Pressure Cooking Appliances

Abstract

The present invention provides a pressure cooking device, comprising: a pot body; a pot cover, having a locking position locked to the pot body and an unlocking position that can be opened from the pot body, and an exhaust passage is arranged on the pot cover; a cover opening member, driving the pot cover to switch between the locking position and the unlocking position; a pressure limiting valve, capable of cooperating with the exhaust passage; a lever structure, comprising a lever body pivotably arranged through a pivot and a matching structure connected to the side edge of the lever body, the first end of the lever body and the matching structure are located on the same side of the pivot, and when the cover opening member switches from the locking position to the unlocking position, the cover opening member can push the matching structure upward so that the first end of the lever body pushes against the pressure limiting valve so that the pressure limiting valve is away from the exhaust passage; a heating device, for heating the food in the pot body. The application of the technical solution of the present invention can effectively solve the problem of high production cost of pressure cooking devices in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of small household appliances, and in particular to a pressure cooking device. Background Art

[0002] When a pressure cooking appliance is cooking, the pressure in its cooking chamber is relatively high. When cooking is finished, if the user does not completely release the pressure in the pot and forcibly opens the lid, the cooking chamber has some steam pressure, which can easily scald the user after opening the lid, causing personal injury. In order to avoid the above situation, a manual exhaust button or solenoid valve is usually set in the pressure cooking appliance to push the pressure limiting valve of the pressure cooking appliance to exhaust and release pressure before the lid can be opened to reduce the risk of scalding the user. Although the above structure can reduce the risk of scalding the user, it has low reliability and high production cost. Summary of the invention

[0003] The main purpose of the present invention is to provide a pressure cooking device to solve the problem of high production cost of pressure cooking devices in the prior art.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a pressure cooking device, comprising: a pot body; a pot cover, having a locking position locked to the pot body and an unlocking position that can be opened from the pot body, and an exhaust passage is arranged on the pot cover; a cover opening member, driving the pot cover to switch between the locking position and the unlocking position; a pressure limiting valve, capable of cooperating with the exhaust passage; a lever structure, comprising a lever body pivotally arranged through a pivot and a matching structure connected to the side edge of the lever body, the first end of the lever body and the matching structure are located on the same side of the pivot, and when the cover opening member is switched from the locking position to the unlocking position, the cover opening member can push the matching structure upward so that the first end of the lever body pushes against the pressure limiting valve so that the pressure limiting valve is away from the exhaust passage; and a heating device, for heating the food in the pot body.

[0005] Furthermore, the matching structure includes a base connected to the lever body and a protrusion arranged on one side of the base close to the pivot, and the lower surface of at least part of the protrusion is lower than the lower surface of the base and can be abutted and matched with the cover opening member.

[0006] Furthermore, the base and the protruding portion are integrally formed.

[0007] Furthermore, the lower surface of the protruding portion includes an arc surface protruding downward.

[0008] Furthermore, the lever body is a first plate body, the matching structure is a second plate body connected to the side edge of the first plate body, and the side edge of the second plate body close to the pivot is bent and curled to form a protrusion.

[0009] Furthermore, the lever body and the matching structure are an integrally formed structure.

[0010] Furthermore, the lever structure is made of metal material.

[0011] Furthermore, the cover opening member includes a pivotally arranged handle seat and a handle fixed to the handle seat, and part of the handle seat is located below the matching structure. When the cover opening member is switched from the locked position to the unlocked position, the handle seat can push upward against the matching structure.

[0012] Furthermore, the handle seat includes a seat body and a rotating block arranged on the side wall of the seat body. The end face of the rotating block is a guiding slope. There is an obtuse angle between the guiding slope and the upper surface of the rotating block. The matching structure can match with the upper surface of the rotating block under the guidance of the guiding slope.

[0013] Furthermore, a recessed structure is provided on the upper surface of the rotating block at a position close to the seat body.

[0014] Furthermore, the cooking appliance further comprises: an exhaust button, which is opposite to the second end of the lever body and is located above the second end of the lever body.

