A water-cooled pressure cooking appliance

Abstract

This utility model discloses a water-cooled pressure cooking appliance, including a pot body and a pot lid. The pot lid is provided with a water-cooling cavity. The water-cooled pressure cooking appliance also includes a water tank detachably installed on the pot body or the pot lid. The bottom wall of the water tank is provided with a connecting port, which communicates with the water-cooling cavity. When the water tank is removed, coolant can be added to the water tank through the connecting port. The water tank is also provided with a baffle wall protruding towards the inside of the water tank, surrounding the outer periphery of the connecting port. When the water tank is inverted, as the user adds coolant to the water tank, the liquid level in the water tank gradually rises until it contacts the baffle wall. At this time, the coolant and the baffle wall form a water seal, and some air is trapped in the cavity area. The coolant does not completely fill the cavity area, thus strictly controlling the amount of coolant in the water tank. Furthermore, when the heated coolant flows back into the water tank, the risk of coolant overflowing from the vent is reduced because the coolant is far from the vent.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a water-cooled pressure cooking appliance. Background Technology

[0002] Water-cooled pressure cooking appliances typically have a water-cooling chamber in the lid and a water tank for storing coolant. During the water-cooling depressurization process, the coolant in the water tank flows into the cooling chamber, exchanges heat, and then flows back into the water tank, thus circulating repeatedly.

[0003] To facilitate the replenishment of coolant (usually water) into the water tank, it is typically designed to be detachable from the cooking appliance. Users add water through the inlet after removing the tank. However, although water tanks usually have a maximum water level indicator, the actual amount of water added is often determined by the user, frequently resulting in the tank being overfilled. This leads to several problems: firstly, water overflows, causing spillage and waste; secondly, because the heated water returns to the tank, its higher temperature causes pressure buildup when steam is generated. The pressure difference between the inside and outside of the tank causes water to overflow from the vent, contaminating the surface of the pressure cooker and potentially flowing into the lid or inside the pot, increasing the risk of damage to internal electrical components.

[0004] Furthermore, after the water tank is installed on the pressure cooking appliance, the water level detection device in the tank will monitor the water level in real time during the water cooling and depressurization process. The water level detection device is usually a float and a reed switch. When the float is lower than the minimum water level, it triggers the reed switch, at which point the machine issues an alarm to stop the water pump in time to prevent damage and excessive noise caused by dry running. However, the hardware cost of the float and reed switch detection device is relatively high, and the signal is issued with a delay. Often, the water level in the tank is very low or even empty before the water shortage alarm is issued. Utility Model Content

[0005] This utility model provides a water-cooled pressure cooking appliance to solve the problems of existing water tanks not being able to effectively limit the amount of water added by users, which easily leads to overfilling and coolant overflow during the cooling process, as well as the high cost of water level detection, slow detection signal, and water pump running dry during operation.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A water-cooled pressure cooking appliance includes a pot body and a pot lid. The pot lid is provided with a water-cooling cavity. The water-cooled pressure cooking appliance also includes a water tank that is detachably installed on the pot body or the pot lid. The bottom wall of the water tank is provided with a connecting port that communicates with the water-cooling cavity. When the water tank is removed, coolant can be added to the inside of the water tank through the connecting port. The bottom wall of the water tank is also provided with a baffle wall that protrudes toward the inside of the water tank and surrounds the outer periphery of the connecting port.

[0008] In this invention, the connecting port of the water tank serves both as a fill port for the user to add coolant when the water tank is removed, and as an outlet port for connecting with the water-cooling cavity after the water tank is installed. This allows a single connecting port to serve multiple functions, simplifying the water tank structure, reducing the number of openings, lowering manufacturing difficulty, and also reducing sealing difficulty and the risk of coolant leakage.

[0009] Specifically, since the connection port is located on the bottom wall of the water tank, users need to invert the water tank when removing it to add coolant. With the water tank inverted, the connection port is at the top of the tank, and the enclosure extends downwards, forming a water-filling area on the inner side of the enclosure and a cavity area on the outer perimeter. When the coolant level in the tank is lower than the enclosure, the water-filling area and the cavity area are connected. As the user adds coolant to the water tank, the liquid level gradually rises until it contacts the enclosure wall. At this point, the coolant forms a water seal with the enclosure wall, isolating the water filling area from the cavity area. Some air is trapped in the cavity area. Because air has a certain volume, even if the user continues to add coolant to the connection port (i.e., the water filling area), the coolant will not completely fill the cavity area. This strictly controls the amount of coolant in the water tank, preventing the user from accidentally overfilling the tank. After the water tank is installed in the pressure cooking appliance, there is always a certain space between the liquid level and the vent at the top of the tank. When the heated coolant flows back into the water tank, the generated steam will be briefly stored in this space and eventually discharged through the vent. During the steam discharge process, because the coolant is far from the vent, the risk of coolant overflowing from the vent is reduced.

