A liquid heater

Abstract

The utility model belongs to the technical field of liquid heating devices, and discloses a liquid heater, including a kettle body and a heating element, wherein the kettle body includes a kettle body and a kettle bottom, and the kettle bottom includes a horizontal wall extending horizontally from the center to the outside and an arc-shaped wall connecting the outer end of the horizontal wall with the kettle body, wherein the arc-shaped wall is formed by an arc line rotating around the center line of the kettle body, and the connecting line of the two ends of the arc line relative to the vertical line where the top of the arc line is located has an inclination angle d, d<45°, and the arc line is divided into a first arc segment, a second arc segment and a third arc segment which are connected in sequence smoothly from the outside to the center, and the inclination angles of the chords corresponding to the first arc segment, the second arc segment and the third arc segment relative to the vertical line are a, b and c respectively, satisfying a<b<c. ​​The liquid heating device optimizes the kettle bottom structure, and on the basis of reducing the working noise, enables the user's fingers to fit more closely with the inner wall of the kettle during hand washing, thereby increasing the fitting area between the fingers and the inner wall, thereby realizing more labor-saving and time-saving hand washing, and improving the cleaning effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid heating devices, and in particular relates to a liquid heater. Background Art

[0002] The bottom wall of a conventional liquid heater is mostly horizontal, and the electric heating plate is installed on the bottom surface of the horizontal bottom wall to directly heat the horizontal bottom wall, thereby heating the water in the liquid heater. The electric heating plate is mostly in a surrounding shape, so only the annular electric heating tube contact area in the horizontal bottom wall is concentratedly heated, and the generated bubbles are small and dense, and the small bubbles are easy to break away from the horizontal bottom wall, generating a lot of noise.

[0003] The Chinese patent application number CN201710057447.6 discloses an electric kettle, including a hot plate assembly and a kettle bottom wall, wherein the kettle bottom wall includes a central disc portion and an outer ring portion, wherein the top surface of the outer ring portion is formed as an upslope surface radially outward, and the upslope surface is an inclined plane or an arc inclined surface. Compared with the traditional horizontal kettle bottom wall solution, this patent effectively avoids the phenomenon of small and dense local bubbles and achieves the effect of noise reduction.

[0004] However, in this solution, since the bottom wall of the pot is sloped, when the slope or curvature is too small, the noise reduction effect is not ideal, and a large turning angle is formed at the connection position between the outer ring part and the side wall of the pot, resulting in a cleaning dead angle. The user's fingers cannot fit well with this position during hand washing, making cleaning difficult and time-consuming; and when the slope or curvature is too large, a large turning angle will occur at the connection position between the outer ring part and the disc part, resulting in a cleaning dead angle. When the user washes by hand, the finger can only be folded outward at a limited angle, so the connection position cannot fit well with the finger and cannot be effectively cleaned, making cleaning difficult and time-consuming. Therefore, the user needs to constantly adjust the position of the palm during cleaning, perform multiple cleanings, and even need to use cleaning tools to complete the cleaning, which is time-consuming and laborious. Utility Model Content

[0005] The utility model provides a liquid heater which, by optimizing the bottom structure of the pot, solves the problem of high working noise in traditional liquid heaters and further solves the technical problem of time-consuming and labor-intensive washing of the liquid heater by users.

[0006] The technical solution adopted by the utility model is:

[0007] The utility model provides a liquid heater, comprising a kettle body and a heating element, wherein the kettle body comprises a kettle body and a kettle bottom, the kettle bottom comprises a horizontal wall extending horizontally outward from the center and an arc-shaped wall connecting the outer end of the horizontal wall with the kettle body, the arc-shaped wall is formed by an arc line rotating around the center line of the kettle body, the inclination angle of the connecting line of the two ends of the arc line relative to the vertical line where the top of the arc line is located is d, d<45°, the arc line is divided into a first arc segment, a second arc segment and a third arc segment which are smoothly connected in sequence from the outside to the center, the inclination angles of the chords corresponding to the first arc segment, the second arc segment and the third arc segment relative to the vertical line are a, b and c respectively, satisfying a<b<c.

