Exhaust device of electric pressure cookerTechnical Field
The invention belongs to the technical field of electric pressure cookers, and relates to an exhaust device of an electric pressure cooker.
Background
The existing electric pressure cooker is required to exhaust after cooking, then the cooker cover is opened, and when the cooker cover is exhausted, the pressure limiting valve is directly pulled to exhaust, so that a button or a push-button exhaust mechanism is added to the electric pressure cooker, a user uses the button or the push button to exhaust the pressure limiting valve, and the button and the push button are far away from the pressure limiting valve, so that the risk of scalding hands is avoided. However, in the process of opening the pot cover, the button and the push button can return automatically, so that the pressure limiting valve is closed, and at the moment, the pot cover is opened unevenly because food also has waste heat and the heating plate also has waste heat, and the pressure in the pot can be increased again.
Disclosure of Invention
The invention provides an exhaust device of an electric pressure cooker aiming at the problems in the prior art, and aims to overcome the defect that a cooker cover of the existing electric pressure cooker is easy to open.
The invention is realized in the following way:
the utility model provides an electric pressure cooker exhaust apparatus, includes the pot body and pot cover, set up the pressure limiting valve on the pot cover, its characterized in that is provided with the pit on the pot body, set up the ejector pin on the pot cover, the ejector pin with the pressure limiting valve is connected, the lower tip of ejector pin imbeds when the pot cover closes the lid the pit and leaves when uncapping the pit, set up between ejector pin and the pot cover and can order about the ejector pin embedding the elastic component of pit.
When the pot cover is folded, the pot cover cannot be tilted relative to the pot body, and under the action of the elastic piece, the lower end part of the ejector rod is positioned in the pit, and the pressure limiting valve falls down to block the exhaust pipe. When the pot cover needs to be opened, the pot cover is rotated, air pressure is released by being matched with a push button or a push button before rotation, at the moment, the lower end part of the ejector rod can leave the pit to reach the surface protruding relative to the pit, so that the ejector rod is jacked up, and the ejector rod jacks up the pressure limiting valve again, so that the pressure limiting valve leaves the exhaust pipe, the air pressure in the pressure pot is communicated with the outside, the push button and the push button are prevented from being possibly automatically reset, the pot cover is not easy to rotate due to the increase of the air pressure in the pressure pot, and the pot cover is smoothly opened and rotated. The pit is a part which is raised relative to the pit and can be a pit relative to a normal plane, and when the normal plane is provided with a convex rib, the pit can be the normal plane or the pit relative to the normal plane.
Preferably, a push button is arranged on the pot cover, the push button is connected with the pressure limiting valve, and the pressure limiting valve can be jacked up when the push button is pushed. The push button has the advantage of difficult self-return relative to the push button.
Preferably, the pot cover is hinged with a lever, the supporting end of the lever is connected with a pressure limiting valve, the stress end of the lever is connected with the push button, the lower end face of the push button is provided with a convex position, and when the convex position props against the stress end, the pressure limiting valve is jacked up by the supporting end. For protruding position, push away the button lower extreme face and have the concave position, in the round trip slip in push away the button, the atress end just changes at protruding position and concave position, and the atress end is when protruding position, and it is pressed down, and the supporting end perk is in order to lift the pressure limiting valve, and the atress end is when concave position, under the effect of pressure limiting valve gravity, the supporting end is pressed down, atress end embedding concave position.
Preferably, a return structure is arranged between the ejector rod and the push button, and the return structure can promote the push button to leave the convex position when the ejector rod is jacked. The return structure can be in gear transmission or bevel transmission.
Preferably, the return structure comprises a return piece fixed on the ejector rod, the return piece is provided with a driving inclined plane, the push button is provided with a driven inclined plane which is arranged corresponding to the driving inclined plane, and the push button can be pushed to move when the driving inclined plane goes upwards. The bevel transmission structure is simple and the cost is low.
Preferably, the pot body is provided with a convex rib, and the convex rib is adjacent to the concave pit. The pits and ribs are relatively normal planes, so that the pits do not need to be deep, and the layout is convenient.
Preferably, the ribs have a transition slope at the abutment with the pits. Thus, the ejector rod is convenient to transition from the pit to the convex rib.
Preferably, the ejector rod is connected with the pressure limiting valve through a connecting sheet, one end part of the connecting sheet is propped against the pressure limiting valve, and the other end part of the connecting sheet is fixed on the ejector rod. Therefore, the ejector rod and the connecting sheet can be assembled, and the problems of high process requirement and poor applicability of the integrated ejector rod are avoided.
According to the exhaust device for the electric pressure cooker, when the cooker cover is rotated, the ejector rod can be lifted, so that the pressure limiting valve is lifted, the pressure limiting valve is in an open state, and the phenomenon that the cooker cover is opened irregularly due to the fact that the air pressure in the electric pressure cooker is increased due to waste heat in the electric pressure cooker is avoided.
Drawings
FIG. 1 is a schematic view of the structure of a pan body according to the present invention.
FIG. 2 is a schematic view of a first angle structure of a lid of the present invention.
Fig. 3 is a schematic view of a second angle structure of the pot cover in the invention.
FIG. 4 is a schematic view of the inner part of the pot cover in the invention.
Fig. 5 is a schematic cross-sectional view of an electric pressure cooker when a push rod is pushed up.
Fig. 6 is a schematic cross-sectional view of an electric pressure cooker according to the present invention, in which a push rod is inserted into a pit.
