CN217243731U - Cooking utensil - Google Patents

Abstract

The utility model discloses a cooking utensil, which comprises a cooker body, a cover body, an electric gas exchange device, an air inlet pipeline and an air outlet pipeline; 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; 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 transmission device is connected with the electric drive unit and driven by the electric drive unit to reciprocate; the air flow generating device is connected with the transmission device and 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 action of the reciprocating motion of the transmission device; the air inlet and outlet valve device is connected with the airflow generating device and is provided with a valve air inlet and a valve air outlet which are respectively communicated with the flexible cavity; the air inlet pipeline connects the valve air inlet with the outside atmosphere; the air outlet pipeline communicates the air outlet of the valve with the cooking space; and a rectifying piece is arranged on the inner side of at least one of the air inlet pipeline and the air outlet pipeline.

Description

Cooking utensil

Technical Field

The utility model relates to a kitchen utensil 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

A series of concepts in a simplified form are introduced in the summary section, 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;

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

the air inlet and outlet valve device is connected with the airflow generating device and is provided with a valve air inlet and a valve air outlet which are respectively communicated with the flexible cavity;

an air intake conduit communicating the valve air inlet with ambient atmosphere; and

an air outlet pipeline, wherein the air outlet pipeline communicates the valve air outlet with the cooking space;

wherein a fairing is arranged on the inner side of at least one of the air inlet pipeline and the air outlet pipeline.

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 quick 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 proposal has large air flow, low working noise and low cost. Further, by arranging the rectifying piece on the inner side of at least one of the air inlet pipeline and the air outlet pipeline, the vibration noise of the pulse airflow caused by the reciprocating motion of the flexible cavity to the air inlet pipeline and/or the air outlet pipeline can be reduced, and the problem of blockage of the air inlet pipeline and/or the air outlet pipeline caused by abnormal bending can be reduced.

Optionally, the fairing includes an inlet fairing and an outlet fairing, the inlet fairing is disposed inside the inlet conduit and extends along a length of the inlet conduit, and the outlet fairing is disposed inside the outlet conduit and extends along a length of the outlet conduit.

According to this scheme, through the inboard setting at the inlet line rectifier piece that admits air to set up the rectifier piece of giving vent to anger in the inboard of giving vent to anger the pipeline, can reduce the pulse air current that leads to because the reciprocating motion in flexible chamber to the vibration noise of inlet line and outlet line, and can reduce the jam problem that inlet line and outlet line lead to because of unusual buckling.

Optionally, the length L1 of the air inlet pipeline and the length L2 of the air inlet rectifying piece satisfy: 0.2. ltoreq.L 2/L1. ltoreq.0.7, and/or

The length L3 of the gas outlet pipeline and the length L4 of the gas outlet rectifying piece satisfy that: L4/L3 is more than or equal to 0.2 and less than or equal to 0.7.

According to the present aspect, when the length L1 of the intake pipe and the length L2 of the intake fairing satisfy the above-described relationship, and/or the length L3 of the exhaust pipe and the length L4 of the exhaust fairing satisfy the above-described relationship, a superior noise reduction effect can be achieved.

Optionally, the length L1 of the air inlet pipeline and the length L2 of the air inlet rectifying piece satisfy: 0.5. ltoreq.L 2/L1. ltoreq.0.6, and/or

The length L3 of the gas outlet pipeline and the length L4 of the gas outlet rectifying piece satisfy that: L4/L3 is more than or equal to 0.5 and less than or equal to 0.6.

According to the scheme, when the length L1 of the air inlet pipeline and the length L2 of the air inlet rectifying piece meet the relation, and/or the length L3 of the air outlet pipeline and the length L4 of the air outlet rectifying piece meet the relation, a better noise reduction effect can be further realized.

Optionally, the inner diameter Φ 1 of the intake pipe and the outer diameter Φ 2 of the intake fairing satisfy: phi 2/phi 1 is more than or equal to 0.4 and less than or equal to 0.6, and/or

The inner diameter phi 3 of the air outlet pipeline and the outer diameter phi 4 of the air outlet rectifying part meet the following conditions: phi 4/phi 3 is more than or equal to 0.4 and less than or equal to 0.6.

