CN213664818U - Liquid heating device - Google Patents

Abstract

The utility model provides a liquid heating device, include: a container body including a container bottom wall; the first groove is arranged on the inner surface of the bottom wall of the container; the second groove is arranged on the inner surface of the bottom wall of the container; the first grooves and the second grooves are distributed in a crossed mode and used for polymerizing the small bubbles to form the large bubbles. The existence of first recess and second recess for in the heating process, can produce a lot of little steam bubbles at two kinds of recesses, and make the little steam bubble that generates slide the operation along two kinds of recesses, after arbitrary two or a plurality of little steam bubbles collide together, can take place polymerization, thereby form big steam bubble. Because the adhesion of big steam bubbles to the container diapire is stronger, can reduce the frequency that "cavitation" phenomenon takes place, can effectively avoid a large amount of little steam bubbles come-up to break after becoming big steam bubbles and produce the noise, can effectively reduce the noise of liquid heating device operation in-process.

Description

Liquid heating device

Technical Field

The utility model relates to a kitchen utensil technical field particularly, relates to a liquid heating device.

Background

Boiling means are often used in the engineering field to enhance heat exchange, and one of the most common application scenarios is an electric kettle. At the beginning stage of the operation of the electric kettle, when the temperature of the kettle bottom and the region corresponding to the heating pipe is high enough, bubbles can be generated and grow at nucleation points in the region, the bubbles float upwards and are separated from the bottom of the kettle after reaching a certain size, and when the bubbles float upwards to the upper layer of a water layer, the bubbles can collapse due to the lower water temperature of the upper layer, which is called as a cavitation phenomenon. The noise caused by the phenomenon of 'cavitation' is one of the main pain points of the products such as the electric kettle.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least one of the problems of the prior art or the related art.

To this end, it is an aspect of the present invention to provide a liquid heating apparatus.

In view of this, an aspect of the present invention provides a liquid heating apparatus, including: a container body including a container bottom wall; the first groove is arranged on the inner surface of the bottom wall of the container; the second groove is arranged on the inner surface of the bottom wall of the container; the first grooves and the second grooves are distributed in a crossed mode and used for polymerizing the small bubbles to form the large bubbles.

The liquid heating device provided by the embodiment comprises a container body, a first groove and a second groove, wherein the container body is used for containing liquid. Through set up first recess on the surface at the middle part of the orientation vessel body of container diapire to and set up the second recess on the surface at the middle part of the orientation vessel body of container diapire, the existence of two kinds of recesses, make the in-process of liquid heating device at the internal liquid of heating vessel, can generate a lot of little bubbles in two kinds of recesses, and make the little bubble that generates do the operation of sliding along two kinds of recesses, after arbitrary two or a plurality of little bubbles collide together, the polymerization can take place, thereby form big bubble. Because the adhesion of big bubble to the container diapire is stronger, can reduce the frequency that "cavitation" phenomenon takes place, can effectively avoid a large amount of little bubbles come up and break and produce the noise after becoming big bubble, can effectively reduce the noise of liquid heating device operation in-process, can reduce the noise volume more than 4dB at least. And through making second recess and first recess intercommunicate to cross distribution for a plurality of small bubbles that slide along second recess and first recess can have more chances to polymerize and form big bubble, can further reduce liquid heating device's operating noise.

In addition, according to the utility model discloses above-mentioned technical scheme provides a liquid heating device still has following additional technical characteristics:

in one possible design, the first groove extends circumferentially around a centerline of the container bottom wall; at least a portion of the second groove extends away from a centerline of the container bottom wall.

In this design, make first recess encircle the regional circumference distribution in middle part of the inside surface of container diapire, specifically encircle the central line circumference distribution of the inside surface of container diapire for the tiny bubble can be produced around the central line circumference of the inside surface of container diapire, is favorable to the thermally equivalent of liquid, and reduces liquid heating device's operating noise. Particularly, under the condition that the heating elements of the liquid heating device are annularly distributed below the bottom wall of the container, the region of the bottom wall of the container corresponding to the heating elements is a heating region, and the heating region has higher temperature rise compared with other regions of the bottom wall of the container, so that more small bubbles can be generated. And through the central line circumference distribution of encircleing the inboard surface of container diapire with first recess, be favorable to making a large amount of little bubbles that produce slide and the polymerization forms big bubble along first recess to avoid a large amount of little bubbles come-up to break and produce the noise after becoming big bubble, can effectively reduce the noise of liquid heating device operation in-process.

And through making the direction of the part or whole inboard surface's of second recess to keeping away from the container diapire direction extension to make second recess and first recess cross distribution, can make second recess and first recess whole comparatively evenly distributed on the container diapire, thereby be favorable to the thermally equivalent of liquid, and the polymerization is little bubble more and is formed big bubble, reduces liquid heating device's noise of operation. Specifically, in the case where the inner side surface of the container bottom wall is a round surface, the second groove may extend in the radial direction of the inner side surface of the container bottom wall, or may extend only in a direction away from the center line, instead of extending in the radial direction. As long as the second groove can be gradually distanced from the center line of the inner side surface of the bottom wall of the container.

