Food preparation utensils

Abstract

A food preparation device comprises: a pot body; a pot lid disposed on the pot body, the pot lid comprising a top cover, an inner lining, and an inner cover disposed in sequence; a sealing portion disposed on the pot lid, a sealed cavity disposed within the sealing portion, and an air extraction port communicating the sealed cavity with the interior of the pot body; a first float movably disposed within the air extraction port, the first float having an open position communicating the sealed cavity with the interior of the pot body and a sealed position disconnecting the sealed cavity from the interior of the pot body; when the pressure within the pot body reaches a predetermined value, the first float moves from the open position to the sealed position; when the pressure within the pot body does not reach the predetermined value, the first float returns from the sealed position to the open position under the action of gravity or a reset mechanism; and an air extraction device disposed within the pot lid, the air intake port of the air extraction device being connected to the sealed cavity. The technical solution of the present invention can effectively solve the problem of the inability of existing food preparation devices to effectively open and close the air extraction port.

Description

Technical Field

[0001] The present invention relates to small household appliances, and in particular to a food preparation utensil. Background Art

[0002] Electric pressure cookers and rice cookers have become common household kitchen appliances. Both these appliances offer both a timer and a keep-warm function. In the summer, when temperatures are high, prolonged use of the timer or keep-warm function can cause foods like rice and broth to soak and spoil, resulting in a poor user experience. Currently, freshness preservation methods such as vacuuming and freezing are commonly used. Among small appliances, negative pressure preservation is the most convenient and effective solution. However, there is currently no effective mechanism for opening and closing the vacuum port on electric pressure cookers. Summary of the Invention

[0003] The main purpose of the present invention is to provide a food preparation device to solve the problem that the food preparation device in the prior art cannot effectively open and close the air extraction port.

[0004] To achieve the above-mentioned object, the present invention provides a food preparation utensil, comprising: a pot body, the pot body being used to hold food to be cooked; a heating device, heating the food in the pot body; a pot cover, the pot cover being provided on the pot body, the pot cover comprising a surface cover, an inner lining and an inner cover arranged in sequence from top to bottom, the pot cover being provided with a sealing portion, a sealing cavity being provided in the sealing portion, and the inner cover being provided with an air extraction port connecting the sealed cavity with the interior of the pot body; a first float movably provided in the air extraction port, the first float having an open position connecting the sealed cavity with the interior of the pot body, and a sealed position disconnecting the sealed cavity from the interior of the pot body, the first float having an initial position being the open position, when the pressure in the pot body reaches a predetermined value, the first float moving from the open position to the sealed position, when the pressure in the pot body does not reach the predetermined value, the first float returning from the sealed position to the open position under the action of gravity or a reset mechanism; and an air extraction device, provided in the pot cover, the air intake port of the air extraction device being connected to the sealed cavity.

[0005] Utilizing the technical solution of the present invention, a food preparation device includes a first float movably disposed within an air extraction port, the first float having an open position and a sealed position. When the pressure within the pot reaches a predetermined value, the first float moves from the open position to the sealed position. When the pressure within the pot does not reach the predetermined value, the first float returns from the sealed position to the open position under the action of gravity or a reset mechanism. This structure not only enables the air extraction port to be opened and closed, but also addresses the problem of prior art food preparation devices being unable to effectively open and close the air extraction port. Furthermore, this structure is simple and easy to assemble, improving production efficiency and reducing production costs.

[0006] Furthermore, the inner liner is provided with a first mounting opening, and the sealing portion includes a sealing cover provided at the first mounting opening and a sealing ring provided between the first mounting opening and the inner cover. The sealing cover, the sealing ring, and the inner cover together form a sealed cavity, and the sealing cover is provided with a through hole communicating with the air intake port. This structure prevents air leakage and ensures air extraction efficiency.

[0007] Furthermore, a flow passage is provided on the first float. When the first float is in the open position, the sealed cavity communicates with the interior of the pot body through the flow passage. When the first float is in the sealed position, the flow passage is blocked by the inner wall of the air extraction port. The above structure is simple and easy to implement.

[0008] Furthermore, the flow passage is a flow hole, one end of which is arranged on the side wall of the first float, and the other end of which is arranged on the top of the first float. The above structure ensures that the flow hole will not be blocked when the first float is in the open position.

[0009] Furthermore, a sealing structure is provided at the bottom end of the first float. When the first float is in the sealed position, the sealing structure abuts against the bottom surface of the inner cover to seal the gap between the first float and the air extraction port. This structure can prevent gas from leaking out of the gap during the upward pressure process.