[0015] Furthermore, the pot lid includes a surface cover, an inner lining and an inner cover which are arranged in sequence from the outside to the inside. The inner cover is provided with cover teeth, and the pot body is provided with pot teeth that cooperate with the cover teeth. When the pot teeth and the cover teeth are engaged, the pot lid is in a locked position, and when the pot teeth and the cover teeth are separated, the pot lid is in an unlocked position. The cover opening piece and the lever structure are pivotally arranged on the inner lining.

[0016] Furthermore, the face cover is provided with a receiving recess for accommodating the pressure limiting valve, the side wall of the receiving recess is provided with an avoidance opening, a sealing member is provided at the avoidance opening, and a mounting hole is provided on the sealing member. The first end of the lever body can extend into the receiving recess through the mounting hole and abut against the pressure limiting valve, and the hole wall of the mounting hole and the lever body are in interference fit.

[0017] By applying the technical solution of the present invention, when the cover opening member switches from the locked position to the unlocked position, the cover opening member can push the matching structure upward so that the first end of the lever body pushes against the pressure limiting valve so that the pressure limiting valve is away from the exhaust channel. The above structure allows the user to push against the pressure limiting valve to exhaust and release pressure during the cover opening process, thereby preventing the steam in the pot from scalding the user. In addition, since the pressure limiting valve does not need to be pushed by the electromagnetic valve or manually, but cooperates with the cover opening member, the above structure increases reliability on the one hand and reduces production costs on the other. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1A schematic diagram showing the exploded structure of a pot cover according to an embodiment of a pressure cooking device of the present invention is shown;

[0020] Figure 2 Shows Figure 1 A schematic top view of the inner lining of the pot cover when the raised portion cooperates with the guide inclined surface;

[0021] Figure 3 Shows Figure 2 A schematic diagram of the three-dimensional structure of the lining;

[0022] Figure 4 Shows Figure 3 A schematic diagram of the enlarged structure of the lining at A;

[0023] Figure 5 Shows Figure 1 A schematic top view of the inner lining of the pot cover when the raised portion cooperates with the upper surface of the rotating block;

[0024] Figure 6 Shows Figure 5 A schematic diagram of the three-dimensional structure of the lining;

[0025] Figure 7 Shows Figure 6 A schematic diagram of the enlarged structure of the lining at B;

[0026] Figure 8 Shows Figure 1 A three-dimensional structural diagram of a lever structure of a pressure cooking device;

[0027] Fig. 9 Shows Figure 1 A schematic diagram of the three-dimensional structure of a handle base of a pressure cooking device;

[0028] Fig.10 Shows Figure 1 A schematic cross-sectional view of a pot lid; and

[0029] Fig.11 Shows Fig.10 Schematic diagram of the enlarged structure at C of the pot cover.

[0030] The above drawings include the following reference numerals:

[0031] 1. Exhaust channel; 10. Pot cover; 11. Noodle cover; 111. Accommodating recess; 12. Lining; 13. Inner cover; 131. Covering teeth; 20. Opening member; 21. Handle seat; 211. Seat body; 212. Rotating block; 213. Guide slope; 214. Recessed structure; 22. Handle; 30. Pressure-limiting valve; 40. Lever structure; 41. Lever body; 411. First end; 412. Second end; 42. Matching structure; 421. Base; 422. Protrusion; 423. Arc surface; 50. Pivot; 60. Exhaust button; 70. Sealing member. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] like Figures 1 to 11 As shown, the pressure cooking device of this embodiment includes: a pot body, a pot cover 10, a cover opening member 20, a pressure limiting valve 30, a lever structure 40 and a heating device. The pot cover 10 has a locking position locked to the pot body and an unlocking position that can be opened from the pot body, and the pot cover 10 is provided with an exhaust passage 1. The cover opening member 20 drives the pot cover 10 to switch between the locking position and the unlocking position. The pressure limiting valve 30 can cooperate with the exhaust passage 1. The lever structure 40 includes a lever body 41 pivotally arranged through a pivot 50 and a matching structure 42 connected to the side edge of the lever body 41, the first end 411 of the lever body 41 and the matching structure 42 are located on the same side of the pivot 50, and when the cover opening member 20 switches from the locking position to the unlocking position, the cover opening member 20 can push the matching structure 42 upward so that the first end 411 of the lever body 41 pushes against the pressure limiting valve 30 so that the pressure limiting valve 30 is away from the exhaust passage 1. The heating device is used to heat the food in the pot body.

