CN208876069U - Cooking equipment and its upper cover - Google Patents

Abstract

It includes: channel that the utility model, which provides a kind of cooking equipment and its upper cover, the upper cover of cooking equipment,；Float is located in channel, and can have positive seal position and negative-pressure sealing position along channel-active, float；Positive seal circle, float are tightly connected when being in positive seal position by positive seal circle and channel, are connected to the space of channel two sides mutually not；Negative-pressure dense seal, float are tightly connected when being in negative-pressure sealing position by negative-pressure dense seal and channel, are connected to the space of channel two sides mutually not.The upper cover of cooking equipment provided by the utility model, it is able to achieve float and is able to carry out sealing in positive and negative pressure sealing station, it is allowed to the two way seal function of having under positive pressure, negative pressure, solves the problems, such as that conventional float only has positive seal ability, is difficult to take into account negative-pressure sealing performance.

Description

Cooking equipment and its upper cover

Technical field

The utility model relates to kitchen utensils fields, upper cover and a kind of culinary art in particular to a kind of cooking equipment Equipment.

Background technique

At work, pot is interior in different time sections for the cooking equipments such as the electric pressure cooking saucepan of existing achievable positive and negative pressure culinary art When or be positive pressure or be negative pressure, in the process of implementing the utility model, inventor's discovery is the prior art has the following problems: often The float of rule such as pressure cooker cooking equipment only has the ability of positive seal, only can be carried out the sealing of single direction, is realizing When positive and negative pressure is cooked, expected efficiency can not be reached.

Utility model content

At least one in order to solve the above-mentioned technical problem, one of the utility model is designed to provide a kind of cooking equipment Upper cover.

Another of the utility model is designed to provide a kind of cooking equipment of upper cover with above-mentioned cooking equipment.

To achieve the above object, the embodiment of the utility model first aspect provides a kind of upper cover of cooking equipment, packet It includes: channel；Float is located in the channel, and can have positive seal position and negative pressure along the channel-active, the float Sealing station；Positive seal circle is led to by the positive seal circle with described when the float is in the positive seal position Road is tightly connected, and is connected to the space of the channel two sides mutually not；Negative-pressure dense seal, the float are in the negative-pressure sealing position It is tightly connected when setting by the negative-pressure dense seal and the channel, is connected to the space of the channel two sides mutually not.

The upper cover of the utility model cooking equipment provided by the above embodiment is equipped with positive seal circle, to be in when float Sealing is realized using positive seal circle when positive seal position, steam in cooking cavity is avoided to leak out, and is met under normal conditions Positive seal function, in addition, be additionally provided with negative-pressure dense seal, to utilize negative-pressure dense seal when float is in negative-pressure sealing position It realizes sealing, external steam is avoided to enter cooking cavity, it is ensured that the operation to pumping efficiency in pot, and when promoting the negative pressure stage in pot Efficiency, and the design achieves floats to be able to carry out sealing in positive and negative pressure sealing station, is allowed to have under positive pressure, negative pressure Two way seal function solves the problems, such as that conventional float only has positive seal ability, is difficult to take into account negative-pressure sealing performance.

In addition, the upper cover of the cooking equipment in above-described embodiment provided by the utility model can also have additional skill as follows Art feature:

In above-mentioned technical proposal, the upper cover of the cooking equipment further include: delivery valve seat is equipped with mounting hole；Cover board is equipped with Float hole, the float hole and the mounting hole are correspondingly arranged to limit the channel jointly.

In the present solution, keeping the mounting hole on delivery valve seat corresponding with the float hole on cover board limited jointly for float Movable channel, in this way, when float is in the position between positive seal position and negative-pressure sealing position, the sky of channel two sides Between be connected to, make gas in the cooking cavity limited by cover plate for sealing that can carry out outlet by exhaust valve, can keep away in this way Exempt from gas and leak into problem inside upper cover, such as gas is avoided to leak at the position between cover board and inner cover, to avoid Upper cover internal structure avoids by steam corrosion and bred bacterium inside upper cover, in addition also relative reduction seal request, letter Change the sealing structure inside upper cover, reduces product cost.

In above-mentioned technical proposal, the float is located at the outside diameter d 1 of the part in the channel and the aperture of the mounting hole D2 meets: d2+0.5mm≤d1≤d2+4mm；And/or

The float is located at the outside diameter d 1 of the part in the channel and the aperture d5 in the float hole meets: d5+0.5mm ≤d1≤d5+4mm。

In the present solution, design float is located at the outside diameter d 1 of the part in channel and the aperture d2 satisfaction of mounting hole: d2+ 0.5mm≤d1≤d2+4mm namely float are located at the part in channel and form the gap value of 0.5mm~4mm between mounting hole, It can guarantee that float can be moved up and down swimmingly along channel in cooking process in this way, and the design can ensure that float and mounting hole are protected Higher concentricity is held, to ensure accurate contraposition between float, negative-pressure dense seal and delivery valve seat, it is ensured that the negative-pressure sealing of float Circle contacts well with delivery valve seat, so that lift-off seal effect, guarantees normally to take out negative pressure with this.

Design float is located at the outside diameter d 1 of the part in channel and the aperture d5 in float hole meets: d5+0.5mm≤d1≤d5 + 4mm namely float are located at the gap value that 0.5mm~4mm is formed between the part and float hole in channel, can guarantee cook in this way Float can be moved up and down swimmingly along channel during preparing food, and the design can ensure that float keeps higher coaxial with float hole Degree, to ensure accurate contraposition between float, positive seal circle and cover board, it is ensured that the positive seal circle of float contacts good with cover board It is good, to promote positive seal effect, avoid the problems such as steam leaks in cooking process.

In any of the above-described technical solution, the float is equipped with steam channel, and the float is in the positive seal position When setting the position between the negative-pressure sealing position, the steam channel by below the cover board space and the exhaust valve The space connection of seat top, when the float is in the positive seal position, the float hole is close by the positive seal circle Envelope, and the steam channel is connected to the space above the delivery valve seat, is not connected to the space below the cover board, it is described When float is in the negative-pressure sealing position, the mounting hole is sealed by the negative-pressure dense seal, and the steam channel and institute The space connection below cover board is stated, is not connected to the space above the delivery valve seat.