According to the scheme, when the inner diameter phi 1 of the air inlet pipeline and the outer diameter phi 2 of the air inlet rectifying part meet the relation, and or the inner diameter phi 3 of the air outlet pipeline and the outer diameter phi 4 of the air outlet rectifying part meet the relation, the pulse air flow with large amplitude can be segmented to the maximum extent.

Optionally, the inlet fairing and the outlet fairing are both springs,

wherein an outer diameter φ 2 of the intake fairing, an inner diameter φ 5 of the intake fairing, and a pitch C1 of the intake fairing satisfy: 0.2mm < C1- (phi 2-phi 5)/2 < 0.8mm, and/or

The outer diameter phi 4 of the air outlet rectifying piece, the inner diameter phi 6 of the air outlet rectifying piece and the pitch C2 of the air outlet rectifying piece satisfy the following conditions: c2- (phi 4-phi 6)/2 is not more than 0.8mm and not more than 0.2 mm.

According to this scheme, the spring can be with the cross-section of air inlet pipeline and play gas pipeline along radially cutting apart to make air inlet pipeline and the inside airflow channel who goes out the gas pipeline form a plurality of passageways that have the resonance along the axial, with the internal space who cuts apart air inlet pipeline and play gas pipeline thinner, thereby reduce air inlet pipeline and go out the vibration range of pulse airflow in the gas pipeline, increase pulse airflow's vibration frequency, make the air current in air inlet pipeline and the gas pipeline of giving vent to anger steady continuity more.

Optionally, the outer diameter Φ 2 of the intake fairing and the inner diameter Φ 5 of the intake fairing satisfy: (phi 2-phi 5)/2 is less than or equal to 0.2, and/or

The outer diameter phi 4 of the air outlet rectifying part and the inner diameter phi 6 of the air outlet rectifying part meet the following conditions: (phi 4-phi 6)/2 is less than or equal to 0.2.

According to the scheme, the frequency of the air flow vibration in the air inlet pipeline can be increased, and/or the frequency of the air flow vibration in the air outlet pipeline can be increased.

Optionally, the airflow generating means comprises a side wall for forming the flexible chamber, the side wall comprising a corrugated structure of at least one peak 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 connected to the electric drive unit, and an eccentric shaft connected to the eccentric wheel, 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.

Optionally, the air flow generating device includes a closed end and an air guide end respectively located at two ends of the flexible cavity, the eccentric shaft is connected to the closed end, and the air inlet and outlet valve device is connected to the air guide end.

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

Optionally, the air inlet and outlet valve device comprises a first valve body, a second valve body, an air inlet membrane and an air outlet membrane, the first valve body is provided with an air inlet channel and an air outlet channel which are communicated with the flexible cavity respectively, the valve air inlet and the valve air outlet are arranged on the second valve body respectively, the air inlet membrane and the air outlet membrane correspond to the air inlet channel and the air outlet channel connected to the first valve body respectively, the air inlet membrane can realize elastic deformation along with the air flow direction so as to communicate or separate the air inlet channel and the valve air inlet, and the air outlet membrane can realize elastic deformation along with the air flow direction so as to communicate or separate the air outlet channel and the valve air outlet.

According to the scheme, the air valve inlet and outlet device is simple in structure, convenient to assemble and easy to realize.

Optionally, the air inlet and outlet valve device further comprises a sealing membrane, wherein the peripheral edge of the sealing membrane is arranged between the first valve body and the second valve body, and the sealing membrane is provided with an air inlet passing port for communicating the valve air inlet with the air inlet channel and an air outlet passing port for communicating the valve air outlet with the air outlet channel.

According to the scheme, the sealing diaphragm is simple in structure, and the sealing diaphragm can seal the gap between the first valve body and the second valve body.

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 perspective view of the electric 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 conduit, and the outlet conduit;

fig. 8 is another cross-sectional view of a partial structure of the cover in fig. 2, showing an intake pipe and an intake fairing.