It should be noted that the center line is perpendicular to the inner surface of the bottom wall of the container. The inner side surface of the container bottom wall, i.e. the surface of the container bottom wall facing towards the middle of the container body, i.e. the inner surface of the container bottom wall.

In one possible design, the first recess includes a plurality of annular grooves, the plurality of annular grooves having different inner diameters; in any two annular grooves, the annular groove with the larger inner diameter is surrounded on the periphery of the annular groove with the smaller inner diameter.

In this design, the first groove is formed by a plurality of annular grooves, the annular grooves are different in size, specifically, the outer diameters and the inner diameters of the annular grooves are different, and the annular grooves are concentrically distributed or are non-concentrically distributed but still distributed in a mode of sleeving a small ring by a large ring. The bottom wall of the container is concentrated at the position of the annular groove to generate small bubbles, and the small bubbles slide along the annular groove to be polymerized to form large bubbles. Especially, under the condition that the heating elements of the liquid heating device are annularly distributed below the bottom wall of the container, the generation and the aggregation of small bubbles are facilitated, and the operation noise of the liquid heating device is reduced. Moreover, because the first groove is formed by a plurality of annular grooves, the existence of the annular grooves is beneficial to small bubbles to be generated on the bottom wall of the container uniformly, the liquid in the liquid heating device is beneficial to being heated uniformly, and the heating effect is ensured.

In one possible design, the outer diameter of the annular groove of the plurality of annular grooves that is distal from the centerline of the bottom wall of the container may range from 92mm to 110 mm.

In this design, in the case where the plurality of annular grooves are distributed in a large-to-small ring manner, the outward expansion range of the plurality of annular grooves is limited by making the outer diameter of the outermost annular groove among the plurality of annular grooves between 92mm and 110mm, that is, the outer diameter of the entirety of the plurality of annular grooves between 92mm and 110mm, for example, 95mm, 98mm, 100mm, 108mm, or the like. Because the heating area corresponding to the heating element of the liquid heating device generally does not extend to the edge of the bottom wall of the container, that is, the temperature of the edge of the bottom wall of the container is not very high compared with the temperature of the middle area, the problem that the distribution range of the annular groove is too large, for example, the outer diameter exceeds 110mm, and even extends to the outer edge of the bottom wall of the container, which causes waste, can be effectively avoided, and thus, the processing time and the processing difficulty of the first groove are increased. In addition, the problem that the distribution range of the plurality of annular grooves is too small, for example, the outer diameter is smaller than 92mm, so that the plurality of annular grooves do not fully occupy the bottom wall of the container, a plurality of small bubbles cannot be polymerized to form large bubbles, and the bubbles still rise and break to generate noise, so that the noise reduction effect is influenced, can also be avoided.

In one possible design, the distance between two adjacent annular grooves is in the range of 1mm to 2 mm.

In this design, in the case where a plurality of annular grooves are distributed in a large-ring-in-small-ring manner, by making the distance between the annular groove on the outer side and the annular groove on the inner side between 1mm and 2mm, for example, making the distance between them 1.2mm, 1.6mm, 1.8mm, 2mm, or the like, of two adjacent annular grooves. The problem that the noise reduction effect of a plurality of annular grooves is influenced due to the fact that the position of a part of small bubbles between two annular grooves is generated, floats upwards and is broken when the distance between the two annular grooves is too large, for example, the distance between the two annular grooves is larger than 2mm, is effectively avoided. And can not be too close through arranging of making a plurality of ring channels, effectively avoided between the two the interval undersize, for example be less than 1mm, and increase the processing degree of difficulty and the processing cost of a plurality of ring channels, lead to container diapire structural strength variation even, and easy the residue etc. of appearing, influence the security of drinking liquid.

In one possible design, the second grooves extend in a sinusoidal wave pattern and are circumferentially distributed about a centerline of the container bottom wall.

In this design, the second grooves are distributed around the center line of the inner side surface of the bottom wall of the container in such a manner as to intersect the first grooves by extending the second grooves in a sine wave shape. The small bubbles generated at the second groove can slide along the second groove and can be polymerized with the small bubbles at the intersection to form large bubbles; the small bubbles generated at the second groove can slide along the second groove and even slide to the first groove, and then slide along the first groove to be polymerized with the small bubbles generated at the first groove to form large bubbles. Thereby effectively reducing the operating noise of the liquid heating device and improving the noise reduction effect.

In one possible design, the second groove comprises a plurality of wave crests, and the distance between two adjacent wave crests ranges from 0.5mm to 2 mm.

