Heat dissipation device, pot cover assembly and cooking utensil

Abstract

The application provides a heat dissipation device, a pot cover assembly and a cooking utensil. The heat dissipation device comprises a locking cover adapted to be rotatably buckled to a pot body, and a heat dissipation cover covered above the locking cover, and a heat dissipation cavity is formed between the locking cover and the heat dissipation cover, wherein the heat dissipation cover is provided with an air inlet and an air outlet. After cooking, external cold air can be introduced into the heat dissipation cavity through the air inlet, the external cold air exchanges heat with the locking cover, and the temperature of the locking cover is reduced, so that the temperature and pressure in the cooking cavity are reduced, and the locking cover is quickly opened after cooking. The air after heat exchange is discharged from the air outlet. Therefore, the technical scheme of the application solves the defects of the prior art, such as long waiting time for natural cooling after cooking of the electric pressure cooker, poor use experience of the locking cover, complex connection relationship of the heat dissipation cover and the fin, and low assembly efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a heat dissipation device, a pot cover assembly and a cooking appliance. BACKGROUND

[0002] Electric pressure cookers are commonly used household appliances. After the pressure cooking work of the pressure cooker is completed, the user cannot immediately open the cover to take out the food because the pressure in the pot is higher than the atmospheric pressure. In particular, for soup, liquid or viscous food, natural cooling requires a long waiting time because the food cannot be directly vented for rapid cooling (direct venting will cause the food to overflow). SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the defect that the electric pressure cooker in the prior art has a long natural cooling time after cooking, resulting in poor user experience, so as to provide a heat dissipation device, a pot cover assembly and a cooking appliance.

[0004] To solve the above problems, the present application provides a heat dissipation device, comprising: a cover lock adapted to be rotatably buckled to a pot body; a heat dissipation cover covering the upper part of the cover lock, a heat dissipation cavity being formed between the cover lock and the heat dissipation cover, wherein the heat dissipation cover is provided with an air inlet and an air outlet.

[0005] Optionally, the cover lock is provided with a first connecting structure, the heat dissipation cover is provided with a second connecting structure, and the first connecting structure and the second connecting structure are correspondingly arranged and connected to connect the heat dissipation cover and the cover lock.

[0006] Optionally, the heat dissipation device further comprises a fastener connected with the first connecting structure and the second connecting structure,

[0007] Optionally, the first connecting structure comprises a connecting arm, the upper end of the connecting arm is provided with a first connecting hole, the second connecting structure comprises a first connecting column, the first connecting column is provided with a second connecting hole, the second connecting hole penetrates through the heat dissipation cover, the first connecting hole and the second connecting hole are correspondingly arranged, and the fastener is arranged in the first connecting hole and the second connecting hole.

[0008] Optionally, the connecting arm is a plurality of connecting arms, at least part of the connecting arms has a bending section at both ends, and the middle part of the connecting arm is arranged close to the inner side wall of the heat dissipation cover.

[0009] Optionally, the first connecting structure comprises a connecting column, the second connecting structure comprises a second connecting column, the connecting column is provided with a third connecting hole, the second connecting column is provided with a fourth connecting hole, the fourth connecting hole penetrates through the heat dissipation cover, the upper end of the connecting column is arranged in the fourth connecting hole, and the fastener is arranged in the third connecting hole and the fourth connecting hole.

[0010] Optionally, the upper end of the first connecting column and the second connecting column is provided with a clamping head, and the cross-sectional outer contour of the first connecting column and the second connecting column is a waist-shaped structure.

[0011] Optionally, the first connecting structure includes a fifth connecting hole provided on the side wall of the lock cover, the second connecting structure includes a sixth connecting hole provided on the side wall of the heat dissipation cover, the fifth connecting hole and the sixth connecting hole are correspondingly arranged, and the fastener is arranged in the fifth connecting hole and the sixth connecting hole.

[0012] Optionally, the first connecting structure is a plurality of first connecting structures, the plurality of first connecting structures are arranged at intervals along the circumference of the lock cover, the second connecting structure is a plurality of second connecting structures, the plurality of second connecting structures are arranged at intervals along the circumference of the heat dissipation cover, and the plurality of first connecting structures and the plurality of second connecting structures are arranged one by one.

[0013] Optionally, the heat dissipation device further comprises fins and a positioning structure, the fins are arranged in the heat dissipation cavity, and the positioning structure is arranged on the lock cover and / or the heat dissipation cover.

[0014] Optionally, the positioning structure comprises a positioning protrusion, the positioning protrusion is arranged on the top wall of the heat dissipation cover, and the positioning protrusion cooperates with the end of the fin.

[0015] Optionally, the fins are a plurality of fins, the plurality of fins are arranged radially along the middle part of the lock cover, and the positioning protrusion is an annular structure.

[0016] Optionally, the side wall of the heat dissipation cover is provided with an air inlet, the positioning protrusion is provided with a notch, and the notch is arranged corresponding to the air inlet.

