A pressure cooker

Abstract

The present invention relates to the technical field of pressure devices, and particularly relates to a pressure cooker. The pressure cooker includes: an inner pot; a heat conduction unit disposed at least partially in contact with the inner pot; a wind generating unit adapted to guide external air to flow through the heat conduction unit and discharge it through a heat dissipation air duct; and an exhaust valve disposed at least partially on the inner pot and adapted to selectively communicate with the heat dissipation air duct. The pressure cooker provided by the present invention uses the wind generating unit to guide external air to flow through the heat conduction unit, thereby accelerating the heat dissipation of the inner pot, quickly cooling the pressure cooker, and then reducing the pressure to a state equal to the external air pressure, facilitating the opening of the lid and reducing the waiting time.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure devices, and particularly relates to a pressure cooker. Background Art

[0002] During the cooking process of pressure cooker products, pressures exceeding 1 standard atmospheric pressure are set to increase the cooking temperature of the ingredients, thereby quickly cooking the ingredients thoroughly. However, after the cooking of the pressure cooker product is completed, it is necessary to wait for a long time for natural cooling until the pressure drops to a state equal to the external air pressure before the lid can be opened, and the waiting time is relatively long.

[0003] Conventional pressure cooker products generally open the pressure relief valve to shorten the pressure relief time. However, during pressure relief, violent boiling occurs inside the cooker, causing internal ingredient particles, soup, foam, etc. to be discharged to the outside of the product together with the high-pressure gas, resulting in troublesome cleaning for users or blocking the exhaust passage. Moreover, there are also certain safety hazards during the pressure relief process. In addition, some products in the prior art use a water cooling device to reduce the temperature of the cooker body, playing a role in accelerating cooling and thus speeding up the pressure reduction progress. However, the water cooling device is too complicated, making the entire rice cooker body heavy, consuming a large amount of electricity, and sacrificing space, bringing a lot of inconvenience to users.

[0004] On the other hand, when the pressure cooker finishes cooking, due to too much steam inside the pot, when opening the lid, condensed water will enter the food inside the pot, resulting in extremely poor cooking taste and reducing the user experience. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the pressure reduction device of the pressure cooker in the prior art has a large volume, so as to provide a pressure cooker that reduces the volume occupied by the pressure reduction device.

[0006] To solve the above technical problem, a pressure cooker provided by the present invention includes:

[0007] An inner pot;

[0008] A heat conduction unit, at least partially attached to the inner pot;

[0009] A wind generation unit, adapted to guide external air to flow through the heat conduction unit and be discharged via a heat dissipation air duct; and

[0010] An exhaust valve, at least partially disposed on the inner pot and adapted to selectively communicate with the heat dissipation air duct.

[0011] Specifically, the exhaust valve includes a first state in which the internal cavity of the inner pot is communicated with the outside; a second state in which the internal cavity of the inner pot and the heat dissipation air duct are simultaneously communicated with the outside; and a third state in which the internal cavity of the inner pot and the heat dissipation air duct are both shut off from the outside.

[0012] Specifically, the first end of the exhaust valve is directly or indirectly communicated with the internal cavity of the inner pot through a pressure relief port; the second end of the exhaust valve is provided with an exhaust through hole, and the pressure relief port is selectively communicated with the exhaust through hole.

[0013] Specifically, the exhaust valve is further provided with an air inlet, and the air inlet is selectively communicated with the heat dissipation air duct.

[0014] Specifically, the exhaust valve includes an exhaust inner wall and an exhaust outer wall which are movably connected. The first ends of the exhaust inner wall and the exhaust outer wall are both communicated with the internal cavity of the inner pot through the pressure relief port; inner window through holes and outer window through holes are respectively arranged at the second ends of the exhaust inner wall and the exhaust outer wall; the inner window through holes and the outer window through holes are adapted to be arranged opposite to each other in the first state and the second state, and are arranged in a staggered manner in the third state.

[0015] Specifically, inner window air inlets and outer window air inlets are respectively arranged on the exhaust inner wall and the exhaust outer wall; the outer window air inlet is communicated with the heat dissipation air duct, and the inner window air inlet is adapted to be arranged opposite to the outer window air inlet in the second state, and is arranged in a staggered manner with the outer window air inlet in the first state and the third state.

[0016] Specifically, the exhaust inner wall and the exhaust outer wall are sleeved and connected, and are adapted to rotate relative to each other to switch between the first state, the second state and the third state.

[0017] Specifically, the heat dissipation air duct includes: a wind guiding member, and the wind guiding member is adapted to guide the external air flowing through the heat conduction unit into the exhaust valve.

