Jet type foam breaker and cooking utensil

Abstract

A jet-type bubble breaker and a cooking utensil, comprising a shell, and a steam inlet portion and a steam outlet portion connected to the shell, wherein an intermediate storage chamber is arranged in the shell, and the intermediate storage chamber is connected to an external space outside the shell through a cold air inlet channel arranged on the shell; the characteristic is that a steam inlet channel is arranged in the steam inlet portion, a steam outlet of the steam inlet channel is connected to the intermediate storage chamber, a horizontal height of the steam outlet of the steam inlet channel is higher than a horizontal height of a bottom wall of the intermediate storage chamber, the steam inlet channel is tapered, i.e., its cross-sectional size gradually decreases along the steam flow direction, and the steam inlet channel is used to form a jet flow; the steam outlet of the steam inlet channel is close to the steam inlet of the steam outlet channel so as to be able to receive at least part of the jet flow ejected by the steam inlet channel, and the steam outlet channel releases at least part of the water vapor in the jet flow outwardly.

Description

Technical Field

[0001] The present invention relates to a bubble breaker used in the field of cooking utensils, and in particular to a jet bubble breaker; the present invention also relates to a cooking utensil using the jet bubble breaker. The bubble breaker is used to break the bubbles generated during the operation of the cooking utensil to prevent them from flowing out. Background Art

[0002] At present, most of the bubble breakers used in electric rice cookers on the market are provided with multiple bubble breaking walls in the internal cavity of the bubble breakers to perform mechanical bubble breaking, such as the Chinese invention patent with the announcement number CN107951398B. With the upgrading of products, there is now a method of achieving the effect of condensation bubble breaking by inhaling external air through a negative pressure generator, such as the Chinese utility model patent with the announcement number CN203369771U, which discloses an electric rice cooker, including a cooker body; a cooker cover, the cooker cover is used to cover the cooker body to define a cooking cavity with the cooker body, and the cooker cover has a steam channel; a negative pressure generator, the negative pressure generator is provided on the cooker cover, and is used to generate a defoaming area in at least one of the cooking cavity and the steam channel; and a driver, the driver is provided in the cooker cover and drives the negative pressure generator to rotate through a belt drive. This disclosed electric rice cooker promotes the breaking of foam and greatly reduces the overflow of foam by using a negative pressure generator to generate a local negative pressure in at least one of the cooking cavity and the steam channel, thereby the reliability and safety of the electric rice cooker are high.

[0003] Although the Chinese utility model patent with the announcement number CN203369771U can achieve the effect of condensation and bubble breaking, it needs to be equipped with a complex negative pressure generator and driver, which not only brings about the problems of complicated disassembly and assembly, large space occupancy rate, but also greatly increases the cost of the bubble breaker. In addition, the Chinese invention patent with the publication number CN107242801A also discloses a bubble breaker for condensation and bubble breaking, which achieves the effect of condensation and bubble breaking by inhaling cold air through a double impeller. Although no driver is required, the double impeller bubble breaker also has the problems of complicated disassembly and assembly, large space occupancy rate, and greatly increased cost. In addition, due to the complex structure of the impeller, the residual starch solids on it are not easy to clean. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a jet-type bubble breaker to solve the problem of complex structure and high cost of the bubble breaker in the prior art that absorbs cold air to achieve condensation and bubble breaking.

[0005] In order to solve the above technical problems, the present invention proposes a jet-type bubble breaker, comprising a shell, and a steam inlet portion and a steam outlet portion connected to the shell, wherein an intermediate storage chamber is arranged in the shell, and the intermediate storage chamber is connected to the external space outside the shell through a cold air inlet channel arranged on the shell; characterized in that:

[0006] The steam introduction part is provided with a steam introduction channel, a steam outlet of the steam introduction channel is connected to the intermediate storage chamber, the steam outlet of the steam introduction channel is higher than the bottom wall of the intermediate storage chamber, the steam introduction channel is tapered, that is, its cross-sectional size gradually decreases along the steam flow direction, and the steam introduction channel is used to form a jet flow;

[0007] The steam outlet portion is provided with a steam outlet channel, a steam inlet of the steam outlet channel is connected to the intermediate storage chamber, and a level of the steam inlet of the steam outlet channel is higher than a level of a bottom wall of the intermediate storage chamber;

