CN208755664U - A kind of return valve of cooking apparatus, steam valve module and cooking apparatus - Google Patents

Abstract

The utility model embodiment provides a kind of return valve of cooking apparatus, steam valve module and cooking apparatus, the return valve includes bottom plate (41) and sealing (42), the sealing (42) includes the elastic sealing strip (421) below bottom plate (41), the elastic sealing strip (421) is flexibly connected with the bottom plate (41), it is provided with return port (410) on the bottom plate (41), the shape of the elastic sealing strip (421) is matched with the shape of the return port (410).When the pressure anomaly in cooking apparatus increases; elastic deformation occurs for the elastic sealing strip (421) so as to be available for the gap (410b) that vapor stream flows through between the elastic sealing strip (421) and the return port (410); steam can be effectively discharged by the return valve; avoid pressure anomaly increase and bring is dangerous; play the role of safety relief, realizes overvoltage protection.

Description

A kind of return valve of cooking apparatus, steam valve module and cooking apparatus

Technical field

The utility model relates to electrical household appliance field more particularly to a kind of return valves of cooking apparatus, steam valve group Part and cooking apparatus.

Background technique

Existing normal pressure electric cooker is provided with a steam outlet in the upper cover of electric cooker, and electric cooker is in the mistake cooked Cheng Zhong, the steam of generation are directly discharged outside electric cooker through the outlet, i.e., the steam in electric cooker is constantly in exhaust condition, this Sample can take away large quantity of moisture and fragrance in rice, and the fragrance of rice and excess moisture is caused to be lost so that rice it is dry and It is not fragrant.The appearance of micro-pressure electric rice cooker and high pressure electric rice cooker, slows down the fragrance turnover rate and moisture rate of rice, but such electric meal It stews and has certain pressure, when the pressure control structure in electric cooker breaks down, there is very big risk.

Utility model content

In view of this, the utility model embodiment is intended to provide a kind of reflux of cooking apparatus with over-voltage protecting function Valve, steam valve module and cooking apparatus.

In order to achieve the above objectives, the first aspect of the utility model embodiment provides a kind of return valve of cooking apparatus, packet Include bottom plate and sealing, the sealing includes the elastic sealing strip below bottom plate, the elastic sealing strip with it is described Bottom plate is flexibly connected, and is provided with return port, the shape of the shape of the elastic sealing strip and the return port on the bottom plate Match；When the downside of the elastic sealing strip and the pressure difference of upper side are less than or equal to the first preset pressure, the elastic sealing strip It is separated with the return port；When the downside of the elastic sealing strip and the pressure difference of upper side are greater than the first preset pressure and are less than Equal to the second preset pressure, the elastic sealing strip seals the return port；When the downside and upside of the elastic sealing strip The pressure difference in face is greater than the second preset pressure, and elastic deformation occurs for the elastic sealing strip so that elastic sealing strip and the return port Between be available for the gap that air-flow flows through.

Further, the projection of the return port axially is rounded, and the elastic sealing strip is rounded, the reflux Difference DELTA L between the aperture of the bottom in hole and the outer diameter of the elastic sealing strip are as follows: 0 < Δ L≤5mm.

Further, the difference DELTA L between the aperture of the bottom of the return port and the outer diameter of the elastic sealing strip are as follows: 2≤ΔL≤3mm。

Further, the projection of shape of the return port axially is rounded, and the aperture of the return port is from bottom to up It is gradually reduced.

Further, the elastic sealing strip include sealed body and from the edge of the upper surface of the sealed body to The flange of upper protrusion, the upper surface of the flange are abutted with the bottom periphery of the return port.

Further, second preset pressure is 3000Pa.

Further, the return valve includes the mounting portion being fixedly connected with the bottom plate, and the mounting portion is provided with Under perforative mounting hole, the mounting hole and the return port are coaxially disposed；The sealing includes connector and stop configurations, The lower end of the connector is fixedly connected with the elastic sealing strip, and the stop configurations are provided with above the connector； The connector sliding is arranged in the mounting hole, and the elastic sealing strip is located at the lower section of the mounting portion, the backstop Structure is abutted with the upper surface of the mounting portion.

Further, the mounting portion is an integral molding structure with the bottom plate.

Further, the sealing is an integral molding structure.

Further, the material of the sealing is silica gel.

