Heating device and steaming and baking cooking machine

Abstract

The invention relates to a heating device and a steaming and baking cooking machine, the steaming and baking cooking machine comprises an inner container assembly and the heating device mounted on the inner container assembly, the heating device comprises a mounting seat, a heating pipe mounted on the mounting seat and a driving part which is in driving connection with the mounting seat to drive the heating pipe to rotate together, and the mounting seat and the heating pipe are rotatably arranged in an inner container body; the driving piece is installed outside the inner container body and covers the installation hole, and the heating pipe is provided with a positive electrode end, a negative electrode end and a rotating axis located between the positive electrode end and the negative electrode end, the soaking section radially penetrates through the rotating axis, and the first extension section and the second extension section extend to the positive electrode end and the negative electrode end from the two ends of the soaking section respectively. Under the driving action of the driving piece, the heating area formed by rotating the soaking section around the rotating axis can fill up a heating blind area between the positive electrode end and the negative electrode end of the heating pipe, and therefore the heating uniformity of the heating pipe is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steaming and baking cooking machines, in particular to a heating device and a steaming and baking cooking machine. Background Art

[0002] The heating tubes used in existing steam-bake cooking machines are mostly fixed, and when working, they heat food through heat radiation to achieve the baking effect. Most existing heating tubes are tubular structures, which form a heating surface by bending, and the heat density within this heating area is not uniform, which is specifically manifested in that the heating tube itself has a non-heating section at the electrode, that is, the cold end, and the heating section equipped with a resistance wire usually also exhibits uneven heating. Even if the heating tube is designed to be a U-shaped structure or a serpentine structure, it is difficult to avoid the problem of unevenness of the entire heating surface caused by the gaps between multiple heating sections, and it is difficult to ensure the heating consistency of the heating tube during mass production. In addition, in order to ensure that there is enough cooking space in the inner pot, the current fixed heating tubes are usually attached to the inner pot, which undoubtedly increases the difficulty of cleaning. Summary of the invention

[0003] Since the arrangement of the heating tube in the existing steam-bake cooking machine has the disadvantages of uneven heating and hindering the user from cleaning the inner pot, it is necessary to provide a heating device and a steam-bake cooking machine.

[0004] Heating device for a steam-bake cooking machine, comprising:

[0005] Mounting seat;

[0006] A heating tube, comprising a positive terminal and a negative terminal installed on the mounting seat and arranged at intervals, and a rotation axis located between the positive terminal and the negative terminal, comprising a heat-saturating section radially penetrating the rotation axis, and a first extension section and a second extension section extending from both ends of the heat-saturating section to the positive terminal and the negative terminal respectively; and

[0007] A driving member is drivingly connected to the mounting seat to drive the heating tube to rotate around the rotation axis.

[0008] With such arrangement, under the driving action of the driving member, the heating zone formed by the equalizing section rotating around the rotation axis can fill the heating blind zone between the positive end and the negative end of the heating tube, thereby improving the uniformity of heating of the heating tube.

[0009] In one embodiment, the first extension section includes a first radial extension portion extending radially from the positive end away from the rotation axis and a first arc extension portion extending circumferentially from the first radial extension portion;

[0010] The second extension section includes a second radial extension portion extending from the positive end in a radial direction away from the rotation axis and a second arc extension portion extending from the second radial extension portion in a circumferential direction.

[0011] With this arrangement, the food to be cooked can be heated four times in one rotation cycle, which prolongs the time for the heating tube to transfer heat to the food at a close distance, thereby maintaining the temperature of the food and improving the heating efficiency.

[0012] In one embodiment, the first arc extension portion and the second arc extension portion are respectively circular arcs centered on the rotation axis.

[0013] With such arrangement, the heating annular surface formed by the rotation of the first extension section or the second extension section and the heating circular surface formed by the rotation of the heat-averaging section fully overlap at the outer edge, thereby improving the heating effect.

[0014] In one embodiment, the heat equalization section includes a densified zone and normal zones located on both sides of the densified zone, the length of the densified zone is equal to the distance between the positive terminal and the negative terminal, and the heat release efficiency of the densified zone is twice that of the normal zone.

[0015] With such arrangement, the heat generated by the blank area between the first radial extension portion and the second radial extension portion is provided by the dense area of ​​the heat equalization section, thereby achieving consistent heat generation at different diameters on the rotating surface formed by the rotation of the heating tube and improving the overall heating effect of the heating device.