[0017] Optionally, among the plurality of fins, the upper end of one fin is connected with the upper end of the fin on one side thereof, and the lower end of the one fin is connected with the lower end of the fin on the other side thereof, so that the plurality of fins form an integral structure.

[0018] Optionally, the middle part of the heat dissipation cover is provided with a relief opening, and an exhaust port is formed between the inner edge of the relief opening and the lock cover.

[0019] Optionally, the heat dissipation device further comprises a first positioning plate and a first connecting arm, the first positioning plate is arranged in the relief opening, and the two ends of the first connecting arm are connected with the heat dissipation cover and the first positioning plate respectively.

[0020] Optionally, the lock cover is provided with an exhaust pipe mounting hole, a float valve mounting hole and a temperature sensing bag mounting hole, the first positioning plate is provided with a first positioning hole, a second positioning hole and a third positioning hole, the first positioning hole corresponds to the exhaust pipe mounting hole, the second positioning hole corresponds to the float valve mounting hole, and the third positioning hole corresponds to the temperature sensing bag mounting hole.

[0021] The present invention also provides a pot lid assembly, including an inner lid and a heat dissipation device disposed below the inner lid, wherein the heat dissipation device is the aforementioned heat dissipation device.

[0022] Optionally, the inner cover is provided with an air vent, and the pot lid assembly also includes a second positioning plate and a second connecting arm. The second positioning plate is disposed inside the air vent, and the two ends of the second connecting arm are respectively connected to the inner cover and the second positioning plate. The second positioning plate is stacked on top of the first positioning plate.

[0023] The present invention also provides a cooking utensil, comprising: a pot body; and a lid assembly, which is disposed on the pot body, wherein the lid assembly is the aforementioned lid assembly.

[0024] The present invention has the following advantages:

[0025] Using the technical solution of this invention, after cooking, external cold air can be introduced into the heat dissipation chamber through the air inlet. The external cold air exchanges heat with the lid, reducing the temperature of the lid and thus lowering the temperature and pressure inside the cooking chamber, thereby enabling rapid opening of the lid after cooking. The heated air is then discharged through the exhaust port. Therefore, the technical solution of this invention solves the defect of existing electric pressure cookers where the natural cooling time after cooking is too long, resulting in a poor user experience. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the heat dissipation device of the present invention is shown;

[0028] Figure 2 It shows Figure 1 Exploded view of the heat dissipation device;

[0029] Figure 3 It shows Figure 1 A schematic diagram of the heat sink cover of the heat dissipation device in the middle;

[0030] Figure 4 It shows Figure 3 A schematic diagram of the structure of the heat sink from the bottom view;

[0031] Figure 5 It shows Figure 1 A schematic diagram of the structure of the cover of the heat dissipation device;

[0032] Figure 6 It showsFigure 5 An enlarged schematic view at B in FIG. 1;

[0033] Figure 7 An enlarged schematic view at C in FIG. 1 is shown; Figure 5 An enlarged schematic view at D in FIG. 1 is shown;

[0034] Figure 8 An enlarged schematic view at E in FIG. 1 is shown; Figure 5 A sectional view of the cover body is shown;

[0035] Figure 9 A sectional view of the heat dissipation device is shown; Figure 1 A sectional view of the heat dissipation device is shown;

[0036] Figure 10 An enlarged schematic view at F in FIG. 1 is shown; Figure 9 A sectional view of the heat dissipation device is shown;

[0037] Figure 11 A sectional view of the heat dissipation device is shown; Figure 1 A sectional view of the heat dissipation device is shown;

[0038] Figure 12 An enlarged schematic view at G in FIG. 1 is shown; Figure 11 An enlarged schematic view at H in FIG. 1 is shown;

[0039] Figure 13 An enlarged schematic view at I in FIG. 1 is shown; Figure 1 An enlarged schematic view at J in FIG. 1 is shown;

[0040] Figure 14 An enlarged schematic view at K in FIG. 1 is shown; Figure 13 An enlarged schematic view at L in FIG. 1 is shown;

[0041] Figure 15 An enlarged schematic view at M in FIG. 1 is shown; Figure 1 An enlarged schematic view at N in FIG. 1 is shown;

[0042] Figure 16 An enlarged schematic view at O in FIG. 1 is shown; An enlarged schematic view at P in FIG. 1 is shown;

[0043] An enlarged schematic view at Q in FIG. 1 is shown; Figure 17 An enlarged schematic view at R in FIG. 1 is shown; Figure 16 An enlarged schematic view at S in FIG. 1 is shown; An enlarged schematic view at T in FIG. 1 is shown;

[0044] An enlarged schematic view at U in FIG. 1 is shown; Figure 18 An enlarged schematic view at V in FIG. 1 is shown; Figure 17 An enlarged schematic view at W in FIG. 1 is shown;

[0045] Explanation of reference numerals:

[0046] 10, lock cover; 11, exhaust pipe mounting hole; 12, float valve mounting hole; 13, temperature sensing bag mounting hole; 20, first connecting structure; 21, connecting arm; 211, first connecting hole; 22, connecting column; 221, third connecting hole; 23, fifth connecting hole; 30, heat sink; 31, air inlet; 32, avoiding opening; 33, air outlet; 40, heat dissipation cavity; 50, second connecting structure; 51, first connecting column; 511, second connecting hole; 52, second connecting column; 521, fourth connecting hole; 53, clamping head; 54, sixth connecting hole; 60, fin; 70, positioning structure; 71, notch; 80, fastener; 90, first positioning plate; 91, first positioning hole; 92, second positioning hole; 93, third positioning hole; 100, first connecting arm; 200, pot cover assembly; 210, inner cover; 2101, air passage; 2102, second positioning plate; 2103, second connecting arm; 220, arc-shaped sliding groove; 230, exhaust pipe; 240, float valve; 250, temperature sensing bag. DETAILED DESCRIPTION

[0047] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0051] As Figure 1 and Figure 2 shown, the heat dissipation device of the embodiment includes a lock cover 10 and a heat dissipation cover 30. The lock cover 10 is adapted to be rotatably buckled on the pot body. The heat dissipation cover 30 is arranged above the lock cover 10, and a heat dissipation cavity 40 is formed between the lock cover 10 and the heat dissipation cover 30. The heat dissipation cover 30 is provided with an air inlet 31 and an air outlet 33, and external cold air can enter the heat dissipation cavity 40 from the air inlet 31, then cool the lock cover 10 in the heat dissipation cavity 40, and then be discharged from the air outlet 33.

[0052] By using the technical scheme of the embodiment, after cooking is completed, external cold air can be introduced into the heat dissipation cavity through the air inlet 31, and the external cold air exchanges heat with the lock cover 10 and reduces the temperature of the lock cover 10, thereby reducing the temperature and pressure in the cooking cavity, so as to realize rapid opening of the cover after cooking. The heat-exchanged air is discharged from the air outlet 33. Therefore, the technical scheme of the embodiment solves the defect that the natural cooling time of the electric pressure cooker after cooking is long in the prior art, resulting in poor use experience.

[0053] It should be noted that the heat dissipation device in the embodiment is used in an electric pressure cooker, that is, the lock cover 10 is used to cover the pot body.

[0054] As Figure 1 and Figure 2 shown, in the technical scheme of the embodiment, the heat dissipation device further includes fins 60, which are arranged in the heat dissipation cavity 40 and abut against the upper surface of the lock cover 10, thereby being used to exchange heat with the lock cover 10.

[0055] As Figure 1 and Figure 2 shown, in the technical scheme of the embodiment, the heat dissipation device further includes a first connecting structure 20, a second connecting structure 50, and a fastener 80. The first connecting structure 20 is arranged on the lock cover 10, the second connecting structure 50 is arranged on the heat dissipation cover 30, and the first connecting structure 20 and the second connecting structure 50 are correspondingly arranged. The fastener 80 connects the first connecting structure 20 and the second connecting structure 50, thereby fixing the heat dissipation cover 30 on the lock cover 10.

[0056] Of course, in some unshown embodiments, the first connecting structure 20 and the second connecting structure 50 can also be connected in other ways, for example, by clamping connection.

[0057] As Figure 3 and Figure 4As shown, in the technical scheme of the embodiment, the heat dissipation device further comprises a positioning structure 70. The positioning structure 70 is arranged on the lock cover 10 and / or the heat dissipation cover 30, and is adapted to cooperate with the fins 60 and fix the position of the fins 60 in the heat dissipation cavity 40.

[0058] In combination Figure 9 It can be seen that, since the lower end of the fin 60 in the embodiment is in abutment with the upper surface of the lock cover 10, and the upper end of the fin 60 is in abutment with the top wall of the heat dissipation cover 30, the positioning structure 70 described above can be arranged on the upper surface of the lock cover 10, or the positioning structure 70 can be arranged on the top wall of the heat dissipation cover 30, or the positioning structure 70 is arranged on the upper surface of the lock cover 10 or on the top wall of the heat dissipation cover 30.

[0059] In combination Figure 1 And Figure 2 It can be seen that the heat dissipation cover 30 comprises a top wall and an annular side wall, and forms a cover-like structure. The heat dissipation cover 30 is arranged at the upper position of the lock cover 10, and a containing space, i.e. the heat dissipation cavity 40 described above, is formed between the heat dissipation cover 30 and the lock cover 10. The fins 60 are arranged in the heat dissipation cavity 40 and used for heat exchange with the lock cover 10.

[0060] When assembling the heat dissipation cover 30 and the lock cover 10, the first connecting structure 20 on the lock cover 10 and the first connecting structure 20 and the second connecting structure 50 on the heat dissipation cover 30 need to be aligned. Then the fastener 80 is installed on the first connecting structure 20 and the second connecting structure 50, so as to realize the fixation of the heat dissipation cover 30 and the lock cover 10.