[0018] Specifically, the wind guiding member and the indentation cavity formed on the heat dissipation fins are symmetrically arranged with respect to the exhaust valve.

[0019] Specifically, the heat conduction unit includes heat dissipation fins, and the heat dissipation fins are composed of a plurality of fin pages arranged parallel to each other.

[0020] Specifically, the ratio of the fin height X of the heat dissipation fins to the gap Y between two adjacent fin pages is δ = X / Y, where 3 ≤ δ ≤ 5.

[0021] Specifically, the ratio of the fin height X of the heat dissipation fins to the gap Y between two adjacent fin pages is δ = X / Y = 4.

[0022] Specifically, the heat dissipation fins are arranged around the exhaust valve, and the fin pages form parallel rings.

[0023] Specifically, at least a part of the heat dissipation fins is formed with an indentation cavity, which is correspondingly arranged with the air generating unit, and the indentation cavity is adapted to shorten the air guiding path length of the heat dissipation fins.

[0024] Specifically, the heat dissipation fins are arranged in a fan shape around the exhaust valve, the fan angle of the heat dissipation fins is X, and the angle of the indentation cavity is Y, where Y = 360° - X and Y ≤ 180°.

[0025] Specifically, the pressure cooker further includes a flow dividing member, which is arranged at the downstream position of the air generating unit along the air flow path and is adapted to guide the air to both ends in the circumferential direction of the heat dissipation fins arranged in a fan shape.

[0026] Specifically, the flow dividing member is arranged in the indentation cavity.

[0027] Specifically, it further includes:

[0028] A cooker body,

[0029] A cooker lid, which is movably arranged on the cooker body;

[0030] When the cooker lid is in the open state, the angle between it and the horizontal plane is greater than 90 degrees, and a liquid collecting part is arranged at the lower position of the cooker lid along the gravity direction.

[0031] Specifically, a slideway is arranged on the outer surface of the cooker body, and the cooker lid is adapted to slide up and down along the slideway when in the open state.

[0032] Specifically, the cooker lid is detachably connected to the cooker body.

[0033] The technical solution of the present invention has the following advantages:

[0034] 1. For the pressure cooker provided by the present invention, by using the air generating unit to guide the external air to flow through the heat conducting unit, the heat dissipation of the inner pot is accelerated, so that the pressure cooker can be quickly cooled, and then the pressure is reduced to a state equal to the external air pressure, which is convenient for opening the lid and reduces the waiting time; an exhaust valve adapted to selectively communicate with the heat dissipation air duct is also arranged on the pressure cooker. In addition to being able to play a pressure relief role during the heating stage, it can also make the exhaust pressure relief channel communicate with the air-cooled heat dissipation air duct at the exhaust valve during the cooling stage, so that the exhaust valve can be shared, saving the space required for heat dissipation and making it possible to miniaturize the pressure cooker.

[0035] 2. The pressure cooker provided by the present invention enables the exhaust valve to switch between multiple states through the action change of the exhaust valve. During the heating stage, the internal cavity of the inner pot is communicated with the outside to ensure the pressure relief effect; during the cooling stage, the internal cavity of the inner pot and the heat dissipation air duct are simultaneously communicated with the outside, so that the exhaust valve can be shared; and after use, the exhaust valve is kept in a closed and conducting state to prevent dust from entering. It serves multiple purposes, enables the exhaust valve to switch different states according to different requirements of the working stage, improves the utilization efficiency of the exhaust valve, and saves the space required for heat dissipation.

[0036] 3. The pressure cooker provided by the present invention is provided with an air inlet on the exhaust valve and enables the air inlet to be selectively communicated with the heat dissipation air duct. Thus, in the conducting state, the air in the heat dissipation air duct can be discharged through the exhaust through hole provided at the second end of the exhaust valve, improving the heat dissipation effect of the pressure cooker, enhancing the utilization rate of the exhaust valve, and enabling the exhaust valve to be shared.

[0037] 4. For the pressure cooker provided by the present invention, the inner window through hole and the outer window through hole are adapted to be aligned in the first state and the second state of the exhaust valve, so as to conduct the second end of the exhaust valve, facilitating the communication between the internal cavity of the inner pot and the outside, or the simultaneous communication between the internal cavity of the inner pot and the heat dissipation air duct and the outside; the inner window through hole and the outer window through hole are adapted to be misaligned in the third state, so as to close the second end of the exhaust valve and prevent external dust from entering.

[0038] 5. For the pressure cooker provided by the present invention, the heat dissipation fins are designed parametrically. Combining the air duct layout and the structure form of the air inlet and outlet makes the overall heat dissipation noise reduced, the thermal resistance smaller, and the heat dissipation effect better.