[0034] By applying the technical solution of this embodiment, when the cover opening member 20 is switched from the locked position to the unlocked position, the cover opening member 20 can push the matching structure 42 upward to make the first end 411 of the lever body 41 push the pressure limiting valve 30 to keep the pressure limiting valve 30 away from the exhaust channel 1. The above structure allows the user to push the pressure limiting valve 30 to exhaust and release pressure during the cover opening process, thereby preventing the steam in the pot from scalding the user. In addition, since the pressure limiting valve does not need to be pushed by the electromagnetic valve or manually, but cooperates with the cover opening member, the above structure increases reliability on the one hand and reduces production costs on the other.

[0035] It should be noted that, in this embodiment, the heating device is a heating plate or an IH heating plate, the pot body includes an outer shell, a heat preservation cover and an inner pot arranged in sequence from the outside to the inside, the inner pot has a cooking cavity, and the heating device is arranged between the inner pot and the outer shell to heat the food in the cooking cavity.

[0036] The inventor has found in his long-term research that even if the pressure limiting valve is pushed against during the lid opening process, there may still be a certain amount of pressure in the pot when the lid is in the unlocked position. In order to solve the above problem, the inventor has found that the pressure limiting valve can be pushed against in advance to increase the pressure release time and release the pressure in the pot as much as possible. In order to achieve the purpose of pushing against the pressure limiting valve as early as possible, Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, the matching structure 42 includes a base 421 connected to the lever body 41 and a protrusion 422 disposed on the side of the base 421 close to the pivot 50, and at least a part of the lower surface of the protrusion 422 is lower than the lower surface of the base 421, and can be abutted and matched with the cover opening member 20. The above structure makes it possible for the protrusion 422 to be closer to the cover opening member matched with it relative to the base 421 in the rotation direction of the cover opening member 20, so that the cover opening member only needs to rotate a small angle to push the protrusion 422 upward, and finally the first end 411 of the lever body 41 pushes the pressure limiting valve 30 upward to achieve exhaust.

[0037] like Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, the base 421 and the protrusion 422 are integrally formed. The above structure is simple, easy to process, high in production efficiency, and low in production cost.

[0038] like Figure 8 As shown, in this embodiment, the lower surface of the protrusion 422 includes a circular arc surface 423 protruding downward. The above structure allows the lower surface of the protrusion 422 to smoothly contact with the cover opening member 20, and there will be no interference or opening and closing problems caused by burrs. In addition, the above structure can minimize the wear of the cover opening member 20 and increase the service life of the cover opening member 20.

[0039] like Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, the lever body 41 is a first plate, the matching structure 42 is a second plate connected to the side edge of the first plate, and the side edge of the second plate close to the pivot 50 is bent and curled to form a protrusion 422. The above structure is simple, easy to process, and has low production cost.

[0040] like Figure 8 As shown, in this embodiment, the lever body 41 and the matching structure 42 are an integrally formed structure. The above structure is simple, easy to process, and has low production cost.

[0041] In this embodiment, the lever structure 40 is made of metal material. The above structure makes it difficult for the lever structure 40 to deform even in a high temperature and high humidity environment, thereby improving reliability. Preferably, in this embodiment, a reinforcement structure is provided on the lever structure 40 to further prevent the lever structure 40 from deforming.

