Exhaust device of electric pressure cooker

Abstract

The electric pressure cooker comprises an outer cooker, an inner container and a cooker cover, the cooker cover is provided with an exhaust pipe and a pressure limiting valve, the outer cooker is provided with a driving assembly, the driving assembly comprises a motor and a threaded push rod, and the motor drives the threaded push rod to rotationally ascend or descend; the pot cover is provided with a linkage assembly, and the linkage assembly at least comprises a linkage rod; one end of the linkage rod is in driving connection with the pressure-limiting valve, and the other end is in driving connection with the threaded push rod; the rotating time of the motor or the rotating number of turns of the motor is controlled so as to control the moving distance of the threaded push rod, the linkage rod and the pressure limiting valve, and the gas displacement of the exhaust pipe is controlled. The driving assembly comprises the motor and the threaded push rod, the motor drives the threaded push rod to rise in a rotary mode, the rising height of the threaded push rod can be controlled by controlling the running time of the motor or controlling the number of rotation turns of the output shaft of the motor, multi-stage exhaust is achieved, the exhaust amount is controlled, and the use requirements of users are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pressure cooker, more specifically relates to the exhaust device of electric pressure cooker. BACKGROUND

[0002] Electric pressure cooker is a kind of household electrical appliances by high temperature and high pressure cook food, the air pressure in the electric pressure cooker is greater than the air pressure of external environment, by high pressure soup, bone and so on, can cook food faster soft;

[0003] Electric pressure cooker is completed after cooking food, need first discharge the pressure in the country, then open the pot cover, avoid the accident when opening the cover, the exhaust pressure relief structure of electric pressure cooker in the prior art, generally by manual exhaust mode, again pot cover is provided with button, by pressing button after tilting pressure limiting valve rises, exhaust passage opens and carries out pressure relief, manual pressure relief mode because button and pressure limiting valve are all set on the pot cover, and steam is easy to burn the user when pressure relief;

[0004] In order to solve the problem existing in manual pressure relief, the existing China announcement number CN216797309U discloses a kind of cooking utensils, cooking utensils include: boiler body, upper cover and pressure relief assembly, upper cover includes cover body, exhaust pipe and pressure limiting valve, exhaust pipe is arranged in cover body, pressure limiting valve is arranged at the upper end of exhaust pipe;Pressure relief assembly includes electromagnetic valve and exhaust rod, electromagnetic valve is driven connection with one end of exhaust rod, the other end of exhaust rod is driven connection with pressure limiting valve;The jacking of exhaust rod and pressure limiting valve is driven by the action of electromagnetic valve, to make the gas in boiler body can be discharged through exhaust pipe.Simultaneously, because electromagnetic valve is arranged on the bracket inside shell, and bracket, shell and the middle plate connection located on the upper end of shell, make assembly structure more simplified, save assembly cost.

[0005] However, the above prior art due to the thrust of electromagnet is limited, increase thrust needs to increase coil, cost increases;In addition, electromagnet automatic exhaust, only open or close two states, cannot realize multi-stage exhaust, cannot satisfy the multifunctional demand of user. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model provides a kind of exhaust device of electric pressure cooker.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme: The exhaust device of electric pressure cooker, electric pressure cooker includes: outer pot, the inner container of assembly in outer pot and pot cover, and the pot cover is provided with exhaust pipe and pressure limiting valve, and the upper and lower movement of pressure limiting valve controls the opening and closing of exhaust pipe, the outer pot is provided with drive assembly, and drive assembly includes: motor and threaded push rod, and the motor drives threaded push rod to rotate and ascend or descend, the pot cover is provided with linkage assembly, and linkage assembly at least includes: linkage rod, one end of linkage rod is drivenly connected with pressure limiting valve, and the other end is drivenly connected with threaded push rod, and the length of control motor rotation time or control the rotation number of motor is to control the moving distance of threaded push rod, linkage rod and pressure limiting valve, realizes the exhaust capacity of control exhaust pipe.

