CN217185667U - Cooking utensil - Google Patents

Abstract

The utility model provides a cooking utensil, including lid, a kind of deep pot body and electronic gas exchange device. 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 electric drive unit has an output shaft which can be driven into a concentric rotary motion with a predetermined rotational speed. The transmission has an eccentric configuration which is connected to the output shaft and is thereby driven by the latter into an eccentric rotary motion with an eccentricity. The airflow generating device is connected with the transmission device and is provided with a flexible cavity, and the flexible cavity is switched between a squeezed state and a recovered state under the reciprocating motion effect of the transmission device. The air inlet and outlet valve device is connected with the flexible cavity, the air inlet and outlet valve device is provided with a valve air inlet and a valve air outlet, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space. The cooking appliance according to the present invention can provide gas exchange for the cooking space, thereby preventing the cooking water in the cooking space from overflowing.

Description

Cooking utensil

Technical Field

The utility model relates to the technical field of household appliances, more specifically, the utility model relates to a cooking utensil.

Background

In order to increase the cooking rate, the known cooking appliances (such as electric cookers) usually have high heating power, but in the actual use process, when the food materials are heated and boiled by continuous high fire, a large amount of foam is generated, so that the problem of overflowing is caused.

Therefore, there is a need for a cooking appliance that at least partially solves 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.

The utility model provides a cooking utensil. The cooking appliance includes:

a cover body;

the cover body is arranged on the cooker body, and when the cover body covers the cooker body, a cooking space is formed between the cover body and the cooker body;

an electric gas exchange device disposed in the lid or the pot body, comprising:

an electric drive unit having an output shaft which can be driven into a concentric rotary motion with a predetermined rotational speed;

a transmission device with an eccentric structure, the transmission device is connected with the output shaft so as to be driven by the output shaft to perform eccentric rotary motion with eccentricity;

the air flow generating device is connected with the transmission device and is provided with a flexible cavity, and the flexible cavity is switched between a squeezed state and a recovered state under the reciprocating motion action of the transmission device;

and the air inlet and outlet valve device is connected with the flexible cavity and is provided with a valve air inlet and a valve air outlet, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space.

During cooking, the electrically powered gas exchange device is capable of drawing gas in through the valve inlet and delivering gas into the cooking volume through the valve outlet when food in the cooking volume is in a boiling stage. 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. In addition, in the scheme, the airflow generating device can realize the pressure and speed change of the airflow through the compression and the stretching of the flexible cavity with a certain volume, and can realize the automatic control of the airflow by combining the electric driving unit, the air inlet and outlet valve device and the like, thereby providing a gas exchange function for the cooking space. The scheme can realize large air flow, and is convenient to operate and low in cost.

Optionally, the side wall of the flexible chamber is a corrugated structure comprising at least one peak configuration. The scheme enables the flexible cavity to be compressed and stretched more easily by constructing the side wall of the flexible cavity into a corrugated structure, and the flexible cavity is not easy to break and has reliable fatigue life.

Optionally, the eccentricity c satisfies: c is more than 0 and less than or equal to 1mm, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 3000-3500 RPM.

Optionally, the eccentricity c satisfies: 1mm < c < 2mm, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 2500-.

Optionally, the corrugated structure includes a plurality of wave peak configurations, a minimum distance between two adjacent wave peaks is L2, and the eccentricity c satisfies: c is more than or equal to 2mm and less than or equal to L2, and the cross section of the wave crest structureThe product S and the cross-sectional area S1 of the valley configuration satisfy: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 2000-2500 RPM.

It can be understood that in the above scheme, the electric driving unit drives the eccentric structure to compress and stretch the flexible cavity to realize gas exchange, the scheme converts the concentric rotary motion with a certain rotating speed into the eccentric rotary motion with a certain eccentricity in the action process, and the load is not uniform in the process of one revolution, so that the gravity center of the whole system deviates from the axis of the electric driving unit, and vibration and noise with larger amplitude occur. It will be further appreciated that the higher the speed of the electric drive unit, the greater the air flow, but this causes vibration noise with a higher continuous frequency, while a lower motor speed results in a lower air flow. And this application can guarantee big air flow through the rotational speed scope of reasonable design eccentricity, flexible chamber's sectional area and electric drive unit, makes it satisfy the requirement of quick culinary art to can be at minimum with entire system's vibration noise control.

In addition, because the degree of compression of the flexible cavity is related to the eccentricity of the eccentric structure, the scheme can avoid friction between adjacent corrugations when the flexible cavity is compressed by enabling the eccentricity of the eccentric structure to be smaller than the minimum distance between two adjacent wave crests, so that the friction noise can be avoided.