In the present solution, designing steam channel, on float to be in positive seal position and negative-pressure sealing position when float When position between setting, the space below cover board is connected to the space above delivery valve seat using steam channel, it in this way can be with Prevent gap of a large amount of steam between float and mounting hole and float and float hole from passing through, it can be to avoid float caused by blocking Clamping stagnation problem, it is ensured that float along channel-active smoothness, to guarantee that the control of equipment positive/negative-pressure is sensitive, accurate, and the structure Exhaust efficiency it is also higher, it can be achieved that promoted exhaust efficiency, particularly between float and mounting hole and float and float hole Fit clearance there is the occasion being strict with, realize take into account promoted float and mounting hole to it is neutral, promote float and float Hole is to neutral and promotion exhaust efficiency purpose.

When float is in positive seal position, float hole is sealed by positive seal circle, and steam channel and delivery valve seat The space of top is connected to, and is not connected to the space below cover board, to ensure to block the connection between exhaust valve and cooking cavity, is prevented Steam in cooking cavity leaks out.

When float is in negative-pressure sealing position, mounting hole is sealed by negative-pressure dense seal, and below steam channel and cover board Space connection, be not connected to the space above delivery valve seat, to ensure to block the connection between exhaust valve and cooking cavity, realize Efficiently take out negative pressure.

More specifically, float interior design is hollow structure, and steam channel is constructed by the hollow structure, and the steam Channel further includes the first opening and the second opening on float, when float is between positive seal position and negative-pressure sealing position Position when, positive seal circle and negative-pressure dense seal are all not in sealing state, and the first opening and the second opening are exposed in channel Outside, at this point, the space above delivery valve seat is connected to by the first opening with steam channel, second is open the cooking cavity below cover board It is connected to steam channel, when float is in positive seal position, float hole is sealed by positive seal circle, and the second opening is located at floating To be connected to the cooking cavity below cover board in sub-aperture, realize that steam channel is not connected to the cooking cavity below cover board, it is real Now the space above delivery valve seat and the cooking cavity below cover board are disconnected, when float is in negative-pressure sealing position, mounting hole It is sealed by negative-pressure dense seal, the first opening is located to be connected to the space above delivery valve seat in mounting hole, realizes and steams Vapour channel is not connected to the space above delivery valve seat, and the space above delivery valve seat and the cooking cavity below cover board are broken in realization It opens.

In a technical solution of the utility model, the negative-pressure dense seal is connected on the float, the float When in the negative-pressure sealing position, the periphery position of the negative-pressure dense seal and the mounting hole is tightly connected against formation, When the float leaves the negative-pressure sealing position, the negative-pressure dense seal is separated with the periphery position of the mounting hole.

In the present solution, being arranged negative-pressure dense seal on float, float is made to drive negative-pressure dense seal and delivery valve seat Mounting hole periphery position against with sealing, or be allowed to the mounting hole periphery position of delivery valve seat separate with realization be connected to, have Structure is simple, sealing be connected between the flexible accurate advantage of switching control.

In above-mentioned technical proposal, the delivery valve seat be equipped with abutment face, the negative-pressure dense seal be used for it is described against Face against position outside diameter d 3 and the abutment face outside diameter d 4 meet: d4 > d3.

In the present solution, setting negative-pressure dense seal be used for and abutment face against position outside diameter d 3 and abutment face outer diameter D4 meets: d4 > d3, it can be ensured that the mounting hole periphery location contacts of negative-pressure dense seal and delivery valve seat are good, it is ensured that sealing effect Fruit is excellent, caused leakage problem when preventing a small amount of deviation of negative-pressure dense seal.

In above-mentioned technical proposal, an aperture of the mounting hole is located on the abutment face, and the hole of the mounting hole The diameter d2 and d3 meets: d3 > d2.

In the present solution, an aperture of mounting hole is located on abutment face, and the aperture d2 of mounting hole and negative-pressure dense seal For with abutment face against position outside diameter d 3 meet: d3 > d2, it can be ensured that the installation of negative-pressure dense seal and delivery valve seat Hole periphery location contacts are good, and ensure that an aperture of mounting hole is located at the inside of negative-pressure dense seal butting section position, it is ensured that close Excellent effect is sealed, caused leakage problem when preventing a small amount of deviation of negative-pressure dense seal.

In a technical solution of the utility model, the negative-pressure dense seal includes socket part and connects with the socket part The skirt portion connect, the socket part are connect with the float seal, when the float is in the negative-pressure sealing position, the skirt The periphery position of edge and the mounting hole against.

In the present solution, setting negative-pressure dense seal includes socket part and skirt portion connect with socket part, socket part with float Son is tightly connected, and skirt portion is used for the periphery position with mounting hole against being sealed, and in such structure, skirt portion is subject to Styling power is small, can more fully deform with lift-off seal effect, and the design also have structure it is simple, to negative-pressure dense seal Fixed reliable advantage, wherein it is highly preferred that socket part is an integral structure with skirt portion.

In a technical solution of the utility model, the skirt portion is configured to horn-like.

In the present solution, can be imitated in this way with lifting negative pressure sealing ring to the sealing in channel by skirt cage structure at horn-like Fruit, and horn-like skirt portion has preferably rebound effect, conducive to the reliability of lifting negative pressure sealing ring, and is conducive to extend negative The service life of pressure seal ring.

Certainly, this programme is not limited thereto, those skilled in the art according to demand can also by negative-pressure sealing ring structure at The negative-pressure sealing coil structures of the gasket shape of general planar, the gasket shape are simple, convenient processing and manufacture, and gasket shape is negative Pressure seal ring surface texture is smooth, is not easy to shelter evil people and countenance evil practices, and can promote product wholesomeness.

In any of the above-described technical solution, the negative-pressure dense seal nesting is mounted on the float, wherein on the float Equipped with stop bit protrusion, one end of the negative-pressure dense seal is resisted against in the stop bit protrusion and/or the float is equipped with stop bit Groove, the negative-pressure dense seal are equipped with the embedded division being nested with the stop bit groove.