Description of 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: sealing diaphragm

145: valve inlet 146: valve outlet

147: intake passage 148: air outlet channel

149: eccentric shaft 150: air inlet pipeline

151: the intake diaphragm 152: air outlet diaphragm

156: intake mount column 157: air outlet mounting column

158: air intake mounting hole 159: air outlet mounting hole

160: the gas outlet pipeline 170: rectifying piece

171: intake air rectifying member 172: air outlet rectifying piece

181: the damping sleeve 182: side wall

183: noise reduction upper shell 184: noise reduction lower shell

185: intake air passage port 186: air outlet passage

190: the cooking space 191: food storage space

192: space of cavity

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 present 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 the embodiments of the present 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" used in the present application are merely labels, and do not have any other meanings, such as a specific order or the like. 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 fig. 1, only a partial structure of the cooking appliance 100 is schematically illustrated for simplicity.

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 cooked food out of 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 cover 120 is provided to the pot body 110 in an openable and closable manner, for covering 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 lid body 120 may be pivotably provided above the pot body 110 between the maximum open position and the closed position by, for example, a hinge. 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 distinction 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 food material volume.

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 comprises an electric gas exchange device 130, an air inlet pipeline 150 and an air outlet pipeline 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 has a valve inlet 145 and a valve outlet 146 respectively communicating with the flexible chamber 135. Air intake conduit 150 communicates valve inlet 145 with the ambient atmosphere so that ambient atmosphere may enter flexible chamber 135 via valve inlet 145. Gas outlet conduit 160 communicates valve gas outlet 146 with the cooking volume to enable gas in flexible chamber 135 to enter the cooking volume via valve gas outlet 146. The structure of the air inlet and outlet valve device 134 will be described in detail later.

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. An air intake conduit 150 can communicate the cover air inlet 125 with the valve air inlet 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. 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.

In the present embodiment, as shown in fig. 7, a fairing 170 is provided inside at least one of the inlet duct 150 and the outlet duct 160. Thereby, the vibration noise of the pulse airflow to the inlet duct 150 and/or the outlet duct 160 due to the reciprocating motion of the flexible chamber 135 can be reduced, and the problem of clogging of the inlet duct 150 and/or the outlet duct 160 due to abnormal bending can be reduced.

Specifically, as shown in fig. 7 and 8, the fairing 170 includes an inlet fairing 171 and an outlet fairing 172, the inlet fairing 171 being disposed inside the inlet conduit 150 and extending along the length of the inlet conduit 150, and the outlet fairing 172 being disposed inside the outlet conduit 160 and extending along the length of the outlet conduit 160.

Preferably, the inlet fairing 171 and the outlet fairing 172 are each configured as a spring, which may be, for example, an extension spring or a compression spring. The spring can divide the cross section of the inlet pipe 150 and the outlet pipe 160 along the radial direction, and make the internal airflow channels of the inlet pipe 150 and the outlet pipe 160 form a plurality of channels with resonance along the axial direction, so as to divide the internal space of the inlet pipe 150 and the outlet pipe 160 more finely, thereby reducing the vibration amplitude of the pulse airflow in the inlet pipe 150 and the outlet pipe 160, increasing the vibration frequency of the pulse airflow, and making the airflow in the inlet pipe 150 and the outlet pipe 160 more smooth and continuous to reduce the vibration noise of the inlet pipe 150 and the outlet pipe 160. Since the inner and outer surfaces of the inlet and outlet fairings 171 and 172 present a periodic concave-convex arc surface having a larger periodic frequency and a smaller periodic wavelength, when a pulse airflow having a larger wavelength and a smaller frequency passes through the surface, the vibration wavelength of the airflow is narrowed by the surface collision of the smaller wavelength, and the frequency of the vibration thereof is increased, whereby the flow of the pulse airflow becomes smoother and more continuous, whereby the vibration noise of the inlet and outlet ducts 150 and 160 can be reduced. Further, since the spring itself has a characteristic of bending recovery, the problem of clogging of the intake duct 150 and the exhaust duct 160 due to abnormal bending can be reduced. It is to be understood that the inlet fairing 171 and the outlet fairing 172 can also be any other suitable structure having a fairing function, as desired.