[0008] The utility model provides a liquid heater, which is characterized in that the bottom of the kettle is set to have a horizontal wall and an arc-shaped wall, and the arc-shaped wall extends upward and outward from the horizontal wall, so it is not easy to generate scale. Moreover, when the heating element is fixed on the outside of the arc-shaped wall, during the heating process, small bubbles generated on the arc-shaped wall merge to form slightly larger bubbles, and guide the bubbles to move upward rapidly. The bubbles reach the water surface along the kettle body and burst, and avoid bursting in the water, which is conducive to reducing the noise of bubble bursting and has a noise reduction effect. On this basis, during the cleaning process, the user usually extends his fingers vertically into the kettle to clean the inner wall. Therefore, the inclination angle of the connecting line of the two ends of the arc forming the arc-shaped wall relative to the vertical line where the top of the arc is located is d, and d<45°, which is equivalent to making the vertical extension height of the arc-shaped wall greater than the horizontal extension distance of the arc-shaped wall, thereby pulling the arc-shaped wall higher to make full use of the length of the fingers vertically inserted into the kettle, so that the fingers can touch the inner wall. There is a larger contact area, and cleaning is more labor-saving; at the same time, according to the three joints of the user's fingers, in order to increase the contact area between the fingers and the inner wall, the fingers are folded outward along the bending shape of the arc wall according to habit, and the closer the joints are to the fingertips, the greater the outward folding angle. Therefore, the arc is divided into a first arc segment, a second arc segment and a third arc segment that are smoothly connected in sequence from the outside to the center. On the one hand, compared with the use of a straight line segment, it avoids excessive cleaning dead corners and facilitates cleaning. On the other hand, the inclination angles of the chords corresponding to the first arc segment, the second arc segment and the third arc segment relative to the vertical line are a, b, and c, respectively, satisfying a<b<c, that is, the inclination degree of the arc wall from the outside to the inside is matched according to the physiological bending degree of each joint of the user's fingers, thereby reducing the distance between the user's fingers and the inner wall, so that the fingers and the inner wall fit better and the cleaning area is larger, which is conducive to quick and thorough cleaning. In addition, by arranging the arc wall in segments, the arc wall can be well combined with the kettle body and the horizontal wall at the same time, reducing the bending angle and the cleaning dead angle, thereby improving the cleaning effect.

[0009] In a preferred embodiment, the arc length is L0, 75mm≤L0≤80mm.

[0010] In general, the middle fingers of users are longer, the length of an adult's middle finger is generally between 75-80 mm. Therefore, after the size of the horizontal wall at the bottom of the kettle is determined, by setting the total arc length within this range, the arc wall can have enough area to install the heating element, while achieving an effective noise reduction effect. At the same time, the area of ​​the arc wall can be controlled reasonably, making it convenient for users to wash their hands quickly and thoroughly.

[0011] In a preferred embodiment, the maximum distance between the first arc segment, the second arc segment or the third arc segment and the corresponding chord length is H, satisfying H≤2mm.

[0012] By controlling the maximum distance between the first arc segment, the second arc segment or the third arc segment and its corresponding chord length within 2 mm, the gap between the user's fingers and the inner wall does not exceed 2 mm during hand washing, thereby avoiding the situation where the gap is too large and the part cannot be cleaned. The user's fingers and the inner wall of the liquid heater fit well, or the user can use the fingers to stir the water flow to thoroughly clean the inner wall, which saves time and effort in cleaning.

[0013] In a preferred embodiment, 0<a<8°; or, 8°≤b<20°; or, 20°≤c<32°.

[0014] According to the physiological limitations of the outward bending angle of an average adult's fingers, the outward folding angles of the first joint close to the palm, the second joint in the middle and the third joint at the fingertips will gradually increase. By 0<a<8°, 8°≤b<20°; 20°≤c<32°, the curvature of each segment of the arc-shaped wall can be matched with the curvature of the user's joints, so that during the user's hand washing process, the fit between the fingers and the inner wall can be improved, and the distance between the fingers and the inner wall can be reduced, thereby improving the cleaning effect.

[0015] In a preferred embodiment, the arc lengths corresponding to the first arc segment, the second arc segment and the third arc segment are L1, L2, L3 respectively, satisfying L1:L2:L3=4:5:5.

[0016] According to the characteristics of the middle finger of an average adult, the length ratio of the first joint close to the palm, the second joint in the middle and the third joint at the fingertip is approximately 4:5:5. Therefore, the arc lengths corresponding to the first arc segment, the second arc segment and the third arc segment forming the arc-shaped wall satisfy the above-mentioned L1:L2:L3=4:5:5, which can improve the fit between the finger and the inner wall in the vertical height and improve the hand washing effect.