[0008] As a preferred scheme of the utility model, the outer pot is provided with a threaded part threadedly connected with the threaded push rod, or the drive assembly is further provided with a push rod fixing seat, and the threaded push rod is threadedly connected with the push rod fixing seat.

[0009] As a preferred scheme of the utility model, the drive assembly further includes a motor waterproof sleeve, the motor is assembled in the motor waterproof sleeve, and the push rod fixing seat is limited with the motor waterproof sleeve.

[0010] As a preferred scheme of the utility model, the motor is provided with a D-shaped shaft, the threaded push rod is provided with a D-shaped hole, and the threaded push rod is sleeved on the D-shaped shaft, the push rod fixing seat is provided with a through hole, an internal thread is arranged in the through hole, and the threaded push rod is threadedly installed in the through hole.

[0011] As a preferred scheme of the utility model, the outer pot is provided with a support member protruding radially outward, the support member is provided with a hole for the top end of the threaded push rod to extend out, and a sealing rubber ring is arranged at the hole.

[0012] As a preferred scheme of the utility model, the linkage assembly further includes an elastic member, and the elastic member provides a restoring force for the downward movement of the linkage rod.

[0013] As a preferred scheme of the utility model, the pot cover includes an outer cover and an inner cover, the outer cover is provided with a position for assembling the pressure limiting valve, and the inner cover is provided with a position for assembling the exhaust pipe, and the exhaust pipe is communicated with the inner container.

[0014] As a preferred scheme of the utility model, the linkage rod is provided in multiple sections and is bent, the end of the linkage rod is sleeved with the elastic member, one end of the elastic member is limited in the pot cover, and the other end of the elastic member is limited in the linkage rod to provide an acting force for the downward movement of the linkage rod.

[0015] As a preferred scheme of the utility model, the upper end of the linkage rod corresponds to the bottom of the pressure limiting valve.

[0016] Compared with the prior art, the utility model discloses the following beneficial technical effects: the utility model discloses the cooperation of drive assembly and linkage rod assembly, control the lift of pressure limiting valve, then control exhausts in the electric mode, overcome the problem that traditional manual exhaust is easy to scald user, moreover, the drive assembly of the utility model discloses a motor and screw push rod, the motor drives screw push rod to rotate and goes up, through control the running time of motor or control the rotation number of the output shaft of motor, then can control the ascending height of screw push rod, realize multistage exhaust, control exhaust amount, satisfy the use demand of user. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0018] Figure 1 It is a structural schematic view of electric pressure cooker;

[0019] Figure 2 It is an explosion view of electric pressure cooker;

[0020] Figure 3 It is a sectional view of electric pressure cooker;

[0021] Figure 4 It is a schematic view of drive assembly;

[0022] Figure 5 It is a sectional view of drive assembly;

[0023] Figure 6 It is an explosion view of drive assembly.

[0024] Explanation of reference signs

[0025] Outer pot 100;Support 110;Hole 111;Sealing rubber ring 112;Inner container 200;Pot cover 300;Outer cover 310;Position 311;Inner cover 320;Exhaust pipe 400;Pressure limiting valve 500;Drive assembly 600;Motor 610;D type shaft 611;Screw push rod 620;D type hole 621;Push rod fixed seat 630;Through hole 631;Internal thread 632;Motor waterproof sleeve 640;Linkage assembly 700;Linkage rod 710;Elastic member 720. DETAILED DESCRIPTION

[0026] The present application will now be described further to additional detail with reference to the drawings. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the present application, and therefore only show the components related to the present application.

[0027] Exhaust device of electric pressure cooker, such as Figures 1-3 As shown, the electric pressure cooker comprises an outer pot 100, an inner pot 200 assembled on the outer pot 100, and a pot cover 300 provided with an exhaust pipe 400 and a pressure limiting valve 500, the up and down movement of the pressure limiting valve 500 controls the opening and closing of the exhaust pipe 400.

