CN108784334B - Electric kettle - Google Patents
Electric kettle Download PDFInfo
- Publication number
- CN108784334B CN108784334B CN201710282727.7A CN201710282727A CN108784334B CN 108784334 B CN108784334 B CN 108784334B CN 201710282727 A CN201710282727 A CN 201710282727A CN 108784334 B CN108784334 B CN 108784334B
- Authority
- CN
- China
- Prior art keywords
- kettle
- wall
- bottom wall
- peripheral wall
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
- A47J27/21041—Water-boiling vessels, e.g. kettles electrically heated with heating elements arranged outside the water vessel
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
- Thermally Insulated Containers For Foods (AREA)
Abstract
The invention discloses an electric kettle, which comprises a kettle bottom wall (1) and a kettle body (2), wherein the thickness of the kettle bottom wall is larger than that of the kettle body, the difference of the thickness values is not less than 0.5mm and not more than 5mm, the kettle bottom wall is disc-shaped, the outer peripheral wall of the kettle bottom wall comprises an inclined lapping wall which is inclined downwards and outwards, an inclined lapping end which is inclined downwards and outwards is correspondingly formed at the bottom end of the kettle body, and the inclined lapping end is abutted against the inclined lapping wall and is welded in a sealing mode. In the electric kettle, the inclined lapping wall is formed on the outer peripheral wall of the kettle bottom wall by thickening the kettle bottom wall, the inclined lapping end is correspondingly formed at the bottom end of the kettle body, and the inclined lapping end is abutted against the inclined lapping wall and is welded in a sealing manner, so that the transverse heating uniformity of the kettle bottom wall is facilitated, the remarkable noise reduction effect is achieved, the manufacturing process of the sealing connection structure of the kettle body and the thickened kettle bottom wall is simple, and the sealing welding operation of operators is facilitated.
Description
Technical Field
The invention belongs to the field of household appliances, and particularly relates to an electric kettle.
Background
The kettle body of the conventional electric kettle mainly comprises a kettle cover, a kettle body and a kettle bottom wall, wherein an electric heating pipe is arranged on the bottom surface of the kettle bottom wall and used for directly heating the kettle bottom wall so as to heat liquid water in the electric kettle. In addition, the kettle body and the kettle bottom wall mostly have equivalent thickness, and two sealing connection modes are generally adopted for the kettle body and the kettle bottom wall, namely, the bottom periphery of the kettle body and the periphery of the kettle bottom wall are in crimping sealing connection or butt welding sealing connection.
The electric heating tube in the electric kettle conducts heat to the bottom wall of the kettle in a contact heat conduction mode, the heating area is small, the heating effect of the contact area far away from the electric heating tube is poor, and the local heating is obvious. Therefore, when the electric kettle works, the steam bubbles at the bottom of the kettle are uneven, and local steam bubbles are dense and grow up, so that the bubbles are broken, and larger noise is generated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the electric kettle which has the advantages of obvious noise reduction effect, simple manufacturing process and convenience in operation.
In order to achieve the purpose, the invention provides an electric kettle which comprises a kettle bottom wall and a kettle body, wherein the thickness of the kettle bottom wall is larger than that of the kettle body, the difference of the thickness values is not smaller than 0.5mm and not larger than 5mm, the thickness of the kettle bottom wall is not smaller than 1mm and not larger than 5mm, the kettle bottom wall is in a disc shape, the outer peripheral wall of the kettle bottom wall comprises an inclined lapping wall which inclines downwards and outwards, the bottom end of the kettle body is correspondingly formed with an inclined lapping end which inclines downwards and outwards, and the inclined lapping end butts against the inclined lapping wall and is welded in a sealing mode.
Preferably, the inner inclined wall of the inclined lap end has the same inclination angle as the inclined lap wall, and the inner inclined wall of the inclined lap end is attached to the inclined lap wall.
Preferably, the bottom end face of the inclined lapping end is flush with the bottom wall face of the kettle bottom wall, and a sealing welding seam is formed between the bottom end face and the bottom wall face.
Preferably, the outer peripheral wall of the kettle bottom wall includes a vertical upper peripheral wall extending vertically downward from the top wall surface of the kettle bottom wall and the inclined overlapping wall inclined downward from the vertical upper peripheral wall, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body.
Preferably, the outer peripheral wall of the kettle bottom wall comprises the inclined lapping wall inclined downwards from the top wall surface of the kettle bottom wall and a vertical lower peripheral wall vertically extending downwards from the bottom end of the inclined lapping wall to the bottom wall surface of the kettle bottom wall, and a sealing welding seam is formed between the bottom end surface of the inclined lapping end and the vertical lower peripheral wall.
Preferably, the top end of the inclined overlapping end abuts against the inclined overlapping wall, an included angle gap is formed between the inclined overlapping wall and the inner inclined wall of the inclined overlapping end, and a sealing welding seam is filled in the included angle gap.
Preferably, the outer peripheral wall of the kettle bottom wall includes a vertical upper peripheral wall extending vertically downward from the top wall surface of the kettle bottom wall and the inclined overlapping wall inclined downward from the vertical upper peripheral wall, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body.
Preferably, the vertical height of the vertical upper peripheral wall is greater than 0mm and not greater than 1 mm.
Preferably, the thickness of the kettle body is not less than 0.4mm and not more than 0.8 mm.
Preferably, the electric kettle further comprises a heating element arranged below the kettle bottom wall, a base plate is further arranged between the heating element and the kettle bottom wall, and the base plate is a high-thermal-conductivity metal plate with a thermal conductivity not less than 100W/m-k.