[0008] The steam outlet of the steam introduction channel is close to the steam inlet of the steam outlet channel so as to receive at least part of the jet flow ejected by the steam introduction channel, and the steam outlet channel releases at least part of the water vapor in the jet flow outwardly;

[0009] A negative pressure gap is reserved between the outlet of the steam inlet portion and the inlet of the steam outlet portion, and the negative pressure gap is used to automatically introduce the cold air entering the intermediate storage chamber through the cold air inlet channel into the steam outlet channel to assist in bubble breaking by means of the relative low pressure formed by the jet flow, and the negative pressure gap is also used to allow the unevaporated bubble juice in the steam outlet channel to at least partially flow back into the intermediate storage chamber, and the intermediate storage chamber is used to collect the unevaporated bubble juice.

[0010] The jet-type bubble breaker is mainly used in cooking utensils such as rice cookers, and is used to attenuate or break bubbles generated by the cooking utensils during cooking, thereby reducing the risk of overflow of the cooked food during cooking. During operation, the high-temperature steam generated in the cooking space of the rice cooker enters the bubble breaker through the steam introduction channel, and the water vapor in the high-temperature steam is discharged through the steam outlet channel after the bubbles are broken by the bubble breaker.

[0011] The steam inlet and steam outlet may be integrally formed with the shell, i.e., form a part of the shell, for example, the steam inlet is integrally formed with the lower shell described below, and the steam outlet is integrally formed with the upper shell described below, or both the steam inlet and steam outlet are integrally formed with the upper shell or the lower shell; or may be a structure independent of the shell and mechanically connected to the shell. Regardless of how the steam inlet and steam outlet are arranged, it does not hinder the purpose of the present invention, such as not hindering the formation of the negative pressure gap.

[0012] The steam inlet and steam outlet can be extended into the intermediate storage chamber in whole or in part. In the layout direction, the steam inlet and steam outlet can be arranged in pairs in the vertical direction, or in pairs in the left-right direction or in a direction at a certain angle to the horizontal direction. In the scheme of arranging in the left-right direction or in a direction at a certain angle to the horizontal direction, the steam inlet or the steam outlet does not need to extend into the intermediate storage chamber, as long as the lower edge of the steam outlet of the steam inlet channel and the steam inlet of the steam outlet channel is higher than the bottom wall of the intermediate storage chamber; in the scheme of arranging in the vertical direction, if the steam inlet is located below the steam outlet, the steam inlet needs to extend into the intermediate storage chamber to ensure that the steam outlet of the steam inlet channel is higher than the bottom wall of the intermediate storage chamber.

[0013] Among them, the steam introduction channel is conical and its cross-sectional size gradually decreases along the steam flow direction, which defines the layout shape of the steam introduction channel. When the steam enters the bubble breaker from the steam inlet of the steam introduction channel through the steam outlet, the steam can be gradually accelerated to form a beam-like jet flow, and the first bubble breaking structure is formed in this process.

[0014] Among them, the outlet of the steam inlet part refers to the end portion corresponding to the side where the steam outlet of the steam inlet channel is located, and the inlet of the steam outlet part refers to the end portion corresponding to the side where the steam inlet of the steam outlet channel is located. From the perspective of physical space layout, an axial gap, i.e., the negative pressure gap, can be formed between the outlet of the steam inlet part and the inlet of the steam outlet part in the direction of steam flow; or, the outlet of the steam inlet part can be extended into the steam outlet channel, but the radial dimension of the outlet of the steam inlet part in the radial direction is slightly smaller than the dimension of the corresponding position of the steam outlet channel, thereby forming a radial gap, i.e., the negative pressure gap. Of course, from the perspective of structural arrangement, in the above-mentioned structure for forming negative pressure, a connecting rib for connecting and positioning can be provided between the outlet of the steam inlet part and the inlet of the steam outlet part, which is also a feasible solution.

[0015] Among them, the horizontal height of the steam outlet of the steam inlet channel and the horizontal height of the steam inlet of the steam outlet channel are both higher than the horizontal height of the bottom wall of the intermediate storage cavity, so as to ensure that the intermediate storage cavity has a certain ability to store liquid, so that the stored liquid in the intermediate storage cavity will not easily flow back into the cooking pot from the steam outlet of the steam inlet channel, or will not easily flow out of the pot cover from the steam inlet of the steam outlet channel.

