Exhaust-free pressure cooking utensil

Abstract

The utility model discloses an exhaust-free pressure cooking utensil which comprises a pot body and a pot cover covering the pot body, the pot cover is provided with a cooling cavity, the pressure cooking utensil further comprises a water tank arranged on the pot cover, the water tank is communicated with the cooling cavity, and a first water storage area, a second water storage area and a separation rib are arranged in the water tank. The pot cover is further provided with an exhaust assembly, the exhaust assembly is communicated with the exhaust channel, a water outlet is formed in the first water storage area, and a water return opening is formed in the second water storage area. After flowing back to the water tank, liquid with higher temperature is stored in the second water storage area preferentially due to the limitation of the separation rib and cannot flow into the first water storage area excessively, so that the mixing of cold water and hot water in the water tank is slowed down to a certain extent, the liquid flowing to the pot cover from the water outlet is ensured to be at lower temperature, and the temperature difference between the liquid and the pot cover is ensured; and the water cooling effect is guaranteed, rapid cooling and pressure relief are facilitated, and rapid cover opening is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to an exhaust-free pressure cooking appliance. Background Art

[0002] After pressure cooking, pressure cookers need to release the pressure to equalize the pressure inside the pot with the outside atmosphere before the lid can be opened safely. Traditional pressure cookers release pressure through venting, which is not only slow but also noisy. The venting process can also cause liquid in the pot to spray out, contaminating the lid and affecting the user experience.

[0003] Some pressure cooking appliances also use water cooling to relieve pressure. Compared to exhaust, this method offers faster pressure relief and produces less noise during the process, leading to its increasing adoption in pressure cooking appliances. The water-cooling pressure relief assembly typically includes a water tank. In the prior art, some pressure cooking appliances incorporate this water tank into the lid, and to facilitate user visibility of the water level and refilling, the water tank is exposed outside the lid.

[0004] The pot lid is also provided with exhaust components such as a pressure relief valve and a float valve, which are also exposed on the pot lid. As a result, the number of components on the surface of the pot lid is large and the arrangement is messy, which not only affects the appearance of the pot lid, but also the exposed exhaust components may be accidentally touched by the user during use, resulting in the seal of the exhaust components being destroyed, or the high-temperature gas during the exhaust process may burn the user.

[0005] In addition, the existing water tank is usually used to store cold water before cooling and to collect water with a higher temperature after water cooling. The temperature of the water increases greatly after contacting the high-temperature pot cover. At this time, it flows back into the water tank and exchanges heat with the cold water stored in the water tank, transferring heat to the cold water, causing the temperature of the cold water to also increase. At this time, the temperature of the water flowing to the pot cover is higher, and the temperature difference between the water and the pot cover is reduced, and the heat exchange efficiency between the two is reduced, thereby greatly reducing the efficiency of water cooling. Utility Model Content

[0006] The utility model provides an exhaust-free pressure cooking appliance to solve the problems of a large number of water tanks and exhaust components on the surface of the pot cover and their disorderly arrangement, and the intersection of cold and hot water in the water tank causing the water temperature to rise and affecting the water cooling efficiency.

[0007] The technical solution adopted by this utility model is:

[0008] A vent-free pressure cooking device comprises a pot body and a pot lid covering the pot body, the pot lid being provided with a cooling cavity. The pressure cooking device further comprises a water tank arranged in the pot lid, the water tank being connected to the cooling cavity, the water tank having a first water storage area, a second water storage area, and a dividing rib inside the water tank, the dividing rib forming an exhaust channel between the first water storage area and the second water storage area, the pot lid being further provided with an exhaust assembly, the exhaust assembly being connected to the exhaust channel, the first water storage area being provided with a water outlet, and the second water storage area being provided with a water return port.

[0009] The pressure cooking device of the present invention also has the following additional technical features:

[0010] There is a flow gap between the dividing rib and the inner wall of the water tank, and the first water storage area and the second water storage area are communicated through the flow gap.

[0011] The pot cover includes a surface cover and a lining cover located on the lower side of the surface cover. A cover plate is arranged between the water tank and the lining cover. The cover plate has a positioning groove that cooperates with the water tank. Through holes are provided in the positioning groove corresponding to the water outlet and the return water port. The water outlet and the return water port are connected to the cooling chamber through the through holes.

[0012] The water tank is detachably fixed to the pot cover, and water flow switches are provided at the water outlet and water return port. The pot cover is provided with trigger parts corresponding to the water outlet and water return port. When the water tank is installed to the pot cover, the trigger part pushes the water flow switch to open the water outlet and water return port.

[0013] The top surface of the water tank is also provided with a vent hole, a sealing valve is provided at the vent hole, and at least one water flow switch cooperates with the sealing valve so that when the water flow switch is driven by the trigger, the sealing valve is driven to move to open the vent hole.

[0014] The pressure cooking appliance also includes a seal. The water tank is provided with a water inlet. The seal can move relative to the water tank to open or close the water inlet. A limiting rib is provided inside the water inlet, and the limiting rib can cooperate with the seal stopper.

[0015] The pot cover includes a lining cover and an inner cover. The exhaust assembly includes a pressure relief valve and a float valve arranged on the inner cover. The pressure relief valve extends into the exhaust channel. The float valve is located on one side of the water tank and is connected to the exhaust channel. The pressure relief valve includes an exhaust pipe. The lining cover is provided with an air outlet connected to the float valve, and a mounting port for the exhaust pipe to extend. The height of the air outlet is higher than the height of the mounting port.