[0039] 6. For the pressure cooker provided by the present invention, the exhaust valve is arranged at the middle position of the upper cover of the pressure cooker. The fin pages surround the exhaust valve and are preferably circular and parallel to each other with the exhaust valve as the center.

[0040] 7. For the pressure cooker provided by the present invention, at least part of the area of the heat dissipation fins is formed with an indentation cavity, and the air generating unit is arranged in the area of the indentation cavity, enabling the air to enter from both sides of the heat dissipation fins. On the one hand, it can leave a accommodating space for the air generating unit, and on the other hand, compared with the complete annular heat dissipation fins, it can shorten the air guiding path, so that the air at the end of the air guiding path will not be heated too high, thereby improving the heat dissipation efficiency and shortening the heat dissipation time.

[0041] 8. The pressure cooker provided by the present invention adopts fan-shaped heat dissipation fins and allows air to enter from both sides of the heat dissipation fins, reducing the air guiding path and greatly reducing the air duct resistance, thereby improving the heat dissipation efficiency and shortening the heat dissipation time.

[0042] 9. The pressure cooker provided by the present invention is provided with a flow divider at the downstream position of the air blowing unit along the air flow path, so that the air blown by the air blowing unit is respectively guided to both ends in the circumferential direction of the fan-shaped heat dissipation fins, splitting the air flow into two, shortening the length of the air guiding path on each side of the fan-shaped heat dissipation fins, having a shorter heat dissipation path, and converging at the end, playing a guiding role, avoiding random movement, improving the heat dissipation efficiency, and preventing the air flow from heating up too quickly.

[0043] 10. The pressure cooker provided by the present invention symmetrically arranges the air guiding member and the indentation cavity relative to the exhaust valve, so that the installation position of the air guiding member is exactly at the end of the double-sided air guiding paths of the fan-shaped heat dissipation fins, making rational use of cold air, having a more reasonable structural layout, fully ensuring the heat dissipation effect, avoiding excessive temperature on one side, achieving balanced heat dissipation, and further improving the overall heat dissipation efficiency.

[0044] 11. The pressure cooker provided by the present invention makes the angle between the lid and the horizontal plane greater than 90 degrees when the lid is in the open state, so as to prevent condensed water from condensing and flowing into the cooker during the lid opening process, and avoid the condensed water flowing into the cooker and affecting the taste of the food; part of the condensed water can be retained in the liquid collecting part inside the lid for collection, which is convenient for cleaning.

[0045] 12. The pressure cooker provided by the present invention is provided with a slideway on the outer surface of the cooker body, and the lid slides up and down along the slideway when in the open state, and the lid is detachably connected to the cooker body, so that part of the condensed water can be retained inside the lid for collection. When cleaning is required, the lid can be taken out, which is convenient for quickly cleaning the residual substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0047] Figure 1 is a schematic external view of the pressure cooker of the present invention;

[0048] Figure 2 is a sectional external view of the pressure cooker of the present invention;

[0049] Figure 3 is a top plan view of the pressure cooker of the present invention;

[0050] Figure 4 is a schematic view of the heat dissipation device of the present invention;

[0051] Figure 5 isFigure 4 Partial enlarged view in

[0052] Figure 6 Cross-sectional view of the pressure cooker of the present invention;

[0053] Figure 7 is Figure 6 Partial enlarged view in

[0054] Figure 8 Top view of the heat dissipation device of the present invention;

[0055] Figure 9 Top view of the heat dissipation fins of the present invention.

[0056] Description of reference numerals:

[0057] 10 - cooker body, 11 - cooker lid, 12 - slideway, 13 - relief hole, 14 - inner pot;

[0058] 21 - heat dissipation fins, 221 - flow dividing member, 22 - air generating unit, 23 - air guiding member, 24 - exhaust valve, 241 - exhaust outer wall, 242 - exhaust inner wall, 243 - outer window through hole, 244 - inner window through hole, 245 - outer window air inlet, 246 - inner window air inlet, 247 - pressure relief port, 25 - indentation cavity. Detailed implementation manners

[0059] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0060] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0062] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0063] Embodiment 1

[0064] Combined with Figures 1-9 As shown, the pressure cooker provided in this embodiment includes:

[0065] Inner pot 14;

[0066] A heat conduction unit, at least partially attached to the inner pot 14;

[0067] A wind generation unit 22, adapted to guide external air to flow through the heat conduction unit and discharge it through a heat dissipation air duct; and

[0068] An exhaust valve 24, at least partially disposed on the inner pot 14 and adapted to selectively communicate with the heat dissipation air duct.