[0016] In a specific application, the jet-type foam breaker can be a structure independent of the cooking utensil and installed on the pot cover of the cooking utensil when in use; alternatively, the jet-type foam breaker is formed by directly combining the pot cover of the cooking utensil. For example, when the cooking utensil is an electric rice cooker, the pot cover of the electric rice cooker is generally a double-layer structure including a middle cover and an outer cover, or a three-layer structure including an inner cover, a middle cover, and an outer cover. In this case, the shell, such as the upper shell and the lower shell described below, are directly formed by the middle cover and the outer cover of the pot cover, respectively, that is, the upper shell and the outer cover are integrally formed, and the lower shell and the middle cover are integrally formed.

[0017] According to the above technical solution, compared with the prior art, the beneficial effects of the present invention are mainly:

[0018] 1. Since the steam introduction channel is conical, the jet flow can be gathered, the jet flow velocity can be increased, the formation of bubbles can be reduced, and the bubbles can be broken to form the first bubble breaking structure. In addition, the relatively low pressure formed by the jet flow can be used to automatically introduce the cold air entering the intermediate storage cavity through the cold air introduction channel into the steam outlet channel, and the cold air will meet the jet flow to achieve the effect of condensation and bubble breaking;

[0019] 2. At least part of the bubble juice formed by condensation and bubble breaking will flow downward along the wall of the steam outlet channel and flow back into the intermediate storage chamber through the negative pressure gap, which can greatly reduce the bubble juice directly flowing back from the steam inlet channel, thereby reducing the weakening of the jet power of the jet flow by the backflowing bubble juice;

[0020] 3. The intermediate storage chamber is used to receive and store the condensed and bubble-broken liquid to prevent backflow;

[0021] 4. There is no need to configure additional components such as fan blades and drivers with complex structures, which can greatly reduce costs.

[0022] A further technical solution may be that at least part of the steam introduction part extends into the intermediate storage chamber. As an equivalent solution, the steam introduction part may also be arranged on the side of the intermediate storage chamber, for example, forming a left-right arrangement structure.

[0023] A further technical solution may be that at least part of the steam outlet extends into the intermediate storage chamber. As an equivalent solution, the steam outlet may also be arranged on the side of the intermediate storage chamber, for example, forming a left-right arrangement structure.

[0024] In order to improve the effect of bubble breaking, a further technical solution may be that a top cover plate covering the outlet of the steam outlet channel is provided on the outlet portion of the steam outlet portion, and spurs are provided on the inner side of the top cover plate, and the top cover plate does not hinder the steam in the steam outlet channel from overflowing outwards. Wherein, the top cover plate does not hinder the steam in the steam outlet channel from overflowing outwards, which means that a through hole can be provided on the top cover plate for the steam to overflow outwards, and a flow gap can be reserved between the top cover plate and the steam outlet portion for the steam to overflow outwards. Wherein, the top cover plate and the spurs provided on the top cover plate can play a further bubble breaking function. In addition, the top cover plate can also slow down the speed of steam discharge in the steam outlet channel, so that the cold air and high-temperature steam can be more fully mixed, further improving the effect of condensation and bubble breaking.

[0025] A further technical solution may be that, in the projection viewed from top to bottom, the steam outlet of the steam inlet channel is located within the range defined by the steam inlet of the steam outlet channel so that the jet flow can be concentratedly sprayed toward the steam outlet channel. In this way, almost all the steam entering from the steam inlet channel is concentrated into the steam outlet channel, which will not affect the power of the jet flow due to the dispersion of the steam, and can also fully mix the high-temperature steam and the cold air in the steam outlet channel.

[0026] A further technical solution may be that the inner diameter of the steam outlet channel is much larger than the inner diameter of the steam outlet of the steam inlet channel so that the steam jet forms a collapse effect when entering the steam outlet channel.