In this design, in the case where the second groove extends in a sine wave shape, the second groove has a plurality of crest portions by extending the crest portions in a direction away from the center line of the inner side surface of the bottom wall of the container, and making the interval between two adjacent crest portions 0.5mm to 2mm, for example, 0.6mm, 1mm, 1.7mm, 2mm, or the like. On the one hand, the distance between two adjacent wave crest portions can be effectively avoided to be too large and larger than 2mm, so that a large number of small bubbles can be generated at the gap between the wave crest portions and float and break, and the noise reduction effect is influenced. On the other hand can effectively avoid two adjacent crest portions distance too closely, be less than 0.5mm, and lead to causing the influence to the structural strength of container diapire, and even and the structure residue condition appears, influence the safety of drinking of liquid, but also can increase the processing degree of difficulty and the processing cost of second recess.

In one possible design, the second groove comprises a plurality of sub-grooves, each sub-groove extending in a V-shape; the plurality of sub-grooves are circumferentially distributed around the center line of the bottom wall of the container, and the V-shaped end parts of any two adjacent sub-grooves are mutually communicated.

In this design, specifically make the second recess have a plurality of subslots that are the extension of V type, through making a plurality of subslots encircle the central line circumference distribution of the inside surface of container diapire to make two adjacent subslots with the tip intercommunication through the V type, be favorable to a plurality of subslots to be continuous, quick machine-shaping. Moreover, the sub-grooves extend in a V shape, and the sub-grooves are distributed in a crossed manner with the first grooves through the second grooves in the distribution mode, so that small bubbles generated at the second grooves slide along the second grooves and are polymerized with the small bubbles at the crossed positions to form large bubbles; the small bubbles generated at the second groove can slide along the second groove and even slide to the first groove, and then slide along the first groove to be polymerized with the small bubbles generated at the first groove to form large bubbles. Thereby effectively reducing the operating noise of the liquid heating device and improving the noise reduction effect.

In one possible design, the pitch between the V-shaped tips of two adjacent sub-grooves ranges from 0.5mm to 2 mm.

In this design, in the case where the second groove has a plurality of sub-grooves extending in a V-shape, the pitch between the tips of two adjacent sub-grooves is made to be between 0.5mm and 2mm, specifically, between the tips of two V-shapes, for example, the above pitch is 0.5mm, 1.1mm, 1.8mm, 2mm, or the like. On the one hand, the distance between the tip parts of two adjacent sub-grooves is effectively avoided to be too large and larger than 2mm, so that a large number of small bubbles can be generated at the gap between the two sub-grooves and float upwards to break, and the noise reduction effect is influenced. On the other hand, the phenomenon that the distance between two adjacent tip parts is too close and is less than 0.5mm, and the influence on the structural strength of the bottom wall of the container is caused, and even the structural residue condition is caused, so that the drinking safety of liquid is influenced, and the processing difficulty and the processing cost of the second groove are increased.

In one possible design, the first recess forms a first region between an edge proximate to a centerline of the container bottom wall and an edge distal from the centerline of the container bottom wall; the second groove extends within the first region.

In this design, in the case where the first grooves are circumferentially distributed around the central region of the inner side surface of the container bottom wall, the first region is formed by making the region of the container bottom wall occupied by the first grooves a first region, i.e., between the edge of the first grooves close to the center line of the container bottom wall and the edge of the first grooves remote from the center line of the container bottom wall, and making the second grooves extend within the first region. The second groove and the first groove are guaranteed to be crossed sufficiently, small bubbles are generated uniformly in the coverage range of the first groove, heating effect is guaranteed, and noise reduction effect is guaranteed. Moreover, the covering area of the bottom wall of the container can be reduced, and the heating and drinking effects are prevented from being influenced.

In one possible design, the spacing between the edge of the first recess near the centerline of the container bottom wall and the edge away from the centerline of the container bottom wall may range from 14mm to 18 mm.

In this design, the outer edge of the first groove is spaced from the inner edge of the first groove by a distance of between 14mm and 18mm, i.e. the edge of the first groove close to the centre line of the container bottom wall is spaced from the edge of the first groove remote from the centre line of the container bottom wall by a distance of between 14mm and 18mm, such as 14mm, 15mm, 16.5mm or 17.8mm, etc. On one hand, the influence of the first groove coverage range being too narrow, such as less than 14mm, on the noise reduction effect can be effectively avoided; on the other hand, the problem that the hydrophobicity of the bottom wall of the container is seriously influenced due to waste caused by the overlarge distance, such as more than 18mm, can be effectively avoided.

In one possible design, the width of the first groove has a value in the range of 0.3mm to 0.7 mm; and/or the width of the notch of the second groove ranges from 0.3mm to 0.7 mm; and/or the groove depth of the first groove ranges from 0.1mm to 0.4 mm; and/or the groove depth of the second groove ranges from 0.1mm to 0.4 mm.

In the design, the width of the groove opening of the second groove and the first groove is 0.3mm to 0.7mm, for example, the width of the groove opening of the second groove and the first groove is 0.3mm, 0.5mm or 0.6mm, etc., the groove depth of the second groove and the first groove is 0.1mm to 0.4mm, for example, the groove depth of the second groove and the first groove is 0.1mm, 0.2mm or 0.35mm, which is beneficial for small bubbles to be generated at the second groove and the first groove and to slide along the second groove and the first groove, and the large bubbles formed by polymerization are better adhered to the bottom wall of the container.