Optionally, the corrugated structure includes n peak configurations, where 2 ≦ n ≦ 8. The scheme can enable the structure of the flexible cavity to be more compact under the condition of realizing the atmospheric flow.

Optionally, the width L1 of an individual wave trough in the corrugated structure in the axial direction of the flexible cavity satisfies: l1 is more than or equal to 1mm and less than or equal to 2mm, and/or the minimum distance L2 between two adjacent wave crests meets the requirement that L2 is more than or equal to 3mm and less than or equal to 4 mm. According to the scheme, the width of a single wave trough is set in the range, the contact area of two adjacent waves can be reduced, two adjacent wave crests can be ensured to be in contact to the maximum extent while the adjacent wave troughs cannot be in contact, the friction between the adjacent waves can be reduced, the service life of the wave troughs is prolonged, and the noise generated by the friction between the adjacent waves can be reduced. Further, by setting the minimum pitch between adjacent two peaks within the above range, the amount of air flow can be increased.

Optionally, a steam channel communicating the cooking space with the outside of the cooking appliance is arranged on the cover body, and the steam channel is communicated with the outside of the cooking appliance through a steam outlet arranged on the cover body;

the cover body is also provided with a cover air inlet which is communicated with the valve air inlet, and the position of the steam outlet on the cover body is positioned on the outer peripheral side of the cover air inlet.

In this scheme, because the steam outlet sets up around the lid air inlet, consequently, steam via steam outlet exhaust can form around the lid air inlet and the top in the circumference in succession or confined steam curtain to filter the gas of inhaling the lid air inlet, avoided debris such as oil smoke, dust to inhale in the lid air inlet, thereby left greasy dirt or dirt and even blockked up in having avoided the gas pipeline, also avoided influencing the taste of food.

Optionally, the steam outlet is annular; or the steam outlet comprises a plurality of sub-steam outlets spaced around the lid air inlet.

Optionally, the lid air inlet communicates with the valve air inlet through an air inlet duct, the lid air inlet is disposed at a first end of the air inlet duct, the cooking appliance further comprises a stopper member covering the first end of the air inlet duct and forming an air inlet gap with the first end of the air inlet duct. The scheme can further ensure that other impurities cannot enter the air inlet pipeline together with the outside air, and avoids the blockage of the air inlet pipeline.

Optionally, the cooking appliance further comprises a water-proof structure disposed at least partially between the steam outlet and the lid air inlet to prevent liquid from entering the lid air inlet.

Optionally, the waterproof structure is a boss, and the boss is higher than the steam outlet.

In this way, condensate will not pass over the boss into the cover air inlet under the influence of gravity.

Optionally, the transmission device comprises an eccentric wheel and an eccentric connecting rod connected with the eccentric wheel, the eccentric wheel is connected with the output shaft, and the eccentric connecting rod is connected with the airflow generation device. The scheme is 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 link is connected to the closed end, and the air inlet and outlet valve device is connected to the air guide end. The scheme is convenient to assemble and easy to realize.

Optionally, the air valve inlet and outlet device comprises a first valve body, a second valve body and a one-way valve film arranged between the first valve body and the second valve body, the valve air inlet and the valve air outlet are respectively arranged on the second valve body, the first valve body is provided with an air inlet channel and an air outlet channel which respectively correspond to the valve air inlet and the valve air outlet, the one-way valve film comprises two flexible membranes which respectively correspond to the valve air inlet and the valve air outlet, and the flexible membranes can realize elastic deformation along with the air flow direction. The scheme is convenient to assemble, easy to realize and low in cost.

Optionally, the flexible diaphragm is connected to the one-way valve film through a connecting rib, and a through port is formed between the flexible diaphragm and the one-way valve film. The scheme is convenient to assemble, easy to realize and low in cost.

Optionally, a first retaining ring is arranged at a position of the first valve body corresponding to the valve air outlet, a second retaining ring is arranged at a position of the second valve body corresponding to the valve air inlet, and the first retaining ring and the second retaining ring respectively protrude towards the corresponding flexible diaphragm and abut against the flexible diaphragm. The scheme can conveniently realize the one-way inlet and outlet of gas.

