CN217285452U - Cooking utensil - Google Patents

Abstract

The utility model discloses a cooking utensil, which comprises a cooker body, a cover body and an electric gas exchange device; the electric gas exchange device comprises an electric drive unit, a transmission device, an airflow generation device and an air inlet and outlet valve device; the air inlet and outlet valve device comprises a first valve body, a second valve body and a one-way valve film; the first valve body is provided with an air inlet channel and an air outlet channel communicated with the flexible cavity, the second valve body is provided with a valve air inlet communicated with the outside atmosphere and a valve air outlet communicated with the cooking space, and the peripheral edge of the one-way valve film is arranged between the first valve body and the second valve body and comprises an air inlet diaphragm capable of communicating or blocking the air inlet channel and the valve air inlet and an air outlet diaphragm capable of communicating or blocking the air outlet channel and the valve air outlet; first valve body is provided with first fender muscle, and first fender muscle setting is in inlet channel and support and lean on to the diameter line of the diaphragm that admits air, and the second valve body is provided with the second and keeps off the muscle, and the second keeps off the muscle setting in the valve gas outlet and support and lean on to the diameter line of the diaphragm of giving vent to anger.

Description

Cooking utensil

Technical Field

The utility model relates to a kitchen utensil technical field particularly relates to a cooking utensil.

Background

Known cooking appliances (e.g., rice cookers) increase the cooking speed by reducing the temperature and pressure in the pot during cooking, such as rapid cooking usually achieved by blowing air into the pot with an air pump, however, the pressure and flow range of the known air pump are difficult to satisfy the cooking requirements of the existing cooking appliances. To achieve faster cooking speed, a larger air pump is often required to achieve, resulting in higher space, noise, and cost of the cooking appliance.

To this end, the present invention provides a cooking appliance to at least partially solve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

In order to solve the above problem at least partially, the utility model discloses a cooking utensil, it includes:

a pot body;

the cover body is arranged on the cooker body in an openable and closable manner, and a cooking space is formed between the cover body and the cooker body when the cover body covers the cooker body; and

an electrically powered gas exchange device disposed in the lid or the pot body and comprising:

an electric drive unit;

a transmission device connected with the electric drive unit to be driven by the electric drive unit to reciprocate;

an air flow generating device connected with the transmission device, wherein the air flow generating device is provided with a flexible cavity which is configured to be capable of being switched between a squeezed state and a reset state under the reciprocating action of the transmission device; and

and the air inlet and outlet valve device is connected with the air flow generating device and comprises:

the first valve body is provided with an air inlet channel and an air outlet channel which are communicated with the flexible cavity;

the second valve body is provided with a valve air inlet and a valve air outlet which correspond to the air inlet channel and the air outlet channel respectively, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space; and

a check valve film, a peripheral edge of the check valve film being disposed between the first valve body and the second valve body, the check valve film including an air inlet diaphragm and an air outlet diaphragm, the air inlet diaphragm being capable of elastically deforming in accordance with an air flow direction to communicate or block the air inlet passage and the valve air inlet, the air outlet diaphragm being capable of elastically deforming in accordance with the air flow direction to communicate or block the air outlet passage and the valve air outlet,

wherein the first valve body is provided with a first blocking rib which is arranged in the air inlet channel and abuts against a diameter line of the air inlet membrane,

the second valve body is provided with a second blocking rib, and the second blocking rib is arranged in the valve air outlet and is abutted to the diameter line of the air outlet diaphragm.

According to the utility model discloses a cooking utensil, in the culinary art process, when the food in the cooking space is in the boiling stage, electronic gas exchange device can inhale gas through the valve air inlet to carry gas to the cooking space in through the valve gas outlet. The temperature difference between the delivered gas and the foam in the cooking space exists, so that the delivered gas can liquefy and shrink the steam in the foam to break after entering the cooking space and contacting the foam accumulated in the cooking space, and the overflow of the pot is prevented. The overflow can be avoided even under the condition of fast cooking with large fire. Moreover, the airflow generating device can realize the pressure and speed change of the airflow through the compression and the stretching of a flexible cavity with a certain volume, and can realize the automatic control of the airflow by combining an electric driving unit, an air inlet and outlet valve device and the like, thereby providing a gas exchange function for the cooking space. The scheme has the advantages of large air flow, low working noise and low cost. Further, through setting up first fender muscle and second fender muscle, first fender muscle can support and lean on to the diameter line of the diaphragm that admits air, the second keeps off the muscle and can support and lean on to the diameter line of the diaphragm of giving vent to anger, can restrict the middle zone of the diaphragm that admits air and the diaphragm of giving vent to anger and take place deformation, the deformation of the middle zone of the diaphragm that has avoided admitting air and the diaphragm of giving vent to anger is greater than marginal deformation, with the reduction because of the diaphragm that admits air and the deformation of the diaphragm of giving vent to anger the possibility that the air current swirl appears, thereby reduce the holistic pneumatic noise of electronic gas exchange device.