[0016] The water tank protrudes from the top surface of the pot cover; or, the top surface of the pot cover has a decorative area and an installation area, the installation area is lower than the decorative area, and the water tank is arranged in the installation area so that the top surface of the water tank is flush with the top surface of the decorative area.

[0017] The installation area extends to the edge of the pot cover, the top surface of the water tank is provided with a decorative layer, the side wall of the water tank is exposed outside the pot cover, and the side wall of the water tank has a visual area.

[0018] The water tank comprises a tank body and a tank cover, wherein the tank cover covers the tank body, and the tank cover is provided with an exhaust area corresponding to the exhaust channel, and an exhaust port is provided in the exhaust area.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0020] 1. In the present invention, the dividing ribs enclose an exhaust passage within the water tank, and the exhaust assembly communicates with the exhaust passage, allowing the exhaust assembly to exhaust through the interior of the water tank. This, on the one hand, achieves a centralized arrangement of the water tank and the exhaust assembly, further concentrating the functional components on the lid surface and making it more convenient for the user. On the other hand, the exhaust passage is located within the water tank, and the exhaust assembly is located within the exhaust passage. The water tank can shield the exhaust passage and the exhaust assembly within it, thereby achieving a concealed design for the exhaust assembly, reducing the number of components exposed on the lid surface and making the lid look simpler.

[0021] Furthermore, the venting channel formed by the dividing ribs divides the interior of the water tank into a first water storage area and a second water storage area, with the water outlet located in the first water storage area and the return outlet in the second water storage area. Water in the water tank flows out through the outlet, where it comes into contact with the pot lid, cooling it. The liquid, which has heated up after contact with the pot lid, then flows back into the water tank through the return outlet. The return outlet is located in the second water storage area, so that after the warmer liquid returns to the water tank, it is preferentially stored in the second water storage area due to the restriction of the dividing ribs, rather than flowing excessively into the first water storage area. This leaves the first water storage area with cooler water, which is used to cool the pot lid. This, in turn, slows down the mixing of cold and hot water in the water tank, concentrating more hot water in the second water storage area and more cold water in the first water storage area. This ensures that the liquid flowing from the outlet to the pot lid is at a lower temperature, maintaining a temperature differential between the liquid and the pot lid, and thus ensuring a water-cooling effect. This facilitates rapid cooling and pressure relief, allowing for quick lid opening.

[0022] In addition, by using water cooling to reduce the pressure, there is no need to open the exhaust valve to exhaust when releasing the pressure. While ensuring the pressure relief speed, the whistling sound of the air flow during exhaust is reduced, thereby reducing noise, and will not cause liquid to spray out and cause pollution to the pot lid, greatly improving the user experience.

[0023] 2. As a preferred embodiment of the present invention, a flow gap is provided between the dividing rib and the inner wall of the water tank, and the first and second water storage areas are connected through the flow gap. The connection between the first and second water storage areas increases the cold water storage capacity within the water tank. When adding water to the water tank, the tank can be completely filled, allowing cold water to be stored in both the first and second water storage areas. When hot water flows back into the water tank, it first reaches the second water storage area. However, the flow gap between the dividing rib and the interior of the water tank is relatively small, so the hot water in the second water storage area cannot flow into the first water storage area in large quantities, but can only flow into the first water storage area at a relatively slow rate. At the same time, the continuous flow of hot water into the second water storage area through the reflux port also promotes the cold water originally in the second water storage area, forcing the cold water in the second water storage area into the first water storage area, thereby replenishing the first water storage area with cold water, ensuring sufficient water-cooling liquid and allowing more cold water to flow to the pot lid during the water cooling process.

[0024] 3. As a preferred embodiment of the present invention, the pot cover includes a surface cover and a lining cover located on the lower side of the surface cover. A cover plate is provided between the water tank and the lining cover. The cover plate has a positioning groove that matches the water tank. Through holes are provided in the positioning groove corresponding to the water outlet and the water return port. The water outlet and the water return port are connected to the cooling chamber through the through holes. The lining cover is provided with many parts and electrical components. By providing a cover plate between the lining cover and the water tank, and the cover plate has a positioning groove, on the one hand, the positioning groove can be positioned with the water tank, so that the user can quickly align the water tank with the positioning groove and complete the installation of the water tank. On the other hand, the positioning groove can collect liquid leaked from the water tank, so that the leaked liquid cannot pass through the cover plate to reach the lining cover, nor can it overflow laterally to other areas of the pot cover. At the same time, it is also convenient for the user to clean the liquid collected on the cover plate.

[0025] 4. As a preferred embodiment of the present invention, water flow switches are provided at the water outlet and the water return port, and an air vent is further provided on the top surface of the water tank. A sealing valve is provided at the air vent, and at least one water flow switch cooperates with the sealing valve so that when the water flow switch is driven by a trigger, the sealing valve is driven to move to open the air vent. When the water tank is installed on the pot cover, the trigger on the pot cover triggers the water flow switch, causing the water flow switch to move and open the water outlet and the water return port. At this time, the water outlet and the water return port are connected to the cooling chamber. At the same time, the water flow switch drives the sealing valve at the air vent to move, causing the air vent to connect the inside of the water tank with the outside atmosphere, so that the air pressure inside the water tank is balanced with the outside atmospheric pressure, and thus the liquid can be continuously transported to the pot cover, avoiding the generation of negative pressure inside the water tank, which causes the liquid to be unable to flow out or the water discharge efficiency to decrease.

