CN220507257U - Liquid heater - Google Patents

Abstract

The utility model relates to the technical field of small household appliances, in particular to a liquid heater. The heating component comprises a heat conducting disc and a heating piece arranged on the heat conducting disc, the bottom of the inner container is provided with a bottom plate, the heat conducting disc is welded on the bottom plate of the inner container, at least one soldering lug is arranged between the heat conducting disc and the bottom plate, and the heat conducting disc is welded on the bottom plate after the soldering lug is melted. According to the utility model, the welding structure between the prior bottom plate and the heat conducting disc is improved, the heat conducting uniformity of the heat conducting disc and the bottom plate is improved, so that the bottom plate is heated uniformly, the generation of bubbles and the vibration of the bottom plate are reduced, and the noise of the liquid heater during working is further reduced.

Description

Liquid heater

Technical Field

The utility model relates to the technical field of small household appliances, in particular to a liquid heater.

Background

The basic structure of current liquid heaters generally includes: the inner container and the heating component, the heating component comprises a heat conducting disc and a heating piece arranged on the heat conducting disc, the bottom of the inner container is provided with a bottom plate, the heat conducting disc is welded on the bottom plate of the inner container, and the heat conducting disc and the bottom plate are usually brazed together through soldering paste or welding flux and the like.

Such as chinese patent grant publication number CN216416831U, entitled "a floor assembly and liquid heating vessel"; chinese patent publication No. CN212878923U, entitled "a liquid heating container", and the like disclose a soldering structure in which a heat conductive plate and a base plate are soldered together by solder such as solder paste or flux. However, this welded structure has some drawbacks: the problem of uneven welding such as insufficient leveling of soldering paste or flux, insufficient virtual welding, partial area free of effective welding and the like exists between the heat conducting plate and the bottom plate, uneven heating of the bottom plate is further caused, a plurality of small bubbles are easily generated in liquid, and noise is generated in the bubble cracking process; and the base plate vibrates due to uneven heating, so that noise is generated.

Disclosure of Invention

The utility model aims to overcome the defects of uneven heating and high noise of a bottom plate caused by uneven welding between a heat conducting plate and the bottom plate by adopting welding flux in the traditional liquid heater, and provides the liquid heater, which improves the welding structure of the traditional bottom plate and the heat conducting plate, improves the welding uniformity between the heat conducting plate and the bottom plate, ensures that the bottom plate is heated uniformly, reduces the generation of bubbles and the vibration of the bottom plate, and further reduces the noise of the liquid heater during working.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a liquid heater, includes inner bag and heating element, and heating element includes the heat conduction dish and establishes the piece that generates heat on the heat conduction dish, and the bottom of inner bag has the bottom plate, and the heat conduction dish welds on the bottom plate of inner bag, be equipped with at least one soldering lug between heat conduction dish and the bottom plate, weld the heat conduction dish on the bottom plate after the soldering lug melts.

In the technical scheme, a bottom plate at the bottom of the inner container of the liquid heater is fixed with a heat conducting disc of a heating component through welding, at least one soldering lug is arranged between the heat conducting disc and the bottom plate, and the heat conducting disc is welded on the bottom plate after the soldering lug is melted. Adopt the lug to weld between bottom plate and the heat conduction dish, the lug whole piece is placed between bottom plate and the heat conduction dish, the lug is the sheetmetal that has processed in advance, can accomplish that shape and size are unified, when the welding, do not need to consider and scribble solder volume problem and solder leveling problem, the welding area exists the rosin joint or the regional risk that does not have effective welded reduces of part, the welding is more even, use the lug to weld simultaneously, the lug thickness is unified, the heat can evenly transfer to the welding area for the temperature distribution of welding area is more even, the lug is not big with welding part contact area melting speed difference, welding area welding speed is unanimous, further let the welding more even. The welding pieces are adopted for welding, and the welding between the bottom plate and the heat conducting disc is uniform, so that the heat conducted to the bottom plate by the heat conducting disc is more uniform, the number of bubbles generated by liquid in the heating process of the liquid heater is reduced, and the noise generated in the bubble cracking process is further reduced; and the noise generated by vibration of the bottom plate due to uneven heating is reduced. In this technical scheme, improve the welded structure of bottom plate and heat conduction dish, promote the heat conduction homogeneity of heat conduction dish and bottom plate for liquid is heated evenly, and then has reduced the noise, has promoted user's use and has experienced. Meanwhile, the heating component is arranged at the bottom of the liner, the existing bottom heating structure is kept, and noise is reduced under the condition of less structural change, so that the production and transformation cost of products is reduced. In addition, the bottom plate and the heat conducting disc are welded by the soldering lug, so that the welding connection strength is ensured, the bottom plate and the heat conducting disc are not easy to loosen or damage in the use or moving process of the liquid heater, and the effective service life of the product is further ensured. In addition, the bottom plate and the heat conducting disc are welded by adopting the soldering lug, and the soldering flux is not required to be smeared, so that the time consumed in the welding process is reduced, and the production efficiency of the product is improved; meanwhile, the soldering lug is used without smearing solder, so that the difficulty of automatic welding at a welding position is reduced, automatic welding can be adopted for welding power, the labor loss is reduced, the labor cost is further reduced, the labor participation is reduced, the welding process is controlled more accurately, and the welding uniformity is further improved.