In the present solution, designing stop bit protrusion and negative-pressure dense seal on float against can be right using the stop bit protrusion Negative-pressure sealing encloses good axial limiting effect, and poor sealing problem caused by preventing suction surface sealing ring from channeling bit guarantees Pumping efficiency, and using stop bit protrusion and negative-pressure dense seal against the close of negative-pressure dense seal and float connecting portion can be extended Road closure diameter, avoids steam from leaking from the connecting portion of negative-pressure dense seal and float, guarantees pumping efficiency；Stop bit is set on float Groove, the embedded division that setting is nested with stop bit groove in negative-pressure dense seal, can be right using the structure that the two is mutually twisted Negative-pressure sealing encloses good axial limiting effect, and poor sealing problem caused by preventing suction surface sealing ring from channeling bit guarantees Pumping efficiency, and be engaged using stop bit groove with the embedded division of negative-pressure dense seal, negative-pressure dense seal can be extended and connect with float The sealed pathway at position avoids steam from leaking from the connecting portion of negative-pressure dense seal and float, guarantees pumping efficiency.

In a technical solution of the utility model, the negative-pressure dense seal is connected on the delivery valve seat, described When float is in the negative-pressure sealing position, the negative-pressure dense seal and the float are tightly connected against formation, the float When leaving the negative-pressure sealing position, the negative-pressure dense seal is separated with the float.

In the present solution, negative-pressure dense seal is connected on delivery valve seat, in this way, negative-pressure dense seal is with float activity, It is tightly connected by being formed when float activity to negative-pressure sealing position with negative-pressure dense seal against to realize, float is floating in the structure Dynamic resistance is small, and activity is more flexible, control is more acurrate, and since negative-pressure dense seal position is fixed in the structure, deviation risk of leakage Property it is smaller, more conducively guarantee sealing effect.

In above-mentioned technical proposal, the negative-pressure dense seal is equipped with aperture corresponding with the mounting hole, and the float is worn It is connected to the aperture, wherein the float is equipped with flange, when the float is in the negative-pressure sealing position, the method Blue side, which blocks the mounting hole and compresses the negative-pressure dense seal, forms sealed connection.

In the present solution, aperture is arranged in negative-pressure dense seal so that float is along the axial activity of aperture, set on float There is flange, float is made to block mounting hole when being located at negative-pressure sealing position and compresses negative-pressure dense seal formation sealed connection, the knot Structure is simple, and reliable with the sealed connection of mounting hole, is conducive to guarantee pumping efficiency.

In above-mentioned technical proposal, when the float is in the negative-pressure sealing position, it is located at the position of the tapping Outer diameter D 3 and the aperture aperture D1 meet: D1 >=D3+1mm.

In the present solution, design float be in negative-pressure sealing position when, positioned at tapping position outer diameter D 3 with open The aperture D1 in hole meets: when D1 >=D3+1mm namely float are in negative-pressure sealing position, at least 1mm is formed between aperture Gap value, to guarantee that float can be moved up and down swimmingly in cooking process.

In above-mentioned technical proposal, the aperture d5 in the aperture D1 of the aperture and the float hole meets: D1 < d5.

In the present solution, the aperture d5 that the aperture D1 of design aperture is less than float hole meets: D1 < d5 can ensure that negative with this Pressure seal ring sealed reliable, it is ensured that pumping high efficiency.

In any of the above-described technical solution, the delivery valve seat is equipped with convex edge, and negative-pressure dense seal outer is equipped with flange, The flange is hooked on the convex edge.

In the present solution, being equipped with convex edge on design delivery valve seat, negative-pressure dense seal outer is equipped with flange, and flange is hooked in convex edge On to realize negative-pressure dense seal and delivery valve seat reliable location and limit, prevent poor sealing caused by negative-pressure dense seal deviation from asking Topic, it is ensured that negative-pressure dense seal is reliable to the mounting hole and float seal of delivery valve seat, it is ensured that pumping high efficiency.

In any of the above-described technical solution, the positive seal circle is mounted on the float or positive seal circle peace On the cover board.

In above-mentioned technical proposal, in the case of the positive seal circle is mounted on the float, the float is in When the positive seal position, the periphery position in the positive seal circle and the float hole is against being sealed, the float When leaving the positive seal position, the positive seal circle is separated with the periphery position in the float hole.

In the present solution, designing the periphery position in positive seal circle and float hole against to realize float and float hole position It is tightly connected, may be implemented to prevent steam slot leakage between float and float hole in this way, while realizing blocking steam channel With the connected relation between the cooking cavity below cover board, the outside gas leakage of cooking cavity is avoided, it is accurate to be conducive to the control of cooking cavity internal pressure.

In above-mentioned technical proposal, cambered surface mistake is formed between the hole wall in the float hole and the periphery position in the float hole It crosses, wherein the float hole is located at the aperture d6 at the position of the cambered surface outer and is used to float with described with the positive seal circle The internal diameter d7 of sub-aperture periphery position contact position meets: d6+0.5mm≤d7≤d6+20mm.

In the present solution, the internal diameter d7 that design float hole is located at aperture d6 and positive seal circle at the position of cambered surface outer expires Foot: d6+0.5mm≤d7≤d6+20mm can prevent a small amount of deviation of float from causing so that float has certain deviation allowance Positive seal circle is at float hole the problem of poor sealing, it is ensured that the cooking cavity sealing reliability below cover board.

The embodiment of the utility model second aspect provides a kind of cooking equipment, comprising: in any of the above-described technical solution The upper cover of the cooking equipment；Pot body, the upper cover can close with the pot body lid and set out cooking cavity to enclose；Air extractor, For the gas in the cooking cavity to be extracted out.

The utility model cooking equipment provided by the above embodiment, by being provided with described in any of the above-described technical solution The upper cover of cooking equipment, to have all of the above beneficial effect, details are not described herein.

Optionally, the cooking equipment is micro-pressure electric rice cooker or electric pressure cooking saucepan.

The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this The practice of type is recognized.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the schematic perspective view of cooking equipment described in the utility model one embodiment；

Fig. 2 is the partial structural diagram of cooking equipment described in the utility model one embodiment；

Fig. 3 is the schematic cross-sectional view of cooking equipment described in the utility model one embodiment；

Fig. 4 a is the enlarged structure schematic diagram of A portion shown in Fig. 3；

Fig. 4 b is the relative dimensions schematic diagram at each position of structure shown in Fig. 4 a；

Fig. 5 is the structural schematic diagram of structure described in Fig. 4 a in the other state；

Fig. 6 is the schematic cross-sectional view of the upper cover part of cooking equipment described in the utility model one embodiment；

Fig. 7 is the structural schematic diagram of structure described in Fig. 6 in the other state；

Fig. 8 is the schematic cross-sectional view of the upper cover part of cooking equipment described in the utility model one embodiment；

Fig. 9 is the structural schematic diagram of structure described in Fig. 8 in the other state.

Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 1 into Fig. 9 are as follows:

10 floats, 11 steam channels, 12 first openings, 13 second openings, 14 stop bits protrusion, 15 stop bit grooves, 16 flanges Side, 17 closeouts, 20 positive seal circles, 30 negative-pressure dense seal, 31 socket parts, 32 skirt portions, 33 embedded divisions, 34 apertures, 35 turn over Side, 40 delivery valve seats, 41 mounting holes, 42 abutment faces, 43 convex edges, 50 cover boards, 51 float holes, 52 cambered surfaces, 60 inner covers, 70 outer covers, 80 pot bodys, 81 cooker bodies, pot in 82,90 air extractors, 91 tracheaes, 92 valves, 93 bleeding points.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are explained in the following description in order to fully understand the utility model, still, this is practical Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously It is not limited by the specific embodiments disclosed below.

Cooking equipment and its upper cover according to the utility model some embodiments are described referring to Fig. 1 to Fig. 9.

As shown in Figures 1 to 9, the upper cover for the cooking equipment that the embodiment of the utility model first aspect provides, comprising: logical Road, float 10, positive seal circle 20 and negative-pressure dense seal 30.

Specifically, float 10 is located in channel, and can have positive seal position and negative-pressure dense along channel-active, float 10 Seal position；As shown in Fig. 5, Fig. 7 and Fig. 9, float 10 is sealed when being in positive seal position by positive seal circle 20 and channel Connection, is connected to the space of channel two sides mutually not；As shown in Fig. 4 a, Fig. 4 b, Fig. 6 and Fig. 8, float 10 is in negative-pressure sealing position When be tightly connected by negative-pressure dense seal 30 and channel, be connected to the space of channel two sides mutually not.

The upper cover of the utility model cooking equipment provided by the above embodiment is equipped with positive seal circle 20, to work as float 10 Sealing is realized using positive seal circle 20 when in positive seal position, steam in cooking cavity is avoided to leak out, and is met usual In the case of positive seal function, in addition, negative-pressure dense seal 30 is additionally provided with, to utilize when float 10 is in negative-pressure sealing position Sealing is realized in negative-pressure dense seal 30, avoids external steam from entering cooking cavity, it is ensured that pumping efficiency in pot, and to promote negative pressure in pot The operational efficiency when stage, and the design achieves floats 10 to be able to carry out sealing in positive and negative pressure sealing station, is allowed to have Two way seal function under positive pressure, negative pressure, solving conventional float 10 only has positive seal ability, is difficult to take into account negative-pressure sealing The problem of energy.

In one embodiment of the utility model, as shown in figs. 3 to 9, the upper cover of cooking equipment further includes exhaust valve Seat 40 and cover board 50, specifically, delivery valve seat 40 are equipped with mounting hole 41；Cover board 50 is equipped with float hole 51, float hole 51 and installation Hole 41 is correspondingly arranged to limit channel jointly.

In the present solution, keeping the mounting hole 41 on delivery valve seat 40 corresponding with the float hole 51 on cover board 50 to limit jointly Out for the movable channel of float 10, in this way, when float 10 is in the position between positive seal position and negative-pressure sealing position, The space of channel two sides is connected to, and the gas for making to seal by cover board 50 in limited cooking cavity can be outer by exhaust valve progress Row, can leak into the problem inside upper cover, such as gas is avoided to leak between cover board 50 and inner cover 60 to avoid gas in this way Position at, so as to avoid upper cover internal structure by steam corrosion, and avoid and breed bacterium inside upper cover, it is in addition also opposite Seal request is reduced, the sealing structure inside upper cover is simplified, reduces product cost.

In one embodiment of the utility model, as shown in figures 4 a and 4b, float 10 is located at the part in channel The aperture d2 of outside diameter d 1 and mounting hole 41 meets: d2+0.5mm≤d1≤d2+4mm.

In the present solution, design float 10 is located at the outside diameter d 1 of the part in channel and the aperture d2 satisfaction of mounting hole 41: D2+0.5mm≤d1≤d2+4mm namely float 10 are located at the part in channel and form 0.5mm~4mm's between mounting hole 41 Gap value can guarantee that float 10 can be moved up and down swimmingly along channel in cooking process in this way, and the design can ensure that float 10 Higher concentricity is kept with mounting hole 41, to ensure accurate contraposition between float 10, negative-pressure dense seal 30 and delivery valve seat 40, Ensure that the negative-pressure dense seal 30 of float 10 and delivery valve seat 40 contact well, so that lift-off seal effect, guarantees normally to take out with this Negative pressure.

In one embodiment of the utility model, as shown in figures 4 a and 4b, float 10 is located at the part in channel The aperture d5 in outside diameter d 1 and float hole 51 meets: d5+0.5mm≤d1≤d5+4mm.

In the present solution, design float 10 is located at the outside diameter d 1 of the part in channel and the aperture d5 satisfaction in float hole 51: D5+0.5mm≤d1≤d5+4mm namely float 10, which are located between the part and float hole 51 in channel, forms 0.5mm~4mm's Gap value can guarantee that float 10 can be moved up and down swimmingly along channel in cooking process in this way, and the design can ensure that float 10 Higher concentricity is kept with float hole 51, to ensure accurate contraposition between float 10, positive seal circle 20 and cover board 50, it is ensured that The positive seal circle 20 of float 10 contacts well with cover board 50, to promote positive seal effect, avoids steam in cooking process The problems such as leakage.

In one embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, float 10 are equipped with steam channel 11, wherein when float 10 is in the position between positive seal position and negative-pressure sealing position, steam The space of 50 lower section of cover board is connected to by channel 11 with the space of 40 top of delivery valve seat, as shown in Fig. 5, Fig. 7 and Fig. 9, float 10 When in positive seal position, float hole 51 is sealed by positive seal circle 20, and 40 top of steam channel 11 and delivery valve seat Space connection is not connected to the space of 50 lower section of cover board, and as shown in Fig. 4 a, Fig. 4 b, Fig. 6 and Fig. 8, float 10 is in negative-pressure sealing When position, mounting hole 41 is sealed by negative-pressure dense seal 30, and steam channel 11 is connected to the space of 50 lower section of cover board, with exhaust valve The space of 40 top of seat is not connected to.

