CN111713967A

CN111713967A - Circulation structure and leak protection liquid's rice cooker

Info

Publication number: CN111713967A
Application number: CN202010733869.2A
Authority: CN
Inventors: 卓木城
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-09-29
Anticipated expiration: 2040-07-27
Also published as: CN111713967B

Abstract

The invention discloses a circulation structure and a leakage-proof electric cooker, wherein the circulation structure comprises a shell, a cooker body arranged in the shell, a pressure cylinder, a pressure release pipe and an elastic movable assembly, wherein the pressure cylinder is fixedly arranged on the outer wall of the shell, the pressure cylinder is communicated with the cooker body through the pressure release pipe, and the elastic movable assembly is arranged at the lower part of the pressure cylinder and is connected with the outer wall of the shell; the electric cooker with liquid leakage prevention comprises a circulating structure and a cover body arranged at the upper part of the shell; the electric cooker adopting the structure can automatically push the sealing swinging piece to rotate after the temperature and the pressure in the cooker body reach a certain value when the electric cooker is heated, so that the cooker body is communicated with the pressure cylinder, the rubber plug is driven to move downwards by virtue of high-pressure air flow to increase the space of the pressure cylinder, the filter core and the cleaning assembly are matched to intercept and clean the sprayed fluid, and the elastic movable assembly automatically feeds the fluid food into the cooker body again after the air pressure is reduced, thereby having the function of pressure relief, circulation and leakage prevention.

Description

Circulation structure and leak protection liquid's rice cooker

Technical Field

The invention relates to the field of household appliances, in particular to an electric cooker with a circulating structure and liquid leakage prevention.

Background

The electric cooker is a cooker which converts electric energy into heat energy, and is convenient to use, safe and reliable. The multifunctional cooking machine can cook food, can preserve heat, is clean and sanitary to use, has no pollution, saves time and labor, and is one of indispensable tools for modernization of housework.

Most electric cookers in the current market also have the function of high-pressure stewing, are similar to pressure cookers, and automatically communicate the interior of the cooker with the outside atmosphere to release air after the internal air pressure is increased to a certain value, so that the function of pressure release is achieved.

The pressure relief device of the existing electric cooker has the following defects: 1. the pressure of the existing pressure relief gas is borne by the pressure relief cavity, so that the service life of the pressure relief cavity is shortened; 2. the volume of fluid which can be stored in the existing pressure relief cavity is constant, and when excessive liquid is brought out by pressure relief, the liquid overflows due to the constant volume of the pressure relief cavity when backflow is not in time, so that food waste is caused; 3. when the fluid brought out by the pressure relief hole is too much, the prior electric cooker can cause the damage of the device due to the untimely backflow of the fluid, thereby reducing the safety of the product; 4. the existing electric cooker is cleaned by disassembling parts, and has various steps and is inconvenient to quickly clean; 5. the existing reflux device realizes reflux under the action of gravity of liquid, and can splash onto the four walls of the pot body when the liquid falls freely, so that the pot body is not convenient to clean and food waste can be caused.

Disclosure of Invention

Based on the defects in the prior art mentioned in the background art, the invention provides the electric cooker with the circulating structure and the liquid leakage prevention function.

The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:

a circulation structure comprises a shell and a pot body arranged in the shell, wherein the circulation structure also comprises:

the pressure cylinder is fixedly arranged on the outer wall of the shell, the pressure cylinder is communicated with the pot body through a pressure relief pipe, and the pressure cylinder is used for relieving pressure on the pot body; and

the elastic movable assembly is arranged at the lower part of the pressure cylinder and connected with the outer wall of the shell, and is used for discharging overflowed fluid back into the pot body when the pressure in the pressure cylinder is increased and reducing the pressure in the pressure cylinder;

the pressure barrel is internally provided with a pressure assembly which is used for communicating the pressure barrel through a pressure relief pipe when the pressure in the pot body is increased.