[0027] A further technical solution may be that the shell includes an upper shell and a lower shell arranged up and down, the upper shell and the lower shell are sealed and connected to form the intermediate storage chamber between the upper shell and the lower shell, the steam outlet is connected to the upper shell, the cold air inlet channel is arranged on the upper shell, the steam inlet is connected to the lower shell, and a drainage channel is also arranged on the bottom wall of the lower shell. The present invention arranges the cold air inlet channel on the upper shell at a relatively upper position, which can reduce the effect of the heat generated by cooking on the cold air, wherein the cold air inlet channel can be arranged on the top wall of the upper shell, and can also be arranged on the side wall of the upper shell. In addition, the drainage channel can discharge the bubble juice generated by bubble breaking.

[0028] As an equivalent solution, the steam inlet portion and the steam outlet portion may also be arranged integrally on the upper shell, or integrally arranged on the lower shell.

[0029] A further technical solution may also include a reflux valve plate movably arranged on the bottom wall of the intermediate storage chamber, the reflux valve plate including a cover plate portion, the cover plate portion being located below the bottom wall of the intermediate storage chamber, a drainage channel being provided on the bottom wall of the intermediate storage chamber, the drainage channel being located directly above the reflux valve plate; when the cover plate portion is in a free hanging state, there is a gap between the cover plate portion and the bottom wall of the intermediate storage chamber so as to release the liquid in the intermediate storage chamber, and when the cover plate portion is pushed upward by the steam below it to abut against the bottom wall of the intermediate storage chamber, the cover plate portion closes the drainage channel.

[0030] When a large number of bubbles are formed in the pot, the cover plate is pushed upward by the bubbles to close the drainage channel, so that the space in the pot and the various channels in the bubble breaker cannot be connected through the drainage channel to affect the air flow in the bubble breaker; and when the bubbles in the pot decrease, the cover plate will move downward under the action of gravity to open the drainage channel, so that the juice in the intermediate storage cavity can flow back directly into the pot, thereby preventing the juice from accumulating in the intermediate storage cavity and breeding bacteria or even hindering the normal operation of the bubble breaker. Of course, the bubble breaker of the present invention may not be provided with the structure for juice reflux here.

[0031] In order to position the reflux valve plate, a further technical solution may be that the reflux valve plate also includes a rod body portion connected to the cover plate portion, the reflux valve plate is T-shaped as a whole, and the reflux valve plate is movably connected to the bottom wall of the intermediate storage chamber through the rod body portion.

[0032] Accordingly, the present invention also provides a cooking utensil, comprising a cooking pot and a pot cover capable of covering the cooking pot, characterized in that it also comprises a jet bubble breaker according to any one of claims 1 to 9, wherein the jet bubble breaker is arranged on the pot cover. The jet bubble breaker may be a structure independent of the pot cover, or may be directly formed by the cover plate of the pot cover.

[0033] Since the present invention has the above characteristics and advantages, it can be used in jet-type bubble breakers and cooking utensils.

[0034] Instruction Manual

[0035] Figure 1 It is a structural schematic diagram of the jet type bubble breaker of the present invention;

[0036] Figure 2is a cross-sectional view of the jet-type bubble breaker of the present invention;

[0037] Figure 3 Schematic diagram of air flow of the jet-type bubble breaker of the present invention;

[0038] Figure 4 1. It is an exploded schematic diagram of the jet-type bubble breaker of the present invention;

[0039] Figure 5 It is a cross-sectional view of a jet bubble breaker equipped with a top cover plate and a reflux valve plate. Specific embodiments

[0040] The structure of the jet bubble breaker and the cooking utensil to which the technical solution of the present invention is applied will be further described below in conjunction with the accompanying drawings.

[0041] The jet-type bubble breaker is mainly used in cooking utensils, and this embodiment is specifically used in electric rice cookers. The jet-type bubble breaker is used to attenuate or break the bubbles generated by the electric rice cooker during cooking, thereby reducing the risk of overflow of the cooked food during cooking in the electric rice cooker.

[0042] like Figure 1 and Figure 2 As shown, the present invention discloses a jet-type bubble breaker, comprising a shell 1, and a steam inlet 2 and a steam outlet 3 connected to the shell 1, wherein the steam inlet 2 and the steam outlet 3 are arranged in the up-down direction, and an intermediate storage chamber 4 is arranged in the shell 1, and the intermediate storage chamber 4 is connected to the external space outside the shell 1 through a cold air inlet channel 5 arranged on the shell 1. The steam inlet 2 and the steam outlet 3 are all extended into the intermediate storage chamber 4; in other embodiments, the steam inlet 2 and the steam outlet 3 may be partially extended into the intermediate storage chamber 4 or may not be extended into the intermediate storage chamber 4 but arranged on the side of the intermediate storage chamber 4 to form a left-right arrangement structure.

