CN217185666U - 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 electric gas exchange device comprises an electric drive unit, a transmission device, a gas flow generating device and a gas inlet and outlet valve device; the transmission device is connected with the electric drive unit to do reciprocating motion; the airflow generating device is connected with the transmission device and is provided with a flexible cavity; the air inlet and outlet valve device is connected with the air flow generating device and is provided with a valve air inlet and a valve air outlet; 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; at least one of the air inlet pipeline and the air outlet pipeline is connected with a pulse airflow buffer, and the volume of the inner space of the pulse airflow buffer is larger than the volume of the gas in the air inlet pipeline caused by the flexible cavity switching from the squeezed state to the recovered state and is larger than the volume of the gas in the air outlet pipeline caused by the flexible cavity switching from the recovered state to the squeezed state.

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 (such as electric cookers) increase the cooking speed by reducing the temperature and pressure in the pot during cooking, for example, rapid cooking is 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;

an electric gas exchange device provided in the cover or the pot body, and including:

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, the air flow generating device having a flexible cavity configured to be switchable between a squeezed state and a restored 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 at least one of the inlet conduit and the outlet conduit is connected with a pulsed airflow buffer, the volume of the inner space of the pulsed airflow buffer being greater than the volume of gas in the inlet conduit resulting from the flexible chamber switching from the compressed state to the relaxed state and greater than the volume of gas in the outlet conduit resulting from the flexible chamber switching from the relaxed state to the compressed state.

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 delivered gas is typically in a cold-hot temperature differential with the foam in the cooking space, so that the delivered gas, after entering the cooking space and contacting the foam accumulated in the cooking space, can liquefy and contract to break the vapor in the foam, preventing it from overflowing the pot. 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, by connecting a pulsed airflow buffer to at least one of the inlet line and the outlet line, the volume of the internal space of the pulsed airflow buffer is larger than the volume of the gas in the inlet line caused by the flexible cavity switching from the compressed state to the restored state and larger than the volume of the gas in the outlet line caused by the flexible cavity switching from the restored state to the compressed state, whereby the pulsed airflow buffer can convert the pulsed airflow into a smooth airflow while reducing the vibration noise of the inlet line and/or the outlet line caused by the pulsed airflow due to the reciprocating motion of the flexible cavity.

Optionally, the pulsed airflow buffer comprises a buffer portion,

the volume of the internal space of the cushioning portion is larger than the volume of gas in the inlet conduit resulting from the flexible chamber switching from the compressed state to the restored state and larger than the volume of gas in the outlet conduit resulting from the flexible chamber switching from the restored state to the compressed state,

the cross-sectional area of the buffer part is larger than that of the air inlet pipeline and larger than that of the air outlet pipeline.

According to the scheme, the buffer part can convert the pulse airflow into smooth airflow, and meanwhile vibration noise of the pulse airflow to the air inlet pipeline and/or the air outlet pipeline caused by the reciprocating motion of the flexible cavity can be reduced.

Optionally, the pulsed airflow buffer further comprises a plurality of blocking ribs uniformly arranged inside the buffer part, the plurality of blocking ribs are arranged at intervals, and/or the plurality of blocking ribs are arranged in parallel.

According to this scheme, through setting up a plurality of fender muscle, the fender muscle can be cut apart into the multilayer space with the inner space of buffer portion, when pulse air current flows through the fender muscle, can be consumed its amplitude and frequency energy by the fender muscle to can reduce the pulse air current that leads to because the reciprocating motion in flexible chamber to the inlet pipe way and/or the vibration noise of outlet pipe way.

Optionally, the buffer portion includes an annular wall extending in a circumferential direction, the rib is configured to extend inward from an inner peripheral edge of the annular wall, and the rib is provided with a through hole.

According to the scheme, the blocking rib is simple in structure, convenient to manufacture and capable of reducing production cost.

Optionally, the through holes of the plurality of ribs are not all the same size, and/or

The through holes of two adjacent blocking ribs are different in size.