As a further scheme of the invention: a heating disc which is contacted with the bottom of the pot body and used for heating the bottom of the pot body is arranged below the inner part of the shell, an embedded groove is vertically arranged on the inner side wall of the shell, and a guide bulge which is used for being embedded with the embedded groove in a sliding manner is arranged on the outer wall of the pot body;

and the upper part of the pot body is provided with a butt joint hole which is used for being in sealing fit with the end part of the pressure relief pipe.

As a still further scheme of the invention: the pressure assembly includes:

the mounting piece is horizontally fixed on the inner wall of the pressure cylinder;

the sealing swinging piece is rotatably arranged on the mounting piece and is in sealing fit with the port of the pressure relief pipe; and

one side of the torsion spring is connected with the sealing swinging piece, the other side of the torsion spring is connected with the mounting piece, and the torsion spring is used for elastically and rotatably connecting the sealing swinging piece and the mounting piece;

the torsion spring keeps a pressed state, and an exhaust pipe penetrates through the upper part of the pressure cylinder.

As a still further scheme of the invention: the elastic movable assembly includes:

the rubber plug is arranged below the inner part of the pressure barrel in a sealing and sliding manner;

the pushing piece penetrates through the bottom of the pressure cylinder and is sleeved with the pressure cylinder in a sliding mode, and the rubber plug is fixedly installed at the top of the pushing piece; and

the sleeve is vertically fixed on the outer wall of the shell, and the lower part of the pushing piece is sleeved in the sleeve; and

the pressing spring is arranged on the lower portion of the sleeve, the upper portion of the pressing spring is attached to the bottom of the pushing piece, and the pressing spring is in a pressed state.

As a still further scheme of the invention: the exhaust pipe is characterized in that a filter element for preventing fluid from being sprayed out of the exhaust pipe is fixed on the inner wall of the exhaust pipe, a plurality of filter holes are formed in the filter element at equal intervals, and a cleaning assembly for cleaning the filter element when the exhaust pipe exhausts air is rotatably arranged below the filter element.

As a still further scheme of the invention: the cleaning assembly includes:

the rotating shaft is rotatably arranged on the mounting piece, and the upper part of the rotating shaft extends into the lower part of the exhaust pipe and is coaxial with the exhaust pipe;

the spiral fan blade is fixed on the upper part of the rotating shaft and is used for driving the rotating shaft to rotate when air flow passes through the exhaust pipe at a high speed; and

the brush disc is fixed at the top of the rotating shaft, a plurality of bristles are uniformly arranged on the upper surface of the brush disc, and the bristles are attached to the lower surface of the filter element.

As a still further scheme of the invention: the upper portion inner wall of pressure cylinder is provided with the round and is used for right the spacing flange of rubber buffer the rear portion of pressure cylinder is opened and is dismantled and install sealed lid the edge of sealed lid be provided with the round with the packing ring of the tight laminating of pressure cylinder lateral wall.

As a still further scheme of the invention: pressure cylinder outer wall upper portion is safety assembly in addition, safety assembly includes that the sealed oscillating member of second pressure release pipe, second turn round, the second pivot, the second pressure release pipe sets up in the top of rubber buffer limit flange and link up the pressure cylinder inside and outside wall, the second pivot is passed through the connecting piece and is fixed on the pressure cylinder outer wall, the sealed oscillating member of second rotates and sets up in the second pivot and with the sealed laminating of pressure release output of second pressure release pipe, the second torsional spring sets up in the second pivot and coaxial with the second pivot, second torsional spring one end rocking arm is fixed on the pressure cylinder, and other end rocking arm is fixed on the sealed oscillating member of second, and the required torsional force of second torsional spring rocking arm motion is greater than the required torsional force of torsional spring rocking arm motion.

The electric cooker comprises the circulation structure and a cover body arranged at the upper part of the shell, wherein a plurality of buckles are arranged on the outer side wall of the cover body at equal intervals on the circumference, and a plurality of buckles are also arranged on the inner wall of the upper part of the shell at equal intervals on the circumference;

a circle of soft sealing layer is arranged on the inner edge of the shell.