The second aspect of the utility model embodiment provides a kind of steam valve module of cooking apparatus, the steam valve module Including top casing element and lower shell, vapor chamber is constituted between the top casing element and the lower shell, the top casing element is provided with exhaust Mouthful, the lower shell is provided with air inlet, and the air inlet and the exhaust outlet are connected to the vapor chamber, the steam valve Component further includes any of the above-described kind of return valve, and the return port is connected to the vapor chamber, and the bottom plate is the lower shell.

The third aspect of the utility model embodiment provides a kind of cooking apparatus, including any of the above-described kind of steam valve group Part.

Further, the cooking apparatus is electric cooker or electric pressure cooking saucepan.

The return valve of the utility model embodiment, since the shape of the elastic sealing strip and the return port matches, Not only has the function of returned cold condensate, and when the intracorporal pressure anomaly of the pot of cooking apparatus increases, the elastic sealing strip Elastic deformation occurs so as to be available for the gap that vapor stream flows through between the elastic sealing strip and the return port, that is, leads to Steam can be effectively discharged by crossing the return valve, avoid pressure anomaly increase and bring is dangerous, play safety relief Overvoltage protection is realized in effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the micro-pressure electric rice cooker of the utility model embodiment；

Fig. 2 is the structural schematic diagram of the steam valve module of the utility model embodiment；

Fig. 3 is the partial structure diagram of steam valve module shown in Fig. 2；

Fig. 4 is the structural schematic diagram of the sealing of the utility model embodiment；

Fig. 5 is the partial enlargement diagram one in Fig. 2 at A, wherein elastic sealing strip seals return port；

Fig. 6 is the partial enlargement diagram two in Fig. 2 at A, wherein elastic sealing strip is separated with return valve, the side of arrow C To the flow direction for condensed water；And

Fig. 7 is the partial enlargement diagram three in Fig. 2 at A, wherein elastic deformation, the side of arrow B occur for elastic sealing strip To the flow direction for steam.

Description of symbols

100, steam valve module 100a, vapor chamber 10, top casing element 10a, exhaust outlet

20, lower shell 20a, air inlet 30, pressure control assembly 40, return valve

41, bottom plate 410, return port 410a, inner wall 42, sealing

421, elastic sealing strip 421a, flange 421b, sealed body 422, connector

423, stop configurations 43, mounting portion 43a, mounting hole 44, supporting structure

200, pot body 410b, gap

Specific embodiment

Noun of locality "upper", "lower" used in the utility model embodiment are itself when being directed to cooking apparatus normal use For structure.

The utility model embodiment provides a kind of cooking apparatus, referring to Fig. 1, the cooking apparatus include pot body 200 and For controlling the steam valve module 100 of the pressure in pot body 200.In the present embodiment, by taking cooking apparatus is micro-pressure electric rice cooker as an example It is described, it is to be understood that cooking apparatus is not limited to micro-pressure electric rice cooker, for example, it may be high pressure electric rice cooker, Voltage force Pot etc..

Steam valve module 100 forms pressure appropriate for controlling in cooking apparatus, for example, by the pressure in micro-pressure electric rice cooker Power maintains within 1.02 atmospheric pressure.Specifically, referring to Fig. 2, steam valve module 100 include top casing element 10, lower shell 20, Return valve 40 and pressure control assembly 30, constitute vapor chamber 100a between top casing element 10 and lower shell 20, top casing element 10 is arranged There are exhaust outlet 10a, exhaust outlet 10a to communicate with extraneous atmosphere；Lower shell 20 is provided with air inlet 20a, air inlet 20a and pot body It is communicated inside 200, air inlet 20a and exhaust outlet 10a are connected to vapor chamber 100a；Return valve 40 and pressure control assembly 30 are equal It is set on lower shell 20, will form condensed water into most of steam in vapor chamber 100a, return to pot body through return valve 40 In 200, to increase the moisture and fragrance of rice.

