Transformer structure and cooking appliance

Abstract

The utility model relates to the technical field of household appliances, disclose a transformer structure and cooking appliance, the transformer structure is suitable for fixing on the bottom plate of cooking appliance, include: transformer body, base, fixed in the bottom of transformer body, the base includes board body and convex part, the convex part is located at the first side of board body, the convex part is coplanar with board body and projects in the projection area of transformer body on the base, the utility model increases the contact area with the bottom plate, effectively disperses the impact load originally concentrated in the local to the larger area, makes the stress reduction of bottom plate unit area when falling impact, thereby reduces the deformation of transformer structure and bottom plate contact area after falling test, significantly improves the impact resistance of product, and prolongs the service life of complete machine further.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to transformer structure and cooking appliances. Background Technology

[0002] In cooking appliances such as microwave ovens, the transformer is a core component, playing a crucial role in providing high-voltage power to the magnetron. Transformers using this technology employ a core made of high-density silicon steel sheets, coupled with multi-layered thick copper wire windings. This ensures both excellent magnetic permeability and meets the demands of high-voltage, high-current operation. While this design guarantees the transformer's performance stability, it also results in a relatively large overall weight.

[0003] Microwave oven base plates are typically made of galvanized steel or stainless steel, and due to cost and weight considerations, they are often quite thin. In actual use, especially under extreme conditions such as drop tests, the heavy transformer exerts concentrated pressure on the base plate, causing deformation and dents in the contact area. Therefore, this structural design damage not only affects the product's appearance but also reduces the overall lifespan of the microwave oven. Utility Model Content

[0004] In view of this, the present invention provides a transformer structure and a cooking appliance to solve the problem that transformers in related technologies are prone to causing deformation and denting of the base plate.

[0005] In a first aspect, this utility model provides a transformer structure suitable for fixing to the base plate of a cooking appliance, comprising:

[0006] Transformer body;

[0007] A base is fixed to the bottom of the transformer body. The base includes a plate body and a protrusion. The protrusion is located on the first side of the plate body. The protrusion is coplanar with the plate body and protrudes beyond the projection area of ​​the transformer body on the base.

[0008] Beneficial effects: By fixing a base to the bottom of the transformer body, the base includes a plate body and a protrusion. The protrusion is located on the first side of the plate body, coplanar with the plate body, and protrudes beyond the projection area of ​​the transformer body on the base. When the transformer structure is fixed to the base plate, the contact area with the base plate is increased. This effectively disperses the impact load, which was originally concentrated in a local area, to a larger area, reducing the force per unit area of ​​the base plate during drop impact. This reduces the deformation of the contact area between the transformer structure and the base plate after drop testing, significantly improving the product's impact resistance and extending the overall service life. Furthermore, since the protrusion is only located on the first side of the plate body, the cost is lower.

[0009] In one alternative embodiment, the length of the side of the protrusion connected to the plate body is less than the length of the first side of the plate body.

[0010] Beneficial effects: The length of the side of the protrusion connected to the plate body is less than the length of the first side of the plate body, that is, the length of the protrusion is less than the length of the plate body, which can further save costs. Under the premise of saving costs, the contact area with the base plate is increased, and the impact load that was originally concentrated in a local area is effectively distributed to a larger area. This reduces the force per unit area of ​​the base plate during drop impact, thereby reducing the deformation of the transformer structure in the contact area with the base plate after the drop test, significantly improving the impact resistance of the product, and thus extending the service life of the whole machine.

[0011] In one alternative embodiment, the midpoint of the side of the protrusion connected to the plate body coincides with the midpoint of the first side of the plate body.

[0012] Beneficial effect: The midpoint of the side of the protrusion connected to the plate body coincides with the midpoint of the first side of the plate body, so the protrusion can be subjected to balanced force and avoid deformation caused by uneven force.

[0013] In one alternative embodiment, the protrusion is trapezoidal, and the length of the protrusion on the side away from the plate body is less than the length of the side of the protrusion connected to the plate body.

