CN201393310Y

CN201393310Y - Bottom heating structure of electrical appliance

Info

Publication number: CN201393310Y
Application number: CN200920005644U
Authority: CN
Inventors: 吴益诚
Original assignee: SENQUAN CO Ltd
Current assignee: SENQUAN CO Ltd
Priority date: 2009-04-07
Filing date: 2009-04-07
Publication date: 2010-01-27
Anticipated expiration: 2019-04-07

Abstract

The utility model relates to a bottom heating structure of an electrical appliance. The bottom end of the heating container body of the electrical appliance is provided with a bottom thick film heater. The bottom thick film heater is formed in such a manner that a heat transferring substrate which is printed with an insulating medium layer which is covered by an electric heating element resistance layer, the heat transferring substrate is provided with a conductor connected with the electric heating element resistance layer, and finally an insulating protective glaze layer is coated on the electric heating element resistance layer. In this way, the bottom thick film heater can heat the objects in a heating container directly so that the utility model has better thermal conductivity and heating efficiency, and can avoid noise.

Description

The bottom heating arrangement of electrical appliance

Technical field

The utility model relates to a kind of bottom heating arrangement of electrical appliance, refers in particular to a kind of the have preferable heat conductivity and the efficiency of heating surface, and can avoid producing the bottom heating arrangement of electrical appliance of the usefulness of noise.

Background technology

See also Fig. 1, it discloses a kind of common heating arrangement 1 that is used in as class electrical appliances such as the machine of beginning to drink, water dispenser, thermos at present.This heating arrangement 1 in the form of a ring and frame be trapped among the periphery wall of the heating container 2 of electrical appliance; this heating arrangement 1 is that an electric heating element (alloy hot material) is coated on; in the following insulating trip; and the insulating trip skin has the sheet metal protection; when the electric heating element adstante febre; itself and 2 of heating containers are indirect transfer heat energy; therefore heat conductivity and efficient are relatively poor; add that ring-type heating arrangement 1 is coated on the periphery wall of heating container 2; packing ring because of heating container 2 is aging easily; and make steam in the heating container 2 or fluid seepage to heating arrangement 1 place; cause heating arrangement 1 fault or produce unusual start, lack the fail safe when using.

In addition, please consult tw Taiwan letters patent book number M306846, M307369 and the novel patent case of M308597 again, above-mentioned each novel patent case all is the designs at the bottom sheet heating structure of liquid container.Because the bottom sheet heating structure of above-mentioned each novel patent case is coated on electric heating element between upper and lower insulating trip; and the insulating trip skin is protected with sheet metal again; therefore when the electric heating element adstante febre, be indirect transfer heat energy between itself and heating container, so heat conductivity and efficient are relatively poor.Again, the composition processing that general bottom adds thermotectonics roughly all is the bottom outside that electric heating element are fixed in heating container with spot welding, oil pressure or screw locking mode, can produce the gap because of intermetallic rising-heat contracting-cold after long-term the use, cause thermal efficiency to successively decrease and produce noise.

The utility model content

The purpose of this utility model provides a kind of bottom heating arrangement of electrical appliance, and this bottom heating arrangement possesses the preferable heat conductivity and the efficiency of heating surface are arranged, and can avoid the generation of noise.

For reaching above-mentioned purpose, the utility model provides a kind of bottom heating arrangement of electrical appliance, and it is at the place, bottom of the heating container body of electrical appliance one bottom thick film heater to be set; This bottom thick film heater is to print insulating medium layer on a heat transfer base material; and on insulating medium layer coating electric heating element resistive layer; and the conductor that is connected with the electric heating element resistive layer is set on the heat transfer base material, on the electric heating element resistive layer, covers insulation protection glaze layer at last again.

Described heat transfer base material adopts stainless steel.

The utility model and existing structure the utlity model has following advantage in comparison:

Can the content of heating container inside directly be heated by bottom of the present utility model thick film heater, make it have the preferable heat conductivity and the efficiency of heating surface, and can avoid producing the usefulness of noise.

