Pot body of cooking utensil

Abstract

The pot body of the cooking utensil comprises a shell and a base connected with the shell, a circuit board assembly and a fan used for conducting heat dissipation on the circuit board assembly are arranged in the shell, an air inlet area located below the fan is arranged on the bottom wall of the base, the air inlet area comprises a plurality of first bottom air inlet holes, and a plurality of second bottom air inlet holes are formed in the bottom wall of the base. The bottom wall of the base is locally arched upwards to form an air inlet groove surrounding the outer side of the air inlet area, the air inlet groove is provided with an inner ring wall which is connected with the air inlet area and extends upwards, and the inner ring wall is provided with side air inlet holes located below the fan. According to the pot body, under the condition that the air inlet area is shielded by foreign matter, external wind energy can be sucked into the base by the fan through the side air inlet holes, so that the cooling and heat dissipation effects on the circuit board assembly are guaranteed.

Description

[Technical field]

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a pot body of a cooking utensil. [Background technology]

[0002] The pot body of the cooking utensil in the prior art includes a shell and a base connected to the shell. A circuit board assembly and a fan for dissipating heat from the circuit board assembly are arranged in the shell. The bottom wall of the base is provided with an air inlet area located below the fan. The air inlet area includes a plurality of first bottom air inlet holes. When the fan is working, the wind enters the base through the first bottom air inlet holes and is blown toward the circuit board assembly by the fan to achieve cooling and heat dissipation of the circuit board assembly. Since the bottom wall of the entire base is planar, if a user leaves foreign matter such as a rag or a plastic bag on the countertop at the air inlet area during use, the airflow generated by the fan can easily absorb the foreign matter and cover part or the entire air inlet area, resulting in obstruction of cooling of the circuit board assembly, causing the temperature of the circuit board assembly to rise and be damaged. [Contents of the utility model]

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a pot body of a cooking utensil, which can allow external wind to be sucked into the base through the side air inlet holes by the fan when there are foreign objects blocking the air inlet area, so as to ensure the cooling and heat dissipation effect of the circuit board assembly.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A pot body of a cooking utensil comprises an outer shell and a base connected to the outer shell, wherein a circuit board assembly and a fan for dissipating heat to the circuit board assembly are arranged in the outer shell, and an air inlet area located below the fan is arranged on the bottom wall of the base, and the air inlet area includes a plurality of first bottom air inlet holes, and the bottom wall of the base is partially arched upward to form an air inlet groove surrounding the outside of the air inlet area, and the air inlet groove has an inner annular wall connected to the air inlet area and extending upward, and the inner annular wall is provided with side air inlet holes located below the fan.

[0006] In the pot body of the cooking utensil, the top surface of the inner annular wall is higher than the bottom surface of the fan, so that the inner annular wall surrounds and wraps around the outside of the fan.

[0007] In the pot body of the above cooking utensil, the inner annular wall comprises a matching section, and the matching section is tightly matched with the outer side surface of the fan.

[0008] In the pot body of the cooking utensil, the distance between the top surface of the matching section and the bottom surface of the fan is greater than 2 mm.

[0009] In the pot body of the above cooking utensil, the inner annular wall further comprises a guide section, the bottom end of the guide section is connected to the top end of the matching section, and the guide section is a conical wall which gradually expands upward.

[0010] In the pot body of the above cooking utensil, the projection width of the guide section on the bottom wall of the base is greater than 4 mm.

[0011] In the pot body of the above cooking utensil, a plurality of second bottom air inlet holes are further provided at the edge of the air inlet area, and the second bottom air inlet holes are connected to the side air inlet holes in a one-to-one correspondence.

[0012] In the pot body of the above cooking utensil, the bottom surface of the base is also provided with an air inlet notch which is recessed upwards, one end of the air inlet notch extends to the outer ring wall of the air inlet groove, and the other end extends to the rear side surface of the base.

[0013] In the pot body of the above-mentioned cooking utensil, the bottom wall of the base is also provided with an air outlet and a wind shield rib protruding downward, wherein the wind shield rib is located between the air outlet and the air inlet slot to prevent the hot air discharged from the air outlet from blowing toward the air inlet slot.