At least two handles are fixed on the side wall of the cover body, the center of the outer wall of the shell is provided with an electric connection control panel of the heating plate, and a heating button and a heat preservation button are arranged on the control panel.

After adopting the structure, compared with the prior art, the invention has the following advantages: 1. when the pressure is released, the high-pressure air flow drives the rubber plug to move downwards, so that the pressure spring is driven to compress, a part of pressure released is shared, and the service life of the pressure cylinder is prolonged; 2. when the pressure is released, the high-pressure airflow drives the rubber plug to move downwards, so that the volume of fluid which can be stored in the pressure release cavity is increased, the phenomenon that the liquid overflows due to untimely backflow when the pressure is released and the liquid is brought out too much is avoided, and the waste of food is avoided; 3. when the fluid brought out by pressure relief cannot flow back in time, redundant fluid can be discharged through the second sealing swinging piece arranged on the outer wall of the pressure cylinder, the damage to the pressure cylinder and other parts caused by overlarge pressure of the pressure cylinder due to untimely backflow of the fluid is avoided, and the safety of the product is improved; 4. clear water is injected from the upper part and is discharged from the second pressure relief pipe, so that the device is quickly cleaned; 5. liquid is upwards promoted by the rubber buffer, flows back to the pot body through the pressure relief pipe connected with the side wall of the pot body, so that splashing of the liquid is avoided, the cleanness of the pot body is guaranteed, and meanwhile, the waste of food is avoided.

Drawings

Fig. 1 is a schematic view of the structure of the leakage-proof electric rice cooker.

FIG. 2 is a schematic view of the structure of the pan body and the guide protrusions and the docking holes in the circulation structure.

Fig. 3 is an enlarged structural view of the pressure cylinder and the elastic movable assembly in the circulation structure.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a top view of the caulking groove, the guide protrusion and the buckle in the leakage-proof electric rice cooker.

In the figure: 1-a housing; 2-a pot body; 3-pressure relief pipe; 4-a pressure cylinder; 5-sealing the oscillating piece; 6-torsion spring; 7-a mounting member; 8-a rotating shaft; 9-helical fan blades; 10-an exhaust pipe; 11-a filter element; 12-brushing the disc; 13-rubber plug; 14-a pusher member; 15-a sleeve; 16-a pressure spring; 17-a cover body; 18-a handle; 19-a control panel; 20-caulking groove; 21-a guide projection; 22-a docking hole; 23-buckling; 24-a second pressure relief tube; 25-a second sealing oscillating piece; 26-a second torsion spring; 27-second axis of rotation.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1 to 5, in an embodiment of the present invention, a circulation structure includes a housing 1 and a pot 2 disposed in the housing 1, wherein the circulation structure further includes:

the pressure cylinder 4 is fixedly arranged on the outer wall of the shell 1, the pressure cylinder 4 is communicated with the pot body 2 through a pressure relief pipe 3, and the pressure cylinder 4 is used for relieving pressure of the pot body 2; and

the elastic movable assembly is arranged at the lower part of the pressure cylinder 4 and is connected with the outer wall of the shell 1, and the elastic movable assembly is used for discharging overflowed fluid back into the pot body 2 when the pressure in the pressure cylinder 4 is increased and the pressure in the pressure cylinder 4 is reduced;

a pressure assembly is arranged in the pressure cylinder 4 and is used for communicating the pressure cylinder 4 through a pressure relief pipe 3 when the pressure in the pot body 2 is increased;

the pot body 2 is placed in the shell 1, the upper opening of the pot body 2 is sealed, the pot body 2 is heated by the shell 1, when fluid in the pot body 2 is heated and boiled, the pressure in the sealed pot body 2 is increased, the pressure in the pot body 2 is conducted to the pressure cylinder 4 through the pressure relief pipe 3 at the moment, and the pressure relief pipe 3 is driven to act to be communicated with the pressure cylinder 4, so that the effect of communicating the pot body 2 with the pressure cylinder 4 is achieved; after the pot body 2 is communicated with the pressure cylinder 4, the pressure cylinder 4 reduces the pressure of the pot body 2, and meanwhile, the elastic movable assembly acts to vacate a space to store overflowed fluid;

the pressure in the pot body 2 is gradually reduced, the pressure assembly gradually acts in the reverse direction, and meanwhile, the elastic movable assembly tends to reset to send the stored fluid into the pot body 2 again until the pressure assembly completely resets to separate the pot body 2 from the pressure cylinder 4.