The utility model is further arranged to: the bottom plate is provided with an upward protruding groove, the position of the groove is opposite to the position of the heating element, and the groove is filled after the welding lug is melted. The liquid heater needs to pass through the dry combustion method test before leaving the factory, because the position heat of the heating element is relatively concentrated, the noise difference around the dry combustion method test is larger, through this setting, set up the recess on the position that corresponds the heating element for the bottom plate that the heating element position was far away from the heat conduction dish, the thickness after the lug melting of here is thicker, reduce the heat and concentrate, the noise value difference around having solved the liquid heater dry combustion method test, guarantee that the liquid heater noise reduction performance can not change after the dry combustion method, and then guarantee that the user uses experience.

The utility model is further arranged to: the bottom plate comprises a first plane, the heat conducting disc comprises a second plane, the first plane and the second plane are oppositely arranged, the second plane is located below the first plane, the groove is formed in the first plane, and the soldering lug is filled between the first plane and the second plane after being melted. Through this setting, bottom plate and heat conduction dish can wholly be dull and stereotyped form, perhaps have two planes of a relative arrangement about one at least, and other positions can be designed into the dysmorphism face, and first plane and second plane pass through soldering lug fusion welding, and the recess design is on first plane to solve the noise value difference around the liquid heater dry combustion method test.

The utility model is further arranged to: and a plurality of welding lugs are arranged between the heat conducting disc and the bottom plate and are stacked together. Through the arrangement, the plurality of soldering lugs are arranged between the heat conducting disc and the bottom plate, the number of soldering lugs can be flexibly selected according to the thickness of the soldering lugs, the situation that the quantity of the soldering lugs in part of outer ring areas is insufficient to connect the heat conducting disc with the bottom plate after the soldering lugs are melted is prevented, uneven welding between the heat conducting disc and the bottom plate is caused, the risk of virtual welding exists in a welding area or the risk of effective welding does not exist in part of areas is increased, the noise reduction effect of the liquid heater is influenced, or the soldering lugs are too many, overflow is caused after the soldering lugs are melted, other performances of a product are influenced, and the normal production requirement of the product is not met; meanwhile, the welding pieces are stacked together, the horizontal distribution condition of the welding pieces between the heat conducting disc and the bottom plate is not changed, the distribution of the welding pieces between the heat conducting disc and the bottom plate is uniform, and therefore the welding between the heat conducting disc and the bottom plate is uniform under the condition of ensuring the welding pieces, and the noise reduction effect of the liquid heater is not affected. The setting can adapt to different soldering lug thicknesses, and then can carry out flexible welding to different soldering lug thicknesses.