Preferably, the outer periphery of the base plate is aligned with or beyond the outer periphery of the bottom wall of the kettle, and the vertical projection area of the heating element towards the bottom wall surface of the bottom wall of the kettle is located in the vertical projection area of the base plate towards the bottom wall surface of the bottom wall of the kettle.
Through the technical scheme, in the electric kettle, the thickness of the kettle bottom wall is larger than that of the kettle body, the difference of the thickness values is not less than 0.5mm and not more than 5mm, the kettle bottom wall is disc-shaped, the outer peripheral wall of the kettle bottom wall comprises the inclined lapping wall which is inclined downwards and outwards, and the inclined lapping end which is inclined downwards and outwards is correspondingly formed at the bottom end of the kettle body, so that the heat conduction along the thickness direction of the kettle bottom wall is slowed down, the transverse heating area of the kettle bottom wall is increased, the transverse heating uniformity of the kettle bottom wall is facilitated, the aim of uniformly heating the kettle bottom wall is fulfilled, the phenomenon that local bubbles of the thermal contact area on the kettle bottom wall are dense can be effectively avoided, and the remarkable noise reduction effect is achieved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an overall sectional view of an electric kettle according to a first preferred embodiment of the present invention;
fig. 2 is an overall sectional view of an electric kettle according to a second preferred embodiment of the present invention;
fig. 3 is an overall sectional view of an electric kettle according to a third preferred embodiment of the present invention;
fig. 4 is an overall sectional view of an electric kettle according to a fourth preferred embodiment of the present invention;
fig. 5 is an overall sectional view of an electric kettle according to a fifth preferred embodiment of the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 1;
FIG. 7 is an enlarged view of portion B of FIG. 2;
FIG. 8 is an enlarged view of portion C of FIG. 3;
FIG. 9 is an enlarged view of portion D of FIG. 4;
FIG. 10 is an enlarged view of section E of FIG. 5;
FIG. 11 is an overall cross-sectional view of a prior art electric kettle wherein the body and the bottom wall are sealingly connected by a bead;
FIG. 12 is an overall cross-sectional view of a prior art electric kettle wherein the body and bottom wall are sealingly joined by butt welding;
FIG. 13 is an enlarged view of portion F of FIG. 11;
FIG. 14 is an enlarged view of portion G of FIG. 12;
FIG. 15 is a structural view of a thickened kettle bottom wall of the present invention wherein the kettle bottom wall is of a multi-layer metal plate construction;
fig. 16 is an overall sectional view of an electric kettle according to a sixth preferred embodiment of the present invention;
fig. 17 is an overall sectional view of an electric kettle according to a seventh preferred embodiment of the present invention;
FIG. 18 is an enlarged view of portion H of FIG. 16;
fig. 19 is an enlarged view of a portion I in fig. 17.
Description of reference numerals:
1 kettle bottom wall 5 outer casing
2 kettle body 6 handle
3 pot lid 7 steam pipe
4 heating element 8 substrate
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the invention provides an electric kettle, which comprises a kettle bottom wall 1, a kettle body 2 and a kettle cover 3, wherein the kettle bottom wall 1 forms a kettle body, a heating element 4 used for heating liquid in the kettle is arranged below the kettle bottom wall 1, a shell 5 is arranged around the outer side of the kettle body, a handle 6 is connected onto the shell 5, a steam pipe 7 is arranged in the kettle body and the handle 6 or between the kettle body and the shell 5, a temperature controller is arranged at the bottom of the kettle body, steam in the kettle body is guided to the temperature controller by the steam pipe 7, when the temperature controller detects that the temperature of the steam reaches a preset value, the power supply of the heating element 4 is disconnected through the deformation of a bimetallic strip, or a temperature sensor is arranged on the kettle body, and when the temperature sensor detects that the temperature in.
At present, the kettle bottom wall 1 and the kettle body 2 forming the kettle body mostly have equivalent thicknesses, and there are two general ways of sealing and connecting the kettle bottom wall 1 and the kettle body 2, referring to fig. 11 to 14, that is, the bottom periphery of the kettle body 2 and the periphery of the kettle bottom wall 1 are sealed and connected in a curled edge manner, or the bottom end face of the kettle body 2 is attached to the peripheral wall of the kettle bottom wall 1 and is sealed and welded.
In current insulating pot, kettle diapire 1 is food level stainless steel, and the thickness of kettle diapire 1 is more between 0.4mm ~ 0.5mm, and the thickness that also has its kettle diapire 1 of some special insulating pot is 0.8mm certainly, and the thickness of kettle body 2 equals with the thickness of kettle diapire 1, and the electric plate is installed in the diapire face of horizontal kettle diapire 1, directly heats kettle diapire 1, and then heats the liquid water in the kettle. Wherein, the heat source of the electric heating disk comes from the electric heating pipe, the electric heating pipe conducts the heat of the electric heating disk to the kettle bottom wall 1 in a contact heat conduction mode, the heating area is small, and the heating effect of the contact area far away from the electric heating pipe is poor, so that the local heating is obvious. Therefore, when the electric kettle works, the bottom wall 1 of the kettle is heated unevenly, so that the phenomenon of local dense bubbles appears on the bottom wall 1 of the kettle, and larger noise is generated.