[0069] Preferably, the heat conduction unit can specifically be a heat dissipation fin, a heat dissipation plate, or a heat dissipation pipe fitting. By attaching at least part of the heat conduction unit to the inner pot 14, the temperature of the inner pot 14 is conducted, increasing the heat dissipation area of the inner pot. Preferably, the heat conduction unit is made of a metal material to improve the heat conduction efficiency.

[0070] Preferably, the wind generation unit 22 in this embodiment can specifically be a blower, a fan, a negative pressure vacuum motor, etc., which are devices capable of guiding air to flow.

[0071] The pressure cooker mainly includes a heating stage for cooking food and a cooling stage after cooking is completed. When the cooling reaches a certain level and the pressure inside the pressure cooker is close to the atmospheric pressure, the user can safely open the pressure cooker.

[0072] Preferably, the exhaust valve 24 is at least partially disposed on the inner pot 14, and in a normal use state, it functions as a safety valve. During the process of cooking food in the pressure cooker, when the pressure inside the pot reaches the working pressure, since the working pressure is greater than the atmospheric pressure, the cooking process of the food is accelerated, and it is usually used to cook foods that are difficult to cook thoroughly. When the pressure inside the pot continues to rise, the exhaust valve 24 exhausts air through the exhaust hole to keep the pressure inside the pot within a certain range, achieving the purpose of pressure relief to ensure the safety of the pressure cooker.

[0073] In the pressure cooker provided in this embodiment, by using the air guiding unit 22 to guide external air to flow through the heat conducting unit, the heat dissipation of the inner pot is accelerated, so that the pressure cooker is quickly cooled, and then the pressure is reduced to a state equal to the external air pressure, which is convenient for opening the lid and reduces the waiting time; an exhaust valve 24 adapted to selectively communicate with the heat dissipation air duct is further provided on the pressure cooker. In addition to being able to relieve pressure during the heating stage, it can also make the exhaust pressure relief passage communicate with the air-cooled heat dissipation air duct at the exhaust valve 24 during the cooling stage, enabling the exhaust valve 24 to be shared, saving the space required for heat dissipation, and making it possible to miniaturize the pressure cooker.

[0074] Preferably, the pressure cooker uses an air-cooled form for heat dissipation. Compared with the water-cooled heat dissipation form, it can not only quickly complete pressure relief, but also does not require the user to do complicated and redundant water addition work, reducing user intervention and improving the user experience. In addition, it can also reduce the overall weight of the pressure cooker and reduce power consumption.

[0075] Specifically, the exhaust valve 24 includes a first state in which the internal cavity of the inner pot 14 is communicated with the outside; it also includes a second state in which the internal cavity of the inner pot 14 and the heat dissipation air duct are simultaneously communicated with the outside; and a third state in which the internal cavity of the inner pot 14 and the heat dissipation air duct are both shut off from the outside.

[0076] In the pressure cooker provided in this embodiment, through the action change of the exhaust valve 24, the exhaust valve 24 is switched between multiple states. During the heating stage, the internal cavity of the inner pot is communicated with the outside to ensure the pressure relief effect; during the cooling stage, the internal cavity of the inner pot and the heat dissipation air duct are simultaneously communicated with the outside so that the exhaust valve 24 can be shared; and after use, the exhaust valve 24 is kept in a shut-off state to prevent dust from entering. It serves multiple purposes, enabling the exhaust valve 24 to switch different states according to different needs of the working stage, improving the use efficiency of the exhaust valve 24, and saving the space required for heat dissipation.

[0077] Specifically, the first end of the exhaust valve 24 is directly or indirectly communicated with the internal cavity of the inner pot 14 through a pressure relief port 247; the second end of the exhaust valve 24 is provided with an exhaust through hole, and the pressure relief port 247 and the exhaust through hole are selectively communicated.

[0078] The exhaust through-hole provided at the second end of the exhaust valve 24 can be selectively opened or closed according to the working state. When the pressure is higher than the preset pressure of the exhaust valve 24, the exhaust through-hole is opened, and the gas in the pot is discharged from the first end of the exhaust valve 24 and discharged into the air from the second end of the exhaust valve 24. When the pressure cooker stops working, the exhaust through-hole provided at the second end of the exhaust valve 24 is closed, thus preventing dust from entering.

[0079] Preferably, a check valve is provided at the first end of the exhaust valve 24 at the pressure relief port 247, so that the internal cavity of the inner pot 14 can conduct outwardly but cannot conduct reversely, ensuring the cleanliness of the food in the inner pot.

[0080] The opening form of the exhaust through-hole provided at the second end of the exhaust valve 24 can be various, including automatic opening by power-on, opening according to pressure change, manual opening, etc. The specific structure of each opening form is easy to implement for those skilled in the art and will not be elaborated here.