Referring to Fig. 5, return valve 40 includes bottom plate 41 and sealing 42, in the present embodiment, bottom plate 41 is lower shell 20.Return port 410 is provided on bottom plate 41, which is connected to vapor chamber 100a.Referring to Fig. 4, sealing 42 includes Elastic sealing strip 421, elastic sealing strip 421 are flexibly connected with bottom plate 41, shape and the return port 410 of elastic sealing strip 421 Shape matches." shape of elastic sealing strip 421 and the shape of return port 410 match " refers to elastic sealing strip 421 and the size of return port 410 need to keep suitable range so that elastic sealing strip 421 can cook rank in normal heating Section sealing return port 410, so that the steam in pot body 200 can not enter vapor chamber 100a from return port 410, but through pressure control Component 30 processed enters vapor chamber 100a；Progress flexible deformation when the pressure anomaly in pot body 200 increases is also required to simultaneously to make The edge of elastic sealing strip 421 is upturned into return port 410, and the edge of elastic sealing strip 421 is interior with return port 410 Gap 410b is generated between wall 410a, so that the steam in pot body 200 can be entered in vapor chamber 100a by gap 410b, To guarantee that the pressure in pot body 200 no longer increases extremely, achieve the purpose that safety relief.Specifically, when elastic sealing strip 421 The pressure difference of downside and upper side is less than or equal to the first preset pressure, for example, in the stage of cooking rice over a slow fire, referring to Fig. 6, pot body 200 Interior steam pressure is smaller, elastic sealing strip 421 in self gravity and under the pressure of condensed water, elastic sealing strip 421 with Return port 410 separates, at this point, elastic sealing strip 421 is located at the lower section of return port 410 and is spaced each other, the steam in pot body 200 It can be flowed back to by the liquefaction steam water that the return port 410 enters in vapor chamber 100a and in vapor chamber 100a through return port 410 In pot body 200, to increase the moisture of rice；It is preset when the downside of elastic sealing strip 421 and the pressure difference of upper side are greater than first Pressure difference and it is less than or equal to the second preset pressure, referring to Fig. 5, at this point, cooking apparatus belongs to normal operating conditions, for example, plus Heat is cooked the stage, this stage, and the steam pressure in pot body 200 is larger, so that elastic sealing strip 421 moves upwards, elastic packing Piece 421 seals return port 410, and the steam in pot body 200 enters vapor chamber through pressure control assembly 30 by air inlet 20a at this time 100a is controlled the pressure in pot body 200 by pressure control assembly 30；Downside and upper side when elastic sealing strip 421 Pressure difference is greater than the second preset pressure, referring to Fig. 7, at this point, cooking apparatus belongs to abnormal operating state, pressure control assembly 30 It may have occurred and that failure and steam can not normally be discharged, so that the pressure anomaly in pot body 200 increases, elastic sealing strip 421 Elastic deformation occurs so as to be available for the gap 410b that vapor stream flows through between elastic sealing strip 421 and return port 410, i.e., Steam can be effectively discharged by the return valve 40, avoid pressure anomaly increase and bring is dangerous, play safely let out The effect of pressure.

Above-mentioned the first preset pressure and the second preset pressure can be carried out according to the product type of actual cooking apparatus Setting.For example, the first preset pressure is 100Pa；For example, the second preset pressure is 3000Pa, i.e. about 0.03 atmospheric pressure, by It is communicated always with ambient atmosphere in the upper side of elastic sealing strip 421, therefore, the air pressure in pot body 200 is about 1.03 at this time Atmospheric pressure, the i.e. air pressure of the receiving of the downside of elastic sealing strip 421 are about 1.03 atmospheric pressure, elastic sealing strip 421 it is upper Bear 1 extraneous atmospheric pressure in side.Second preset pressure is Secure Threshold pressure difference, is more than the pressure difference, then implies cooking pot There are failures for tool, there is security risk.

In the present embodiment, referring to Fig. 3, the projection of shape of return port 410 axially is rounded.Elastic sealing strip 421 It is rounded.Difference DELTA L between the aperture of the bottom of return port 410 and the outer diameter of elastic sealing strip 421 are as follows: 0 < Δ L≤5mm, For example, difference DELTA L can be 1mm, 2mm, 3mm, 4mm or 5mm etc., the range of difference DELTA L can guarantee elastic sealing strip 421 Return port 410 can be effectively sealed against, it is default to be also greater than second in the downside of elastic sealing strip 421 and the pressure difference of upper side Reliably flexible deformation is carried out when pressure difference.When difference DELTA L is greater than 5mm, elastic sealing strip 421 is refluxed the lower end surface resistance in hole 410 Gear, cannot reliably carry out flexible deformation into return port 410.When difference DELTA L is too small, sealing performance will receive certain shadow It rings, therefore, further, difference DELTA L are as follows: 2≤Δ L≤3mm, the range make elastic sealing strip 421 both with close well Sealing property also has with reliable elastic deformability.The aperture of the bottom of return port 410 is less than elastic packing in the present embodiment The outer diameter 3mm of piece 421.