Moreover, the width of the groove opening of the second groove is the same as that of the first groove, and under the condition that the groove depth of the second groove is the same as that of the first groove, the second groove and the first groove are facilitated to be machined and formed through one machine by the aid of the same machining parameters, and the second groove and the first groove are convenient to machine and form quickly.

In one possible design, the inner surface of the groove bottom wall of the first groove is an arc surface, and the inner surface of the groove bottom wall of the second groove is an arc surface.

In this design, through making the tank bottom wall of second recess and first recess be the cambered surface, can effectively avoid impurity to get into second recess and first recess and be difficult for removing, influence liquid heating effect. Moreover, the small bubbles can move to the openings of the two grooves along the cambered surface and then slide along the two grooves, so that the small bubbles and other small bubbles are polymerized to form large bubbles which are adhered to the bottom wall of the container.

In one possible design, the liquid heating apparatus further comprises: the heating element is arranged on the outer surface of the bottom wall of the container or below the bottom wall of the container, and the projection area of the heating element on the inner surface of the bottom wall of the container is a heating area; the first groove and the second groove are arranged in the heating area.

In this design, a heating element may be provided, in particular on or below the bottom wall of the container, to heat the liquid in the container body. The orthographic projection area of the heating element on the bottom wall of the container is a heating area, and the second groove and the first groove cover the heating area and extend in the heating area. Because the temperature of the heating area is higher than that of other areas of the bottom wall of the container, more small bubbles can be generated, and the two grooves are arranged in the area, so that the small bubbles can be generated at the grooves in a concentrated manner, and can be polymerized to form large bubbles, and the noise reduction effect is improved.

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

Drawings

Figure 1 shows a top view of a liquid heating apparatus according to an embodiment of the present invention;

FIG. 2 illustrates a graph comparing acoustic power curves for a related art liquid heating apparatus and a liquid heating apparatus of some embodiments of the present application;

fig. 3 illustrates a schematic view of the heating of the first or second groove in some embodiments of the invention;

fig. 4 illustrates a schematic view of the formation of a vaporization core at a first groove or a second groove in some embodiments of the invention;

fig. 5 illustrates a schematic view of the formation of small bubbles at the first groove or the second groove in some embodiments of the invention;

fig. 6 shows a schematic diagram of the process of sliding, converging and then forming the small bubbles at the first groove or the second groove in some embodiments of the present invention.

Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:

100 container bottom wall, 110 first recess, 120 second recess.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A liquid heating apparatus according to some embodiments of the present invention is described below with reference to fig. 1.

The first embodiment is as follows:

as shown in fig. 1, the liquid heating apparatus of the present embodiment includes a container body, a first groove 110 and a second groove 120, wherein the container body is used for containing liquid. Through set up first recess 110 on the surface towards the middle part of vessel's body at vessel bottom wall 100 to and set up second recess 120 on the surface towards the middle part of vessel's body at vessel bottom wall 100, the existence of two kinds of recesses, make liquid heating device in the in-process of the liquid of heating vessel body, can generate a lot of little steam bubbles at two kinds of recesses, and make the little steam bubble that generates do the operation of sliding along two kinds of recesses, after arbitrary two or a plurality of little steam bubbles collide together, can take place polymerization, thereby form big steam bubble. Because the adhesion of big bubble to container diapire 100 is stronger, can reduce the frequency that "cavitation" phenomenon takes place, can effectively avoid a large amount of little bubbles come up and break and produce the noise after becoming big bubble, can effectively reduce the noise of liquid heating device operation in-process, can reduce the noise volume more than 4dB at least.

And the second groove 120 and the first groove 110 are communicated with each other and distributed in a crossed manner, so that a plurality of small bubbles sliding along the second groove 120 and the first groove 110 have more chances to be polymerized to form a large bubble, and the operation noise of the liquid heating device can be further reduced.

Specifically, the areas where the groove structures such as the second groove 120 and the first groove 110 are located are preferential generation areas of the vaporization core. This is due to the fact that in the area of the grooves on the surface, the liquid in the grooves is heated more area than in the plane, as shown in fig. 3. Secondly, there is a tendency for more gas to remain in the grooves, which is the core of the preferential bubble formation, as shown in fig. 4. Due to the combined effect of the large heating area in the grooves and the large number of vaporization cores, the number of small bubbles at the second grooves 120 and the second grooves 120 is increased significantly, as shown in fig. 5. Thus, the density of the vaporization core of the container bottom wall 100 is significantly increased. In the subsequent heating process, the generated small bubbles easily slide along the grooves, as shown in fig. 6; after the two small bubbles collide together, a polymerization phenomenon occurs, and finally large bubbles are formed.

