Microwave cooking appliances

Abstract

The present invention discloses a microwave cooking device, comprising: a housing; a cooking cavity, arranged in the housing, a mounting hole penetrating the cooking cavity in the thickness direction and a positioning hole penetrating the cooking cavity in the thickness direction are provided on the cooking cavity, the mounting hole is connected to the positioning hole; a fan is rotatably arranged in the cooking cavity; a motor, having a motor shaft, a retaining ring is provided on the motor shaft, the motor is installed in the housing and located outside the cooking cavity, the retaining ring is suitable for passing through the mounting hole and the motor shaft is suitable for moving between the mounting hole and the positioning hole; a pressing plate, installed on the cooking cavity, a limiting hole penetrating the pressing plate in the thickness direction is provided on the pressing plate, a mounting groove connecting the limiting hole and the edge of the pressing plate is provided on the pressing plate, the motor shaft is suitable for passing through the mounting groove and fitting in the limiting hole, the limiting hole and the central axis of the positioning hole coincide, and the diameters of the positioning hole and the limiting hole are smaller than the diameter of the retaining ring. The microwave cooking device according to the embodiment of the present invention has the advantages of convenient use and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of electrical appliance manufacturing, and in particular to a microwave cooking appliance. Background Art

[0002] In the microwave cooking apparatus in the related art, the motor shaft of the motor extends into the cooking cavity through the through hole of the cooking cavity to drive the fan in the cooking cavity to rotate, but a retaining ring for fixing the fan blades is provided on the motor shaft, and the outer diameter of the retaining ring is larger than the diameter of the motor shaft, so the through hole on the cooking cavity needs to be large enough to facilitate the retaining ring to pass through, resulting in a large gap between the through hole and the motor shaft after assembly, making it easy for microwaves to leak out of the cooking cavity from the gap between the through hole and the motor shaft, affecting the cooking effect and reliability of the cooking apparatus. For this reason, some microwave cooking apparatuses use a copper mesh to fill the gap between the through hole and the motor shaft, but the copper mesh has the disadvantages of a complex assembly process and high manufacturing cost. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a microwave cooking device, which has the advantages of being easy to use and highly reliable.

[0004] To achieve the above-mentioned object, a microwave cooking device is provided according to an embodiment of the present invention. The microwave cooking device comprises: a housing; a cooking cavity, the cooking cavity is arranged in the housing, the cooking cavity is provided with a mounting hole penetrating the cooking cavity in a thickness direction and a positioning hole penetrating the cooking cavity in a thickness direction, the mounting hole is connected to the positioning hole; a fan, the fan is rotatably arranged in the cooking cavity; a motor, the motor has a motor shaft, the motor shaft is provided with a retaining ring, the motor is installed in the housing and located outside the cooking cavity, the retaining ring is suitable for passing through the mounting hole, and the motor shaft is suitable for moving between the mounting hole and the positioning hole; a pressing plate, the pressing plate is installed on the cooking cavity, the pressing plate is provided with a limiting hole penetrating the pressing plate in a thickness direction, the pressing plate is provided with a mounting groove connecting the limiting hole and the edge of the pressing plate, the motor shaft is suitable for passing through the mounting groove and fitting in the limiting hole, the limiting hole and the central axis of the positioning hole coincide, and the diameters of the positioning hole and the limiting hole are smaller than the diameter of the retaining ring.

[0005] The microwave cooking device according to the embodiment of the present invention has the advantages of being easy to use and highly reliable.

[0006] In addition, the microwave cooking device according to the above embodiment of the present invention may also have the following additional technical features:

[0007] According to an embodiment of the present invention, an extending direction of the mounting groove from the limiting hole is opposite to a direction from the positioning hole to the mounting hole.

[0008] According to an embodiment of the present invention, the pressing plate is attached to the cooking cavity.

[0009] According to one embodiment of the present invention, a boss is formed on the pressure plate, the limiting hole is formed on the top wall of the boss, a ring is formed on the cooking utensil, the mounting hole and the positioning hole are arranged on the inner side of the ring, and the boss fits inside the ring.

[0010] According to an embodiment of the present invention, the pressing plate is installed inside the cooking cavity.