It should be noted that the difference between the aperture of the lower end of the return port 410 and the outer diameter of elastic sealing strip 421 It is worth Δ L, refers to that the outer diameter of elastic sealing strip 421 subtracts the resulting difference in aperture of the bottom of return port 410.

In order to guarantee that elastic sealing strip 421 can successfully carry out flexible deformation, and make deformed elastic sealing strip 421 can smoothly return back to undeformed state flows back referring to Fig. 5, the aperture of return port 410 is gradually reduced from bottom to up The inner wall 410a in hole 410 is in gradually intilted curved surface；When upwards flexible deformation occurs for elastic sealing strip 421, elasticity is close The edge of mounting 421 since the inner wall 410a of return port 410 gradually slopes inwardly from bottom to up, can make in recessed return port 410 Elastic sealing strip 421 the frictional resistance that enters in return port 410 of edge it is relatively small.And the pressure in the pot body 200 by After deteriorating to less than the second preset pressure greater than the second preset pressure, the work of the edge of elastic sealing strip 421 in natural resiliency power With lower downward return motion, since the inner wall 410a of return port 410 is inclined, so that the reply of elastic sealing strip 421 Journey frictional resistance is small, and the inner wall 410a that the edge of elastic sealing strip 421 will not be refluxed hole 410 is blocked, so that elasticity is close Mounting 421 can smoothly return back to undeformed state.

Further, referring to Fig. 5, for the ease of sealing 42 installation, return valve 40 includes and bottom plate 41 is fixed connects The mounting portion 43 connect, perforative mounting hole 43a up and down is provided on mounting portion 43, and mounting hole and return port are coaxially disposed.Installation Portion 43 can select suitable position according to the actual situation.For example, in the present embodiment, mounting portion 43 is located in return port 410 The heart, i.e. mounting hole 43a are located at the center of return port 410.Referring to Fig. 2, mounting portion 43 is either pass through supporting structure 44 connect with bottom plate 41, are also possible to be an integral molding structure with bottom plate 41.

Referring to Fig. 4, sealing 42 further comprises connector 422 and stop configurations 423, the lower end of connector 422 It is fixedly connected with elastic sealing strip 421；The upper end of connector 422 connects stop configurations 423, and the sliding of connector 422 is arranged in peace It filling in the 43a of hole, elastic sealing strip 421 is located at the lower section of mounting portion 43, and stop configurations 423 are abutted with the upper surface of mounting portion 43, To prevent connector 422 to be detached from mounting hole 43a under the effect of gravity.When connector 422 is slided relative to mounting hole 43a, band Dynamic elasticity diaphragm seal 421 is moved relative to bottom plate 41, and realization elastic sealing strip 421 is flexibly connected with bottom plate 41.Stop configurations 423 specific structure is unlimited, as long as it can prevent connector 422 from falling off from mounting hole 43a.Further, elastic packing Piece 421 includes the sealed body 421b and flange 421a to raise upward from the edge of the upper surface of sealed body 421b, flange The upper surface of 421a is abutted with the bottom periphery of return port 410, i.e., elastic sealing strip 421 is by flange 421a to return port 410 are sealed.Flange 421a strengthens the structural strength of elastic sealing strip 421, has both guaranteed elastic sealing strip 421 in non-ballistic Property deformation when sealing performance, and guarantee carry out reliable flexible deformation at suitable pressures.

Sealing 42 can be integrated formed structure, i.e. elastic sealing strip 421, connector 422 and stop configurations 423 are Integrated formed structure.Certainly, elastic sealing strip 421, connector 422 and stop configurations 423 are also possible to using split type knot Structure is fixedly connected between each other.

The material of elastic sealing strip 421 can be selected elasticity preferably, the preferable and environmentally friendly material of sealing performance, for example, can be with It is silica gel material.Further, connector 422 and stop configurations 423 also use silica gel material, i.e., entire sealing 42 uses Silica gel material.