Optionally, the relationship between the width W1 of the first rib and the outer diameter D1 of the intake diaphragm satisfies: 0.15. ltoreq. W1/D1. ltoreq.0.25, and/or

The relationship between the width W2 of the second rib and the outer diameter D2 of the vent membrane satisfies: W2/D2 of more than or equal to 0.15 and less than or equal to 0.25.

According to the present aspect, when the width W1 of the first rib and the outer diameter D1 of the inlet diaphragm satisfy the above relationship, and when the width W2 of the second rib and the outer diameter D2 of the outlet diaphragm satisfy the above relationship, the effect of reducing the aerodynamic noise of the electric gas exchange device is made better.

Optionally, a surface of a side of the intake diaphragm facing the valve inlet port is configured as an arc-shaped face protruding toward the valve inlet port, and a thickness T1 of a peripheral edge of the intake diaphragm satisfies: t1 is more than or equal to 0.2mm and less than or equal to 0.4mm, and/or

The surface of the side of the outlet membrane facing the outlet channel is configured as an arc-shaped surface protruding toward the outlet channel, and the thickness T2 of the peripheral edge of the outlet membrane satisfies: t1 is more than or equal to 0.2mm and less than or equal to 0.4 mm.

According to the scheme, the surface of one side, facing the valve air inlet, of the air inlet diaphragm is constructed into an arc-shaped surface protruding towards the valve air inlet, so that air flow can flow to the edge of the air inlet diaphragm, the edge of the air inlet diaphragm is deformed to flow according to a designed channel, and the wind resistance is small; when the thickness T1 of the peripheral edge of the intake diaphragm satisfies the above range, the intake diaphragm has a sufficient deformation life and a good deformation effect; the surface of one side of the air outlet membrane facing the air outlet channel is constructed into an arc surface protruding towards the air outlet channel, so that air flow can flow to the edge of the air outlet membrane, the edge of the air outlet membrane is deformed, the air flow can flow according to the designed channel, and the wind resistance is small; when thickness T2 of the outer peripheral edge of the vent membrane satisfies the above range, the vent membrane has a sufficient deformation life and a good deformation effect.

Optionally, the one-way valve film further comprises a film body, the film body is provided with an air inlet through hole for communicating the valve air inlet with the air inlet channel and an air outlet through hole for communicating the valve air outlet with the air outlet channel, the air inlet film sheet is arranged at the air inlet through hole, the air outlet film sheet is arranged at the air outlet through hole, and a gap exists between the peripheral edges of the air inlet film sheet and the air outlet film sheet and the film body.

According to the scheme, the one-way valve film is simple in structure, convenient to manufacture and capable of reducing production cost.

Optionally, the first valve body is provided with a first supporting part, the first supporting part is arranged around the air outlet channel and is used for abutting against the air outlet membrane along the circumferential direction of the air outlet channel,

the second valve body is provided with a second support portion that is provided around the valve inlet port and is configured to abut against the intake diaphragm in a circumferential direction of the valve inlet port.

According to this scheme, through setting up first supporting part and second supporting part to the gaseous one-way flow is realized with the diaphragm cooperation of giving vent to anger in first supporting part, and the gaseous one-way flow is realized with the diaphragm cooperation of admitting air in the second supporting part of being convenient for.

Optionally, a relationship between the outer diameter D1 of the intake diaphragm and the inner diameter D3 of the second support portion satisfies: 0.7. ltoreq.D 3/D1. ltoreq.0.85, and/or

The relation between the outer diameter D2 of the air outlet diaphragm and the inner diameter D4 of the first supporting part satisfies: D4/D2 is more than or equal to 0.7 and less than or equal to 0.85.

According to the scheme, when the outer diameter D1 of the air inlet diaphragm and the inner diameter D3 of the second supporting part satisfy the relation, the air inlet of the air inlet diaphragm can be opened and closed well, and when the outer diameter D2 of the air outlet diaphragm and the inner diameter D4 of the first supporting part satisfy the relation, the air outlet diaphragm can be opened and closed well.

Optionally, the check valve membrane further comprises a first connection portion connecting a peripheral edge of the inlet membrane sheet with the membrane body, and/or

The one-way valve film further comprises a second connecting part, and the second connecting part connects the peripheral edge of the air outlet film sheet with the film body.

According to the scheme, the first connecting part is arranged, so that a gap is formed between the peripheral edge of the air inlet membrane and the membrane body while the peripheral edge of the air inlet membrane is connected with the membrane body; by providing the second connecting portion, the peripheral edge of the vent membrane sheet can be connected with the membrane body while a gap is at least partially formed between the peripheral edge and the membrane body.

Optionally, the airflow generating means comprises a side wall for forming the flexible chamber, the side wall comprising at least one corrugated structure of wave crest configuration.