[0017] In a preferred embodiment, the heating element is arranged around the outer side of the third arc segment.

[0018] By setting the heating element on the outside of the third arc segment, heating from bottom to top is achieved. Under the buoyancy of the bubbles, the bubbles are guided to slide rapidly upward along the inner wall corresponding to the third arc segment from bottom to top, so that small bubbles merge into slightly larger bubbles. Large bubbles are not easy to burst in the water, thereby effectively avoiding the phenomenon of small and dense local bubbles and achieving the effect of noise reduction.

[0019] In a preferred embodiment, the liquid heater further comprises a handle, the upper portion of the handle is fixedly connected to the kettle body, and the lower portion of the handle is fixedly connected to the outer side of the first arc segment.

[0020] By providing a handle, it is convenient for users to take the liquid heater, and it is flexible and labor-saving to use. The upper and lower parts of the handle are respectively fixed outside the kettle body and the first arc segment of the arc-shaped wall. The handle also serves to strengthen the reliability of the connection between the kettle body and the bottom of the kettle, and the structure is reliable.

[0021] In a preferred embodiment, the pot body and the pot bottom are integrally formed.

[0022] The kettle body and kettle bottom are formed in one piece to avoid gaps between the kettle body and kettle bottom, reduce the trouble of subsequent docking, simplify production and ensure a sealed connection between the kettle body and kettle bottom.

[0023] In a preferred embodiment, the pot body and the pot bottom are separately provided, the bottom end of the pot body is welded to the top end of the arc-shaped wall, and the inner diameter of the bottom end of the pot body is the same as the inner diameter of the top end of the arc-shaped wall for a smooth connection.

[0024] By setting the pot body and the pot bottom separately, the difficulty of forming is reduced. The inner diameter of the bottom end of the pot body is the same as the inner diameter of the top end of the arc wall to achieve a smooth connection, avoiding a dead corner for residue accumulation at the connection between the pot body and the pot bottom, thereby facilitating thorough cleaning.

[0025] In a preferred embodiment, the wall thicknesses of the kettle body and the arc-shaped wall at the welding point are different to form a step on the outer side.

[0026] The wall thickness of the pot body and the curved wall at the welding point are different to form a step on the outside. The step can reduce the alignment accuracy requirement between the pot body and the pot bottom. Even if the pot body and the pot bottom are accidentally bumped and deformed, the step surface can be used to eliminate the size difference caused by the deformation, thereby ensuring reliable alignment of the two and avoiding the generation of gaps, reducing the difficulty of alignment, and ensuring the reliability of welding. The step surface faces upward to facilitate the retention of welding liquid during welding, further ensuring the welding reliability of the weld position. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0028] Figure 1 This is a schematic cross-sectional structure diagram of a liquid heater in one embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of a kettle body in one embodiment of the utility model;

[0030] Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.

[0031] Description of reference numerals:

[0032] 10. Pot body; 11. Pot body; 12. Pot bottom; 121. Horizontal wall; 122. Arc wall; 123. First arc segment; 124. Second arc segment; 125. Third arc segment; 20. Heating element; 30. Step; 40. Handle; 50. Finger. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present invention and the features in each embodiment may be combined with each other without conflict.

[0035] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0038] like Figure 1-3 As shown, the utility model provides a liquid heater in one embodiment, specifically an electric kettle, including a kettle body 10 and a heating element 20, the kettle body 10 includes a kettle body 11 and a kettle bottom 12, the kettle bottom 12 includes a horizontal wall 121 extending horizontally outward from the center and an arc wall 122 connecting the outer end of the horizontal wall 121 with the kettle body 11, as shown in FIG. Figure 2 As shown, the arc wall 122 is formed by an arc line rotating around the center line of the kettle body 10, and the inclination angle of the connecting line of the two ends of the arc line relative to the vertical line where the top of the arc line is located is d, d < 45°, as shown in FIG. Figure 3 As shown, the arc is divided from the outside to the center into a first arc segment 123, a second arc segment 124 and a third arc segment 125 which are smoothly connected in sequence. The inclination angles of the chords corresponding to the first arc segment 123, the second arc segment 124 and the third arc segment 125 relative to the vertical line are a, b and c respectively, satisfying a<b<c.