The course of work of the micro-pressure electric rice cooker of the utility model embodiment is as follows:

When normal work, pressure control assembly 30 makes the liquid boiling in electric cooker in " minute-pressure " state, pot body 200 The steam of generation, a part is discharged to the external world, while most of steam is capable of forming condensed water and is passed through in vapor chamber 100a Return valve 40 returns in pot body 200, to reduce the amount of discharge steam, improves the moisture content and fragrance of rice.Pressure control When 30 failure of component processed, electric cooker is in abnormal operating state, and steam can not normally be discharged, so that the pressure in pot body 200 It constantly increases, when the pressure difference of the downside of elastic sealing strip 421 and upper side reaches the second preset pressure, referring to Fig. 7, bullet Property diaphragm seal 421 occur elastic deformation, discharge pot body 200 in pressure, play decompression protection function, can be avoided pot body 200 Interior pressure is excessive and bring security risk.

The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model Range.

Claims (13)

1. a kind of return valve of cooking apparatus, which is characterized in that including bottom plate (41) and sealing (42), the sealing It (42) include the elastic sealing strip (421) being located at below bottom plate (41), the elastic sealing strip (421) and the bottom plate (41) are living It is dynamic to connect, it is provided with return port (410) on the bottom plate (41), the shape of the elastic sealing strip (421) and the return port (410) shape matching；It is preset when the downside of the elastic sealing strip (421) and the pressure difference of upper side are less than or equal to first Pressure difference, the elastic sealing strip (421) separate with the return port (410)；When the elastic sealing strip (421) downside with The pressure difference of upper side is greater than the first preset pressure and is less than or equal to the second preset pressure, elastic sealing strip (421) sealing The return port (410)；When the elastic sealing strip (421) downside and upper side pressure difference be greater than the second preset pressure, Elastic deformation occurs for the elastic sealing strip (421) so that in the presence of can between elastic sealing strip (421) and the return port (410) The gap (410b) flowed through for air-flow.

2. return valve according to claim 1, which is characterized in that the projection of the return port (410) axially is in circle Shape, the elastic sealing strip (421) is rounded, the aperture and the elastic sealing strip (421) of the bottom of the return port (410) Outer diameter between difference DELTA L are as follows: 0 < Δ L≤5mm.

3. return valve according to claim 2, which is characterized in that the aperture of the bottom of the return port (410) with it is described Difference DELTA L between the outer diameter of elastic sealing strip (421) are as follows: 2≤Δ L≤3mm.

4. return valve according to claim 1-3, which is characterized in that the return port (410) is axially Projection of shape is rounded, and the aperture of the return port (410) is gradually reduced from bottom to up.

5. return valve according to claim 1-3, which is characterized in that the elastic sealing strip (421) includes close Envelope main body (421b) and the flange (421a) to raise upward from the edge of the upper surface of the sealed body (421b), it is described convex The upper surface of edge (421a) is abutted with the bottom periphery of the return port (410).

6. return valve according to claim 1, which is characterized in that second preset pressure is 3000Pa.

7. return valve according to claim 1, which is characterized in that the return valve (40) includes solid with the bottom plate (41) Surely the mounting portion (43) connected, the mounting portion (43) are provided with perforative mounting hole (43a) up and down, the mounting hole (43a) It is arranged with the return port coaxial (410)；The sealing (42) includes connector (422) and stop configurations (423), the company The lower end of fitting (422) is fixedly connected with the elastic sealing strip (421), is provided with above the connector (422) described Stop configurations (423)；Connector (422) sliding is arranged in the mounting hole (43a), the elastic sealing strip (421) Positioned at the lower section of the mounting portion (43), the stop configurations (423) abut with the upper surface of the mounting portion (43).

8. return valve according to claim 7, which is characterized in that the mounting portion (43) is integrated with the bottom plate (41) Molding structure.

9. return valve according to claim 1, which is characterized in that the sealing (42) is an integral molding structure.

10. return valve according to claim 9, which is characterized in that the material of the sealing (42) is silica gel.

11. a kind of steam valve module of cooking apparatus, the steam valve module (100) includes top casing element (10) and lower shell (20), vapor chamber (100a) is constituted between the top casing element (10) and the lower shell (20), the top casing element (10) is provided with Exhaust outlet (10a), the lower shell (20) are provided with air inlet (20a), the air inlet (20a) and the exhaust outlet (10a) It is connected to the vapor chamber (100a), which is characterized in that the steam valve module further includes any one of claim 1-10 institute The return valve stated, the return port (410) are connected to the vapor chamber (100a), and the bottom plate (41) is the lower shell (20)。

12. a kind of cooking apparatus, which is characterized in that including the steam valve module described in claim 11.

13. cooking apparatus according to claim 12, which is characterized in that the cooking apparatus is electric cooker or Voltage force Pot.