[0011] According to one embodiment of the present invention, the microwave cooking appliance further comprises a heat insulation plate, which is mounted outside the cooking cavity and is provided with a first through hole and a second through hole matched with the positioning hole and the mounting hole, and the first through hole is connected to the second through hole.

[0012] According to an embodiment of the present invention, the mounting hole and the positioning hole are connected via a connecting groove, and two edges of the connecting groove are tangent to the mounting hole and the positioning hole respectively.

[0013] According to an embodiment of the present invention, the diameter of the limiting hole is equal to the width of the mounting groove.

[0014] According to an embodiment of the present invention, the diameter of the positioning hole is equal to the diameter of the limiting hole.

[0015] According to an embodiment of the present invention, the motor is installed at the rear of the cooking cavity, the cooking cavity has a rear plate, and the mounting hole and the positioning hole are both formed on the rear plate.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 2 is a schematic diagram of a partial structure of a microwave cooking appliance according to an embodiment of the present invention.

[0019] Figure 2 1 is a schematic diagram of a partial structure of a microwave cooking appliance according to an embodiment of the present invention.

[0020] Figure 3 is a partial cross-sectional view of a microwave cooking device according to an embodiment of the present invention.

[0021] Figure 4 is a partial exploded view of a microwave cooking appliance according to an embodiment of the present invention.

[0022] Figure 5 1 is a schematic diagram of a partial structure of a microwave cooking appliance according to an embodiment of the present invention.

[0023] Figure 6 2 is a schematic diagram of a partial structure of a microwave cooking appliance according to an embodiment of the present invention.

[0024] Figure 7 2 is a schematic diagram of a partial structure of a microwave cooking appliance according to an embodiment of the present invention.

[0025] Figure 8 1 is a schematic diagram of a partial structure of a microwave cooking appliance according to an embodiment of the present invention.

[0026] Fig. 9 4 is a schematic diagram of a partial structure of a rear plate of a microwave cooking appliance according to an embodiment of the present invention.

[0027] Fig.10 Schematic diagram of the structure of a pressing plate of a microwave cooking appliance according to an embodiment of the present invention.

[0028] Figure numerals: microwave cooking utensil 1, cooking cavity 100, mounting hole 101, positioning hole 102, connecting groove 103, ring platform 110, back plate 120, fan 200, motor 300, motor shaft 310, retaining ring 320, pressure plate 400, limiting hole 401, mounting groove 402, boss 410, heat insulation plate 500, first through hole 501, second through hole 502. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] Hereinafter, a microwave cooking device 1 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0031] like Figure 1-Figure 10 As shown, the microwave cooking appliance 1 according to the embodiment of the present invention includes a housing, a cooking cavity 100 , a fan 200 , a motor 300 and a pressing plate 400 .

[0032] The cooking cavity 100 is arranged in the housing, and the cooking cavity 100 is provided with a mounting hole 101 penetrating the cooking cavity 100 in the thickness direction and a positioning hole 102 penetrating the cooking cavity 100 in the thickness direction, and the mounting hole 101 is connected to the positioning hole 102. The fan 200 is rotatably arranged in the cooking cavity 100. The motor 300 has a motor shaft 310, and a retaining ring 320 is arranged on the motor shaft 310. The motor 300 is installed in the housing and located outside the cooking cavity 100, and the retaining ring 320 is suitable for passing through the mounting hole 101 and the motor shaft 310 is suitable for moving between the mounting hole 101 and the positioning hole 102. The pressing plate 400 is installed on the cooking cavity 100, and is provided with a limiting hole 401 which passes through the pressing plate 400 along the thickness direction, and is provided with a mounting groove 402 which connects the limiting hole 401 and the edge of the pressing plate 400, and the motor shaft 310 is suitable for passing through the mounting groove 402 and fitting in the limiting hole 401, and the central axis of the limiting hole 401 coincides with the positioning hole 102, and the diameters of the positioning hole 102 and the limiting hole 401 are smaller than the diameter of the retaining ring 320.

[0033] The following describes an assembly process of the microwave cooking device 1 according to the embodiment of the present invention with reference to the accompanying drawings.