According to the scheme, because the through holes of the blocking ribs are not identical in size, when the pulse airflow flows through the blocking ribs, the blocking ribs with different sizes can consume the amplitude and the frequency energy of the pulse airflow, and therefore the vibration noise of the pulse airflow to the air inlet pipeline and/or the air outlet pipeline, caused by the reciprocating motion of the flexible cavity, can be reduced.

Optionally, the pulsed air flow buffer further comprises two connecting parts, which are disposed at two ends of the buffer part and are used for connecting to the air inlet pipeline or the air outlet pipeline.

According to this scheme, through setting up two connecting portion to in being connected to connecting portion with air inlet pipe way or gas outlet pipe way.

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 air inlet communicated with the outside atmosphere, the air inlet pipeline communicates the cover air inlet with the valve air inlet,

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 exhausted from the steam outlet can form a circumferentially continuous or closed steam curtain around and above the cover air inlet so as to filter gas sucked into the cover air inlet, avoid oil smoke, dust and other impurities from being sucked into the cover air inlet, avoid oil stains or dirt even blockage in a gas pipeline, and avoid influence on the taste of food.

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.

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 diaphragm, a peripheral edge of the sealing diaphragm is arranged between the first valve body and the second valve body, and the sealing diaphragm is provided with an air inlet passage port communicating the valve air inlet with the air inlet channel and an air outlet passage port 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 utility model are used as part of the utility model for understanding the utility model. There are shown in the drawings, embodiments and descriptions thereof, for illustrating 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-B 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 cross-sectional view of a portion of the cover of FIG. 2 showing the gas exchange device, inlet lines and outlet lines;

FIG. 8 is a schematic cross-sectional view of the pulsed airflow buffer of FIG. 2;

fig. 9 is a schematic cross-sectional view of the pulsed airflow buffer of fig. 2.

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: pulse airflow buffer

171: the buffer 172: connecting part

173: annular wall 174: stop rib

175: through hole 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 190: 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" 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 in the present invention 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 illustration of a cooking appliance 100 according to an embodiment of the 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 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 means 112 may heat the inner pot 111 at the bottom and/or side of the inner pot 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 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 cover 120 and the pot body 110 is usually located at the rear end of the cooking utensil 100, so that the user can operate the cooking utensil 100 at the front end. 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 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 electric gas exchange device 130 is provided 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 an air 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 to the actuator 132, and the airflow generating device 133 has a flexible chamber 135, and the flexible chamber 135 changes shape under the reciprocating action of the actuator 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 in-out valve assembly 134 is coupled to the flow generating device 133, and the in-out valve assembly 134 has a valve inlet 145 and a valve outlet 146 that communicate with the flexible chamber 135, respectively. Air intake conduit 150 communicates valve inlet 145 with the ambient atmosphere such 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. 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.

In the present embodiment, as shown in fig. 2 and 4, a pulsed airflow buffer 170 is connected to at least one of the inlet conduit 150 and the outlet conduit 160, and the volume of the internal space of the pulsed airflow buffer 170 is greater than the volume of gas in the inlet conduit 150 resulting from the flexible chamber 135 switching from the compressed state to the restored state, and greater than the volume of gas in the outlet conduit 160 resulting from the flexible chamber 135 switching from the restored state to the compressed state. The pulsed airflow buffer 170 can convert the pulsed airflow into a smooth airflow while reducing the vibration noise of the pulsed airflow to the inlet duct 150 and/or the outlet duct 160 due to the reciprocating motion of the flexible chamber 135. Preferably, a pulsed airflow buffer 170 is connected to each of the inlet and outlet lines 150 and 160.