[0010] Furthermore, when the water tank is installed in the pressure cooking appliance (i.e., in the upright position), the connection port is located on the bottom wall of the tank, and the enclosure extends upwards from the bottom wall. When there is sufficient coolant in the tank, the coolant flows between the inside and outside of the enclosure. As the coolant level gradually decreases until it drops below the enclosure, the coolant on the inside and outside of the enclosure is isolated, preventing the water pump from drawing in coolant outside the enclosure. This structural design automatically limits the minimum water level in the tank, eliminating the need for additional floats, reed switches, or other level detection devices. This simplifies the internal structure of the tank and saves costs. Moreover, when the water pump current is low, it indicates a water shortage and stops the pump. Even then, a significant amount of coolant remains stored outside the enclosure, which can be used for water cooling and pressure reduction. This allows the pump to stop earlier, reducing the risk of prolonged idling due to severe water shortage. This not only reduces noise from the pump running dry but also helps extend its lifespan.

[0011] The bottom wall of the water tank is provided with a recessed clearance channel facing the inside of the water tank, and the connection port is opened in the clearance channel. The enclosure wall extends upward from the top of the clearance channel.

[0012] In this design, by incorporating a clearance trough into the bottom wall of the water tank, a portion of the tank's bottom wall is recessed inwards. The enclosure wall is positioned within this trough, further increasing its height and reducing the distance between the enclosure wall and the top wall of the water tank. When the water tank is inverted for coolant replenishment, the coolant surface contacts the enclosure wall earlier to form a liquid seal, further lowering the maximum coolant level. While ensuring the coolant meets the water-cooling pressure reduction requirements, the increased distance between the coolant surface and the top vent when the tank is upright further increases steam storage capacity and reduces the risk of coolant overflow. During operation, the higher enclosure wall isolates the coolant on its inner and outer sides earlier, raising the minimum coolant level. This ensures that when the water pump responds to a water shortage, more coolant is stored in the tank, further advancing the pump's response time and reducing the possibility of idling.

[0013] In addition, when the water tank is installed in the pressure cooking appliance, the docking seat connects with the connecting port. The avoidance groove can also avoid the docking seat, so that the docking seat is at least partially accommodated in the avoidance groove, thereby improving the structural compactness and making the water tank fit the pressure cooking appliance better without excessively protruding or warping, thus improving the appearance quality.

[0014] The water-cooled pressure cooking appliance also includes a lid, which is located in the relief trough and can move relative to the water tank to open or close the connection port. The lid has a corresponding interface for the connection port, and a water outlet switch is provided at the interface. The water outlet switch can move relative to the lid to open or close the interface.

[0015] In this design, when adding coolant to the water tank, the tank needs to be inverted so that the connection port is at the top. After adding coolant, the tank is flipped over and installed onto the pressure cooker. Therefore, to prevent coolant leakage after the tank is flipped, a cover is installed at the connection port, allowing the user to close it after adding coolant. The water outlet switch not only seals the interface (which is also the connection port), but also opens the interface when the tank is installed on the pressure cooker, allowing communication between the tank and the water-cooling chamber. Simultaneously, the recessed area provides space for the cover to be installed, allowing it to be retracted into the recessed area without protruding from the tank, thus preventing the tank from tilting up after installation.

[0016] The top wall of the water tank is provided with an installation port, and a sealing element is provided at the installation port. The sealing element has a vent, and the sealing element can deform and move under the action of air pressure difference to open or close the vent.

[0017] In existing technologies, vents are typically always open. If the water tank is located on the surface of a pressure cooker, external dust and food residue can enter the tank through the vent, posing a risk of clogging the water cooling pipes. Over time, this can also cause the coolant inside the tank to deteriorate, breed bacteria, and emit unpleasant odors, negatively impacting the user experience. In this solution, a seal is installed at the mounting opening on the top wall of the water tank. This seal can deform to allow the vent to open and close, keeping it normally closed. The vent only opens to allow air to enter or exit when there is a sufficient pressure difference between the inside and outside of the tank, restoring pressure balance. This ensures proper ventilation while preventing the entry of dust and impurities, maintaining the cleanliness of the water tank's interior.

[0018] The seal has at least two elastic flaps, each flap having a connecting end and a free end. The free ends are separated from each other to form a vent, and the free ends abut against each other to close the vent.

[0019] In this design, the free ends of the elastic diaphragm flaps are stacked to seal the vent. When pushed by airflow, the elastic diaphragm flaps swing around the connecting end, causing the free ends to open and the vent to open. This not only provides a certain degree of sealing, but also allows for forward or reverse opening under certain forward or reverse pressure, making it more flexible and easier to control.