In order to heat the bottom wall 1 of the kettle more uniformly, thereby avoiding the phenomenon of local dense bubbles on the bottom wall 1 of the kettle and achieving the effect of noise reduction, referring to fig. 1, in the electric kettle of the invention, the thickness of the bottom wall 1 of the kettle is increased, namely the thickness of the kettle body is not less than 0.4mm and not more than 0.8mm, and the thickness of the bottom wall 1 of the kettle is not less than 1mm and not more than 5 mm. Specifically, increase the thickness of kettle diapire 1, heat transfer distance increases promptly, can slow down the heat conduction of heating element 4 along 1 thickness direction of kettle diapire, relative speed up along the horizontal heat diffusion of kettle diapire 1 to be favorable to the horizontal equilibrium of being heated of kettle diapire 1, and then realize heating kettle diapire 1's purpose uniformly, so can effectively avoid the intensive phenomenon of the local steam bubble of the hot contact zone on the kettle diapire 1, reach apparent noise reduction. Further, the kettle bottom wall 1 is made of food-grade stainless steel with the heat conductivity coefficient not larger than 60W/m.k, so that the heat conduction along the axial direction and the radial direction of the kettle bottom wall 1 can be effectively slowed down, the kettle bottom wall 1 is heated more uniformly, and the noise reduction is facilitated.
In addition, the kettle bottom wall 1 can be made of food-grade stainless steel with the thermal conductivity coefficient not more than 60W/m.k, and can also be made of a composite material plate with the thermal conductivity coefficient not more than 60W/m.k. The composite sheet may be of any suitable type, such as a multi-layer composite sheet structure or a hybrid blended structure, as long as it is a food grade stainless steel having a thermal conductivity of no more than 60W/m-k. Specifically, referring to fig. 15, the composite material plate is a laminated multilayer metal plate structure, the surface layer (i.e., the first layer of metal plate) of the kettle bottom wall 1 is a food-grade metal plate with a thickness of 0.4mm to 0.5mm, at least one layer of the other layers of metal plates except the first layer of metal plate in the multilayer metal plate structure in the kettle bottom wall 1 is a low thermal conductivity metal plate with a thermal conductivity of not more than 60W/m · k, the thickness of the low thermal conductivity metal plate should not be less than 0.5mm to not more than 4.6mm, and the total thickness of the kettle bottom wall 1 should be 1mm to 5 mm.
Specifically, the thickness of the kettle body 2 is not changed, and the thickness of the kettle bottom wall 1 is increased, so that the thickness difference exists between the kettle body 2 and the kettle bottom, and particularly, when the difference between the thickness values of the kettle bottom wall 1 and the kettle bottom is greater than or equal to 0.5mm, the kettle body 2 and the thickened kettle bottom wall 1 are hermetically connected in a curling manner, the situation that the kettle body 2 and the kettle bottom wall 1 are difficult to curl simultaneously can occur, the hermetic connection between the kettle body 2 and the kettle bottom wall 1 is not facilitated, and the yield is low. Further, when the difference between the thickness values of the bottom wall 1 and the bottom wall is not less than 1mm, the kettle body 2 and the bottom wall 1 cannot be rolled up at the same time, which is more disadvantageous for the sealing connection between the two. In addition, if the kettle body 2 and the thickened kettle bottom wall 1 are connected in a sealing mode in a butt welding mode, the thinner kettle body 2 is easy to deform in the butt welding process due to the thickness difference between the two, and the sealing welding between the two is also not facilitated.
In view of this, in order to make the kettle body 2 and the thickened kettle bottom wall 1 be connected in a sealing manner, and the manufacturing process is simple and convenient to operate, referring to fig. 1 and fig. 2, the electric kettle of the present invention comprises a kettle bottom wall 1 and a kettle body 2, wherein the thickness of the kettle bottom wall 1 is greater than the thickness of the kettle body 2, the difference between the thickness values of the two is not less than 0.5mm and not more than 5mm, the kettle bottom wall 1 is disc-shaped, the outer peripheral wall of the kettle bottom wall 1 comprises an inclined lapping wall which inclines downwards and outwards, and the bottom end of the kettle body 2 is correspondingly formed with an inclined lapping end which inclines downwards and outwards, so that the inclined lapping end can abut downwards on the inclined lapping wall and be connected in a sealing manner, the sealing connection structure of the kettle body 2 and the kettle bottom wall 1 is simple in manufacturing process, and an operator can perform sealing welding operation on the kettle body 2 and the thickened kettle bottom wall 1, and the pot body 2.
Wherein, the larger the difference between the thickness values of the kettle body 2 and the thickened kettle bottom wall 1, the less applicable the aforementioned sealing connection form (i.e. the crimp sealing connection or the weld sealing connection) is, therefore, the difference between the thickness values of the two should not be less than 0.5mm, and further, the difference between the thickness values of the two should be greater than or equal to 1 mm. In addition, the larger the difference between the thickness values of the pot body 2 and the thickened pot bottom wall 1, the larger the thickness of the pot bottom wall 1, and the higher the cost for producing the electric pot, therefore, the difference between the thickness values of the pot body 2 and the thickened pot bottom wall 1 should not be more than 5mm, and further, the difference between the thickness values of the two should be less than or equal to 4 mm.
Specifically, referring to fig. 1 and 6, the inclination angle of the inner inclined wall of the inclined overlapping end is the same as that of the inclined overlapping wall, the inner inclined wall of the inclined overlapping end is attached to the inclined overlapping wall, further, the bottom end surface of the inclined overlapping end is flush with the bottom wall surface of the kettle bottom wall 1, and a sealing weld is formed between the bottom end surface and the bottom wall surface.