[0014] Beneficial effects: The protrusion is trapezoidal, and the length of the side of the protrusion away from the plate body is less than the length of the side of the protrusion connected to the plate body. The length of the side of the protrusion connected to the plate body is relatively large, and the length of the side of the protrusion away from the plate body is relatively small. Therefore, the overall strength of the base can be ensured. At the same time, it can increase the contact area with the base plate while saving costs. The impact load that was originally concentrated in a local area is effectively distributed to a larger area, which reduces the force per unit area of ​​the base plate during drop impact. This reduces the deformation of the transformer structure in the contact area with the base plate after drop test, significantly improves the impact resistance of the product, and thus extends the service life of the whole machine.

[0015] In one alternative embodiment, the plate body is provided with at least one recess.

[0016] Beneficial effects: The recessed part can further save costs and reduce the weight of the entire transformer structure.

[0017] In one optional embodiment, the recess is provided on the second side of the plate body, the second side being opposite to the first side, and the recess direction of the recess is consistent with the protrusion direction of the protrusion.

[0018] Beneficial effects: The recessed part is located on the second side of the plate body, which is opposite to the first side. The recessed direction is consistent with the protruding direction of the protruding part, which facilitates the mold opening of the base.

[0019] In one alternative embodiment, the recessed portion has the same shape as the protruding portion.

[0020] Beneficial effects: The concave and convex parts have the same shape, which facilitates the processing of the base and the mold making.

[0021] In one alternative embodiment, the base is welded to the transformer body.

[0022] Beneficial effects: Welding the base to the transformer body ensures a stable connection between the base and the transformer body, and the flat bottom surface of the base facilitates connection with the base plate.

[0023] Secondly, this utility model also provides a cooking appliance, comprising:

[0024] The housing includes a base plate;

[0025] The transformer structure is described above, with the base fixed to the bottom plate.

[0026] Beneficial effects: By fixing a base to the bottom of the transformer body, the base includes a plate body and a protrusion. The protrusion is located on the first side of the plate body, coplanar with the plate body, and protrudes beyond the projection area of ​​the transformer body on the base. This increases the contact area between the transformer structure and the base plate, effectively dispersing the impact load, which was originally concentrated in a localized area, to a larger area. This reduces the force per unit area of ​​the base plate during drop impact, thereby reducing the deformation of the contact area between the transformer structure and the base plate after the drop test, significantly improving the product's impact resistance, and thus extending the overall service life. Furthermore, since the protrusion is only located on the first side of the plate body, the cost is lower.

[0027] In one alternative embodiment, the housing includes opposing first and second side plates, the transformer structure is close to the second side plate, and the protrusion extends toward the second side plate.

[0028] Beneficial effects: As the protrusion extends toward the second side plate, it increases the contact area between the transformer structure and the base plate, effectively dispersing the impact load that was originally concentrated in a local area to a larger area. This reduces the force per unit area of ​​the base plate during drop impact, thereby reducing the deformation of the contact area between the transformer structure and the base plate after the drop test, significantly improving the product's impact resistance, and thus extending the service life of the entire machine. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a transformer structure according to an embodiment of the present utility model;

[0031] Figure 2 This is a schematic diagram of a cooking appliance according to an embodiment of the present utility model;

[0032] Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Transformer body; 2. Base; 201. Plate body; 202. Protrusion; 203. Recess; 3. Outer shell; 301. Bottom plate; 302. First side plate; 303. Second side plate; 4. Cooking cavity. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0038] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] In cooking appliances such as microwave ovens, the transformer is a core component, playing a crucial role in providing high-voltage power to the magnetron. Transformers using this technology employ a core made of high-density silicon steel sheets, coupled with multi-layered thick copper wire windings. This ensures both excellent magnetic permeability and meets the demands of high-voltage, high-current operation. While this design guarantees the transformer's performance stability, it also results in a relatively large overall weight.

[0040] Microwave oven base plates are typically made of galvanized steel or stainless steel, and due to cost and weight considerations, they are often quite thin. In actual use, especially under extreme conditions such as drop tests, the heavy transformer exerts concentrated pressure on the base plate, causing deformation and dents in the contact area. Therefore, this structural design damage not only affects the product's appearance but also reduces the overall lifespan of the microwave oven.

[0041] Related technology discloses a microwave oven, comprising: an outer shell; an inner liner disposed within the outer shell, forming a mounting cavity between the inner liner and the outer shell; a transformer disposed on the bottom plate of the outer shell and located within the mounting cavity; and a vibration damping member supported between the transformer and the bottom plate. The transformer has connecting edges with multiple connecting holes, through which screws are screwed into the bottom plate. The presence of connecting edges around the transformer increases the overall cost.