[0020] The sealing element includes a deformable part and a fixing part surrounding the outer periphery of the deformable part. The fixing part is provided with a snap-fit ​​groove, and the edge of the mounting port is fixed in conjunction with the snap-fit ​​groove. The vent is provided in the deformable part, which protrudes towards the inside of the water tank, and the thickness of the deformable part is less than the thickness of the fixing part.

[0021] In this design, the seal is fixed by engaging with the edge of the mounting port via a snap-fit ​​groove, making installation simpler and more convenient while ensuring a tight seal at the connection and preventing coolant leakage. The thinner deformation section allows it to deform more easily under airflow, and the protruding deformation section also provides allowance for deformation, reducing the pulling force on the surrounding fixing part when the deformation section deforms, thus ensuring a stable connection between the fixing part and the water tank.

[0022] The water tank is equipped with a disinfection component. The top or side wall of the water tank is provided with pressing ribs that extend toward the bottom wall. The pressing ribs clamp and fix the disinfection component to the bottom wall of the water tank.

[0023] In this solution, the disinfection component is immersed in the coolant inside the water tank, which disinfects and inhibits bacteria in the coolant. Since the coolant can be recycled for a long time, unless the coolant level is low, users generally do not need to change or top up the coolant before each cooking session. Therefore, prolonged storage can easily lead to bacterial growth and unpleasant odors. The disinfection component ensures the cleanliness of the cleaning solution and reduces bacterial growth. The clamping and fixing method ensures both contact between the disinfection component and the coolant, while also securing the component, making the fixing process simpler.

[0024] The bottom wall of the water tank is provided with a limiting rib, which forms an installation position for accommodating the sterilization component. The limiting rib has a connecting channel connecting the inner and outer sides. The water-cooled pressure cooking appliance also includes a leak-proof component, which is placed on the installation position. The pressing rib presses the sterilization component through the leak-proof component.

[0025] In this design, the limiting ribs form an installation position on the bottom wall of the water tank. The disinfection component is placed within this position, and the limiting ribs have a connecting channel, allowing the coolant on their outer side to also enter the installation position and contact the disinfection component, thus improving the disinfection effect. The leak-proof cover seals the installation position, further enhancing the pressing effect of the pressing ribs on the disinfection component, firmly securing it within the installation position and preventing it from slipping out.

[0026] The leak-proof component has water-permeable mesh holes, and at least some of the water-permeable mesh holes are staggered vertically with the pressing ribs.

[0027] In this design, the leak-proof component has water-passing mesh holes, allowing coolant to enter the installation position from above the sterilization component and come into contact with it. This ensures that the sterilization component's sides and top are in contact with coolant, increasing the contact area and improving the sterilization effect. The water-passing mesh holes are staggered vertically with the pressing ribs to prevent the pressing ribs from clogging the water-passing mesh holes, allowing coolant to pass through smoothly.

[0028] The upper surface of the pot lid is provided with a downwardly recessed mounting groove, and the water tank is detachably installed in the mounting groove so that the upper surface of the water tank constitutes at least part of the appearance surface of the top of the pot lid.

[0029] In this design, the water tank is positioned on the boiler lid. This brings the water tank closer to the water-cooling chamber, shortening the length of the water-cooling piping, saving costs, and improving the efficiency of coolant circulation and water cooling. Furthermore, the water tank's location on the upper surface of the boiler lid facilitates user disassembly and installation, allows for easy visualization of the coolant level, and ensures a unified appearance between the water tank and the boiler lid, enhancing the overall aesthetic appeal. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0031] Figure 1 This is an exploded view of the pot lid according to one embodiment of the present invention;

[0032] Figure 2 This is a cross-sectional view of the pot lid according to one embodiment of the present invention;

[0033] Figure 3 for Figure 2 A magnified view of area A in the middle;

[0034] Figure 4 This is a cross-sectional view of the water tank in an inverted state according to one embodiment of the present invention;

[0035] Figure 5 This is a cross-sectional view of the water tank in an upright position according to one embodiment of the present invention;

[0036] Figure 6 This is a cross-sectional view of the sealing element according to one embodiment of the present invention;

[0037] Figure 7 This is a cross-sectional view of a portion of the water tank according to one embodiment of the present invention;

[0038] Figure 8 for Figure 7 A magnified view of area B in the middle;

[0039] Figure 9 This is a schematic diagram of the structure of the leak-proof component according to one embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the bottom shell structure according to one embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram of the upper shell structure according to one embodiment of the present invention.