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 devices and principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic cross-sectional view of a portion of a cooking appliance according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a portion of the lid of the cooking appliance shown in FIG. 1, with the face cover omitted to clearly show the structure of the interior of the lid;

FIG. 3 is a schematic sectional view of the cover shown in FIG. 2 taken along the direction A-B-C, in which a portion of the structure of the cover is omitted;

FIG. 4 is a schematic sectional view of the cover shown in FIG. 2 taken along the direction M-N-C, in which a portion of the structure of the cover is omitted;

FIG. 5 is a schematic cross-sectional view of an electric gas exchange device of the cooking appliance shown in FIG. 1;

FIG. 6 is a schematic assembly view of the electric drive unit, the transmission and the gas flow generating device of the electric gas exchange device shown in FIG. 5;

FIG. 7 is a schematic cross-sectional view of the gas flow generating device of the electrical gas exchange device shown in FIG. 5;

FIG. 8 is a schematic cross-sectional view of the inlet and outlet gas valve assembly of the electrical gas exchange device shown in FIG. 5;

fig. 9 is a schematic view of a portion of a lid of a cooking appliance according to an embodiment of the present invention;

FIG. 10 is a perspective view of the electric gas exchange device of the cooking appliance shown in FIG. 1, wherein a damping sleeve is provided on the exterior of the electric gas exchange device.

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 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 the present invention.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

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

As shown in fig. 1, the cooking appliance 100 includes a pot body 110. The pot body 110 may be in a generally rounded rectangular parallelepiped shape, a generally cylindrical shape, or any other suitable shape. The pot body 110 has a substantially cylindrical shape or any other suitable shape of the inner pot 130 disposed therein. The inner pot 130 can be freely put into or taken out of the inner pot receiving part of the pot body 110 to facilitate the cleaning of the inner pot 130. The inner pot 130 is used to store food to be cooked, such as rice, soup, etc. The top of the inner pot 130 has a top opening. The user can store food to be cooked in the inner pot 130 through the top opening or take cooked food out of the inner pot 130 through the top opening.

An inner pot heating means (not shown) for heating the inner pot 130 is further provided in the pot body 110. The inner pot heating means may heat the inner pot 130 at the bottom and/or side of the inner pot 130. The inner pot heating device can be an electric heating tube, and can also be an induction heating device such as an electromagnetic coil.

As shown in fig. 1, the pot body 110 is provided with a lid 120. 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 body 120 includes an inner cover 123, and the inner cover 123 may be a detachable inner cover so that the inner cover 123 can be detached for cleaning. 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 130 of the pot body 110. Specifically, in the present embodiment, the cover 120 may be pivotably disposed above the pot body 110 between the maximum open position and the closed position by, for example, hinging. The hinged position of the lid 120 and the pot body 110 is generally located at the rear end of the cooking appliance 100, so that the user can operate at the front end of the cooking appliance 100. It should be noted that the terms "front" and "rear" are used herein with reference to the position where the user uses the cooking appliance. Specifically, a direction in which the cooking appliance faces the user is defined as "front", and a direction opposite thereto is defined as "rear".

As shown in fig. 1, when the cover 120 is closed over the pot body 110, a cooking space 140 is formed between the cover 120 and the pot body 110 (specifically, the inner pot 130 of the pot body 110). The cooking space 140 includes a food storage space 141 and a cavity space 142. Specifically, the food storage space 141 refers to a space where food is actually stored. The cavity space 142 is located above the food storage space 141. That is, when the cover 120 is covered on the pot body 110, the cavity space 142 is a space between the upper surface of the food and the cover 120. There is no strict distinction between the food storage space 141 and the cavity space 142, 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. 1, the cover 120 is provided with a cover inlet 121. One end of the cover air inlet 121 communicates with the outside, and the other end communicates with an electric gas exchange device 150 (as shown in fig. 2, more specifically, an air inlet end of the electric gas exchange device 150) provided in the pot body 110 or the cover body 120, which will be described in detail later, to deliver the outside air (e.g., cold air) to the cooking space 140 (more specifically, the cavity space 142) through the electric gas exchange device 150.

Hereinafter, an electric gas exchange device according to an embodiment of the present invention will be described in detail.

The cooking appliance 100 further includes an electric gas exchange device 150, and the electric gas exchange device 150 is used for sucking gas (e.g., external cold air) outside the cooking appliance 100 into the cavity space 142. Preferably, the electrically powered gas exchange device 150 is disposed in the cover 120.

The electrically powered gas exchange device 150 may be disposed at any suitable location on the cooking appliance 100. In a preferred embodiment of the present invention, as shown in fig. 1-4, an electric gas exchange device 150 is provided in the cover body 120 so as to communicate with a cover air inlet 121 provided in the cover body 120 through an air inlet line. It is further preferred that the electrically powered gas exchange device 150 be substantially horizontally reclined in the cover 120 to reduce the size of the cover 120 in the vertical direction. For example, the electrical gas exchange device 150 may be disposed between the inner liner and the upper cover of the cover 120.