[0042] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0043] According to an embodiment of the present invention, a transformer structure is provided, which is suitable for fixing on the base plate 301 of a cooking appliance, including a transformer body 1 and a base 2.

[0044] The base 2 is fixed to the bottom of the transformer body 1. The base 2 includes a plate body 201 and a protrusion 202. The protrusion 202 is located on the first side of the plate body 201. The protrusion 202 is coplanar with the plate body 201 and protrudes from the projection area of ​​the transformer body 1 on the base 2.

[0045] In this embodiment, by fixing a base 2 at the bottom of the transformer body 1, the base 2 includes a plate body 201 and a protrusion 202. The protrusion 202 is located on the first side of the plate body 201, and the protrusion 202 is coplanar with the plate body 201 and protrudes from the projection area of ​​the transformer body 1 on the base 2. When the transformer structure is fixed on the base plate 301, the contact area with the base plate 301 is increased, and the impact load that was originally concentrated in a local area is effectively dispersed to a larger area. This reduces the force per unit area of ​​the base plate 301 during drop impact, thereby reducing the deformation of the contact area between the transformer structure and the base plate 301 after the drop test, significantly improving the impact resistance of the product, and thus extending the service life of the whole machine.

[0046] In addition, since the protrusion 202 is only provided on the first side of the plate body 201, the cost is lower.

[0047] In one specific embodiment, the transformer body 1 includes an iron core and windings. The iron core is made of high-density silicon steel sheets stacked together, and the windings are multi-layer thick copper wire windings.

[0048] Specifically in one embodiment, such as Figure 1 As shown, the protrusion 202 is located on the right side of the plate body 201, protruding to the right from the plate body 201. This can increase the contact area with the base plate 301 while saving costs, effectively dispersing the impact load that was originally concentrated in a local area to a larger area. This reduces the force per unit area of ​​the base plate 301 during drop impact, thereby reducing the deformation of the transformer structure in the contact area with the base plate 301 after the drop test, significantly improving the product's impact resistance, and thus extending the service life of the whole machine.

[0049] Of course, in an embodiment not shown in the figure, the protrusion 202 may be provided on one of the left, front, or rear sides of the plate body 201.

[0050] In one embodiment, the length of the side of the protrusion 202 connected to the plate body 201 is less than the length of the first side of the plate body 201.

[0051] In this embodiment, the length of the side of the protrusion 202 connected to the plate body 201 is less than the length of the first side of the plate body 201, that is, the length of the protrusion 202 is less than the length of the plate body 201, which can further save costs. Under the premise of saving costs, the contact area with the base plate 301 is increased, and the impact load that was originally concentrated in a local area is effectively dispersed to a larger area, so that the force per unit area of ​​the base plate 301 is reduced during drop impact, thereby reducing the deformation of the transformer structure in the contact area with the base plate 301 after the drop test, significantly improving the impact resistance of the product, and thus extending the service life of the whole machine.

[0052] Specifically, the maximum length of the protrusion 202 is less than the length of the first side of the plate body 201.

[0053] It should be noted that the length of the protrusion 202 refers to its length in the front-to-back direction, and the length of the first side of the plate body 201 also refers to its length in the front-to-back direction.

[0054] Specifically, the length of the side of the protrusion 202 connected to the plate body 201 refers to the length of the left side of the protrusion 202, and the length of the first side of the plate body 201 refers to the length of the right side of the plate body 201.

[0055] Specifically, the length of the left side of the protrusion 202 is approximately half the length of the right side of the plate body 201.

[0056] In one embodiment not shown in the figure, the length of the side of the protrusion 202 connected to the plate body 201 is equal to the length of the first side of the plate body 201. Specifically, the length of the left side of the protrusion 202 is equal to the length of the right side of the plate body 201. Compared with related technologies, since the protrusion 202 is only provided on the first side of the plate body 201, it is still possible to increase the contact area with the base plate 301 while saving costs. This effectively disperses the impact load that was originally concentrated in a local area to a larger area, reducing the force per unit area of ​​the base plate 301 during drop impact. This reduces the deformation of the contact area between the transformer structure and the base plate 301 after the drop test, significantly improving the impact resistance of the product and extending the service life of the whole machine.

