Instantaneously heated type heater Thermal Cutoffs protection structure
Technical field
The utility model is related to a kind of Instant heating type water heater, particularly a kind of instantaneously heated type heater Thermal Cutoffs protection
Structure.
Background technology
Instant heating type water heater temperature rises very soon, and temperature-sensing element temperature-sensitive slightly postpones, and heater easily causes dry combustion method,
In turn result in heater and the potential safety hazard such as burn.
Shown in Figure 7, current Instant heating type water heater 10 is protected using Kick type temperature controller 8 mostly, and heat is by adding
Hot device outer wall passes to temperature controller shell, and the bimetal leaf temperature-sensitive in shell controls the closure/disconnection of contact.
Temperature controller break-make is controlled using bimetal leaf temperature-sensitive, it is necessary to temperature-sensitive area it is larger, and i.e. hot thick film heating layer and
Non- heating layer temperature difference is larger, and bump contact causes the big temperature-sensitive of temperature gap to be forbidden.If heater is the face of cylinder, it is difficult to
Accomplish bump contact.
If temperature controller is placed directly on heating layer, heating layer is inner conducting layer external insulation film, easy with temperature controller directly contact
Cause short-circuit risks;If being placed on non-heating layer, the heat transfer time is more long, and temperature controller action postpones, it is impossible to play guarantor in time
Shield is acted on.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that above-mentioned prior art is present, and provides a kind of simple structure and close
Reason, can quick response protection, highly effective and safe, reliable instantaneously heated type heater Thermal Cutoffs protection structure during heater dry combustion method.
What the purpose of this utility model was realized in:
A kind of instantaneously heated type heater Thermal Cutoffs protection structure, including heater body and heating power supply circuit, heating
Device body includes water boiling vessels and i.e. hot thick film heating layer, and water boiling vessels are provided with cylindrical surface, i.e., hot thick film heating layer is close to
On the cylindrical surface of water boiling vessels, it is characterized in that, also including positioner and fuse component, fuse component is by fixed
Position device is close to hot thick film heating layer surface in sight;Fuse component includes Thermal Cutoffs and fire-retardant temperature insulation layer, fire-retardant
Temperature insulation layer separates Thermal Cutoffs with heater body, and fire-retardant temperature insulation layer outer wall is tight with heater body surface
Patch, fire-retardant temperature insulation layer inwall is close to Thermal Cutoffs surface, i.e., hot thick film heating layer is by Thermal Cutoffs and heating
During power supply circuit is electrically connected with.Instantaneously heated type heater Thermal Cutoffs protection structure can quickly be entered to solve heater body dry combustion method
Enter guard mode, using Thermal Cutoffs mode, i.e., the hot thick film heating layer of the direct temperature sensing heater body of Thermal Cutoffs, with
Reach quick response protection.
The purpose of this utility model can also be solved using following technical measures:
Used as more specifically scheme, the fire-retardant temperature insulation layer is by the outer fire-retardant temperature insulation layer being mutually close to and internal resistance
Combustion temperature insulation layer is composited, and outer fire-retardant temperature insulation layer and interior fire-retardant temperature insulation layer thickness are respectively less than 0.5mm, and temperature is protected
Dangerous silk is adjacent to interior fire-retardant temperature insulation layer inwall, and heater body surface is adjacent to outer fire-retardant temperature insulation layer outer wall.True
During environment friendly flame-retardant effect, fire-retardant temperature insulation layer is more thin more is conducive to heat quickly to transmit, and anti-dry effect is more notable.
The fire-retardant temperature insulation layer is fire-retardant heatproof insulating sleeve, and it is tightly placed in outside Thermal Cutoffs, Thermal Cutoffs
Two ends are provided with link electrode, and link electrode is stretched out outside fire-retardant heatproof insulating sleeve.
The fire-retardant heatproof insulating sleeve two ends extend to outside Thermal Cutoffs end and are bent to same direction, fire-retardant
Heatproof insulating sleeve is provided with encapsulating material in two ends.
The water boiling vessels are cylindrical, and it includes inner cylinder and outer barrel, is nested and two ends sealing company inside and outside inner cylinder and outer barrel
Connect, passage to boil water is formed between inner cylinder and outer barrel, i.e., hot thick film heating layer inner surface is close to outer barrel, and the fuse component is tight
It is attached on i.e. hot thick film heating layer outer surface.
The Thermal Cutoffs of the fuse component is set along the axis direction of heater body.Due to heater body
Temperature changes with axis direction, is set along the axis direction of heater body by by Thermal Cutoffs, can detect different temperature
Degree point, any one temperature spot temperature designs fusing-off temperature higher than Thermal Cutoffs, you can so that heating power supply circuit disconnects, to producing
Product play a protective role.
The positioner is shell, and shell is arranged on heater body periphery, and outer casing inner wall correspondence fuse component sets
There is fixed bit, fuse component is pressed between outer casing inner wall and heater body outer surface.
The side of correspondence fuse component dorsad heater body is provided with locating slot on the fixed bit.
The fixed bit is made up of multiple gussets, and gusset is circumferentially disposed, and each gusset is arranged along heater body axis direction
Cloth, is correspondingly provided with the locating slot on each gusset.
The fixed bit two ends side correspondence fuse component two ends are provided with baffle plate, prevent fuse component axis direction from moving
It is dynamic.