[0042] in:

[0043] 1. Pot lid; 11. Install the settling tank;

[0044] 2. Water tank; 21. Upper shell; 22. Bottom shell; 23. Connecting port; 24. Enclosure wall; 241. Water filling area; 242. Cavity area; 25. Clearance trough; 26. Mounting port; 27. Pressing rib; 28. Limiting rib; 281. Connecting channel; 282. Mounting position;

[0045] 3. Sealing element; 31. Fixing part; 311. Snap-fit ​​groove; 32. Deformation part;

[0046] 4. Disinfected items;

[0047] 5 docking seats;

[0048] 6. Cover; 61. Interface; 62. Water outlet switch;

[0049] 7 Leak-proof parts; 71 Water-passing mesh; 72 Covering parts; 73 Support feet. Detailed Implementation

[0050] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0051] Many specific details are set forth in the following description in order to provide 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.

[0052] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] like Figures 1 to 3 As shown, a water-cooled pressure cooking appliance includes a pot body and a pot lid 1. The pot lid 1 is provided with a water-cooling cavity. The water-cooled pressure cooking appliance also includes a water tank 2 that is detachably installed on the pot body or the pot lid 1. The bottom wall of the water tank 2 is provided with a connecting port 23, which communicates with the water-cooling cavity. When the water tank 2 is removed, coolant can be added to the inside of the water tank 2 through the connecting port 23. The bottom wall of the water tank 2 is also provided with a baffle wall 24 that protrudes toward the inside of the water tank 2 and surrounds the outer periphery of the connecting port 23.

[0056] It should be noted that this utility model does not limit the formation method of the water-cooling cavity. In one embodiment, the pot lid 1 is provided with a water-cooling component, which extends into the cooking cavity below the pot lid 1, and the water-cooling cavity is located inside the water-cooling component. In another embodiment, the pot lid 1 includes a metal inner lid, at least a portion of which fits to form the water-cooling cavity. For example, the metal inner lid can be designed as a double-layer structure, with the water-cooling cavity formed between the two layers, or an additional water-cooling component can be used to fit with the metal inner lid to form the water-cooling cavity.

[0057] It should also be noted that in this utility model, the top wall and bottom wall of the water tank 2 are the top and bottom walls corresponding to the state of the water tank 2 when it is installed in the pressure cooking appliance, that is, the state of the water tank 2 in the upright position.

[0058] In this invention, the connecting port 23 of the water tank 2 serves both as a fill port for the user to add coolant to the water tank 2 when it is removed, and as a drain port for the water tank 2 to connect with the water-cooling cavity after installation. This allows a single connecting port 23 to perform multiple functions, simplifying the structure of the water tank 2, reducing the number of openings, lowering manufacturing difficulty, and also reducing sealing difficulty and the risk of coolant leakage.

[0059] Specifically, since the connecting port 23 is located on the bottom wall of the water tank 2, the user needs to invert the water tank 2 when removing it to add coolant. For example... Figure 4 As shown, when the water tank 2 is inverted, the connecting port 23 is located at the top of the water tank 2, and the enclosure wall 24 extends downward, thereby forming a water injection area 241 on the inner side of the enclosure wall 24 and a cavity area 242 on the outer periphery of the enclosure wall 24. When the liquid level in the water tank 2 is lower than the enclosure wall 24, the air in the water injection area 241 and the cavity area 242 are connected.

[0060] As the user adds coolant to the water tank 2, the liquid level in the water tank 2 gradually rises until it contacts the enclosure wall 24. At this point, the coolant and the enclosure wall 24 form a water seal, isolating the air in the water injection area 241 and the cavity area 242. Some air is sealed in the cavity area 242. Since air has a certain volume, even if the user continues to add coolant to the connecting port 23, that is, the water injection area 241, the coolant will not completely fill the cavity area 242. This strictly controls the amount of coolant in the water tank 2, preventing the user from accidentally filling the water tank 2 to the point of overfilling. After the water tank 2 is installed in the pressure cooking appliance, there is always a certain space between the liquid level and the vent at the top of the water tank 2. When the heated coolant flows back into the water tank 2, the generated steam will be stored in this space for a short time and eventually discharged through the vent. During the steam discharge process, since the coolant is far from the vent, the risk of coolant overflowing from the vent is reduced.