The utility model is further arranged to: the thickness of the soldering lug is 0.1 to 0.15mm, and the number of the soldering lugs is two or three. Through this setting, the conventional processing thickness of lug is 0.1 to 0.15mm, the quantity that single lug can have the regional lug melting back of partial outer lane is insufficient to connect whole heat conduction dish and bottom plate, lead to the uniformity still to have the problem, consequently increase the quantity of lug for two or three, increase 2-3 times the lug, the lug melts the faying face between the even abundant full heat conduction dish of ability and the bottom plate, the welding area has been reduced and the risk of rosin joint exists or partial region does not have effective welding, make the welding more even between heat conduction dish and the bottom plate, and then make the heat that the heat conduction dish conducted to the bottom plate more even, liquid is heated evenly, guarantee the liquid heater efficiency of making an uproar that falls. If the number of the welding lugs is increased to four or more, the welding lugs are excessively molten and overflowed during welding, and the normal production of products cannot be met.

The utility model is further arranged to: all the soldering lugs are laminated to have thickness not greater than 0.5mm. By the arrangement, the thickness of the stacked welding pieces is not more than 0.5mm, so that excessive melting and overflowing of the welding pieces during welding are prevented, and the welding effect between the heat conducting disc and the bottom plate can be ensured; if the thickness of all the welding tabs after being laminated exceeds 0.5mm: firstly, the too thick soldering lug can lead to uneven heat transfer, so that the temperature distribution of a welding area is uneven, partial areas can obtain excessive heat because of the too thick soldering lug, and other areas obtain less heat, thereby causing uneven welding. Secondly, too thick soldering lug increases the conduction path of heat, resulting in reduced heating efficiency, which means that more time and energy are required to reach the required soldering temperature in the soldering process, thereby reducing the soldering efficiency between the heat conducting plate and the bottom plate, and further reducing the production efficiency of the product. Secondly, the too thick soldering lug possibly leads to the fact that contact between soldering lug and the welding part is not tight in the welding process, so that welding defects, such as false soldering, infirm welding and the like, are generated, the welding defects can influence the reliability and stability of welding, further the effective service life of products is influenced, meanwhile, the risk that false soldering exists in a welding area or effective welding does not exist in a part area is increased, heat conduction between a heat conducting disc and a bottom plate can be influenced, liquid is heated unevenly, and then the noise reduction effect of a liquid heater is influenced.

The utility model is further arranged to: the base material of the soldering lug and the heat conducting disc are made of the same metal material. Through this setting, the substrate and the heat conduction dish of lug are same metal material, and same metal material has similar chemical composition, mechanical properties and coefficient of thermal expansion, can realize the good compatibility of welding part and substrate. The welding non-uniformity between the heat conducting disc and the bottom plate can be reduced, the welding uniformity is improved, and the welding quality between the heat conducting disc and the bottom plate is improved; the bearing capacity of a welding area between the heat conducting disc and the bottom plate in a stress environment is ensured; and avoids stress concentration and microcrack generation. The arrangement ensures the welding quality and reliability between the heat conducting disc and the bottom plate, and further ensures the effective service life of the product; simultaneously guaranteed welded homogeneity between heat conduction dish and the bottom plate for heat conduction dish and bottom plate heat conduction are even, make liquid be heated evenly, and then reduced the noise, promote user's use experience.

The utility model is further arranged to: the heat conducting disc is an aluminum disc, and the soldering lug is an aluminum base material and solder composite sheet. Through this setting, the coefficient of heat conductivity of aluminium is high, and heat can be transmitted to the welding area between heat conduction dish and the bottom plate rapidly during the welding, and the temperature of welding area is even, has guaranteed welding quality, has further guaranteed the effective life of product. In addition, the aluminum has high heat conductivity coefficient and higher welding speed, so that the time consumed in the welding process is reduced, and the production efficiency of products is improved.

The utility model is further arranged to: the diameter of the soldering lug is smaller than that of the heat conducting disc. By the arrangement, the soldering lug is positioned in the coverage area of the heat conducting disc and the bottom plate, so that the soldering lug is prevented from overflowing after being melted during welding, and other performances of the product are further influenced; and simultaneously, the welding requirement between the heat conducting disc and the bottom plate can be met.