Research has shown that the phenomenon of "cavitation" is related to the number of vaporization cores in the heated wall, which is related to the heat flux density, the wall material, the wall contact angle and the surface microstructure. Under the condition that parameters such as heating power and the like are not changed, the groove structures, particularly the second groove 120 and the first groove 110, are arranged on the surface of the bottom wall 100 of the container, which faces the middle part of the container body, on the one hand, the number of vaporization cores is greatly increased, on the other hand, the groove structures also promote small bubbles to be polymerized into large bubbles, and the noise generated by the breakage of the small bubbles at the middle and high water level positions, which are separated from the bottom wall 100 of the container and enter the container body, is reduced.

Example two:

on the basis of the first embodiment, as shown in fig. 1, the first grooves 110 are further defined to be circumferentially distributed around the middle region of the inner side surface of the container bottom wall 100, specifically, around the center line of the inner side surface of the container bottom wall 100. So that the small bubbles can be generated circumferentially around the center line of the inner side surface of the bottom wall 100 of the container, facilitating uniform heating of the liquid, and reducing the operating noise of the liquid heating apparatus. Particularly, in the case that the heating elements of the liquid heating apparatus are annularly distributed below the container bottom wall 100, the region of the container bottom wall 100 corresponding to the heating elements is a heating region, and the heating region has a higher temperature rise than other regions of the container bottom wall 100, so that more small bubbles can be generated. The first groove 110 is circumferentially distributed around the central line of the inner side surface of the bottom wall 100 of the container, so that a large amount of generated small bubbles can slide along the first groove 110 to form large bubbles in a polymerization manner, the phenomenon that the large bubbles are broken after floating to become the large bubbles and generate noise is avoided, and the noise in the operation process of the liquid heating device can be effectively reduced.

In addition, as shown in fig. 1, a part or all of the second grooves 120 are extended in a direction away from the center line of the inner surface of the container bottom wall 100, and the second grooves 120 are distributed to intersect with the first grooves 110. The second grooves 120 and the first grooves 110 can be uniformly distributed on the bottom wall 100 of the container, so that the uniform heating of the liquid is facilitated, more small bubbles are gathered to form large bubbles, and the operation noise of the liquid heating device is reduced. Specifically, in the case where the inner side surface of the container bottom wall 100 is a round surface, the second groove 120 may extend in the radial direction of the inner side surface of the container bottom wall 100, or may extend only in a direction away from the center line, instead of extending in the radial direction. So long as the second groove 120 can be gradually spaced away from the centerline of the inside surface of the container bottom wall 100.

It should be noted that the center line is perpendicular to the inner surface of the container bottom wall 100. The inner side surface of the container bottom wall 100, i.e., the surface of the container bottom wall 100 facing the middle of the container body, i.e., the inner surface of the container bottom wall 100.

Example three:

in addition to the first or second embodiment, as shown in fig. 1, the first groove 110 is further defined to be formed by a plurality of annular grooves, and the plurality of annular grooves are different in size, specifically, different in outer diameter and inner diameter, and are distributed concentrically, or non-concentrically but still distributed in a manner of a large ring and a small ring. The container bottom wall 100 is beneficial to generating small bubbles at the position of the annular groove, and the small bubbles slide along the annular groove and are polymerized to form large bubbles. Especially, in the case that the heating elements of the liquid heating apparatus are annularly distributed below the bottom wall 100 of the container, the generation and aggregation of small bubbles are facilitated, and the operation noise of the liquid heating apparatus is reduced. Moreover, because the first groove 110 is formed by a plurality of annular grooves, the existence of the annular grooves is beneficial to the small bubbles to be generated on the bottom wall 100 of the container more uniformly, and is beneficial to the liquid in the liquid heating device to be heated uniformly, thereby ensuring the heating effect.

Further, the center lines of the plurality of annular grooves passing through the center of the circle are overlapped, namely the plurality of annular grooves are concentrically distributed. Further, the over-center line of the plurality of annular grooves overlaps the center line of the inside surface of the container bottom wall 100. Make this internal liquid of container be heated more evenly, guarantee heating effect and noise reduction effect, moreover, be favorable to the quick machine-shaping of first recess 110.

Of course, in other possible embodiments, the plurality of annular grooves may not be arranged in a large nested ring, but may be the same size and distributed across and circumferentially around the centerline of the inside surface of the container bottom wall 100. For example, a line connecting the centers of the plurality of annular grooves may form a circle, which may be made to surround the center line by one turn, or may be made to have the center on the center line.