In addition, referring to fig. 2 and 7, the inner inclined wall of the inclined overlapping end has the same inclination angle as the inclined overlapping wall, the inner inclined wall of the inclined overlapping end is attached to the inclined overlapping wall, the outer peripheral wall of the kettle bottom wall 1 comprises a vertical upper peripheral wall vertically extending downwards from the top wall surface of the kettle bottom wall 1 and an inclined overlapping wall inclined downwards from the vertical upper peripheral wall, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body 2.
Of course, when the inner inclined wall of the inclined overlapping end has the same inclination angle as the inclined overlapping wall and the inner inclined wall of the inclined overlapping end is attached to the inclined overlapping wall, the sealing connection structure between the kettle body 2 and the thickened kettle bottom wall 1 can further include, in addition to the two structures, an inclined overlapping wall inclined downward from the top wall surface of the kettle bottom wall 1 and a vertical lower peripheral wall vertically extending downward from the bottom end of the inclined overlapping wall to the bottom wall surface of the kettle bottom wall 1, and a sealing weld is formed between the bottom end surface of the inclined overlapping end and the vertical lower peripheral wall, see fig. 3 and 8.
Specifically, referring to fig. 4 and 9, the top end of the inclined overlapping end abuts against the inclined overlapping wall, and an included angle gap is formed between the inclined overlapping wall and the inner inclined wall of the inclined overlapping end, and a sealing weld is filled in the included angle gap.
In addition, referring to fig. 5 and 10, the sealing connection structure between the kettle body 2 and the thickened kettle bottom wall 1 can also be formed by abutting the top end of the inclined overlapping end on the inclined overlapping wall, an included angle gap is formed between the inclined overlapping wall and the inner inclined wall of the inclined overlapping end, a sealing welding seam is filled in the included angle gap, the outer peripheral wall of the kettle bottom wall 1 comprises a vertical upper peripheral wall vertically extending downwards from the top wall surface of the kettle bottom wall 1 and an inclined overlapping wall inclined downwards from the vertical upper peripheral wall, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body 2.
Specifically, the effect that sets up perpendicular perisporium at the periphery wall of kettle diapire mainly lies in, laminates in the internal perisporium of kettle body 2 through perpendicular perisporium, can carry out better spacing to kettle body 2, so can be more convenient for operating personnel seal weld, consequently, the vertical height of perpendicular perisporium is preferred to be greater than 0mm and be not more than 1 mm.
When operating personnel is carrying out seal welding, this perpendicular perisporium can laminate in the internal perisporium of kettle body 2, like this through perpendicular perisporium and from the slope overlap joint wall of perpendicular perisporium downward sloping, can carry out better spacing to kettle body 2, the operating personnel of being more convenient for carries out seal welding.
Specifically, the heating element 4 may be an electric heating tube disposed below the kettle bottom wall 1, an electric heating film (i.e., an infrared electric heating film) or a thick film attached to the bottom wall surface of the kettle bottom wall 1, or a coil panel or a PTC heating plate disposed below the kettle bottom wall 1. However, the electric heating tube is generally annular and conducts heat in a contact heat conduction manner, and the heat contact area with the kettle bottom wall 1 is small, compared with other heating elements 4, the electric heating tube is more likely to cause uneven heat conduction to the kettle bottom wall 1 in the heating process due to the characteristics of the structure and the heat conduction manner of the electric heating tube, so that small and dense steam bubbles are generated on the kettle bottom wall 1, great noise is easily generated on the electric kettle, and the noise reduction of the corresponding electric kettle heated by the electric heating tube can be better improved after the thickness of the kettle bottom wall 1 is increased.
Referring to fig. 1 and 2, the electric heating tube may be directly welded to the bottom of the kettle bottom wall 1 (i.e. the electric heating tube is disposed on the bottom surface of the kettle bottom wall 1), or may be fixedly connected to the bottom wall surface of the kettle bottom wall 1 (i.e. the electric heating tube is disposed below the kettle bottom wall 1) by welding or fastening members through the base plate 8, and usually, the electric heating tube, the base plate 8, and the kettle bottom wall 1 are preferably soldered. The substrate 8 is usually a high thermal conductivity metal plate with a thermal conductivity not less than 100W/m · k, such as a copper plate, an aluminum plate, etc., and the heat conduction in the thickness direction is fast, which facilitates the installation of the electric heating tube, but does not affect the heat transfer of the electric heating tube. As is well known to those skilled in the art, the substrate 8 is usually provided with a dry-burning prevention sheet thereon for the purpose of preventing dry burning.
Furthermore, the outer periphery of the kettle bottom wall 1 should be aligned with or extend beyond the outer periphery of the base plate 8, and the area of the vertical projection of the heating element 4 towards the bottom wall surface of the kettle bottom wall 1 should be located within the area of the vertical projection of the base plate 8 towards the bottom wall surface of the kettle bottom wall 1 (i.e. the outer periphery of the heating element 4 should not extend beyond the outer periphery of the base plate 8).
The invention is specifically illustrated below in several preferred embodiments.