In order to achieve a better reduction of the vibration noise of the inlet conduit 150 and/or the outlet conduit 160 caused by the pulsating gas flow due to the reciprocating motion of the flexible chamber 135, the volume of the inner space of the pulsating gas flow buffer 170 is much larger than the volume of the gas in the inlet conduit 150 caused by the switching of the flexible chamber 135 from the compressed state to the restored state and much larger than the volume of the gas in the outlet conduit 160 caused by the switching of the flexible chamber 135 from the restored state to the compressed state. Preferably, the volume of the interior space of the pulsed airflow buffer 170 is greater than five times the volume of gas in the inlet conduit 150 resulting from the flexible chamber 135 switching from a squeezed state to a relaxed state, and greater than five times the volume of gas in the outlet conduit 160 resulting from the flexible chamber 135 switching from a relaxed state to a squeezed state. It is further preferred that the volume of the interior space of the pulsed flow buffer 170 is more than ten times the volume of gas in the inlet conduit 150 as a result of the flexible chamber 135 switching from a squeezed state to a relaxed state, and more than ten times the volume of gas in the outlet conduit 160 as a result of the flexible chamber 135 switching from a relaxed state to a squeezed state. It is further preferred that the volume of the interior space of the pulsed airflow buffer 170 is greater than twenty times the volume of gas in the inlet conduit 150 resulting from the flexible chamber 135 switching from the deflated state to the deflated state, and greater than twenty times the volume of gas in the outlet conduit 160 resulting from the flexible chamber 135 switching from the deflated state to the deflated state.

As shown in fig. 2, 4, 8, and 9, the pulse airflow damper 170 includes a buffer portion 171. The volume of the internal space of the buffer portion 171 is larger than the volume of gas in the inlet conduit 150 resulting from the flexible chamber 135 being switched from the compressed state to the restored state, and is larger than the volume of gas in the outlet conduit 160 resulting from the flexible chamber 135 being switched from the restored state to the compressed state. Further, the cross-sectional area of the buffer portion 171 is larger than the cross-sectional area of the intake duct 150 and larger than the cross-sectional area of the outlet duct 160. The buffer portion 171 can convert the pulsating airflow into a smooth airflow while reducing the vibration noise of the air inlet line 150 and/or the air outlet line 160 due to the pulsating airflow caused by the reciprocating motion of the flexible chamber 135.

The pulse airflow damper 170 further includes a plurality of ribs 174 uniformly disposed inside the buffer 171, the plurality of ribs 174 being spaced apart from each other, the ribs 174 being capable of dividing the internal space of the buffer 171 into a plurality of layers of spaces, and when the pulse airflow passes through the ribs 174, the amplitude and frequency energy of the pulse airflow are consumed by the ribs 174. Preferably, the plurality of barrier ribs 174 are arranged in parallel. Further preferably, the plurality of ribs 174 are disposed at equal intervals. Specifically, the buffer portion 171 includes an annular wall 173 extending in the circumferential direction, and the stopper rib 174 is configured to extend inward from an inner peripheral edge of the annular wall 173.

The stopper rib 174 is provided with a through hole 175. The through-holes 175 may be circular holes, elliptical holes, polygonal holes, or any other suitable shape. Preferably, the through holes 175 of the plurality of ribs 174 are not all the same size. It is further preferable that the through holes 175 of adjacent two of the barrier ribs 174 are different in size. Since the through holes 175 of the plurality of ribs 174 are not exactly the same size, when the pulse air flows through the ribs 174, the amplitude and frequency energy of the pulse air flow is consumed by the ribs 174 of different sizes, and when the inner space of the pulse airflow buffer 170 is filled with the air flow, the air flow from the outlet end of the buffer can become (approximately) smooth continuous air flow. Thereby reducing the vibrational noise of the inlet conduit 150 and/or outlet conduit 160 caused by the pulsating airflow resulting from the reciprocating motion of the flexible chamber 135.

As shown in fig. 8 and 9, the pulse airflow buffer 170 further includes two connection portions 172, and the two connection portions 172 are disposed at both ends of the buffer portion 171 and are used to be connected to the intake duct 150 or the outlet duct 160 such that the internal space of the pulse airflow buffer 170 communicates with the internal space of the intake duct 150 or the outlet duct 160.

As shown in fig. 6 and 7, transmission 132 comprises eccentric wheel 136, eccentric sleeve 137 and eccentric shaft 149 connecting eccentric wheel 136 with eccentric sleeve 137, eccentric wheel 136 being connected with electric drive unit 131, electric drive unit 131 being able to drive eccentric wheel 136 and eccentric shaft 149 in rotation, eccentric shaft 149 being connected with air flow generating device 133 via eccentric sleeve 137 to drive flexible chamber 135 between a squeezed state and a 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 peak 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 compliance cavity 135 more easily compressible and stretchable, less prone to breakage and reliable fatigue life by configuring the side wall 182 of the compliance cavity 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 cavity 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 be elastically deformed in accordance with the direction of the air flow 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 inlet mounting post 156 and an outlet 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. The outlet diaphragm 152 is provided with an outlet mounting hole 159, and the outlet mounting post 157 extends through the outlet mounting hole 159 and is held to the outlet diaphragm 152 to detachably connect the outlet diaphragm 152 to the first valve body 141.

