CN201894549U

CN201894549U - Multi-temperature automatic constant-temperature electric kettle

Info

Publication number: CN201894549U
Application number: CN2010206020133U
Authority: CN
Inventors: 刘洪祥
Original assignee: XIANTAO ZHANPENG NEW MATERIAL CO Ltd
Current assignee: XIANTAO ZHANPENG NEW MATERIAL CO Ltd
Priority date: 2010-08-23
Filing date: 2010-10-31
Publication date: 2011-07-13
Anticipated expiration: 2020-10-31

Abstract

The utility model discloses a multi-temperature automatic constant-temperature electric kettle comprising a kettle and a heating device positioned at the bottom of the kettle, wherein the heating device comprises a metal radiating shell, and a high-temperature PTC heating core and a low-temperature PTC heating core are arranged in a cavity of the metal radiating shell. The electric kettle adopts the two PTC heating cores with different temperature and power, the combination of the two PTC heating cores is controlled through a change-over switch to provide the temperature and power at low, medium and high gears, and a temperature control circuit is not needed in circuit design, so as to save a lot of design space. The electric kettle has the advantages of noiseless startup, high thermal conversion efficiency, little energy consumption, low cost, safety in use and the like.

Description

Many temperature automatic constant-temperature insulating pot

Technical field

The utility model relates to a kind of insulating pot, especially relates to a kind of many temperature automatic constant-temperature insulating pot.

Background technology

The traditional electrical kettle generally adopts temperature-control circuit to the control of heating-up temperature, by adjusting the size of controlling the kettle heating-up temperature by the heater block size of current.Because existing temperature-control circuit generally adopts electronic components such as controllable silicon, these electronic components belong to easily worn part, and use or improper use for a long time can cause temperature-control circuit to lose efficacy.After temperature-control circuit lost efficacy, gently then insulating pot can not heat, and uncontrolled heating appears in heavy then insulating pot, so that produced high temperature and cause the security incident generation.

This external some occasion needs to continue to be stored in the insulating pot after the water boiling, therefore requires insulating pot except that having heating function, also should have the constant temperature function.In the prior art, the constant temperature insulating pot adopts two heat-generating pipes, adopts the different heat-generating pipe of power, and one is used for heating, and one is used for constant temperature, but it is big to make lower powered constant temperature heat-generating pipe difficulty, complex process, cost height.

Summary of the invention

The purpose of this utility model is at above-mentioned present situation, aims to provide a kind of many grades of temperature that have, and it is little to take up room, the automatic constant-temperature insulating pot that power consumption is little, thermal conversion efficiency is high, cost is low, safe in utilization.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: many temperature automatic constant-temperature insulating pot, comprise kettle and the heater members that is positioned at the kettle bottom, described heater members comprises a heat dissipation metal housing, is provided with high-temp PTC heat generating core and low temperature PTC heat generating core in the die cavity of described heat dissipation metal housing.

As preferably, the electrode at the described high-temp PTC heat generating core back side is connected back formation one public electrode and is connected with the live wire end of power supply with the electrode at the low temperature PTC heat generating core back side, the electrode in high-temp PTC heat generating core front is connected with the zero line side of power supply through a change-over switch with the electrode in low temperature PTC heat generating core front.

As preferably, be provided with insulating trip between described high-temp PTC heat generating core and the low temperature PTC heat generating core, be wrapped with the yellow ply of paper of insulation at high-temp PTC heat generating core and low temperature PTC heat generating core.

The utlity model has advantages such as temperature transition is convenient, thermal conversion efficiency is high, power consumption is little, cost is low, safe in utilization.Have specifically following some.

1. many grades of automatic constant-temperatures, adopt two PTC heat generating cores of different temperatures and power, combination by between two PTC heat generating cores of change-over switch control can provide basic, normal, high third gear temperature and power, therefore is easy to realize the conversion of kettle heating and keeping warm mode.

2. based on the automatic constant-temperature characteristic of PTC, in circuit design, do not need temperature-control circuit, thereby save a lot of design spaces, reduced production cost, safe in utilization.

3. it is little to consume energy, and PTC promptly enters keeping warm mode automatically after reaching maximum temperature, and this moment, PTC was in high-impedance state, made that the electric current in the circuit is very little, and consumed power is little.

The thermal conversion efficiency height, start noiseless, PTC is not rubescent under "on" position, can all convert electric energy to heat energy, the electric conversion efficiency height.