The utility model is further arranged to: the ratio of the diameter of the soldering lug to the diameter of the heat conducting plate is 0.7 to 0.95. According to the arrangement, the welding lug is positioned in the coverage range of the heat conducting disc and the bottom plate, the ratio of the diameter of the welding lug to the diameter of the heat conducting disc is 0.7-0.95, wherein the ratio of the diameter of the welding lug to the diameter of the heat conducting disc is 0.7, which is the lowest limit of the welding strength between the heat conducting disc and the bottom plate, if the ratio of the diameter of the welding lug to the diameter of the heat conducting disc is lower than 0.7, the welding strength between the heat conducting disc and the bottom plate is insufficient, the bottom plate and the heat conducting disc are easily loosened or damaged in the using or moving process of the liquid heater, the effective service life of a product is influenced, and meanwhile, the ratio of the diameter of the welding lug to the diameter of the heat conducting disc is lower than 0.7, so that the welding lug cannot be uniformly distributed between the bottom plate and the heat conducting disc after being melted, and further the problem of virtual welding or partial area is not effectively welded exists is caused, the heat conducting uniformity of the bottom plate and the heat conducting disc is influenced, and the noise reducing effect of the liquid heater is reduced; wherein the ratio of the lug diameter to the diameter of the heat conducting disc is 0.95 for meeting the highest upper limit of the welding requirement between the heat conducting disc and the bottom plate, if the ratio of the lug diameter to the diameter of the heat conducting disc is higher than 0.95, the lug can overflow after being melted during welding to affect other properties of products, and the welding requirement between the heat conducting disc and the bottom plate is not met, and meanwhile, the uniformity of welding between the heat conducting disc and the bottom plate can be affected, so that the uniformity of heat conduction between the bottom plate and the heat conducting disc is reduced, the uniformity of liquid heating is further reduced, and the noise reduction effect of the liquid heater is further affected.

The utility model is further arranged to: the lug is configured in a circular or polygonal configuration. Through this setting, the lug is constructed into circular or polygonal structure, circular or polygonal can be better match lid heat conduction dish and the welded area of bottom plate, and then make the welded area between lug can better cover heat conduction dish and the bottom plate, thereby provide bigger welded area and heat conduction area, the risk that the welded area exists the rosin joint or partial region does not have effective welded reduces, make the welding even between heat conduction dish and the bottom plate, guaranteed bottom plate and heat conduction dish heat conduction homogeneity, further promote liquid heater and fall efficiency. And meanwhile, the welding area and the heat conduction area are larger, so that the welding strength and the reliability between the heat conducting disc and the bottom plate can be ensured, and the effective service life of the product is ensured.

The beneficial effects of the utility model are as follows: the welding structure of the bottom plate and the heat conducting disc is improved, the heat conducting uniformity of the heat conducting disc and the bottom plate is improved, so that liquid is heated uniformly, noise is reduced, and the use experience of a user is improved; meanwhile, the heating component is arranged at the bottom of the liner, the existing bottom heating structure is kept, and noise is reduced under the condition of less structural change, so that the production and transformation cost of products is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of a split according to the present utility model;

FIG. 3 is a schematic view of another embodiment of the present utility model;

fig. 4 is a schematic diagram of a floor recess structure according to the present utility model.

In the figure: 100. an inner container; 110. a bottom plate; 120. a groove; 200. a heating component; 210. a heat conduction plate; 220. a heat generating member; 230. and (5) welding the sheet.

Detailed Description

In the description of the present embodiment, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like are presented, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.

The utility model is further described below with reference to the drawings and specific embodiments.

Referring to fig. 1 to 3, a liquid heater includes a liner 100 and a heating assembly 200, the heating assembly 200 includes a heat conducting plate 210 and a heating element 220 disposed on the heat conducting plate 210, a bottom plate 110 is disposed at the bottom of the liner 100, the heat conducting plate 210 is welded on the bottom plate 110 of the liner 100, at least one soldering lug 230 is disposed between the heat conducting plate 210 and the bottom plate 110, and the soldering lug 230 welds the heat conducting plate 210 on the bottom plate 110 after melting.