[0028] The outer pot 100 can be a single-layer structure or a double-layer structure, and generally adopts a double-layer structure, forming a receiving space between the outer layer and the inner layer to accommodate some electrical components such as heating elements, and at the same time, the double-layer structure can also reduce heat transfer to the outer layer to avoid scalding the user;

[0029] The inner pot 200 is assembled in the outer pot 100, and the inner pot 200 can be put into or taken out of the outer pot 100, while the pot cover 300 is assembled with the outer pot 100 and is limited by a limiting structure after assembly to prevent the pot cover 300 from being blown off when the pressure in the inner pot 200 is too high, and the pot cover 300 and the outer pot 100 can be a split structure or a flip cover structure, and in the embodiment, as shown in Figure 2 The pot cover 300 and the outer pot 100 are a split structure, and the pot cover 300 can be taken out of the outer pot 100.

[0030] The outer pot 100 is provided with a driving assembly 600, which comprises a motor 610 and a threaded push rod 620, and the motor 610 drives the threaded push rod 620 to rotate upward or downward;

[0031] The pot cover 300 is provided with a linkage assembly 700, which at least comprises a linkage rod 710, one end of the linkage rod 710 is drivingly connected with the pressure limiting valve 500, and the other end is drivingly connected with the threaded push rod 620;

[0032] The length of the rotation time of the motor 610 or the rotation number of the motor 610 is controlled to control the movement distance of the threaded push rod 620, the linkage rod 710 and the pressure limiting valve 500, so as to control the exhaust amount of the exhaust pipe 400.

[0033] When the driving assembly 600 moves, the motor 610 drives the threaded push rod 620 to rise, in the process of rising, the threaded push rod 620 pushes the linkage rod 710 to rise, and then the linkage rod 710 pushes the pressure limiting valve 500 to rise, so that the exhaust pipe 400 is opened for pressure relief.

[0034] In the technology, the motor 610 can be a reduction motor, when the driving shaft of the motor 610 rotates, the threaded push rod 620 is pushed to rise, and the rotation time of the driving shaft of the motor 610 or the rotation number of the driving shaft can be run through the control program provided by the electric pressure cooker;

[0035] If the control program of the electric pressure cooker sets the maximum number of rotations of the motor 610 to 5, then at 0 rotations, the drive shaft does not rotate, the threaded push rod 620 is in the initial position, the linkage rod 710 is not triggered, and the pressure limiting valve 500 closes the exhaust pipe 400, and no exhaust is released;

[0036] When the driving shaft of the control motor rotates 2.5 times, the threaded push rod 620 rises to half the height, the linkage rod 710 is triggered, and the pressure limiting valve 500 is driven to rise to half the height, the exhaust pipe 400 is partially opened, and the exhaust is slowly discharged;

[0037] When the number of rotations of the driving shaft of the control motor reaches 5, the threaded push rod 620 rises and moves to the maximum height, the linkage rod 710 is triggered, and the pressure limiting valve 500 is driven to rise to the maximum height, the exhaust pipe 400 is fully opened, and exhaust is quickly exhausted;

[0038] Therefore, the exhaust speed of the exhaust pipe 400 is controlled by the number of rotations of the drive shaft. In addition to the above-mentioned two-stage exhaust, more stages of exhaust can be set, such as the drive shaft of the motor rotates 1 circle, 2 circles, 3 circles, 4 circles, 5 circles, etc., to achieve 5-stage exhaust.

[0039] In the control program, a button can be set on the control panel of the electric pressure cooker for each level of exhaust, or the same button can achieve corresponding levels of exhaust according to the number of consecutive pressings. For example, if the button is pressed twice in succession, the drive shaft of the motor will be controlled to rotate two circles to achieve two levels of slow exhaust; if the button is pressed five times in succession, the drive shaft of the motor will be controlled to rotate five circles to achieve five levels of quick exhaust.

[0040] How the specific control program controls the rotation time or number of rotations of the driving shaft of the motor can be set through the existing technical program, and the program will not be described in detail in this embodiment.

