CN103822290A

CN103822290A - Safety oil charging type electric heater

Info

Publication number: CN103822290A
Application number: CN201410065488.6A
Authority: CN
Inventors: 刘小再
Original assignee: FOSHAN SHUNDE FUDIWEI ELECTRICAL APPLIANCE Co Ltd
Current assignee: ZHONGSHAN JUNGUO ELECTRICAL APPLIANCES CO., LTD.
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2014-05-28
Anticipated expiration: 2034-02-26
Also published as: CN103822290B

Abstract

The invention provides a safety oil charging type electric heater which comprises a plurality of sets of heat dissipation pieces. The sets of heat dissipation pieces are connected to form an inner cavity which is filled with conduction oil, electric heating bars used for heating the conduction oil are mounted in the inner cavity, the heat dissipation pieces are provided with welding point portions and deformation portions, the deformation portions are provided with one micro switch, the electric heating bars and the micro switch are electrically connected to a main control circuit board, the micro switch is pushed and pressed through deformation, so that the micro switch controls the electrification condition of the electric heater, it is effectively guaranteed that internal pressure of the electric heater operates within a safety range, the problem that the pieces explode to burn people due to excessive pressure is fundamentally avoided, the fire danger that the conduction oil combusts due to the fact that power is still on is avoided, and the safety oil charging type electric heater has the advantages of being simple in structure, firm and durable and low in cost.

Description

A kind of safe oil charging type electric heater

Technical field

The present invention relates to electric heater field, relate in particular to and a kind ofly can prevent that fin from causing quick-fried or safe oil charging type electric heater on fire because internal pressure is excessive.

Background technology

Oil charging type electric heater is mainly that electric energy is passed through in closed cavity heat-conducting oil heating, make heat arrive and supply people's heating in the air by fin conductive, but, in the inner chamber of sealing, heat, can make chamber pressure increase, in the time that chamber pressure is not controlled, easily there is causing because pressure is excessive the problem of fin explosion (quick-fried), leakage of oil, cut off after leakage of oil as not in time heating power supply, allow heat-generating pipe continue the words of heating, in the time that heat-generating pipe surface temperature reaches conduction oil point of origin, will cause fire incident.

To this, oil charging type electric heater on the market mainly detects the temperature of body surface by temperature limiter, adopts pressure control without any a kind of oil charging type electric heater.The effect of an indirect controlled pressure is only played in the surface temperature rise of temperature limiter controller, there is larger potential safety hazard in the mode of pressing in this indirect restriction, that is to say, the temperature of heating does not reach before the power-off numerical value of temperature limiter, the internal pressure of fin is increased to dangerous values extremely, and there is quick-fried leakage of oil and danger on fire, specifically there is following inducement on fire:

Example one: when electric heater falls down to the ground, and it is parallel that circulation oil duct in body and ground are approached, and cannot form convection current, makes the position that temperature limiter installs cannot numbered temperature, causes heat-generating pipe to be worked and the hazard of catch fire that causes always.

Example two: when electric heater occurs after leakage of oil, the fuel head in oil duct is inadequate, makes temperature limiter cannot detect concrete temperature, causes heat-generating pipe not stop paying out heat, thereby causes hazard of catch fire.

Example three: in the time that electric heater is worked, the test point displacement of temperature limiter or while damaging, also can cause interior pressure excessive and cause quick-fried, hazard of catch fire.

Summary of the invention

The invention provides a kind of safe oil charging type electric heater, its object is to prevent to press phenomenon excessive and explosion (quick-fried) that cause in electric heater, realizes electric heater and operates under the chamber pressure limiting.

To this, the present invention includes some groups of fin, each group fin compactness connects into an inner chamber, in described inner chamber, load conduction oil, electrical bar for heating this conduction oil is installed in described inner chamber, described fin is provided with solder joint portion and variant part, and this variant part is installed a microswitch, and described electrical bar and microswitch are electrically connected a main control panel.

Described solder joint portion and deformation place are in the positive anterior locations of the fin of first group.

This solder joint portion is provided with several solder joints, and this deformation place is in fin centre position just above, and this solder joint is distributed in the upper and lower end position of this variant part.

Described deformation place is on any one group of fin.

Described deformation place is on this fin arbitrary position just above.

The upper end that described solder joint portion is positioned at this variant part is provided with respectively six solder joints successively, and the lower end that is positioned at this variant part is provided with respectively six solder joints successively.

Between described variant part and this microswitch, be provided with push rod component, variant part pushes the on & off switch of this microswitch by this push rod component.

Described push rod component comprises push rod and depression bar, and this push rod is installed in this depression bar, and the smooth surface that is installed on this variant part of push rod, the on & off switch of this microswitch of power point movable contact of this depression bar, and, between described push rod and depression bar, be provided with thrust spring.

Described push rod component and microswitch are fixed on this fin by a fixed mount respectively.

Described fixed mount is provided with the lug with fin welding.

Beneficial effect of the present invention is the interior pressure of variant part real time reaction electric heater, push up pressure microswitch by being out of shape, make the energising situation of this microswitch control electric heater, and then effectively guarantee electric heater in be pressed in running in safe scope, can fundamentally prevent pressure excessive and cause the danger of quick-fried or the conduction oil that ignites, and have simple in structure, sturdy and durable, the advantage that cost is low.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of most preferred embodiment of the present invention.

Fig. 2 is the front view that Fig. 1 removes protective cover.

Fig. 3 is the schematic diagram of fixed mount.

Fig. 4 is circuit module figure of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing, the invention will be further described, as Fig. 1 illustrates the present invention's preferred embodiment, it comprises some groups of fin 1, respectively organizes compact connection of fin 1 and is formed for loading the inner chamber 2 of conduction oil, and the interior installation of this inner chamber 2 is for heating the electrical bar 3 of this conduction oil.

If Fig. 2 is in conjunction with as shown in Fig. 4, described fin 1 is provided with solder joint portion 11 and variant part 12, this variant part 12 is installed a microswitch 4, described electrical bar 3 and microswitch 4 are electrically connected a main control panel 5, described solder joint portion 11 and variant part 12 are positioned at the positive anterior locations of the fin 1 of first group, further, this solder joint portion 11 is provided with several solder joints, this variant part 12 is positioned at fin 1 centre position just above, this solder joint is distributed in the upper of this variant part 12, lower end position, , the upper end that solder joint portion 11 is positioned at this variant part 12 is provided with respectively six solder joints successively, and the lower end that is positioned at this variant part 12 is provided with respectively six solder joints successively.

According to the actual needs; described variant part 12 is positioned on any one group of fin 1; shown electric heater of Fig. 1 is seven groups of fin; this variant part 12 is arranged on any a group of this seven groups of fin; and this variant part 12 is arranged on described fin 1 arbitrary position just above; in addition, the positive back side of fin 1 or side also belong in protection scope of the present invention.

As Fig. 2 in conjunction with Fig. 3 further carefully stating each parts, between described variant part 12 and this microswitch 4, be provided with push rod component 6, variant part 12 pushes the on & off switch of this microswitch 4 by this push rod component 6, this push rod component 6 comprises push rod 61 and depression bar 62, this push rod 61 is installed in this depression bar 62, and the smooth surface that is installed on this variant part 12 of push rod 61, the button of this microswitch 4 of power point movable contact of this depression bar 62, and, between described push rod 61 and depression bar 62, be provided with thrust spring 63.These spring 63 compression stresses are greater than the action force of microswitch 4 buttons, and have the effect of buffer thrust, and object is that the rigid deformation of variant part 12 is converted into strain, prevent rigid deformation damage microswitch 4.Meanwhile, assurance variant part 12 is heaved distortion, and after power-off, pressure drop variant part shrinks to some extent, presses the button of microswitch 4 by the residue elastic force top of spring 63, all can continue the reliability of power-off after any permanent deformation of assurance appearance.

For convenience of the interactively of fixed mandril assembly 6 and microswitch 4, described push rod component 6 and microswitch 4 are fixed on this fin 1 by a fixed mount 7, and this fixed mount 7 is provided with the lug 71 welding with fin 1.

The solder joint portion 11 of mentioning in the present invention refers in the time making fin 1, position, the edge welded seal of two stamping forming steel discs, be positioned on steel disc again and form solder joint by " spot welding " technique, effect is to increase inner chamber bearing capacity, and is not variant part 12 by the position of " spot welding ".And microswitch 4 is also referred to as closed type microswitch, refer under atmospheric pressure state to be normal energising, in the time that button is touched, be off-position.

Therefore, real-time reflection by variant part 12 to electric heater chamber pressure, and promote microswitch 4 and make electric heater power-off by the tension force of dilatancy, after portion 12 to be deformed restores, can restart and heat, while approaching dangerous values if there is pressure is excessive immediately, cause variant part permanent deformation, electric heater cannot continue to use.That is to say, any pressure anomaly that may cause becomes large, as long as the interior pressure increase in machine exceeds design pressure-bearing value, can realize reliable power-off, ensures safely and reliably people's life staying idle at home.

Above-mentioned specific embodiment is only for the good specific embodiment of effect of the present invention, and all or safe oil charging type electric heaters of being equal to identical with this structure, all in the application's protection domain.

Claims

1. a safe oil charging type electric heater, it comprises some groups of fin (1), each group fin (1) compactness connects into an inner chamber (2), in described inner chamber (2), load conduction oil, electrical bar (3) for heating this conduction oil is installed in described inner chamber (2), it is characterized in that: described fin (1) is provided with solder joint portion (11) and variant part (12), this variant part (12) is installed a closed type microswitch (4), described electrical bar (3) and closed type microswitch (4) electrical connection one main control panel (5).

2. safe oil charging type electric heater according to claim 1, is characterized in that: described solder joint portion (11) and variant part (12) are positioned at the positive anterior locations of the fin (1) of first group.

3. safe oil charging type electric heater according to claim 2, it is characterized in that: this solder joint portion (11) is provided with several solder joints, this variant part (12) is positioned at fin (1) centre position just above, and this solder joint is distributed in the upper and lower end position of this variant part (12).

4. safe oil charging type electric heater according to claim 1, is characterized in that: described variant part (12) is positioned on the optional position of any one group of fin (1).

5. safe oil charging type electric heater according to claim 1, is characterized in that: described variant part (12) is positioned on this fin (1) arbitrary position just above.

6. according to safe oil charging type electric heater described in the arbitrary claim of claim 1 to 5, it is characterized in that: the upper end that described solder joint portion (11) is positioned at this variant part (12) is provided with respectively six solder joints successively, and the lower end that is positioned at this variant part (12) is provided with respectively six solder joints successively.

7. safe oil charging type electric heater according to claim 1, it is characterized in that: between described variant part (12) and this closed type microswitch (4), be provided with push rod component (6), variant part (12) pushes the on & off switch of this closed type microswitch (4) by this push rod component (6).

8. safe oil charging type electric heater according to claim 7, it is characterized in that: described push rod component (6) comprises push rod (61) and depression bar (62), this push rod (61) is installed in this depression bar (62), and the smooth surface that is installed on this variant part (12) of push rod (61), the on & off switch of this closed type microswitch (4) of the power point movable contact of this depression bar (62), and, between described push rod (61) and depression bar (62), be provided with thrust spring (63).

9. safe oil charging type electric heater according to claim 8, is characterized in that: described push rod component (6) and closed type microswitch (4) are fixed on this fin (1) by a fixed mount (7) respectively.

10. safe oil charging type electric heater according to claim 9, is characterized in that: described fixed mount (7) is provided with the lug (71) with fin (1) welding.