Description of drawings

Fig. 1 is the structural representation of the utility model insulating pot;

Fig. 2 is the cross-sectional view of the utility model heater members;

Fig. 3 is the structural representation of PTC heat generating core shown in Figure 2;

Fig. 4 is the side view of PTC heat generating core shown in Figure 2;

Fig. 5 is a circuit diagram of the present utility model;

The position view of contact chip in change-over switch when Fig. 6 is the low temperature shelves;

The position view of contact chip in change-over switch when Fig. 7 is middle temperature shelves;

The position view of contact chip in change-over switch when Fig. 8 is the high temperature shelves.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model insulating pot, and Fig. 2 is the cross-sectional view of heater members.By Fig. 1 in conjunction with Fig. 2 as can be known, this many temperature automatic constant-temperature insulating pot mainly is made up of the heater members 1 of kettle 2 and its bottom, and wherein heater members 1 has a heat dissipation metal housing 3, and this heat dissipation metal housing 3 adopts the good conductor of heat such as aluminium, copper to make.In the die cavity of heat dissipation metal housing 3, be provided with PTC heat generating core 4.

Fig. 3 is the heat generating core structural representation, and Fig. 4 is the side view of heat generating core shown in Figure 3, and Fig. 5 is a circuit diagram of the present utility model.In conjunction with Fig. 3, Fig. 4 and Fig. 5 as can be known, PTC heat generating core 4 is made up of high-temp PTC heat generating core 8 and low temperature PTC heat generating core 6, and be provided with insulating trip 7 between high-temp PTC heat generating core 8 and the low temperature PTC heat generating core 6, be wrapped with the yellow ply of paper 5 of insulation at high-temp PTC heat generating core 8 and low temperature PTC heat generating core 6.

The electrode 101 at high-temp PTC heat generating core 8 back sides is connected back formation one public electrode 11 and is connected with the live wire end L of power supply V by lead 10 with the electrode 102 at low temperature PTC heat generating core 6 back sides, electrode 11 wraps with the outer glue type silicon rubber insulation sleeve pipe 9 of interior fibre with the junction of lead 10, the electrode 81 in high-temp PTC heat generating core 8 fronts is electrically connected with the B contact point of change-over switch K by lead 13, the electrode 61 in low temperature PTC heat generating core 6 fronts is electrically connected with the A contact point of change-over switch K by lead 14, and the C contact point of change-over switch K is connected with the zero line side M of power supply V.

Change-over switch K can adopt band switch or electronic switch, and in circuit diagram shown in Figure 5, change-over switch comprises A, B, C contact point and metal connecting sheet 12, and metal connecting sheet 12 can be movable back and forth between A, B, C contact point.

When kettle heating or constant temperature, change-over switch K can control three kinds of duties of heater members 1.First kind of state is: as shown in Figure 6, when the metal connecting sheet among the change-over switch K 12 is positioned at the position of connecting contact point A, C, low temperature PTC heat generating core 6 is connected power supply, because the temperature of low temperature PTC heat generating core 6 is lower than high-temp PTC heat generating core 8, so the power ratio of this moment is less, can be used as the low temperature shelves.Second kind of state is: as shown in Figure 7, when metal connecting sheet 12 was positioned at the position of connecting contact point B, C, high-temp PTC heat generating core 8 was connected power supply, and high-temp PTC heat generating core 8 temperature are higher, and the power ratio low temperature shelves of this moment are high, temperature shelves in can be used as; The third state is: as shown in Figure 8, when metal connecting sheet 12 was positioned at the position of connecting contact point A, B, C, low temperature PTC heat generating core 6, high-temp PTC heat generating core 8 were connected power supply simultaneously, and the power maximum of this moment can be used as the high temperature shelves.

Claims

1. the insulating pot of temperature automatic constant-temperature more than a kind comprises kettle and is positioned at the heater members of kettle bottom that described heater members comprises a heat dissipation metal housing, it is characterized in that being provided with high-temp PTC heat generating core and low temperature PTC heat generating core in the die cavity of described heat dissipation metal housing.

2. many temperature automatic constant-temperature insulating pot according to claim 1, the electrode that it is characterized in that the described high-temp PTC heat generating core back side is connected the back and forms a public electrode and be connected with the live wire end of power supply with the electrode at the low temperature PTC heat generating core back side, the electrode in high-temp PTC heat generating core front is connected with the zero line side of power supply through a change-over switch with the electrode in low temperature PTC heat generating core front.

3. many temperature automatic constant-temperature insulating pot according to claim 1 is characterized in that being provided with insulating trip between described high-temp PTC heat generating core and the low temperature PTC heat generating core, is wrapped with the yellow ply of paper of insulation at high-temp PTC heat generating core and low temperature PTC heat generating core.