In the present solution, designing steam channel 11, on float 10 to be in positive seal position and negative pressure when float 10 When position between sealing station, the space of 40 top of the space of 50 lower section of cover board and delivery valve seat is connected using steam channel 11 It is logical, it can prevent gap of a large amount of steam between float 10 and mounting hole 41 and float 10 and float hole 51 from passing through in this way, it can Float 10 clamping stagnation problem caused by avoid blocking, it is ensured that float 10 along channel-active smoothness, to guarantee that equipment is positive and negative Voltage-controlled system is sensitive, accurate, and the exhaust efficiency of the structure is also higher, it can be achieved that exhaust efficiency is promoted, particularly with to float 10 Fit clearance between mounting hole 41 and float 10 and float hole 51 has the occasion being strict with, and realizes to take into account to be promoted and float Son 10 and 41 pairs of neutrality of mounting hole, promotion float 10 and 51 pairs of float hole neutrality and the purpose for promoting exhaust efficiency.

When float 10 is in positive seal position, float hole 51 is sealed by positive seal circle 20, and steam channel 11 with The space connection of the top of delivery valve seat 40 is not connected to the space of 50 lower section of cover board, with ensure to block exhaust valve and cooking cavity it Between connection, prevent the steam in cooking cavity from leaking out.

When float 10 is in negative-pressure sealing position, mounting hole 41 is sealed by negative-pressure dense seal 30, and steam channel 11 with The space connection of the lower section of cover board 50 is not connected to the space of 40 top of delivery valve seat, with ensure to block exhaust valve and cooking cavity it Between connection, realize efficiently take out negative pressure.

More specifically, as shown in Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9,10 interior design of float is hollow Structure, steam channel 11 are constructed by the hollow structure, and the steam channel 11 further includes the first 12 Hes of opening on float 10 Second opening 13, when float 10 be in the position between positive seal position and negative-pressure sealing position, positive seal circle 20 and Negative-pressure dense seal 30 is all not in sealing state, and the first opening 12 and the second opening 13 are exposed outside channel, at this point, the first opening 12 are connected in the space of the top of delivery valve seat 40 with steam channel 11, and the second opening 13 is by the cooking cavity and steam below cover board 50 Channel 11 is connected to, and when float 10 is in positive seal position, float hole 51 is sealed by positive seal circle 20, the second opening 13 In the culinary art in float hole 51 to be connected to the cooking cavity below cover board 50, below realization steam channel 11 and cover board 50 Chamber is not connected to, and realizes that the cooking cavity by 50 lower section of the space of 40 top of delivery valve seat and cover board disconnects, when float 10 is in negative pressure When sealing station, mounting hole 41 is sealed by negative-pressure dense seal 30, and the first opening 12 is located in mounting hole 41 thus can not be with exhaust The space connection of 40 top of valve seat is realized that steam channel 11 and the space of 40 top of delivery valve seat are not connected to, is realized exhaust valve The cooking cavity of 50 lower section of space and cover board of 40 top of seat disconnects.

In one embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6 and Fig. 7, negative-pressure dense seal 30 Be connected on float 10, when float 10 is in negative-pressure sealing position, the periphery position of negative-pressure dense seal 30 and mounting hole 41 against It is formed and is tightly connected, when float 10 leaves negative-pressure sealing position, negative-pressure dense seal 30 is separated with the periphery position of mounting hole 41.

In the present solution, negative-pressure dense seal 30 is arranged on float 10, the drive negative-pressure dense seal 30 of float 10 is made and is arranged The 41 periphery position of mounting hole of air valve seat 40 or is allowed to separate with the 41 periphery position of mounting hole of delivery valve seat 40 against with sealing To realize connection, have structure simple, sealing be connected between the flexible accurate advantage of switching control.

In one embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, delivery valve seat 40 is equipped with abutment face 42, Negative-pressure dense seal 30 be used for abutment face 42 against position outside diameter d 3 and abutment face 42 outside diameter d 4 meet: d4 > d3.

In the present solution, setting negative-pressure dense seal 30 be used for abutment face 42 against position outside diameter d 3 and abutment face 42 Outside diameter d 4 meet: d4 > d3, it can be ensured that negative-pressure dense seal 30 and the 41 periphery location contacts of mounting hole of delivery valve seat 40 are good It is good, it is ensured that sealing effect is excellent, caused leakage problem when preventing negative-pressure dense 30 a small amount of deviation of seal.

In one embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, an aperture of mounting hole 41 be located at against On face 42, and the aperture d2 and d3 of mounting hole 41 meet: d3 > d2.

In the present solution, an aperture of mounting hole 41 is located on abutment face 42, and the aperture d2 and negative pressure of mounting hole 41 Sealing ring 30 be used for abutment face 42 against position outside diameter d 3 meet: d3 > d2, it can be ensured that negative-pressure dense seal 30 and row The 41 periphery location contacts of mounting hole of air valve seat 40 are good, and ensure that an aperture of mounting hole 41 is located at negative-pressure dense seal 30 and supports By the inside at position, it is ensured that sealing effect is excellent, caused leakage problem when preventing negative-pressure dense 30 a small amount of deviation of seal.

In one embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, Fig. 5, negative-pressure dense seal 30 includes socket part 31 and the skirt portion 32 that is connect with socket part 31, socket part 31 and float 10 be tightly connected, float 10 is in negative-pressure sealing position When, the periphery position of skirt portion 32 and mounting hole 41 against.

In the present solution, setting negative-pressure dense seal 30 includes socket part 31 and the skirt portion 32 connecting with socket part 31, set Socket part 31 and float 10 are tightly connected, and skirt portion 32 is used for the periphery position of mounting hole 41 against being sealed, such knot In structure, the styling power that skirt portion 32 is subject to is small, can more fully deform with lift-off seal effect, and the design also has knot Structure is simple, reliable advantage is fixed to negative-pressure dense seal 30, wherein it is highly preferred that socket part 31 and skirt portion 32 are integral type Structure.

In one embodiment of the utility model, as shown in figure 5, skirt portion 32 be configured to it is horn-like, in this way can be with Lifting negative pressure sealing ring 30 is to the sealing effect in channel, and horn-like skirt portion 32 has preferably rebound effect, conducive to mentioning The reliability of negative-pressure dense seal 30 is risen, and is conducive to extend the service life of negative-pressure dense seal 30.

