CN201476152U

CN201476152U - Heat radiation sandwich layer used for electric warming oven

Info

Publication number: CN201476152U
Application number: CN2009201920782U
Authority: CN
Inventors: 陈毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-31
Filing date: 2009-08-31
Publication date: 2010-05-19
Anticipated expiration: 2019-08-31

Abstract

The utility model discloses a heat radiation sandwich layer used for an electric warming oven, which comprises two unit heat radiation fins (3a), wherein the two unit heat radiation fins (3a) are symmetrically pasted into a cavity on the left and right, the center of the cavity is outwards projected, the periphery of the cavity is in a pasted state, and in addition, the top and the bottom of each unit heat radiation fin (3a) are respectively provided with a first vent hole (31) and a second vent hole (32), wherein the first vent hole (31) is in a long strip shape and is arranged transversely, and the upper edge of the first vent hole (31) in the inside direction of the cavity is punched with a folding edge (31a). Compared with the prior art, the heat radiation sandwich layer of the utility model can form the cavity with the ventilated upper part and lower part, and the air automatic convective flow is realized by using the characteristic that the hot air flow can flow up naturally, so the electric warming oven does not need a blower, the air blowing and warming effects are good, the energy consumption is low, in addition, the air guide effect on an air outlet can be realized through the arrangement of the folding edge, and the scalding on users caused by overhigh temperature of the top edge of the heat radiation sandwich layer can be effectively avoided.

Description

A kind of heat radiation interlayer that is used for electric heater

Technical field

The utility model relates to the technical field of heating with electric heater, relates in particular to a kind of heat radiation interlayer that is used for electric heater.

Background technology

Household warming in the market, mainly comprise electric heating installation using oil as medium and PTC the pottery warm-air drier, wherein, the advantage of electric heating installation using oil as medium is the flames of anger, removable, shortcoming be preheating time long, power consumption is big, heating effect is not obvious.The advantage of PTC warm-air drier is not need preheating, forced convertion, and shortcoming is that air quantity is little, power consumption is big, is only applicable to 15 square metres of little spaces once.The PTC warm-air drier is one or more PTC heat-generating pipes are installed in device and are constituted the heating part, the heat that distributes by heater element reaches heating effect, be generally the heat energy Fast Heating ambient air that heater element is distributed, air blast also is housed in many warm-air driers the heat that heater element produces is produced by boasting from hot-air mouth, with the circumference air.This shows, need to adopt the air blast blowing, can make heater element not reach desirable heating temp, energy consumption is also higher, and air blast can only blow out hot blast from a face, and heating effect is not good enough.

On the other hand, the peripheral temperature at warmers such as electric heating installation using oil as medium and PTC pottery warm-air driers all has relevant criterion, (generally adopting two kinds of testing standards of warmer aspect 60335-1 and 60335-2-30 at present), generally can not be higher than 155 degrees centigrade, overheated just easy the scald, dangerous.

Summary of the invention

First technical problem to be solved in the utility model is to provide a kind of heat radiation interlayer that is used for electric heater at above-mentioned prior art present situation, it can realize the automatic convection current of cold and hot air, simple in structure, production cost is lower, and make electric heater air-supply heating effect good, need not blower fan and cut down the consumption of energy.

Second technical problem to be solved in the utility model is the heat radiation interlayer that is used for electric heater that peripheral temperature meets the dependence test standard.

The utility model solves the technical scheme that above-mentioned first technical problem adopted: this is used for the heat radiation interlayer of electric heater, it is characterized in that: comprise two blade unit fin, this two blade units fin left and right symmetrically is fitted into the cavity that the mediad outside is heaved, fitted all around, and the top of every blade unit fin, bottom have first passage, second passage.

When this heat radiation interlayer is applied to electric heater, at heat radiation interlayer (also being in the cavity) heat-generating pipe can be set in every way, during work, the heat-generating pipe heating, the air themperature that is positioned within the cavity is raise, the rule of utilizing thermal current upwards to flow naturally, hot-air in the cavity can be exported from first passage at cavity top by nature, and cold air can enter from second passage of cavity bottom is additional continuously, and so, first passage is the gas outlet, second passage is as air inlet, cold and hot air forms the automatic convection current that goes round and begins again in the formed cavity of heat radiation interlayer, and the space outerpace of electric heater is heated up, thereby reaches the heating purpose.