[0061] As Figures 3 to 6 shown, in the technical scheme of the embodiment, the first connecting structure 20 comprises a connecting arm 21, and the upper end of the connecting arm 21 is provided with a first connecting hole 211. The second connecting structure 50 comprises a first connecting column 51, and the first connecting column 51 is provided with a second connecting hole 511 penetrating through the heat dissipation cover 30. The first connecting hole 211 and the second connecting hole 511 are correspondingly arranged. The fastener 80 is arranged in the first connecting hole 211 and the second connecting hole 511.

[0062] Specifically, in combination Figure 6 It can be seen that the connecting arm 21 is in a C-shaped structure, and the upper and lower ends thereof are bent. The lower end of the connecting arm 21 is connected with the upper surface of the lock cover 10, and the first connecting hole 211 is arranged on the upper end of the connecting arm 21.

[0063] In combination Figure 9 And Figure 10It can be seen that, after the assembly of the lock cover 10 and the heat dissipation cover 30, the vertical section of the connecting arm 21 is arranged close to the side wall of the heat dissipation cover 30, so that the air duct formed between the fin 60 and the heat dissipation cover 30 is as large as possible, and no additional air resistance is increased.

[0064] Preferably, the lower end bending section of the connecting arm 21 and the lock cover 10 can be connected by welding, or connected by a fastener, or the connecting arm 21 and the lock cover 10 can be connected by one-piece forming.

[0065] In addition, reinforcing ribs are arranged between the vertical section and the bending section of the connecting arm 21, and reinforcing ribs are also arranged on the vertical section of the connecting arm 21, so as to strengthen the overall structure of the connecting arm 21.

[0066] Further, a plurality of connecting arms 21 (specifically two) are arranged in the embodiment, so that part or all of the plurality of connecting arms 21 can adopt the C-shaped structure described above.

[0067] In combination with Figure 3 It can be seen that the first connecting column 51 is arranged on the upper surface of the heat dissipation cover 30. Wherein the "connecting column" refers to that the lid of the pressure cooker includes an inner cover 210, and the heat dissipation device is rotatably arranged below the inner cover 210, and the user rotates the handle to drive the heat dissipation device to rotate, thereby making the cover teeth on the lock cover 10 and the pot teeth on the pot body lock or separate. Further, the inner cover 210 is provided with an arc-shaped sliding groove 220, and the connecting column passes through the arc-shaped sliding groove 220 from bottom to top, thereby enabling the heat dissipation device to be fixed below the inner cover 210, and the connecting column can slide along the arc-shaped sliding groove 220 to enable the lock cover to rotate relative to the inner cover 210.

[0068] In the embodiment, since the heat dissipation cover 30 is arranged above the lock cover 10, the first connecting column 51 is arranged on the upper surface of the heat dissipation cover 30. In combination with Figure 3 and Figure 4 It can be seen that the end surface of the first connecting column 51 is provided with a second connecting hole 511, and the second connecting hole 511 penetrates the heat dissipation cover 30.

[0069] In combination with the above structure, and Figure 9 and Figure 10 As shown, when the lock cover 10 and the heat dissipation cover 30 are assembled, the heat dissipation cover 30 is arranged on the lock cover 10, the upper bending section of the connecting arm 21 is aligned with the first connecting column 51, thereby enabling the first connecting hole 211 and the second connecting hole 511 to be aligned. Then the fastener 80 is sequentially inserted through the second connecting hole 511 and the first connecting hole 211, thereby connecting the lock cover 10 and the heat dissipation cover 30 together.

[0070] As Figures 3 to 5 , Figure 7 , and Figure 11 andFigure 12 As shown, the first connecting structure 20 further includes a connecting post 22, and the second connecting structure 50 further includes a second connecting post 52. A third connecting hole 221 is provided on the connecting post 22, and a fourth connecting hole 521 is provided on the second connecting post 52. The fourth connecting hole 521 passes through the heat sink 30, and the upper end of the connecting post 22 passes through the fourth connecting hole 521. A fastener 80 passes through both the third connecting hole 221 and the fourth connecting hole 521.

[0071] Specifically, the structure of the second connecting post 52 is basically the same as that of the first connecting post 51, except that the fourth connecting hole 521 is a stepped hole. The lower diameter of the fourth connecting hole 521 is larger than its upper diameter, allowing the connecting post 22 to be inserted into the fourth connecting hole 521 from bottom to top. After the connecting post 22 is inserted into the fourth connecting hole 521, the third connecting hole 221 is aligned with the fourth connecting hole 521, and the fastener can be connected to both the third and fourth connecting holes 221.

[0072] like Figures 2 to 5 As shown, in the technical solution of this embodiment, the first connecting structure 20 includes a fifth connecting hole 23 disposed on the side wall of the lock cover 10, and the second connecting structure 50 includes a sixth connecting hole 54 disposed on the side wall of the heat sink 30. The fifth connecting hole 23 and the sixth connecting hole 54 are disposed correspondingly, and the fastener 80 passes through the fifth connecting hole 23 and the sixth connecting hole 54.

[0073] Specifically, the axis of the fifth connecting hole 23 and the axis of the sixth connecting hole 54 are oriented horizontally. Therefore, after the fastener 80 passes through the fifth connecting hole 23 and the sixth connecting hole 54, it can fix the heat sink 30 and the locking cover 10 from the horizontal direction.