[0057] In one embodiment, the midpoint of the side of the protrusion 202 connected to the plate body 201 coincides with the midpoint of the first side of the plate body 201.

[0058] In this embodiment, the midpoint of the side of the protrusion 202 connected to the plate body 201 coincides with the midpoint of the first side of the plate body 201, so that the protrusion 202 can be subjected to balanced force and avoid deformation due to uneven force.

[0059] In one specific embodiment, the length of the left side of the protrusion 202 is approximately equal to half the length of the right side of the plate body 201, and the midpoint of the left side of the protrusion 202 coincides with the midpoint of the right side of the plate body 201.

[0060] In one embodiment, the protrusion 202 is trapezoidal, and the length of the side of the protrusion 202 away from the plate body 201 is less than the length of the side of the protrusion 202 connected to the plate body 201.

[0061] In this embodiment, the protrusion 202 is trapezoidal, and the length of the side of the protrusion 202 away from the plate body 201 is less than the length of the side of the protrusion 202 connected to the plate body 201. The length of the side of the protrusion 202 connected to the plate body 201 is relatively large, and the length of the side of the protrusion 202 away from the plate body 201 is relatively small. Therefore, the overall strength of the base 2 can be ensured, and the contact area with the base plate 301 can be increased while saving costs. The impact load that was originally concentrated in a local area is effectively distributed to a larger area, so that the force per unit area of ​​the base plate 301 is reduced during drop impact. This reduces the deformation of the transformer structure in the contact area with the base plate 301 after the drop test, significantly improves the impact resistance of the product, and thus extends the service life of the whole machine.

[0062] In one embodiment, the plate body 201 is provided with at least one recess 203.

[0063] In this embodiment, the recess 203 can further save costs and reduce the weight of the entire transformer structure.

[0064] In one embodiment, the recess 203 is provided on the second side of the plate body 201, the second side is opposite to the first side, and the recess direction of the recess 203 is consistent with the protrusion direction of the protrusion 202.

[0065] In this embodiment, the recessed portion 203 is provided on the second side of the plate body 201, the second side is opposite to the first side, and the recessed direction of the recessed portion 203 is consistent with the protruding direction of the protruding portion 202, which facilitates the mold opening of the base 2.

[0066] It should be noted that base 2 is a one-piece structure.

[0067] In one specific embodiment, the recessed portion 203 is located on the left side of the plate body 201, and the protruding portion 202 is located on the right side of the plate body 201. The recessed portion 203 faces the recess, and the protruding portion 202 protrudes to the right.

[0068] In one embodiment, the recessed portion 203 has the same shape as the protruding portion 202.

[0069] In this embodiment, the recessed portion 203 and the protruding portion 202 have the same shape, which facilitates the processing of the base 2 and the mold opening.

[0070] In one specific embodiment, both the recessed portion 203 and the protruding portion 202 are isosceles trapezoids.

[0071] In one embodiment, the base 2 is welded to the transformer body 1.

[0072] In this embodiment, the base 2 is welded to the transformer body 1, which can ensure a stable connection between the base 2 and the transformer body 1, and the bottom surface of the base 2 is flat, which facilitates connection with the base plate 301.

[0073] In one specific embodiment, chamfers are provided at all four corners of the plate body 201.

[0074] In this embodiment, by setting chamfers at the four corners of the plate body 201, the weight of the transformer structure can be reduced on the one hand, and the mold opening can be facilitated on the other hand.

[0075] In one specific embodiment, a large through hole is provided at the center of the plate body 201, which can reduce the weight of the transformer structure.

[0076] In one specific embodiment, the plate body 201 is provided with multiple connection holes to facilitate the connection between the transformer structure and the base plate 301.

[0077] According to an embodiment of the present invention, another aspect is provided: a cooking appliance including a housing 3 and the transformer structure provided in the above embodiment.

[0078] The outer casing 3 includes a base plate 301; the base 2 of the transformer structure is fixed to the base plate 301.