[0016] In one embodiment, the heat soaking section is arranged coplanar with the first extension section and the second extension section.

[0017] This arrangement reduces the height of the entire heating tube and optimizes the space inside the steam-bake cooking machine.

[0018] In one embodiment, the heating device further comprises an induction moving coil fixedly connected to the mounting seat and an induction fixed coil surrounding the induction moving coil and arranged at intervals on the outer peripheral wall of the mounting seat;

[0019] The positive terminal and the negative terminal are electrically connected to the positive pole and the negative pole of the induction moving coil respectively, and the induction fixed coil is used to connect to alternating current.

[0020] In this way, under the action of the alternating electromotive force, an induced current is generated in the induction moving coil, causing the heating tube to heat up. This non-contact way of transmitting electrical energy will not wear the electrodes, and the current in the induction moving coil is an induced current, which will not generate safety risks such as electric sparks caused by poor contact.

[0021] In one embodiment, the mounting base includes a cylinder and a plurality of heat dissipation blades surrounding the rotation axis and fixedly connected to the outer peripheral wall of the cylinder.

[0022] With such an arrangement, the heat dissipation blades rotate together with the mounting base to guide the airflow through the heating tube and take away the heat, so that the food in the inner pot can receive more heat.

[0023] In one embodiment, the mounting seat further comprises a sealing plate sealed on the cylinder, and the driving member comprises a transmission rod mounted on the sealing plate and a driving motor drivingly connected to the transmission rod.

[0024] Such an arrangement can prevent steam from escaping from the cylinder while ensuring the connection between the mounting seat and the driving member.

[0025] In one of the embodiments, the heating device further comprises a mounting sleeve, the induction stator coil is mounted on the mounting sleeve, and the mounting seat is rotatably and sealingly inserted in the mounting sleeve.

[0026] Such arrangement further prevents steam from overflowing between the mounting seat and the mounting sleeve. The mounting sleeve can also limit the shaking of the mounting seat, thereby improving the stability of the rotation of the mounting seat.

[0027] The present application also provides a steaming and baking cooking machine, comprising:

[0028] An inner liner body, wherein a mounting hole is formed on the top of the inner liner body; and

[0029] As in the heating device described above, the mounting seat and the heating tube of the heating device are rotatably disposed in the inner pot body, and the driving member of the heating device is mounted outside the inner pot body and covers the mounting hole.

[0030] With such a configuration, the heating device provided by the present application is adopted, and uniform heating is achieved by utilizing a driving member in conjunction with a special design of a heating tube; the inductive transmission of electrical energy extends the service life of the heating device; in addition, compared with traditional fixed heating tubes, the arrangement density of the heating tubes is reduced, making it easier for users to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of a steaming and baking cooking machine in one embodiment of the present invention;

[0032] Figure 2 for Figure 1 A cross-sectional view of the steam-bake cooking machine shown;

[0033] Figure 3 for Figure 2 A schematic diagram of the structure of the heating device;

[0034] Figure 4 for Figure 3 A front view of the heating device shown;

[0035] Figure 5 for Figure 3 A schematic bottom view of the heating device shown;

[0036] Figure 6 for Figure 5 The heating device shown is a cross-sectional view taken along the AA axis.

[0037] Reference numerals:

[0038] 10. Heating tube; 101. Positive terminal; 102. Negative terminal; 103. Rotation axis; 11. Heat equalization section; 111. Densification area; 112. Normal area; 12. First extension section; 121. First diameter extension portion; 122. First arc extension portion; 13. Second extension section; 131. Second diameter extension portion; 132. Second arc extension portion; 20. Mounting seat; 21. Cylinder; 22. Heat dissipation blades; 23. Sealing plate; 30. Driving member; 31. Transmission rod; 32. Driving motor; 33. Positioning plate; 34. Fastening bolts; 35. Fixing bracket; 40. Induction moving coil; 50. Induction fixed coil; 60. Mounting sleeve; 70. Inner tank body. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] The heating tubes used in existing steam-bake cooking machines are mostly fixed, and when working, they heat food through heat radiation to achieve the baking effect. Most existing heating tubes are tubular structures, which form a heating surface by bending, and the heat density within this heating area is not uniform, which is specifically manifested in that the heating tube itself has a non-heating section at the electrode, that is, the cold end, and the heating section equipped with a resistance wire usually also exhibits uneven heating. Even if the heating tube is designed to be a U-shaped structure or a serpentine structure, it is difficult to avoid the problem of unevenness of the entire heating surface caused by the gaps between multiple heating sections, and it is difficult to ensure the heating consistency of the heating tube during mass production. In addition, in order to ensure that there is enough cooking space in the inner pot, the current fixed heating tubes are usually attached to the inner pot, which undoubtedly increases the difficulty of cleaning.