In this embodiment, the bottom plate 110 at the bottom of the inner container 100 of the liquid heater and the heat conducting plate 210 of the heat generating component 200 are fixed together by welding, at least one soldering lug 230 is arranged between the heat conducting plate 210 and the bottom plate 110, and the soldering lug 230 is melted and then the heat conducting plate 210 is welded on the bottom plate 110. The welding plate 230 is adopted between the bottom plate 110 and the heat conducting disc 210, the whole welding plate 230 is placed between the bottom plate 110 and the heat conducting disc 210, the welding plate 230 is a metal plate which is processed in advance, the shape and the size are uniform, the problem of the amount of smeared welding material and the problem of the leveling of the welding material do not need to be considered in the welding process, the risk of virtual welding or the lack of effective welding of partial areas in the welding area is reduced, the welding is more uniform, the welding plate 230 is used for welding, the thickness of the welding plate is uniform, the heat can be uniformly transferred to the welding area, the temperature distribution of the welding area is more uniform, the difference of the melting speed of the welding plate 230 and the welding part contact area is not large, the welding speed of the welding area is uniform, and the welding is more uniform. The welding of the welding lug 230 is adopted, and the welding between the bottom plate 110 and the heat conducting disc 210 is uniform, so that the heat conducted to the bottom plate 110 by the heat conducting disc 210 is more uniform, the quantity of bubbles generated by liquid in the heating process of the liquid heater is reduced, and the noise generated in the bubble cracking process is further reduced; and noise generated by vibration of the bottom plate 110 due to uneven heating is reduced. In this embodiment, improve the welded structure of bottom plate 110 and heat conduction dish 210, promote heat conduction dish 210 and bottom plate 110 heat conduction homogeneity for liquid is heated evenly, and then has reduced the noise, has promoted user's use experience. Meanwhile, the heating component 200 is arranged at the bottom of the liner 100, the existing bottom heating structure is maintained, and the noise is reduced under the condition of less structural modification, so that the production and transformation costs of products are reduced. In addition, the soldering lug 230 is adopted to solder the bottom plate 110 and the heat conducting disc 210, and the risk that the virtual soldering exists at the soldered part or the partial area is not effectively soldered is reduced, so that the soldering connection strength is ensured, the bottom plate 110 is not easy to loosen or damage in the use or moving process of the liquid heater, and the effective service life of the product is further ensured. In addition, the bottom plate 110 and the heat conducting disc 210 are welded by adopting the soldering lug 230, and no solder is required to be smeared, so that the time consumed in the welding process is reduced, and the production efficiency of products is improved; meanwhile, the welding lug 230 is used without being coated with solder, so that the difficulty of automatic welding at a welding position is reduced, automatic welding can be adopted for welding power, the labor loss is reduced, the labor cost is further reduced, the labor participation is further reduced, the welding process is controlled more accurately, and the welding uniformity is further improved.

Specifically, the thickness of the tab 230 is 0.1 to 0.15mm, and the number of the tab 230 is two or three. For example, referring to fig. 2, the number of tabs 230 is two, and referring to fig. 3, the number of tabs 230 is three. Through this setting, the thickness of lug 230 is 0.1 to 0.15mm, and optimally, for 0.12mm of standard specification, and the quantity of lug 230 is two or three, increases 2-3 times lug 230, and the lug 230 melts the faying face that can evenly abundant be covered between heat conduction dish 210 and bottom plate 110, has reduced the welding area and has the risk of cold joint or partial region do not have effective welding for the welding is more even between heat conduction dish 210 and the bottom plate 110, and then makes the heat that heat conduction dish 210 conducted to bottom plate 110 more even, and the liquid is heated evenly, guarantees the liquid heater and falls the efficiency of making an uproar. If the number of the soldering lug 230 is increased to four or more, the soldering lug is excessively melted and easily overflows during welding, and the normal production of the product cannot be satisfied.

It will be appreciated that 2-3 sheets of 0.12mm solder tabs 230 may be added between the base plate 110 and the thermally conductive plate 210 and then joined by solder.

It is understood that the thickness of the tab 230 may be 0.1, 0.13, 0.15, etc. as appropriate.