[0043] like Figure 2 and Figure 3As shown, a steam inlet channel 21 is provided in the steam inlet portion 2, and the steam outlet 22 of the steam inlet channel 21 is connected to the intermediate storage chamber 4. The horizontal height of the steam outlet 22 of the steam inlet channel 21 (that is, the horizontal height of the edge of the steam outlet 22) is higher than the horizontal height of the bottom wall of the intermediate storage chamber 4. The steam inlet channel 21 is conical and its cross-sectional size gradually decreases from the steam inlet 23 to the steam outlet 22 (that is, along the direction of steam flow). The steam inlet channel 21 is used to form a jet flow, and the first bubble breaking structure is formed in this process. When the steam enters the bubble breaker from the steam inlet channel 21, the steam will be accelerated to form a beam-like jet flow. Since the steam inlet channel 21 is conical, the jet flow can be gathered, the flow rate of the jet flow can be increased, thereby reducing the formation of bubbles, and the bubbles can also be broken to form the first bubble breaking structure.

[0044] like Figure 2 and Figure 3 As shown, a steam outlet channel 31 is provided in the steam outlet portion 3, and a steam inlet 32 ​​of the steam outlet channel 31 is connected to the intermediate storage chamber 4, and a horizontal height of the steam inlet 32 ​​of the steam outlet channel 31 (that is, a horizontal height of an edge of the steam inlet 32) is higher than a horizontal height of a bottom wall of the intermediate storage chamber 4; wherein, the steam outlet 22 of the steam inlet channel 21 is close to the steam inlet 32 ​​of the steam outlet channel 31 so as to receive at least a portion of the jet flow ejected by the steam inlet channel 21 and release water vapor in the jet flow to the outside.

[0045] In this embodiment, almost all the steam ejected from the steam inlet channel 21 can enter the steam outlet channel 31. Specifically, in the projection viewed from top to bottom, the steam outlet 22 of the steam inlet channel 21 is located within the range defined by the steam inlet 32 ​​of the steam outlet channel 31 so that the jet flow can be concentratedly sprayed toward the steam outlet channel 31. In this way, the power of the jet flow will not be affected by the dispersion of the steam, and the high-temperature steam and the cold air can be fully mixed in the steam outlet channel 31. In other embodiments, the jet flow may partially enter the steam outlet channel 31 due to different structural layouts.

[0046] A negative pressure gap 6 is reserved between the outlet of the steam inlet portion 2 and the inlet of the steam outlet portion 3. The negative pressure gap 6 is used to automatically introduce the cold air entering the intermediate storage chamber 4 through the cold air inlet channel 5 into the steam outlet channel 31 to assist in bubble breaking by means of the relative low pressure formed by the jet flow. The negative pressure gap 6 is also used to allow the unevaporated bubble juice in the steam outlet channel 31 to at least partially flow back into the intermediate storage chamber 4. The intermediate storage chamber 4 is used to collect the unevaporated bubble juice.

[0047] The outlet of the steam inlet 2 and the inlet of the steam outlet 3 form an axial gap in the steam flow direction, namely the negative pressure gap 6. In other embodiments, the outlet of the steam inlet 2 may extend into the steam outlet channel 31 to form a radial gap, namely the negative pressure gap 6.

[0048] It should be noted that, in the present invention, the horizontal height of the steam outlet 22 of the steam inlet channel 21 and the horizontal height of the steam inlet 32 ​​of the steam outlet channel 31 are both set to be higher than the horizontal height of the bottom wall of the intermediate storage chamber 4, thereby ensuring that the intermediate storage chamber 4 has a certain ability to store liquid.