According to the scheme, the airflow generating device is simple in structure, convenient to manufacture and capable of reducing production cost, and the side wall comprises the corrugated structure with at least one wave crest structure, so that reciprocating motion of the flexible cavity is achieved.

Optionally, the cover body is provided with a cover inlet port in communication with the outside atmosphere, the inlet duct communicating the cover inlet port with the valve inlet port,

the cover body is further provided with a steam channel for communicating the cooking space with the external atmosphere, the steam channel is provided with a steam outlet communicated with the external atmosphere, and the steam outlet surrounds the periphery side of the air inlet arranged on the cover body.

According to the scheme, the steam outlet is arranged around the cover air inlet, so that steam discharged from the steam outlet can form a circumferentially continuous or closed steam curtain around and above the cover air inlet to filter gas sucked into the cover air inlet, so that sundries such as oil smoke and dust are prevented from being sucked into the cover air inlet, oil stains or dirt or even blockage in a gas pipeline is avoided, and the influence on the taste of food is also avoided.

Optionally, the transmission means comprises an eccentric wheel and an eccentric shaft connected to the eccentric wheel, the eccentric wheel being connected to the electric drive unit, the electric drive unit being capable of driving the eccentric wheel and the eccentric shaft in rotation, the eccentric shaft being connected to the air flow generating means to drive the flexible chamber to switch between the squeezed state and the restored state.

According to the scheme, the transmission device is simple in structure, convenient to assemble and easy to realize.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.

In the drawings:

fig. 1 is a schematic sectional view of a partial structure of a cooking appliance according to a preferred embodiment of the present invention;

FIG. 2 is a partial schematic structural view of the lid of the cooking appliance of FIG. 1 showing the inner liner and the electrically powered gas exchange device;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-A of FIG. 2;

FIG. 5 is a perspective view of the electrical gas exchange device of FIG. 2;

FIG. 6 is an exploded schematic view of the electrical gas exchange device of FIG. 5;

FIG. 7 is a schematic cross-sectional view of a portion of the cover of FIG. 2 showing the electrokinetic gas exchange device, the inlet and outlet conduits;

FIG. 8 is a schematic cross-sectional view of the inlet and outlet gas valve assembly of the electrical gas exchange device of FIG. 7;

FIG. 9 is another schematic cross-sectional view of the inlet and outlet gas valve assembly of the electrical gas exchange device of FIG. 7;

FIG. 10 is a schematic perspective view of a one-way valve membrane of the inlet and outlet gas valve assembly of the electrical gas exchange device of FIG. 7;

FIG. 11 is a schematic side view of the check valve membrane of FIG. 10;

fig. 12 is a schematic sectional view taken along line C-C in fig. 11.

Description of the reference numerals:

100: the cooking appliance 110: pot body

111: an inner pot 112: heating device

120: cover 121: upper cover

122: inner liner 123: detachable cover

124: the steam valve assembly 125: cover air inlet

126: the steam passage 127: steam outlet

128: cover air outlet 130: electric gas exchange device

131: electric drive unit 132: transmission device

133: airflow generation device 134: air inlet and outlet valve device

135: flexible cavity 136: eccentric wheel

137: eccentric bushing 138: closed end

139: air guide end 141: first valve body

142: second valve body 144: one-way valve film

145: valve inlet 146: valve outlet

147: intake passage 148: air outlet channel

149: eccentric shaft 150: air inlet pipeline

160: an air outlet pipeline 181: shock-absorbing sleeve

182: side wall 183: noise reduction upper shell

184: the noise reduction lower shell 185: air inlet through port

186: outlet passage port 187: membrane body

188: an intake diaphragm 189: air outlet diaphragm

190: the cooking space 191: food storage space

192: cavity space 193: first stop rib

194: the second retaining rib 195: a first supporting part

196: second supporting part

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. It should be noted that ordinal numbers such as "first" and "second" are used in the present application for identification only, and do not have any other meanings, such as a specific order. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component". The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only and are not limiting.

The utility model provides a cooking utensil. The cooking appliance according to the utility model can be an electric cooker, an electric pressure cooker or other electric heating appliances. In addition, the cooking appliance may have other functions such as cooking porridge and cooking soup in addition to the function of cooking rice.

Fig. 1 shows a schematic view of a cooking appliance 100 according to an embodiment of the present invention. In which, for the sake of simplicity, only a partial structure of the cooking appliance 100 is schematically shown in fig. 1.

As shown in fig. 1, the cooking appliance 100 includes a pot body 110. The pot body 110 may have a generally rounded rectangular parallelepiped shape, a generally cylindrical shape, or any other suitable shape. The pot body 110 is provided therein with an inner pot 111 having a substantially cylindrical shape or any other suitable shape. The inner pot 111 can be freely put into or taken out of the inner pot receiving part of the pot body 110 to facilitate cleaning of the inner pot 111. The inner pot 111 is used to store food to be cooked, such as rice, soup, etc. The top of the inner pan 111 has a top opening. The user can store food to be cooked in the inner pot 111 through the top opening, or take out cooked food from the inner pot 111 through the top opening.