[0081] Specifically, the exhaust valve 24 is further provided with an air inlet, and the air inlet is selectively communicated with the heat dissipation air duct.

[0082] Preferably, the air inlet is provided on the side wall of the exhaust valve 24, so as to facilitate the distinction from the pressure relief port 247 and facilitate independent control.

[0083] Preferably, when the air inlet is communicated with the heat dissipation air duct, the heat dissipation air duct is communicated with the inside of the exhaust through-hole, so that the air in the heat dissipation air duct can be discharged through the exhaust through-hole provided at the second end of the exhaust valve 24.

[0084] The pressure cooker provided in this embodiment improves the heat dissipation effect of the pressure cooker, improves the utilization rate of the exhaust valve 24, and enables the exhaust valve 24 to be shared by providing an air inlet on the exhaust valve 24 and selectively communicating the air inlet with the heat dissipation air duct, so that the air in the heat dissipation air duct can be discharged through the exhaust through-hole provided at the second end of the exhaust valve 24 in the conductive state.

[0085] Specifically, the exhaust valve 24 includes an exhaust inner wall 242 and an exhaust outer wall 241 that are movably connected. The first ends of the exhaust inner wall 242 and the exhaust outer wall 241 are both communicated with the internal cavity of the inner pot 14 through the pressure relief port 247; inner window through-holes 244 and outer window through-holes 243 are respectively provided at the second ends of the exhaust inner wall 242 and the exhaust outer wall 241; the inner window through-holes 244 and the outer window through-holes 243 are adapted to be aligned in the first state and the second state and are misaligned in the third state.

[0086] Preferably, in this embodiment, the exhaust inner wall 242 and the exhaust outer wall 241 of the exhaust valve 24 are both constructed as cylindrical structures, and the exhaust inner wall 242 and the exhaust outer wall 241 are nested with each other, and the exhaust inner wall 242 and the exhaust outer wall 241 can rotate relative to each other under the action of external force. In this embodiment, the driving structure that drives the exhaust inner wall 242 and the exhaust outer wall 241 to rotate relative to each other can be a combination of a motor and a gear, or a combination of a motor and a belt, etc.

[0087] Preferably, the first end of the exhaust valve 24 is the same end as the first end of the exhaust inner wall 242 and the first end of the exhaust outer wall 241; the second end of the exhaust valve 24 is the same end as the second end of the exhaust inner wall 242 and the second end of the exhaust outer wall 241. In addition, the exhaust through hole includes an inner window through hole 244 and an outer window through hole 243.

[0088] When the inner window through hole 244 is aligned with the outer window through hole 243 , the second end of the exhaust valve 24 is connected, and when the inner window through hole 244 is misaligned with the outer window through hole 243 , the second end of the exhaust valve 24 is closed.

[0089] In the pressure cooker provided in this embodiment, the inner window through hole 244 and the outer window through hole 243 are suitable for being aligningly arranged in the first state and the second state of the exhaust valve 24, so that the second end of the exhaust valve 24 is connected, which facilitates the internal cavity of the inner pot 14 to be connected with the outside, or the internal cavity of the inner pot and the heat dissipation duct are connected with the outside at the same time; the inner window through hole 244 and the outer window through hole 243 are suitable for being staggered in the third state, so that the second end of the exhaust valve 24 is closed to prevent external dust from entering.

[0090] Specifically, an inner window air inlet 246 and an outer window air inlet 245 are respectively provided on the exhaust inner wall 242 and the exhaust outer wall 241; the outer window air inlet 245 is connected to the heat dissipation air duct, and the inner window air inlet 246 is suitable for being aligned with the outer window air inlet 245 in the second state, and being staggered with the outer window air inlet 245 in the first state and the third state.

[0091] Preferably, the air inlet arranged on the exhaust valve 24 includes an inner window air inlet 246 and an outer window air inlet 245. The inner window air inlet 246 and the outer window air inlet 245 can be arranged on the side walls of the exhaust inner wall 242 and the exhaust outer wall 241. Through the relative rotation of the exhaust inner wall 242 and the exhaust outer wall 241, the inner window air inlet 246 and the outer window air inlet 245 are aligned or misaligned, so that the exhaust valve 24 and the heat dissipation air duct are connected or disconnected.

[0092] Specifically, the inner exhaust wall 242 is sleeved with the outer exhaust wall 241 and is adapted to rotate relative to each other to switch between the first state, the second state, and the third state.