[0079] In this embodiment, a base 2 is fixed to the bottom of the transformer body 1. The base 2 includes a plate body 201 and a protrusion 202. The protrusion 202 is located on the first side of the plate body 201, is coplanar with the plate body 201, and protrudes beyond the projection area of ​​the transformer body 1 on the base 2. This increases the contact area between the transformer structure and the base plate 301, effectively dispersing the impact load, which was originally concentrated in a localized area, to a larger area. This reduces the force per unit area of ​​the base plate 301 during drop impact, thereby reducing the deformation of the contact area between the transformer structure and the base plate 301 after the drop test, significantly improving the product's impact resistance, and thus extending the overall service life. Furthermore, since the protrusion 202 is only located on the first side of the plate body 201, the cost is lower.

[0080] In one embodiment, such as Figure 2 and Figure 3 As shown, the housing 3 includes a first side plate 302 and a second side plate 303 opposite to each other, the transformer structure is close to the second side plate 303, and the protrusion 202 extends toward the second side plate 303.

[0081] In this embodiment, since the protrusion 202 extends toward the second side plate 303, it increases the contact area between the transformer structure and the base plate 301, effectively dispersing the impact load that was originally concentrated in a local area to a larger area, reducing the force per unit area of ​​the base plate 301 during drop impact, thereby reducing the deformation of the contact area between the transformer structure and the base plate 301 after the drop test, significantly improving the product's impact resistance, and thus extending the service life of the whole machine.

[0082] In one specific embodiment, a cooking cavity 4 is provided inside the outer shell 3. The transformer is located on the side of the cooking cavity 4 near the second side plate 303. The protrusion 202 extends toward the second side plate 303 and abuts against the second side plate 303, which can further increase the contact area between the transformer structure and the base plate 301, effectively dispersing the impact load that was originally concentrated in a local area to a larger area, reducing the force per unit area of ​​the base plate 301 during drop impact, thereby reducing the deformation of the contact area between the transformer structure and the base plate 301 after the drop test, significantly improving the impact resistance of the product, and thus extending the service life of the whole machine.

[0083] In one specific embodiment, an installation space is formed between the cooking cavity 4 and the second side plate 303, and a magnetron, a fan, and a transformer structure are installed in the installation space.

[0084] In one specific embodiment, the cooking appliance is a microwave oven.

[0085] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A transformer structure suitable for fixing on the base plate (301) of a cooking appliance, characterized in that, include: Transformer body (1); The base (2) is fixed to the bottom of the transformer body (1). The base (2) includes a plate body (201) and a protrusion (202). The protrusion (202) is located on the first side of the plate body (201). The protrusion (202) is coplanar with the plate body (201) and protrudes from the projection area of ​​the transformer body (1) on the base (2).

2. The transformer structure according to claim 1, characterized in that, The length of the side of the protrusion (202) connected to the plate body (201) is less than the length of the first side of the plate body (201).

3. The transformer structure according to claim 2, characterized in that, The midpoint of the side of the protrusion (202) connected to the plate body (201) coincides with the midpoint of the first side of the plate body (201).

4. The transformer structure according to any one of claims 1 to 3, characterized in that, The protrusion (202) is trapezoidal, and the length of the side of the protrusion (202) away from the plate body (201) is less than the length of the side of the protrusion (202) connected to the plate body (201).

5. The transformer structure according to any one of claims 1 to 3, characterized in that, The plate body (201) is provided with at least one recess (203).

6. The transformer structure according to claim 5, characterized in that, The recessed portion (203) is provided on the second side of the plate body (201), the second side being opposite to the first side, and the recessed direction of the recessed portion (203) is consistent with the protruding direction of the protruding portion (202).

7. The transformer structure according to claim 5, characterized in that, The recessed portion (203) has the same shape as the protruding portion (202).

8. The transformer structure according to any one of claims 1 to 3, 6, and 7, characterized in that, The base (2) is welded to the transformer body (1).

9. A cooking appliance, characterized in that, include: The outer casing (3) includes a base plate (301); The transformer structure according to any one of claims 1 to 8, wherein the base (2) is fixed to the base plate (301).

10. The cooking appliance according to claim 9, characterized in that, The housing (3) includes a first side plate (302) and a second side plate (303) opposite each other, the transformer structure is close to the second side plate (303), and the protrusion (202) extends toward the second side plate (303).

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