[0039] Combination Figure 1-3The utility model provides a liquid heater, by setting the bottom 12 of the pot as a horizontal wall 121 and an arc-shaped wall 122, the arc-shaped wall 122 extends upward and outward from the horizontal wall 121, and it is not easy to generate scale. Moreover, when the heating element 20 is fixed on the outer side of the arc-shaped wall 122, during the heating process, the small bubbles generated on the arc-shaped wall 122 merge to form slightly larger bubbles, and guide the bubbles to move upward quickly. The bubbles reach the water surface along the pot body 11 and burst, and avoid bursting in the water, which is conducive to reducing the noise of bubble bursting and has a noise reduction effect. On this basis, during the cleaning process, the user usually extends the finger 50 vertically into the pot to clean the inner wall. Therefore, the inclination angle of the connecting line of the two ends of the arc forming the arc-shaped wall 122 relative to the vertical line where the top of the arc is located is d, d < 45°, which is equivalent to making the vertical extension height of the arc-shaped wall 122 greater than the horizontal extension distance of the arc-shaped wall 122, thereby pulling the arc-shaped wall 122 higher to make full use of the length of the finger vertically inserted into the pot. This allows the fingers to have a larger contact area with the inner wall, making cleaning more labor-saving; at the same time, according to the three joints of the user's fingers, in order to increase the contact area between the fingers and the inner wall, the fingers are folded outward along the bending shape of the arc wall 122 according to habit, and the closer the joint is to the fingertips, the greater the angle of the outward folding. Therefore, the arc is divided into a first arc segment 123, a second arc segment 124 and a third arc segment 125, which are smoothly connected in sequence from the outside to the center. On the one hand, compared with the use of a straight line segment, it avoids excessive cleaning dead corners and facilitates cleaning. On the other hand, the inclination angles of the chords corresponding to the first arc segment 123, the second arc segment 124 and the third arc segment 125 relative to the vertical line are a, b, and c, respectively, satisfying a<b<c, that is, the inclination degree of the arc wall 122 from the outside to the inside is matched according to the physiological bending degree of each joint of the user's fingers, thereby reducing the distance between the user's fingers and the inner wall, making the fingers fit more closely to the inner wall and the cleaning area larger, thereby facilitating quick and thorough cleaning.

[0040] It should be noted that there is an angle difference in the chord length among the first arc segment 123, the second arc segment 124 and the third arc segment 125, so that the curvature of the first arc segment and the second arc segment changes, and the curvature of the second arc segment and the third arc segment changes. The point where the curvature of the arc changes is used as the dividing point between the first arc segment and the second arc segment and the dividing point between the second arc segment and the third arc segment.

[0041] In a preferred embodiment, the arc length is L0, satisfying 75 mm ≤ L0 ≤ 80 mm.

[0042] In general, the middle fingers of users are longer, the length of an adult's middle finger is generally between 75 and 80 mm. Therefore, after the size of the horizontal wall 121 of the bottom 12 of the pot is determined, by setting the total arc length of the arc within this range, the arc wall 122 can have enough area to install the heating element 20, while achieving an effective noise reduction effect. At the same time, the area of ​​the arc wall 122 can be controlled to be reasonable, which is convenient for users to wash hands quickly and thoroughly.

[0043] In a preferred embodiment, the maximum distance between the first arc segment 123, the second arc segment 124 or the third arc segment 125 and the corresponding chord length is H, satisfying H≤2 mm.

[0044] By controlling the maximum distance between the first arc segment 123, the second arc segment 124 or the third arc segment 125 and its corresponding chord length within 2 mm, the gap between the user's fingers and the inner wall during hand washing does not exceed 2 mm, thereby avoiding the situation where the gap is too large and the part cannot be cleaned, so that the user's fingers and the inner wall of the liquid heater fit well, or use the fingers to stir the water flow to thoroughly clean the inner wall, which saves time and effort. Of course, in order to further improve the cleaning effect, the inner wall can be wiped with a cleaning cloth to fill the gap between the fingers and the inner wall.

[0045] In a preferred embodiment, 0<a<8°; or, 8°≤b<20°; or, 20°≤c<32°.