[0049] In order to achieve a better bubble breaking effect, the inner diameter of the steam outlet channel 31 of the steam outlet portion 3 is much larger than the inner diameter of the steam outlet 22 of the steam inlet channel 21, so that the steam jet flow forms a collapse effect when entering the steam outlet channel 31, that is, the bubbles are suddenly released from the bundle and become free and loose, and a space is provided in the radial direction of the steam outlet channel 31 for the bubbles to expand and deform sufficiently, thereby accelerating the self-breakage of the bubbles. For example, generally speaking, the inner diameter of the steam outlet channel 31 of the steam outlet portion 3 is generally selected from 2 cm to 8 cm, and the inner diameter of the steam outlet 22 of the steam inlet channel 21 is generally selected from 2 mm to 5 mm.

[0050] During operation, the high-temperature steam generated in the pot of the electric rice cooker enters the bubble breaker through the steam inlet 23 of the steam introduction channel 21, and the water vapor in the high-temperature steam is discharged from the steam outlet 33 of the steam outlet channel 31 after the bubbles are broken by the high-temperature steam. The conical steam introduction channel 21 can achieve the bubble breaking effect, and the cold air entering through the cold air introduction channel 5 can also be mixed with the high-temperature steam to achieve condensation and bubble breaking, and at least part of the bubble juice formed by condensation and bubble breaking will flow downward along the wall of the steam outlet channel 31 (part of the water in the bubble juice will directly evaporate and volatilize from the steam outlet channel 31), and flow back into the intermediate storage chamber 4 through the negative pressure gap 6, which can greatly reduce the bubble juice directly flowing back from the steam introduction channel 21, thereby reducing the weakening of the jet power of the jet stream by the backflowing bubble juice.

[0051] As can be seen from the above, the bubble breaker of the present invention cleverly utilizes the cooperation between the conical steam inlet channel 21 and the steam outlet channel 31 and the intermediate storage chamber 4 to achieve the effect of condensation and bubble breaking. The present invention has a simple structure and does not require additional components such as complex fan blades and drivers, and can also greatly reduce costs.

[0052] like Figure 4 As shown, the housing 1 includes an upper housing 11 and a lower housing 12 arranged in an upper and lower position, the upper housing 11 and the lower housing 12 are sealed and connected to form the intermediate storage chamber 4 therebetween, the steam outlet 3 is connected to the upper housing 11 and is formed integrally with the upper housing 11, the cold air inlet channel 5 is arranged on the upper housing 11, the steam inlet 2 is connected to the lower housing 12 and is formed integrally with the lower housing 12, and the lower housing 12 is also provided with a drainage channel 7. The present invention arranges the cold air inlet channel 5 on the upper housing 11 at a relatively upper position, so that the influence of the heat generated by cooking on the introduced cold air can be reduced, wherein the cold air inlet channel 5 can be arranged on the top wall of the upper housing 11, and can also be arranged on the side wall of the upper housing 11. In addition, the drainage channel 7 can discharge the bubble juice generated by bubble breaking. In other embodiments, the steam outlet portion 3 and the steam inlet portion 2 may be independent split structures; or the steam inlet portion 2 and the steam outlet portion 3 may be integrally arranged on the upper shell 11 or integrally arranged on the lower shell 12 .

[0053] The upper shell 11 has a lower opening accommodating cavity (attached Figure 2The reference numeral 4 in the figure also refers to the position of the accommodating chamber here), the upper shell 11 extends downward from the bottom wall of the accommodating chamber to form the steam outlet portion 3, the side wall of the shell 1 extends outward to form a cold air inlet portion 8, and the cold air inlet channel 5 passes through the cold air inlet portion 8 and together with the accommodating chamber. The lower shell 12 includes a main board portion 121 covering the lower opening of the accommodating chamber, the main board portion 121 and the upper shell 11 form the intermediate storage chamber 4, the steam inlet portion 2 extends upward from the upper surface of the main board portion 121 and is adapted to the shape of the conical steam inlet channel 21, and in order to facilitate assembly, the lower shell 12 can also be provided with an air inlet portion 122 below the main board portion 121, and the air inlet portion is provided with an air inlet channel 123 connected to the steam inlet channel 21. In order to facilitate the installation of the upper shell 11 and the lower shell 12, a horizontal mounting portion 111 extending radially is provided at the edge of the lower opening of the upper shell 11. During installation, the horizontal mounting portion 111 is attached to the main board portion 121 and is fastened by, for example, screws (not shown in the drawings). A sealing ring 13 is arranged between the horizontal mounting portion 111 and the main board portion 121.