In one embodiment of the utility model, as shown in Figure 6 and Figure 7, negative-pressure dense seal 30 is configured to gasket shape Shape, the ring structure is simple, convenient processing and manufacture, and 30 surface texture of negative-pressure dense seal of gasket shape is smooth, is not easy to It shelters evil people and countenance evil practices, product wholesomeness can be promoted.

In one embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6 and Fig. 7, negative-pressure dense seal 30 Nesting is mounted on float 10, wherein float 10 is equipped with stop bit protrusion 14, and it is convex that one end of negative-pressure dense seal 30 is resisted against stop bit It rises on 14 and/or float 10 is equipped with stop bit groove 15, negative-pressure dense seal 30 is embedding equipped with being nested with stop bit groove 15 Enter portion 33.

In the present solution, on float 10 design stop bit protrusion 14 with negative-pressure dense seal 30 against, utilize the stop bit protrusion 14 can play the role of good axial limiting to negative-pressure dense seal 30, prevent suction surface sealing ring from channeling bit caused poor sealing Problem, guarantees pumping efficiency, and using stop bit protrusion 14 and negative-pressure dense seal 30 against can extend negative-pressure dense seal 30 and floating The sealed pathway of sub 10 connecting portions avoids steam from leaking from the connecting portion of negative-pressure dense seal 30 and float 10, guarantees pumping Efficiency；Stop bit groove 15, the embedded division that setting is nested with stop bit groove 15 in negative-pressure dense seal 30 are set on float 10 33, the structure being mutually twisted using the two can play the role of good axial limiting to negative-pressure dense seal 30, prevent suction surface Poor sealing problem caused by sealing ring channels bit, guarantee pumping efficiency, and utilization stop bit groove 15 are embedding with negative-pressure dense seal 30 Enter the occlusion of portion 33, the sealed pathway of negative-pressure dense seal 30 Yu 10 connecting portion of float can be extended, avoid steam from negative-pressure sealing Circle 30 and the connecting portion of float 10 leak, and guarantee pumping efficiency.

In one embodiment of the utility model, negative-pressure dense seal 30 is connected on delivery valve seat 40, as shown in figure 8, When float 10 is in negative-pressure sealing position, negative-pressure dense seal 30 and float 10 are tightly connected against formation, and float 10 leaves negative pressure When sealing station (such as shown in Fig. 9, when float 10 is in positive seal position), negative-pressure dense seal 30 is separated with float 10.

In the present solution, negative-pressure dense seal 30 is connected on delivery valve seat 40, in this way, negative-pressure dense seal 30 is not with float 10 activities are formed with negative-pressure dense seal 30 when by 10 activity of float to negative-pressure sealing position and are tightly connected against to realize, should 10 floating resistance of float is small in structure, and activity is more flexible, control is more acurrate, and since 30 position of negative-pressure dense seal is solid in the structure Fixed, deviation risk of leakage is smaller, more conducively guarantee sealing effect.

In one embodiment of the utility model, as shown in Figure 8 and Figure 9, negative-pressure dense seal 30 is equipped with and mounting hole 41 corresponding apertures 34, float 10 are connected to aperture 34, wherein float 10 is equipped with flange 16, as shown in figure 8, float 10 When in negative-pressure sealing position, flange 16, which blocks mounting hole 41 and compresses negative-pressure dense seal 30, forms sealed connection.

In the present solution, aperture 34 is arranged in negative-pressure dense seal 30 so that float 10 is along the axial activity of aperture 34, Float 10 is equipped with flange 16, so that float 10 is blocked mounting hole 41 when being located at negative-pressure sealing position and compresses negative-pressure dense seal 30 It is formed and is tightly connected, the structure is simple, and reliable with the sealed connection of mounting hole 41, is conducive to guarantee pumping efficiency.

In one embodiment of the utility model, as shown in figure 8, being located at when float 10 is in negative-pressure sealing position The outer diameter D 3 at the position at aperture 34 and the aperture D1 of aperture 34 meet: D1 >=D3+1mm.

When in the present solution, design float 10 is in negative-pressure sealing position, it is located at the outer diameter D 3 at the position at aperture 34 Meet with the aperture D1 of aperture 34: when D1 >=D3+1mm namely float 10 are in negative-pressure sealing position, the shape between aperture 34 At at least gap value of 1mm, to guarantee that float 10 can be moved up and down swimmingly in cooking process.

In one embodiment of the utility model, as shown in figure 8, the aperture d5 of the aperture D1 of aperture 34 and float hole 51 Meet: D1 < d5.

In the present solution, the aperture d5 that the aperture D1 of design aperture 34 is less than float hole 51 meets: D1 < d5, it can be true with this Protect 30 sealed reliable of negative-pressure dense seal, it is ensured that pumping high efficiency.

In one embodiment of the utility model, as shown in Figure 8 and Figure 9, delivery valve seat 40 is equipped with convex edge 43, negative pressure 30 outer of sealing ring is equipped with flange 35, and flange 35 is hooked on convex edge 43.

In the present solution, being equipped with convex edge 43 on design delivery valve seat 40,30 outer of negative-pressure dense seal is equipped with flange 35, flange 35 are hooked on convex edge 43 to realize negative-pressure dense seal 30 and 40 reliable location of delivery valve seat and limit, prevent negative-pressure dense seal 30 inclined Poor sealing problem caused by position, it is ensured that negative-pressure dense seal 30 to the mounting hole 41 of delivery valve seat 40 and 10 sealed reliable of float, Ensure to be evacuated high efficiency.

In some embodiments of the utility model, as shown in Fig. 4 a to Fig. 9, positive seal circle 20 is mounted on float 10 On, certainly, this programme is not limited thereto, and those skilled in the art can also design positive seal circle 20 according to demand and be mounted on lid On plate 50.

In some embodiments of the utility model, as shown in Fig. 4 a to Fig. 9, specifically, positive seal circle 20 is mounted on On float 10, wherein when float 10 is in positive seal position, the periphery position in positive seal circle 20 and float hole 51 against into Row sealing, when float 10 leaves positive seal position, positive seal circle 20 is separated with the periphery position in float hole 51.