[0034] When assembling the microwave cooking device 1, first, the motor shaft 310 and the retaining ring 320 are inserted into the cooking cavity 100 through the mounting hole 101, and then the motor shaft 310 is moved from the mounting hole 101 to the positioning hole 102. Thereafter, the pressing plate 400 is assembled into the cooking cavity 100, and the motor shaft 310 is passed through the mounting groove 402 and engaged into the limiting hole 401 by moving the pressing plate 400. Then, the pressing plate 400 is fixed to limit the motor shaft 310 using the limiting hole 401 and the positioning hole 102.

[0035] According to the microwave cooking device 1 of the embodiment of the present invention, a mounting hole 101 and a positioning hole 102 are provided on the cooking cavity 100, and the mounting hole 101 is connected to the positioning hole 102, so that the motor shaft 310 can move between the mounting hole 101 and the positioning hole 102. For example, the motor shaft 310 and the retaining ring 320 can first pass through the mounting hole 101 with a larger diameter and extend into the cooking cavity 100, and then the motor shaft 310 is moved from the mounting hole 101 to the positioning hole 102 with a smaller diameter, and finally the motor shaft 310 is fitted in the positioning hole 102 with a smaller diameter. This not only facilitates the smooth installation of the motor shaft 310 and the retaining ring 320, and facilitates improving the installation efficiency of the motor 300, but also can use the positioning hole 102 to position the motor shaft 310, improve the setting accuracy and stability of the motor shaft 310, reduce the fitting gap between the motor shaft 310 and the positioning hole 102 after installation, and reduce the microwave leakage in the fitting gap.

[0036] Furthermore, by setting the pressure plate 400, the limiting hole 401 of the pressure plate 400 coincides with the central axis of the positioning hole 102 of the cooking cavity 100. This not only makes it easier for the motor shaft 310 to fit into the positioning hole 102 and the limiting hole 401 with smaller diameters, but also facilitates further limiting the motor shaft 310 by using the pressure plate 400, so that the motor shaft 310 can be limited by the positioning hole 102 and the limiting hole 401 together. In addition, the pressure plate 400 can be used to compensate for the leakage of waves at the connection point between the mounting hole 101 and the positioning hole 102, and a hole with a smaller diameter is formed by the positioning hole 102 and the limiting hole 401, so that the hole can fit the motor shaft 310 as closely as possible, thereby reducing the gap between the motor shaft 310 and the hole. In this way, the motor shaft 310 can be reliably positioned, which is convenient for improving the setting accuracy and reliability of the motor shaft 310, and the mounting hole 101 can be shielded by the pressing plate 400. Compared with the microwave cooking utensils in the related art, the installation gap between the cooking cavity 100 and the pressing plate 400 and the motor shaft 310 can be reduced, thereby reducing the amount of microwave leakage from the installation gap to the outside of the cooking cavity 100, improving the anti-leakage performance of the cooking utensils 1, and improving the cooking effect of the microwave cooking utensils 1, reducing the time required for cooking ingredients, and improving cooking efficiency and reducing cooking costs. At the same time, it can also reduce the safety hazards caused by microwave leakage, improve the working reliability and stability of the cooking utensils 1, and improve the user experience.

[0037] In addition, compared with the method of setting a leak-proof copper mesh in the related art, since the assembly process of the copper mesh is complicated and the manufacturing cost of the copper mesh is high, the copper mesh can be omitted, which is not only convenient for simplifying the structure of the cooking utensil 1, reducing the number of parts of the cooking utensil 1, simplifying the manufacturing difficulty and installation process of the cooking utensil 1, improving the production efficiency of the cooking utensil 1, and reducing the manufacturing cost of the cooking utensil 1, but also can avoid the occurrence of a large amount of microwave leakage caused by the misalignment of the copper mesh installation, and further facilitates improving the cooking effect of the cooking utensil 1. At the same time, since the copper mesh has poor durability, the copper mesh is prone to rust in a high temperature and humid microwave environment. Omitting the copper mesh can avoid frequent replacement of the copper mesh, which is convenient for improving the structural reliability of the cooking utensil 1, reducing the maintenance cost of the cooking utensil 1, and improving the user's comfort.

[0038] Therefore, the microwave cooking device 1 according to the embodiment of the present invention has the advantages of being easy to use and having high reliability.