More specifically, the thickness of all tabs 230 after lamination is no more than 0.5mm. By the arrangement, the thickness of the stacked welding tabs 230 is not more than 0.5mm, so that excessive melting and overflowing of the welding tabs 230 during welding are prevented, and the welding effect between the heat conducting disc 210 and the bottom plate 110 can be ensured; if the thickness of all the tabs 230 after lamination exceeds 0.5mm: first, too thick a tab 230 may result in uneven heat transfer, so that the temperature distribution in the welded area is uneven, and some areas may receive too much heat due to too thick a tab 230, while other areas receive less heat, thereby resulting in uneven welding. Second, too thick a tab 230 increases the heat conduction path, resulting in reduced heating efficiency, which means that more time and energy are required to reach the desired welding temperature during the welding process, thereby reducing the welding efficiency between the heat conductive plate 210 and the bottom plate 110, and thus reducing the product production efficiency. Secondly, the too thick soldering lug 230 may cause the contact between the soldering lug 230 and the soldered part in the soldering process to be not tight, so as to generate soldering defects, such as cold soldering, unstable soldering, etc., the soldering defects may affect the reliability and stability of soldering, further affect the effective service life of the product, and meanwhile, the risk of cold soldering exists in the soldering area or the risk of no effective soldering in the partial area rises, so that the heat conduction between the heat conducting disc 210 and the bottom plate 110 may be affected, the liquid is heated unevenly, and the noise reduction effect of the liquid heater is further affected.

It will be appreciated that the thickness of the tab 230 after lamination may be a suitable lamination thickness of 0.3, 0.26, 0.5, etc.

Further, the diameter of the soldering lug 230 is smaller than the diameter of the heat conductive plate 210. By the arrangement, the soldering lug 230 is positioned in the coverage area of the heat conduction disc 210 and the bottom plate 110, so that the soldering lug 230 is prevented from overflowing after being melted during welding, and other performances of a product are further influenced; while satisfying the welding requirements between the heat conductive plate 210 and the bottom plate 110.

Further, the ratio of the diameter of the soldering lug 230 to the diameter of the heat conductive plate 210 is 0.7 to 0.95. With the arrangement, the soldering lug 230 is located in the coverage area of the heat conducting disc 210 and the bottom plate 110, the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting disc 210 is 0.7 to 0.95, wherein the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting disc 210 is 0.7, which is the lowest limit of the welding strength between the heat conducting disc 210 and the bottom plate 110, if the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting disc 210 is lower than 0.7, the welding strength between the heat conducting disc 210 and the bottom plate 110 is insufficient, the connection between the bottom plate 110 and the heat conducting disc 210 is easy to loosen or damage in the using or moving process of the liquid heater, the effective service life of the product is influenced, and meanwhile, the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting disc 210 is lower than 0.7, so that the soldering lug 230 cannot be evenly distributed between the bottom plate 110 and the heat conducting disc 210 after being melted, and the problem that virtual welding exists in a welding area or part of the area is not effectively welded is solved, the heat conducting uniformity of the bottom plate 110 and the heat conducting disc 210 is influenced, and the noise reducing effect of the liquid heater is reduced; wherein, the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting disc 210 is 0.95 to meet the highest upper limit of the welding requirement between the heat conducting disc 210 and the bottom plate 110, if the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting disc 210 is higher than 0.95, the soldering lug 230 overflows after melting during welding, which affects other properties of the product, and also does not meet the welding requirement between the heat conducting disc 210 and the bottom plate 110, and at the same time, the uniformity of welding between the heat conducting disc 210 and the bottom plate 110 is also affected, so that the uniformity of heat conduction between the bottom plate 110 and the heat conducting disc 210 is reduced, further the uniformity of heating liquid is reduced, and the noise reduction effect of the liquid heater is further affected.

It will be appreciated that the ratio of the diameter of the soldering lug 230 to the diameter of the heat conducting plate 210 may be suitably 0.7, 0.83, 0.95, etc.

In order to achieve good compatibility between the welded component and the substrate, the substrate of the soldering lug 230 and the heat conducting plate 210 are made of the same metal material. By this arrangement, the base material of the soldering lug 230 and the heat conduction plate 210 are made of the same metal material, and the same metal material has similar chemical composition, mechanical property and thermal expansion coefficient, so that good compatibility between the soldering part and the base material can be realized. Further, the welding non-uniformity between the heat conducting disc 210 and the bottom plate 110 can be reduced, the welding uniformity is improved, and the welding quality between the heat conducting disc 210 and the bottom plate 110 is improved; the bearing capacity of the welding area between the heat conducting disc 210 and the bottom plate 110 in a stress environment is ensured; and avoids stress concentration and microcrack generation. The arrangement ensures the quality and reliability of the welding between the heat conducting plate 210 and the bottom plate 110, and further ensures the effective service life of the product; meanwhile, the uniformity of welding between the heat conducting disc 210 and the bottom plate 110 is guaranteed, so that the heat conducting disc 210 and the bottom plate 110 conduct heat uniformly, liquid is heated uniformly, noise is reduced, and the use experience of a user is improved.