[0014] In the pot body of the above-mentioned cooking utensil, the pot body also includes an outer pot placed in the outer shell, the circuit board assembly includes a bracket fixed on the side wall of the outer pot, and a circuit board installed on the side of the bracket away from the outer pot, the circuit board includes an IGBT module, and the fan is installed at the bottom of the bracket and blows heat dissipation air toward the IGBT module.

[0015] Beneficial effects of the utility model:

[0016] In the utility model, the bottom wall of the base is partially arched upward to form an air inlet groove surrounding the outside of the air inlet area, and the air inlet groove has an inner ring wall connected to the air inlet area and extending upward, and the inner ring wall is provided with a side air inlet hole located below the fan. In this way, the risk of all the air inlets being blocked by foreign objects can be reduced by the design of the air inlet groove. Even if there are foreign objects such as towels and plastic bags on the table that block all the first bottom air inlets in the air inlet area, the outside wind can still enter the air inlet groove and be sucked into the base by the fan through the side air inlet holes provided on the inner ring wall of the air inlet groove, so as to ensure the cooling and heat dissipation effect of the circuit board assembly and avoid the circuit board assembly from being damaged due to the increase of temperature; in addition, when there is no foreign object blocking the air inlet area, the provision of the side air inlet hole also increases the air inlet area of ​​the base, thereby increasing the air intake volume, and further improving the cooling and heat dissipation effect of the circuit board assembly.

[0017] The top surface of the inner ring wall is higher than the bottom surface of the fan, so that the inner ring wall surrounds and wraps around the outside of the fan. This design can effectively reduce the amount of external wind entering the base and escaping into the space surrounded by the outer shell and the base, that is, reduce the amount of air circulating in the air, thereby increasing the amount of air sucked in by the fan, so that the fan blows more wind toward the circuit board assembly to ensure the cooling and heat dissipation effect of the circuit board assembly.

[0018] The inner ring wall includes a matching section, which is tightly matched with the outer side of the fan. Such a design can avoid the generation of an air leakage gap between the matching section and the outer side of the fan, thereby preventing the external wind from scattering through the air leakage gap into the space surrounded by the shell and the base to form an internal air circulation.

[0019] The distance between the top surface of the matching section and the bottom surface of the fan is greater than 2 mm. Such a design can avoid the air leakage gap between the matching section and the bottom surface of the fan due to processing errors or assembly errors, thereby reducing the processing accuracy of the fan and the base and the difficulty of assembling the two.

[0020] The inner ring wall also includes a guide section, the bottom end of which is connected to the top end of the mating section, and the guide section is a tapered wall that gradually expands upward. With this design, when the fan is assembled, the fan can be smoothly inserted into the mating section under the guidance of the guide section, thereby improving the assembly reliability of the fan.

[0021] The projection width of the guide section on the bottom wall of the base is greater than 4 mm. Such a design can not only enhance the structural strength of the guide section and facilitate the processing and forming of the guide section, but also improve the guiding effect of the fan during assembly, so as to further facilitate the assembly of the fan.

[0022] The edge of the air inlet area is also provided with a plurality of second bottom air inlet holes, which are connected to the side air inlet holes one by one. Such a design can not only further increase the air inlet area of ​​the base, thereby increasing the air intake volume, thereby improving the cooling and heat dissipation effect of the circuit board assembly; in addition, it is also conducive to the injection molding of the base.

[0023] The bottom surface of the base is also provided with an air inlet notch formed by an upward depression, one end of which extends to the outer ring wall of the air inlet slot, and the other end extends to the rear side of the base. This design prevents the air inlet notch from being blocked by foreign objects such as towels and plastic bags, so that the outside wind enters the air inlet slot through the air inlet notch and enters the base through the side air inlet hole, thus increasing the path for the outside wind to enter the air inlet slot.