[0093] The specific working mode of the pressure cooker is as follows:

[0094] After the pressure cooker starts working, when the pressure inside the inner pot increases and pressure relief is required, the program control drive structure activates the exhaust valve 24 to rotate the exhaust valve 24 to the position in the first state. At this time, the inner window through-hole 244 is aligned with the outer window through-hole 243, facilitating the conduction of the pressure relief port 247 for pressure relief; when the pressure cooker enters the cooling stage after cooking is completed, the program control drive structure rotates the exhaust valve 24 again to rotate the exhaust valve 24 to the position in the second state. At this time, the inner window through-hole 244 is aligned with the outer window through-hole 243 and the inner window air inlet 246 is aligned with the outer window air inlet 245. The air-making unit 22 is activated, and cold air is blown into the radiator from the fan inlet and enters the heat conduction unit along both sides of the air duct from the air outlet, and is discharged into the exhaust valve 24 from the exhaust pipe at the end of the air outlet, so that most of the heat is discharged from the exhaust through-hole, accelerating the cooling progress.

[0095] Combined Figure 4 , Figure 5 , Figure 8 , Figure 9 As shown, specifically, the heat conduction unit includes heat dissipation fins 21, and the heat dissipation fins 21 are composed of a plurality of fin pages arranged parallel to each other.

[0096] Preferably, the fin pages are arranged parallel to each other, so that the gaps between adjacent fin pages form an air duct.

[0097] Specifically, the ratio of the fin height X of the heat dissipation fins 21 to the gap Y between adjacent two fin pages is δ = X / Y, where 3 ≤ δ ≤ 5.

[0098] Specifically, the ratio of the fin height X of the heat dissipation fins 21 to the gap Y between adjacent two fin pages is δ = X / Y = 4.

[0099] For the pressure cooker provided in this embodiment, the heat dissipation fins 21 adopt parametric design. Combining the air duct layout and the air inlet and outlet structure forms, the overall heat dissipation noise is reduced, the thermal resistance is smaller, and the heat dissipation effect is better.

[0100] Preferably, when the diameter and height of the substrate are limited, the key factor affecting the heat dissipation effect of the heat dissipation fins 21 is to fully consider the issues of air volume and air resistance, so that the fan operates at the optimal working point. The height X and gap Y of the heat dissipation fins are the diameter factors that affect the air resistance. The research results show that δ = X / Y = 4 is the optimal aspect ratio. When δ ≤ 4, the heat dissipation effect deteriorates, and when δ > 4, the improvement of the heat dissipation rate is limited. Although the area of many heat dissipation fins is increased, the improvement of the heat dissipation effect is less, while the cost increases significantly.

[0101] Specifically, the heat dissipation fins 21 are arranged around the exhaust valve 24, and the fin pages form parallel rings.

[0102] In this embodiment, the exhaust valve 24 is arranged at the middle position of the pressure cooker upper cover. The fin pages are arranged around the exhaust valve 24 and preferably form parallel circles centered on the exhaust valve 24.

[0103] Specifically, at least part of the area of the heat dissipation fins 21 is formed with an indentation cavity 25. The indentation cavity 25 is correspondingly arranged with the air generating unit 22, and the indentation cavity 25 is adapted to shorten the air guiding path length of the heat dissipation fins 21.

[0104] In the pressure cooker provided in this embodiment, by forming an indentation cavity 25 in at least part of the area of the heat dissipation fins 21 and arranging the air generating unit 22 in the area of the indentation cavity 25, air can enter from both sides of the heat dissipation fins. On the one hand, it can leave a space for accommodating the air generating unit 22, and on the other hand, compared with the complete annular heat dissipation fins, it can shorten the air guiding path, so that the air at the end of the air guiding path will not be heated too high, thereby improving the heat dissipation efficiency and shortening the heat dissipation time.

[0105] Specifically, the heat dissipation fins 21 are arranged in a fan shape around the exhaust valve 24. The fan angle of the heat dissipation fins 21 is X, and the angle of the indentation cavity 25 is Y, where Y = 360° - X and Y ≤ 180°.

[0106] In the pressure cooker provided in this embodiment, fan-shaped heat dissipation fins are adopted, and air enters from both sides of the heat dissipation fins, reducing the air guiding path and greatly reducing the air duct resistance, thereby improving the heat dissipation efficiency and shortening the heat dissipation time.

[0107] Specifically, the pressure cooker further includes a flow dividing member 221. The flow dividing member 221 is arranged at the downstream position of the air generating unit 22 along the air flow path and is adapted to guide the air to both ends in the circumferential direction of the fan-shaped heat dissipation fins 21. The air flow path S is as Figure 4 , Figure 6 shown.

[0108] Preferably, in this embodiment, the flow splitter 221 is a baffle disposed below the air generating unit 22. The baffle can split the air blown down by the air generating unit 22 into two parts and guide them to the two ends in the circumferential direction of the fan-shaped heat dissipation fins 21 respectively.