[0010] Furthermore, the food preparation device further comprises a second float, and the inner cover is further provided with a second mounting opening, wherein the second float is movably disposed in the second mounting opening. The above structure prevents the user from opening the cover when the pot body is in the upward pressure state.

[0011] Furthermore, the first end and the second end of the second float are respectively arranged on both sides of the inner cover, the second end of the second float is located in the pot body, and a first sealing structure is provided on the first end of the second float. The second float has an upper end position and a lower end position. When the second float is located at the lower end position, the first sealing structure seals the gap between the second float and the second mounting port.

[0012] Furthermore, a second sealing structure is provided on the second end of the second float. When the second float is located at the upper end position, the second sealing structure seals the gap between the second float and the second installation opening.

[0013] Furthermore, the pot body includes a pot body, a heat-insulating cover and an inner pot which are arranged in sequence from the outside to the inside, and the sealed cavity is connected to the inner pot through an exhaust port.

[0014] Furthermore, the pot body and the pot cover are pivotally connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 shows a schematic diagram of the front structure of an embodiment of a food preparation utensil according to the present invention;

[0017] Figure 2 Shown Figure 1 A schematic diagram of a longitudinal cross-section of a food preparation utensil;

[0018] Figure 3 Shown Figure 1 a schematic diagram of the three-dimensional structure of a food preparation utensil;

[0019] Figure 4 Shown Figure 1 A schematic longitudinal cross-sectional view of the inner lining, inner lid and inner pot of a food preparation utensil;

[0020] Figure 5 Shown Figure 1 An enlarged structural diagram of a food preparation utensil at point A;

[0021] Figure 6 Shown Figure 1 a schematic diagram of the three-dimensional structure of the lining of the food preparation utensil; and

[0022] Figure 7 Shown Figure 1 a schematic diagram of the three-dimensional structure of the inner cover of the food preparation utensil;

[0023] Figure 8 Shown Figure 1 Schematic diagram of the main structure of the second float of the food preparation appliance.

[0024] The above drawings include the following reference numerals:

[0025] 10. Pot body; 11. Pot body; 12. Insulation cover; 13. Inner pot; 20. Pot lid; 21. Surface cover; 22. Liner; 23. Inner lid; 231. Exhaust port; 232. Second installation port; 30. Sealing part; 31. Sealing cavity; 32. Sealing cover; 321. Through hole; 33. Sealing ring; 40. First float; 41. Flow channel; 50. Exhaust device; 60. Sealing structure; 70. Second float; 71. First sealing structure; 72. Second sealing structure; 100. Heating device. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0027] like Figures 1 to 6As shown, the food preparation device of this embodiment includes: a pot body 10, a pot cover 20, a first float 40 and an exhaust device 50. The pot body 10 is used to hold food to be cooked; the pot cover 20 is placed on the pot body 10, and the pot cover 20 includes a surface cover 21, an inner lining 22 and an inner cover 23 arranged from top to bottom. The pot cover 20 is provided with a sealing portion 30, and a sealing cavity 31 is provided in the sealing portion 30. The inner cover 23 is provided with an exhaust port 231 connecting the sealed cavity 31 with the interior of the pot body 10; the first float 40 is movably arranged in the exhaust port 231, and the first float 40 has a function of connecting the sealed cavity 31 with the interior of the pot body 10. The first float 40 has an open position and a sealed position in which the sealed cavity 31 is not connected to the interior of the pot body 10. The initial position of the first float 40 is the open position. When the pressure inside the pot body 10 reaches a predetermined value, the first float 40 moves from the open position to the sealed position. When the pressure inside the pot body 10 does not reach the predetermined value, the first float 40 is reset from the sealed position to the open position under the action of gravity or a reset mechanism. The exhaust device 50 is arranged in the pot cover 20 and the air intake of the exhaust device 50 is connected to the sealed cavity 31.

[0028] Utilizing the technical solution of this embodiment, the food preparation apparatus includes a first float 40 movably disposed within the air vent 231. The first float 40 has an open position and a sealed position. When the pressure within the pot body 10 reaches a predetermined value, the first float 40 moves from the open position to the sealed position. When the pressure within the pot body 10 does not reach the predetermined value, the first float 40 returns from the sealed position to the open position under the action of gravity or a reset mechanism. This structure not only enables the air vent 231 to be opened and closed, but also addresses the problem of prior art food preparation apparatuses being unable to effectively open and close the air vent 231. Furthermore, this structure is simple and easy to assemble, improving production efficiency and reducing production costs.