In a first preferred embodiment, referring to fig. 1 and 6, the electric kettle comprises a kettle body 2 and a thickened kettle bottom wall 1, wherein the thicknesses of the kettle body 2 and the kettle bottom wall 1 are respectively 0.5mm and 1mm (namely, the difference between the thickness values of the kettle bottom wall 1 and the kettle body 2 is 0.5 mm). Wherein, kettle bottom wall 1 is discoid, and the periphery wall of kettle bottom wall 1 includes the slope overlap joint wall that just leans out downwards, and the bottom of kettle body 2 is formed with the slope overlap joint end that just leans out downwards correspondingly, and the interior slope wall of slope overlap joint end is the same with the angle of inclination of slope overlap joint wall, and the interior slope wall laminating slope overlap joint wall of slope overlap joint end, and in addition, the bottom face of slope overlap joint end flushes and is formed with sealed welding seam between bottom face and the bottom wall face with the diapire face of kettle bottom wall 1. Of course, an annular electric heating tube is arranged below the kettle bottom wall 1, and a base plate 8 is arranged between the kettle bottom wall 1 and the electric heating tube, wherein the base plate 8 is an aluminum plate with a heat conductivity coefficient not less than 100W/m.k. Wherein, the outer periphery of the kettle bottom wall 1 is aligned with or exceeds the outer periphery of the base plate 8, and the vertical projection area of the bottom wall surface of the electrothermal tube facing the kettle bottom wall 1 is positioned in the vertical projection area of the bottom wall surface of the base plate 8 facing the kettle bottom wall 1.
In a second preferred embodiment, referring to fig. 2 and 7, the electric kettle comprises a kettle body 2 and a thickened kettle bottom wall 1, wherein the thicknesses of the kettle body 2 and the kettle bottom wall 1 are respectively 0.4mm and 3mm (namely, the difference between the thickness values of the kettle bottom wall 1 and the kettle body 2 is 2.6 mm). The kettle bottom wall 1 is disc-shaped, the outer peripheral wall of the kettle bottom wall 1 comprises an inclined lapping wall which is inclined downwards and outwards, the bottom end of the kettle body 2 is correspondingly provided with an inclined lapping end which is inclined downwards and outwards, the inclination angle of the inner inclined wall of the inclined lapping end is the same as that of the inclined lapping wall, the inner inclined wall of the inclined lapping end is attached to the inclined lapping wall, the bottom end surface of the inclined lapping end is flush with the bottom wall surface of the kettle bottom wall 1, and a sealing welding seam is formed between the bottom end surface and the bottom wall surface; in addition, the outer peripheral wall of the kettle bottom wall 1 comprises a vertical upper peripheral wall vertically extending downwards from the top wall surface of the kettle bottom wall 1 and an inclined lapping wall inclined downwards from the vertical upper peripheral wall, the vertical height of the vertical upper peripheral wall is 0.5mm, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body 2. Of course, an annular electric heating tube is arranged below the kettle bottom wall 1, and a base plate 8 is arranged between the kettle bottom wall 1 and the electric heating tube, wherein the base plate 8 is an aluminum plate with a heat conductivity coefficient not less than 100W/m.k. Wherein, the outer periphery of the kettle bottom wall 1 is aligned with or exceeds the outer periphery of the base plate 8, and the vertical projection area of the bottom wall surface of the electrothermal tube facing the kettle bottom wall 1 is positioned in the vertical projection area of the bottom wall surface of the base plate 8 facing the kettle bottom wall 1.
In a third preferred embodiment, referring to fig. 3 and 8, the electric kettle comprises a kettle body 2 and a thickened kettle bottom wall 1, wherein the thicknesses of the kettle body 2 and the kettle bottom wall 1 are respectively 0.8mm and 5mm (namely, the difference between the thickness values of the kettle bottom wall 1 and the kettle body 2 is 4.2 mm). The kettle bottom wall 1 is disc-shaped, and the outer peripheral wall of the kettle bottom wall 1 comprises an inclined lapping wall which is inclined downwards from the top wall surface of the kettle bottom wall 1 and a vertical lower peripheral wall which vertically extends downwards from the bottom end of the inclined lapping wall to the bottom wall surface of the kettle bottom wall 1; the bottom end of the kettle body 2 is correspondingly provided with an inclined lapping end which is inclined downwards and outwards, the inclined angle of an inner inclined wall of the inclined lapping end is the same as that of the inclined lapping wall, the inner inclined wall of the inclined lapping end is attached to the inclined lapping wall, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body 2; further, a sealing bead is formed between the bottom end face of the inclined lap end and the vertical lower peripheral wall. Of course, an annular electric heating tube is arranged below the kettle bottom wall 1, and a base plate 8 is arranged between the kettle bottom wall 1 and the electric heating tube, wherein the base plate 8 is an aluminum plate with a heat conductivity coefficient not less than 100W/m.k. Wherein, the outer periphery of the kettle bottom wall 1 is aligned with or exceeds the outer periphery of the base plate 8, and the vertical projection area of the bottom wall surface of the electrothermal tube facing the kettle bottom wall 1 is positioned in the vertical projection area of the bottom wall surface of the base plate 8 facing the kettle bottom wall 1.
In a fourth preferred embodiment, referring to fig. 4 and 9, the electric kettle comprises a kettle body 2 and a thickened kettle bottom wall 1, wherein the thicknesses of the kettle body 2 and the kettle bottom wall 1 are respectively 0.5mm and 2mm (namely, the difference between the thickness values of the kettle bottom wall 1 and the kettle body 2 is 1.5 mm). Wherein, kettle bottom wall 1 is discoid, and the periphery wall of kettle bottom wall 1 includes the slope overlap joint wall that inclines downwards and outwards, and the bottom of kettle body 2 is formed with the slope overlap joint end that inclines downwards and outwards correspondingly, and the top butt of slope overlap joint end is formed with the contained angle gap between the interior slope wall of slope overlap joint wall and slope overlap joint end on the slope overlap joint wall, and it has sealed welding seam to fill in this contained angle gap. Of course, an annular electric heating tube is arranged below the kettle bottom wall 1, and a base plate 8 is arranged between the kettle bottom wall 1 and the electric heating tube, wherein the base plate 8 is an aluminum plate with a heat conductivity coefficient not less than 100W/m.k. Wherein, the outer periphery of the kettle bottom wall 1 is aligned with or exceeds the outer periphery of the base plate 8, and the vertical projection area of the bottom wall surface of the electrothermal tube facing the kettle bottom wall 1 is positioned in the vertical projection area of the bottom wall surface of the base plate 8 facing the kettle bottom wall 1.