[0109] For the pressure cooker provided in this embodiment, by arranging the flow splitter 221 at the downstream position of the air generating unit 22 along the air flow path, the air blown by the air generating unit 22 is respectively guided to the two ends in the circumferential direction of the fan-shaped heat dissipation fins 21, splitting the air flow into two parts, shortening the length of the air guiding path on each side of the fan-shaped heat dissipation fins, having a shorter heat dissipation path, and converging at the end, playing a guiding role, preventing random movement, improving the heat dissipation efficiency, and preventing the air flow from heating up too fast.

[0110] Specifically, the flow splitter 221 is disposed in the indentation cavity 25. Thus, the indentation cavity 25 is reasonably utilized to improve the guiding effect of the indentation cavity 25.

[0111] Specifically, the heat dissipation air duct includes: an air guiding member 23, and the air guiding member 23 is adapted to guide the external air flowing through the heat conducting unit into the exhaust valve 24.

[0112] The air guiding member 23 can converge the air flow at the end of the air guiding path of the heat dissipation fins and guide the air flowing through the heat dissipation fins into the exhaust valve 24, playing a guiding and converging role.

[0113] Specifically, the air guiding member 23 and the indentation cavity 25 are symmetrically arranged with respect to the exhaust valve 24.

[0114] For the pressure cooker provided in this embodiment, by symmetrically arranging the air guiding member 23 and the indentation cavity 25 with respect to the exhaust valve 24, the installation position of the air guiding member 23 is exactly at the ends of the bilateral air guiding paths of the fan-shaped heat dissipation fins, reasonably utilizing the cold air, having a more reasonable structural arrangement, fully ensuring the heat dissipation effect, preventing the temperature on one side from being too high, achieving balanced heat dissipation, and further improving the overall heat dissipation efficiency.

[0115] Specifically, the pressure cooker further includes:

[0116] A cooker body 10,

[0117] A cooker lid 11, which is movably arranged on the cooker body 10;

[0118] When the cooker lid 11 is in the open state, the angle between it and the horizontal plane is greater than 90 degrees, and a liquid collecting part is arranged at the lower position of the cooker lid 11 along the gravity direction.

[0119] The pressure cooker further includes an inner pot body and an inner pot lid which are cooperatively arranged, and the inner pot body and the inner pot lid jointly define the inner cavity of the inner pot 14. Preferably, the exhaust valve 24 is directly connected to the inner pot lid. Preferably, the pressure relief port 247 is provided on the inner pot lid. A relief hole 13 is formed on the cooker lid 11, and the relief hole 13 is adapted to make way for the exhaust valve 24, facilitating the conduction between one end of the exhaust valve 24 and the pressure relief port 247, and the other end and the outside air.

[0120] In the pressure cooker provided in this embodiment, the angle between the cooker lid 11 and the horizontal plane in the open state is greater than 90 degrees, so as to prevent condensed water from condensing and flowing into the cooker during the process of opening the lid, and avoid the influence of the condensed water flowing into the cooker on the taste of the food; part of the condensed water can be retained in the liquid collection part inside the cooker lid for collection, which is convenient for cleaning.

[0121] Specifically, a slideway 12 is provided on the outer surface of the cooker body 10, and the cooker lid 11 is adapted to slide up and down along the slideway 12 in the open state.

[0122] Specifically, the cooker lid 11 is detachably connected to the cooker body 10.

[0123] In the pressure cooker provided in this embodiment, by providing a slideway 12 on the outer surface of the cooker body 10, enabling the cooker lid 11 to slide up and down along the slideway 12 in the open state, and detachably connecting the cooker lid 11 to the cooker body 10, part of the condensed water can be retained inside the cooker lid for collection. When cleaning is required, the cooker lid can be taken out, facilitating the quick cleaning of the residual substances.

[0124] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A pressure cooker, characterized in that, Comprising: Inner pot (14); A heat conduction unit, at least partially attached to the inner pot (14); A wind generating unit (22), adapted to guide external air to flow through the heat conduction unit and be discharged via a heat dissipation air duct; And An exhaust valve (24), at least partially disposed on the inner pot (14), and adapted to selectively communicate with the heat dissipation air duct; the exhaust valve (24) includes a first state in which the internal cavity of the inner pot (14) communicates with the outside; further includes a second state in which the internal cavity of the inner pot (14) and the heat dissipation air duct communicate with the outside simultaneously; and a third state in which the internal cavity of the inner pot (14) and the heat dissipation air duct are both shut off from the outside.