Further, the outer diameter of the outermost annular groove among the plurality of annular grooves is set to be 92mm to 110mm, that is, the outer diameter of the entirety of the plurality of annular grooves is set to be 92mm to 110mm, for example, 95mm, 98mm, 100mm, 108mm, or the like, which limits the outward expansion range of the plurality of annular grooves. Since the heating area corresponding to the heating element of the liquid heating apparatus generally does not extend to the edge of the container bottom wall 100, that is, the temperature of the edge of the container bottom wall 100 is not very high compared with the temperature of the middle area, it can effectively avoid the waste caused by the large distribution range of the annular groove, for example, the outer diameter exceeds 110mm, and even extends to the outer edge of the container bottom wall 100, thereby increasing the processing time and the processing difficulty of the first groove 110. In addition, the problem that the distribution range of the plurality of annular grooves is too small, for example, the outer diameter is smaller than 92mm, so that the plurality of annular grooves do not fully occupy the bottom wall 100 of the container, a plurality of small bubbles cannot be polymerized to form large bubbles, and the bubbles still rise and break to generate noise, thereby affecting the noise reduction effect can also be avoided.

Further, of the two adjacent annular grooves, the annular groove on the outer side is spaced from the annular groove on the inner side by 1mm to 2mm, for example, by 1.2mm, 1.6mm, 1.8mm, 2mm, and so on. The problem that the noise reduction effect of a plurality of annular grooves is influenced due to the fact that the position of a part of small bubbles between two annular grooves is generated, floats upwards and is broken when the distance between the two annular grooves is too large, for example, the distance between the two annular grooves is larger than 2mm, is effectively avoided. And through making the arrangement of a plurality of ring channels can not be too close, effectively avoided between the two the interval undersize, for example be less than 1mm, and increased the processing degree of difficulty and the processing cost of a plurality of ring channels, lead to 100 structural strength variation of container diapire even, and easy the residue etc. appear, influence the security of drinking liquid.

Example four:

in addition to any of the above embodiments, the second grooves 120 are further extended in a sine wave shape, and the second grooves 120 are distributed around the center line of the inner surface of the container bottom wall 100 so as to intersect with the first grooves 110. The small bubbles generated at the second groove 120 can slide along the second groove 120 and can be polymerized with the small bubbles at the intersection to form large bubbles; the small bubbles generated at the second groove 120 can slide along the second groove 120 and even slide to the first groove 110, and then slide along the first groove 110 to be polymerized with the small bubbles generated at the first groove 110 to form large bubbles. Thereby effectively reducing the operating noise of the liquid heating device and improving the noise reduction effect.

Further, the second groove 120 has a plurality of crest portions by extending the crest portions in a direction away from the center line of the inner side surface of the container bottom wall 100 and making the interval between two adjacent crest portions 0.5mm to 2mm, for example, 0.6mm, 1mm, 1.7mm, 2mm, or the like. On the one hand, the distance between two adjacent wave crest portions can be effectively avoided to be too large and larger than 2mm, so that a large number of small bubbles can be generated at the gap between the wave crest portions and float and break, and the noise reduction effect is influenced. On the other hand, the situation that the distance between two adjacent crest portions is too close and is less than 0.5mm, which causes influence on the structural strength of the bottom wall 100 of the container, and even the situation of structural residues, which influences the drinking safety of liquid, can be effectively avoided, and the processing difficulty and the processing cost of the second groove 120 can be increased.

Example five:

in a fourth difference from the above embodiment, as shown in fig. 1, the second groove 120 has a plurality of sub-grooves extending in a V-shape, the plurality of sub-grooves are circumferentially distributed around the center line of the inner side surface of the container bottom wall 100, and two adjacent sub-grooves are communicated with the end portion passing through the V-shape. The continuous and quick processing and forming of the plurality of sub-grooves are facilitated. Moreover, by extending the sub-grooves in a V-shape, the sub-grooves are distributed across the first grooves 110 via the second grooves 120 in such a distribution manner, which is beneficial for the small bubbles generated at the second grooves 120 to slide along the second grooves 120 and to aggregate with the small bubbles at the intersections to form large bubbles; the small bubbles generated at the second groove 120 can slide along the second groove 120 and even slide to the first groove 110, and then slide along the first groove 110 to be polymerized with the small bubbles generated at the first groove 110 to form large bubbles. Thereby effectively reducing the operating noise of the liquid heating device and improving the noise reduction effect.

Further, the opening of the V-shape of each sub-groove is toward the middle of the container bottom wall 100, for example, toward the center line of the inner side surface of the container bottom wall 100. Extending each sub-groove toward the centerline of the inside surface away from the container bottom wall 100 is beneficial for enhancing noise reduction.

Further, the pitch between the tips of two adjacent sub-grooves is made between 0.5mm and 2mm, specifically between the tips of two V-shapes, for example, the above pitch is made between 0.5mm, 1.1mm, 1.8mm or 2mm, etc. On the one hand, the distance between the tip parts of two adjacent sub-grooves is effectively avoided to be too large and larger than 2mm, so that a large number of small bubbles can be generated at the gap between the two sub-grooves and float upwards to break, and the noise reduction effect is influenced. On the other hand, the influence on the structural strength of the bottom wall 100 of the container, even the influence on the drinking safety of liquid due to the occurrence of structural residues, caused by the over-close distance of two adjacent tip parts, which is less than 0.5mm, can be effectively avoided, and the processing difficulty and the processing cost of the second groove 120 can be increased.