Because the heat radiation interlayer is the cavity that heave in an applying all around and the mediad outside, for making things convenient for first, second passage respectively in the setting of interlayer top, bottom of dispelling the heat, the first excessive inclined-plane that has inclination between the portion is heaved by the top of every blade unit fin and central authorities, the second excessive inclined-plane that has inclination between the portion is heaved by the bottom of every blade unit fin and central authorities, described first passage is arranged on this first excessive inclined-plane, and second passage just is arranged on this second excessive inclined-plane.

Preferably, first passage on every blade unit fin top has a plurality of and is strip hole, and like this, the air outlet at top can guarantee air output greatly;

Preferably, second passage on every blade unit fin bottom has a plurality of and rounded, and like this, the air inlet of bottom can prevent to a certain extent that foreign matter from entering the heat radiation interlayer.

In fact, can set up the air outlet of different shape on every blade unit fin in position, to increase the heating installation output channel.

For further solving second above-mentioned technical problem, make electric heater up to standard, each first passage is elongated and be horizontally installed on heat radiation interlayer top, and can there be flanging the upper edge of first passage to the punching press of inside cavity direction, so, the flanging of each first passage with regard to physical relief be paired in thermal air current to guide edge, also be, the hot-air that upwards flows is blown out to the both sides of heat radiation interlayer, avoid hot-air directly to blow to the top of heat radiation interlayer, be difficult for up to standard thereby the temperature at the edge, top of the interlayer of avoiding dispelling the heat is too high.

At first passage is that the prerequisite in strip hole is little, for further avoiding hot-air directly to blow to the top of heat radiation interlayer, the flanging end of two first passages can touch mutually or be near touching state about top, and surround the space of a relative closure with two first excessive inclined-planes about flanging top, this space promptly becomes the unapproachable blind area of hot-air, stopped most heat and conducted to the heat radiation interlayer top of blind area top, thereby the interlayer top sides of effectively avoiding dispelling the heat is too high and scald the user along temperature.

For making described flanging have best guide effect, make electric heater easily by testing standard, described flanging end can be downward-sloping, and the angle of flanging and horizontal plane is to be good in 20 °～60 ° scopes, and wherein this angle is preferably 40 °～45 °.

Compared with prior art, advantage of the present utility model is: by about the applying of two blade unit fin, the cavity that formation can be had full communication between the higher and lower levels, when reality is used, utilize thermal current to have the characteristic that nature upwards flows, realize the automatic convection current of air, make electric heater need not blower fan, the air-supply heating effect is good, energy consumption is low, and, make whole electric heater have simple in structure, energy-conservation, safe in utilization, cost of manufacture is lower, the thermal efficiency is than advantages such as height.In addition, the utility model is by the setting at the first passage edge flanging, the gas outlet had the wind-guiding effect, and when hot-air when a plurality of first passages blow out, have hot-air at the top of the formed internal cavity of heat radiation interlayer and enter the blind area, this blind area promptly be positioned at top about the flanging of two first passages, together with about two first spaces that excessive inclined-plane is wrapped up, this top, blind area is heat radiation interlayer top sides edge, thereby, hot-air does not reach this blind area, stopped most heat and conducted to the heat radiation interlayer top of blind area top, thereby the interlayer top sides of effectively avoiding dispelling the heat is too high and scald the user along temperature.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the three-dimensional exploded view of the utility model embodiment;

Fig. 3 is the partial structurtes schematic diagram at top in the unit fin among the utility model embodiment;

Fig. 4 is the structural representation that an application has the convection type electric heater of the utility model embodiment;

Fig. 5 is the three-dimensional exploded view of Fig. 4.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1～shown in Figure 3, the heat radiation interlayer that this is used for electric heater comprises two blade unit fin 3a, and this two blade units fin 3a is symmetrical set, and four peripheries are fitted mutually and formed the cavity that heave in the mediad outside;