[0046] Based on this, it is necessary to provide a heating device and a steam-bake cooking machine that heats evenly and is convenient for users to clean the inner pot.

[0047] See also Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of a steaming and baking cooking machine in one embodiment of the present invention. Figure 2 for Figure 1 The steam-bake cooking machine provided in the present application comprises an inner pot body 70 and a heating device, a mounting hole is provided on the top of the inner pot body 70, the heating device comprises a mounting seat 20, a heating tube 10 mounted on the mounting seat 20, and a driving member 30 connected to the mounting seat 20 to drive the heating tube 10 to rotate together, the mounting seat 20 and the heating tube 10 are rotatably arranged in the inner pot body 70, and the driving member 30 is installed outside the inner pot body 70 and covers the mounting hole.

[0048] See also Figures 3 to 6 , Figure 3 for Figure 2 The structural diagram of the heating device is shown in Figure 2. Figure 4 for Figure 3 A front view of the heating device shown, Figure 5 for Figure 3 The bottom schematic diagram of the heating device shown, Figure 6 for Figure 5The cross-sectional view of the heating device shown in the AA direction. In one embodiment provided in the present application, the heating tube 10 has a positive terminal 101 and a negative terminal 102 installed on the mounting seat 20 and arranged at intervals, and a rotation axis 103 located between the positive terminal 101 and the negative terminal 102, including a heat-averaging section 11 radially penetrating the rotation axis 103 and a first extension section 12 and a second extension section 13 extending from both ends of the heat-averaging section 11 to the positive terminal 101 and the negative terminal 102 respectively. Under the driving action of the driving member 30, the heating zone formed by the rotation of the heat-averaging section 11 around the rotation axis 103 can fill the heating blind zone between the positive terminal 101 and the negative terminal 102 of the heating tube 10, thereby improving the heating uniformity of the heating tube 10. Further, in order to improve the heating efficiency and heating effect of the heating tube 10, in this embodiment provided by the present application, the first extension section 12 includes a first radial extension portion 121 extending radially from the positive terminal 101 away from the rotation axis 103 and a first arc extension portion 122 extending circumferentially from the first radial extension portion 121, and the second extension section 13 includes a second radial extension portion 131 extending radially from the positive terminal 101 away from the rotation axis 103 and a second arc extension portion 132 extending circumferentially from the second radial extension portion 131. In one rotation cycle, the food to be cooked can be heated four times, which prolongs the time for the heating tube 10 to transfer heat to the food at a close distance, thereby maintaining the temperature of the food and improving the heating efficiency. It can be understood that in order to further improve the heating effect, the first extension section 12 and the second extension section 13 are centrally symmetrical to the rotation axis 103, and the first radial extension portion 121 and the second radial extension portion 131 are respectively perpendicular to the heat equalization section 11, so that the heating interval of the food to be cooked is stable and the temperature fluctuation is small. It can be understood that in order to further improve the heating effect, in other embodiments, the number of the first radial extension portion 121 and the second radial extension portion 131 is at least two and they are arranged obliquely to the soaking section 11, and the angle between the two adjacent first radial extension portions 121, the angle between the two adjacent second radial extension portions 131, the angle between the first radial extension portion 121 and the soaking section 11, and the angle between the second radial extension portion 131 and the soaking section 11 are all the same. In other words, the angle between the two adjacent heating sections in the heating tube 10 is the same. Optionally, the first arc extension portion 122 and the second arc extension portion 132 are respectively arcs centered on the rotation axis 103, so that the heating annular surface formed by the rotation of the first extension section 12 or the second extension section 13 and the heating circular surface formed by the rotation of the soaking section 11 fully overlap at the outer edge, thereby improving the heating effect.