Example six:

in addition to the second embodiment, the inner edge of the first groove 110, i.e., the edge of the first groove 110 close to the center line of the inner side surface of the container bottom wall 100, is further closer to the center line than the second groove 120. And the outer edge of the first groove 110, i.e., the edge of the first groove 110 away from the centerline of the inside surface of the container bottom wall 100, is farther from the centerline than the second groove 120. I.e. the second groove 120 extends within the coverage of the first groove 110. The second groove 120 and the first groove 110 are ensured to be crossed sufficiently, and small bubbles are generated uniformly in the coverage range of the first groove 110, so that the heating effect is ensured, and the noise reduction effect is ensured. Moreover, the area of coverage of the container bottom wall 100 can be reduced, avoiding affecting the heating and drinking effect.

In a particular application, a first region is formed between an edge of the first recess 110 proximate to a centerline of the container bottom wall 100 and an edge of the first recess 110 distal from the centerline of the container bottom wall 100; the second groove 120 extends within the first region.

Specifically, in the case where the first groove 110 has a plurality of annular grooves, and in the case where the plurality of annular grooves are distributed in a large-to-small ring manner, the second groove 120 may be made to extend between the annular groove having the smallest outer diameter and the annular groove having the largest outer diameter.

Further, the spacing between the edge of the first recess 110 near the centerline of the container bottom wall 100 and the edge of the first recess 110 away from the centerline of the container bottom wall 100 ranges from 14mm to 18 mm. I.e. the edge of the first recess 110 remote from the centre line of the inner side surface of the container bottom wall 100, and the edge of the first recess 110 close to the centre line of the inner side surface of the container bottom wall 100, are spaced apart by between 14mm and 18mm, such as 14mm, 15mm, 16.5mm or 17.8mm, etc. On one hand, the influence of the narrow coverage range of the first groove 110, for example, less than 14mm, on the noise reduction effect can be effectively avoided; on the other hand, the above-mentioned excessive spacing, for example, greater than 18mm, is effectively avoided, which may result in waste and even seriously affect the hydrophobicity of the container bottom wall 100.

Specifically, in the case where the first groove 110 has a plurality of annular grooves, the distance between the outer diameter of the annular groove having the largest outer diameter among the plurality of annular grooves and the inner diameter of the annular groove having the smallest outer diameter among the plurality of annular grooves is made between 14mm and 18 mm. In the case where the inner side surface of the container bottom wall 100 is a round surface, the width of the first groove 110 in the radial direction of the inner side surface of the container bottom wall 100 is made to range from 14mm to 18 mm.

Example seven:

in addition to any of the above embodiments, further making the width of the second groove 120 and the width of the notch of the first groove 110 between 0.3mm and 0.7mm, for example, the width of the second groove 120 and the notch of the first groove 110 is 0.3mm, 0.5mm, or 0.6mm, etc., making the groove depth of the second groove 120 and the first groove 110 between 0.1mm and 0.4mm, for example, the groove depth of the second groove 120 and the first groove 110 is 0.1mm, 0.2mm, or 0.35mm, facilitates the generation of small bubbles at the second groove 120 and the first groove 110, and the small bubbles slide along the second groove 120 and the first groove 110, and the large bubbles formed by polymerization adhere to the container bottom wall 100 better.

Moreover, the width of the groove opening of the second groove 120 is the same as that of the first groove 110, and under the condition that the groove depth of the second groove 120 is the same as that of the first groove 110, the second groove 120 and the first groove 110 can be machined and formed through one machine by adopting the same machining parameters, so that the second groove 120 and the first groove 110 can be machined and formed quickly.

Furthermore, the bottom walls of the second groove 120 and the first groove 110 are both arc surfaces, so that impurities can be effectively prevented from entering the second groove 120 and the first groove 110 and being not easily removed, and the liquid heating effect is not affected. Moreover, the small bubbles can move to the openings of the two grooves along the arc surface and then slide along the two grooves, so that the small bubbles and other small bubbles can be polymerized to form large bubbles which are adhered to the bottom wall 100 of the container.

Example eight:

in addition to any of the above embodiments, a heating element (not shown) is further disposed on the bottom wall 100 of the container or below the bottom wall 100 of the container to heat the liquid in the container body. The heating area is defined by the orthographic projection area of the heating element on the bottom wall 100 of the container, and the heating area is covered by the second groove 120 and the first groove 110, and extends in the heating area. Because the temperature of the heating area is higher than that of other areas of the container bottom wall 100, more small bubbles can be generated, and the two grooves are arranged in the area, so that the small bubbles can be generated at the grooves in a concentrated manner, and can be polymerized to form large bubbles, and the noise reduction effect is improved.

Furthermore, the heating element is an electric heating tube, an electric heating film or an electromagnetic coil.

Further, the liquid heating device is an electric kettle or an electric cup.