Further, the heat conducting plate 210 is an aluminum plate, and the soldering lug 230 is an aluminum base material and solder composite sheet. Through this setting, the coefficient of heat conductivity of aluminium is high, and heat can be transmitted to the welding area between heat conducting disc 210 and bottom plate 110 rapidly during the welding, and the temperature of welding area is even, has guaranteed welding quality, has further guaranteed the effective life of product. In addition, the aluminum has high heat conductivity coefficient and higher welding speed, so that the time consumed in the welding process is reduced, and the production efficiency of products is improved.

For more uniform welding, the lug 230 is configured in a circular or polygonal structure. Referring to fig. 2 and 3, the tab 230 has a circular structure. Through this setting, the lug 230 is constructed into circular or polygonal structure, circular or polygonal can be better match lid heat conduction dish 210 and the welded area of bottom plate 110, and then make the welded area that the lug 230 can be better cover between heat conduction dish 210 and the bottom plate 110, thereby provide bigger welded area and heat conduction area, the welded area exists the rosin joint or the risk that partial area does not have effective welding reduces, make the welding between heat conduction dish 210 and the bottom plate 110 even, guaranteed bottom plate 110 and heat conduction dish 210 heat conduction homogeneity, further promote the liquid heater and fall the efficiency of making an uproar. And simultaneously, the welding area and the heat conduction area are larger, so that the welding strength and the reliability between the heat conducting disc 210 and the bottom plate 110 can be ensured, and the effective service life of the product can be ensured.

Referring to fig. 2 and 3, further, the soldering lug 230 is arranged coaxially with the heat conductive plate 210. Through this setting, the lug 230 is arranged with heat conduction dish 210 coaxial, the lug 230 is circular or polygonal structure, make the projection of the geometric center of lug 230 on heat conduction dish 210 be in heat conduction dish 210 geometric center, the distance of lug 230 edge to heat conduction dish 210 welded zone edge is unanimous, the distance of lug 230 after melting flow heat conduction dish 210 welded zone edge is unanimous, make the lug 230 after melting can evenly be covered between bottom plate 110 and the heat conduction dish 210, reduce the welded area and have the rosin joint or the partial region does not have effective welded risk reduction, weld evenly between heat conduction dish 210 and the bottom plate 110, guaranteed bottom plate 110 and heat conduction dish 210 heat conduction homogeneity, further promote liquid heater and fall the efficiency of making an uproar.

To accommodate different types of liquid heaters and different thicknesses of the bonding pads 230, a plurality of bonding pads 230 are disposed between the thermally conductive plate 210 and the base plate 110, and the plurality of bonding pads 230 are stacked together. For example, referring to fig. 2, the number of tabs 230 is two, and referring to fig. 3, the number of tabs 230 is three. Through the arrangement, the plurality of soldering lugs 230 are arranged between the heat conducting disc 210 and the bottom plate 110, the number of soldering lugs 230 can be flexibly selected according to the thickness of the soldering lugs 230, the situation that the soldering lugs 230 are insufficient in number to cause insufficient quantity of molten soldering lugs 230 in part of outer ring areas to connect the heat conducting disc 210 with the bottom plate 110, uneven welding between the heat conducting disc 210 and the bottom plate 110 is caused, the risk of insufficient welding in the welding areas or insufficient welding in part of areas is increased, the noise reduction effect of the liquid heater is influenced, or the soldering lugs 230 are too much, the soldering lugs 230 overflow after being molten, other properties of products are influenced, and the normal production requirements of the products are not met; meanwhile, the plurality of soldering lugs 230 are stacked together, the horizontal distribution condition of the soldering lugs 230 between the heat conducting disc 210 and the bottom plate 110 is not changed, the distribution of the soldering lugs 230 between the heat conducting disc 210 and the bottom plate 110 is uniform, and therefore the welding between the heat conducting disc 210 and the bottom plate 110 is uniform under the condition of ensuring the plurality of soldering lugs 230, and the noise reduction effect of the liquid heater is not affected. This arrangement can accommodate different lug 230 thicknesses, and then can flexibly weld against different lug 230 thicknesses.