In order to achieve a good noise reduction effect, it is preferable that the length L1 of the intake duct 150 and the length L2 of the intake fairing 171 satisfy: 0.2 is less than or equal to L2/L1 is less than or equal to 0.7, and the length L3 of the gas outlet pipeline 160 and the length L4 of the gas outlet rectifying piece 172 meet the following conditions: L4/L3 is more than or equal to 0.2 and less than or equal to 0.7. For example, L2/L1 and L4/L3 may each be 0.3, 0.4, 0.5, or 0.6. Further preferably, the length L1 of the intake pipe 150 and the length L2 of the intake fairing 171 satisfy: L2/L1 is more than or equal to 0.5 and less than or equal to 0.6, and the length L3 of the gas outlet pipeline 160 and the length L4 of the gas outlet rectifying piece 172 meet the following conditions: L4/L3 is more than or equal to 0.5 and less than or equal to 0.6.

Since the inlet and outlet fairings 171 and 172 divide the inner spaces of the inlet and outlet ducts 150 and 160, respectively, when the outer diameters of the inlet and outlet fairings 171 and 172 are too large or large, it is impossible to maximally divide the pulse airflow of large amplitude. Therefore, in order to maximally divide the large amplitude of the pulse airflow, it is preferable that the inner diameter Φ 1 of the intake pipe 150 and the outer diameter Φ 2 of the intake rectifying member 171 satisfy: phi 2/phi 1 is more than or equal to 0.4 and less than or equal to 0.6, and the inner diameter phi 3 of the gas outlet pipeline 160 and the outer diameter phi 4 of the gas outlet rectifying part 172 meet the following conditions: phi 4/phi 3 is more than or equal to 0.4 and less than or equal to 0.6. For example, φ 2/φ 1 and φ 4/φ 3 may each be 0.45, 0.5, or 0.55.

In order to make the intake fairing 171 divide the interior space of the intake conduit 150 more finely to reduce the wavelength of the pulsating gas flow in the intake conduit 150 and to make the outlet fairing 172 divide the interior space of the outlet conduit 160 more finely to reduce the wavelength of the pulsating gas flow in the outlet conduit 160, it is preferable that the outer diameter Φ 2 of the intake fairing 171, the inner diameter Φ 5 of the intake fairing 171, and the pitch C1 of the intake fairing 171 satisfy: 0.2mm or less C1- (phi 2-phi 5)/2 or less 0.8mm, and the outer diameter phi 4 of the outlet fairing 172, the inner diameter phi 6 of the outlet fairing 172, and the pitch C2 of the outlet fairing 172 satisfy: c2- (phi 4-phi 6)/2 is not more than 0.8mm and not more than 0.2 mm.

Since the smaller the outer diameters of the inlet and outlet fairings 171 and 172, the higher the frequency of the airflow vibration, and the more continuous the rectified airflow, it is preferable that the outer diameter Φ 2 of the inlet fairing 171 and the inner diameter Φ 5 of the inlet fairing 171 satisfy: (phi 2-phi 5)/2 is less than or equal to 0.2, and the outer diameter phi 4 of the outlet fairing 172 and the inner diameter phi 6 of the outlet fairing 172 satisfy: (phi 4-phi 6)/2 is less than or equal to 0.2.

As shown in fig. 6 and 7, the transmission device 132 comprises an eccentric wheel 136, an eccentric sleeve 137 and an eccentric shaft 149 connecting the eccentric wheel 136 with the eccentric sleeve 137, the eccentric wheel 136 is connected with the electric driving unit 131, the electric driving unit 131 can drive the eccentric wheel 136 and the eccentric shaft 149 to rotate, and the eccentric shaft 149 is connected with the air flow generating device 133 through the eccentric sleeve 137 to drive the flexible cavity 135 to switch between the squeezed state and the restored state. Specifically, the air flow generating device 133 comprises a closed end 138 and an air guide end 139 respectively positioned at two ends of the flexible cavity 135, the eccentric shaft 149 is connected to the closed end 138 via an eccentric shaft sleeve 137, and the air inlet and outlet valve device 134 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. As eccentric shaft 149 rotates, the corrugated structure may be driven to reciprocally compress and stretch. 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 peak configurations, which may 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.

The air inlet and outlet valve device 134 can realize one-way passage of air. Specifically, as shown in fig. 6 and 7, the air inlet/outlet valve device 134 mainly includes a first valve body 141, a second valve body 142, an air inlet diaphragm 151, and an air outlet diaphragm 152. 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. The inlet diaphragm 151 and the outlet diaphragm 152 are disposed on the first valve body 141, and are disposed at both sides of the first valve body 141, respectively. Specifically, the inlet diaphragm 151 is disposed facing the airflow generating device 133, i.e., facing the flexible chamber 135, and the outlet diaphragm 152 is disposed facing the second valve body 142. The inlet diaphragm 151 and the outlet diaphragm 152 are made of a flexible material.