[0074] When installing the lock cover 10 and the heat sink 30, place the heat sink 30 over the lock cover 10, then insert the connecting post 22 into the second connecting post 52 to align the connecting arm 21 with the first connecting post 51, and simultaneously align the fifth connecting hole 23 with the sixth connecting hole 54. Finally, install the multiple fasteners 80 to achieve rapid assembly of the lock cover 10 and the heat sink 30.

[0075] Preferably, the fastener 80 is a screw. Specifically, the second connecting hole 511, the fourth connecting hole 521, and the sixth connecting hole 54 are all threaded holes. When installing the lock cover 10 and the heat sink 30, the screw passes through the first connecting hole 211 and is screwed into the second connecting hole 511, the screw passes through the third connecting hole 221 and is screwed into the fourth connecting hole 521, and the screw passes through the fifth connecting hole 23 and is screwed into the sixth connecting hole 54.

[0076] Of course, the fastener 80 can also be selected as other connecting structures, such as a bayonet, a rivet, etc., as long as it can connect the first connecting structure 20 and the second connecting structure 50 together.

[0077] As shown in Figure 3 and Figure 5 In the technical scheme of the embodiment, the first connecting structure 20 is a plurality of first connecting structures 20, the plurality of first connecting structures 20 are arranged along the circumference of the lock cover 10 at intervals, the second connecting structure 50 is a plurality of second connecting structures 50, the plurality of second connecting structures 50 are arranged along the circumference of the heat dissipation cover 30 at intervals, and the plurality of first connecting structures 20 and the plurality of second connecting structures 50 are arranged one by one in correspondence. The plurality of first connecting structures 20 and the plurality of second connecting structures 50 can fix the entire circumference of the lock cover 10 and the heat dissipation cover 30.

[0078] Specifically, in the embodiment, the plurality of first connecting structures 20 includes two connecting arms 21 and one connecting column 22, and correspondingly, the plurality of second connecting structures 50 includes two first connecting columns 51 and one second connecting column 52.

[0079] Of course, those skilled in the art can adjust the number of the first connecting structure 20 and the second connecting structure 50 according to actual work needs. Further, when the first connecting structure 20 is a plurality of first connecting structures 20, the plurality of first connecting structures 20 can only include the connecting arm 21, or only include the connecting column 22, or as in the embodiment, include the connecting arm 21 and the connecting column 22 (the specific number of the connecting arm 21 and the connecting column 22 can be adjusted by those skilled in the art according to actual needs). The number of the first connecting column 51 and the second connecting column 52 in the second connecting structure 50 can be determined according to the number of the connecting arm 21 and the connecting column 22 in the first connecting structure 20.

[0080] In addition, the plurality of first connecting structures 20 also includes a plurality of fifth connecting holes 23, the plurality of second connecting structures 50 also includes a plurality of sixth connecting holes 54, the plurality of fifth connecting holes 23 and the plurality of sixth connecting holes 54 are arranged at intervals along the circumference, and the plurality of fifth connecting holes 23 and the plurality of sixth connecting holes 54 are arranged one by one in correspondence.

[0081] As shown in Figure 4 In the technical scheme of the embodiment, the positioning structure 70 includes a positioning rib, the positioning rib is arranged on the top wall of the heat dissipation cover 30, and the positioning rib cooperates with the end of the fin 60. Specifically, the positioning rib in the embodiment is used to cooperate with the end of the fin 60 away from the center of the lock cover 10, so as to fix the radial position of the fin 60.

[0082] As shown in Figure 13As shown, in this embodiment, there are multiple fins 60 arranged radially along the center of the locking cover 10, and the positioning ribs are annular structures. Specifically, the multiple fins 60 form a circular structure. The diameter of the positioning ribs matches the outer diameter of the circular structure. When the heat sink 30 is fastened onto the locking cover 10, the positioning ribs are engaged on the outer side of the circular structure, thus positioning all the fins 60.

[0083] like Figure 4 and Figure 11 As shown, in the technical solution of this embodiment, an air inlet 31 is provided on the side wall of the heat sink 30, and a notch 71 is provided on the positioning rib, with the notch 71 corresponding to the air inlet 31.

[0084] Specifically, the air inlet 31 is connected to a fan (not shown in the figure) via a pipe. When the fan is working, it blows cold air from outside into the heat dissipation chamber 40, thereby expelling the hot air inside the heat dissipation chamber 40 and reducing the temperature of the fins 60, thus achieving continuous heat exchange between the cover 10 and the fins 60. The annular positioning rib has a notch at the air inlet 31, the width of which matches the width of the air inlet 31. This notch reduces the air resistance of the airflow entering from the air inlet 31, thereby ensuring the heat exchange effect.

[0085] like Figure 13 and Figure 14 As shown, in the technical solution of this embodiment, among the multiple fins 60, the upper end of one fin 60 is connected to the upper end of the fin 60 on one side, and the lower end is connected to the lower end of the fin 60 on the other side, so that the multiple fins 60 form an integral structure. Figure 14 As can be seen, the cross-sections of the multiple fins 60 are wavy, thus forming an integral structure. During assembly, the integral fins 60 can be placed on the locking cover 10, making the assembly process simple.