[0042] like Figures 1 to 7 , Fig. 9 and Fig.10 As shown, in this embodiment, the cover opening member 20 includes a pivotally arranged handle seat 21 and a handle 22 fixed to the handle seat 21. Part of the handle seat 21 is located below the matching structure 42. When the cover opening member 20 is switched from the locked position to the unlocked position, the handle seat 21 can push upward against the matching structure 42.

[0043] like Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, the handle seat 21 includes a seat body 211 and a rotating block 212 disposed on the side wall of the seat body 211. The end surface of the rotating block 212 is a guiding slope 213. The guiding slope 213 and the upper surface of the rotating block 212 form an obtuse angle. The matching structure 42 can match with the upper surface of the rotating block 212 under the guidance of the guiding slope 213. Specifically, when the user performs the cover opening operation and the rotating block 212 rotates to a predetermined position, the guiding slope 213 moves to contact with the protrusion 422. Since the guiding slope 213 is inclined upward, when the rotating block 212 rotates forward again, the protrusion 422 will tilt upward along the guiding slope 213 ( Figure 3 , Figure 4 When the protrusion 422 abuts against the upper surface of the rotating block 212, the lever structure 40 reaches the maximum tilting distance position, at which time the pressure limiting valve 30 can be completely tilted ( Figure 6 and Figure 7 The pressure in the pot can be quickly released.

[0044] like Fig. 9 As shown, in this embodiment, a concave structure 214 is provided on the upper surface of the rotating block 212 near the seat body 211. The above structure can reduce the contact area between the rotating block 212 and the protrusion 422, reduce friction, and improve the smoothness of opening the cover.

[0045] like Figure 1 , Fig.10 and Fig.11As shown, in this embodiment, the cooking appliance further includes an exhaust button 60, which is opposite to the second end 412 of the lever body 41 and is located above the second end 412 of the lever body 41. When manual exhaust is required, the exhaust button 60 can be pressed, and the exhaust button 60 applies downward pressure to the second end 412 of the lever body 41, so that the first end 411 of the lever body 41 can be tilted upward to abut against the pressure limiting valve 30.

[0046] It should be noted that, with the structure of this embodiment, the position setting between the exhaust button 60 and the handle 22 is relatively flexible and can be arranged according to actual conditions.

[0047] like Fig.10 As shown, in this embodiment, the pot cover 10 includes a surface cover 11, an inner lining 12 and an inner cover 13 which are arranged in sequence from the outside to the inside. The inner cover 13 is provided with a cover tooth 131, and the pot body is provided with a pot tooth that cooperates with the cover tooth 131. When the pot tooth and the cover tooth 131 are engaged with each other, the pot cover 10 is in a locked position. When the pot tooth and the cover tooth 131 are separated, the pot cover 10 is in an unlocked position, and the cover opening member 20 and the lever structure 40 are pivotally arranged on the inner lining 12.