[0061] Furthermore, when the water tank 2 is installed in the pressure cooking appliance, i.e., when the water tank 2 is upright, the connecting port 23 is located on the bottom wall of the water tank 2, and the enclosure wall 24 extends upward from the bottom wall. For example... Figure 3As shown, when the coolant in water tank 2 is sufficient, the coolant is connected to both the inner and outer sides of the enclosure wall 24. As the coolant in water tank 2 gradually decreases until the liquid level drops below the enclosure wall 24, the coolant on both the inner and outer sides of the enclosure wall 24 is isolated. The coolant outside the enclosure wall 24 cannot be drawn into the water pump. Thus, the structural design automatically limits the minimum water level in water tank 2 without the need for additional floats, reed switches, or other level detection devices. This simplifies the internal structure of water tank 2 and saves costs. Furthermore, when the water pump current is low, it can be determined as a water shortage state, and the water pump can be stopped. At this time, a significant amount of coolant remains stored in the area outside the enclosure wall 24, which can be used for water cooling and pressure reduction. This allows the water pump to stop earlier, reducing the possibility of prolonged idling due to severe water shortage in water tank 2. This not only reduces the noise generated by the water pump running dry but also helps ensure the pump's service life.

[0062] Specifically, when water tank 2 is installed on a pressure cooking appliance, the connecting port 23 is connected to a water pump, and the pump inlet of the water pump is connected to the water-cooling cavity, so that coolant is pumped into the water-cooling cavity through the connecting port 23. The outlet of the water-cooling cavity is connected to water tank 2. Specifically, a return water inlet can be opened in water tank 2, and the return water inlet is connected to the outlet.

[0063] Specifically, the maximum water storage capacity of the water tank 2 and the minimum water level that triggers the water pump idling alarm can be adjusted by designing the protrusion height of the enclosure wall 24.

[0064] As a preferred embodiment of this utility model, such as Figure 3 , Figure 4 , Figure 7 As shown, the bottom wall of the water tank 2 is provided with a recessed relief trough 25 facing the interior of the water tank 2, the connecting port 23 is opened in the relief trough 25, and the enclosure wall 24 extends upward from the top of the relief trough 25.

[0065] By setting an avoidance groove 25 on the bottom wall of water tank 2, a portion of the bottom wall of water tank 2 is recessed towards the interior of water tank 2, and the enclosure wall 24 is positioned within the avoidance groove 25, the height of the enclosure wall 24 is further increased to some extent, thus reducing the distance between the enclosure wall 24 and the top wall of water tank 2. When water tank 2 is inverted and coolant is being added, the coolant surface can contact the enclosure wall 24 earlier to form a liquid seal, thereby further reducing the maximum coolant level reached by water tank 2.

[0066] While ensuring the coolant meets the water-cooled pressure reduction requirements, the distance between the liquid level and the top vent is increased when the water tank 2 is upright, thereby further increasing the steam storage capacity and reducing the risk of coolant overflow. During operation, due to the relatively high height of the enclosure wall 24, the coolant can be isolated earlier on its inner and outer sides, raising the minimum liquid level position of the water tank 2. This means that when the water pump responds to a water shortage, the water tank 2 contains more coolant, further advancing the water pump's response time and reducing the possibility of the water pump running dry.

[0067] In addition, when the water tank 2 is installed in the pressure cooking appliance, the docking seat 5 is connected to the connecting port 23. The avoidance groove 25 can also avoid the docking seat 5, so that the docking seat 5 is at least partially accommodated in the avoidance groove 25, thereby improving the structural compactness, making the water tank 2 fit the pressure cooking appliance better, without excessively protruding or warping, and improving the appearance quality.

[0068] Furthermore, such as Figure 3 , Figure 4 , Figure 7 As shown, the water-cooled pressure cooking appliance also includes a cover 6, which is disposed in the relief trough 25 and can move relative to the water tank 2 to open or close the connecting port 23. The cover 6 has a corresponding interface 61 for the connecting port 23, and a water outlet switch 62 is provided at the interface 61. The water outlet switch 62 can move relative to the cover 6 to open or close the interface 61.

[0069] When adding coolant to water tank 2, the user needs to invert water tank 2 so that the connecting port 23 is at the top of water tank 2. After adding coolant, water tank 2 is flipped over and installed on the pressure cooker. Therefore, to prevent coolant leakage after water tank 2 is flipped over, a cover 6 is provided at the connecting port 23 so that the user can close the connecting port 23 after adding coolant. The water outlet switch 62 not only seals the interface 61 (which is also the connecting port 23), but also opens the interface 61 when water tank 2 is installed on the pressure cooker by the pushing action of the docking seat 5, thus connecting water tank 2 and the water cooling chamber. At the same time, the clearance groove 25 also provides space for the installation of the cover 6, allowing the cover 6 to be stored inside the clearance groove 25 without protruding from water tank 2, thus preventing water tank 2 from tilting up after installation.

[0070] Specifically, in one embodiment, such as Figure 4As shown, one end of the cover 6 is rotatably connected to the side wall of the clearance trough 25, allowing the cover 6 to rotate relative to the water tank 2 to open or close the connection port 23. In other embodiments, the cover 6 can also open and close the connection port 23 in other ways. For example, the cover 6 can be designed to be removable from the water tank 2, allowing coolant to be added to the water tank 2, and then the cover 6 can be inserted into the connection port 23 to seal it. Alternatively, the cover 6 can be designed to slide open and close the connection port 23; this is not limited to any particular design.