[0049] Exemplarily, the heating tube 10 provided in the present application is arranged in an "8" shape: the positive terminal 101 and the negative terminal 102 of the heating tube 10 are arranged at intervals, the heating tube 10 extends radially from the positive terminal 101 away from the negative electrode to form a first radial extension portion 121, the heating tube 10 extends circumferentially by rotating 90° counterclockwise from the first radial extension portion 121 to form a first arc extension portion 122, the heating tube 10 radially passes through the positive terminal 101 and the negative terminal 102 from the first arc extension portion 122 to form a heat equalizing section 11, the heating tube 10 extends circumferentially by rotating 90° clockwise from the heat equalizing section 11 to form a second arc extension portion 132, the heating tube 10 extends radially from the second arc extension portion 132 to the negative electrode section to form a second radial extension portion 131. This "8"-shaped heating tube 10 has a simple structure, and since there is a large gap between the first radial extension portion 121, the second radial extension portion 131 and the heat equalizing section 11, it is also convenient for users to clean the inner tank. It is understandable that in other embodiments, the curvature of the first arc extension portion 122 and the second arc extension portion 132 in the above embodiments can be other angles, or can be formed by a combination of multiple arc segments, which can also increase the heat density of the heating surface formed by the rotation of the heating tube 10.

[0050] See also Figure 5 and Figure 6 Furthermore, in order to make up for the problem that the central area of ​​the entire heating tube 10 generates less heat due to the missing inner ring of the heating ring surface, in this embodiment provided by the present application, the heat-sparing section 11 includes a densified area 111 and a normal area 112 located on both sides of the densified area 111. The length of the densified area 111 is equal to the distance between the positive terminal 101 and the negative terminal 102, and the heat release efficiency of the densified area 111 is twice that of the normal area 112. In this way, the heat generated by the blank area between the first radial extension part 121 and the second radial extension part 131 is provided by the densified area 111 of the heat-sparing section 11, so that the heat generated at different diameters on the rotating surface formed by the rotation of the heating tube 10 is consistent, and the overall heating effect of the heating device is improved.

[0051] See also Figure 4 and Figure 5 Optionally, in an embodiment provided in the present application, the heat equalizing section 11, the first extension section 12 and the second extension section 13 are arranged on the same plane, thereby reducing the height of the entire heating tube 10 and optimizing the space inside the steam-bake cooking machine.

[0052] See also Figure 5, since the positive and negative electrodes of the heating tube 10 used for power supply rotate together with the mounting seat 20 in the present application, if the electrical connection is achieved by wires or electrodes, the electrodes are easily worn, shortening the service life of the heating device. In one embodiment provided in the present application, the heating device also includes an induction moving coil 40 and an induction fixed coil 50, the induction moving coil 40 is fixedly connected to the mounting seat 20, the induction fixed coil 50 surrounds the induction moving coil 40 and is arranged at intervals on the outer peripheral wall of the mounting seat 20, the positive terminal 101 and the negative terminal 102 are respectively electrically connected to the positive and negative electrodes of the induction moving coil 40, the induction fixed coil 50 is used to connect to alternating current, and under the action of the alternating electromotive force, an induced current is generated in the induction moving coil 40 to heat the heating tube 10. This non-contact way of transmitting electrical energy will not wear the electrodes, and the current in the induction moving coil 40 is an induced current, which will not generate safety risks caused by poor contact such as electric sparks. Specifically, the induction moving coil 40 is pre-buried in the mounting base 20, and the heating device is also provided with a mounting sleeve 60 for wrapping the induction fixed coil 50. The mounting base 20 can be rotatably inserted in the mounting sleeve 60, so as to ensure that the distance between the induction fixed coil 50 and the induction moving coil 40 remains unchanged, and also prevent the mounting base 20 from shaking, thereby maintaining the transmission efficiency of electric energy.

[0053] See also Figure 4 Optionally, in an embodiment provided in the present application, the mounting seat 20 includes a cylinder 21 and a plurality of heat dissipation blades 22, and the plurality of heat dissipation blades 22 surround the rotation axis 103 and are fixedly connected to the outer peripheral wall of the cylinder 21. In this way, the heat dissipation blades 22 rotate together with the mounting seat 20 to guide the airflow through the heating tube 10 and take away the heat, so that the food in the inner pot can receive more heat.