The pot body 110 is further provided therein with a heating means 112 for heating the inner pot 111. The heating device 112 may heat the inner pan 111 at the bottom and/or the side of the inner pan 111. The heating device 112 may be an electric heating tube or an induction heating device such as a solenoid coil.

As shown in fig. 1, a lid 120 is provided above the pot body 110. The shape of the cover 120 substantially corresponds to the shape of the pot body 110. For example, the cover 120 may have a rounded rectangular parallelepiped shape. The lid 120 is provided to the pot body 110 in an openable and closable manner, and is used to cover the entire top of the pot body 110 or at least the inner pot 111 of the pot body 110. Specifically, in the present embodiment, the cover 120 may be pivotably disposed above the pot body 110 between the maximum open position and the closed position by, for example, hinging. The hinged position of the lid 120 and the pot body 110 is generally located at the rear end of the cooking appliance 100, so that the user can operate at the front end of the cooking appliance 100. It should be noted that the terms "front" and "rear" are used herein with reference to the position where the user uses the cooking appliance. Specifically, a direction in which the cooking appliance faces the user is defined as "front", and a direction opposite thereto is defined as "rear".

As shown in fig. 1, when the cover 120 is closed over the pot body 110, a cooking space 190 is formed between the cover 120 and the pot body 110 (specifically, the inner pot 111 of the pot body 110). The cooking space 190 includes a food storage space 191 and a cavity space 192. Specifically, the food storage space 191 refers to a space where food is actually stored. The cavity space 192 is located above the food storage space 191. That is, when the cover 120 is covered on the pot body 110, the cavity space 192 is a space between the upper surface of the food and the cover 120. There is no strict boundary between the food storage space 191 and the cavity space 192, and the volume of the two spaces may change according to the specific change of the volume of the food material.

It should be noted that directional terms and positional terms used herein in describing the respective components and their positional relationships in the cover body 120, such as "above", "below", "upper side", "lower side", "upward", "downward", "above", "below", "high", "low", "horizontal distance", etc., are relative to the cover body 120 when in the covering position.

As shown in fig. 2, 4 to 7, the cooking appliance 100 further includes an electric gas exchange device 130, an air inlet pipe 150 and an air outlet pipe 160. The electric gas exchange device 130 serves to transfer gas outside the cooking appliance 100 (e.g., outside cold air) to the cooking space 190 (more specifically, the cavity space 192). The electric gas exchange device 130 may be disposed at any suitable location of the cooking appliance 100. Preferably, the electrically powered gas exchange device 130 is disposed on the cover 120. It is further preferred that the electrically powered gas exchange device 130 be generally horizontally recumbent within the cover 120 to reduce the size of the cover 120 in the vertical direction.

As shown in fig. 5 to 7, the electric gas exchange device 130 mainly includes an electric driving unit 131, a transmission device 132, a gas flow generating device 133 and a gas inlet and outlet valve device 134.

The electric drive unit 131 may be configured as a motor. The transmission 132 is connected to the electric drive unit 131, and the electric drive unit 131 can drive the transmission 132 to reciprocate. The airflow generating device 133 is connected with the transmission device 132, and the airflow generating device 133 is provided with a flexible cavity 135, and the shape of the flexible cavity 135 is changed under the reciprocating action of the transmission device 132. Specifically, the flexible chamber 135 can be switched between a squeezed state and a restored state, and when the flexible chamber 135 is switched between the two states, the volume of the flexible chamber 135 can be changed, so that a pressure change can be generated in the flexible chamber 135.

The air inlet and outlet valve device 134 is connected to the air flow generating device 133, and the air inlet and outlet valve device 134 includes a first valve body 141, a second valve body 142, and a check valve film 144. The first valve body 141 and the second valve body 142 are oppositely disposed, and the first valve body 141 is disposed closer to the flexible chamber 135 than the second valve body 142 and is disposed facing the flexible chamber 135. The check valve film 144 is made of a flexible material, and an outer peripheral edge of the check valve film 144 is disposed between the first valve body 141 and the second valve body 142.

The first valve body 141 is provided with an inlet passage 147 and an outlet passage 148 communicating with the flexible chamber 135. The second valve body 142 is provided with a valve inlet port 145 and a valve outlet port 146 corresponding to an inlet passage 147 and an outlet passage 148, respectively. One end of the air intake conduit 150 is connected to the valve air inlet 145 to communicate the valve air inlet 145 with the ambient atmosphere so that the ambient atmosphere may enter the flexible chamber 135 via the valve air inlet 145. One end of gas outlet line 160 is connected to valve gas outlet 146 to communicate valve gas outlet 146 with the cooking volume so that gas in flexible chamber 135 can enter the cooking volume via valve gas outlet 146.