[0046] According to the physiological limitations of the outward bending angle of an average adult's fingers, the outward folding angles of the first joint close to the palm, the second joint in the middle and the third joint at the fingertips will gradually increase. By 0<a<8°, 8°≤b<20°; 20°≤c<32°, the curvature of each section of the arc-shaped wall 122 can be matched with the curvature of the user's joints, so that during the user's hand washing process, the fit between the fingers and the inner wall can be improved, and the distance between the fingers and the inner wall can be reduced, thereby improving the cleaning effect.

[0047] Of course, the fingertips of the user's fingers are more flexible in bending. Therefore, in fact, the user can flexibly clean by folding the fingers outward and inward during the cleaning process. Therefore, considering that the fingers can bend inward to clean the curved wall, for the third arc segment, in its preferred embodiment, 20°≤c≤45° can be optionally satisfied, for example, c=40°.

[0048] In a preferred embodiment, the arc lengths corresponding to the first arc segment 123 , the second arc segment 124 and the third arc segment 125 are L1 , L2 and L3 respectively, satisfying L1 : L2 : L3 = 4 : 5 : 5.

[0049] According to the characteristics of the middle finger of an average adult, the length ratio of the first joint close to the palm, the second joint in the middle and the third joint at the fingertip is approximately 4:5:5. Therefore, the arc lengths corresponding to the first arc segment 123, the second arc segment 124 and the third arc segment 125 forming the arc wall 122 satisfy the above-mentioned L1:L2:L3=4:5:5, which can improve the fit between the finger and the inner wall in the vertical height, thereby improving the hand washing effect.

[0050] The present invention does not limit the installation position of the heating element. For example, in a preferred embodiment, the heating element 20 is arranged around the outside of the third arc segment 125 .

[0051] By setting the heating element 20 on the outside of the third arc segment 125, heating from bottom to top is achieved. Under the buoyancy of the bubbles, the bubbles are guided to slide rapidly upward along the inner wall corresponding to the third arc segment 125 from bottom to top, so that small bubbles merge into slightly larger bubbles. The large bubbles are not easy to burst in the water, thereby effectively avoiding the phenomenon of small and dense local bubbles and achieving the effect of noise reduction.

[0052] Of course, it is understandable that the heating element can be arranged on the outer side of the arc wall. More preferably, a temperature detection element is installed on the outer side of the horizontal wall to timely cut off the power or adjust the power according to the detected temperature, thereby preventing abnormal situations such as dry burning and overflow, and ensuring reliable use. Compared with installing it outside the arc wall, the temperature detection element installed on the horizontal wall is easier to position, thereby improving the detection accuracy and reliability.

[0053] In a preferred embodiment, the liquid heater further comprises a handle 40, the upper portion of which is fixedly connected to the kettle body 11, and the lower portion of which is fixedly connected to the outer side of the first arc segment 123. For example, the upper portion of the handle is optionally hooked to the upper port of the kettle body, eliminating the operation of screwing the kettle body, and the lower end is fixed to the outer side of the first arc segment by screws, thereby achieving reliable fixation and improving the reliable connection of the overall structure.

[0054] By setting the handle 40, it is convenient for users to take the liquid heater, and it is flexible and labor-saving to use. The upper and lower parts of the handle 40 are respectively fixed to the kettle body 11 and the first arc segment 123 of the arc wall 122. The handle 40 also plays a role in strengthening the connection reliability between the kettle body 11 and the kettle bottom 12, and the structure is reliable.

[0055] The present invention does not limit the connection method between the kettle body and the kettle bottom, for example:

[0056] In a preferred embodiment, the pot body 11 and the pot bottom 12 are integrally formed.

[0057] The kettle body 11 and the kettle body 10 are integrally formed to avoid a connection gap between the kettle body 11 and the kettle bottom 12 and reduce the trouble of subsequent docking, thereby simplifying production and ensuring a sealed connection between the kettle body 11 and the kettle bottom 12.

[0058] In another preferred embodiment, the kettle body 11 and the kettle bottom 12 are separately provided, the bottom end of the kettle body 11 is welded to the top end of the arc-shaped wall 122, and the inner diameter of the bottom end of the kettle body 11 is the same as the inner diameter of the top end of the arc-shaped wall 122 for smooth connection. More preferably, the kettle body 11 and the arc-shaped wall 122 have different wall thicknesses at the welding point to form a step 30 on the outside.