Referring to fig. 4, the base plate 110 has a recess 120 protruding upward, the recess 110 is positioned opposite to the heat generating member 220, and the soldering lug 230 is melted to fill the recess 110. The liquid heater needs to pass the dry combustion method test before leaving the factory, because the heat of the heating element 220 is relatively concentrated, the noise difference before and after the dry combustion method test of the product is larger, through the setting, the groove is formed in the position of the corresponding heating element 220 on the liner, so that the bottom plate 110 is far away from the heat conducting disc 210 in the position of the heating element 220, the thickness of the welding lug 230 after melting is thicker, the heat concentration is reduced, the noise value difference before and after the dry combustion method test of the liquid heater is solved, the noise reduction performance of the liquid heater is ensured not to change after the dry combustion, and the use experience of a user is further ensured.

It can be appreciated that the position of the groove 110 is opposite to the position of the heat generating element 220, and the shape of the groove 110 is adapted to the heat generating element 220, and may be arc-shaped, semi-arc-shaped, C-shaped, etc. to be adapted to the heat generating element 220.

It will be appreciated that, for ease of welding, the base plate 110 and the heat conducting plate 210 may be integrally formed in a flat plate shape, or at least have two flat surfaces arranged opposite one another, and other portions may be configured as profiled surfaces. Specifically, the bottom plate 110 includes a first plane, the heat conducting plate 210 includes a second plane, the first plane and the second plane are disposed opposite to each other, the second plane is located below the first plane, the soldering lug 230 is filled between the first plane and the second plane after melting, the first plane and the second plane are melted and welded by the soldering lug 230, so as to ensure the welding effect, and the groove 110 is designed on the first plane to solve the noise value difference before and after the dry burning test of the liquid heater.

The foregoing embodiments are provided for further explanation of the present utility model and are not to be construed as limiting the scope of the present utility model, and some insubstantial modifications and variations of the present utility model, which are within the scope of the utility model, will be suggested to those skilled in the art in light of the foregoing teachings.

Claims (10)

1. The utility model provides a liquid heater, includes inner bag and heating element, and heating element includes the heat conduction dish and establishes the piece that generates heat on the heat conduction dish, and the bottom of inner bag has the bottom plate, and the heat conduction dish welds on the bottom plate of inner bag, its characterized in that: at least one soldering lug is arranged between the heat conducting disc and the bottom plate, and the heat conducting disc is welded on the bottom plate after the soldering lug is melted.

2. A liquid heater as claimed in claim 1, wherein: the bottom plate is provided with an upward protruding groove, the position of the groove is opposite to the position of the heating element, and the groove is filled after the welding lug is melted.

3. A liquid heater as claimed in claim 2, wherein: the bottom plate comprises a first plane, the heat conducting disc comprises a second plane, the first plane and the second plane are oppositely arranged, the second plane is located below the first plane, the groove is formed in the first plane, and the soldering lug is filled between the first plane and the second plane after being melted.

4. A liquid heater as claimed in claim 1, wherein: and a plurality of welding lugs are arranged between the heat conducting disc and the bottom plate and are stacked together.

5. A liquid heater as claimed in claim 4, wherein: the thickness of the soldering lug is 0.1-0.15 mm, the number of the soldering lugs is two or three, or the thickness of all soldering lugs after being laminated is not more than 0.5mm.

6. A liquid heater as claimed in claim 1, wherein: the base material of the soldering lug and the heat conducting disc are made of the same metal material.

7. A liquid heater as claimed in claim 6, wherein: the heat conducting disc is an aluminum disc, and the soldering lug is an aluminum base material and solder composite sheet.

8. A liquid heater as claimed in claim 1, wherein: the diameter of the soldering lug is smaller than that of the heat conducting disc.

9. A liquid heater as claimed in claim 8, wherein: the ratio of the diameter of the soldering lug to the diameter of the heat conducting plate is 0.7 to 0.95.

10. A liquid heater as claimed in any one of claims 1 to 9, wherein: the lug is configured in a circular or polygonal configuration.