[0029] In order to ensure that the sealing cavity 31 of the sealing portion forms a sealed space with the interior of the pot body 10 during air extraction. Figure 4 and Figure 6 As shown, in this embodiment, the inner liner 22 is provided with a first mounting opening, and the sealing portion 30 includes a sealing cover 32 provided at the first mounting opening and a sealing ring 33 provided between the first mounting opening and the inner cover 23. The sealing cover 32, the sealing ring 33, and the inner cover 23 together form a sealed cavity 31. The sealing cover 32 is provided with a through hole 321 that communicates with the air intake port. The sealing ring 33 is provided between the inner liner 22 and the inner cover 23 to prevent air from entering the gap between the inner liner 22 and the inner cover 23 during extraction, causing air leakage and thus affecting the extraction efficiency.

[0030] like Figure 4 and Figure 5As shown, in this embodiment, the first float 40 is provided with a flow passage 41. When the first float 40 is in the open position, the sealed cavity 31 communicates with the interior of the pot body 10 through the flow passage 41. When the first float 40 is in the sealed position, the flow passage 41 is blocked by the inner wall of the air extraction port 231. The above structure is simple and easy to implement.

[0031] like Figure 5 As shown, in this embodiment, the flow channel 41 is a flow hole, one end of which is arranged on the side wall of the first float 40, and the other end of which is arranged on the top of the first float 40. Specifically, in this embodiment, the first float 40 includes a head, a tail, and a connecting portion connecting the head and the tail, and the connecting portion is movably arranged in the air extraction port 231. The head and the tail are respectively arranged on both sides of the inner cover 23, and the diameters of the head and the tail are smaller than the diameter of the connecting portion to prevent the first float 40 from falling out of the air extraction port 231. Among them, one end of the flow hole is arranged on the side wall of the connecting portion near the tail, and the other end of the flow hole is arranged on the head. The above structure ensures that the flow hole will not be blocked when the first float 40 is in the open position.

[0032] In order to enable the first float 40 to move up and down smoothly in the air extraction port 231, in this embodiment, a gap is provided between the air extraction port 231 and the first float 40. In order to prevent gas from leaking out of the gap during the pressure-up process, causing the pressure in the pot body 10 to fail to reach the predetermined pressure or to take a long time to reach the predetermined pressure, Figure 4 and Figure 5 As shown, in this embodiment, a sealing structure 60 is provided at the bottom end of the first float 40. When the first float 40 is in the sealing position, the sealing structure 60 abuts against the bottom surface of the inner cover 23 to seal the gap between the first float 40 and the air extraction port 231.

[0033] In order to realize the functions of upper pressure signal detection and stop opening, such as Figure 3 and Figure 7 As shown, in this embodiment, the food preparation appliance further includes a second float 70. The inner lid 23 is also provided with a second mounting opening 232, within which the second float 70 is movably mounted. The inner lining 22 is also provided with a stopper structure. When pressure begins to build up within the pot body 10, the second float 70 moves upward to its upper position under the action of this pressure. When the second float 70 is in its upper position, the stopper structure interferes with the second float 70 when the user attempts to open the lid, preventing the user from opening the lid and ensuring user safety.

[0034] Since the second float 70 is movably disposed in the second mounting opening 232, there is a gap between the second float 70 and the second mounting opening 232. In order to prevent the external air from entering the pot body 10 through the gap during the air extraction process, causing the pressure value in the pot body 10 to fail to reach the predetermined negative pressure value or take a long time to reach the predetermined negative pressure value, Figure 7 As shown, in this embodiment, the first and second ends of the second float 70 are respectively disposed on either side of the inner cover 23. The second end of the second float 70 is located within the pot body 10. A first sealing structure 71 is disposed on the first end of the second float 70. The second float 70 has an upper end position and a lower end position. When the second float 70 is in the lower end position, the first sealing structure 71 seals the gap between the second float 70 and the second mounting opening 232. This structure ensures steam extraction efficiency and improves user experience.

[0035] It should be noted that when the pressure inside the pot body 10 reaches a predetermined value, the second float 70 moves from the lower end position to the upper end position. When the pressure inside the pot body 10 does not reach the predetermined value, the second float 70 resets from the upper end position to the lower end position under the action of gravity.

[0036] Similarly, in order to prevent the gas from leaking out from the gap during the pressing process, causing the pressure in the pot body 10 to fail to reach the predetermined pressure, such as Figure 8 As shown, in this embodiment, a second sealing structure 72 is provided on the second end of the second float 70. When the second float 70 is in the upper end position, the second sealing structure 72 seals the gap between the second float 70 and the second mounting opening 232. This structure ensures the upward pressure efficiency and improves the user experience.