In a fifth preferred embodiment, referring to fig. 5 and 10, the electric kettle comprises a kettle body 2 and a thickened kettle bottom wall 1, wherein the thicknesses of the kettle body 2 and the kettle bottom wall 1 are respectively 0.4mm and 4mm (namely, the difference between the thickness values of the kettle bottom wall 1 and the kettle body 2 is 3.6 mm). The kettle bottom wall 1 is disc-shaped, the outer peripheral wall of the kettle bottom wall 1 comprises a vertical upper peripheral wall vertically extending downwards from the top wall surface of the kettle bottom wall 1 and an inclined lapping wall inclined downwards from the vertical upper peripheral wall, and the vertical height of the vertical upper peripheral wall is 1 mm; the bottom end of the kettle body 2 is correspondingly provided with an inclined lapping end which is inclined downwards and outwards, the top end of the inclined lapping end is abutted against the inclined lapping wall, an included angle gap is formed between the inclined lapping wall and the inner inclined wall of the inclined lapping end, and the vertical upper peripheral wall is attached to the inner peripheral wall of the kettle body 2; in addition, a sealing weld is filled in an included angle gap formed between the inclined lapping wall and the inner inclined wall of the inclined lapping end.
Among the insulating pot of above five kinds of embodiments, be formed with the slope overlap joint wall that inclines downwards and outwards on the periphery wall of kettle diapire 1, the bottom of kettle body 2 also is formed with the slope overlap joint end that inclines downwards and outwards correspondingly, then with the slope overlap joint end butt of kettle body 2 on the slope overlap joint wall of kettle diapire 1, form the sealing connection structure of kettle body 2 and kettle diapire 1, this kind of kettle body 2 and the sealed connection structure manufacturing process of thickened kettle diapire 1 are simple, the operating personnel of also being convenient for simultaneously carries out seal welding with kettle body 2 and thickened kettle diapire 1.
In addition, referring to fig. 16 and 18, the sealing connection structure between the kettle body 2 and the thick kettle bottom wall 1 may further be that the kettle bottom wall 1 is a circular plate, the kettle body 2 is cylindrical, the outer peripheral wall of the kettle bottom wall 1 is attached to the inner peripheral wall of the bottom of the kettle body 2, and a sealing weld is formed between the bottom wall surface of the kettle bottom wall 1 and the inner peripheral wall of the kettle body 2. Of course, the sealing connection structure between the kettle body 2 and the thick kettle bottom wall 1 may also be a circular plate for the kettle bottom wall 1, the bottom end of the kettle body 2 is formed with a horizontally outwardly bent overlapping end, the bottom wall surface of the overlapping end is attached to the top wall surface of the kettle bottom wall 1, the end surface of the overlapping end is flush with the outer peripheral wall of the kettle bottom wall 1, and a sealing weld is formed between the end surface of the overlapping end and the outer peripheral wall of the kettle bottom wall 1, see fig. 17 and 19.
Specific example 1: by adopting the structure of the electric kettle shown in fig. 1 and 2, the kettle bottom wall 1 is disc-shaped and is a 304 stainless steel plate with the heat conductivity coefficient not more than 60W/m.k, and the outer peripheral wall of the kettle bottom wall 1 is provided with an inclined lapping wall which is inclined downwards and outwards; the thickness of the kettle body 2 is 0.5mm, and the bottom end of the kettle body is correspondingly provided with an inclined lapping end which inclines downwards and outwards, and the inclined lapping end is butted against the inclined lapping wall and is welded in a sealing way; the electric heating tube is annular and is positioned below the kettle bottom wall 1, a base plate 8 is also arranged between the kettle bottom wall 1 and the electric heating tube, and the base plate 8 is an aluminum plate with the heat conductivity coefficient not less than 100W/m.k.
Wherein, the heating power of electrothermal tube: 1800W, water amount in the kettle: 1.7L.
The testing steps are as follows:
1) the water quantity with the highest water level is put into the kettle;
2) the water temperature sensor is arranged in the middle of the water level height of the center of the kettle;
3) pressing a start key to start timing measurement;
4) stopping timing measurement when the temperature of water in the kettle rises to 80 ℃;
5) and eliminating the noise value with the sound power value less than or equal to 45dB, carrying out A weighting on the tested noise value, and taking the average sound power as a judgment value.
The noise data obtained for the operation of the electric kettle at different thicknesses of the bottom wall 1 of the kettle are given in table 1 below.
Table 1: noise data table under different pot bottom wall 1 thickness
Referring to table 1, with the increase of the thickness of the kettle bottom wall 1 with low thermal conductivity, the effect of heat transfer in the thickness direction is slowed down, and meanwhile, the transverse heating is more uniform, so that the maximum sound power value and the average sound power value of the kettle both tend to fall, and the noise reduction is facilitated. However, if the thickness of the kettle bottom wall 1 is too large, the thermal efficiency is low, and the material cost is increased, so the thickness of the kettle bottom wall 1 should be not less than 1mm and not more than 5mm, preferably not less than 2mm and not more than 4 mm.