[0086] In addition, multiple fins 60 can also be connected into a single structure in other ways.

[0087] Of course, in some embodiments not shown, the multiple fins 60 can also be independent of each other, with each fin 60 fixed between the locking cover 10 and the heat sink 30. However, this form would be more complex in structure and assembly compared to this embodiment.

[0088] like Figure 2 , Figure 11 As shown, a relief opening 32 is provided in the middle of the heat sink 30, and an exhaust port 33 is formed between the inner edge of the relief opening 32 and the lock cover 10. Specifically, the relief opening 32 is circular, and the aforementioned plurality of fins 60 form a ring structure, and the inner diameter of the ring structure is adapted to the diameter of the relief opening 32.

[0089] CombinationFigure 9 and Figure 11 As shown, when the heat sink 30 is assembled onto the lock cover 10, the gap between the inner edge of the clearance opening 32 and the lock cover 10 forms an exhaust port 33, and the ends of the plurality of fins 60 facing the center of the lock cover 10 form a grid structure at the exhaust port 33. In conjunction with the above description, the fan can blow external cold air into the heat dissipation chamber 40 from the air inlet 31. The cold air exchanges heat with the fins 60 within the heat dissipation chamber 40, and the heated air is then blown out from the exhaust port 33, thus achieving continuous heat exchange.

[0090] like Figures 3 to 5 As shown, in this embodiment, the heat dissipation device further includes a first positioning plate 90 and a first connecting arm 100. The first positioning plate 90 is disposed within the clearance opening 32, and the two ends of the first connecting arm 100 are respectively connected to the heat dissipation cover 30 and the first positioning plate 90. The lock cover 10 is provided with an exhaust pipe mounting hole 11, a float valve mounting hole 12, and a temperature sensor mounting hole 13. The first positioning plate 90 is provided with a first positioning hole 91, a second positioning hole 92, and a third positioning hole 93. The first positioning hole 91 corresponds to the exhaust pipe mounting hole 11, the second positioning hole 92 corresponds to the float valve mounting hole 12, and the third positioning hole 93 corresponds to the temperature sensor mounting hole 13.

[0091] Combination Figure 15 As can be seen, the exhaust pipe 230 is installed on the exhaust pipe mounting hole 11, the float valve 240 is installed on the float valve mounting hole 12, and the temperature sensor 250 is installed on the temperature sensor mounting hole 13. After the heat sink 30 is placed on the lock cover 10, the exhaust pipe 230 can pass through the exhaust pipe mounting hole 11, the float valve 240 can pass through the float valve mounting hole 12, and the temperature sensor 250 can pass through the temperature sensor mounting hole 13.

[0092] Furthermore, the exhaust pipe mounting hole 11 is located in the middle of the lock cover 10, and the float valve mounting hole 12 and the temperature sensor mounting hole 13 are located on the side of the exhaust pipe mounting hole 11, respectively. During assembly, first install the float valve 240 and the temperature sensor 250 on the lock cover 10, then align the heat sink 30 with the lock cover 10 and install the screws, and finally install the exhaust pipe 230.

[0093] In addition, combined Figure 4 As can be seen, the second positioning hole 92 is larger in size, thus avoiding the up and down movement of the float valve 240.

[0094] Combination Figure 9 and Figure 11 As can be seen, in this embodiment, the first positioning plate 90 is a circular plate with an outer diameter slightly smaller than the inner diameter of the clearance opening 32. Furthermore, the position of the first positioning plate 90 is lower than the clearance opening 32, forming a recessed platform, so that after the heat sink 30 is placed on the lock cover 10, the first positioning plate 90 can abut against the upper surface of the lock cover 10.

[0095] Further, one end of the first connecting arm 100 is connected to the inner edge of the avoiding opening 32, and the other end extends obliquely downward and is connected to the first positioning plate 90. In addition, the first connecting arm 100 is provided with a plurality of (four in this embodiment) first connecting arms 100 which are circumferentially spaced apart.

[0096] As shown in Figure 8 In the technical solution of this embodiment, the lock cover is a lock cover of a cooking utensil. Specifically, the lock cover 10 is a lock cover of an electric pressure cooker, and the lower edge of the lock cover 10 is provided with cover teeth. Preferably, the top surface of the lock cover is an inclined surface with an inclination angle of 0° to 5°, which is beneficial to reduce the strain of the lock cover after being pressed

[0097] This embodiment also provides a pot cover assembly 200, which comprises an inner cover 210 and the heat dissipation device described above, and the heat dissipation device is arranged below the inner cover 210. The lock cover 10 of the heat dissipation device is a lock cover, and the lock cover is provided with cover teeth, and the pot body is provided with pot teeth. The user can rotate the handle on the pot cover to drive the lock cover and the heat dissipation cover 30 to rotate synchronously, so as to make the cover teeth and the pot teeth interlock or separate from each other.