In the present solution, designing the periphery position in positive seal circle 20 and float hole 51 against to realize float 10 and float 51 position of hole is tightly connected, and be may be implemented to prevent steam slot leakage between float 10 and float hole 51 in this way, be realized simultaneously The connected relation between the cooking cavity of 50 lower section of steam channel 11 and cover board is blocked, the outside gas leakage of cooking cavity is avoided, is conducive to culinary art Intracavitary voltage-controlled system is accurate.

In one embodiment of the utility model, as shown in Figure 4 b, the hole wall in float hole 51 and the periphery in float hole 51 52 transition of cambered surface is formed between position, wherein float hole 51 is located at aperture d6 and positive seal circle at 52 outer position of cambered surface 20 with the internal diameter d7 of 51 periphery position contact position of float hole for meeting: d6+0.5mm≤d7≤d6+20mm.

In the present solution, in the aperture d6 and positive seal circle 20 that design float hole 51 is located at 52 outer position of cambered surface Diameter d7 meets: d6+0.5mm≤d7≤d6+20mm, so that float 10 has certain deviation allowance, float 10 can be prevented few Amount deviation causes positive seal circle 20 at float hole 51 the problem of poor sealing, it is ensured that seals to the cooking cavity of 50 lower section of cover board Reliability.

In some specific embodiments of the utility model, as shown in Figure 1 to Figure 3, the upper cover of cooking equipment includes outer cover 70, cover board 50 and inner cover 60, cover board 50 are removably fixed on inner cover 60, and the upper cover of cooking equipment further includes extract system and floats Sub 10 components, specifically, extract system include air extractor 90, tracheae 91, valve 92 and with bleeding point 93, extract system is for real Subnormal ambient in existing pot；10 component of float includes float 10, negative-pressure dense seal 30, positive seal circle 20 and closeouts 17, float 10 components are moveably secured in the mounting hole 41 of delivery valve seat 40, and delivery valve seat 40 is fixed on cover board 50, to float 10 Component has guiding role.When negative pressure, delivery valve seat 40 is contacted with 10 negative-pressure dense seal 30 of float, realizes negative-pressure sealing.

More specifically, the float 10 of positive/negative-pressure culinary art pressure cooker need to have the function of normal pressures pot float 10, simultaneously also The requirement that negative-pressure sealing need to be met, when the culinary art of pressure cooker positive pressure, the compression of float 10 is boosted, the positive seal of 10 bottom of float Circle 20 holds out against cover board 50, seals the float hole 51 of cover board 50, realizes positive seal；When pressure cooker negative pressure culinary art when, float 10 by Suction is pulled down into, and the negative-pressure dense seal 30 on 10 top of float and delivery valve seat 40 or 50 hole of cover board compress, and realizes negative-pressure sealing.

In addition to the above technical characteristic,

In a specific embodiment of the utility model, as shown in Fig. 4 a, Fig. 4 b, Fig. 5, Fig. 6, Fig. 7, float 10 is born Pressure seal ring 30 is fixed on float 10, and the negative-pressure dense seal 30 of float 10 is fixed on float 10, and 10 outer diameter of float is d1, row The internal diameter of the mounting hole 41 of air valve seat 40 is d2, and the outer diameter of the negative-pressure dense seal 30 of float 10 is d3, the installation of delivery valve seat 40 The outer diameter in hole 41 is d4, and the internal diameter in the float hole 51 of cover board 50 is d5, and outer diameter is d6 at the fillet in the float hole 51 of cover board 50, is floated The positive seal circle 20 of son 10 is used to 50 contact position internal diameter of cover board be d7.It wherein, can be suitable for float 10 in guarantee cooking process It freely moves up and down, and guarantees that float 10 can keep higher concentricity with the mounting hole 41 of delivery valve seat 40, so that float 10 Negative-pressure dense seal 30 contacted with delivery valve seat 40 well, guarantee it is normal take out negative pressure, design d2+0.5mm≤d1≤d2+4mm, d5 +0.5mm≤d1≤d5+4mm.In addition, designing d2 to guarantee that the negative-pressure dense seal 30 of float 10 contacts well with delivery valve seat 40 < d3 < d4, and to guarantee that the positive seal circle 20 of float 10 contacts well with cover board 50, design d6+0.5mm≤d7≤d6+ 20mm。

In a specific embodiment of the utility model, as shown in Figure 8 and Figure 9, the negative-pressure dense seal 30 of float 10 is solid Due on delivery valve seat 40.The negative-pressure dense seal 30 of float 10 is installed in the card slot of delivery valve seat 40.The negative-pressure dense of float 10 30 lower part of seal is contacted with delivery valve seat 40 and cover board 50, when negative-pressure sealing, 10 negative-pressure dense seal of float, 30 top and float 10 Contact.To guarantee that float 10 swimmingly moves up and down in cooking process, the internal diameter D1 at 10 negative-pressure dense seal of float, 30 aperture 34 The 51 internal diameter D2 of float hole of cover board 50 need to be less than, for the reliability for guaranteeing sealing, design D1 >=D3+1, wherein D3 is float 10 Upper end outer diameter.

As shown in Figure 1 to Figure 3, the cooking equipment that the embodiment of the utility model second aspect provides, comprising: any of the above-described The upper cover of cooking equipment described in technical solution；Pot body 80, the upper cover can be covered to close with the pot body 80 and be cooked with enclosing to set out It prepares food chamber；Air extractor 90, for extracting the gas in the cooking cavity out.

More specifically, pot body 80 includes the interior pot 82 in cooker body 81 and cooker body 81, when upper cover and the lid of cooker body 81 close, upper cover Cover board 50 and interior pot 82, which enclose, sets out cooking cavity.

The utility model cooking equipment provided by the above embodiment, by being provided with described in any of the above-described technical solution The upper cover of cooking equipment, to have all of the above beneficial effect, details are not described herein.

Optionally, the cooking equipment is micro-pressure electric rice cooker or electric pressure cooking saucepan.

In conclusion cooking equipment provided by the utility model and its upper cover, are equipped with positive seal circle, to be in when float Sealing is realized using positive seal circle when positive seal position, steam in cooking cavity is avoided to leak out, and is met under normal conditions Positive seal function, in addition, be additionally provided with negative-pressure dense seal, to utilize negative-pressure dense seal when float is in negative-pressure sealing position It realizes sealing, external steam is avoided to enter cooking cavity, it is ensured that the operation to pumping efficiency in pot, and when promoting the negative pressure stage in pot Efficiency, and the design achieves floats to be able to carry out sealing in positive and negative pressure sealing station, is allowed to have under positive pressure, negative pressure Two way seal function solves the problems, such as that conventional float only has positive seal ability, is difficult to take into account negative-pressure sealing performance.