Description of drawings

The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,

Fig. 1 is the stereogram of existing bottom heating arrangement;

Fig. 2 is the three-dimensional exploded view of bottom of the present utility model heating arrangement;

Fig. 3 is the three-dimensional combination figure of bottom of the present utility model heating arrangement;

Fig. 4 is the combination of side view of bottom of the present utility model heating arrangement.

Description of reference numerals:

Prior art:

1 heating arrangement, 2 heating containers

The utility model:

3 heating container bodies, 4 bottom thick film heaters

41 heat transfer base materials, 42 insulating medium layers

43 electric heating element resistive layers, 44 conductors

45 insulation protection glaze layers

Embodiment

Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.

See also Fig. 2～Fig. 4; Wherein, Fig. 2 is the three-dimensional exploded view of looking up of bottom of the present utility model heating arrangement; Fig. 3 is the combination upward view of bottom of the present utility model heating arrangement; Fig. 4 is the combination of side view of bottom of the present utility model heating arrangement.

The bottom heating arrangement of electrical appliance of the present utility model mainly is at the place, bottom of the heating container body 3 of electrical appliance one bottom thick film heater 4 to be set; This bottom thick film heater 4 is printing insulating medium layers 42 on a heat transfer base material 41, and on insulating medium layer 42 coating electric heating element resistive layer 43, and the conductor 44 that is connected with electric heating element resistive layer 43 is set on heat transfer base material 41, on electric heating element resistive layer 43, covers insulation protection glaze layer 45 at last again; Wherein, this heat transfer base material 41 is to adopt stainless steel.

In view of the above, bottom of the present utility model heating arrangement is by the bottom that will this bottom thick film heater 4 be installed in the heating container body 3 of electrical appliance, this bottom thick film heater 4 can directly be heated the content of heating container body 3 inside, and therefore have the preferable heat conductivity and the efficiency of heating surface, and can avoid producing the usefulness of noise.

Because the big (40～60W/in of bottom thick film heater 4 power densities ²), be the several times of alloy electrothermal material in the general home electrical heater, and can start, and the surperficial firing rate of this electric heating element resistive layer 43 can reach 200 ℃/s～300 ℃/s with low-voltage, its toggle speed is quite fast, and this can not reach for general alloy electrothermal material; Add that these bottom thick film heater 4 mechanical strength height, durable, anti-vibration, heat-resistant impact ability are strong, can not produce high-temperature brittleness as alloy electrothermal material, its electric heating element resistive layer 43 and heat transfer base material 41 binding abilities are strong again, so anti-machinery of energy and thermal shock, unlike traditional electric heater because of processing and assembling improper generation gap, and allow heat efficiency variation, and electrothermal alloy material oxidation easily in use in addition, its useful life is shorter.Moreover the bottom thick film heater 4 with this electric heating element resistive layer 43 is the bottom that is directly arranged in heating container body 3, so can carry out direct-fired action to the content in the heating container body 3, the heat efficiency of its generation is more than 93%, than traditional electric heater adopt indirect more economize can with safety.

In sum, the utility model embodiment can reach desired use effect, again its disclosed concrete structure, not only do not seen in the like product, before also not being disclosed in application, meet the regulation and the requirement of Patent Law fully, the existing utility application that in accordance with the law proposes.

The above only is the schematic embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.

Claims

1, a kind of bottom heating arrangement of electrical appliance is characterized in that: the bottom heating arrangement of described electrical appliance is at the place, bottom of the heating container body of electrical appliance one bottom thick film heater to be set; Described bottom thick film heater is to print insulating medium layer on a heat transfer base material; and on described insulating medium layer coating electric heating element resistive layer; and the conductor that is connected with described electric heating element resistive layer is set on described heat transfer base material, on described electric heating element resistive layer, covers insulation protection glaze layer.

2, the bottom heating arrangement of electrical appliance according to claim 1 is characterized in that: described heat transfer base material adopts stainless steel.