[0037] like Figure 2 As shown, in this embodiment, the pot body 10 includes, from the outside to the inside, a pot body 11, a heat-insulating cover 12, and an inner pot 13. A sealed cavity 31 communicates with the inner pot 13 via an air extraction port 231. The food preparation appliance also includes a heating device 100, which is disposed within the pot body 11 and below the inner pot 13 to heat the inner pot 13.

[0038] like Figure 3 As shown, in this embodiment, the pot body 10 and the pot cover 20 are pivotally connected.

[0039] It should be noted that the food preparation utensil of the present application is a cooking utensil, specifically an electric pressure cooker, an electric rice cooker, etc.

[0040] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A food preparation utensil, characterized in that: include: A pot body (10), wherein the pot body (10) is used to hold food to be cooked; A heating device (100) for heating food in the pot (10); A pot cover (20) is provided on the pot body (10), the pot cover (20) comprising a surface cover (21), an inner lining (22) and an inner cover (23) arranged in order from top to bottom, the pot cover (20) being provided with a sealing portion (30), a sealing cavity (31) being provided in the sealing portion (30), and an air extraction port (231) communicating with the sealing cavity (31) and the interior of the pot body (10) being provided on the inner cover (23); A first float (40) is movably arranged in the air extraction port (231), and the first float (40) has an open position in which the sealed cavity (31) is connected to the interior of the pot body (10) and a sealed position in which the sealed cavity (31) is not connected to the interior of the pot body (10). The initial position of the first float (40) is the open position. When the pressure inside the pot body (10) reaches a predetermined value, the first float (40) moves from the open position to the sealed position. When the pressure inside the pot body (10) does not reach the predetermined value, the first float (40) is reset from the sealed position to the open position under the action of gravity or a reset mechanism. An air extraction device (50) is disposed in the pot cover (20), and an air intake of the air extraction device (50) is in communication with the sealed cavity (31); The first float (40) comprises a head, a tail, and a connecting portion connecting the head and the tail, the connecting portion being movably arranged in the air extraction port (231), the head and the tail being respectively arranged on both sides of the inner cover (23), the diameter of the head and the diameter of the tail being larger than the diameter of the connecting portion, so as to prevent the first float (40) from falling out of the air extraction port (231); A sealing structure (60) is provided at the bottom end of the first float (40); when the first float (40) is located at the sealing position, the sealing structure (60) abuts against the bottom surface of the inner cover (23) to seal the gap between the first float (40) and the air extraction port (231); The food preparation utensil further comprises a second float (70), a second mounting opening (232) is further provided on the inner cover (23), the second float (70) is movably provided in the second mounting opening (232), the second float (70) has an upper end position and a lower end position, and a stop-opening structure is further provided on the inner lining (22), and when the second float (70) is located at the upper end position, the stop-opening structure interferes with the second float (70).

2. The food preparation utensil according to claim 1, wherein: The inner liner (22) is provided with a first mounting opening, and the sealing portion (30) includes a sealing cover (32) provided at the first mounting opening and a sealing ring (33) provided between the first mounting opening and the inner cover (23), the sealing cover (32), the sealing ring (33) and the inner cover (23) together form the sealing cavity (31), and the sealing cover (32) is provided with a through hole (321) communicating with the air intake port.

3. The food preparation utensil according to claim 1, wherein: The first float (40) is provided with an overflow channel (41); when the first float (40) is located in the open position, the sealed cavity (31) is communicated with the interior of the pot body (10) through the overflow channel (41); when the first float (40) is located in the sealed position, the overflow channel (41) is blocked by the inner wall of the air extraction port (231).

4. The food preparation utensil according to claim 3, wherein: The flow passage (41) is a flow hole, one end of the flow hole is arranged on the side wall of the first float (40), and the other end of the flow hole is arranged on the top of the first float (40).

5. The food preparation utensil according to claim 1, wherein: The first end and the second end of the second float (70) are respectively arranged on both sides of the inner cover (23), the second end of the second float (70) is located in the pot body (10), and a first sealing structure (71) is provided on the first end of the second float (70). When the second float (70) is located at the lower end position, the first sealing structure (71) seals the gap between the second float (70) and the second installation opening (232).

6. The food preparation utensil according to claim 5, wherein: A second sealing structure (72) is provided on the second end of the second float (70), and when the second float (70) is located at the upper end position, the second sealing structure (72) seals the gap between the second float (70) and the second installation opening (232).

7. The food preparation utensil according to claim 1, wherein: The pot body (10) comprises a pot body (11), a heat-insulating cover (12), and an inner pot (13) arranged in sequence from the outside to the inside, and the sealed cavity (31) is connected to the inner pot (13) via the air extraction port (231).

8. The food preparation utensil according to claim 1, wherein: The pot body (10) and the pot cover (20) are pivotally connected.

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