Comparative example 1: an electric kettle structure shown in fig. 12 and 14 is adopted, wherein the kettle bottom wall 1 is a 304 stainless steel plate with a heat conductivity coefficient not greater than 60W/m · k, the top surface of the kettle bottom wall 1 is a horizontal wall surface, and the thickness of the kettle bottom wall 1 is 0.5 mm; the thickness of the kettle body 2 is 0.5mm, a horizontally and inwardly bent overlapping end is formed at the bottom end of the kettle body, and the end surface of the overlapping end is attached to the outer peripheral wall of the kettle bottom wall 1 and is welded in a sealing manner; the electric heating tube is annular and is positioned below the kettle bottom wall 1, a base plate 8 is also arranged between the kettle bottom wall 1 and the electric heating tube, and the base plate 8 is an aluminum plate with the heat conductivity coefficient not less than 100W/m.k.
In addition, the other experimental parameters were identical to those in example 1.
And (3) testing results: the maximum sound power value of the electric kettle in working is 71.2dB, and the average sound power value is 63.9 dB.
Comparing example 1 and comparative example 1, it can be seen that, compared with the thickness of the kettle bottom wall 1 being 0.5mm, the thickness of the kettle bottom wall 1 with low heat conductivity coefficient is increased, the maximum sound power value generated by the thickness of the kettle bottom wall 1 is obviously less than 71.2dB, and the average sound power value is also less than 63.9dB, so that the maximum sound power and the average sound power generated by the electric kettle during operation can be reduced by increasing the thickness of the kettle bottom wall 1, and the effect of optimizing and reducing noise can be finally achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (11)
1. The utility model provides an electric kettle, includes kettle diapire (1) and kettle body (2), wherein, the thickness of kettle diapire (1) is greater than the difference of the thickness and the thickness value of kettle body (2) is not less than 1mm and is not more than 4mm, the thickness of kettle diapire (1) is not less than 1mm and is not more than 5mm, kettle diapire (1) is discoid, the periphery wall of kettle diapire (1) includes the slope overlap joint wall that inclines downwards and outwards, the bottom of kettle body (2) correspondingly forms the slope overlap joint end that has downwards and inclines out, slope overlap joint end butt in on the slope overlap joint wall and seal welding.
2. The electric kettle of claim 1, wherein the inner sloped wall of the sloped overlap end has the same slope angle as the sloped overlap wall, the inner sloped wall of the sloped overlap end abutting the sloped overlap wall.
3. An electric kettle according to claim 2, wherein the bottom end face of the inclined butt end is flush with the bottom wall face of the kettle bottom wall (1) and a sealing weld is formed between the bottom end face and the bottom wall face.
4. An electric kettle as claimed in claim 3, wherein the outer peripheral wall of the kettle bottom wall (1) comprises a vertical upper peripheral wall extending vertically downwards from the top wall face of the kettle bottom wall (1) and said inclined overlapping wall sloping downwards from said vertical upper peripheral wall, said vertical upper peripheral wall conforming to the inner peripheral wall of the kettle body (2).
5. An electric kettle according to claim 2, wherein the peripheral wall of the kettle bottom wall (1) comprises the inclined overlap wall sloping downwards from the top wall face of the kettle bottom wall (1) and a vertical lower peripheral wall extending vertically downwards from the bottom end of the inclined overlap wall to the bottom wall face of the kettle bottom wall (1), a sealing weld being formed between the bottom end face of the inclined overlap end and the vertical lower peripheral wall.
6. The electric kettle of claim 1, wherein a top end of the inclined overlapping end abuts against the inclined overlapping wall, an included angle gap is formed between the inclined overlapping wall and an inner inclined wall of the inclined overlapping end, and a sealing weld is filled in the included angle gap.
7. The electric kettle as claimed in claim 6, wherein the outer peripheral wall of the kettle bottom wall (1) comprises a vertical upper peripheral wall extending vertically downward from the top wall surface of the kettle bottom wall (1) and the inclined overlapping wall sloping downward from the vertical upper peripheral wall, the vertical upper peripheral wall conforming to the inner peripheral wall of the kettle body (2).
8. The electric kettle of claim 4, wherein the vertical height of the vertical upper peripheral wall is greater than 0mm and not greater than 1 mm.
9. An electric kettle according to any one of claims 1 to 8, wherein the thickness of the kettle body (2) is not less than 0.4mm and not more than 0.8 mm.
10. An electric kettle according to claim 1, further comprising a heating element (4) arranged below the kettle bottom wall (1), a base plate (8) being further arranged between the heating element (4) and the kettle bottom wall (1), the base plate (8) being a high thermal conductivity metal plate having a thermal conductivity of not less than 100W/m.k.