It is understood that, for example, when the pulse airflow damper 170 is connected to the air inlet pipeline 150, two connecting portions 172 of the pulse airflow damper 170 may be respectively connected to a segment of the air inlet pipeline 150, wherein one segment of the air inlet pipeline 150 is connected to the valve air inlet 145, and wherein another segment of the air inlet pipeline 150 is connected to the cover air outlet 128. When the outlet pipeline 160 is connected to the pulse airflow buffer 170, two connecting portions 172 of the pulse airflow buffer 170 may be connected to a section of the outlet pipeline 160, wherein a section of the outlet pipeline 160 is connected to the valve outlet 146, and another section of the valve outlet 146 is connected to the cover inlet 125.

The air inlet and outlet valve assembly 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 opening 185 that communicates valve inlet opening 145 with inlet gas passage 147 and an outlet gas passage opening 186 that communicates valve outlet opening 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 of an oval shape, a polygonal shape, or any other suitable shape as necessary.

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 of continuous motion, with continuous flow 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 air inlet 125, the steam discharged through the steam outlet 127 forms a circumferentially continuous or closed steam curtain around and above the cover air inlet 125 to filter the air sucked into the cover air inlet 125, thereby preventing impurities such as oil smoke, dust and the like from being sucked into the cover air inlet 125, avoiding oil stains or dirt from remaining in the air pipeline and even blocking the air pipeline, and avoiding affecting the taste of food.

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 comprises a noise reduction upper shell 183, a noise reduction lower shell 184 and a shock absorption sleeve 181, wherein the noise reduction upper shell 183 is arranged 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 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, etc.

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. Those skilled in the art will appreciate that numerous variations and modifications are possible in light of the teachings of the present invention, and are within the scope of the invention as claimed.

Claims (12)

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 at least one of the inlet conduit and the outlet conduit is connected to a pulsed airflow buffer, the volume of the interior space of the pulsed airflow buffer being greater than the volume of gas in the inlet conduit resulting from the flexible chamber switching from the crushed state to the recovered state and greater than the volume of gas in the outlet conduit resulting from the flexible chamber switching from the recovered state to the crushed state.

2. The cooking appliance of claim 1,

the pulsed airflow buffer includes a buffer portion,

the volume of the internal space of the cushioning portion is larger than the volume of gas in the inlet conduit resulting from the flexible chamber switching from the compressed state to the restored state and larger than the volume of gas in the outlet conduit resulting from the flexible chamber switching from the restored state to the compressed state,

the cross-sectional area of the buffer part is larger than that of the air inlet pipeline and larger than that of the air outlet pipeline.

3. The cooking appliance of claim 2, wherein the pulse draft damper further comprises a plurality of ribs uniformly disposed inside the cushioning portion, the plurality of ribs being disposed spaced apart from each other, and/or the plurality of ribs being disposed in parallel.

4. The cooking appliance of claim 3 wherein said bumper portion includes a circumferentially extending annular wall, said rib is configured to extend inwardly from an inner peripheral edge of said annular wall, and said rib is provided with a through hole.

5. The cooking appliance of claim 4,

the through holes of the plurality of blocking ribs are not all the same size, and/or

The through holes of two adjacent blocking ribs are different in size.

6. The cooking appliance of claim 2, wherein the pulse airflow damper further comprises two connecting portions provided at both ends of the damper portion and adapted to be connected to the air inlet duct or the air outlet duct.

7. 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.

8. The cooking appliance according to any one of claims 1 to 7,

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 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.

9. The cooking appliance according to any one of claims 1 to 7, 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.

10. The cooking appliance of claim 9 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.

11. The cooking appliance according to any one of claims 1 to 7, 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 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.

12. The cooking appliance of claim 11, 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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