[0041] In one embodiment, the threaded push rod 620 needs to be limited by the threaded portion so that the threaded push rod 620 can rise during the rotation process;

[0042] In one embodiment, a threaded portion threadedly connected to the threaded push rod 620 may be provided in the outer pot 100. The threaded portion is formed in the outer pot 100, such as being provided in the outer pot 100 at a position where the threaded push rod 620 extends out of the outer pot 100.

[0043] Another way, such as Figures 4-6 As shown, the driving assembly 600 may be further provided with a push rod fixing seat 630 , and the threaded push rod 620 is threadedly connected to the push rod fixing seat 630 .

[0044] Further, the driving assembly 600 further comprises a motor waterproof sleeve 640, the motor 610 is assembled in the motor waterproof sleeve 640, and the push rod fixing seat 630 is limited with the motor waterproof sleeve 640, specifically, the two can be assembled through screws;

[0045] Optionally, the motor waterproof sleeve 640 and the push rod fixing seat 630 can also be fixed in the outer pot 100 respectively, but the motor waterproof sleeve 640, the push rod fixing seat 630, the motor 610 and the threaded push rod 620 are assembled into an integral whole in advance and then assembled in the outer pot 100, which is more convenient for assembly.

[0046] Further, the motor 610 is provided with a D-shaped shaft 611, the threaded push rod 620 is provided with a D-shaped hole 621, the threaded push rod 620 is sleeved on the D-shaped shaft; the push rod fixing seat 630 is provided with a through hole 631, an internal thread 632 is arranged in the through hole 631, and the threaded push rod 620 is screwed in the through hole.

[0047] In an embodiment, the outer pot 100 is provided with a support 110 protruding radially outward; the support 110 is provided with a hole 111 for the threaded push rod 620 to extend out, and a sealing rubber ring 112 is arranged at the hole 111;

[0048] As shown in Figure 2 and Figure 3 , the driving connection between the threaded push rod 620 and the connecting rod 710 means that when the threaded push rod 620 moves upward, the connecting rod 710 can be triggered to move, and there is no fixed connection between the two, which does not affect the disassembly of the pot cover 300 from the outer pot 100; and after the threaded push rod 620 moves downward, the connecting rod 710 resets and moves downward.

[0049] The sealing rubber ring 112 can prevent condensate water or water during cleaning from entering the inner pot 100 through the hole 111.

[0050] In an embodiment, as shown in Figure 3 , after the connecting rod 710 moves upward, the connecting rod 710 also resets after the threaded push rod 620 moves downward and resets, and the resetting force of the connecting rod 710 can be the gravity of the connecting rod 710 itself to automatically move downward;

[0051] Of course, the elastic member 720 can also be connected to the connecting rod 710, and the elastic force of the elastic member 720 can make the connecting rod 710 move downward and remain at the position after moving downward.

[0052] In an embodiment, the pot cover 300 comprises an outer cover 310 and an inner cover 320, the outer cover 310 is provided with a position for assembling the pressure limiting valve 500; and the inner cover 320 is provided with a position for assembling the exhaust pipe 400, the exhaust pipe 400 communicates with the inner container 200.

[0053] Specifically, asFigure 3 As shown, a cavity is formed between the outer cover 310 and the inner cover 320 for accommodating some components. The exhaust pipe 400 is vertically mounted on the inner cover 320. The outer cover 310 is provided with a position 311 for assembling the pressure limiting valve 500. The pressure limiting valve 500 is vertically movable up and down in the position 311.

[0054] The pressure limiting valve 500 is provided with a valve stem with a tapered end. When the pressure limiting valve 500 moves downward, the valve stem blocks the upper end of the exhaust pipe 400. When the pressure limiting valve 500 moves upward, the valve stem leaves the upper end of the exhaust pipe 400.

[0055] The upper end of the connecting rod 710 corresponds to the bottom of the pressure limiting valve 500. When the connecting rod 710 moves upward, it pries the pressure limiting valve 500 upward. The upward distance of the connecting rod 710 determines the upward distance of the pressure limiting valve 500, which further determines the size of the exhaust volume.