[0054] like Figure 5 In order to improve the effect of bubble breaking, the bubble breaker of the present invention is provided with a top cover plate 14 covering the outlet of the steam outlet channel 31 at the outlet of the steam outlet portion 3, and a thorn 141 is provided on the inner side of the top cover plate 14, and the top cover plate 14 does not prevent the steam in the steam outlet channel 31 from overflowing outward. Among them, a through hole 142 can be provided on the top cover plate 14 for the steam to overflow outward, and a flow gap can be reserved between the top cover plate 14 and the steam outlet portion 3 for the steam to overflow outward.

[0055] When the above structure is adopted, the top cover plate 14 and the protrusions 141 arranged on the top cover plate 14 can further play a role in breaking bubbles. In addition, the top cover plate 14 can also slow down the speed of steam discharge in the steam outlet channel 31, so that the cold air and high-temperature steam can be more fully mixed, further improving the effect of condensation and breaking bubbles.

[0056] like Figure 5As shown, the bubble breaker further comprises a reflux valve plate 90 movably arranged below the bottom wall of the intermediate storage chamber 4, and a drainage channel 7 is provided on the bottom wall of the intermediate storage chamber 4. The reflux valve plate 90 comprises a cover plate portion 91 and a rod body portion 92 connected to the cover plate portion 91, and the drainage channel 7 is located directly above the cover plate portion 91; when the cover plate portion 91 is in a free hanging state, there is a gap between the cover plate portion 91 and the bottom wall of the intermediate storage chamber 4 so that the liquid in the intermediate storage chamber 4 can be released, and when the cover plate portion 91 is pushed upward by the steam below it to abut against the bottom wall of the intermediate storage chamber 4, the cover plate portion 91 closes the drainage channel 7.

[0057] When a large number of bubbles are formed in the pot, the cover plate portion 91 is pushed upward by the bubbles to close the drainage channel 7, so that the space in the pot and the various channels in the bubble breaker cannot be connected through the drainage channel 7 to affect the air flow in the bubble breaker; and when the bubbles in the pot decrease, the cover plate portion 91 will move downward under the action of gravity to open the drainage channel 7, so that the juice in the intermediate storage chamber 4 can flow back directly into the pot, thereby preventing the juice from accumulating in the intermediate storage chamber 4 and breeding bacteria or even hindering the normal operation of the bubble breaker. Of course, the bubble breaker of the present invention may not be provided with the structure for juice reflux here.

[0058] The rod body portion 92 is movably connected to the bottom wall of the intermediate storage chamber 4, and a rod head portion 93 is provided at the upper end of the rod body portion 92. The rod head portion 93 extends into the intermediate storage chamber 4, and the rod head portion 93 is used to be supported on the bottom wall of the intermediate storage chamber 4 when the cover portion 91 is in a free hanging state.

[0059] The rod head 93 can be connected to the rod body 92 by means of threads or buckles, and the rod body 92 and the cover plate 91 are an integrated structure; or the rod head 93 and the rod body 92 are an integrated structure, and the integrated structure is connected to the cover plate 91 by means of threads or buckles. Of course, the cover plate 91 of the present invention can also be positioned by other structures, such as directly setting a support frame below the cover plate 91 as the positioning of the lower limit of the cover plate 91.

[0060] Correspondingly, the present invention further provides a cooking utensil (not shown in the drawings), comprising a cooking pot, a pot cover capable of covering the cooking pot, and the jet bubble breaker of the present invention, wherein the jet bubble breaker is arranged on the pot cover.

[0061] It should be noted that the jet-type foam breaker is a structure independent of the cooking utensil and is installed on the pot cover of the cooking utensil when in use. In other embodiments, the jet-type foam breaker is directly formed by the pot cover of the cooking utensil. For example, when the cooking utensil is an electric rice cooker, the pot cover of the electric rice cooker is generally a double-layer structure including an inner cover and an outer cover or a three-layer structure including an inner cover, a middle cover, and an outer cover. In this case, the upper shell 11 and the lower shell 12 are directly formed by two layers of the pot cover.

Claims

1. A jet-type bubble breaker, comprising a shell, and a steam inlet and a steam outlet connected to the shell, wherein an intermediate storage chamber is arranged in the shell, and the intermediate storage chamber is connected to an external space outside the shell through a cold air inlet channel arranged on the shell; characterized in that: The steam introduction part is provided with a steam introduction channel, a steam outlet of the steam introduction channel is connected to the intermediate storage chamber, the steam outlet of the steam introduction channel is higher than the bottom wall of the intermediate storage chamber, the steam introduction channel is tapered, that is, its cross-sectional size gradually decreases along the steam flow direction, and the steam introduction channel is used to form a jet flow; The steam outlet portion is provided with a steam outlet channel, a steam inlet of the steam outlet channel is connected to the intermediate storage chamber, and a level of the steam inlet of the steam outlet channel is higher than a level of a bottom wall of the intermediate storage chamber; The steam outlet of the steam introduction channel is close to the steam inlet of the steam outlet channel so as to receive at least part of the jet flow ejected by the steam introduction channel, and the steam outlet channel releases at least part of the water vapor in the jet flow outwardly; A negative pressure gap is reserved between the outlet of the steam inlet portion and the inlet of the steam outlet portion, and the negative pressure gap is used to automatically introduce the cold air entering the intermediate storage chamber through the cold air inlet channel into the steam outlet channel to assist in bubble breaking by means of the relative low pressure formed by the jet flow, and the negative pressure gap is also used to allow the unevaporated bubble juice in the steam outlet channel to at least partially flow back into the intermediate storage chamber, and the intermediate storage chamber is used to collect the unevaporated bubble juice.

2. The jet bubble breaker according to claim 1, characterized in that: At least a portion of the steam inlet extends into the intermediate storage chamber.

3. The jet type bubble breaker according to claim 1, characterized in that: At least part of the steam discharge portion extends into the intermediate storage chamber.

4. The jet bubble breaker according to claim 1, characterized in that: A top cover plate covering the outlet of the steam outlet channel is arranged on the outlet of the steam outlet portion, and thorns are arranged on the inner side of the top cover plate. The top cover plate does not prevent the steam in the steam outlet channel from overflowing outwards.

5. The jet type bubble breaker according to claim 1, characterized in that: In a projection viewed from above, the steam outlet of the steam inlet channel is located within a range defined by the steam inlet of the steam outlet channel.

6. The jet type bubble breaker according to claim 1, characterized in that: The inner diameter of the steam outlet channel is much larger than the inner diameter of the steam outlet of the steam inlet channel so that the steam jet flow forms a collapse effect when entering the steam outlet channel.

7. The jet bubble breaker according to any one of claims 1 to 6, characterized in that: The shell includes an upper shell and a lower shell which are arranged up and down, the upper shell and the lower shell are sealed and connected to form the intermediate storage chamber between the upper shell and the lower shell, the steam outlet portion is connected to the upper shell, the cold air inlet channel is arranged on the upper shell, the steam inlet portion is connected to the lower shell, and a drainage channel is also arranged on the bottom wall of the lower shell.

8. The jet bubble breaker according to any one of claims 1 to 6, characterized in that: The device further comprises a reflux valve plate movably arranged on the bottom wall of the intermediate storage chamber, wherein the reflux valve plate comprises a cover plate portion, wherein the cover plate portion is located below the bottom wall of the intermediate storage chamber, and a drainage channel is provided on the bottom wall of the intermediate storage chamber, wherein the drainage channel is located directly above the reflux valve plate; When the cover portion is in a free hanging state, there is a gap between the cover portion and the bottom wall of the intermediate storage chamber so that the liquid in the intermediate storage chamber can be released. When the cover portion is pushed upward by the steam below it to abut against the bottom wall of the intermediate storage chamber, the cover portion closes the drainage channel.

9. The jet type bubble breaker according to claim 8, characterized in that: The reflux valve plate further comprises a rod body portion connected to the cover plate portion, and the reflux valve plate is movably connected to the bottom wall of the intermediate storage chamber through the rod body portion.

10. A cooking utensil comprising a cooking pot and a pot cover capable of covering the cooking pot, characterized in that: It also includes the jet bubble breaker according to any one of claims 1 to 9, wherein the jet bubble breaker is arranged on the pot cover.

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