The beneficial effects of the utility model are as follows:
(1)The Thermal Cutoffs of such instantaneously heated type heater Thermal Cutoffs protection structure passes through flame retarding construction part(It is fire-retardant
Temperature insulation layer)It is brought into close contact with heater body wall, and ensure temperature-sensitive position and the heater body of Thermal Cutoffs
The optimal temperature-sensitive point of wall is fully contacted without relative movement, once heater body is in dry-fire condition, fuse can quick temperature-sensitive
And disconnect, effectively prevent heater from burning, the potential safety hazard such as on fire;Also, due to being hot thick film heating in instantaneously heated type heater
Layer its temperature change in dry combustion method is the rapidest, so fuse component is close to i.e. hot thick film heating layer, its anti-dry
Effect is more preferable.
Brief description of the drawings
Fig. 1 is the embodiment decomposition texture schematic diagram of the utility model one.
Fig. 2 is that the utility model assembles latter cross-sectional view.
Fig. 3 is mplifying structure schematic diagram at A in Fig. 2.
Fig. 4 is shell and fuse component attachment structure schematic diagram after the utility model.
Fig. 5 is the utility model back cover structure schematic diagram.
Fig. 6 is the utility model dry combustion method temperature profile.
Fig. 7 is prior art construction schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model:
Referring to shown in Fig. 1 to Fig. 5, a kind of instantaneously heated type heater Thermal Cutoffs protection structure, including heater body 10
With heating power supply circuit, the hot thick film heating layer 3 including water boiling vessels 2 and i.e. of heater body 10, water boiling vessels 2 are provided with cylinder
Surface, i.e., hot thick film heating layer 3 is close on the cylindrical surface of water boiling vessels 2, it is characterized in that, also including positioner and guarantor
Dangerous silk component 20, fuse component 20 is close to hot 3 surface of thick film heating layer in sight by positioner;Fuse component 20 includes
Thermal Cutoffs 5 and fire-retardant temperature insulation layer, fire-retardant temperature insulation layer separate Thermal Cutoffs 5 with heater body 10, resistance
Combustion temperature insulation layer outer wall is close to the surface of heater body 10, and fire-retardant temperature insulation layer inwall is tight with the surface of Thermal Cutoffs 5
Patch, i.e., during hot thick film heating layer 3 is electrically connected with by Thermal Cutoffs 5 with heating power supply circuit.
The fire-retardant temperature insulation layer is answered by the outer fire-retardant temperature insulation layer 6 being mutually close to and interior fire-retardant temperature insulation layer 7
Conjunction is formed, and outer fire-retardant temperature insulation layer 6 and the interior thickness of fire-retardant temperature insulation layer 7 are respectively less than 0.5mm, Thermal Cutoffs 5 and internal resistance
Combustion temperature insulation layer inwall 71 is adjacent to, and the surface of heater body 10 is adjacent to outer fire-retardant temperature insulation layer outer wall 61.
The fire-retardant temperature insulation layer is fire-retardant heatproof insulating sleeve, and it is tightly placed in outside Thermal Cutoffs 5, Thermal Cutoffs
5 two ends are provided with link electrode, and link electrode is stretched out outside fire-retardant heatproof insulating sleeve.
The fire-retardant heatproof insulating sleeve two ends extend to outside the end of Thermal Cutoffs 5 and are bent to same direction, fire-retardant
Heatproof insulating sleeve is provided with encapsulating material in two ends(Encapsulating material is not essential).
With reference to shown in Fig. 6, the temperature of outer fire-retardant temperature insulation layer outer wall 61 is slightly above interior fire-retardant temperature insulation layer inwall 71
Temperature, according to other non-conductive layer, even if heater body 10 be in dry-fire condition, the temperature of non-conductive layer surface is still
It is so very low, so, do not take non-conductive layer to separate Thermal Cutoffs 5 with heater body 10.
The water boiling vessels 2 are cylindrical, and it includes inner cylinder 22 and outer barrel 21, inner cylinder 22 is inside and outside with outer barrel 21 be nested and
Two ends are tightly connected, and passage to boil water 23 is formed between inner cylinder 22 and outer barrel 21, i.e. 3 inner surface of hot thick film heating layer are tight with outer barrel 21
Patch, the fuse component 20 is close on hot thick film heating layer outer surface 31 in sight.
The Thermal Cutoffs 5 of the fuse component 20 is set along the axis direction of heater body 10.
The positioner is shell 1, and shell 1 is arranged on the periphery of heater body 10, the inwall of shell 1 correspondence fuse group
Part 20 is provided with fixed bit, and fuse component 20 is pressed between the inwall of shell 1 and the outer surface of heater body 10.
The side of the correspondence dorsad heater body 10 of fuse component 20 is provided with locating slot 131 on the fixed bit.
The fixed bit is made up of multiple gussets 13, and gusset 13 is circumferentially disposed, and each gusset 13 is along the axle of heater body 10
Line direction is arranged, and the locating slot 131 is correspondingly provided with each gusset 13.
The fixed bit two ends side correspondence upper and lower ends of fuse component 20 are respectively equipped with overhead gage 14 and lower baffle plate 15.
The shell 1 includes fore shell 11 and rear shell 12, and in the present embodiment, fixed bit is arranged on the inwall of rear shell 12.
Thermal Cutoffs operating temperature range is 100-200 DEG C in the market, according to i.e. 3 surface temperature of hot thick film heating layer
Degree is adjusted.Such as it is that 3 surface point normal working temperature of hot thick film heating layer are T1 DEG C, outer fire-retardant temperature insulation layer outer wall 61
It is T2 DEG C, then the operating temperature prioritizing selection T=T1-T2 of the Thermal Cutoffs 5 with the interior fire-retardant temperature difference of temperature insulation layer inwall 71
+(30 DEG C to 40 DEG C).