[0048] like Fig.10 and Fig.11 As shown, in this embodiment, the cover 11 is provided with a receiving recess 111 for accommodating the pressure limiting valve 30, and a sidewall of the receiving recess 111 is provided with an escape port, and a sealing member 70 is provided at the escape port. The sealing member 70 is provided with a mounting hole, and the first end 411 of the lever body 41 can extend into the receiving recess 111 through the mounting hole and abut against the pressure limiting valve 30, and the hole wall of the mounting hole and the lever body 41 are interference fit. The above structure can increase the sealing performance, and prevent steam from entering between the cover and the liner, thereby affecting the service life of the liner. In addition, when the pot cover is closed, the rotating block 212 returns to the initial position, and the protrusion 422 is separated from the rotating block 212. The protrusion 422 can return to the initial position under the action of the elastic restoring force of the sealing member 70, and will not lift the pressure limiting valve 30. In the above structure, the sealing member 70 plays both a sealing role and a role of a reset device, and one component has multiple uses, thereby reducing the production cost.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure cooking device, characterized in that: include: Pot body; A pot cover (10) having a locking position locked to the pot body and an unlocking position capable of being opened from the pot body, wherein the pot cover (10) is provided with an exhaust passage (1); A cover opening member (20) for driving the pot cover (10) to switch between the locking position and the unlocking position; A pressure limiting valve (30) capable of cooperating with the exhaust passage (1); The lever structure (40) comprises a lever body (41) pivotally arranged via a pivot (50) and a matching structure (42) connected to a side edge of the lever body (41); the first end (411) of the lever body (41) and the matching structure (42) are located on the same side of the pivot (50); when the cover opening member (20) is switched from the locking position to the unlocking position, the cover opening member (20) can press upward against the matching structure (42) so that the first end (411) of the lever body (41) presses against the pressure limiting valve (30) so that the pressure limiting valve (30) is away from the exhaust passage (1); A heating device, used for heating the food in the pot; The cover opening member (20) comprises a handle seat (21) which is pivotally arranged and a handle (22) fixed to the handle seat (21); a portion of the handle seat (21) is located below the matching structure (42); when the cover opening member (20) is switched from the locking position to the unlocking position, the handle seat (21) can press upward against the matching structure (42); The handle seat (21) comprises a seat body (211) and a rotating block (212) arranged on a side wall of the seat body (211); the end surface of the rotating block (212) is a guiding inclined surface (213); an obtuse angle is formed between the guiding inclined surface (213) and the upper surface of the rotating block (212); and the matching structure (42) can match with the upper surface of the rotating block (212) under the guidance of the guiding inclined surface (213); A recessed structure (214) is provided on the upper surface of the rotating block (212) at a position close to the seat body (211).

2. The pressure cooking device according to claim 1, characterized in that: The matching structure (42) includes a base (421) connected to the lever body (41) and a protrusion (422) arranged on the side of the base (421) close to the pivot (50), and at least a part of the lower surface of the protrusion (422) is lower than the lower surface of the base (421) and can be abutted and matched with the cover opening member (20).

3. The pressure cooking device according to claim 2, characterized in that: The base (421) and the protruding portion (422) are integrally formed.

4. The pressure cooking device according to claim 2, characterized in that: The lower surface of the protruding portion (422) includes an arc surface (423) protruding downward.

5. The pressure cooking device according to claim 2, characterized in that: The lever body (41) is a first plate body, the matching structure (42) is a second plate body connected to the side edge of the first plate body, and the side edge of the second plate body close to the pivot (50) is bent and curled to form the protrusion (422).

6. The pressure cooking device according to claim 1, characterized in that: The lever body (41) and the matching structure (42) are an integrally formed structure.

7. The pressure cooking device according to claim 1, characterized in that: The lever structure (40) is made of metal material.

8. The pressure cooking device according to claim 1, characterized in that The cooking appliance further comprises: The exhaust button (60) is opposite to the second end (412) of the lever body (41) and is located above the second end (412) of the lever body (41).

9. The pressure cooking device according to claim 1, characterized in that: The pot cover (10) comprises a surface cover (11), an inner lining (12) and an inner cover (13) which are arranged in sequence from the outside to the inside; the inner cover (13) is provided with a cover tooth (131); the pot body is provided with a pot tooth matched with the cover tooth (131); when the pot tooth is engaged with the cover tooth (131), the pot cover (10) is in the locked position; when the pot tooth is separated from the cover tooth (131), the pot cover (10) is in the unlocked position; the cover opening member (20) and the lever structure (40) are pivotally arranged on the inner lining (12).

10. The pressure cooking device according to claim 9, characterized in that The face cover (11) is provided with a receiving recess (111) for receiving the pressure limiting valve (30), a side wall of the receiving recess (111) is provided with an escape opening, a sealing member (70) is provided at the escape opening, and a mounting hole is provided on the sealing member (70), the first end (411) of the lever body (41) can extend into the receiving recess (111) through the mounting hole and abut against the pressure limiting valve (30), and the hole wall of the mounting hole and the lever body (41) are in interference fit.

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