As shown in fig. 5, the electric gas exchange device 150 includes an electric driving unit 151, a transmission device 160, a gas flow generating device 170, and an inlet and outlet gas valve device 180 connected to the gas flow generating device 170. The electric drive unit 151 may be configured as a motor having an output shaft 151 a. Wherein the motor can drive the output shaft 151a to perform a concentric rotary motion with a predetermined rotational speed. The transmission 160 is connected to the electric drive unit 151, and the transmission 160 has an eccentric structure, so that the electric drive unit 151 can drive the transmission 160 to perform an eccentric rotation motion with a certain eccentricity c. The airflow generating device 170 has a flexible chamber 171, and the flexible chamber 171 is connected to the actuator 160 so as to be changed in shape by the reciprocating motion of the actuator 160. Specifically, the flexible chamber 171 can be switched between a squeezed state and a restored state, and when the flexible chamber 171 is switched between the two states, the volume of the flexible chamber 171 can be changed, so that pressure change can be generated in the flexible chamber 171. The air inlet and outlet valve device 180 is connected with the flexible cavity 171, the air inlet and outlet valve device 180 is provided with a valve air inlet 181 and a valve air outlet 182 which can be communicated with the cavity of the flexible cavity 171, and the valve air inlet 181 and the valve air outlet 182 are both one-way through ports. The valve inlet port 181 is in communication with the ambient atmosphere such that ambient atmosphere can enter the flexible chamber 171 via the valve inlet port 181. Valve outlet 182 communicates with the cooking volume such that gas in flexible chamber 171 can enter the cooking volume via valve outlet 182. The structure of the air inlet and outlet valve device 180 will be described in detail later.

Specifically, the valve inlet port 181 communicates with the cap inlet port 121 through an inlet line (not shown) to allow the outside atmosphere to enter. A first end of the inlet line communicates with the lid inlet port 121 and a second end of the inlet line is connected to the valve inlet port 181. The valve outlet 182 communicates with the lid outlet 122 via an outlet conduit (outlet route can refer to fig. 4), and the lid outlet 122 can be disposed on the inner lid to let the outside atmosphere enter the cooking space. The inlet and outlet conduits may be made of an elastic material such as silicone.

As shown in fig. 5, the transmission device 160 includes an eccentric 161 and an eccentric connecting rod 162 connected to the eccentric 161 via an eccentric shaft 161a, the eccentric 161 is connected to an output shaft 151a of the electric driving unit 151, the electric driving unit 151 can drive the eccentric 161 to rotate, the eccentric 161 can drive the eccentric connecting rod 162 to rotate, and the eccentric connecting rod 162 is connected to the flexible chamber 171. It should be noted that the "eccentricity" mentioned above refers to a distance that the force-receiving center of the transmission 160 deviates from the central axis of the output shaft 151a, that is, a distance c between the central axis of the eccentric wheel shaft 161a and the central axis of the output shaft 151a shown in fig. 5.

Specifically, the air flow generating device 170 includes a closed end 172 and an air guide end 173 respectively located at both ends of the flexible chamber 171, the eccentric link 162 is connected to the closed end 172, and the air inlet and outlet valve device 180 is connected to the air guide end 173.

As shown in fig. 6 and 7, the closed end 172 of the flexible chamber 171 has a through hole 174, the through hole 174 penetrates in the longitudinal direction of the eccentric link 162, and the eccentric link 162 extends into the through hole 174. When the eccentric link 162 rotates, the flexible chamber 171 is linearly reciprocated.

In a preferred embodiment, the side wall of the flexible chamber 171 is configured as a corrugated structure, and the corrugated flexible chamber 171 may be brought into reciprocating compression and tension when the eccentric link 162 rotates. The corrugated structure includes a plurality of peak configurations and valley configurations. This solution enables the flexible chamber 171 to be more easily compressed and stretched, and less easily broken, and has a reliable fatigue life by configuring the sidewalls of the flexible chamber 171 as a corrugated structure.

Because the air cavity quantity of flexible chamber and air flow size become the positive correlation relation, for making the air flow be greater than 2L/min to satisfy the requirement of quick cooking, and for making this flexible chamber can more adapt to the size of current cooking utensil's inside lining (current cooking utensil's inside lining diameter is less than 245mm usually), in this scheme, make the quantity n of crest structure satisfy: n is more than or equal to 2 and less than or equal to 8. Further preferably, the number n of peak configurations satisfies: n is more than or equal to 2 and less than or equal to 4. Illustratively, the corrugated structure may include 3 wave peak configurations, which can be set by one skilled in the art according to actual needs.

In order to reduce the area where two adjacent corrugations contact during the reciprocating motion of the flexible chamber 171, thereby reducing friction and noise, it is preferable that, as shown in fig. 7, the width L1 of the individual wave troughs in the corrugated structure in the axial direction of the flexible chamber 171 satisfies: l1 is more than or equal to 1mm and less than or equal to 2mm, and the minimum distance L2 between two adjacent wave crests meets the requirement that L2 is more than or equal to 3mm and less than or equal to 4 mm. This scheme can minimize the area where the adjacent two corrugations contact by setting the width of the single wave trough in the axial direction of the flexible chamber 171 and the minimum distance between the adjacent two wave crests within the above-mentioned ranges, and can ensure that the adjacent two wave crests do not contact while contacting at the maximum, so that the friction between the adjacent corrugations can be reduced, the service life thereof can be improved, and the scheme can also reduce the noise generated by the friction between the adjacent corrugations. Further, by setting the interval between the adjacent two peaks within the above range, the air flow amount can be secured. Illustratively, the width L1 of a single wave trough along the axial direction of the flexible cavity 171 may be set to 1.5mm, 1.8mm, etc., and the minimum distance L2 between two adjacent wave crests may be set to 3.5mm, 3.6mm, etc., which may be set by those skilled in the art according to actual needs.

Preferably, the wall thickness h1 of the main body portion of the flexible chamber 171 satisfies: 0.2mm h1 1.2mm, wherein the main portion of the flexible chamber 171 is a corrugated structure in the middle section of the flexible chamber 171 and does not include the closed end 172 and the air guide end 173. Illustratively, the wall thickness h1 of the main body portion of the flexible cavity 171 may be set to 0.5mm, 0.8mm, 1mm, etc., which may be set by one skilled in the art according to actual needs. This scheme is through setting up the wall thickness of flexible chamber 171 in above-mentioned within range, can be under the prerequisite of guaranteeing the elasticity compressive force of flexible chamber 171, prolongs the fatigue life of this flexible chamber 171, avoids it to appear warping, influences the air flow.

It can be understood that in the above-mentioned scheme, the gas exchange is realized by compressing and stretching the flexible chamber 171 by driving the eccentric structure by the electric driving unit 151, and the scheme converts the concentric revolution motion of a certain rotation speed of the output shaft 151a into the eccentric revolution motion of an eccentric structure with a certain eccentricity during the action, and since the load is not uniform during one revolution, the center of gravity of the whole system deviates from the central axis of the electric driving unit 151, so that vibration and noise with large amplitude occur. It will be appreciated that the higher the speed of rotation of the electric drive unit 151, the greater the amount of airflow, but this also causes vibration noise with a higher continuous frequency, while a lower speed of rotation of the electric drive unit 151 results in a lower amount of airflow. The applicant found that by properly designing the cross-sectional area of the flexible chamber 171, the eccentricity and the rotation speed range of the electric drive unit 151, the vibration noise of the whole system can be minimized, and the air flow range can reach 2LPM or more, which can meet the requirement of fast cooking.

Thus, in a preferred embodiment, the eccentricity c satisfies: c is more than 0 and less than or equal to 1mm, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed of output shaft 151a of electric drive unit 151 is set to 3000-3500 RPM.

In another preferred embodiment, the eccentricity c satisfies: c is more than 1mm and less than 2mm, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 2500-3000 RPM.

In a further preferred embodiment, the eccentricity c satisfies: 2mm ≦ c ≦ L2 (minimum spacing between two adjacent peaks), and the cross-sectional area S of the peak configuration and the cross-sectional area S1 of the valley configuration satisfy: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotational speed is 2000-2500 RPM.

This application can guarantee the big airflow through the rotational speed scope of the cross-sectional area of rational design eccentricity, flexible chamber and electric drive unit, makes it satisfy the requirement of quick culinary art to can be at minimum with entire system's vibration noise control. In addition, since the compression degree of the flexible cavity is related to the eccentricity of the eccentric structure, the above scheme can avoid the friction between the adjacent corrugations when the flexible cavity is compressed by making the eccentricity c of the eccentric structure smaller than the minimum distance L2 between the adjacent two wave crests, thereby avoiding the friction noise.

The gas inlet and outlet valve device 180 can realize one-way passage of gas. Specifically, as shown in fig. 5 and 8, the air inlet and outlet valve device 180 includes a first valve body 178, a second valve body 179, and a check valve film 183 disposed between the first valve body 178 and the second valve body 179. The first valve body 178 is disposed closer to the flexible chamber 171, the first valve body 178 is provided with an inlet channel 184 and an outlet channel 185, the inlet channel 184 and the outlet channel 185 correspond to the valve inlet 181 and the valve outlet 182, respectively, and the valve inlet 181 and the valve outlet 182 are disposed on the second valve body 179, respectively.