[0026] 5. As a preferred embodiment of the present invention, the pot lid includes a lining cover and an inner cover. The exhaust assembly includes a pressure relief valve and a float valve disposed on the inner cover. The pressure relief valve extends into the exhaust passage, and the float valve is located on one side of the water tank and communicates with the exhaust passage. The pressure relief valve includes an exhaust pipe. The lining cover is provided with an outlet connected to the float valve and a mounting opening for the exhaust pipe to extend. The outlet is located at a higher height than the mounting opening. The outlet is located at a higher height than the mounting opening. When the weight is lifted to exhaust air, liquid, food residue, etc. ejected from the exhaust pipe accumulate at the mounting opening of the lining cover rather than directly reaching the outlet. This avoids the risk of impurities reaching the float valve from the mounting opening during the exhaust process of the pressure relief valve, keeps the float valve clean, and ensures that the float valve can reliably move up and down, preventing the float valve from becoming stuck by liquid or food and becoming immobilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part 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:

[0028] Figure 1 This is an exploded view of the structure of a pot cover according to one embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional view of a pot cover according to one embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional view of a pot cover from another perspective in one embodiment of the present invention;

[0031] Figure 4 This is a structural exploded view of a water tank according to one embodiment of the present invention;

[0032] Figure 5 for Figure 4 Cross-sectional view of the grey water tank;

[0033] Figure 6 for Figure 4 Cross-sectional view of the grey water tank from another perspective;

[0034] Figure 7 This is a structural diagram of a cover plate in one embodiment of the present invention;

[0035] Figure 8 This is a structural schematic diagram of the bottom of the water tank under one embodiment of the present utility model;

[0036] Figure 9 for Figure 8 Schematic diagram of the structure of the medium water tank with the seal opening the water inlet;

[0037] Figure 10 for Figure 8 Schematic diagram of the structure of the intermediate water tank, wherein the seal is not shown;

[0038] Figure 11 This is a schematic structural diagram of a sealing member according to one embodiment of the present invention;

[0039] Figure 12 for Figure 11 Schematic diagram of the structure on the other side of the middle seal;

[0040] Figure 13 This is a structural diagram of a water inlet seat in one embodiment of the present invention;

[0041] Figure 14 This is an exploded view of a portion of a pot cover according to another embodiment of the present invention;

[0042] Figure 15 This is a cross-sectional view of a pot cover according to another embodiment of the present invention;

[0043] Figure 16 for Figure 15 Cross-sectional view of the middle pot lid from another perspective.

[0044] in:

[0045] 1 pot cover; 11 surface cover; 12 lining cover; 121 air outlet; 122 installation port; 13 inner cover; 14 locking ring; 15 cooling chamber; 16 decoration area; 17 installation area;

[0046] 2 water tank; 21 exhaust channel; 22 water storage chamber; 221 first water storage area; 222 second water storage area; 223 flow gap; 224 separation rib; 23 connecting pipe; 24 water flow switch; 241 push rod; 242 sealing portion; 243 first elastic member; 25 sealing valve; 251 push rod; 252 valve port sealing ring; 253 second elastic member; 26 box body; 261 water outlet; 262 water return port; 263 decorative layer; 264 visual area; 27 box cover; 271 exhaust port; 272 vent; 28 protrusion; 29 water inlet; 291 limiting rib;

[0047] 3 exhaust assembly; 31 float valve; 32 pressure relief valve; 321 exhaust pipe;

[0048] 4 cover plate; 41 positioning groove; 42 through hole; 43 step portion;

[0049] 5 sealing member; 51 sealing plug; 511 hook; 512 hand-held portion; 52 connecting arm; 53 mounting portion;

[0050] 6. Water inlet seat; 61. Trigger component. DETAILED DESCRIPTION

[0051] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0053] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "embodiment", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0056] like Figure 1 、 Figure 2 、 Figure 4As shown, a vent-free pressure cooking device includes a pot body and a pot lid 1 covering the pot body, the pot lid 1 is provided with a cooling chamber 15, and the pressure cooking device also includes a water tank 2 arranged in the pot lid 1, the water tank 2 is connected to the cooling chamber 15, and the water tank 2 has a first water storage area 221, a second water storage area 222, and a dividing rib 224. The dividing rib 224 forms an exhaust channel 21 between the first water storage area 221 and the second water storage area 222. The pot lid 1 is also provided with an exhaust assembly 3, and the exhaust assembly 3 is connected to the exhaust channel 21. The first water storage area 221 is provided with a water outlet 261, and the second water storage area 222 is provided with a water return port 262.

[0057] It should be noted that the present invention does not limit the structure and function of the exhaust assembly 3. For example, the exhaust assembly 3 includes a float valve 31, which is used to exhaust cold air from the pot during the initial cooking phase. Alternatively, the exhaust assembly 3 may include a pressure relief valve 32 or a pressure limiting valve. This allows the pressure cooking appliance to release pressure through the pressure relief valve 32 and the water cooling assembly after pressure cooking is complete, further accelerating the pressure release process. The pressure limiting valve is used to release pressure when the pressure inside the pot exceeds a set maximum pressure, restoring the pot to a safe pressure. Although the pressure relief valve 32 is provided, the primary pressure relief method in the present invention still relies on the water cooling assembly. The pressure relief valve 32 serves only as an auxiliary pressure relief mechanism. When the water cooling efficiency is high, the pressure relief valve 32 may not be activated. Furthermore, as the water storage chamber 22 cools, the kinetic energy of the airflow slows when the pressure relief valve 32 is vented, which also reduces noise.