[0071] like Figure 3 , Figure 7 As shown, one end of the water outlet switch 62 is equipped with a sealing ring. Under the action of the elastic element, the water outlet switch 62 causes the sealing ring to abut against the wall of the cover 6, sealing the interface 61. When the water tank 2 is installed on the pressure cooking appliance, the docking seat 5 pushes against the water outlet switch 62, causing the sealing ring to disengage from the wall of the cover 6, opening the interface 61.

[0072] As a preferred embodiment of this utility model, such as Figure 5 As shown, the top wall of the water tank 2 is provided with an installation port 26, and a sealing element 3 is provided at the installation port 26. The sealing element 3 has a vent, and the sealing element 3 can deform and move under the action of air pressure difference to open or close the vent.

[0073] When the water pump operates, it draws coolant from water tank 2 into the water-cooling chamber, creating a negative pressure environment within water tank 2. When the cooled coolant returns to water tank 2 after heat exchange, its higher temperature causes an increase in air pressure within water tank 2. Whether under high or negative pressure, if water tank 2 is isolated from the outside environment, the circulation efficiency of the coolant within water tank 2 and the water-cooling chamber will decrease. Therefore, water tank 2 is often equipped with a vent to allow air to flow between the inside of water tank 2 and the outside, maintaining pressure balance between the inside and outside atmospheres.

[0074] In existing technologies, the vent is generally always open. If the water tank 2 is located on the surface of the pressure cooking appliance, external dust and food residue will enter the water tank 2 through the vent. This not only poses a risk of clogging the water cooling pipes, but also causes the coolant in the water tank 2 to deteriorate over time, producing bacteria and emitting odors, thus affecting the user experience.

[0075] In this embodiment, a sealing element 3 is provided at the mounting port 26 on the top wall of the water tank 2. The sealing element 3 can deform and move to allow the vent to be in an open or closed state. The vent is normally closed and is only opened to allow air to be released or introduced when there is a sufficient pressure difference between the inside and outside of the water tank 2, so that the pressure inside and outside the water tank 2 can be restored to balance. While ensuring the ventilation function, it also prevents dust and impurities from entering, ensuring the cleanliness of the inside of the water tank 2.

[0076] Specifically, the seal 3 has at least two elastic flaps, each having a connecting end and a free end. The free ends are separated from each other to form a vent, and the free ends abut against each other to close the vent.

[0077] The free ends of the elastic diaphragm flaps stack together to seal the vent. When pushed by airflow, the elastic diaphragm flaps swing around the connecting end, causing the free ends to open and open the vent. This not only gives it a certain degree of sealing, but also allows it to open in the forward or reverse direction under certain forward or reverse pressure, making it more flexible and easier to control.

[0078] In one embodiment, there are two elastic flaps, so that the free ends of the two elastic films form a straight cut. In another embodiment, there are four elastic flaps, so that the free ends of the four elastic flaps form a cross-shaped cut. Of course, in other embodiments, the number of elastic flaps may be more than one, and this is not limited here.

[0079] Preferably, such as Figure 6 As shown, the sealing element 3 includes a deformable part 32 and a fixing part 31 surrounding the outer periphery of the deformable part 32. The fixing part 31 is provided with a snap-fit ​​groove 311. The edge of the mounting port 26 is fixed in conjunction with the snap-fit ​​groove 311. The vent is provided in the deformable part 32. The deformable part 32 protrudes towards the inside of the water tank 2, and the thickness of the deformable part 32 is less than the thickness of the fixing part 31.

[0080] The seal 3 is fixed by engaging with the edge of the mounting port 26 via the snap-fit ​​groove 311, making the installation of the seal 3 simpler and more convenient, and ensuring the sealing of the connection to prevent coolant leakage. The deformation part 32 is thinner, making it easier to deform under the push of airflow, and the protruding deformation part 32 also provides a margin for deformation, reducing the pulling force on the peripheral fixing part 31 when the deformation part 32 deforms, and ensuring a stable connection between the fixing part 31 and the water tank 2.

[0081] Specifically, when the air pressure inside water tank 2 is higher than the external atmospheric pressure, the deformation part 32 bulges outward under the action of air pressure, pushing the elastic diaphragm flap outward to open the vent. When the air pressure inside water tank 2 is lower than the external atmospheric pressure, the deformation part 32 is pushed inward into water tank 2, and the elastic diaphragm flap deforms inward to open the vent.