[0056] The connecting rod 710 is a multi-section bending arrangement, and the elastic member 720 can be a spring connected to the connecting rod 710 or a spring connected to the connecting rod 710;

[0057] Specifically, if Figure 2 As shown, a spring is sleeved on the end of the connecting rod 710, one end of the spring is limited to the pot cover 300, and the other end is limited to the connecting rod 710 to provide a force for the connecting rod 710 to move downward.

[0058] When the electric pressure cooker is in use, the driving assembly 600 controls the operation of the linkage assembly 700, which in turn controls the movement of the pressure limiting valve 500, thereby ultimately achieving multi-stage control of the exhaust volume to meet the user's needs.

[0059] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust device for an electric pressure cooker, the electric pressure cooker comprising: An outer pot (100), a liner (200) assembled in the outer pot (100), and a pot cover (300), the pot cover (300) is provided with an exhaust pipe (400) and a pressure limiting valve (500), the pressure limiting valve (500) moves up and down to control the opening and closing of the exhaust pipe (400), characterized in that: The outer pot (100) is provided with a driving assembly (600), the driving assembly (600) comprises: a motor (610) and a threaded push rod (620), the motor (610) drives the threaded push rod (620) to rotate upward or downward; The pot cover (300) is provided with a linkage assembly (700), the linkage assembly (700) at least comprises: a linkage rod (710), one end of the linkage rod (710) is drivingly connected with the pressure limiting valve (500), and the other end is drivingly connected with the threaded push rod (620); The rotation time of the motor (610) is controlled or the rotation number of the motor (610) is controlled to control the moving distance of the threaded push rod (620), the linkage rod (710) and the pressure limiting valve (500), so that the exhaust amount of the exhaust pipe (400) is controlled.

2. The pressure release device of claim 1, wherein: The outer pot (100) is provided with a threaded part in threaded connection with the threaded push rod (620); or the driving assembly (600) is further provided with a push rod fixing seat (630), and the threaded push rod (620) is in threaded connection with the push rod fixing seat (630).

3. The pressure release device of claim 2, wherein: The driving assembly (600) further comprises: a motor waterproof sleeve (640), the motor (610) is assembled in the motor waterproof sleeve (640), and the push rod fixing seat (630) is limited by the motor waterproof sleeve (640).

4. The pressure release device of claim 2, wherein: The motor (610) is provided with a D-shaped shaft, the threaded push rod (620) is provided with a D-shaped hole, and the threaded push rod (620) is sleeved on the D-shaped shaft; The push rod fixing seat (630) is provided with a through hole, an internal thread is arranged in the through hole, and the threaded push rod (620) is screwed in the through hole.

5. The pressure release device of claim 1 or 4, wherein: The outer pot (100) is provided with a support (110) protruding radially outward; the support (110) is provided with a hole (111) for the top end of the threaded push rod (620) to extend out, and a sealing rubber ring (112) is arranged at the hole (111).

6. The steam venting apparatus of claim 1, wherein: The linkage assembly (700) further comprises: an elastic member (720), the elastic member (720) provides a restoring force for the downward movement of the linkage rod (710).

7. The pressure release device of claim 6, wherein: The pot cover (300) comprises: an outer cover (310) and an inner cover (320), the outer cover (310) is provided with a position for assembling the pressure limiting valve (500); the inner cover (320) is provided with a position for assembling the exhaust pipe (400), and the exhaust pipe (400) communicates with the liner (200).

8. The pressure release device of claim 7, wherein: The linkage rod (710) is provided in multiple sections and is bent, the end of the linkage rod (710) is sleeved with the elastic member (720), one end of the elastic member (720) is limited in the pot cover (300), and the other end is limited in the linkage rod (710) to provide an acting force for the downward movement of the linkage rod (710).

9. The pressure release device of claim 8, wherein: The upper end of the linkage rod (710) corresponds to the bottom of the pressure limiting valve (500).

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