Be provided with the diaphragm 186 that admits air and the diaphragm 187 of giving vent to anger that corresponds with valve air inlet 181 and valve gas outlet 182 respectively on the check valve membrane 183, admit air diaphragm 186 and the diaphragm 187 of giving vent to anger are the flexibility, and two flexible diaphragms pass through the splice bar and connect on check valve membrane 183, and have the through-hole between flexible diaphragm and the check valve membrane 183. Preferably, as shown in fig. 8, the portion of the check valve film 183 where the inlet diaphragm 186 and the outlet diaphragm 187 are provided is thinner than the other portion of the check valve film 183. In one embodiment, this is accomplished by providing a recess in the check valve membrane 183. Specifically, the recess at inlet diaphragm 186 opens toward first valve body 178, and the recess at outlet diaphragm 187 opens toward second valve body 179. This arrangement makes it easier for inlet diaphragm 186 and outlet diaphragm 187 to deform during inlet and outlet, thereby facilitating the passage of gas.

Further, in order to realize the one-way passage of the gas, a first retainer ring 188 is disposed at a position of the first valve body 178 corresponding to the valve outlet 182, and the first retainer ring 188 protrudes toward the outlet diaphragm 187 and abuts on the outlet diaphragm 187. A second stopper 189 is provided at a position of the second valve body 179 corresponding to the valve inlet 181, and the second stopper 189 protrudes toward the inlet diaphragm 186 and abuts on the inlet diaphragm 186.

When ambient air flows from the valve inlet 181 into the flexible chamber 171, the air flow will bend the inlet diaphragm 186 so that it can enter the flexible chamber 171 through the inlet passage 184. At this time, air flow also enters the valve outlet 182, but the air outlet diaphragm 187 is blocked by the first retaining ring 188 and cannot be bent, so that the air flow cannot pass through; similarly, when the airflow in the flexible cavity 171 enters the cooking space through the valve outlet 182, the outlet diaphragm 187 is bent by the airflow and flows out through the valve outlet 182, and meanwhile, the airflow in the flexible cavity 171 also passes through the inlet channel 184, but the inlet diaphragm 186 is blocked by the second baffle 189 and cannot be bent, so that the airflow cannot pass through. The purpose of single channel one-way passing can be achieved through the mode.

During cooking, when the temperature of the food cooked in the inner pot is critically boiled or just before the boiling time is over, or when the temperature in the inner pot reaches a set value, viscous substances such as starch in the food are separated into water, and steam is wrapped to form a large amount of foam, which is accumulated in the cavity space 142 above the food storage space 141. The electric driving unit 151 can be controlled to drive the transmission 160 to reciprocate, so as to compress and stretch the flexible chamber 171. When the eccentric 161 is in a position proximate to the flexible chamber 171, the flexible chamber 171 is compressed, the chamber volume is reduced, the chamber interior air pressure is greater than the chamber exterior air pressure, forcing air out through the air outlet passage and valve outlet. When the eccentric 161 is in a position away from the flexible cavity 171, the flexible cavity 171 is stretched, the cavity volume is increased instantaneously, the air pressure inside the cavity is small, and the air with the external large pressure enters the flexible cavity 171 through the valve air inlet 181 and the air inlet passage 184. The compression and extension of the flexible chamber 171 is accomplished in a cycle of motion, such that there is a continuous flow of gas out of the valve outlet 182 into the chamber volume 142. Generally, the temperature difference between the delivered gas and the foam in the chamber space 142 exists, so that the delivered gas can liquefy and shrink the steam in the foam to be broken after entering the chamber space 142 and contacting the foam accumulated in the chamber space 142, thereby preventing the overflow. The overflow can be avoided even under the condition of quick cooking with large fire.

As shown in fig. 1, 3 and 9, the cover body 120 is further provided with a steam valve assembly 190, the steam valve assembly 190 including a steam passage 191 communicating the cooking space with the outside of the cooking appliance, a steam inlet 192 and a steam outlet 193, and the steam outlet 193 may be provided on the decorative cover of the cover body 120 for discharging steam. The steam inlet 192 communicates with the cavity space 142. The steam inlet 192 may be provided on the inner lid 123.

As described above, the gas delivered from the electrical gas exchange device 150 can liquefy and contract the vapor in the foam accumulated in the cavity space 142 and break the foam after entering the cavity space 142. The transferred gas can be discharged to the outside together with or in the form of steam through the steam inlet 192, the steam channel 191 and the steam outlet 193 after striking the bubbles, taking away a part of heat, so that the generation of bubbles can be suppressed, and the pressure can be lowered to further prevent overflowing.

In a preferred embodiment, as shown in FIG. 9, the vapor outlet 193 is disposed around the lid air inlet 121. I.e., the steam outlet 193 is disposed around the lid air inlet 121. During the operation of the cooking appliance 100, when the food in the food storage space 141 is in the boiling stage, a large amount of steam is generated in the cavity space 142, and the steam is discharged through the steam inlet 192, the steam channel 191 and the steam outlet 193. At the same time, as described above, the electric gas exchange device 150 also starts operating to suck gas from the lid gas inlet 121 and to deliver the sucked gas into the cavity space 142 through the lid gas outlet 152. Because the steam outlet 193 is disposed around the cover inlet 121, the steam discharged through the steam outlet 193 forms a circumferentially continuous or closed steam curtain around and above the cover inlet 121 to filter the air sucked into the cover inlet 121, thereby preventing impurities such as oil smoke and dust from being sucked into the cover inlet 121, avoiding oil stains or dirt from remaining in the gas pipeline and even blocking the gas pipeline, and also avoiding affecting the taste of food.

Specifically, in one embodiment of the present invention, as shown in fig. 9, the vapor outlet 193 is disposed around the lid air inlet 121. The steam outlet 193 includes a plurality of (e.g., 2, 3, 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 arcuate, circular, rectangular, and the like. The shapes of the plurality of sub-steam outlets may be the same or different.

In a further embodiment of the invention, which is not shown, the steam outlet 193 is designed as a circumferentially closed ring which surrounds the cover air inlet 121. 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.

Preferably, the cover 120 further includes a stopper member (not shown). The stopper member covers a first end of the intake pipe, that is, an end communicating with the cap intake port 121, and forms an intake gap with the first end of the intake pipe. On the one hand, the backstop component can cover the first end of air inlet pipe way, has avoided the first end of air inlet pipe way to expose outside, and other debris (such as water, cockroach etc.) can not get into the air inlet pipe way like this, have avoided the air inlet pipe way to block up, can not influence and carry external gas to the cavity space at the culinary art in-process. On the other hand, an intake gap is formed between the stopper member and the first end of the intake pipe, so that the intake pipe can communicate with the cap intake port 121, and the external air can enter the intake pipe through the cap intake port 121. The stop member may be configured, for example, as a decorative cover that covers the first end of the intake conduit at the outer surface of the cover 120. Specifically, in one embodiment of the present invention, the stop member comprises a steam valve trim cover located on the outer surface of steam valve assembly 190. The steam valve trim cover covers a first end of the intake duct, i.e., an end communicating with the cover intake port 121.

Since the steam outlet 193 is disposed around the lid air inlet 121, the steam from the steam outlet 193 easily forms a small amount of condensed water around the lid air inlet 121. Preferably, the cover body 120 may further include a waterproof member to prevent liquid from flowing into the cover inlet port 121.

In one embodiment of the present invention, the waterproofing member may be configured as a boss located between the cover air inlet 121 and the steam outlet 193. The boss is spaced apart from the vapor outlet 193. Preferably, the boss is higher than the steam outlet 193. In this way, the bosses are blocked between the steam outlets 193 and the lid air inlet 121, and since the bosses are higher than the steam outlets 193, the condensate does not pass over the bosses into the lid air inlet 121 under the force of gravity.

When the cover body according to the above scheme is used for a cooking appliance, the steam outlet 193 is arranged around the cover air inlet, so that steam discharged through the steam outlet 193 forms a circumferentially continuous or closed steam curtain around and above the cover air inlet 121 to filter air sucked into the cover air inlet 121, and impurities such as oil smoke and dust are prevented from being sucked into the cover air inlet 121, so that oil stains or dirt even blockage left in an air pipeline is avoided, and the influence on the taste of food is also avoided.

In order to further reduce the noise of the electric gas exchange device 150 during operation, as shown in fig. 10, a damping sleeve 199 is further sleeved outside the electric gas exchange device 150, and the damping sleeve 199 may be made of a flexible material such as silicone rubber, and the like.

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 "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is not applicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it 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. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (17)

1. A cooking appliance, comprising:

a cover (120);

the cooker body (110), the cover body (120) is arranged on the cooker body (110), and when the cover body (120) covers the cooker body (110), a cooking space is formed between the cover body (120) and the cooker body (110);

an electrically powered gas exchange device (150), the electrically powered gas exchange device (150) disposed in the lid (120) or the boiler body (110), comprising:

an electric drive unit (151) having an output shaft (151a) which can be driven into a concentric rotary motion with a predetermined rotational speed;

-a transmission (160) having an eccentric configuration, said transmission (160) being connected to said output shaft (151a) so as to be driven by the latter into an eccentric revolving motion with eccentricity;

the air flow generating device (170) is connected with the transmission device (160), the air flow generating device (170) is provided with a flexible cavity (171), and under the reciprocating action of the transmission device (160), the flexible cavity (171) is switched between a squeezed state and a reset state;

an air inlet and outlet valve device (180), wherein the air inlet and outlet valve device (180) is connected with the flexible cavity (171), the air inlet and outlet valve device (180) is provided with a valve air inlet (181) and a valve air outlet (182), the valve air inlet (181) is communicated with the external atmosphere, and the valve air outlet (182) is communicated with the cooking space.