[0098] As can be seen from Figure 10 , Figure 12 and 16 , the inner cover 210 is provided with an arc-shaped sliding groove 220, and the upper ends of the first connecting column 51 and the second connecting column 52 are both provided with a clamping head 53. One end of the arc-shaped sliding groove 220 is provided with a circular mounting hole with a larger diameter. Taking the first connecting column 51 as an example, during installation, the clamping head of the first connecting column 51 passes through the circular mounting hole, and then the first connecting column 51 slides along the arc-shaped sliding groove 220. Since the width of the arc-shaped sliding groove 220 is smaller than the diameter of the circular mounting hole, the clamping head 53 is clamped at the upper end of the arc-shaped sliding groove 220, thereby preventing the heat dissipation cover 30 and the lock cover 10 from falling downward. When the first connecting column 51 and the second connecting column 52 slide along the arc-shaped sliding groove 220, the heat dissipation cover 30 and the lock cover 10 can be rotated as a whole relative to the inner cover 210.

[0099] In addition, in order to facilitate assembly, the cross-sectional outer contour of the first connecting column 51 and the second connecting column 52 is in a waist-shaped structure. The waist-shaped structure refers to a structure in which the middle part is long and narrow, and the edges are semicircular.

[0100] In addition, the upper surface of the arc-shaped sliding groove 220 is further provided with a surrounding rib, which is used to support the lower end surface of the connecting head of the first connecting column 51 and the second connecting column 52.

[0101] In combination with Figure 17 and Figure 18It can be seen that the inner cover 210 is provided with an air vent 2101. The pot cover assembly further comprises a second positioning plate 2102 and a second connecting arm 2103, the second positioning plate 2102 is arranged in the air vent 2101, and the two ends of the second connecting arm 2103 are respectively connected with the inner cover 210 and the second positioning plate 2102, and the second positioning plate 2102 is arranged in stack with the first positioning plate 90.

[0102] Specifically, the size of the air vent 2101 is matched with the above-mentioned avoiding hole 32. The hot air discharged from the air outlet 33 can be discharged to the outside from the air vent 2101. The height of the second positioning plate 2102 is slightly lower than the air vent 2101, thereby forming a sunken platform. In the embodiment, four second connecting arms 2103 are arranged, and the four second connecting arms 2103 are arranged one by one corresponding to the four first connecting arms 100.

[0103] In addition, from the air vent 2101, the hot air discharged from the air outlet 33 can be discharged to the outside. Figure 18 It can also be seen that the second positioning plate 2102 is provided with three avoiding holes, which respectively avoid the above-mentioned air pipe 230, float valve 240 and temperature sensing bag 250.

[0104] The embodiment also provides a cooking utensil, which comprises a pot body (not shown in the figure) and a pot cover assembly 200. The pot cover assembly 200 is arranged on the pot body, and the pot cover assembly 200 comprises the above-mentioned heat dissipation device.

[0105] Preferably, the cooking utensil is an electric pressure cooker.

[0106] Obviously, the above-mentioned embodiment is only an example for clearly illustrating, but not a limitation to the implementation mode. For those skilled in the art, on the basis of the above-mentioned description, other different forms of changes or variations can also be made. Here, it is not necessary and also impossible to enumerate all the implementation modes. The changes or variations derived from them are still within the protection scope of the present application.

Claims

1. A lid assembly comprising: The utility model relates to a cooking utensil, including: Inner cover (210) and the heat dissipation device of setting below the inner cover (210), be provided with arc chute (220) on the inner cover (210), The heat dissipation device includes: Lock cover (10) is suitable for rotating buckle to the pot body, Heat dissipation cover (30) is covered in the upper of lock cover (10), and the heat dissipation cavity (40) is surrounded between lock cover (10) and heat dissipation cover (30), Wherein, the heat dissipation cover (30) is provided with air inlet (31) and exhaust (33), The first connecting structure (20) is set up on the lock cover (10), and the second connecting structure (50) is set up on the heat dissipation cover (30), the first connecting structure (20) and the second connecting structure (50) are correspondingly set up and are connected to make the heat dissipation cover (30) and the lock cover (10) are connected, The second connecting structure (50) includes first connecting column (51) and second connecting column (52), the upper end of first connecting column (51) and second connecting column (52) is provided with the clamp (53), the clamp (53) is clamped in the upper end of arc chute (220), when first connecting column (51) and second connecting column (52) along arc chute (220) slide, the heat dissipation cover (30) and the lock cover (10) can be made to rotate as a whole relative to the inner cover (210), and then the cover tooth on the lock cover (10) and the pot tooth on the pot body are locked or separated, The first connecting structure (20) includes connecting arm (21), and the connecting arm (21) is C-shaped structure, and the lower end bending section of connecting arm (21) is connected with the upper surface of lock cover (10), and the upper end of connecting arm (21) is provided with first connecting hole (211), and the second connecting hole (511) is provided on the first connecting column (51), and the second connecting hole (511) penetrates the heat dissipation cover (30), and the first connecting hole (211) and the second connecting hole (511) are correspondingly set up, and the fastener (80) is arranged in the first connecting hole (211) and the second connecting hole (511), and the middle part of connecting arm (21) is close to the inner side wall of heat dissipation cover (30).