2. The pressure cooker according to claim 1, characterized in that, A first end of the exhaust valve (24) is directly or indirectly communicated with the internal cavity of the inner pot (14) through a pressure relief port (247); a second end of the exhaust valve (24) is provided with an exhaust through hole, and the pressure relief port (247) selectively communicates with the exhaust through hole.

3. The pressure cooker according to claim 2, characterized in that, The exhaust valve (24) is further provided with an air inlet, and the air inlet selectively communicates with the heat dissipation air duct.

4. The pressure cooker according to claim 3, characterized in that, The exhaust valve (24) includes an exhaust inner wall (242) and an exhaust outer wall (241) which are movably connected. A first end of the exhaust inner wall (242) and a first end of the exhaust outer wall (241) are both communicated with the internal cavity of the inner pot (14) through the pressure relief port (247); a second end of the exhaust inner wall (242) and a second end of the exhaust outer wall (241) are respectively provided with an inner window through hole (244) and an outer window through hole (243); the inner window through hole (244) and the outer window through hole (243) are adapted to be aligned in the first state and the second state, and are misaligned in the third state.

5. The pressure cooker according to claim 4, characterized in that, The exhaust inner wall (242) and the exhaust outer wall (241) are further respectively provided with an inner window air inlet (246) and an outer window air inlet (245); the outer window air inlet (245) communicates with the heat dissipation air duct; the inner window air inlet (246) is adapted to be aligned with the outer window air inlet (245) in the second state, and is misaligned with the outer window air inlet (245) in the first state and the third state.

6. The pressure cooker according to claim 5, characterized in that, The exhaust inner wall (242) and the exhaust outer wall (241) are sleeved and connected, and are adapted to rotate relative to each other to switch between the first state, the second state and the third state.

7. The pressure cooker according to claim 1, characterized in that, The heat dissipation air duct includes: a wind guiding member (23), and the wind guiding member (23) is adapted to guide the external air flowing through the heat conduction unit into the exhaust valve (24).

8. The pressure cooker according to claim 7, characterized in that, The indentation cavity (25) formed on the wind guiding member (23) and the heat dissipation fins (21) is symmetrically disposed with respect to the exhaust valve (24).

9. The pressure cooker according to any one of claims 1 - 8, characterized in that, The heat conduction unit includes heat dissipation fins (21), and the heat dissipation fins (21) are composed of a plurality of fin pages arranged parallel to each other.

10. The pressure cooker according to claim 9, characterized in that, The ratio of the fin height X of the heat dissipation fins (21) to the gap Y between two adjacent fin pages is δ = X / Y, where 3 ≤ δ ≤ 5.

11. The pressure cooker according to claim 9, characterized in that, The ratio of the fin height X of the heat dissipation fins (21) to the gap Y between two adjacent fin pages is δ = X / Y = 4.

12. The pressure cooker according to claim 9, characterized in that, The heat dissipation fins (21) are arranged around the exhaust valve (24), and the fin pages form parallel annular shapes with each other.

13. The pressure cooker according to claim 12, characterized in that, At least a part of the heat dissipation fins (21) is formed with an indentation cavity (25), the indentation cavity (25) is correspondingly arranged with the air blowing unit (22), and the indentation cavity (25) is adapted to shorten the air guiding path length of the heat dissipation fins (21).

14. The pressure cooker according to claim 13, characterized in that, The heat dissipation fins (21) are arranged in a fan shape around the exhaust valve (24), the fan angle of the heat dissipation fins (21) is X, and the angle of the indentation cavity (25) is Y, where Y = 360° - X, and Y ≤ 180°.

15. The pressure cooker according to claim 14, characterized in that, The pressure cooker further includes a flow splitting member (221), the flow splitting member (221) is arranged at the downstream position of the air blowing unit (22) along the air flow path, and is adapted to guide the air to both ends in the circumferential direction of the fan-shaped heat dissipation fins (21) respectively.

16. The pressure cooker according to claim 15, characterized in that, The flow splitting member (221) is arranged in the indentation cavity (25).

17. The pressure cooker according to any one of claims 1 - 8, characterized in that, It further includes: A cooker body (10), A cooker lid (11), which is movably arranged on the cooker body (10); When the cooker lid (11) is in the open state, the included angle between it and the horizontal plane is greater than 90 degrees, and a liquid collecting part is arranged at the lower position of the cooker lid (11) along the gravity direction.

18. The pressure cooker according to claim 17, wherein A slideway (12) is arranged on the outer surface of the cooker body (10), and the cooker lid (11) is adapted to slide up and down along the slideway (12) when in the open state.

19. The pressure cooker according to claim 18, wherein The cooker lid (11) is detachably connected to the cooker body (10).

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