As shown in fig. 10 and 11, the check valve film 144 includes an inlet diaphragm 188 and an outlet diaphragm 189. The intake diaphragm 188 can be elastically deformed in accordance with the direction of the airflow to communicate or block the intake passage 147 with the valve intake port 145. Air outlet diaphragm 189 can elastically deform along with the direction of air flow to communicate or block air outlet channel 148 and valve air outlet 146.

As shown in fig. 8 and 9, the first valve body 141 is provided with a first stopper rib 193, and the first stopper rib 193 is provided in the intake passage 147 and abuts on a diametrical line of the intake diaphragm 188. Second valve body 142 is provided with second blocking rib 194, and second blocking rib 194 is provided in valve outlet 146 and abuts on the diameter line of outlet diaphragm 189. Therefore, the deformation of the middle area of the inlet diaphragm 188 and the outlet diaphragm 189 can be limited, and the deformation of the middle area of the inlet diaphragm 188 and the outlet diaphragm 189 is avoided to be larger than that of the edge, so that the possibility of airflow vortex caused by the deformation of the inlet diaphragm 188 and the outlet diaphragm 189 is reduced, and the overall aerodynamic noise of the electric gas exchange device 130 is reduced.

Specifically, the first barrier rib 193 and the second barrier rib 194 may be configured in a straight wall shape. Preferably, the first rib 193 is perpendicular to the intake diaphragm 188, and the width W1 of the first rib 193 is smaller than the outer diameter D1 of the intake diaphragm 188. The second rib 194 is perpendicular to the vent film piece 189, and the width W2 of the second rib 194 is smaller than the outer diameter D2 of the vent film piece 189.

In order to make the pneumatic noise reduction effect of the electric gas exchange device 130 good, as shown in fig. 8 and 9, it is preferable that the relationship between the width W1 of the first rib 193 and the outer diameter D1 of the intake diaphragm 188 satisfies: 0.15 is not less than W1/D1 is not less than 0.25, and the relationship between the width W2 of the second rib 194 and the outer diameter D2 of the air outlet diaphragm 189 satisfies: W2/D2 of more than or equal to 0.15 and less than or equal to 0.25. For example, W1/D1 and W2/D2 may be 0.17, 0.19, 0.21, or 0.23. Those skilled in the art will understand that the relationship between the width W1 of the first rib 193 and the outer diameter D1 of the inlet diaphragm 188 and the relationship between the width W2 of the second rib 194 and the outer diameter D2 of the outlet diaphragm 189 are not limited to this embodiment, and W1/D1 and W2/D2 may be less than 0.15 or greater than 0.25, as required. For example, W1/D1 and W2/D2 may be 0.13, 0.14, 0.26, or 0.27.

As shown in fig. 8, the surface of the side of the intake diaphragm 188 facing the valve intake opening 145 is configured as an arc-shaped surface that is convex toward the valve intake opening 145, and the arc-shaped surface is preferably a portion of a spherical surface. Therefore, the thickness of the edge of the air inlet membrane 188 can be smaller than that of the middle area of the air inlet membrane, airflow flows to the edge of the air inlet membrane 188, the edge of the air inlet membrane 188 deforms, the airflow can flow according to the designed channel, and wind resistance is small. Preferably, the thickness T1 of the outer peripheral edge of the intake diaphragm 188 satisfies: t1 is more than or equal to 0.2mm and less than or equal to 0.4mm, so that the air inlet diaphragm 188 has enough deformation life and better deformation effect.

As shown in fig. 9, the surface of the side of outlet film 189 facing outlet passage 148 is configured as an arc-shaped surface that is convex toward outlet passage 148, and the arc-shaped surface is preferably a part of a spherical surface. From this, can make the thickness of the edge of the diaphragm 189 of giving vent to anger be less than the thickness of its middle zone, and then make the air current flow direction to the edge of the diaphragm 189 of giving vent to anger for the edge of the diaphragm 189 of giving vent to anger takes place deformation, and flow with the passageway that can follow the design, and make the windage less. Preferably, thickness T2 of outer peripheral edge of outlet film 189 satisfies: t1 is more than or equal to 0.2mm and less than or equal to 0.4mm, so that the vent diaphragm 189 has sufficient deformation life and good deformation effect.

As shown in fig. 6, 8 to 12, the check valve film 144 further includes a film body 187, and the film body 187 is integrally formed with the inlet diaphragm 188 and the outlet diaphragm 189. The membrane body 187 is provided with an inlet gas passage port 185 communicating the valve inlet 145 with the inlet gas passage 147 and an outlet gas passage port 186 communicating the valve outlet 146 with the outlet gas passage 148. The inlet and outlet passage openings 185 and 186 may be configured as circular through-holes. Inlet diaphragm 188 is provided to inlet passage 185, outlet diaphragm 189 is provided to outlet passage 186, and there is a gap between the outer peripheral edges of inlet diaphragm 188 and outlet diaphragm 189 and membrane body 187.