[0058] It should be noted that the "no exhaust" in the present invention means that the pressure relief process after cooking is completed does not completely rely on the pressure relief valve for exhaust and pressure relief, and does not mean that the pot cover 1 is not provided with any exhaust structure. For example, the pot cover 1 can still be provided with a float valve to discharge the cold air in the pot before pressure is applied.

[0059] In the present invention, the separating ribs 224 form an exhaust passage 21 within the water tank 2. The exhaust assembly 3 is in communication with the exhaust passage 21, allowing the exhaust of the exhaust assembly 3 through the interior of the water tank 2. This, on the one hand, achieves a centralized arrangement of the water tank 2 and the exhaust assembly 3, making the functional components on the surface of the pot lid 1 more centralized and more convenient for the user. On the other hand, the exhaust passage 21 is located inside the water tank 2, and the exhaust assembly 3 is located within the exhaust passage 21. The water tank 2 can shield the exhaust passage 21 and the exhaust assembly 3 therein, thereby achieving a hidden design of the exhaust assembly 3, reducing the number of components exposed on the surface of the pot lid 1, and making the pot lid 1 more concise in appearance.

[0060] In addition, the exhaust channel 21 formed by the dividing rib 224 divides the interior of the water tank 2 into a first water storage area 221 and a second water storage area 222. The water outlet 261 is located in the first water storage area 221, and the water return port 262 is located in the second water storage area 222. Water in the water tank 2 flows out through the water outlet 261, comes into contact with the pot lid 1, and is cooled. The liquid, which has heated up after contact with the pot lid 1, then flows back into the water tank 2 through the return port. The return port 262 is located in the second water storage area 222. After the higher-temperature liquid returns to the water tank 2, it is preferentially stored in the second water storage area 222 due to the restriction of the dividing rib 224, and does not flow excessively into the first water storage area 221. As a result, the first water storage area 221 still contains cooler water, which is used to cool the pot lid 1. This will slow down the mixing of cold water and hot water in the water tank 2 to a certain extent, so that the hot water is more concentrated in the second water storage area 222, while the cold water is more concentrated in the first water storage area 221, thereby ensuring that the liquid flowing from the water outlet 261 to the pot cover 1 is at a lower temperature, ensuring the temperature difference between the liquid and the pot cover 1, and then ensuring the water cooling effect, which helps to quickly cool down and relieve pressure, and realize quick opening of the cover.

[0061] It should be noted that the present invention does not limit the liquid in the water tank 2, that is, the water-cooling medium used to cool and relieve the pressure of the pot cover 1. In a specific embodiment, the water-cooling medium is water, and the user can directly use municipal tap water. In other embodiments, the water-cooling medium can also be a coolant, which is not limited here.

[0062] Preferably, if Figure 2 、 Figure 3 、 Figure 4 As shown, the water tank 2 has a water storage chamber 22 inside, which surrounds the outer periphery of at least part of the exhaust channel 21. The first water storage area 221 is located on one side of the water storage area, and the second water storage area 222 is located on the other side of the water storage chamber 22.

[0063] The cold water in the water storage chamber 22 also cools the gas in the exhaust passage 21. This causes bubbles that rise with the gas into the exhaust passage 21 to burst under the low temperature, separating the gas and liquid. The liquid then falls back under gravity, preventing the liquid from being ejected from the outlet of the exhaust passage 21 and contaminating the pot lid 1. Furthermore, the low temperature reduces the kinetic energy of the gas flow, thereby reducing the whistling sound during the exhaust process, achieving the desired exhaust noise and improving the user experience.

[0064] As a preferred embodiment of the present invention, Figure 4 As shown, there is a flow gap 223 between the dividing rib 224 and the inner wall of the water tank 2 , and the first water storage area 221 and the second water storage area 222 are connected through the flow gap 223 .

[0065] The first water storage area 221 and the second water storage area 222 are connected, increasing the cold water storage capacity within the water tank 2. When adding water to the water tank 2, the water tank 2 can be completely filled, allowing cold water to be stored in both the first water storage area 221 and the second water storage area 222. When hot water flows back into the water tank 2, it first reaches the second water storage area 222. However, the flow gap 223 between the dividing rib 224 and the interior of the water tank 2 is relatively small. Therefore, the hot water in the second water storage area 222 cannot flow into the first water storage area 221 in large quantities, but can only flow into the first water storage area 221 at a relatively slow rate. Furthermore, the hot water continuously enters the second water storage area 222 through the return port, which also promotes the cold water originally in the second water storage area 222, forcing the cold water in the second water storage area 222 into the first water storage area 221, thereby replenishing the first water storage area 221 with cold water, ensuring sufficient water cooling liquid and allowing more cold water to flow to the pot lid 1 during the water cooling process.

[0066] Specifically, in one embodiment, Figure 4 As shown, the dividing rib 224 is disposed near the sidewall of one side of the water tank 2, and together with the sidewall of the water tank 2 on one side, forms an exhaust passage 21. A flow gap 223 is formed between the dividing rib 224 and the sidewall on the other side opposite to the dividing rib 224. In another embodiment, the dividing rib 224 can also be positioned in the center of the water tank 2 to form the exhaust passage 21, so that the water storage chamber 22 completely surrounds the exhaust passage 21, with the first water storage area 221 and the second water storage area 222 located on either side of the exhaust passage 21, and the flow gap 223 formed between the dividing rib 224 and the other sidewalls of the water tank 2.