[0054] See also Figure 5 and Figure 6 , further, in order to prevent steam from overflowing from between the mounting seat 20 and the mounting sleeve 60, the mounting seat 20 is sealed and inserted into the mounting sleeve 60. In addition, the mounting seat 20 also includes a sealing plate 23 sealed on the cylinder 21, and the driving member 30 includes a transmission rod 31 installed on the sealing plate 23 and a driving motor 32 connected to the transmission rod 31. Specifically, a fastening bolt 34 is provided on the other side of the transmission rod 31, so that it is convenient to fix the transmission rod 31 to the mounting seat 20 and prevent steam from overflowing from the inner ring of the mounting seat 20. The driving member 30 also includes a fixing bracket 35 installed on the top of the inner tank body 70, and the driving motor 32 is installed on the fixing bracket 35. Optionally, the driving member 30 also includes a positioning plate 33 which is sleeved on the transmission rod 31 and covers one end of the cylinder 21. The positioning plate 33 not only increases the connection strength between the transmission rod 31 and the cylinder 21 to prevent the mounting seat 20 from shaking when the transmission rod 31 drives the mounting seat 20 to rotate, but also can further seal the cylinder 21 to prevent steam leakage.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heating device for a steaming and baking cooking machine, characterized in that: include: Mounting seat (20); A heating tube (10) having a positive terminal (101) and a negative terminal (102) installed on the mounting seat (20) and arranged at intervals, and a rotation axis (103) located between the positive terminal (101) and the negative terminal (102), comprising a heat-saturating section (11) radially penetrating the rotation axis (103), and a first extension section (12) and a second extension section (13) extending from both ends of the heat-saturating section (11) to the positive terminal (101) and the negative terminal (102), respectively; and A driving member (30) is drivingly connected to the mounting seat (20) to drive the heating tube (10) to rotate around the rotation axis (103).

2. The heating device according to claim 1, characterized in that The first extension section (12) comprises a first radial extension portion (121) extending radially from the positive end (101) away from the rotation axis (103) and a first arc extension portion (122) extending circumferentially from the first radial extension portion (121); The second extension section (13) comprises a second radial extension portion (131) extending radially from the positive end (101) away from the rotation axis (103) and a second arc extension portion (132) extending circumferentially from the second radial extension portion (131).

3. The heating device according to claim 2, characterized in that: The first arc extension portion (122) and the second arc extension portion (132) are respectively circular arcs centered on the rotation axis (103).

4. The heating device according to claim 3, characterized in that: The heat equalization section (11) comprises a densified zone (111) and normal zones (112) located on both sides of the densified zone (111), the length of the densified zone (111) is equal to the distance between the positive terminal (101) and the negative terminal (102), and the heat release efficiency of the densified zone (111) is twice the heat release efficiency of the normal zone (112).

5. The heating device according to claim 1, characterized in that: The heat equalization section (11) is arranged coplanarly with the first extension section (12) and the second extension section (13).

6. The heating device according to any one of claims 1 to 5, characterized in that: The heating device further comprises an induction moving coil (40) fixedly connected to the mounting seat (20) and an induction fixed coil (50) surrounding the induction moving coil (40) and arranged at intervals on the outer peripheral wall of the mounting seat (20); The positive terminal (101) and the negative terminal (102) are electrically connected to the positive pole and the negative pole of the induction moving coil (40) respectively, and the induction fixed coil (50) is used to connect to alternating current.

7. The heating device according to claim 6, characterized in that The mounting seat (20) comprises a cylinder (21) and a plurality of heat dissipation blades (22) surrounding the rotation axis (103) and fixedly connected to the outer peripheral wall of the cylinder (21).

8. The heating device according to claim 7, characterized in that: The mounting seat (20) further comprises a sealing plate (23) sealed on the cylinder (21), and the driving member (30) comprises a transmission rod (31) mounted on the sealing plate (23) and a driving motor (32) drivingly connected to the transmission rod (31).

9. The heating device according to claim 6, characterized in that: The heating device further comprises a mounting sleeve (60), the induction stator coil (50) is mounted on the mounting sleeve (60), and the mounting seat (20) is rotatably and sealingly inserted in the mounting sleeve (60).

10. A steaming and baking cooking machine, characterized in that: include: An inner liner body (70), wherein a mounting hole is provided on the top of the inner liner body (70); and According to any one of claims 1 to 9, the mounting seat (20) and the heating tube (10) of the heating device are rotatably disposed in the inner pot body (70), and the driving member (30) of the heating device is installed outside the inner pot body (70) and covers the mounting hole.

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