As shown in fig. 9, first valve body 141 is provided with first support part 195, and first support part 195 is provided around gas outlet passage 148 and serves to abut against gas outlet diaphragm 189 in the circumferential direction of gas outlet passage 148. When the air flow enters from valve air outlet 146, air outlet diaphragm 189 can be abutted to first supporting portion 195 along the circumferential direction of air outlet channel 148 to prevent the air flow from flowing into air outlet channel 148.

As shown in fig. 8, the second valve body 142 is provided with a second support portion 196, and the second support portion 196 is provided around the valve intake port 145 and is for abutting against the intake diaphragm 188 in the circumferential direction of the valve intake port 145. When the air flow enters from the intake passage 147, the intake diaphragm 188 can be abutted to the second support portion 196 in the circumferential direction of the valve intake opening 145 to prevent the air flow from flowing to the valve intake opening 145.

In order for the check valve film 144 to be able to open and close the valve inlet 145 and the valve outlet 146 well, the relationship between the outer diameter D1 of the inlet diaphragm 188 and the inner diameter D3 of the second support portion 196 satisfies: 0.7 < D3/D1 < 0.85, and the relationship between the outer diameter D2 of the air outlet diaphragm 189 and the inner diameter D4 of the first support part 195 satisfies: D4/D2 is more than or equal to 0.7 and less than or equal to 0.85. For example, D3/D1 and D4/D2 may be 0.75 or 0.8. Those skilled in the art will understand that the relationship between the outer diameter D1 of the inlet diaphragm 188 and the inner diameter D3 of the second support part 196 and the relationship between the outer diameter D2 of the outlet diaphragm 189 and the inner diameter D4 of the first support part 195 are not limited to this embodiment, and D3/D1 and D4/D2 may be less than 0.7 or greater than 0.85, as required. For example, W1/D1 and W2/D2 may be 0.6, 0.65, 0.9, or 0.95.

As shown in fig. 10 and 11, the check valve film 144 further includes two first connection portions 197, which are respectively provided at both ends of the intake diaphragm 188 to connect the peripheral edge of the intake diaphragm 188 with the film body 187 and to at least partially space the peripheral edge of the intake diaphragm 188 from the film body 187. Preferably, the first barrier rib 193 and the two first connection portions 197 are arranged on a diameter line of the intake diaphragm 188, and the first barrier rib 193 may be disposed between the two first connection portions 197.

The check valve film 144 further includes two second connecting portions 198, the two second connecting portions 198 being respectively provided at both ends of the outlet membrane sheet 189 to connect the outer peripheral edge of the outlet membrane sheet 189 with the membrane body 187 and to at least partially space the outer peripheral edge of the outlet membrane sheet 189 from the membrane body 187. Preferably, the second blocking rib 194 and the two second connecting portions 198 are arranged on a diameter line of the air outlet diaphragm 189, and both ends of the second blocking rib 194 may be disposed between the two second connecting portions 198.

As shown in fig. 1 and 3, the cover body 120 is provided with a cover air inlet 125 communicating with the outside and a cover air outlet 128 communicating with the cooking space. Specifically, the intake conduit 150 can communicate the lid intake port 125 with the valve intake port 145. An outlet line 160 can communicate the valve outlet port 146 with the cap outlet port 128. The inlet and outlet conduits 150 and 160 may be flexible hoses made of a material such as silicone or rubber. More specifically, the cover body 120 mainly includes an upper cover 121, an inner liner 122 disposed below the upper cover 121, and a detachable cover 123 disposed below the inner liner 122. A removable lid 123 is removably attached to the liner 122, and a lid outlet port 128 is provided in the removable lid 123. An electrically powered gas exchange device 130 may be disposed between the lid 121 and the liner 122 and connected to the liner 122.

As shown in fig. 6 and 7, the driving unit 132 includes an eccentric wheel 136, an eccentric shaft 149 connected to the eccentric wheel 136, and an eccentric bushing 137 connecting the eccentric shaft 149 to the air flow generating unit 133. Eccentric 136 is connected to electric drive unit 131, and electric drive unit 131 can drive eccentric 136 and eccentric shaft 149 to rotate. Eccentric shaft 149 rotates eccentric sleeve 137, and eccentric sleeve 137 is connected to airflow generating device 133 to drive flexible chamber 135 between the squeezed state and the restored state. Specifically, the airflow generating device 133 includes a closed end 138 and an air guide end 139 respectively located at two ends of the flexible cavity 135, the eccentric sleeve 137 is connected to the closed end 138, and the air inlet and outlet valve device 134 (specifically, the first valve body 141) is connected to the air guide end 139.

The airflow generating device 133 comprises a side wall 182 for forming a flexible chamber, the side wall 182 comprising a corrugated structure of at least one wave crest configuration. When eccentric sleeve 137 rotates with eccentric shaft 149, the corrugated structure may be brought to compress and stretch reciprocally. Preferably, the corrugated structure comprises a plurality of peak configurations, wherein the number n of peak configurations satisfies: n is more than or equal to 2 and less than or equal to 8. Illustratively, the corrugated structure may include 3, 4 or 6 wave peak configurations, which can be set by one skilled in the art according to actual needs. This solution makes the flexible chamber 135 more easily compressible and stretchable, less prone to breakage, and reliable in fatigue life by configuring the side wall 182 of the flexible chamber 135 as a corrugated structure.