In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term The terms such as " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, It can be and be detachably connected, or be integrally connected；" connected " can be directly connected, and can also pass through the indirect phase of intermediary Even.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be Concrete meaning.

In the description of the utility model, it is to be understood that the orientation or positional relationship of the instructions such as term " on ", "lower" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or unit must have specific direction, be constructed and operated in a specific orientation, it is thus impossible to understand For limitations of the present invention.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples In can be combined in any suitable manner.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (18)

1. a kind of upper cover of cooking equipment characterized by comprising

Channel；

Float is located in the channel, and can have positive seal position and negative-pressure sealing along the channel-active, the float Position；

Positive seal circle, the float are sealed when being in the positive seal position by the positive seal circle and the channel Connection, is connected to the space of the channel two sides mutually not；

Negative-pressure dense seal, the float are sealed when being in the negative-pressure sealing position by the negative-pressure dense seal and the channel Connection, is connected to the space of the channel two sides mutually not.

2. the upper cover of cooking equipment according to claim 1, which is characterized in that further include:

Delivery valve seat is equipped with mounting hole；

Cover board, is equipped with float hole, and the float hole and the mounting hole are correspondingly arranged to limit the channel jointly.

3. the upper cover of cooking equipment according to claim 2, which is characterized in that

The float is located at the outside diameter d 1 of the part in the channel and the aperture d2 of the mounting hole meets: d2+0.5mm≤d1 ≤d2+4mm；And/or

The float is located at the outside diameter d 1 of the part in the channel and the aperture d5 in the float hole meets: d5+0.5mm≤d1 ≤d5+4mm。

4. the upper cover of cooking equipment according to claim 2 or 3, which is characterized in that

The float is equipped with steam channel,

When the float is in the position between the positive seal position and the negative-pressure sealing position, the steam channel will Space below the cover board is connected to the space above the delivery valve seat,

When the float is in the positive seal position, the float hole is sealed by the positive seal circle, and the steam Channel is connected to the space above the delivery valve seat, is not connected to the space below the cover board,

When the float is in the negative-pressure sealing position, the mounting hole is sealed by the negative-pressure dense seal, and the steam Channel is connected to the space below the cover board, is not connected to the space above the delivery valve seat.

5. the upper cover of cooking equipment according to claim 2 or 3, which is characterized in that

The negative-pressure dense seal is connected on the float, when the float is in the negative-pressure sealing position, the negative-pressure dense The periphery position of seal and the mounting hole is tightly connected against formation, when the float leaves the negative-pressure sealing position, institute Negative-pressure dense seal is stated to separate with the periphery position of the mounting hole.

6. the upper cover of cooking equipment according to claim 5, which is characterized in that

The delivery valve seat be equipped with abutment face, the negative-pressure dense seal be used for the abutment face against position outside diameter d 3 Meet with the outside diameter d 4 of the abutment face: d4 > d3.

7. the upper cover of cooking equipment according to claim 5, which is characterized in that

The negative-pressure dense seal includes socket part and the skirt portion connecting with the socket part, and the socket part and the float are close Envelope connection, when the float be in the negative-pressure sealing position, the periphery position of the skirt portion and the mounting hole against.

8. the upper cover of cooking equipment according to claim 7, which is characterized in that

The skirt portion is configured to horn-like.

9. the upper cover of cooking equipment according to claim 5, which is characterized in that

The negative-pressure dense seal nesting is mounted on the float, wherein the float is equipped with stop bit protrusion, the negative-pressure dense One end of seal is resisted against in the stop bit protrusion and/or the float is equipped with stop bit groove, sets in the negative-pressure dense seal There is the embedded division being nested with the stop bit groove.

10. the upper cover of cooking equipment according to claim 2 or 3, which is characterized in that

The negative-pressure dense seal is connected on the delivery valve seat, described negative when the float is in the negative-pressure sealing position Pressure seal ring and the float are tightly connected against formation, when the float leaves the negative-pressure sealing position, the negative-pressure dense Seal is separated with the float.

11. the upper cover of cooking equipment according to claim 10, which is characterized in that

The negative-pressure dense seal is equipped with aperture corresponding with the mounting hole, and the float is connected to the aperture, wherein institute Float is stated equipped with flange, when the float is in the negative-pressure sealing position, the flange blocks the mounting hole simultaneously It compresses the negative-pressure dense seal and forms sealed connection.

12. the upper cover of cooking equipment according to claim 11, which is characterized in that

When the float is in the negative-pressure sealing position, it is located at the outer diameter D 3 and the aperture at the position of the tapping Aperture D1 meets: D1 >=D3+1mm.

13. the upper cover of cooking equipment according to claim 11, which is characterized in that

The aperture D1 of the aperture and the aperture d5 in the float hole meet: D1 < d5.

14. the upper cover of cooking equipment according to claim 10, which is characterized in that

The delivery valve seat is equipped with convex edge, and negative-pressure dense seal outer is equipped with flange, and the flange is hooked on the convex edge.

15. the upper cover of cooking equipment according to claim 2 or 3, which is characterized in that

The positive seal circle is mounted on the float or the positive seal circle is mounted on the cover board.

16. the upper cover of cooking equipment according to claim 15, which is characterized in that

In the case of the positive seal circle is mounted on the float, when the float is in the positive seal position, Against being sealed, the float leaves the positive seal position at the periphery position in the positive seal circle and the float hole When, the positive seal circle is separated with the periphery position in the float hole.

17. the upper cover of cooking equipment according to claim 16, which is characterized in that

Cambered surface transition is formed between the hole wall in the float hole and the periphery position in the float hole, wherein the float hole location Aperture d6 and the positive seal circle at the position of the cambered surface outer are used for and float hole periphery position contact position Internal diameter d7 meets: d6+0.5mm≤d7≤d6+20mm.

18. a kind of cooking equipment characterized by comprising

The upper cover of cooking equipment as described in any one of claims 1 to 17；

Pot body, the upper cover can close with the pot body lid and set out cooking cavity to enclose；

Air extractor, for extracting the gas in the cooking cavity out.