[0039] The following describes a microwave cooking device 1 according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0040] In some specific embodiments of the present invention, Figure 1-Figure 10 As shown, the microwave cooking appliance 1 according to the embodiment of the present invention includes a housing, a cooking cavity 100 , a fan 200 , a motor 300 and a pressing plate 400 .

[0041] Specifically, the extending direction of the mounting groove 402 from the limiting hole 401 is opposite to the direction from the positioning hole 102 to the mounting hole 101. In this way, the opening directions of the positioning hole 102 and the limiting hole 401 are opposite, and the force directions of the motor shaft 310 at the limiting hole 401 and the positioning hole 102 are opposite, which is convenient for improving the uniformity of the force of the motor shaft 310, making the structure of the cooking utensil 1 more stable, and facilitating improving the structural reliability of the cooking utensil 1.

[0042] Of course, those skilled in the art will appreciate that the extension direction of the mounting groove 402 from the limiting hole 401 and the direction from the positioning hole 102 to the mounting hole 101 may also be arranged at other angles.

[0043] Optionally, the pressing plate 400 is attached to the cooking cavity 100. This not only facilitates the arrangement of the pressing plate 400, facilitates the connection between the pressing plate 400 and the cooking cavity 100, and further facilitates accurate positioning of the motor shaft 310, but also prevents radial runout of the motor shaft 310, facilitates smooth operation of the motor shaft 310, and facilitates improving the working stability of the motor shaft 310.

[0044] Specifically, Figure 1-Figure 4 As shown, a boss 410 is formed on the pressing plate 400, a limiting hole 401 is formed on the top wall of the boss 410, a ring 110 is formed on the cooking utensil 1, a mounting hole 101 and a positioning hole 102 are arranged on the inner side of the ring 110, and the boss 410 is matched in the ring 110. This not only facilitates the positioning of the installation position of the pressing plate 400, but also facilitates the installation and setting of the pressing plate 400, and improves the installation efficiency of the cooking utensil 1, but also facilitates the matching of the pressing plate 400 with the cooking cavity 100, and facilitates the use of the pressing plate 400 to squeeze the cooking cavity 100, thereby facilitating the reliability and stability of the installation and positioning of the motor shaft 310 and the retaining ring 320. At the same time, the radial runout of the motor shaft 310 can be further avoided, and the working performance of the motor shaft 310 can be further improved.

[0045] Optionally, the pressing plate 400 is installed inside the cooking cavity 100. This can avoid interference between the pressing plate 400 and the motor 300, and further facilitate the installation of the pressing plate 400.

[0046] Further, the pressing plate 400 is installed on the inner side of the cooking cavity 100 by screw connection, welding, riveting, etc. In this way, the pressing plate 400 can be firmly installed to ensure that the pressing plate 400 is reliably fixed and connected to avoid the pressing plate 400 from loosening and falling off.

[0047] Specifically, Figure 4As shown, the microwave cooking device 1 further includes a heat insulating plate 500, which is mounted outside the cooking cavity 100 and is provided with a first through hole 501 and a second through hole 502 that match the positioning hole 102 and the mounting hole 101, and the first through hole 501 is connected to the second through hole 502. In this way, the heat insulating plate 500 can be used to block the temperature of the cooking cavity 100 after heating, so as to prevent the high temperature of the cooking cavity 100 from affecting the normal operation of the motor 300, thereby ensuring the efficiency and reliability of the operation of the motor 300. At the same time, the first through hole 501 and the second through hole 502 can facilitate the smooth passage of the motor shaft 310, so as to facilitate the assembly and molding of the cooking device 1.

[0048] Alternatively, if Fig. 9 As shown, the mounting hole 101 and the positioning hole 102 are connected by the connecting groove 103, and the two edges of the connecting groove 103 are tangent to the mounting hole 101 and the positioning hole 102. This not only facilitates the smooth movement of the motor shaft 310 between the mounting hole 101 and the positioning hole 102, and further facilitates the installation efficiency of the motor shaft 310, but also makes it possible to have no breakpoints between the mounting hole 101 and the positioning hole 102 and the connecting groove 103, so that they can have a smooth transition, and facilitate the processing and forming of the mounting hole 101, the positioning hole 102 and the connecting groove 103.