[0024] The bottom wall of the base is also provided with an air outlet and a downwardly protruding wind shielding rib, which is located between the air outlet and the air inlet slot to prevent the hot air discharged from the air outlet from blowing toward the air inlet slot. This design prevents the air sucked in by the fan from being mixed with hot air, and ensures that the air sucked into the base is cold air, thereby improving the cooling and heat dissipation effect of the circuit board assembly.

[0025] The pot body also includes an outer pot placed in the outer shell, the circuit board assembly includes a bracket fixed on the side wall of the outer pot, and a circuit board installed on the side of the bracket away from the outer pot, the circuit board includes an IGBT module, and the fan is installed at the bottom of the bracket and blows the heat dissipation air to the IGBT module. Since the temperature rise of the IGBT module is relatively high, the fan is installed at the bottom of the bracket and blows the heat dissipation air to the IGBT module, which can improve the heat dissipation effect of the IGBT module.

[0026] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings.

Brief Description of the Drawings

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the explosion of the pot body in the utility model;

[0029] Figure 2 The structure diagram of the base in the utility model is shown in FIG. Figure 1 ;

[0030] Figure 3 The structure of the base in the utility model is shown in FIG. Figure 2 ;

[0031] Figure 4 It is a cross-sectional view of the base in the utility model;

[0032] Figure 5 It is a cross-sectional view of the pot body in the utility model;

[0033] Figure 6 for Figure 5 A is a partial enlarged schematic diagram;

[0034] Figure 7 It is a structural schematic diagram of the circuit board in the utility model.

[0035] Reference numerals:

[0036] 100, outer shell; 200, base; 210, air inlet area; 211, first bottom air inlet hole; 212, second bottom air inlet hole; 220, air inlet slot; 221, inner ring wall; 2210, side air inlet hole; 2211, matching section; 2212, guide section; 222, outer ring wall; 223, top wall; 230, air inlet gap; 240, air outlet; 250, wind shield; 260, rear support foot; 300, middle ring; 400, outer pot; 500, inner pot; 600, circuit board assembly; 610, bracket; 620, circuit board; 621, IGBT module; 630, fireproof cover; 700, fan. [Specific implementation method]

[0037] The utility model provides a pot body of a cooking utensil, comprising an outer shell and a base connected to the outer shell, wherein a circuit board assembly and a fan for dissipating heat to the circuit board assembly are arranged in the outer shell, and an air inlet area located below the fan is arranged on the bottom wall of the base, wherein the air inlet area includes a plurality of first bottom air inlet holes, and the bottom wall of the base is partially arched upward to form an air inlet groove surrounding the outer side of the air inlet area, wherein the air inlet groove has an inner annular wall connected to the air inlet area and extending upward, and the inner annular wall is provided with side air inlet holes located below the fan.

[0038] In the utility model, the bottom wall of the base is partially arched upward to form an air inlet groove surrounding the outside of the air inlet area, and the air inlet groove has an inner ring wall connected to the air inlet area and extending upward, and the inner ring wall is provided with a side air inlet hole located below the fan. In this way, the risk of all the air inlets being blocked by foreign objects can be reduced by the design of the air inlet groove. Even if there are foreign objects such as towels and plastic bags on the table that block all the first bottom air inlets in the air inlet area, the outside wind can still enter the air inlet groove and be sucked into the base by the fan through the side air inlet holes provided on the inner ring wall of the air inlet groove, so as to ensure the cooling and heat dissipation effect of the circuit board assembly and avoid the circuit board assembly from being damaged due to the increase of temperature; in addition, when there is no foreign object blocking the air inlet area, the provision of the side air inlet hole also increases the air inlet area of ​​the base, thereby increasing the air intake volume, and further improving the cooling and heat dissipation effect of the circuit board assembly.