During cooking, when the temperature of the food cooked in the inner pot 111 is critically boiled or just before boiling for a while, or when the temperature in the inner pot 111 reaches a set value, viscous substances such as starch in the food are precipitated into water, and steam is wrapped to form a large amount of foam, which is accumulated in the cavity space 192 above the food storage space 191 in a large amount. The electric driving unit 131 can be controlled to drive the transmission device 132 to reciprocate, so as to compress and stretch the flexible cavity 135, and the flexible cavity 135 can be switched between a squeezed state and a recovered state. When flexible chamber 135 is compressed, the chamber volume decreases and the chamber interior air pressure is greater than the chamber exterior pressure, forcing air out through valve outlet port 146 and outlet passage 148. When the flexible chamber 135 is stretched, the volume of the chamber increases, the air pressure inside the chamber is low, and air with a large external pressure enters the interior of the flexible chamber 135 through the valve inlet 145 and the inlet passage 147. The compression and extension of the flexible chamber 135 is accomplished in a cycle equivalent to a continuous cycle of such cycle, with a continuous flow of gas output from the valve outlet 146 into the chamber volume 192. Generally, the temperature difference between the delivered gas and the foam in the cavity space 192 exists, so that the delivered gas can liquefy and shrink the steam in the foam to be broken after entering the cavity space 192 to contact the foam accumulated in the cavity space 192, thereby preventing the overflow. The overflow can be avoided even under the condition of fast cooking with large fire. As shown in fig. 1, the cover 120 is further provided with a steam valve assembly 124, and the steam valve assembly 124 includes a steam passage 126 communicating the cooking space with the external atmosphere. The steam passage 126 has a steam outlet 127 communicating with the outside atmosphere, and the cover air inlet 125 may be provided on the steam valve assembly 124 with the steam outlet 127 disposed around the outer peripheral side of the cover air inlet 125, i.e., the steam outlet 127 is disposed around the cover air inlet 125. During operation of the cooking appliance 100, when food in the food storage space 191 is in a boiling stage, a large amount of steam is generated in the cavity space 192, and the steam is discharged through the steam passage 126. At the same time, as described above, the electric gas exchange device 130 also operates to suck gas from the lid gas inlet 125 and to deliver the sucked gas into the cavity space 192 through the lid gas outlet 128. Since the steam outlet 127 is disposed around the cover inlet 125, the steam discharged through the steam outlet 127 forms a circumferentially continuous or closed steam curtain around and above the cover inlet 125 to filter the air sucked into the cover inlet 125, thereby preventing impurities such as oil smoke and dust from being sucked into the cover inlet 125, preventing oil stains or dirt from remaining in the air pipeline and even blocking the air pipeline, and preventing the taste of food from being affected.

Specifically, in one embodiment of the present invention, the steam outlet 127 is disposed around the lid air inlet 125. The steam outlet 127 includes a plurality of (e.g., two, three, or more) sub-steam outlets arranged at intervals in a circumferential direction thereof. The plurality of sub-steam outlets may or may not be equally spaced. The sub-vapor outlets may be in any suitable shape, such as arc, circle, rectangle, etc. The plurality of sub-steam outlets may be identical in shape or different in shape.

In a further embodiment of the invention, which is not shown, the steam outlet 127 is configured as a circumferentially closed ring which surrounds the cover air inlet 125. It should be noted that the term "annular" as used herein refers to any suitable shape that is closed or end-to-end in the circumferential direction and is hollow, and the outer contour may be any suitable shape such as circular, rectangular, pentagonal, hexagonal, etc.

As shown in fig. 5 and 6. The electric gas exchange device 130 further includes a noise reduction upper shell 183, a noise reduction lower shell 184, and two shock-absorbing sleeves 181, the noise reduction upper shell 183 is disposed above the noise reduction lower shell 184, and is connected to the noise reduction lower shell 184. The electric drive unit 131, the transmission device 132, the airflow generation device 133 and the air inlet and outlet valve device 134 are arranged between the noise reduction upper shell 183 and the noise reduction lower shell 184, and the damping sleeve 181 is sleeved on the outer sides of the noise reduction upper shell 183 and the noise reduction lower shell 184 and is arranged at two ends of the noise reduction upper shell 183 and the noise reduction lower shell 184. The shock absorbing sleeve 181 may be made of a flexible material such as silicone, rubber, etc., and the electrical gas exchange device 130 may be connected to the inner liner 122 via the shock absorbing sleeve 181.

Unless defined otherwise, 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is not applicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.