2. The lid assembly of claim 1, wherein The connecting arm (21) is a plurality of, and the both ends of at least part of the connecting arm (21) of the plurality of connecting arm (21) have bending sections.

3. The lid assembly of claim 1, wherein The first connecting structure (20) includes connecting column (22), and the third connecting hole (221) is provided on the connecting column (22), and the fourth connecting hole (521) is provided on the second connecting column (52), and the fourth connecting hole (521) penetrates the heat dissipation cover (30), and the upper end of connecting column (22) is arranged in the fourth connecting hole (521), and the fastener (80) is arranged in the third connecting hole (221) and the fourth connecting hole (521).

4. The lid assembly of claim 3, wherein The upper end of the first connecting column (51) and the second connecting column (52) is provided with a clamping head (53), and the cross-sectional outer contour of the first connecting column (51) and the second connecting column (52) is a waist-shaped structure.

5. The lid assembly of claim 1, wherein The first connecting structure (20) includes a fifth connecting hole (23) provided on the side wall of the lock cover (10), the second connecting structure (50) includes a sixth connecting hole (54) provided on the side wall of the heat dissipation cover (30), the fifth connecting hole (23) and the sixth connecting hole (54) are correspondingly arranged, and the fastener (80) is arranged in the fifth connecting hole (23) and the sixth connecting hole (54).

6. The lid assembly of any one of claims 1 to 5, wherein, The first connecting structure (20) is a plurality of first connecting structures (20) which are arranged at intervals along the circumference of the lock cover (10), and the second connecting structure (50) is a plurality of second connecting structures (50) which are arranged at intervals along the circumference of the heat dissipation cover (30), and the plurality of first connecting structures (20) and the plurality of second connecting structures (50) are arranged one by one.

7. The lid assembly of claim 1, wherein The heat dissipation device further comprises fins (60) and a positioning structure (70), the fins (60) are arranged in the heat dissipation cavity (40), and the positioning structure (70) is arranged on the lock cover (10) and / or the heat dissipation cover (30), the positioning structure (70) is adapted to cooperate with the fins (60) and fix the position of the fins (60) in the heat dissipation cavity (40).

8. The lid assembly of claim 7, wherein, The positioning structure (70) comprises a positioning protrusion, the positioning protrusion is arranged on the top wall of the heat dissipation cover (30), and the positioning protrusion cooperates with the end of the fin (60).

9. The lid assembly of claim 8, wherein, The fins (60) are a plurality of fins (60) which are arranged radially along the middle part of the lock cover (10), and the positioning protrusion is an annular structure.

10. The lid assembly of claim 9, wherein, The side wall of the heat dissipation cover (30) is provided with the air inlet (31), and the positioning protrusion is provided with a notch (71), and the notch (71) is arranged correspondingly with the air inlet (31).

11. The lid assembly of claim 7, wherein, Among the plurality of fins (60), the upper end of one fin (60) is connected with the upper end of the fin (60) on one side thereof, and the lower end is connected with the lower end of the fin (60) on the other side thereof, so that the plurality of fins (60) form an integral structure.

12. The lid assembly of claim 1, wherein, The middle part of the heat dissipation cover (30) is provided with an avoiding opening (32), and the inner edge of the avoiding opening (32) and the lock cover (10) form the air outlet (33).

13. The lid assembly of claim 12, wherein, The heat dissipation device further comprises a first positioning plate (90) and a first connecting arm (100), the first positioning plate (90) is arranged in the avoiding opening (32), and the two ends of the first connecting arm (100) are connected with the heat dissipation cover (30) and the first positioning plate (90) respectively.

14. The lid assembly of claim 13, wherein, The lock cover (10) is provided with an exhaust pipe mounting hole (11), a float valve mounting hole (12) and a temperature sensing bag mounting hole (13), the first positioning plate (90) is provided with a first positioning hole (91), a second positioning hole (92) and a third positioning hole (93), the first positioning hole (91) corresponds to the exhaust pipe mounting hole (11), the second positioning hole (92) corresponds to the float valve mounting hole (12), and the third positioning hole (93) corresponds to the temperature sensing bag mounting hole (13).

15. The lid assembly of claim 13 or 14, wherein, The inner cover (210) is provided with an air passing port (2101), the pot cover assembly further comprises a second positioning plate (2102) and a second connecting arm (2103), the second positioning plate (2102) is arranged in the air passing port (2101), and the two ends of the second connecting arm (2103) are connected with the inner cover (210) and the second positioning plate (2102) respectively, and the second positioning plate (2102) is arranged in stack with the first positioning plate (90).

16. A cooking appliance characterized by, Comprise: A pot body; A pot cover assembly (200) is arranged on the pot body, and the pot cover assembly (200) is the pot cover assembly according to any one of claims 1 to 15.

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