[0067] In a preferred embodiment, Figure 1 、 Figure 7 、 Figure 14 As shown, the pot cover 1 includes a surface cover 11 and a lining cover 12 located on the lower side of the surface cover 11. A cover plate 4 is arranged between the water tank 2 and the lining cover 12. The cover plate 4 has a positioning groove 41 that cooperates with the water tank 2. A through hole 42 is provided in the positioning groove 41 corresponding to the water outlet 261 and the return water port 262. The water outlet 261 and the return water port 262 are connected to the cooling chamber 15 through the through hole 42.

[0068] The lining cover 12 is provided with many parts and electrical components. A cover plate 4 is provided between the lining cover 12 and the water tank 2, and the cover plate 4 has a positioning groove 41. On the one hand, the positioning groove 41 can be positioned with the water tank 2, so that the user can quickly align the water tank 2 with the positioning groove 41 to complete the installation of the water tank 2. On the other hand, the positioning groove 41 can collect the leaked liquid in the water tank 2, so that the leaked liquid cannot pass through the cover plate 4 to reach the lining cover 12, nor can it overflow laterally to other areas of the pot cover 1. At the same time, it is also convenient for the user to clean the liquid collected on the cover plate 4.

[0069] Specifically, such as Figure 7As shown, the edge of the cover plate 4 is bent upward to form a positioning groove 41.

[0070] Preferably, a sealing ring is provided at the through hole 42 to seal the gaps at the water return port 262 and the water outlet 261 to prevent leakage.

[0071] It should be noted that the present invention does not limit the assembly method of the water tank 2 and the pot cover 1. In one embodiment, the water tank 2 is non-detachably fixed to the pot cover 1. In this embodiment, a top cover or a water filling port is provided on the top of the water tank 2, and the user can add cooling liquid to the water tank 2 by opening the top cover of the water tank 2 or through the water filling port.

[0072] In a preferred embodiment, Figure 1 As shown, the water tank 2 is detachably fixed to the pot cover 1 , and at least a portion of the water tank 2 is exposed outside the pot cover 1 .

[0073] The exposed design of the water tank 2 allows the user to intuitively see the amount of water inside the water tank 2, allowing the user to refill the water tank 2 more promptly to ensure the normal use of the water cooling function. The detachable design of the water tank 2 not only makes it convenient for the user to clean the interior of the exhaust passage 21, but also facilitates the water refilling operation. In this embodiment, the user can use a variety of methods to refill the water tank 2 with liquid. For example, the water tank 2 can be removed from the pot cover 1, and after refilling the water tank 2, the water tank 2 can be installed on the pot cover 1. For another example, the cooling medium can be added to the water tank 2 directly from the top of the water tank 2 without removing the water tank 2, which is not limited here.

[0074] Further, if Figure 4 、 Figure 5 、 Figure 6 As shown, water flow switches 24 are provided at the water outlet 261 and the water return port 262, and the pot cover 1 is provided with a trigger member 61 corresponding to the water outlet 261 and the water return port 262. When the water tank 2 is installed to the pot cover 1, the trigger member 61 pushes the water flow switch 24 to open the water outlet 261 and the water return port 262.

[0075] When the water tank 2 is removed, the water flow switch 24 blocks the water outlet 261 and the water return port 262. At this time, the user can add liquid to the water tank 2 without leakage. When the water tank 2 is installed in place on the pot cover 1, the trigger 61 on the pot cover 1 pushes the water flow switch 24 to move, thereby opening the water outlet 261 and the water return port 262. At this time, the water tank 2 is connected to the cooling chamber 15.

[0076] Preferably, if Figure 1 、 Figure 13As shown, the pot cover 1 is also provided with a water inlet seat 6 and a water return seat. The trigger member 61 is a raised structure provided on the water inlet seat 6 and the water return seat. The water return seat is used to connect the return water port 262 with the cooling chamber 15, and the water inlet seat 6 is used to connect the water outlet 261 with the cooling chamber 15.

[0077] Specifically, such as Figure 4 、 Figure 5 As shown, the water flow switch 24 includes a push rod 241 and a sealing portion 242 located at the top of the push rod 241. A first elastic member 243 is sleeved on the push rod 241. The push rod 241 passes through the return water port 262 and the water outlet 261 so that the sealing portion 242 is located inside the water tank 2. When the water tank 2 is removed from the pot lid 1, the push rod 241 falls under the action of the first elastic member 243, causing the sealing portion 242 to abut against the edges of the water outlet 261 and the return water port 262, thereby sealing them. When the water tank 2 is installed in place, the trigger member 61 pushes the push rod 241 upward, causing the sealing portion 242 to move upward with the push rod 241 and disengage from the edges of the water outlet 261 and the return water port 262, thereby opening the water tank 2. At this time, the first elastic member 243 is compressed.

[0078] Furthermore, a vent hole 272 is provided on the top surface of the water tank 2, and a sealing valve 25 is provided at the vent hole 272. At least one water flow switch 24 cooperates with the sealing valve 25 so that when the water flow switch 24 is driven by the trigger member 61, it drives the sealing valve 25 to move to open the vent hole 272.