The first valve body 141 is provided with at least one inlet passage 147 and at least one outlet passage 148, which communicate with the flexible chamber 135, respectively. Three inlet channels 147 and three outlet channels 148 are exemplarily shown in fig. 6. Inlet passage 147 and outlet passage 148 are configured as channels that are circular in cross-section. A valve inlet 145 and a valve outlet 146 are provided on the first valve body 141 corresponding to the at least one inlet passage 147 and the at least one outlet passage 148, respectively. An end of an inlet line 150 is connected to the valve inlet 145 and an end of an outlet line 160 is connected to the valve outlet 146.

The intake diaphragm 151 is connected to the first valve body 141 corresponding to the at least one intake passage 147, and the intake diaphragm 151 can elastically deform in accordance with the airflow direction to communicate or block the plurality of intake passages 147 and the valve intake port 145. The air outlet membrane 152 is connected to the first valve body 141 corresponding to the at least one air outlet channel 148, and the air outlet membrane 152 can elastically deform along with the air flow direction to communicate or block the plurality of air outlet channels 148 and the valve air outlet 146.

As shown in fig. 6 and 7, the first valve body 141 is provided with an intake mounting post 156 and an exhaust mounting post 157. The intake mounting post 156 faces the flexible cavity 135 and extends through the center of the intake diaphragm 151 to detachably couple the intake diaphragm 151 to the first valve body 141. Outlet mounting post 157 faces second valve body 142 and extends through the center of outlet diaphragm 152 to detachably couple outlet diaphragm 152 to first valve body 141.

Specifically, the intake diaphragm 151 is provided with an intake mounting hole 158, and the intake mounting post 156 extends through the intake mounting hole 158 and is clamped to the intake diaphragm 151 to detachably connect the intake diaphragm 151 to the first valve body 141. Outlet diaphragm 152 is provided with an outlet mounting hole 159, and an outlet mounting post 157 extends through outlet mounting hole 159 and is held to outlet diaphragm 152 to detachably connect outlet diaphragm 152 to first valve body 141.

The air inlet and outlet valve device 134 further includes a sealing diaphragm 144, and an outer peripheral edge of the sealing diaphragm 144 is disposed between the first valve body 141 and the second valve body 142. The sealing diaphragm 144 is made of a flexible material such as silicon rubber or rubber to be able to seal a gap between the first valve body 141 and the second valve body 142. Sealing diaphragm 144 is provided with an inlet gas passage port 185 that communicates valve inlet port 145 with inlet gas passage 147 and an outlet gas passage port 186 that communicates valve outlet port 146 with outlet gas passage 148. Both the inlet and outlet air passing ports 185 and 186 may be configured as circular through holes. It will be understood by those skilled in the art that the shapes of the inlet and outlet through holes 185 and 186 are not limited to the present embodiment, and the inlet and outlet through holes 185 and 186 may be configured as through holes having an elliptical shape, a polygonal shape, or any other suitable shape, as required.

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 the squeezed state and the 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 electrical gas exchange device 130 also operates to draw in gas from the lid gas inlet 125 and deliver the drawn-in gas through the lid gas outlet 128 into the cavity space 192. 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 a vibration damping sleeve 181, the noise reduction upper shell 183 being disposed above the noise reduction lower shell 184 and being connected to the noise reduction lower shell 184. The electric drive unit 131, the transmission device 132, the airflow generating 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. The damping sleeve 181 may be made of a flexible material such as silicone rubber or rubber.

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 otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to 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 (13)

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;

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

the air inlet and outlet valve device is connected with the airflow generating device and is provided with a valve air inlet and a valve air outlet which are respectively communicated with the flexible cavity;

an air intake conduit communicating the valve air inlet with ambient atmosphere; and

an air outlet pipeline, wherein the air outlet pipeline communicates the valve air outlet with the cooking space;

wherein a fairing is arranged on the inner side of at least one of the air inlet pipeline and the air outlet pipeline.