In one embodiment of the invention, a heating plate which is contacted with the bottom of the pot body 2 and is used for heating the bottom of the pot body 2 is arranged below the inner part of the shell 1, a caulking groove 20 is vertically arranged on the inner side wall of the shell 1, and a guide bulge 21 which is used for being in sliding fit with the caulking groove 20 is arranged on the outer wall of the pot body 2;

the upper part of the pot body 2 is provided with a butt joint hole 22 which is used for being in sealing fit with the end part of the pressure relief pipe 3;

the heating plate is used for transferring heat to the pot body 2 for heating, and the relative position of the pot body 2 and the shell 1 is restrained by the matching of the caulking groove 20 and the guide protrusion 21, so that the pressure relief pipe 3 can be tightly attached to the butt joint hole 22 when the pot body 2 is seated into the shell 1.

In another embodiment of the present invention, the pressure assembly comprises:

the mounting piece 7 is horizontally fixed on the inner wall of the pressure cylinder 4;

the sealing swinging piece 5 is rotatably arranged on the mounting piece 7, and the sealing swinging piece 5 is in sealing fit with the port of the pressure relief pipe 3; and

the torsion spring 6 is connected with the sealing swinging piece 5 on one side and the mounting piece 7 on the other side, and the torsion spring 6 is used for elastically and rotatably connecting the sealing swinging piece 5 and the mounting piece 7;

the torsion spring 6 keeps a pressed state, and an exhaust pipe 10 penetrates through the upper part of the pressure cylinder 4;

the sealing swinging piece 5 is elastically and rotatably connected with the mounting piece 7 by means of the torsion spring 6, and the torsion spring 6 is kept in a pressed state, so that the sealing swinging piece 5 can be tightly attached to the end of the pressure relief pipe 3, the pressure relief pipe 3 is separated from the pressure barrel 4, the torsion spring 6 can be driven by the end of the pressure relief pipe 3 to be further compressed only after the pressure in the pot body 2 reaches a certain value, and the sealing swinging piece 5 is rotated and opened to communicate the pressure relief pipe 3 with the pressure barrel 4.

In yet another embodiment of the present invention, the elastically movable assembly includes:

the rubber plug 13, the said rubber plug 13 seals and slides and sets up in the inferior inside of the said pressure tube 4;

a pushing member 14, wherein the pushing member 14 penetrates through the bottom of the pressure cylinder 4 and is in sliding fit with the bottom of the pressure cylinder, and the rubber stopper 13 is fixedly arranged on the top of the pushing member 14; and

the sleeve 15 is vertically fixed on the outer wall of the shell 1, and the lower part of the pushing piece 14 is sleeved in the sleeve 15; and

the pressure spring 16 is arranged at the lower part of the sleeve 15, the upper part of the pressure spring 16 is attached to the bottom of the pushing piece 14, and the pressure spring 16 is in a pressed state;

the moving track of the pushing element 14 is restrained by the sleeve 15, so that the pushing element 14 can only do vertical linear motion, the elastic connection of the pushing element 14 and the sleeve 15 is realized by the arrangement of the pressure spring 16, and the elastic connection of the rubber plug 13 and the sleeve 15 is indirectly realized;

when the pressure in the pot body 2 is increased, the sealing swinging piece 5 is pushed to swing for a certain angle to enable the pressure relief pipe 3 to be communicated with the pressure cylinder 4, high-pressure gas in the pot body 2 is discharged into the pressure cylinder 4, the rubber plug 13 slides downwards along the inner wall of the pressure cylinder 4 by the high-pressure gas, and the pushing piece 14 is driven to move downwards to be seated in the sleeve 15 to further compress the pressure spring 16;

after the pressure in the pot body 2 is reduced, the pressure in the pressure barrel 4 is also reduced, the rubber plug 13 is enabled to move upwards under the action of the pressure spring 16, and then fluid overflowing from the pressure barrel 4 or fluid brought out by high-pressure gas is pushed to be discharged into the pot body 2 again through the pressure relief pipe 3 until the sealing swinging piece 5 isolates and disconnects the pressure relief pipe 3 from the pressure barrel 4.