[0082] As a preferred embodiment of this utility model, such as Figure 1 , Figure 7 , Figure 8 As shown, a disinfection component 4 is installed inside the water tank 2. A pressing rib 27 extending toward the bottom wall is provided on the top wall or side wall of the water tank 2. The pressing rib 27 clamps and fixes the disinfection component 4 with the bottom wall of the water tank 2.

[0083] The disinfection component 4 is immersed in the coolant inside the water tank 2, which can disinfect and inhibit bacteria in the coolant. Since the coolant can be recycled for a long time, unless the coolant level is low, users generally do not need to change or add coolant before each cooking session. Therefore, bacteria can easily grow and produce odors after long-term storage. The disinfection component 4 can keep the cleaning solution clean at all times and reduce bacterial growth.

[0084] By using a clamping and fixing method, it is ensured that the disinfection component 4 can come into contact with the coolant, and the disinfection component 4 is fixed, making the fixing method of the disinfection component 4 simpler.

[0085] The inclusion of a sterilization component 4 for coolant sterilization allows users greater flexibility in replenishing and replacing the coolant. Since the coolant only flows within water tank 2 and the water-cooling chamber, avoiding contact with the pot's internal environment, it is less prone to contamination. Losses are limited to some coolant evaporation due to heat. Therefore, a single coolant top-up can be used for water-cooling pressure reduction after multiple cooking sessions, eliminating the need for replenishment before each cooking session. Replenishment should only be performed after the coolant level in water tank 2 has fallen below the containment wall 24.

[0086] Furthermore, such as Figure 1 , Figure 8 As shown, the bottom wall of the water tank 2 is provided with a limiting rib 28, which forms an installation position 282 for accommodating the sterilization component 4. The limiting rib 28 has a connecting channel 281 connecting the inner and outer sides. The water-cooled pressure cooking appliance also includes a leak-proof component 7, which covers the installation position 282. The pressing rib 27 presses the sterilization component 4 through the leak-proof component 7.

[0087] The limiting rib 28 forms an installation position 282 on the bottom wall of the water tank 2. The disinfection component 4 is placed inside the installation position 282, and the limiting rib 28 has a connecting channel 281, allowing the coolant on its outside to also enter the installation position 282 and contact the disinfection component 4, thus improving the disinfection effect. The leak-proof component 7 covers the installation position 282, which can further improve the pressing effect of the pressing rib 27 on the disinfection component 4, firmly confining the disinfection component 4 inside the installation position 282, especially after the volume of the disinfection component 4 dissolves and decreases, it will not slip out of the installation position 282.

[0088] Specifically, such as Figure 8 As shown, the limiting rib 28 is composed of multiple discontinuous segments along the circumferential direction, forming a connecting channel 281 between adjacent segments. Of course, holes can also be made in the limiting rib 28 to form the connecting channel 281.

[0089] Furthermore, such as Figure 8 , Figure 9 As shown, the leak-proof component 7 has water-passing mesh holes 71, and at least some of the water-passing mesh holes 71 are vertically offset from the pressing ribs 27.

[0090] The leak-proof component 7 has water-passing mesh holes 71, allowing coolant to enter the mounting position 282 from above the disinfection component 4 and come into contact with it. This ensures that the disinfection component 4 is in contact with coolant on all sides and top, increasing the contact area and improving the disinfection effect. The water-passing mesh holes 71 are staggered vertically with the pressing rib 27 to prevent the pressing rib 27 from clogging the water-passing mesh holes 71, allowing coolant to pass through smoothly.

[0091] like Figure 8 , Figure 9 As shown, the leak-proof component 7 has a shielding portion 72 and a support foot 73 extending downward from the outer edge of the shielding portion 72. The shielding portion 72 cooperates with the bottom wall of the water tank 2 to form a limiting cavity for limiting the disinfection component 4. The support foot 73 can be inserted into the mounting position 282 so that the leak-proof component 7 and the limiting rib 28 can be precisely matched. A water-passing mesh 71 is provided in the shielding portion 72.

[0092] Specifically, such as Figure 8 , Figure 11 As shown, the pressing rib 27 has a T-shaped cross-section, so that the pressing rib 27 can not only press the leak-proof component 7, but also will not completely cover the shielding part 72. Of course, the pressing rib 27 can also be other shapes, or its pressing position on the leak-proof component 7 can be adjusted, such as pressing the center of the shielding part 72, so that the surrounding area of ​​the shielding part 72 can allow coolant to pass through the water-passing mesh 71, which is not limited here.

[0093] Preferably, such as Figure 1 , Figure 10 , Figure 11 As shown, the water tank 2 includes a bottom shell 22 and an upper shell 21, which are fixed together to form a cavity for holding coolant. A pressing rib 27 is provided on the upper shell 21, and a limiting rib 28 is provided on the bottom shell 22, so that when the upper shell 21 and bottom shell 22 are not installed, the mounting position 282 is open, facilitating the installation and replacement of the sterilization component 4. Alternatively, the water tank 2 can be designed as a one-piece molded structure.