[0059] By setting the pot body 11 and the pot bottom 12 separately, the difficulty of forming is reduced. The inner diameter of the bottom end of the pot body 11 is the same as the inner diameter of the top end of the arc-shaped wall 122 to be smoothly connected, avoiding the dead corner of slag hiding at the connection position between the pot body 11 and the pot bottom 12, and facilitating thorough cleaning. The wall thickness of the pot body 11 and the arc-shaped wall 122 at the welding point is different to form a step 30 on the outside. The step 30 can reduce the alignment accuracy requirements between the pot body 11 and the pot bottom 12. Even if the pot body 11 and the pot bottom 12 are accidentally bumped and deformed, the step surface of the step 30 is used to eliminate the size difference caused by the deformation, and the reliable alignment of the two can still be ensured and the generation of gaps can be avoided, thereby reducing the difficulty of alignment and ensuring the reliability of welding. The step surface is facing upward to facilitate the retention of welding liquid during welding, further ensuring the welding reliability of the weld position.

[0060] Of course, more preferably, the thickness of the pot body 11 is greater than the thickness of the arc-shaped wall 122, so that the step surface of the step 30 is set downward. When welding, the pot body 11 can be inverted, and the arc bottom is buckled on the pot body 11, so that the step surface is upward to facilitate the retention of welding liquid during welding, further ensuring the welding reliability of the weld position. The step 30 is formed by the pot body 11 being thicker than the arc-shaped wall 122, which can reduce the influence of the thickening of the pot bottom 12 on the heat transfer efficiency, ensure the reliable heat transfer of the pot bottom 12, and ensure the heating efficiency on the basis of reliable welding. Of course, in other embodiments, the step 30 can be formed by making the thickness of the arc-shaped wall 122 greater than the thickness of the pot body 11.

[0061] In addition, the form of the liquid heater in the utility model is not limited to an electric kettle. In fact, in other embodiments, the liquid heater may optionally be a soymilk maker, which also includes a head fixed above the kettle body 10, a motor is arranged inside the head, and a crushing knife driven by the motor is arranged at the front end of the head, and the crushing knife extends into the kettle body 10.

[0062] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0063] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0064] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A liquid heater, comprising a kettle body and a heating element, wherein the kettle body comprises a kettle body and a kettle bottom, characterized in that: The bottom of the pot includes a horizontal wall extending horizontally outward from the center and a curved wall connecting the outer end of the horizontal wall to the pot body, the curved wall is formed by an arc line rotating around the center line of the pot body, the inclination angle of the line connecting the two ends of the arc line relative to the vertical line where the top of the arc line is located is d, d<45°, the arc line is divided into a first arc segment, a second arc segment and a third arc segment which are smoothly connected in sequence from the outside to the center, the inclination angles of the chords corresponding to the first arc segment, the second arc segment and the third arc segment relative to the vertical line are a, b, c respectively, satisfying a<b<c.

2. A liquid heater according to claim 1, characterized in that: The arc length is L0, which satisfies 75mm≤L0≤80mm.

3. A liquid heater according to claim 1, characterized in that: The maximum distance between the first arc segment, the second arc segment or the third arc segment and the corresponding chord length is H, satisfying H≤2mm.

4. A liquid heater according to claim 1, characterized in that: 0<a<8°; or, 8°≤b<20°; or, 20°≤c<32°.

5. A liquid heater according to claim 1, characterized in that: The arc lengths corresponding to the first arc segment, the second arc segment and the third arc segment are L1, L2, and L3 respectively, satisfying L1:L2:L3=4:5:

5.

6. A liquid heater according to any one of claims 1 to 5, characterized in that: The heating element is disposed around the outer side of the third arc segment.

7. A liquid heater according to any one of claims 1 to 5, characterized in that: The liquid heater also includes a handle, the upper portion of which is fixedly connected to the kettle body, and the lower portion of which is fixedly connected to the outer side of the first arc segment.

8. The liquid heater according to claim 1, characterized in that: The pot body and the pot bottom are integrally formed.

9. The liquid heater according to claim 1, characterized in that: The pot body and the pot bottom are separately arranged, the bottom end of the pot body is welded to the top end of the arc-shaped wall, and the inner diameter of the bottom end of the pot body is the same as the inner diameter of the top end of the arc-shaped wall to be smoothly connected.

10. A liquid heater according to claim 9, characterized in that: The wall thickness of the pot body and the arc-shaped wall at the welding position is different to form a step on the outer side.

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