11. An electric kettle according to claim 10, wherein the outer circumference of the kettle bottom wall (1) is aligned with or exceeds the outer circumference of the base plate (8), and the vertical projection area of the heating element (4) towards the bottom wall surface of the kettle bottom wall (1) is located within the vertical projection area of the base plate (8) towards the bottom wall surface of the kettle bottom wall (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282727.7A CN108784334B (en) | 2017-04-26 | 2017-04-26 | Electric kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710282727.7A CN108784334B (en) | 2017-04-26 | 2017-04-26 | Electric kettle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108784334A CN108784334A (en) | 2018-11-13 |
| CN108784334B true CN108784334B (en) | 2021-04-20 |
Family
ID=64069263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710282727.7A Active CN108784334B (en) | 2017-04-26 | 2017-04-26 | Electric kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108784334B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02262290A (en) * | 1989-03-31 | 1990-10-25 | Matsushita Electric Ind Co Ltd | Cooker |
| CN2373018Y (en) * | 1999-04-21 | 2000-04-12 | 浙江奇迪集团有限公司 | Water heater for drinker |
| WO2001062129A1 (en) * | 2000-02-25 | 2001-08-30 | Otter Controls Limited | Improvements relating to electrically heated vessels |
| CN2544655Y (en) * | 2002-05-27 | 2003-04-16 | 杨子其 | Stainless steel pot with sand surface |
| CN103120541A (en) * | 2013-01-31 | 2013-05-29 | 浙江绍兴苏泊尔生活电器有限公司 | Electric heating kettle |
| CN203000542U (en) * | 2012-07-04 | 2013-06-19 | 美的集团股份有限公司 | Kettle connecting structure |
| CN203815288U (en) * | 2014-05-07 | 2014-09-10 | 新兴县粤兴华不锈钢制品有限公司 | High-thermal-conductivity stainless-steel composite-bottom pot |
| CN205251243U (en) * | 2015-11-26 | 2016-05-25 | 张钢森 | Improved electric kettle inner container |
| CN205795483U (en) * | 2016-04-20 | 2016-12-14 | 佛山市顺德区美的电热电器制造有限公司 | A kind of Electromagnetic Heating pan |
| CN206006885U (en) * | 2016-06-29 | 2017-03-15 | 佛山市顺德区美的电热电器制造有限公司 | Pot and pan |
| CN206080222U (en) * | 2016-07-26 | 2017-04-12 | 佛山市顺德区美的电热电器制造有限公司 | Pot |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2351894B (en) * | 1999-05-04 | 2003-10-15 | Otter Controls Ltd | Improvements relating to heating elements |
| GB0624984D0 (en) * | 2006-12-14 | 2007-01-24 | Otter Controls Ltd | Electric water heater |
| CN201139433Y (en) * | 2008-01-18 | 2008-10-29 | 宋大水 | Integral durable aluminum kettle |
| CN203898037U (en) * | 2014-04-18 | 2014-10-29 | 熊朝光 | Stainless steel water kettle |
| CN207341619U (en) * | 2017-04-26 | 2018-05-11 | 佛山市顺德区美的电热电器制造有限公司 | Insulating pot |
-
2017
- 2017-04-26 CN CN201710282727.7A patent/CN108784334B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02262290A (en) * | 1989-03-31 | 1990-10-25 | Matsushita Electric Ind Co Ltd | Cooker |
| CN2373018Y (en) * | 1999-04-21 | 2000-04-12 | 浙江奇迪集团有限公司 | Water heater for drinker |
| WO2001062129A1 (en) * | 2000-02-25 | 2001-08-30 | Otter Controls Limited | Improvements relating to electrically heated vessels |
| CN2544655Y (en) * | 2002-05-27 | 2003-04-16 | 杨子其 | Stainless steel pot with sand surface |
| CN203000542U (en) * | 2012-07-04 | 2013-06-19 | 美的集团股份有限公司 | Kettle connecting structure |
| CN103120541A (en) * | 2013-01-31 | 2013-05-29 | 浙江绍兴苏泊尔生活电器有限公司 | Electric heating kettle |
| CN203815288U (en) * | 2014-05-07 | 2014-09-10 | 新兴县粤兴华不锈钢制品有限公司 | High-thermal-conductivity stainless-steel composite-bottom pot |
| CN205251243U (en) * | 2015-11-26 | 2016-05-25 | 张钢森 | Improved electric kettle inner container |
| CN205795483U (en) * | 2016-04-20 | 2016-12-14 | 佛山市顺德区美的电热电器制造有限公司 | A kind of Electromagnetic Heating pan |
| CN206006885U (en) * | 2016-06-29 | 2017-03-15 | 佛山市顺德区美的电热电器制造有限公司 | Pot and pan |
| CN206080222U (en) * | 2016-07-26 | 2017-04-12 | 佛山市顺德区美的电热电器制造有限公司 | Pot |
Non-Patent Citations (1)
| Title |
|---|
| 激光焊接不锈钢水壶;董瑞红;《焊接》;20151231;59-61 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108784334A (en) | 2018-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201504978U (en) | Multifunctional energy saving pot | |
| US6698337B1 (en) | Air core cookware | |
| CN101044953A (en) | Electric cooker | |
| CN108784334B (en) | Electric kettle | |
| CN108324099B (en) | Electric kettle | |
| CN206729738U (en) | Insulating pot | |
| CN207940630U (en) | A kind of compound pot | |
| CN108784333B (en) | Electric kettle | |
| CN100457003C (en) | Composite pot with cladded bottom | |
| WO2017036145A1 (en) | Wok capable of controlling cooking fumes and production method therefor | |
| CN207341619U (en) | Insulating pot | |
| CN108261072B (en) | Electric kettle | |
| CN206761466U (en) | Insulating pot | |
| CN108261070B (en) | Electric kettle | |
| CN204635974U (en) | Pan and cooking apparatus | |
| CN108784337B (en) | Electric kettle | |
| CN108261068B (en) | Electric kettle | |
| CN207341618U (en) | Insulating pot | |
| CN108113447B (en) | Inner pot and cooking utensil | |
| CN108784336B (en) | Electric kettle | |
| CN101849765A (en) | Electric cooker | |
| CN206621206U (en) | Insulating pot | |
| CN206950052U (en) | Insulating pot | |
| CN217365428U (en) | Cooking pot | |
| CN104490250A (en) | Novel dual-purpose pot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |