CN208424812U - A kind of subregion controllable safety electric hot plate - Google Patents

Abstract

The utility model discloses a kind of subregion controllable safety electric hot plate, including bottom case, top cover and several electric heating blocks；The top cover is mounted on the upper end of bottom case, the top cover and bottom case are encircled into the shell of internal first cavity, the electric heating block is installed in first cavity, several electric heating blocks are evenly distributed in the lower end of top cover, and the upper side of the electric heating block and top cover downside are welded.Here electric heating block is main heater element, is welded for the state of suspension and the downside of top cover, therefore there is no the effects of heat transmitting to bottom case, and only there are air layers between electric heating block and bottom case, has preferable heat insulation.

Description

A kind of subregion controllable safety electric hot plate

Technical field

The utility model relates to the technical field of detection device more particularly to a kind of subregion controllable safety electric hot plates.

Background technique

Heating element is equipped with for the metal plate of container bottom, which is usually be laid in glass, the ceramics of insulation Or the resistance heating trace in glass ceramic substrate.Resistance heating trace is arranged in the shape of a spiral, supply terminals necessarily one A setting causes power supply terminal setting dispersion in outer part in middle part, another setting.Insulating substrate and between due to heat it is swollen Swollen coefficient is different, and when temperature is increased to certain temperature, substrate is easy cracking, and resistance heating trace is made to open a way, and it is existing to generate electric leakage As.It is uneven in assembly since metal plate has certain toughness furthermore when by the metal plate mounted in flap under plastic containers When weighing apparatus, once there is a point deformation, insulating layer thereon is easy to burst apart, and causes the damage of heating element.

Water-bath, usually Unit heating used in most of laboratory, and temperature is difficult to control, and needs constantly Water temperature is tested, when carrying out multiple experimental datas while detecting, due to not having instantaneity, is caused to experimental data Inaccuracy, so carried out in the same equipment it is multiple experiment simultaneously carry out, it can be ensured that scientific preciseness, it is ensured that detect Quality and confidence level.

The utility model is mainly to realize the electric boiling plate that multi-faceted heating is carried out on the same water-bath, solves electricity and adds The single problem in hot plate heating temperature region.

Utility model content

In view of the shortcomings of the prior art, the utility model provides a kind of subregion controllable safety electric hot plates, can add in electricity Muti-piece temperature region, and the temperature interference very little between different temperatures region are provided on hot plate.

The utility model is realized by following technological means solves above-mentioned technical problem:

A kind of subregion controllable safety electric hot plate, including bottom case, top cover and several electric heating blocks；The top cover is mounted on bottom The upper end of shell, the top cover and bottom case are encircled into the shell of internal first cavity, are equipped with the electric heating in first cavity Block, several electric heating blocks are evenly distributed in the lower end of top cover, and the upper side of the electric heating block and top cover downside are welded；

The electric heating block is in the box body shape of internal second cavity, and the both ends of electric heating block described in box body shape are mounted on terminals Son, one end of the connecting terminal extend in the second cavity, and the other end of the connecting terminal extends on the outside of electric heating block, institute It states connecting terminal and heating wire is installed between one end of the second cavity, the connecting terminal is between one end on the outside of electric heating block Live wire is connected, rotation adjusting knob is installed on the electric wire, is also filled with heat-conducting layer in second cavity；

Heat induction device and switch are also equipped on several described electric heating blocks, described switch is mounted on the outer of bottom case Side, into the second cavity, the outside of the heat induction device matches the internal stretch of the heat induction device with switch.

Preferably, the bottom case is mainly made of ceramic materials.

Preferably, the shell of the top cover and heat block is that metal material is made, and the upper side of the top cover is stained with One layer of rust-preventing film.

Preferably, the heat induction device includes tubular metal slot, contact and memory alloy wire, and the contact and memory are closed Spun gold is installed in tubular channel, and one end of the memory alloy wire and the bottom of tubular channel connect, the memory alloy wire The connection of one end of the other end and contact, the other end of the contact are matched with switch.

Utility model has the advantages that electric heating block here is main heater element, state and top for suspension The downside of lid is welded, therefore there is no the effects of heat transmitting to bottom case, and only there are air layer, tools between electric heating block and bottom case There is preferable heat insulation, prevents heat from radiateing and cause danger that is inefficient, while preventing from causing operator, due to Electric heating block is each other air layer, so can carry out the heating of multizone when electrically heated on electric hot plate, realizes electricity Various temperature on hot plate carries out simultaneously.

Detailed description of the invention

Fig. 1: for the utility model structure diagram.

Fig. 2: for the utility model heat induction device and switch Local map.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Up, down, left, right, before and after herein show standard both with respect to Fig. 1.

The utility model is mainly the electric hot plate of the bottoms heating such as water-bath.

A kind of subregion controllable safety electric hot plate as shown in Figure 1:, including bottom case 1, top cover 2 and several electric heating blocks 3；Institute State the upper end that top cover 2 is mounted on bottom case 1, the top cover 2 is encircled into the shell of internal first cavity 11 with bottom case 1, and described first The electric heating block 3 is installed, several electric heating blocks 3 are evenly distributed in the lower end of top cover 2, the electric heating block in cavity 11 3 upper side and 2 downside of top cover are welded；

Here electric heating block is main heater element, is welded for the state of suspension and the downside of top cover 2, therefore right There is no the effects of heat transmitting for bottom case 1, and only there are air layers between electric heating block and bottom case, have preferable heat insulation, prevent Only heat, which is radiate, causes danger that is inefficient, while preventing from causing operator.

The electric heating block 3 is in the box body shape of internal second cavity 31, and the both ends of electric heating block 3 described in box body shape, which are mounted on, to be connect Line terminals 32, one end of the connecting terminal 32 extend to 31 in the second cavity, and the other end of the connecting terminal 32 extends to 3 outside of electric heating block, the connecting terminal 32 are equipped with heating wire 33, the connecting terminal 32 between one end of the second cavity 31 Live wire 34 is connected between the one end in 3 outside of electric heating block, is equipped on the electric wire 34 and is rotated adjusting knob 35, described second Heat-conducting layer is also filled in cavity 31；

The heat-conducting layer is the good insulating materials of thermal conductivity, such as magnesia powder, has certain porosity, provides The certain telescopic level of heating wire 33, prevents harm caused by expanding with heat and contract with cold, and connects live wire between the outboard end of terminals, The heating efficiency of the adjustable heating wire of knob on electric wire, knob are the resistance installed additional by inside, are completed to heater strip electricity The control of stream.

Heat induction device 4 and switch 5 are also equipped on several described electric heating blocks 3, the switch 5 is mounted on bottom case 1 outside, the internal stretch of the heat induction device 4 is into the second cavity 31, the outside of the heat induction device 4 and switch 5 It matches.

The bottom case 1 is mainly made of ceramic materials.

The shell of the top cover 2 and heat block 3 is that metal material is made, and the upper side of the top cover 2 is stained with one layer Rust-preventing film 21.

As shown in Figure 2: the heat induction device 4 includes tubular metal slot 41, contact 42 and memory alloy wire 43, the touching First 42 and memory alloy wire 43 be installed in tubular channel 41, the bottom of one end of the memory alloy wire 43 and tubular channel 41 connects It connects, the other end of the memory alloy wire 43 is connect with one end of contact 42, and the other end and switch 5 of the contact 42 match It closes.

Heat induction device 4 is mainly used for danger caused by placing the heating of electric hot plate sky, when water-bath or similar heating Installation makes in purposes equipment, when electric hot plate dryouies moisture, into sky heating, when without the case where additional absorbent source, heat-conducting layer Temperature increases, and memory alloy wire is caused to be straightened by being bent, and band moving contact resists switch button 51, and switch button 51 connects energization Contact 52 separates, and plays the effect of power-off, substantially increases security level, after artificial discovery, presses switch 5, equipment again Normal operation again.

It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element.

Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims (4)

1. a kind of subregion controllable safety electric hot plate, it is characterised in that: including bottom case, top cover and several electric heating blocks；The top Lid is mounted on the upper end of bottom case, and the top cover and bottom case are encircled into the shell of internal first cavity, install in first cavity There is the electric heating block, several electric heating blocks are evenly distributed in the lower end of top cover, the upper side and top cover of the electric heating block Downside welding；

The electric heating block is in the box body shape of internal second cavity, and the both ends of electric heating block described in box body shape are mounted on connecting terminal, One end of the connecting terminal extends in the second cavity, and the other end of the connecting terminal extends on the outside of electric heating block, described Connecting terminal is equipped with heating wire between one end of the second cavity, and the connecting terminal connects between one end on the outside of electric heating block It is connected to electric wire, rotation adjusting knob is installed on the electric wire, is also filled with heat-conducting layer in second cavity；

Heat induction device and switch are also equipped on several described electric heating blocks, it is described to switch the outside for being mounted on bottom case, Into the second cavity, the outside of the heat induction device matches the internal stretch of the heat induction device with switch.

2. a kind of subregion controllable safety electric hot plate according to claim 1, it is characterised in that: the bottom case is mainly by ceramics Material is made.

3. a kind of subregion controllable safety electric hot plate according to claim 1, it is characterised in that: the top cover and heat block Shell is that metal material is made, and the upper side of the top cover is stained with one layer of rust-preventing film.

4. a kind of subregion controllable safety electric hot plate according to claim 1, it is characterised in that: the heat induction device includes Tubular metal slot, contact and memory alloy wire, the contact and memory alloy wire are installed in tubular channel, the memorial alloy One end of silk and the bottom of tubular channel connect, and the other end of the memory alloy wire and one end of contact connect, the contact The other end is matched with switch.