And, the first excessive inclined-plane 36 that has inclination between the portion is heaved by the top of every blade unit fin 3a and central authorities, the top of every blade unit fin 3a is positioned at and laterally has two first elongated passages 31 on the first excessive inclined-plane 36, there is flanging 31a the upper edge of each first passage 31 to the punching press of inside cavity direction, described flanging 31a end is downward-sloping, the angle α of flanging 31a and horizontal plane is 45 °, and be positioned at top about the flanging 31a end of two first passages 31 touch mutually, and constitute the space A of a relative closure with the inboard on two first excessive inclined-planes 36 about flanging 31a top, avoid hot-air directly to blow to dispelling the heat the top of interlayer 3;

The second excessive inclined-plane 37 that has inclination between the portion is heaved by the bottom of every blade unit fin 3a and central authorities, and the bottom of every blade unit fin 3a is positioned at and is evenly equipped with a plurality of second rounded passages 32 on the second excessive inclined-plane 37;

All first passages 31 are as the gas outlet, and all second passages 32 can circulate and mistake air from inside cavity as air inlet, form cross-ventilation.

As Fig. 4, shown in Figure 5, be one to use the convection type electric heater that this heat radiation interlayer is arranged, it comprises a whole elongated control face shield 1, two heating aluminum pipes 2, vertically setting and parallel each other six described heat radiation interlayers 3 and a thermal insulation board 4;

Wherein, have two horizontal through holes 33 up and down on each heat radiation interlayer 3, the side (also being every blade unit fin 3a) of each heat radiation interlayer 3 is provided with two group leader's bar shaped air outlets 34, every group leader's bar shaped air outlet 34 has a plurality of strip air outlets 34 arranged side by side, the length direction of this strip air outlet 34 is consistent with the length direction of unit fin 3a, and, two group leader's bar shaped air outlets 34 and two horizontal through hole 33 transpostion interval settings, heat radiation interlayer 3 also offers a horizontal circular hole 35 above being positioned at this two group leaders bar shaped air outlet 34 and two horizontal through holes 33, referring to Fig. 4 and Fig. 5;

Each heat radiation interlayer 3 has a circle chimb 33a of projection laterally at the edge of horizontal through hole 33, laterally the edge of circular hole 35 also is provided with a circle bulge loop 35a who protrudes laterally, the height of chimb 33a is consistent on the height of this bulge loop 35a and the horizontal through hole 33, so, link to each other by the applying between corresponding chimb 33a and the corresponding bulge loop 35a between the side of adjacent two heat radiation interlayers 3;

Described thermal insulation board 4 sizes adapt with the size of monolithic cell fin 3a, it is arranged between the inboard and a plurality of heat radiation interlayer 3 of control face shield 1, this thermal insulation board 4 covers on the monolithic cell fin 3a, just in time with around this monolithic cell fin 3a pasting mutually and form the another cross-ventilated cavity that forms around the thermal insulation board 4, this monolithic cell fin 3a also the chimb 33a by correspondence and corresponding bulge loop 35a applying and be connected to each other with adjacent heat radiation interlayer 3;

Described two heating aluminum pipes 2 are between the upper and lower every setting, each heating aluminum pipe 2 centre is a pipe 21, the pipe periphery has radial wall extension 22 and makes heating aluminum pipe 2 cross sections be the X type, each heating aluminum pipe 2 is in the mode perpendicular to each heat radiation interlayer 3 side, run transverse through horizontal through hole 33 corresponding on each heat radiation interlayer 3 and be applied in a plurality of heat radiation interlayers 3, horizontal through hole 33 sizes in the heat radiation interlayer 3 are greater than the outside dimensions of heating aluminum pipe 2, there is the gap and make between heating aluminum pipe 2 and the heat radiation interlayer 3, both are directly contact not, and, each heating aluminum pipe 2 head exposes to outside thermal insulation board 4 sides and connects in order to circuit, the head of each heating aluminum pipe 2 is provided with a gripper shoe 23, and the interlayer 3 that dispels the heat relatively is fixing by gripper shoe 23 fixing on described thermal insulation board 4 sides for each heating aluminum pipe 2;