[0049] Specifically, the diameter of the limiting hole 401 is equal to the width of the installation slot 402. This ensures that the motor shaft 310 smoothly passes through the installation slot 402 and fits in the limiting hole 401, further facilitating the assembly and molding of the cooking utensil 1.

[0050] Of course, the diameter of the limiting hole 401 may also be smaller than the width of the mounting groove 402 .

[0051] Optionally, the diameter of the positioning hole 102 is equal to the diameter of the limiting hole 401. This not only facilitates the motor shaft 310 to pass through the positioning hole 102 and the limiting hole 401 for installation, but also can further reduce the installation gap between the motor shaft 310 and the positioning hole 102 and the limiting hole 401, and further facilitates reducing the leakage of microwaves in the cooking cavity 100.

[0052] Specifically, Figure 4 As shown, the motor 300 is installed at the rear of the cooking cavity 100 (front and rear direction as shown in FIG. Figure 4 As shown by arrow B in the figure, the cooking cavity 100 has a rear plate 120, and the mounting hole 101 and the positioning hole 102 are both formed on the rear plate 120. This facilitates forming a food material access opening in front of the cooking cavity 100, thereby improving the user's comfort. At the same time, it further facilitates the processing and forming of the mounting hole 101 and the positioning hole 102, thereby improving the production efficiency of the cooking utensil 1.

[0053] Other structures and operations of the microwave cooking appliance according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0054] 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 positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0055] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A microwave cooking device, characterized in that: include: case; A cooking cavity, the cooking cavity is arranged in the shell, the cooking cavity is provided with a mounting hole penetrating the cooking cavity along the thickness direction and a positioning hole penetrating the cooking cavity along the thickness direction, the mounting hole is connected to the positioning hole; a fan, the fan being rotatably disposed in the cooking cavity; A motor, wherein the motor has a motor shaft, a retaining ring is provided on the motor shaft, the motor is installed in the housing and outside the cooking cavity, the retaining ring is suitable for passing through the mounting hole, and the motor shaft is suitable for moving between the mounting hole and the positioning hole; A pressure plate, which is installed on the cooking cavity, and is provided with a limiting hole that passes through the pressure plate along the thickness direction, and is provided with a mounting groove that connects the limiting hole and the edge of the pressure plate, and the motor shaft is suitable for passing through the mounting groove and fitting in the limiting hole, and the central axis of the limiting hole coincides with the central axis of the positioning hole, and the diameters of the positioning hole and the limiting hole are smaller than the diameter of the retaining ring.

2. The microwave cooking device according to claim 1, characterized in that: The extending direction of the mounting groove from the limiting hole is opposite to the direction from the positioning hole to the mounting hole.

3. The microwave cooking device according to claim 1, characterized in that: The pressing plate is attached to the cooking cavity.

4. The microwave cooking device according to claim 1, characterized in that: A boss is formed on the pressing plate, the limiting hole is formed on the top wall of the boss, a ring is formed on the cooking utensil, the mounting hole and the positioning hole are arranged on the inner side of the ring, and the boss is fitted in the ring.

5. The microwave cooking device according to claim 1, characterized in that: The pressing plate is installed inside the cooking cavity.

6. The microwave cooking device according to claim 1, characterized in that: It also includes a heat insulation plate, which is installed outside the cooking cavity and is provided with a first through hole and a second through hole that are compatible with the positioning hole and the mounting hole, and the first through hole is connected to the second through hole.

7. The microwave cooking device according to claim 1, characterized in that: The mounting hole and the positioning hole are connected via a connecting groove, and two edges of the connecting groove are tangent to the mounting hole and the positioning hole respectively.

8. The microwave cooking device according to claim 1, characterized in that: The diameter of the limiting hole is equal to the width of the mounting groove.

9. The microwave cooking device according to claim 1, characterized in that: The diameter of the positioning hole is equal to the diameter of the limiting hole.

10. The microwave cooking device according to claim 1, characterized in that: The motor is installed at the rear of the cooking cavity, and the cooking cavity has a rear plate, and the installation hole and the positioning hole are both formed on the rear plate.

Images