[0079] In this embodiment, the sealing valve 25 is linked to the water flow switch 24. When the water tank 2 is mounted on the pot lid 1, the trigger member 61 on the pot lid 1 triggers the water flow switch 24, causing the water flow switch 24 to move and open the water outlet 261 and the water return port 262. The water outlet 261 and the water return port 262 are now connected to the cooling chamber 15. Simultaneously, the water flow switch 24 drives the sealing valve 25 at the vent 272 to move, causing the vent 272 to connect the interior of the water tank 2 with the outside atmosphere. This balances the air pressure inside the water tank 2 with the outside atmospheric pressure, allowing liquid to be continuously supplied to the pot lid 1, avoiding the generation of negative pressure inside the water tank 2 that could prevent liquid from flowing out or reduce water discharge efficiency.

[0080] Specifically, such as Figure 4 、 Figure 5As shown, the sealing valve 25 includes a push rod 251, a valve port sealing ring 252 disposed at the top of the top cover, and a second elastic member 253 sleeved around the outer periphery of the push rod 251. The valve port sealing ring 252 is located outside the water tank 2. When the water tank 2 is not installed, the push rod 251 sinks under the action of the second elastic member 253, so that the valve port sealing ring 252 abuts and seals against the edge of the vent hole 272. When the trigger member 61 drives the water flow switch 24 to move, the water flow switch 24 triggers the push rod 251, causing the top cover to move upward. At this time, the valve port sealing ring 252 disengages from the edge of the vent hole 272, opening the vent hole 272. At this time, the second elastic member 253 is compressed.

[0081] Specifically, such as Figure 5 As shown, the push rod 251 is disposed vertically corresponding to the water flow switch 24 at one of the water outlet 261 and the water return outlet 262, so that the water flow switch 24 at that location triggers the push rod 251. Of course, the sealing valve 25 can also be coordinated with both water flow switches 24 so that both water flow switches 24 jointly trigger the sealing valve 25 to move, which is not limited here.

[0082] Furthermore, the edges of the water outlet 261, the return water port 262 and the vent 272 are all provided with matching slopes, which gradually decrease from the outside to the inside so that the sealing part 242 and the valve port sealing ring 252 can abut against the matching slopes for sealing, thereby improving the sealing stability.

[0083] Preferably, if Figures 8 to 10 As shown, the pressure cooking appliance also includes a sealing member 5. The water tank 2 is provided with a water inlet 29. The sealing member 5 can move relative to the water tank 2 to open or close the water inlet 29. A limiting rib 291 is provided inside the water inlet 29. The limiting rib 291 can cooperate with the sealing member 5 to stop.

[0084] The water inlet 29 is convenient for users to add liquid to the water tank 2, and the seal 5 can seal the water inlet 29 to prevent the liquid in the water tank 2 from leaking. It should be noted that the present invention does not limit the assembly method of the seal 5 and the water tank 2. In one embodiment, the seal 5 can be removed from the water tank 2. When the seal 5 is removed, the user can fully open the water inlet 29 and inject liquid into the water tank 2. In another embodiment, Figure 9 As shown, one end of the seal 5 is fixed to the water tank 2 so that the seal 5 can be flipped relative to the water tank 2 to open or cover the water inlet 29, so that the seal 5 always remains connected to the water tank 2, making it easy to store the seal 5 and avoid losing it due to the user's random placement.

[0085] Of course, in other embodiments, the sealing member 5 may be moved relative to the water tank 2 in other ways to open and close the water inlet 29, such as horizontal rotation, sliding, etc., which are not limited here.

[0086] Due to the existence of the limiting rib 291, the sealing member 5 can be limited so that the sealing member 5 will not be excessively inserted into the water tank 2. Figure 10 As shown, the limiting ribs 291 are arranged in a cross shape in the water injection port 29. Of course, the limiting ribs 291 can also be in other shapes as long as they can form a stop for the sealing member 5 and can maintain the conduction of the water injection port 29.

[0087] like Figure 9 、 Figure 11 As shown, the seal 5 is further provided with a hook 511, so that when the seal 5 is installed in place, the hook 511 can extend into the interior of the water tank 2 and engage with the edge of the water inlet 29 to form a fixed position, thereby preventing the seal 5 from falling off. The hook 511 is staggered with the limiting rib 291.

[0088] Further, if Figure 1 As shown, the water tank 2 is detachably fixed to the pot cover 1 , and the water inlet 29 is located on the side of the water tank 2 facing the pot cover 1 .

[0089] Since the water inlet 29 faces downward, it can serve as a check on the installation of the seal 5. If the user does not install the seal 5 properly, the liquid in the water tank 2 will flow out through the water inlet 29. The user will be notified in advance before the water tank 2 is installed on the pot lid 1, and the user will be prompted to install and seal the seal 5 accurately, thus avoiding water leakage from the water inlet 29 after the water tank 2 is installed.

[0090] Specifically, such as Figure 11 、 Figure 12 As shown, the sealing member 5 includes a connecting arm 52, a sealing plug 51 located at one end of the connecting arm 52, and a mounting portion 53 located at the other end of the connecting arm 52. The mounting portion 53 is fixedly connected to the water tank 2, and the sealing plug 51 is used to cooperate with the water filling port 29 to seal. The sealing plug 51 is provided with a handle 512 for easy grasping by the user.

[0091] As a preferred embodiment of the present invention, Figure 2 As shown, the pot cover 1 includes a lining cover 12 and an inner cover 13, and the exhaust assembly 3 includes a pressure relief valve 32 and a float valve 31 arranged on the inner cover 13. The pressure relief valve 32 extends into the exhaust channel 21, and the float valve 31 is located on one side of the water tank 2 and is connected to the exhaust channel 21; the pressure relief valve 32 includes an exhaust pipe 321, and the lining cover 12 is provided with an air outlet 121 connected to the float valve 31, and a mounting port 122 for the exhaust pipe 321 to extend, and the height of the air outlet 121 is higher than the height of the mounting port 122.