In another embodiment of the present invention, a filter 11 for preventing fluid from being sprayed out of the exhaust pipe 10 is fixed on the inner wall of the exhaust pipe 10, a plurality of filter holes are equidistantly formed in the filter 11, and a cleaning assembly for cleaning the filter 11 when the exhaust pipe 10 exhausts air is rotatably disposed below the filter 11;

the filter element 11 can prevent the fluid matter overflowing from the pot body 2 or brought by the airflow from being brought out when the gas flowing at high speed is discharged through the exhaust pipe 10, the fluid is intercepted after passing through the filter element 11, so that the gas is discharged through the filter element 11, the fluid food stays below the exhaust pipe 10, and the fluid falls into the pressure cylinder 4 again under the driving of gravity after the speed of the airflow is reduced.

In yet another embodiment of the present invention, the cleaning assembly comprises:

a rotating shaft 8, wherein the rotating shaft 8 is rotatably arranged on the mounting member 7, and the upper part of the rotating shaft 8 extends into the lower part of the exhaust pipe 10 and is coaxial with the exhaust pipe 10;

the spiral fan blades 9 are fixed on the upper part of the rotating shaft 8, and the spiral fan blades 9 are used for driving the rotating shaft 8 to rotate when air flow passes through the exhaust pipe 10 at a high speed; and

the brush disc 12 is fixed at the top of the rotating shaft 8, a plurality of bristles are uniformly arranged on the upper surface of the brush disc 12, and the bristles are attached to the lower surface of the filter element 11;

when high-speed flowing gas passes through the exhaust pipe 10, the spiral fan blades 9 are driven to rotate, the rotating spiral fan blades 9 drive the rotating shaft 8 to rotate, and then the bristles on the brush disc 12 of the brush disc 12 are driven to rotate to clean the lower part of the filter element 11, so that the fluid intercepted by the filter element 11 is prevented from being adhered to the filter element 11 to cause blockage.

In another embodiment of the present invention, a ring of flange for limiting the rubber stopper 13 is disposed on the inner wall of the upper portion of the pressure cylinder 4, a sealing cover is detachably mounted on the rear portion of the pressure cylinder 4, and a ring of gasket tightly attached to the side wall of the pressure cylinder 4 is disposed on the edge of the sealing cover;

the stroke high point of the rubber plug 13 is restrained by the flange, the rubber plug 13 is prevented from interfering with the sealing swinging piece 5, and the detachable sealing cover can realize the regular cleaning of the inside of the pressure cylinder 4, so that the accumulation of fluid after long-term use is avoided.

In another embodiment of the present invention, there is also a safety assembly on the upper portion of the outer wall of the pressure cylinder 4, the safety assembly includes a second pressure relief pipe 24, a second sealing swinging member 25, a second torsion spring 26, and a second rotating shaft 27, the second pressure relief pipe 24 is disposed above the rubber stopper limiting flange and penetrates through the inner wall and the outer wall of the pressure cylinder 4, the second rotating shaft 27 is fixed on the outer wall of the pressure cylinder 4 through a connecting member, the second sealing swinging member 25 is rotatably disposed on the second rotating shaft 27 and is in sealing engagement with the pressure relief output end of the second pressure relief pipe 24, the second torsion spring 26 is disposed on the second rotating shaft 27 and is coaxial with the second rotating shaft 27, one end of the second torsion spring 26 is fixed on the pressure cylinder 4, and the other end of the second torsion spring 26 is fixed on the second sealing swinging member 25; in the using process, when residues brought by pressure relief block the filter screen 11, the continuously increased pressure drives the second sealing swinging piece 25 to rotate around the second rotating shaft 27, and the fluid is discharged through the second pressure relief pipe 24, so that the damage of the pressure cylinder 4 caused by the fluid overstocked on the pressure cylinder 4 due to the blockage of the filter screen 11 is prevented, the potential safety hazard is avoided, and meanwhile, clear water is introduced from the exhaust pipe and then discharged from the second pressure relief pipe, so that the cleaning of the filter element and the cleaning component is realized;