2. The cooking appliance according to claim 1, wherein the side wall of the flexible chamber (171) is a corrugated structure comprising at least one wave-crest configuration.

3. The cooking appliance of claim 2, wherein said eccentricity c satisfies: c is more than 0 and less than or equal to 1mm, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 3000-3500 RPM.

4. The cooking appliance of claim 2, wherein the eccentricity c satisfies: 1mm < c < 2mm, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 2500-.

5. The cooking appliance according to claim 2, wherein the corrugated structure comprises a plurality of wave peak configurations, a minimum distance between two adjacent wave peaks is L2, and the eccentricity c satisfies: c is more than or equal to 2mm and less than or equal to L2, and the cross-sectional area S of the wave crest structure and the cross-sectional area S1 of the wave trough structure meet the following conditions: 75mm ² ≤S1＜S≤6365mm ² The predetermined rotation speed is 2000-2500 RPM.

6. The cooking appliance of claim 2, wherein said corrugated structure includes n wave peak configurations, wherein 2 ≦ n ≦ 8.

7. The cooking appliance according to any of the claims 2 to 6, wherein the width L1 of the individual wave troughs in the corrugated structure in the axial direction of the flexible chamber (171) satisfies: l1 is more than or equal to 1mm and less than or equal to 2mm, and/or the minimum distance L2 between two adjacent wave crests satisfies 3mm and less than or equal to L2 and less than or equal to 4 mm.

8. The cooking appliance according to claim 1, wherein the cover (120) is provided with a steam channel (191) communicating the cooking space with the outside of the cooking appliance, the steam channel (191) communicating with the outside of the cooking appliance (100) through a steam outlet (193) provided on the cover (120);

the lid body (120) is further provided with a lid inlet port (121), the lid inlet port (121) communicates with the valve inlet port (181), and the position of the steam outlet (193) on the lid body (120) is located on the outer peripheral side of the lid inlet port (121).

9. The cooking appliance according to claim 8, wherein the steam outlet (193) is annular; or the vapor outlet (193) includes a plurality of sub-vapor outlets spaced around the lid air inlet (121).

10. The cooking appliance according to claim 8, wherein the lid air inlet (121) communicates with the valve air inlet (181) through an air inlet duct, the lid air inlet (121) being provided at a first end of the air inlet duct, the cooking appliance further comprising a stopper member covering the first end of the air inlet duct and forming an air inlet gap with the first end of the air inlet duct.

11. The cooking appliance according to claim 8, further comprising a water-proof structure disposed at least partially between the steam outlet (193) and the lid air inlet (121) to prevent liquid from entering the lid air inlet (121).

12. The cooking appliance of claim 11, wherein the water resistant structure is a boss that is higher than the steam outlet.

13. The cooking appliance according to claim 1, wherein the transmission means (160) comprises an eccentric wheel (161) and an eccentric connecting rod (162) connected to the eccentric wheel (161), the eccentric wheel (161) being connected to the output shaft (151a), the eccentric connecting rod (162) being connected to the air flow generating means (170).

14. The cooking appliance according to claim 13, wherein said air flow generating means (170) comprises a closed end (172) and an air guide end (173) at each end of said flexible chamber (171), said eccentric link (162) being connected to said closed end (172) and said air inlet and outlet valve means (180) being connected to said air guide end (173).

15. The cooking appliance according to claim 1, wherein the air inlet and outlet valve device (180) comprises a first valve body (178), a second valve body (179) and a one-way valve membrane (183) arranged between the first valve body (178) and the second valve body (179), the valve inlet (181) and the valve outlet (182) are respectively arranged on the second valve body (179), the first valve body (178) is provided with an air inlet channel (184) and an air outlet channel (185) corresponding to the valve inlet (181) and the valve outlet (182), respectively, the one-way valve membrane (183) comprises two flexible membranes corresponding to the valve inlet (181) and the valve outlet (182), and the flexible membranes can realize elastic deformation along with the air flow direction.

16. The cooking appliance according to claim 15, wherein the flexible membrane is connected to the one-way valve membrane (183) by a connecting rib, and a through port is provided between the flexible membrane and the one-way valve membrane (183).

17. The cooking appliance according to claim 15, wherein the first valve body (178) is provided with a first retaining ring (188) at a position corresponding to the valve outlet opening (182), and the second valve body (179) is provided with a second retaining ring (189) at a position corresponding to the valve inlet opening (181), the first retaining ring (188) and the second retaining ring (189) respectively projecting toward and abutting against the corresponding flexible diaphragm.

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