[0039] The technical scheme of the embodiment of the utility model is explained and illustrated below in conjunction with the drawings of the embodiment of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work all belong to the protection scope of the utility model. In addition, it should be understood that the following words indicating orientation or position relationship such as "up", "down", "left", "right", "longitudinal", "lateral", "inside", "outside", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0040] Reference Figures 1 to 7As shown, the pot body of the cooking utensil in this embodiment includes an outer shell 100, a base 200, a middle ring 300, an outer pot 400 and an inner pot 500, wherein the outer shell 100 is an annular shell, the outer shell 100 is connected between the middle ring 300 and the base 200, the outer pot 400 is installed in a space surrounded by the outer shell 100, the base 200 and the middle ring 300, the inner pot 500 is placed in the outer pot 400 in a removable manner, a circuit board assembly 600 is arranged between the side walls of the outer shell 100 and the outer pot 400, a fan 700 for dissipating heat to the circuit board assembly 600 is arranged below the circuit board assembly 600, and the bottom of the base 200 is provided with a fan 700 for dissipating heat to the circuit board assembly 600. The wall is provided with an air inlet area 210 located below the fan 700, and the air inlet area 210 includes a plurality of first bottom air inlet holes 211. The bottom wall of the base 200 is partially arched upward to form an air inlet groove 220 surrounding the outside of the air inlet area 210. The lower end of the air inlet groove 220 is open and the top is closed. The wall portion of the air inlet groove 220 includes an inner annular wall 221, an outer annular wall 222 and a top wall 223 connected between the top surface of the inner annular wall 221 and the top surface of the outer annular wall 222, wherein the bottom end of the inner annular wall 221 is connected to the air inlet area 210 and extends upward, and the inner annular wall 221 is provided with a side air inlet hole 2210 located below the fan 700. In this way, the risk of all air inlets being blocked by foreign objects can be reduced through the design of the air inlet slot 220. Even if there are foreign objects such as towels and plastic bags on the table that block all the first bottom air inlet holes 211 in the air inlet area, the outside wind can still enter the air inlet slot 220 and be sucked into the base 200 by the fan 700 through the side air inlet holes 2210 provided on the inner ring wall 221 of the air inlet slot 220, so as to ensure the cooling and heat dissipation effect of the circuit board assembly 600 and avoid the circuit board assembly 600 from being damaged due to the increase in temperature. In addition, when there is no foreign object blocking the air inlet area 210, the provision of the side air inlet holes 2210 also increases the air inlet area of ​​the base 200, thereby increasing the air intake volume, and further improving the cooling and heat dissipation effect of the circuit board assembly 600.

[0041] like Figure 1 , Figure 2 , Figures 4 to 7As shown, the circuit board assembly 600 in this embodiment includes a bracket 610, a circuit board 620 and a fireproof cover 630, wherein the bracket 610 is fixed on the side wall of the outer pot, and the circuit board 620 is installed on the side of the bracket 610 away from the outer pot 400, the fireproof cover 630 is installed on the side of the bracket 610 away from the outer pot 400 and defines a cavity with the bracket 610 to accommodate the circuit board 620, the fan 700 is installed at the bottom of the bracket 610, the circuit board 620 includes an IGBT module 621 arranged near the fan 700, and the lower end of the cavity has an opening open to the air outlet side of the fan 700, so that the fan 700 blows the heat dissipation wind toward the IGBT module 621. Since the temperature rise of the IGBT module 621 is relatively high, the fan 700 is installed at the bottom of the bracket 610 and blows the heat dissipation wind toward the IGBT module 621, which can improve the heat dissipation effect of the IGBT module 621.

[0042] In addition, the inner ring wall 221 and the air inlet area 210 in this embodiment form a concave cavity. If the bottom surface of the fan 700 is higher than the top surface of the inner ring wall 221, when the external wind is sucked into the concave cavity, more wind will escape from the gap between the fan 700 and the top surface of the inner ring wall to the space surrounded by the housing 100 and the base 200 to form an air internal circulation, thereby reducing the amount of wind sucked by the fan 700 and blown toward the IGBT module 621, affecting the heat dissipation effect of the IGBT module 621. In this embodiment, the inner ring wall 221 The top surface of the fan 700 is higher than the bottom surface of the fan 700, and the inner annular wall 221 surrounds and wraps around the outside of the fan 700 so that the bottom surface of the fan 700 is located in the concave cavity. Such a design can effectively reduce the amount of external wind entering the concave cavity and escaping into the space surrounded by the housing 100 and the base 200, that is, reduce the amount of air circulating in the air, thereby increasing the amount of air sucked in by the fan 700, so that the fan 700 blows more wind toward the IGBT module 621 to ensure the cooling and heat dissipation effect of the IGBT module 621.