[0092] The height of the air outlet 121 is higher than the mounting port 122, so that when the weight is lifted up to exhaust, the liquid, food residues, etc. sprayed from the exhaust pipe 321 will gather more at the mounting port 122 of the lining cover 12, and will not directly reach the air outlet 121, thereby avoiding the risk of impurities reaching the float valve 31 from the mounting port 122 during the exhaust process of the pressure relief valve 32, so that the float valve 31 remains clean, thereby ensuring that the float valve 31 can move up and down reliably, and preventing the float valve 31 from being stuck by liquid or food and unable to move.

[0093] Specifically, such as Figure 2 、 Figure 6 As shown, a connecting pipe 23 is provided on the side of the water tank 2 , and the air outlet 121 is connected to the exhaust channel 21 through the connecting pipe 23 , so that the float valve 31 is connected to the exhaust channel 21 .

[0094] like Figure 4 、 Figure 7 As shown, a cover plate 4 is provided between the lining cover 12 and the water tank 2. A step portion 43 is provided on the cover plate 4 or the lining cover 12 between the air outlet 121 and the mounting port 122. The air outlet 121 is provided on the step portion 43 so that the air outlet 121 is higher than the mounting port 122. A protrusion 28 is provided on the side wall of the water tank 2 to cooperate with the step portion 43. The protrusion 28 is placed on the step portion 43 to connect the connecting pipe 23 with the exhaust channel 21, and the lower end surface of the water tank 2 is docked with the mounting port 122.

[0095] like Figure 2 、 Figure 3 As shown, the pot cover 1 further includes a locking ring 14 , which can rotate relative to the lining cover 12 to lock or unlock the pot cover 1 and the pot body, and the inner cover 13 is detachably fixed to the lining cover 12 .

[0096] Preferably, if Figure 4 As shown, the water tank 2 includes a tank body 26 and a tank cover 27 . The tank cover 27 covers the tank body 26 . The tank cover 27 has an exhaust area corresponding to the exhaust channel 21 . The exhaust area is provided with an exhaust port 271 .

[0097] Specifically, the present invention does not limit the assembly method of the box cover 27 and the box body 26. In one embodiment, the box cover 27 and the box body 26 are integrally formed, for example, fixed together by ultrasonic welding. In another embodiment, the box cover 27 and the box body 26 are separate structures so that the box cover 27 can be removed from the box body 26 to facilitate the user to add water.

[0098] Preferably, the pot cover 1 has a connecting end and an opening and closing end, the connecting end is rotatably connected to the pot body, the opening and closing end can be flipped around the connection to open or close the lid, and the water tank 2 is arranged near the connecting end.

[0099] The connection end and the opening and closing end are relatively arranged at the two ends of the pot lid 1. The water tank 2 is closer to the rotation center of the pot lid 1, and the lever arm between the water tank 2 and the rotation center of the pot lid 1 is shorter. On the one hand, the structural center of gravity of the pot lid 1 is moved backward, closer to the rotation center. Therefore, the torsion force required for the components such as the torsion spring that dampen or assist the movement of the pot lid 1 is small. At the same time, the stress on the torsion spring is smaller, and the torsion spring is less likely to break or be damaged, which increases the service life of the torsion spring and saves costs. In addition, the force exerted by the torsion spring on the pot lid 1 is more stable, and the movement of the pot lid 1 during flipping and opening is smoother, reducing the shaking of the pot lid 1. At the same time, because the center of gravity of the pot lid 1 is closer to the connection end, the user can save more effort when operating the lid.

[0100] Specifically, the left and right center lines of the pot cover 1 can be used as dividing lines to divide the pot cover 1 into a front area and a rear area, the opening and closing end is located in the front area, the connecting end is located in the rear area, and the water tank 2 is located in the rear area, so that the water tank 2 is closer to the connecting end than the center of the pot cover 1.

[0101] In a preferred embodiment, Figures 1 to 3 As shown, the water tank 2 protrudes from the top surface of the pot cover 1.

[0102] In another preferred embodiment, Figures 14 to 16 As shown, the top surface of the pot cover 1 has a decorative area 16 and a mounting area 17 , the mounting area 17 is lower than the decorative area 16 , and the water tank 2 is arranged in the mounting area 17 so that the top surface of the water tank 2 is flush with the top surface of the decorative area 16 .

[0103] The installation area 17 is lower than the decorative area 16, forming a space for accommodating the water tank 2. When the water tank 2 is installed in the installation area 17, its top surface is flush with the decorative area 16, so that the top surface of the water tank 2 constitutes part of the appearance surface of the top surface of the pot cover 1, which not only makes the appearance of the pot cover 1 more unified, but also reduces the space occupied by the entire cooking appliance and prevents the water tank 2 from protruding from other objects and interfering.

[0104] Moreover, since the appearance of the water tank 2 is more uniform with that of the pot cover 1, the volume of the water tank 2 can be increased by increasing the area of the installation area 17, thereby further improving the water storage capacity of the water tank 2 while ensuring the appearance quality.

[0105] In addition, since the water outlet 261 and the return water port 262 of the water tank 2 are both located at the bottom of the water tank, the increase in the area of the water tank 2 can further increase the distance between the water outlet 261 and the return water port 262, thereby further reducing the mixing and heat exchange between the higher temperature coolant entering the water tank 2 from the return water port 262 and the lower temperature coolant at the water outlet 261, thereby improving the cooling efficiency.