an electric cooker for preventing liquid leakage comprises the circulation structure of the embodiment, and further comprises a cover body 17 arranged at the upper part of the shell 1, wherein a plurality of buckles 23 are arranged on the outer side wall of the cover body 17 at equal intervals on the circumference, and a plurality of buckles 23 are also arranged on the inner wall of the upper part of the shell 1 at equal intervals on the circumference;

a circle of soft sealing layer is arranged on the inner edge of the shell 1;

after the cover body 17 is pressed into the shell 1, the cover body 17 is kept to be in sealing fit with the sealing layer and rotates for a certain angle, so that the two groups of buckles 23 on the shell 1 and the cover body 17 are mutually clamped, the cover body 17 and the shell 1 are sealed and fixed, and a sealing space is formed between the shell 1 and the cover body 7;

it should be noted that, after the pot body 2 is seated in the housing 1, the upper edge of the pot body 2 is attached to the sealing layer on the housing 1, so as to keep the pot body 2, the housing 1 and the cover 7 forming a closed cavity, and prevent leakage during heating.

In an embodiment of the present invention, at least two handles 18 are fixed on the side wall of the cover 17, and a control panel 19 electrically connected to the heating plate is installed in the center of the outer wall of the housing 1, and a heating button and a heat preservation button are arranged on the control panel 19;

the cover body 17 is convenient to rotate through the handle 18 and the cover body 17 is taken out from the shell 1 to open the pot body 2, and the control panel 19 is arranged to control the working state of the heating plate, so that the heating and heat preservation of food are convenient.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Claims

1. A circulation structure, includes shell (1) and sets up pot body (2) in shell (1), its characterized in that still includes:

the pressure cylinder (4) is fixedly arranged on the outer wall of the shell (1), the pressure cylinder (4) is communicated with the pot body (2) through a pressure relief pipe (3), and the pressure cylinder (4) is used for relieving pressure of the pot body (2); and

the elastic movable assembly is arranged at the lower part of the pressure cylinder (4) and is connected with the outer wall of the shell (1), and the elastic movable assembly is used for discharging overflowed fluid into the pot body (2) in a backflow mode when the pressure in the pressure cylinder (4) is increased and discharging the overflowed fluid into the pot body (2) when the pressure in the pressure cylinder (4) is reduced;

a pressure assembly is arranged in the pressure cylinder (4) and is used for communicating the pressure cylinder (4) through a pressure relief pipe (3) when the pressure in the pot body (2) is increased.

2. The circulating structure of claim 1, wherein a heating plate which is in contact with the bottom of the pot body (2) and is used for heating the bottom of the pot body (2) is arranged below the inner part of the shell (1), a caulking groove (20) is vertically arranged on the inner side wall of the shell (1), and a guide protrusion (21) which is used for being in sliding embedding with the caulking groove (20) is arranged on the outer wall of the pot body (2);

the upper part of the pot body (2) is provided with a butt joint hole (22) which is used for being in sealing fit with the end part of the pressure relief pipe (3).

3. A circulation structure, as claimed in claim 2, wherein the pressure assembly comprises:

the mounting piece (7), the said mounting piece (7) is fixed on the inboard wall of the said pressure tube (4) horizontally;

the sealing swinging piece (5) is rotatably arranged on the mounting piece (7), and the sealing swinging piece (5) is in sealing fit with the port of the pressure relief pipe (3); and

the sealing swinging piece (5) is connected with one side of the torsion spring (6), the mounting piece (7) is connected with the other side of the torsion spring (6), and the torsion spring (6) is used for elastically and rotatably connecting the sealing swinging piece (5) and the mounting piece (7);

the torsion spring (6) keeps a pressed state, and an exhaust pipe (10) penetrates through the upper part of the pressure cylinder (4).