In the present embodiment, the cavity of six heat radiation interlayers, 3 formation adds the cavity of thermal insulation board 4 and monolithic cell fin 3a composition, this electric heater possesses seven altogether and participates in cross-ventilated cavity, wherein, for the afterbody that makes heating aluminum pipe 2 does not expose to device, and device is more safe and reliable, and outermost that blade unit fin 3a goes up and removes first passage 31 that has the top in six heat radiation interlayers 3, and all the other holes are not offered;

It is peripheral and the head of two heating aluminum pipes 2 is covered that described control face shield 1 is enclosed in thermal insulation board 4,1 is provided with regularly rotary switch 11 and coupled timer, heating aluminum pipe gauge tap 12 on the control face shield, this control face shield 1 inboard is provided with the control circuit board (all not shown among the figure) that links to each other with power supply, this control circuit board is electrically connected with the head of timer, gauge tap 12, described control circuit board and each heating aluminum pipe 2 respectively, thus the work of control heating aluminum pipe 2;

Have additional a bobbin winder base 13 on the lateral surface of described control face shield 1;

For increasing horizontal heating portion, the inboard of described control face shield 1 also has additional a PTC electro-heat equipment 5 and a blower fan 6, and, have a horizontal air outlet 14 on the described control face shield 1 accordingly, during work, the heat that blower fan 6 produces PTC electro-heat equipment 5 is outside horizontal air outlet 14 carrying devices.

During this convection type electric heater work, heating aluminum pipe 2 gets electric and generates heat, heating is positioned at the air of cavity, and the hot-air in the cavity can be exported from first passage 31 at top by nature, cold air again can be continuously replenishes from second passage 32 of cavity bottom and enters, cold and hot air forms constantly reciprocal free convection in heat radiation interlayer 3 formed cavitys, and makes the atmosphere temperature rising in the space, thereby reaches the heating purpose.

Claims

1. heat radiation interlayer that is used for electric heater, it is characterized in that: comprise two blade unit fin (3a), this two blade units fin (3a) left and right symmetrically is fitted into the cavity that the mediad outside is heaved, fitted all around, and top, the bottom of every blade unit fin (3a) has first passage (31), second passage (32).

2. the heat radiation interlayer that is used for electric heater according to claim 1, it is characterized in that: the first excessive inclined-plane (36) that has inclination between the portion is heaved by the top of every blade unit fin (3a) and central authorities, the second excessive inclined-plane (37) that has inclination between the portion is heaved by the bottom of every blade unit fin (3a) and central authorities, described first passage (31) is arranged on this first excessive inclined-plane (36), and second passage (32) just is arranged on this second excessive inclined-plane (37).

3. the heat radiation interlayer that is used for electric heater according to claim 2 is characterized in that: first passage (31) on every blade unit fin (3a) top has a plurality of and elongated.

4. the heat radiation interlayer that is used for electric heater according to claim 2 is characterized in that: second passage (32) on every blade unit fin (3a) bottom has a plurality of and rounded.

5. according to the described heat radiation interlayer that is used for electric heater of arbitrary claim in the claim 1 to 4, it is characterized in that: the elongated and horizontally set of each first passage (31), and there is flanging (31a) upper edge of each first passage (31) to the punching press of inside cavity direction.

6. the heat radiation interlayer that is used for electric heater according to claim 3, it is characterized in that: the elongated and horizontally set of each first passage (31), there is flanging (31a) upper edge of each first passage (31) to the punching press of inside cavity direction, and, flanging (31a) end of two first passages (31) touches mutually about top, and with flanging (31a) top about two first excessive inclined-planes (36) surround the space (A) of a relative closure.

7. the heat radiation interlayer that is used for electric heater according to claim 5 is characterized in that: described flanging (31a) is terminal downward-sloping, and the angle (α) of flanging (31a) and horizontal plane is in 20 °～60 ° scopes.