Example nine:

the present embodiment specifically defines the surface texture structure of the container bottom wall 100 formed by the second groove 120 and the first groove 110, and utilizes the surface texture structure to suppress the generation of noise due to the rupture of the nucleation pool type super-cooling boiling vapor bubble. Specifically, a sander is used to sand the container bottom wall 100 of the container body, so as to form a first groove 110 and a second groove 120.

In addition, the liquid heating device of some embodiments of this application is tested for noise, specifically the sound power curve test, and the main evaluation index is average noise decibel and maximum noise decibel. Particularly, in a silencing room, the sound power curve of the kettle is measured. As shown in fig. 2, by measuring the sound power curve, the average sound power and the maximum sound power of various texture structures were quantitatively analyzed, and the noise suppression effect of different surface texture structures was examined. In fig. 2, the uppermost acoustic power curve is the acoustic power curve of the liquid heating apparatus of the related art. And the three lowest acoustic power curves are the acoustic power curves of the liquid heating apparatus of some embodiments of the present application. As can be taken from fig. 2, the noise of the liquid heating apparatus of some embodiments of the present application is significantly reduced compared to the related art.

Experimental results have shown that by making a reasonable engraving of the bottom wall 100 of the container, the average noise of the liquid heating device can be reduced by about 4.5dB and the maximum noise by about 5.1 dB.

Table 1 shows average noise and maximum noise corresponding to the related art and the differently distributed first and second grooves 110 and 120.

	Average noise (dB)	Maximum noise (dB)
			Prior Art	61.84	67.22
Texture 1	60.59	66.00
			Texture 2	62.07	66.88
Texture 3	58.45	62.49
			Texture 4	58.84	62.24
Texture 5	57.29	62.12

Among them, the texture 5 is a scheme in which the first grooves 110 have a plurality of annular grooves, and the second grooves 120 extend in the shape of a sine wave. It is clear that the maximum noise can be reduced by at least about 5dB, and the average noise can be reduced by about 4dB, resulting in a good noise reduction effect.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A liquid heating apparatus, comprising:

a container body including a container bottom wall;

the first groove is arranged on the inner surface of the bottom wall of the container;

the second groove is arranged on the inner surface of the bottom wall of the container;

the first grooves and the second grooves are distributed in a crossed mode, and the first grooves and the second grooves are used for polymerizing small bubbles to form large bubbles.

2. Liquid heating device according to claim 1,

the first groove extends circumferentially about a centerline of the container bottom wall;

at least a portion of the second groove extends away from a centerline of the container bottom wall.

3. Liquid heating device according to claim 1,

the first groove comprises a plurality of annular grooves, and the inner diameters of the annular grooves are different;

in any two annular grooves, the annular groove with the larger inner diameter is surrounded on the periphery of the annular groove with the smaller inner diameter.

4. Liquid heating device according to claim 3,

the outer diameter of the annular grooves far away from the central line of the bottom wall of the container in the plurality of annular grooves ranges from 92mm to 110 mm; and/or

The distance between two adjacent annular grooves ranges from 1mm to 2 mm.

5. Liquid heating device according to claim 1,

the second grooves extend in a sinusoidal wave pattern and are circumferentially distributed around a centerline of the container bottom wall.

6. Liquid heating device according to claim 5,

the second groove comprises a plurality of wave crest portions, and the distance between every two adjacent wave crest portions ranges from 0.5mm to 2 mm.

7. Liquid heating device according to claim 1,

the second groove comprises a plurality of sub-grooves, and each sub-groove extends in a V shape;

the plurality of sub-grooves are circumferentially distributed around the center line of the bottom wall of the container, and the V-shaped end parts of any two adjacent sub-grooves are mutually communicated.

8. Liquid heating device according to claim 7,

the distance between the V-shaped tips of two adjacent sub-grooves ranges from 0.5mm to 2 mm.

9. Liquid heating device according to any one of claims 2 to 8,

a first area is formed between the edge of the first groove close to the center line of the bottom wall of the container and the edge far away from the center line of the bottom wall of the container;

the second groove extends within the first region.

10. Liquid heating device according to claim 9,

the distance between the edge of the first groove close to the central line of the bottom wall of the container and the edge far away from the central line of the bottom wall of the container ranges from 14mm to 18 mm.

11. Liquid heating device according to any one of claims 1 to 8,

the width of the notch of the first groove ranges from 0.3mm to 0.7 mm; and/or

The width of the notch of the second groove ranges from 0.3mm to 0.7 mm; and/or

The groove depth of the first groove ranges from 0.1mm to 0.4 mm; and/or

The groove depth of the second groove ranges from 0.1mm to 0.4 mm; and/or

The inner surface of the groove bottom wall of the first groove is an arc surface, and the inner surface of the groove bottom wall of the second groove is an arc surface.

12. Liquid heating device according to any one of claims 1 to 8, further comprising: the heating element is arranged on the outer surface of the bottom wall of the container or below the bottom wall of the container, and the projection area of the heating element on the inner surface of the bottom wall of the container is a heating area;

the first groove and the second groove are arranged in the heating area.

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