4. A cycle according to claim 3, wherein said resiliently movable assembly comprises:

the rubber plug (13), the rubber plug (13) is arranged below the inside of the pressure barrel (4) in a sealing and sliding manner;

the pushing element (14) penetrates through the bottom of the pressure cylinder (4) and is in sliding fit with the bottom of the pressure cylinder, and the rubber plug (13) is fixedly arranged at the top of the pushing element (14); and

the sleeve (15), the said sleeve (15) is fixed on the outer wall of the said outer casing (1) vertically, the inferior part of the said impeller (14) is fitted over the said sleeve (15); and

the pressing spring (16) is arranged at the lower part of the sleeve (15), the upper part of the pressing spring (16) is attached to the bottom of the pushing piece (14), and the pressing spring (16) is in a pressed state.

5. A circulation structure according to claim 4, characterized in that a filter element (11) for preventing fluid from being ejected from the exhaust pipe (10) is fixed on the inner wall of the exhaust pipe (10), a plurality of filter holes are equidistantly formed in the filter element (11), and a cleaning component for cleaning the filter element (11) when the exhaust pipe (10) exhausts air is rotatably arranged below the filter element (11).

6. The endless structure of claim 5 wherein said cleaning assembly comprises:

the rotating shaft (8) is rotatably arranged on the mounting piece (7), and the upper part of the rotating shaft (8) extends into the lower part of the exhaust pipe (10) and is coaxial with the exhaust pipe (10);

the spiral fan blade (9) is fixed at the upper part of the rotating shaft (8), and the spiral fan blade (9) is used for driving the rotating shaft (8) to rotate when air flow passes through the exhaust pipe (10) at a high speed; and

the brush disc (12), the brush disc (12) is fixed the top of rotation axis (8) the upper surface of brush disc (12) evenly is provided with a plurality of brush hairs, the brush hair with the lower surface laminating of crossing filter core (11).

7. A cycle structure as claimed in claim 6, wherein the inner wall of the upper part of the pressure tube (4) is provided with a flange for limiting the rubber stopper (13), the rear part of the pressure tube (4) is provided with a sealing cover, and the edge of the sealing cover is provided with a gasket tightly attached to the side wall of the pressure tube (4).

8. A cycle structure as claimed in claim 7, characterized in that said pressure drum (4) has, above its outer wall, safety means, the safety assembly comprises a second pressure relief pipe (24), a second sealing swinging assembly (25), a second torsion spring (26) and a second rotating shaft (27), the second pressure relief pipe (24) is arranged above the rubber plug limiting flange and penetrates through the inner wall and the outer wall of the pressure barrel (4), the second rotating shaft (27) is fixed on the outer wall of the pressure cylinder (4) through a connecting piece, the second sealing swinging piece (25) is rotatably arranged on the second rotating shaft (27) and is in sealing fit with the pressure relief output end of the second pressure relief pipe (24), the second torsion spring (26) is arranged on the second rotating shaft (27) and is coaxial with the second rotating shaft (27), one end rotating arm of the second torsion spring (26) is fixed on the pressure cylinder (4), and the other end rotating arm is fixed on the second sealing swinging piece (25).

9. An electric cooker for preventing liquid leakage, which comprises the circulation structure of claim 8, and further comprises a cover body (17) arranged at the upper part of the casing (1), wherein a plurality of fasteners (23) are arranged on the outer side wall of the cover body (17) at equal intervals on the circumference, and a plurality of fasteners (23) are also arranged on the inner wall of the upper part of the casing (1) at equal intervals on the circumference;

a circle of soft sealing layer is arranged on the inner edge of the shell (1).

10. The electric rice cooker of claim 9, wherein at least two handles (18) are fixed on the side wall of the cover (17), a control panel (19) electrically connected with the heating plate is installed at the center of the outer wall of the casing (1), and a heating button and a heat preservation button are arranged on the control panel (19).