阅读说明：本技术 用于烹饪器具的破泡装置、锅盖以及烹饪器具 (Bubble breaking device for cooking appliance, pot cover and cooking appliance ) 是由 罗嗣胜 程志喜 吕伟刚 杨云 卢均山 于 2018-06-20 设计创作，主要内容包括：本发明公开了一种用于烹饪器具的破泡装置、锅盖以及烹饪器具。所述烹饪器具的锅盖具有排气通道,所述破泡装置包括：适于与所述锅盖相连的本体,所述本体内具有适于与所述排气通道连通的过气腔和外绕于所述过气腔的开口环形或闭口环形的破泡流道,所述本体设有连通所述破泡流道和所述烹饪器具的烹饪腔的进泡孔以及连通所述破泡流道和所述过气腔的进气口,其中,所述烹饪腔内的气液混合物适于从所述进泡孔进入所述破泡流道且沿所述破泡流道的周向流动以在离心力的作用下破泡并实现气液分离,气液分离形成的气体适于从所述进气口进入所述过气腔。根据本发明的用于烹饪器具的破泡装置,气液分离效率高、破泡防溢和排气降压效果好。(The invention discloses a bubble breaking device for a cooking appliance, a pot cover and the cooking appliance. The pot cover of the cooking utensil is provided with an exhaust passage, and the bubble breaking device comprises: the cooker cover comprises a body which is suitable for being connected with the cooker cover, wherein the body is internally provided with an air passing cavity which is suitable for being communicated with the exhaust channel and an open annular or closed annular bubble breaking channel which is externally wound around the air passing cavity, the body is provided with a bubble inlet hole which is communicated with the bubble breaking channel and a cooking cavity of a cooking utensil and an air inlet which is communicated with the bubble breaking channel and the air passing cavity, a gas-liquid mixture in the cooking cavity is suitable for entering the bubble breaking channel from the bubble inlet hole and flowing along the circumferential direction of the bubble breaking channel so as to break bubbles under the action of centrifugal force and realize gas-liquid separation, and gas formed by gas-liquid separation is suitable for entering the air passing cavity from the air inlet hole. The bubble breaking device for the cooking utensil has high gas-liquid separation efficiency and good effects of breaking bubbles, preventing overflow, exhausting and reducing pressure.)

1. A bubble breaking device for a cooking appliance, a pot cover of the cooking appliance having an exhaust passage, the bubble breaking device comprising:

a body which is suitable for being connected with the cooker cover, wherein the body is internally provided with a gas passing cavity which is suitable for being communicated with the exhaust channel and an open annular or closed annular bubble breaking flow channel which is externally wound around the gas passing cavity, the body is provided with a foam inlet hole which is communicated with the bubble breaking flow channel and the cooking cavity of the cooking utensil and an air inlet which is communicated with the bubble breaking flow channel and the gas passing cavity,

the gas-liquid mixture in the cooking cavity is suitable for entering the bubble breaking flow channel from the gas inlet hole and flowing along the circumferential direction of the bubble breaking flow channel so as to break bubbles and realize gas-liquid separation under the action of centrifugal force, and gas formed by gas-liquid separation is suitable for entering the gas passing cavity from the gas inlet.

2. The bubble breaking device for the cooking utensil as claimed in claim 1, wherein the bubble inlet hole is formed in the outer peripheral wall of the body and includes a plurality of holes spaced apart in the circumferential direction of the body, and the gas inlet hole is formed in the inner peripheral wall surface of the bubble breaking flow passage.

3. The bubble breaking device for the cooking appliance according to claim 1, wherein the bubble breaking flow channel extends along a circumferential arc of the body.

4. The bubble breaking device for the cooking appliance according to claim 1, wherein an inner wall surface of the bubble breaking flow passage is provided with a protruding bubble breaking rib.

5. The bubble breaking device for the cooking utensil according to claim 4, wherein the bubble breaking rib is provided on an inner peripheral wall surface of the bubble breaking flow passage and extends in an axial direction of the bubble breaking flow passage.

6. Bubble breaking device for a cooking appliance according to any one of claims 1 to 5, wherein said body comprises:

the mounting seat is connected with the pot cover, and the air outlet of the air passing cavity is arranged on the mounting seat;

the bubble breaking cover body is covered at the air outlet and matched with the mounting seat to form a cover cavity, and the bubble inlet hole is formed in the bubble breaking cover body;

the bubble breaking sealing piece extends into the cover cavity and divides the cover cavity into the bubble breaking flow channel and the air passing cavity, and the air inlet is formed in the peripheral wall of the bubble breaking sealing piece.

7. The bubble breaking device for the cooking utensil of claim 6, wherein the lower portion of the bubble breaking cover body is provided with a liquid discharge hole communicating the cooking cavity and the bubble breaking flow passage for discharging the liquid formed by gas-liquid separation out of the body.

8. The bubble breaking device for the cooking utensil as claimed in claim 7, wherein the liquid discharge hole comprises a plurality of holes spaced apart along the circumference of the body, the bottom of the bubble breaking seal is provided with a notch communicated with the bubble breaking flow channel, the bubble breaking cover and the bubble breaking seal can rotate relatively, when the bubble breaking cover and the bubble breaking seal are in any relative positions, the bottom of the bubble breaking seal covers at least one liquid discharge hole, and at least one liquid discharge hole corresponds to the notch to be communicated with the bubble breaking flow channel.

9. The bubble breaking device for the cooking utensil of claim 8, wherein the upper peripheral edge of the bubble breaking seal is connected with the peripheral edge of the air outlet, the inner peripheral wall of the bubble breaking cover body is provided with an annular positioning rib, the outer peripheral wall of the bubble breaking seal body is provided with at least one positioning boss extending along the circumferential direction of the bubble breaking seal body, and the positioning rib is supported on the positioning boss.

10. The bubble breaking device for the cooking utensil of claim 8, wherein the portion of the lower peripheral edge of the bubble breaking seal not provided with the notch is provided with an outwardly extending flange which abuts against the bottom wall of the bubble breaking cover and is adapted to shield at least a portion of the drain hole.

11. The bubble breaking device for the cooking utensil of any one of claims 7 to 10, wherein the outer peripheral surface of the lower portion of the bubble breaking seal is provided with a rib protruding outward and extending to a position right above the at least one liquid discharge hole to break bubbles of the gas-liquid mixture entering from the liquid discharge hole.

12. The bubble breaking device for the cooking appliance according to claim 6, wherein the outer circumferential surface of the bubble breaking seal is provided with an inwardly recessed groove constituting a part of the bubble breaking flow passage.

13. The bubble breaking device for the cooking utensil of claim 6, wherein the bubble breaking cover body and the bubble breaking sealing member are respectively detachably connected with the mounting seat, the mounting seat is a separate member connected with a cover plate or an inner cover of the pot cover, or the mounting seat is integrally formed on the inner cover or the cover plate of the pot cover.

14. The bubble breaking device for the cooking utensil of claim 6, wherein the lid is provided with an exhaust valve device, the exhaust valve device is internally defined with an exhaust valve channel, the exhaust valve channel forms at least one part of the exhaust channel, the lower part of the exhaust valve device extends into the air passing cavity from the air outlet of the air passing cavity, and the inner circumferential surface of the bubble breaking sealing member is provided with an annular sealing part which is abutted against the outer circumferential surface of the exhaust valve device.

15. The bubble breaking device for the cooking utensil of claim 14, wherein an upper portion of the bubble breaking seal is engaged with a peripheral edge of the air outlet port of the air passing chamber, an outer protrusion is provided on an outer peripheral surface of a lower portion of the air outlet valve means, and a flange protruding inward and located above the outer protrusion is provided on an inner peripheral surface of an upper portion of the bubble breaking seal to stop the outer protrusion from moving upward from an upper side.

16. A lid for a cooking appliance, characterized in that it comprises a bubble breaking device for a cooking appliance according to any one of claims 1 to 15.

17. A cooking appliance comprising the pot cover for a cooking appliance according to claim 16.

Technical Field

The invention relates to the technical field of cooking appliances, in particular to a bubble breaking device for a cooking appliance, a pot cover for the cooking appliance with the bubble breaking device for the cooking appliance and the cooking appliance with the pot cover for the cooking appliance.

Background

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the bubble breaking device for the cooking utensil, which has the advantages of high gas-liquid separation efficiency, good bubble breaking and overflow preventing and exhaust pressure reducing effects and the like.

The invention also provides a pot cover for a cooking appliance, which is provided with the bubble breaking device for the cooking appliance.

The invention also provides a cooking appliance with the pot cover for the cooking appliance.

According to an embodiment of the first aspect of the present invention, the bubble breaking device for a cooking appliance, a pot cover of the cooking appliance having an exhaust passage, is characterized in that the bubble breaking device comprises: the cooker cover comprises a body which is suitable for being connected with the cooker cover, wherein the body is internally provided with an air passing cavity which is suitable for being communicated with the exhaust channel and an open annular or closed annular bubble breaking channel which is externally wound around the air passing cavity, the body is provided with a bubble inlet hole which is communicated with the bubble breaking channel and a cooking cavity of a cooking utensil and an air inlet which is communicated with the bubble breaking channel and the air passing cavity, a gas-liquid mixture in the cooking cavity is suitable for entering the bubble breaking channel from the bubble inlet hole and flowing along the circumferential direction of the bubble breaking channel so as to break bubbles under the action of centrifugal force and realize gas-liquid separation, and gas formed by gas-liquid separation is suitable for entering the air passing cavity from the air inlet hole.

According to the bubble breaking device for the cooking utensil, bubbles are broken and gas-liquid separated through centrifugal motion, so that liquid subjected to gas-liquid separation flows back to the cooking cavity, and gas is discharged out of the cooking cavity.

In addition, the bubble breaking device for the cooking utensil according to the embodiment of the invention also has the following additional technical characteristics:

according to some embodiments of the invention, the bubble inlet hole is formed in the outer peripheral wall of the body and includes a plurality of holes spaced apart along the circumferential direction of the body, and the gas inlet hole is formed in the inner peripheral wall surface of the bubble breaking flow passage.

According to some embodiments of the invention, the bubble-breaking flow channel extends along a circumferential arc of the body.

According to some embodiments of the invention, the inner wall surface of the bubble breaking flow passage is provided with a protruding bubble breaking rib.

Furthermore, the bubble breaking ribs are arranged on the inner peripheral wall surface of the bubble breaking flow channel and extend along the axial direction of the bubble breaking flow channel.

According to some embodiments of the invention, the body comprises: the mounting seat is connected with the pot cover, and the air outlet of the air passing cavity is arranged on the mounting seat; the bubble breaking cover body is covered at the air outlet and matched with the mounting seat to form a cover cavity, and the bubble inlet hole is formed in the bubble breaking cover body; the bubble breaking sealing piece extends into the cover cavity and divides the cover cavity into the bubble breaking flow channel and the air passing cavity, and the air inlet is formed in the peripheral wall of the bubble breaking sealing piece.

In some embodiments of the invention, the lower part of the bubble breaking cover body is provided with a liquid discharge hole communicating the cooking cavity and the bubble breaking flow channel, so as to discharge liquid formed by gas-liquid separation out of the body.

Furthermore, the liquid discharge holes comprise a plurality of notches which are arranged along the circumferential direction of the body at intervals, recesses communicated with the bubble breaking flow channel are formed in the bottom of the bubble breaking sealing piece, the bubble breaking cover body and the bubble breaking sealing piece can rotate relatively, when the bubble breaking cover body and the bubble breaking sealing piece are located at any relative position, at least one liquid discharge hole is covered and sealed by the bottom of the bubble breaking sealing piece, and the at least one liquid discharge hole corresponds to the recesses so as to be communicated with the bubble breaking flow channel.

Optionally, the last week of broken bubble sealing member along with the week of gas outlet is continuous, the internal perisporium of broken bubble cover body is equipped with annular location protruding muscle just the periphery wall of broken bubble sealing member is equipped with along its circumference extension at least one location boss, the location protruding muscle support in location boss.

Optionally, a portion of the lower peripheral edge of the bubble breaking sealing element, where the recess is not formed, is provided with a flange extending outward, and the flange abuts against the bottom wall of the bubble breaking cover body and is adapted to shield at least a portion of the liquid discharge hole.

In some embodiments of the invention, the outer peripheral surface of the lower part of the bubble-breaking seal is provided with a blocking rib which protrudes outwards and extends to a position right above the at least one liquid discharge hole so as to break bubbles of the gas-liquid mixture entering from the liquid discharge hole.

Optionally, the outer circumferential surface of the bubble-breaking seal is provided with an inwardly recessed groove, and the groove forms a part of the bubble-breaking flow channel.

Advantageously, the bubble breaking cover body and the bubble breaking sealing element are respectively detachably connected with the mounting seat, the mounting seat is a separate part connected with the cover plate or the inner cover of the pot cover, or the mounting seat is integrally formed on the inner cover or the cover plate of the pot cover.

In some embodiments of the present invention, the pot cover is provided with an exhaust valve device, an exhaust valve passage is defined in the exhaust valve device, the exhaust valve passage forms at least a part of the exhaust passage, the lower part of the exhaust valve device extends into the air passing cavity from the air outlet of the air passing cavity, and the inner circumferential surface of the bubble breaking sealing member is provided with an annular sealing part which is abutted against the outer circumferential surface of the exhaust valve device.

Furthermore, the upper part of the bubble breaking sealing element is clamped with the peripheral edge of the air outlet of the air passing cavity, an outer bulge is arranged on the peripheral surface of the lower part of the exhaust valve device, and a flange which protrudes inwards and is positioned above the outer bulge is arranged on the inner peripheral surface of the upper part of the bubble breaking sealing element so as to stop the outer bulge from moving upwards from the upper side.

The pot cover for the cooking appliance according to the second aspect embodiment of the invention comprises the bubble breaking device for the cooking appliance according to the first aspect embodiment of the invention.

According to the pot cover for the cooking utensil provided by the embodiment of the invention, the bubble breaking device for the cooking utensil is utilized, the gas-liquid separation efficiency is high, and the effects of bubble breaking, overflow prevention, air exhaust and pressure reduction are good.

The cooking appliance according to the third aspect embodiment of the invention comprises the pot cover for the cooking appliance according to the second aspect embodiment of the invention.

According to the cooking utensil provided by the embodiment of the invention, the pot cover for the cooking utensil is utilized, the gas-liquid separation efficiency is high, and the effects of bubble breaking, overflow prevention, air exhaust and pressure reduction are good, so that the cooking utensil is convenient to use, safe and reliable, and good in user experience.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is an exploded view of a bubble breaking device for a cooking appliance according to an embodiment of the present invention;

fig. 2 is a partial structural schematic view of a bubble breaking device for a cooking appliance according to an embodiment of the present invention;

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

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

fig. 5 is a perspective view of a bubble-breaking cover of a bubble-breaking device for a cooking appliance according to an embodiment of the present invention;

fig. 6 is a perspective view of a bubble breaking seal of a bubble breaking device for a cooking appliance according to an embodiment of the present invention;

fig. 7 is a perspective view of a bubble breaking seal of a bubble breaking device for a cooking appliance according to an embodiment of the present invention.

Reference numerals:

a bubble breaking device 10 for a cooking appliance,

a mounting seat 100, an air outlet 101, a first indent 102,

a bubble-breaking cover body 210, a foam inlet hole 211, a liquid discharge hole 212, a positioning convex rib 213, a holding groove 214,

a bubble-breaking sealing element 220, a gas passing cavity 221, a bubble-breaking flow passage 222, a notch 223, a gas inlet 224, a bubble-breaking rib 225, a flange 226, a positioning boss 227, a blocking rib 228, a sealing part 229, a sealing ring groove 230, a sealing flange 231,

an exhaust passage 20.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A bubble breaking device 10 for a cooking appliance according to an embodiment of the first aspect of the present invention is described below with reference to the accompanying drawings. For example, the cooking appliance is an electric pressure cooker.

As shown in fig. 1 to 7, according to the bubble breaking device 10 for the cooking appliance of the embodiment of the present invention, the lid of the cooking appliance has the air discharge passage 20, and the bubble breaking device 10 includes a body adapted to be connected to the lid.

Specifically, the body is provided with an air passing cavity 221 and a bubble breaking flow channel 222, the air passing cavity 221 is suitable for being communicated with the exhaust channel 20, and the bubble breaking flow channel 222 is externally wound around the air passing cavity 221 and is configured into an open ring shape or a closed ring shape. The body is provided with a foam inlet hole 211 and a gas inlet 224, the foam inlet hole 211 is communicated with the foam breaking flow channel 222 and a cooking cavity of the cooking appliance, and the gas inlet 224 is communicated with the foam breaking flow channel 222 and the gas passing cavity 221.

Wherein, the gas-liquid mixture (i.e. bubbles) in the cooking cavity is suitable for entering the bubble breaking flow channel 222 from the gas inlet hole 211, and the gas-liquid mixture flows along the circumferential direction of the bubble breaking flow channel 222 to break bubbles and realize gas-liquid separation under the action of centrifugal force, and the gas formed by gas-liquid separation is suitable for entering the gas passing cavity 221 from the gas inlet 224.

Thus, during the exhaust and pressure reduction of the cooking fluid food, a large amount of bubbles are generated in the cooking cavity, and the bubbles are continuously accumulated and enter the body from the inlet holes 211 respectively. Next, the bubbles entering from the bubble inlet hole 211 flow at a high speed under the guidance of the bubble breaking flow path 222: because the bubble is composed of the gas inside and the liquid wrapped outside the gas, and the gas and the liquid have different densities, when the liquid and the gas flow together in a mixed mode, the centrifugal force applied to the liquid is larger than that applied to the gas, and therefore the bubble can be broken and gas-liquid separation can occur. The separated liquid will adhere to the body and collect together under the action of gravity, and the separated gas will exit the bubble breaking device 10 through the air exit passage 20, from where the liquid exits to the cooking chamber.

According to the bubble breaking device 10 for the cooking utensil provided by the embodiment of the invention, bubbles are broken and gas-liquid separated by centrifugal motion, so that gas-liquid separated liquid flows back to the cooking cavity and gas is discharged from the cooking cavity, and high gas-liquid separation efficiency, good bubble breaking and anti-overflow effects and exhaust and depressurization effects are realized with a simple structure and low cost. Therefore, food overflow and kitchen pollution are avoided, the body can be detached for cleaning, and liquid residue is avoided to pollute food. In addition, the user can not be scalded, and the device is safe and reliable.

According to some embodiments of the present invention, as shown in fig. 1 to 6, the bubble inlet hole 211 is provided in the outer circumferential wall of the body, the bubble inlet hole 211 includes a plurality of holes spaced apart along the circumferential direction of the body, and the gas inlet 224 is provided in the inner circumferential wall surface of the bubble breaking flow passage 222. Therefore, the air bubbles in the cooking cavity can enter the body from the most directions, and the structure is simpler. For example, the inlet hole 211 extends in the axial direction of the body.

According to some embodiments of the present invention, as shown in fig. 6 and 7, the bubble breaking flow channel 222 extends along the circumferential arc of the body, so that the bubble breaking flow channel 222 can better guide the bubbles to perform centrifugal motion along the circumferential direction of the body, thereby achieving better centrifugal separation effect.

According to some embodiments of the present invention, as shown in fig. 1 to 7, the inner wall surface of the bubble-breaking flow channel 222 is provided with a protruding bubble-breaking rib 225, and the number of the bubble-breaking ribs 225 may be one or more. For example, a plurality of bubble breaking ribs 225 are arranged along the circumferential direction of the bubble breaking flow channel 222 at intervals, wherein at least one bubble breaking rib 225 protrudes toward the bubble inlet hole 211 in the radial direction of the body, so as to directly break bubbles entering from the bubble inlet hole 211, and enhance the gas-liquid separation effect.

Further, as shown in fig. 6 and 7, the bubble breaking ribs 225 are provided on the inner peripheral wall surface of the bubble breaking flow passage 222, and the bubble breaking ribs 225 extend in the axial direction of the bubble breaking flow passage 222 (i.e., in the width direction of the bubble breaking flow passage 222), so that the bubble breaking effect is further improved.

According to some embodiments of the invention, as shown in fig. 1-7, the body comprises: a mounting 100, a bubble-breaking enclosure 210, and a bubble-breaking seal 220. The mounting base 100 is connected to the lid. The air outlet 101 of the air passing chamber 221 is provided in the mounting seat 100. The bubble breaking cover body 210 covers the air outlet 101, a cover cavity is formed by the bubble breaking cover body 210 and the mounting base 100 in a matching mode, and the air inlet hole 211 is formed in the bubble breaking cover body 210. The bubble-breaking sealing member 220 extends into the housing cavity, the bubble-breaking sealing member 220 divides the housing cavity into a bubble-breaking flow passage 222 and a gas passing cavity 221, and the gas inlet 224 is arranged on the peripheral wall of the bubble-breaking sealing member 220. Wherein, the bubble-breaking sealing member 220 is detachably engaged with the air outlet 101 and the exhaust passage 20, respectively, and seals the gap between the mounting seat 100 and the exhaust passage 20.

In the process of exhausting and depressurizing the cooking fluid food, the bubble breaking flow channel 222 guides the bubbles entering from the bubble inlet hole 211 to flow at a high speed, the bubbles can be broken, gas and liquid separation can be carried out, the separated liquid can be attached to the side walls of the bubble breaking cover body 210 and the bubble breaking sealing piece 220 and can be converged together under the action of gravity, and the separated gas is discharged out of the bubble breaking device 10 through the exhaust channel 20.

In some embodiments of the present invention, as shown in fig. 1-3, the bubble breaking cover 210 has a liquid outlet hole 212 at the lower part, and the liquid outlet hole 212 communicates the cooking cavity with the bubble breaking flow channel 222 to discharge the liquid formed by gas-liquid separation out of the body.

Further, as shown in fig. 1 to 3 and 5, the drain hole 212 includes a plurality of holes provided at intervals in the circumferential direction of the body, for example, the drain hole 212 extends in the circumferential direction of the body. The bubble-breaking cover 210 and the bubble-breaking seal 220 may rotate relative to each other to facilitate assembly. The bottom of the bubble breaking sealing element 220 is provided with a notch 223, the notch 223 is communicated with the bubble breaking flow channel 222, when the bubble breaking cover body 210 and the bubble breaking sealing element 220 are at any relative positions, the bottom of the bubble breaking sealing element 220 covers and seals at least one liquid discharge hole 212, and the at least one liquid discharge hole 212 corresponds to the notch 223 in position to be communicated with the bubble breaking flow channel 222. In this way, the number of bubbles entering the body from the liquid discharge hole 212 can be reduced, bubble breaking efficiency can be ensured, and discharge of liquid can be promoted.

For example, the drainage holes 212 extend in the circumferential direction of the bubble breaking enclosure 210, and the recesses 223 are arc-shaped extending in the circumferential direction of the bubble breaking seal 220, so that the drainage of the recesses 223 is better and the liquid can be drained from the plurality of drainage holes 212 more quickly.

Alternatively, as shown in fig. 3, the upper peripheral edge of the bubble-breaking seal 220 is connected to the peripheral edge of the air outlet 101, the inner peripheral wall of the bubble-breaking cover 210 is provided with an annular positioning rib 213, the outer peripheral wall of the bubble-breaking seal 220 is provided with at least one positioning boss 227, the positioning boss 227 extends along the circumferential direction of the bubble-breaking seal 220, and the positioning rib 213 is supported by the positioning boss 227, so that the bubble-breaking cover 210 is firmly supported by the bubble-breaking seal 220. For example, the positioning boss 227 is plural, and the plural positioning bosses 227 are provided at intervals along the circumferential direction of the bubble-breaking seal 220.

Alternatively, as shown in fig. 6 and 7, the portion of the lower peripheral edge of the bubble-breaking seal 220, which is not provided with the notch 223, is provided with an outwardly extending flange 226, i.e., the flange 226 and the notch 223 are arranged offset in the circumferential direction of the bubble-breaking seal 220. The flange 226 abuts against the bottom wall of the foam breaking cover body 210 and is suitable for shielding at least a part of the liquid discharge hole 212, so that bubbles can be prevented from entering the foam breaking cover body 210 from the liquid discharge hole 212, and the gas-liquid separation effect is prevented from being influenced by the fact that the bubbles directly enter the gas passing cavity 221 from the gas inlet 224. For example, the bead 226 extends circumferentially of the bubble-breaching seal 220, and the bead 226 is located below the air inlet 224.

In some embodiments of the present invention, as shown in fig. 7, the bubble-breaking seal 220 has a rib 228 on the lower outer periphery thereof, and the rib 228 protrudes outward and extends to a position right above the at least one drainage hole 212, so that bubbles entering the bubble-breaking cover 210 from the drainage hole 212 can be broken by the rib 228 during air exhaust. Wherein the rib 228 is located above the flange 226.

Advantageously, as shown in fig. 3, the lower end of the bubble-breaking seal 220 is open, the bottom wall portion of the bubble-breaking cover body 210 protrudes upward to form a receiving groove 214, the top wall of the receiving groove 214 blocks the lower end of the bubble-breaking seal 220, and the drain hole 212 is formed in the remaining portion of the bottom wall of the bubble-breaking cover body 210. Thus, the efficiency of discharging the liquid can be ensured, and the accumulation of the liquid in the bubble-breaking cover body 210 can be further prevented.

Alternatively, as shown in fig. 1, 3, 6 and 7, the outer circumferential surface of the bubble-breaking seal 220 is provided with an inwardly recessed groove which forms a part of the bubble-breaking flow passage 222, so that the structure is relatively simple and the centrifugal separation effect is good.

In some embodiments of the present invention, as shown in fig. 6 and 7, the bubble-breaking channel 222 is located above the recess 223 and the air inlet 224 penetrates through the lower wall of the bubble-breaking channel 222. Therefore, the device is beneficial to smooth discharge of liquid, has good gas-liquid separation effect and is compact in structure.

Advantageously, the blister pack 210 and the blister seal 220 are removably attached to the mounting base 100, respectively, to facilitate cleaning by the user. Wherein, the mounting base 100 is a separate component connected with the cover plate or the inner cover of the pot cover, or the mounting base 100 is integrally formed on the inner cover or the cover plate of the pot cover.

In some embodiments of the present invention, the pot cover is provided with an exhaust valve device, the exhaust valve device defines an exhaust valve channel therein, the exhaust valve channel forms at least a portion of the exhaust passage 20, a lower portion of the exhaust valve device extends from the air outlet 101 of the air passing cavity 221 into the air passing cavity 221, an inner circumferential surface of the bubble breaking seal 220 is provided with an annular sealing portion 229, and the sealing portion 229 abuts against an outer circumferential surface of the exhaust valve device. For example, the sealing portion 229 extends downward from the top wall of the air passing chamber 221, and the axial section of the lower end of the sealing portion 229 extends obliquely inward from the top to the bottom and in the radial direction of the bubble breaking seal 220.

Further, the upper portion of the bubble-breaking sealing element 220 is clamped with the peripheral edge of the air outlet 101 of the air passing cavity 221, the outer peripheral surface of the lower portion of the exhaust valve device is provided with an outer protrusion, the inner peripheral surface of the upper portion of the bubble-breaking sealing element 220 is provided with a flange, and the flange protrudes inwards and is located above the outer protrusion so as to be moved outwards and upwards out of the upper side stop.

According to some embodiments of the present invention, as shown in fig. 3 and 5-7, the inner circumferential wall of the bubble-breaking cover 210 is provided with an annular positioning rib 213 and the outer circumferential wall of the bubble-breaking seal 220 is provided with at least one positioning boss 227 extending along the circumferential direction thereof, and the positioning rib 213 is supported on the positioning boss 227, so that the bubble-breaking cover 210 is firmly supported on the bubble-breaking seal 220. For example, the positioning boss 227 is plural, and the plural positioning bosses 227 are provided at intervals along the circumferential direction of the bubble-breaking seal 220.

According to some embodiments of the present invention, as shown in fig. 3, the outer peripheral wall of the upper end of the bubble-breaking seal 220 is provided with a sealing ring groove 230, the upper peripheral edge of the bubble-breaking seal 220 is provided with a sealing flange 231 extending into the sealing ring groove 230, the mounting seat 100 is provided with a first indent 102, the first indent 102 is engaged with the sealing flange 231 and the first indent 102 is engaged in the sealing ring groove 230.

A pot cover for a cooking appliance according to an embodiment of a second aspect of the present invention includes: the bubble breaking device 10 and the exhaust valve device for the cooking appliance according to the embodiment of the first aspect of the present invention. For example, the cooking appliance is an electric pressure cooker.

Specifically, the bubble breaking device 10 is detachably mounted on the inner side surface of the pot cover assembly. The exhaust valve device is installed to the lid assembly and has an exhaust valve passage for forming the exhaust passage 20.

According to the pot cover for the cooking utensil provided by the embodiment of the invention, by using the bubble breaking device 10 for the cooking utensil, the gas-liquid separation efficiency is high, and the effects of bubble breaking, overflow prevention, exhaust and pressure reduction are good.

For example, the exhaust valve device may include: the exhaust valve core, the hanger shaft and the sealing element. The exhaust valve core is connected with the hanging shaft through a sealing piece, a valve core channel is arranged in the exhaust valve core, a hanging shaft channel is arranged in the hanging shaft, and the hanging shaft channel is communicated with the valve core channel to form an exhaust valve channel.

A cooking appliance according to an embodiment of a third aspect of the present invention includes: according to the pot cover and the pot body for the cooking utensil in the embodiment of the second aspect of the invention, the pot cover is arranged on the pot body, and the pot cover and the pot body define the cooking cavity. For example, the cooking appliance is an electric pressure cooker.

According to the cooking utensil provided by the embodiment of the invention, the pot cover for the cooking utensil is utilized, the gas-liquid separation efficiency is high, and the effects of bubble breaking, overflow prevention, air exhaust and pressure reduction are good, so that the cooking utensil is convenient to use, safe and reliable, and good in user experience.

Other constructions and operations of the cooking appliance according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "width," "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "a specific embodiment," "an example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.