[0106] It should be noted that due to factors such as processing errors and assembly errors, the top surface of the water tank 2 may not be completely flush with the decorative area 16. The present invention allows a certain range of step difference between the two under the influence of factors such as errors.

[0107] Further, if Figure 15 As shown, the exhaust assembly 3 includes a pressure relief valve 32 located in the exhaust channel 21. Since the pressure relief valve 32 is surrounded by the water tank 2, the pressure relief valve 32 will not protrude from the top surface of the pot cover 1, so that the top appearance surface of the pot cover 1 is a large plane structure formed by the decorative area 16 and the top surface of the water tank 2.

[0108] Preferably, if Figure 15 、 Figure 16 As shown, the installation area 17 extends to the edge of the pot cover 1 , the top surface of the water tank 2 is provided with a decorative layer 263 , the side wall of the water tank 2 is exposed from the pot cover 1 , and the side wall of the water tank 2 has a visible area 264 .

[0109] The sidewalls of the water tank 2 form part of the exterior surface of the pot lid 1. A decorative layer 263 is provided on the top, which together with the decorative area 16 forms the top exterior surface of the pot lid 1, enhancing the aesthetics of the pot lid 1. The sidewalls facilitate user installation and removal of the water tank 2 and allow for observation of the liquid level within the water tank 2. Preferably, the sidewalls of the water tank 2 are also provided with handles to facilitate installation and removal of the water tank 2.

[0110] Specifically, the side wall of the water tank 2 can be made of transparent material as a whole, or a certain area of the side wall can be set to be transparent material, and the remaining area can be provided with a decorative layer for decorating the side of the pot cover 1.

[0111] Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0112] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0113] The above description is merely an 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 the claims of the present invention.

Claims

1. A vent-free pressure cooking device comprising a pot body and a pot lid covering the pot body, wherein the pot lid is provided with a cooling cavity, and further comprising a water tank provided in the pot lid, wherein the water tank is in communication with the cooling cavity, wherein: The water tank has a first water storage area, a second water storage area, and a dividing rib inside. The dividing rib forms an exhaust channel between the first water storage area and the second water storage area. The pot lid is also provided with an exhaust assembly, which is connected to the exhaust channel. The first water storage area is provided with a water outlet, and the second water storage area is provided with a return water outlet.

2. The exhaust-free pressure cooking device according to claim 1, characterized in that: A flow gap is provided between the dividing rib and the inner wall of the water tank, and the first water storage area and the second water storage area are communicated with each other through the flow gap.

3. The exhaust-free pressure cooking appliance according to claim 1, wherein: The pot cover includes a surface cover and a lining cover located on the lower side of the surface cover. A cover plate is provided between the water tank and the lining cover. The cover plate has a positioning groove that cooperates with the water tank. Through holes are provided in the positioning groove corresponding to the water outlet and the water return port. The water outlet and the water return port are connected to the cooling chamber through the through holes.

4. The exhaust-free pressure cooking appliance according to claim 1, wherein: The water tank is detachably fixed to the pot cover, and water flow switches are provided at the water outlet and the water return port. The pot cover is provided with trigger members corresponding to the water outlet and the water return port. When the water tank is installed to the pot cover, the trigger member pushes the water flow switch to open the water outlet and the water return port.

5. The exhaust-free pressure cooking appliance according to claim 4, characterized in that: The top surface of the water tank is also provided with a vent hole, and a sealing valve is provided at the vent hole. At least one water flow switch cooperates with the sealing valve so that when the water flow switch is driven by the trigger member, it drives the sealing valve to move to open the vent hole.

6. The exhaust-free pressure cooking device according to claim 1, characterized in that: The exhaust-free pressure cooking appliance also includes a sealing member. The water tank is provided with a water inlet. The sealing member can move relative to the water tank to open or close the water inlet. A limiting rib is provided inside the water inlet, and the limiting rib can cooperate with the sealing member stopper.

7. The exhaust-free pressure cooking appliance according to claim 1, wherein: The pot cover includes a lining cover and an inner cover, and the exhaust assembly includes a pressure relief valve and a float valve arranged on the inner cover, the pressure relief valve extends into the exhaust channel, and the float valve is located on one side of the water tank and is connected to the exhaust channel; the pressure relief valve includes an exhaust pipe, and the lining cover is provided with an air outlet connected to the float valve, and a mounting port for the exhaust pipe to extend, and the height of the air outlet is higher than the height of the mounting port.

8. The exhaust-free pressure cooking appliance according to claim 1, wherein: The water tank protrudes from the top surface of the pot cover; or, The top surface of the pot cover has a decorative area and an installation area, the installation area is lower than the decorative area, and the water tank is arranged in the installation area so that the top surface of the water tank is flush with the top surface of the decorative area.

9. The exhaust-free pressure cooking appliance according to claim 8, characterized in that: The installation area extends to the edge of the pot cover, the top surface of the water tank is provided with a decorative layer, the side wall of the water tank is exposed from the pot cover, and the side wall of the water tank has a visible area.

10. The exhaust-free pressure cooking device according to any one of claims 1 to 9, characterized in that: The water tank includes a tank body and a tank cover. The tank cover covers the tank body. The tank cover has an exhaust area corresponding to the exhaust channel. The exhaust area is provided with an exhaust port.

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