[0094] In a preferred embodiment of this utility model, such as Figure 1 As shown, the upper surface of the pot lid 1 is provided with a downwardly recessed mounting groove 11, and the water tank 2 is detachably installed in the mounting groove 11 so that the upper surface of the water tank 2 constitutes at least part of the appearance surface of the top of the pot lid 1.

[0095] The water tank 2 is positioned on the lid 1. This design brings the water tank 2 closer to the water-cooling chamber, shortening the length of the water-cooling piping, saving costs, and improving the efficiency of coolant circulation and water cooling. Furthermore, the location of the water tank 2 on the upper surface of the lid 1 facilitates user disassembly and installation, allows for easy visualization of the coolant level within the water tank 2, and ensures a unified appearance between the water tank 2 and the lid 1, enhancing the overall aesthetic appeal.

[0096] Preferably, such as Figure 1 As shown, the mounting groove 11 extends laterally to the side edge of the pot lid 1, so that after the water tank 2 is installed, the side surface of the water tank 2 constitutes at least part of the exterior surface of the side of the pot lid 1. This allows the user to directly observe the liquid level in the water tank 2 from the side, and also facilitates the user in removing and placing the water tank 2.

[0097] In other embodiments, the water tank 2 may be located within the pot body; this is not a limitation.

[0098] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0099] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0100] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A water-cooled pressure cooking appliance, comprising a pot body and a pot lid, wherein the pot lid is provided with a water-cooling cavity, characterized in that, The water-cooled pressure cooking appliance also includes a water tank that is detachably installed on the pot body or the pot lid. The bottom wall of the water tank is provided with a communication port that communicates with the water-cooling cavity. When the water tank is removed, coolant can be added to the inside of the water tank through the communication port. The bottom wall of the water tank is also provided with a baffle wall that protrudes toward the inside of the water tank and surrounds the outer periphery of the communication port.

2. The water-cooled pressure cooking appliance according to claim 1, characterized in that, The bottom wall of the water tank is provided with a recessed avoidance groove facing the inside of the water tank, the communication port is opened in the avoidance groove, and the enclosure wall extends upward from the top of the avoidance groove.

3. The water-cooled pressure cooking appliance according to claim 2, characterized in that, The water-cooled pressure cooking appliance also includes a cover body, which is disposed in the clearance trough and can move relative to the water tank to open or close the communication port. The cover body has a corresponding interface to the communication port, and a water outlet switch is provided at the interface. The water outlet switch can move relative to the cover body to open or block the interface.

4. The water-cooled pressure cooking appliance according to claim 1, characterized in that, The top wall of the water tank is provided with an installation port, and a sealing element is provided at the installation port. The sealing element has a vent, and the sealing element can deform and move under the action of air pressure difference to open or close the vent.

5. The water-cooled pressure cooking appliance according to claim 4, characterized in that, The seal has at least two elastic flaps, each flap having a connecting end and a free end, the free ends being separated from each other to form the vent, and the free ends abutting against each other to close the vent.

6. The water-cooled pressure cooking appliance according to claim 4, characterized in that, The sealing element includes a deformable part and a fixing part surrounding the outer periphery of the deformable part. The fixing part is provided with a snap-fit ​​groove. The edge of the mounting port is fixed in conjunction with the snap-fit ​​groove. The vent is provided on the deformable part. The deformable part protrudes towards the inside of the water tank, and the thickness of the deformable part is less than the thickness of the fixing part.

7. The water-cooled pressure cooking appliance according to claim 1, characterized in that, The water tank is equipped with a disinfection component, and the top or side wall of the water tank is provided with a pressing rib extending toward the bottom wall. The pressing rib clamps and fixes the disinfection component to the bottom wall of the water tank.

8. The water-cooled pressure cooking appliance according to claim 7, characterized in that, The bottom wall of the water tank is provided with a limiting rib, which forms an installation position for accommodating the sterilization component. The limiting rib has a connecting channel connecting the inner and outer sides. The water-cooled pressure cooking appliance also includes a leak-proof component, which covers the installation position. The pressing rib presses the sterilization component through the leak-proof component.

9. The water-cooled pressure cooking appliance according to claim 8, characterized in that, The leak-proof component has water-permeable mesh holes, and at least some of the water-permeable mesh holes are vertically offset from the pressing ribs.

10. The water-cooled pressure cooking appliance according to claim 1, characterized in that, The upper surface of the pot lid is provided with a downwardly recessed mounting groove, and the water tank is detachably installed in the mounting groove so that the upper surface of the water tank constitutes at least part of the appearance surface of the top of the pot lid.

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