2. The cooking appliance of claim 1 wherein said fairing includes an inlet fairing and an outlet fairing, said inlet fairing being disposed inboard of and extending along the length of said inlet conduit and said outlet fairing being disposed inboard of and extending along the length of said outlet conduit.

3. The cooking appliance of claim 2,

the length L1 of the air inlet pipeline and the length L2 of the air inlet rectifying piece satisfy the following conditions: 0.2 is less than or equal to L2/L1 is less than or equal to 0.7, and/or

The length L3 of the gas outlet pipeline and the length L4 of the gas outlet rectifying piece satisfy that: L4/L3 is more than or equal to 0.2 and less than or equal to 0.7.

4. The cooking appliance of claim 2,

the length L1 of the air inlet pipeline and the length L2 of the air inlet rectifying piece satisfy the following conditions: 0.5. ltoreq.L 2/L1. ltoreq.0.6, and/or

The length L3 of the gas outlet pipeline and the length L4 of the gas outlet rectifying piece satisfy that: L4/L3 is more than or equal to 0.5 and less than or equal to 0.6.

5. The cooking appliance of claim 2,

the inner diameter phi 1 of the air inlet pipeline and the outer diameter phi 2 of the air inlet rectifying part meet the following conditions: phi 2/phi 1 is more than or equal to 0.4 and less than or equal to 0.6, and/or

The inner diameter phi 3 of the gas outlet pipeline and the outer diameter phi 4 of the gas outlet rectifying part meet the following requirements: phi 4/phi 3 is more than or equal to 0.4 and less than or equal to 0.6.

6. The cooking appliance of claim 2,

the air inlet rectifying piece and the air outlet rectifying piece are both springs,

wherein the outer diameter phi 2 of the air inlet rectification piece, the inner diameter phi 5 of the air inlet rectification piece and the pitch C1 of the air inlet rectification piece satisfy the following conditions: 0.2mm < C1- (phi 2-phi 5)/2 < 0.8mm, and/or

The outer diameter phi 4 of the air outlet rectifying piece, the inner diameter phi 6 of the air outlet rectifying piece and the pitch C2 of the air outlet rectifying piece satisfy the following conditions: c2- (phi 4-phi 6)/2 is not more than 0.8mm and not more than 0.2 mm.

7. The cooking appliance of claim 2,

the outer diameter phi 2 of the air inlet rectifying part and the inner diameter phi 5 of the air inlet rectifying part meet the following condition: (phi 2-phi 5)/2 is less than or equal to 0.2, and/or

The outer diameter phi 4 of the air outlet rectifying part and the inner diameter phi 6 of the air outlet rectifying part meet the following conditions: (phi 4-phi 6)/2 is less than or equal to 0.2.

8. The cooking appliance of claim 2, 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 air inlet pipeline is used for communicating the cover air inlet 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 and an eccentric shaft connected to said eccentric wheel, said eccentric wheel being connected to said electric drive unit, said electric drive unit being able to drive 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 in switching between said squeezed state and said restored state.

11. The cooking appliance of claim 10 wherein said airflow generating means includes a closed end and an air guide end at each end of said flexible chamber, said eccentric shaft being connected to said closed end and said air inlet and outlet valve means being connected to said air guide end.

12. The cooking appliance according to any one of claims 1 to 8, wherein the air inlet and outlet valve device comprises a first valve body, a second valve body, an air inlet diaphragm and an air outlet diaphragm, the first valve body is provided with an air inlet channel and an air outlet channel which are respectively communicated with the flexible cavity, the valve air inlet and the valve air outlet are respectively arranged on the second valve body, the air inlet diaphragm and the air outlet diaphragm are respectively connected to the first valve body corresponding to the air inlet channel and the air outlet channel, the air inlet diaphragm can elastically deform along with the air flow direction to communicate or block the air inlet channel and the valve air inlet, and the air outlet diaphragm can elastically deform along with the air flow direction to communicate or block the air outlet channel and the valve air outlet.

13. The cooking appliance of claim 12, wherein said air inlet and outlet valve assembly further comprises a sealing diaphragm, a peripheral edge of said sealing diaphragm being disposed between said first valve body and said second valve body, and said sealing diaphragm being provided with an inlet air passage port communicating said valve inlet with said inlet air passage and an outlet air passage port communicating said valve outlet with said outlet air passage.

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