[0043] Furthermore, in order to further reduce the amount of wind escaping and form an internal air circulation, the inner ring wall 221 in this embodiment includes a matching section 2211, and the matching section 2211 is closely matched with the outer side surface of the fan 700. Such a design can avoid the formation of an air leakage gap between the matching section 2211 and the outer side surface of the fan 700, thereby preventing the external wind from scattering through the air leakage gap into the space surrounded by the housing 100 and the base 200 to form an internal air circulation, thereby ensuring that all the external wind entering the concave cavity is sucked in by the fan 700 and blown toward the IGBT module 621, thereby improving the cooling and heat dissipation effect of the IGBT module 621.

[0044] In order to reduce the manufacturing cost, in this embodiment, the spacing L between the top surface of the matching section 2211 and the bottom surface of the fan 700 is greater than 2mm. This is because: when the spacing L between the top surface of the matching section 2211 and the bottom surface of the fan 700 is less than 2mm, due to the errors in the processing of the fan 700 and the base 200 and the assembly of the two, it may cause the top surface of the matching section 2211 to be lower than the bottom surface of the fan 700, thereby generating an air leakage gap. In order to avoid the air leakage gap, it is necessary to increase the processing accuracy of the fan 700 and the base 200 and the assembly accuracy of the two, which will lead to an increase in manufacturing costs. Therefore, in this embodiment, the spacing between the top surface of the matching section 2211 and the bottom surface of the fan 700 is greater than 2mm. Such a design can avoid the air leakage gap between the matching section 2211 and the bottom surface of the fan 700 due to processing errors or assembly errors, thereby reducing the processing accuracy of the fan 700 and the base 200 and the difficulty of assembling the two.

[0045] In order to facilitate the smooth insertion of the bottom surface of the fan 700 into the concave cavity, the inner annular wall 221 in this embodiment further includes a guide section 2212, the bottom end of the guide section 2212 is connected to the top end of the matching section 2211, and the guide section 2212 is a tapered wall that gradually expands upward. With such a design, when the fan 700 is assembled, the fan 700 can be smoothly inserted into the matching section 2211 through the guidance of the guide section 2212, thereby improving the assembly reliability of the fan 700.

[0046] Preferably, the projection width H of the guide section 2212 on the bottom wall of the base 200 is greater than 4 mm. When the projection width H of the guide section 2212 on the bottom wall of the base 200 is less than 4 mm, the guiding effect on the fan 700 is not good when the fan 700 is assembled, and the difficulty of processing and forming the guide section 2212 is also increased. For this reason, in this embodiment, the projection width H of the guide section 2212 on the bottom wall of the base 200 is greater than 4 mm, which can not only enhance the structural strength of the guide section 2212 and facilitate the processing and forming of the guide section 2212; it can also improve the guiding effect on the fan 700 when the fan 700 is assembled, so as to further facilitate the assembly of the fan 700.

[0047] In addition, if Figure 2 As shown, in this embodiment, a plurality of second bottom air inlet holes 212 are further provided at the edge of the air inlet area 210, and the second bottom air inlet holes 212 are connected with the side air inlet holes 2210 in a one-to-one correspondence, that is, the second bottom air inlet holes 212 are connected with the side air inlet holes 2210 to form an L-shaped hole. Such a design can not only further increase the air inlet area of ​​the base 200, thereby increasing the air intake volume, and further improving the cooling and heat dissipation effect of the circuit board assembly 600; in addition, it is also beneficial to the injection molding of the base 200.

[0048] Better, such as Figure 3 and Figure 4As shown, the bottom surface of the base 200 is further provided with an air inlet notch 230 which is recessed upwards, one end of the air inlet notch 230 extends to the outer ring wall 222, and the other end extends to the rear side of the base 200. With such a design, the air inlet notch 230 will not be blocked by foreign objects such as towels and plastic bags, so that the outside wind can enter the air inlet slot 220 through the air inlet notch 230, and enter the base 200 through the side air inlet hole 2210, that is, the path for the outside wind to enter the air inlet slot 220 is increased.