Claims (10)

1. A cooking appliance, comprising:

a pot body;

the cover body is arranged on the cooker body in an openable and closable manner, and a cooking space is formed between the cover body and the cooker body when the cover body covers the cooker body; and

an electrically powered gas exchange device disposed in the lid or the pot body and comprising:

an electric drive unit;

a transmission device connected with the electric drive unit to be driven by the electric drive unit to reciprocate;

an air flow generating device connected with the transmission device, wherein the air flow generating device is provided with a flexible cavity which is configured to be capable of being switched between a squeezed state and a reset state under the reciprocating action of the transmission device; and

and the air inlet and outlet valve device is connected with the air flow generating device and comprises:

the first valve body is provided with an air inlet channel and an air outlet channel which are communicated with the flexible cavity;

the second valve body is provided with a valve air inlet and a valve air outlet which correspond to the air inlet channel and the air outlet channel respectively, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space; and

a check valve film, a peripheral edge of the check valve film being disposed between the first valve body and the second valve body, the check valve film including an air inlet diaphragm and an air outlet diaphragm, the air inlet diaphragm being capable of elastically deforming in accordance with an air flow direction to communicate or block the air inlet passage and the valve air inlet, the air outlet diaphragm being capable of elastically deforming in accordance with the air flow direction to communicate or block the air outlet passage and the valve air outlet,

wherein the first valve body is provided with a first blocking rib which is arranged in the air inlet channel and abuts against a diameter line of the air inlet membrane,

the second valve body is provided with a second blocking rib, and the second blocking rib is arranged in the valve air outlet and is abutted to the diameter line of the air outlet diaphragm.

2. The cooking appliance of claim 1,

the relationship between the width W1 of the first rib and the outer diameter D1 of the intake diaphragm satisfies: 0.15. ltoreq. W1/D1. ltoreq.0.25, and/or

The relationship between the width W2 of the second rib and the outer diameter D2 of the vent membrane satisfies: W2/D2 of more than or equal to 0.15 and less than or equal to 0.25.

3. The cooking appliance of claim 1,

the surface of the side of the intake diaphragm facing the valve inlet is configured as an arc-shaped surface protruding toward the valve inlet, and the thickness T1 of the peripheral edge of the intake diaphragm satisfies: 0.2mm < T1 < 0.4mm, and/or

The surface of the side of the outlet membrane facing the outlet channel is configured as an arc-shaped surface protruding toward the outlet channel, and the thickness T2 of the peripheral edge of the outlet membrane satisfies: t1 is more than or equal to 0.2mm and less than or equal to 0.4 mm.

4. The cooking appliance of claim 1, wherein said one-way valve membrane further comprises a membrane body provided with an inlet passage port communicating said valve inlet port with said inlet passage and an outlet passage port communicating said valve outlet port with said outlet passage, said inlet membrane sheet is provided at said inlet passage port, said outlet membrane sheet is provided at said outlet passage port, and a gap exists between peripheral edges of said inlet and outlet membrane sheets and said membrane body.

5. The cooking appliance of claim 4,

the first valve body is provided with a first supporting part which is arranged around the air outlet channel and is used for abutting against the air outlet membrane along the circumferential direction of the air outlet channel,

the second valve body is provided with a second support portion that is provided around the valve intake port and that is configured to abut against the intake diaphragm in a circumferential direction of the valve intake port.

6. The cooking appliance of claim 5,

the relationship between the outer diameter D1 of the intake diaphragm and the inner diameter D3 of the second support portion satisfies: 0.7. ltoreq.D 3/D1. ltoreq.0.85, and/or

The relation between the outer diameter D2 of the air outlet diaphragm and the inner diameter D4 of the first supporting part satisfies: D4/D2 is more than or equal to 0.7 and less than or equal to 0.85.

7. The cooking appliance of claim 4,

the check valve film further includes a first connecting portion connecting a peripheral edge of the intake diaphragm sheet with the film body, and/or

The one-way valve film further comprises a second connecting part, and the second connecting part connects the peripheral edge of the air outlet film sheet with the film body.

8. The cooking appliance of claim 1, wherein said airflow generating means comprises a sidewall for forming said flexible chamber, said sidewall comprising at least one corrugated structure of wave crest configuration.

9. The cooking appliance according to any one of claims 1 to 8,

the cover body is provided with a cover air inlet communicated with the outside atmosphere, the cover air inlet is communicated with the valve air inlet,

the cover body is further provided with a steam passage for communicating the cooking space with the external atmosphere, the steam passage has a steam outlet communicated with the external atmosphere, and the steam outlet surrounds the peripheral side of the air inlet arranged on the cover.

10. The cooking appliance according to any one of claims 1 to 8, wherein said transmission means comprises an eccentric wheel connected to said electric drive unit and an eccentric shaft connected to said eccentric wheel, said electric drive unit being capable of driving said eccentric wheel and said eccentric shaft in rotation, said eccentric shaft being connected to said air flow generating means to drive said flexible chamber to switch between said squeezed state and said restored state.

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