Fig. 7 is a schematic structural view of an electric pressure cooker in which a force-bearing end of a lever is located at a concave position of a push button.
Fig. 8 is a schematic structural view of an electric pressure cooker with no protruding position of a rain push button at the stress end of a lever.
Fig. 9 is a schematic diagram showing the positional relationship between the active inclined plane and the passive inclined plane when the ejector pin is embedded in the pit.
FIG. 10 is a schematic diagram showing the positional relationship between an active slope and a passive slope when the ejector pin is lifted.
The drawings are marked with the following description: 100. the pressure limiting valve comprises a pot cover, 110, a pressure limiting valve, 120, an exhaust pipe, 200, a pot body, 210, a middle frame, 220, pits, 230, ribs, 300, a push rod, 310, an elastic piece, 320, a connecting piece, 330, an active inclined plane, 400, a push button, 410, a lever, 411, a supporting end, 412, a stress end, 420, a convex position, 430, a concave position and 440, and a passive inclined plane.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, so that the technical scheme of the present invention can be understood and mastered more easily. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment provides an electric pressure cooker, which is a specific application of the exhaust device. As shown in fig. 1 to 10, the electric pressure cooker comprises a cooker body 200 and a cooker cover 100, wherein a pressure limiting valve 110 is arranged on the cooker cover 100, and the pressure limiting valve 110 is matched with an exhaust pipe 120 on the cooker cover 100. The pressure limiting valve 110 can block the exhaust pipe 120 and prevent the connection between the inside of the pot and the outside air pressure within a certain air pressure range. The pot body 200 is provided with a middle frame 210, the upper surface of the middle frame 210 is provided with a pit 220 and a convex rib 230, the convex rib 230 is adjacent to the pit 220, and the convex rib 230 is provided with a transition inclined plane at the adjacent position with the pit 220.
Referring to fig. 4 to 6, a lid 100 is provided with a push rod 300, the push rod 300 is connected with a pressure limiting valve 110, for example, through a connecting piece 320 connected with the pressure limiting valve 110, one end of the connecting piece 320 is abutted against the pressure limiting valve 110, and the other end of the connecting piece 320 is fixed on the push rod 300. The lower end of the push rod 300 is embedded into the pit 220 when the pot cover 100 is closed and leaves the pit 220 when the pot cover is opened, and moves to the convex rib 230, an elastic piece 310 capable of driving the push rod 300 to be embedded into the pit 220 is arranged between the push rod 300 and the pot cover 100, and the elastic piece 310 can select a spring, so that the push rod 300 obtains a downward moving force.
Referring to fig. 4, 7 and 8, a push button 400 is provided on the lid 100, the push button 400 is connected to the pressure limiting valve 110, for example, the lid 100 is connected to the pressure limiting valve 110 through a lever 410, and the lever 410 is hinged to the lid 100. When the push button 400 is pushed, the pressure limiting valve 110 can be lifted up by the lever 410. Specifically, the supporting end 411 of the lever 410 is connected to the pressure limiting valve 110, the force receiving end 412 of the lever 410 is connected to the push button 400, the lower end surface of the push button 400 is provided with a protrusion 420, and when the protrusion 420 abuts against the force receiving end 412, the pressure limiting valve 110 is lifted up by the supporting end 411. With respect to the convex portion 420, the push button 400 is provided with a concave portion 430, and when the force receiving end 412 is located in the concave portion 430, the supporting end 411 no longer supports the pressure limiting valve 110 to be located at a high position.
Referring to fig. 4, 9 and 10, a return structure is provided between the ejector 300 and the push button 400, and the return structure can urge the push button 400 to leave the boss 420 when the ejector 300 is lifted. The return structure is fixed on the return piece of the ejector rod 300, the return piece is provided with an active inclined plane 330, the push button 400 is provided with a passive inclined plane 440 which is arranged corresponding to the active inclined plane 330, and the push button 400 can be pushed to move when the active inclined plane 330 goes up. The working principle of the embodiment is as follows: when the electric pressure cooker is in the airtight state, referring to fig. 6 and 7, the lower end of the ejector rod 300 is located in the pit 220, the pressure limiting valve 110 is located at the low position to block the exhaust pipe 120, and the stress end 412 is located at the concave position 430, so that the electric pressure cooker can perform heating and high-pressure operation. When the pot cover 100 needs to be opened, the push button 400 is pushed to enable the stress end 412 to be located at the convex position 420, the stress end 412 descends, the support end 411 ascends to jack up the pressure limiting valve 110, the pressure limiting valve 110 leaves the exhaust pipe 120, the pot is communicated with the outside air pressure, the high pressure in the pot is released, after the release of the air pressure in the pot is completed, the pot cover 100 can be rotated, in the rotating process, the ejector rod 300 leaves the pit 220 and moves to the convex rib 230, the ejector rod 300 can jack up the pressure limiting valve 110 through the connecting sheet 320, so that in the opening process, even if the push button 400 returns, the stress end 412 returns to the concave position 430, the pressure limiting valve 110 cannot fall down, the communication between the pot and the outside can be ensured, and the phenomenon that the pot cover 100 is not smooth due to the increase of the air pressure in the pot caused by the waste heat in the pot is avoided. In the process of rotating the pot cover 100 and the ejector rod 300 from the pit 220 to the convex rib 230, the driving inclined surface 330 can push the driven inclined surface 440 to enable the push button 400 to return, so that the situation that a user forgets to push the push button 400 back is avoided, and the pressure limiting valve 110 can block the exhaust pipe 120 when working next time can be ensured.