[0049] Finally, in this embodiment, the bottom wall of the base 200 is also provided with an air outlet 240 and a wind shield rib 250 protruding downward. The air outlet 240 is arranged near the front side of the bottom wall of the base 200, and the air inlet area 210 and the air inlet slot 220 are arranged near the rear side of the bottom wall of the base 200. The width of the air inlet slot 220 is 10 mm to 20 mm. The wind shield rib 250 is located between the air outlet 240 and the air inlet slot 220, and the wind shield rib 250 is connected between the two rear legs 260 of the base 200. The bottom surface of the wind shield rib 250 is not lower than the bottom surface of the rear legs 260 to prevent the hot air discharged from the air outlet 240 from blowing toward the air inlet slot 220. Such a design avoids the air sucked in by the fan 700 from being mixed with hot air, and also ensures that the air sucked into the base 200 is cold air, thereby improving the cooling and heat dissipation effect of the circuit board assembly 600.

[0050] In another embodiment of the present invention, the entire inner annular wall extends vertically, and the top surface of the inner annular wall is lower than the bottom surface of the fan, so that the inner annular wall surrounds and wraps around the outside of the fan.

[0051] In another embodiment of the present invention, the top surface of the inner annular wall may be arranged lower than the bottom surface of the fan.

[0052] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A pot body of a cooking utensil, comprising a shell and a base connected to the shell, wherein a circuit board assembly and a fan for dissipating heat from the circuit board assembly are arranged in the shell, and a bottom wall of the base is provided with an air inlet area located below the fan, wherein the air inlet area comprises a plurality of first bottom air inlet holes, characterized in that: The bottom wall of the base is partially arched upward to form an air inlet groove surrounding the outside of the air inlet area. The air inlet groove has an inner ring wall connected to the air inlet area and extending upward. The inner ring wall is provided with a side air inlet hole located below the fan.

2. The pot body of a cooking utensil according to claim 1, characterized in that: The top surface of the inner annular wall is higher than the bottom surface of the fan, so that the inner annular wall surrounds and wraps around the outside of the fan.

3. The pot body of a cooking utensil according to claim 2, characterized in that: The inner annular wall comprises a matching section, and the matching section is tightly matched with the outer side surface of the fan.

4. The pot body of a cooking utensil according to claim 3, characterized in that: The distance between the top surface of the matching section and the bottom surface of the fan is greater than 2 mm.

5. The pot body of a cooking utensil according to claim 3, characterized in that: The inner annular wall further comprises a guide section, the bottom end of which is connected to the top end of the matching section, and the guide section is a tapered wall which gradually expands upward.

6. The pot body of a cooking utensil according to claim 5, characterized in that: The projection width of the guide section on the bottom wall of the base is greater than 4 mm.

7. The pot body of a cooking utensil according to claim 1, characterized in that: A plurality of second bottom air inlet holes are also provided at the edge of the air inlet area, and the second bottom air inlet holes are connected to the side air inlet holes in a one-to-one correspondence.

8. The pot body of a cooking utensil according to claim 1, characterized in that: The bottom surface of the base is also provided with an air inlet notch which is recessed upwards, one end of the air inlet notch extends to the outer ring wall of the air inlet slot, and the other end extends to the rear side surface of the base.

9. The pot body of a cooking utensil according to claim 1, characterized in that: The bottom wall of the base is also provided with an air outlet and a wind shielding rib protruding downward, wherein the wind shielding rib is located between the air outlet and the air inlet slot to prevent the hot air discharged from the air outlet from blowing toward the air inlet slot.

10. The pot body of a cooking utensil according to claim 1, characterized in that: The pot body also includes an outer pot placed in the outer shell, the circuit board assembly includes a bracket fixed on the side wall of the outer pot, and a circuit board installed on the side of the bracket away from the outer pot, the circuit board includes an IGBT module, and the fan is installed at the bottom of the bracket and blows heat dissipation air toward the IGBT module.

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