30 for heating. Compared with non-contact heat transfer, this is more direct, more efficient, and results in less heat loss. The direct heat transfer between the heating tube and the baking pan 30 further improves the heat transfer efficiency of the cold end of the heating tube 22, resulting in uniform heat transfer.
[0073] Of course, in practice, the heating tube 22 can be lower than the opening of the mounting slot 23 to transfer heat to the baking pan 30 by heating air.
[0074] In a preferred embodiment, mounting holes are formed in the bottom wall of the mounting groove 23, combined with... Figure 6 As shown, the cold end of the heating tube 22 includes an end head 221 located in the mounting groove 23 and a wiring portion 222 that is bent and extends out of the mounting hole from the opposite end head 221. The heating tube 22 also includes a hot end 223 connected between the two cold ends.
[0075] By opening a mounting hole in the bottom wall of the mounting groove 23, the end of the heating tube 22 is pressed into the mounting groove 23 for limiting and heat transfer. The wiring part extends out from the mounting hole to connect the lead wire, so as to achieve a reliable electrical connection with the control element inside the housing.
[0076] Additionally, it should be noted that since the heating tube has two cold ends located at both ends, the corresponding mounting groove 23 has two reserved gaps 24. Preferably, two heat transfer elements 40 are respectively provided in the two reserved gaps, and the structures of the two heat transfer elements 40 can be the same or different.
[0077] For any parts not mentioned in this utility model, existing technologies can be used or referenced.
[0078] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.
[0079] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A grilling machine, comprising a housing, a heating element, and a grilling pan, wherein the heating element is located between the housing and the grilling pan, characterized in that, The heating assembly includes a heating plate and a heating tube. The heating plate has a mounting groove on the side facing the baking pan. The heating tube is die-cast in the mounting groove. The mounting groove has a through mounting hole. The cold end of the heating tube is bent through the mounting hole. A reserved gap and a heat transfer element are provided at the mating point between the cold end of the heating tube and the mounting hole. The heat transfer element is located in the reserved gap to connect the cold end of the heating tube to the heating plate.
2. The grilling machine according to claim 1, characterized in that, The heat transfer element is U-shaped with an opening, and the cold end of the heating tube extends into the opening.
3. The grilling machine according to claim 2, characterized in that, The heat transfer element includes a first connecting rib, a second connecting rib, and a third connecting rib connected in sequence. The first connecting rib, the second connecting rib, and the third connecting rib are respectively connected to the cold end of the heating tube to wrap the cold end of the heating tube.
4. A grilling machine according to claim 2, characterized in that, The heat transfer element includes a first connecting rib, a second connecting rib, and a third connecting rib connected in sequence, and a mating joint is provided between the cold end of the heating tube and the second connecting rib.
5. A grilling machine according to claim 1, characterized in that, The heat transfer element is a heat transfer plate that conforms to the shape of the reserved gap.
6. A grilling machine according to claim 1, characterized in that, The heat transfer element is pressed against the upper surface of the cold end of the heating tube, the cold end of the heating tube is constricted, and the thickness of the heat transfer element gradually decreases towards the heating tube to fit the upper surface of the heating tube.
7. A grilling machine according to claim 1, characterized in that, The heat transfer element is integrally formed on the heating plate. The heat transfer element has a first position that extends obliquely from the groove wall of the mounting groove to above the groove opening of the mounting groove, and a second position that flips over after die casting to horizontally fill the reserved gap.
8. A grilling machine according to claim 7, characterized in that, The heat transfer element is connected to the end wall of the mounting groove at a first position; Alternatively, the heat transfer element is connected to the sidewall of the mounting groove at a first location.
9. A grilling machine according to claim 1, characterized in that, The heating tube has a heating plane that is flush with the opening of the mounting groove. The heating plane is in contact with the baking pan, and the heat transfer element is in contact with the baking pan.
10. A grilling machine according to claim 1, characterized in that, The cold end of the heating element includes an end head located in the mounting groove and a wiring portion that is bent at the opposite end head and extends out of the mounting hole.