CN108784336A - Insulating pot - Google Patents
Insulating pot Download PDFInfo
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- CN108784336A CN108784336A CN201710294739.1A CN201710294739A CN108784336A CN 108784336 A CN108784336 A CN 108784336A CN 201710294739 A CN201710294739 A CN 201710294739A CN 108784336 A CN108784336 A CN 108784336A
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- thermal conductivity
- low thermal
- pot wall
- conductivity material
- heating element
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21166—Constructional details or accessories
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
The invention discloses a kind of insulating pots, including bottom of the pot wall (1) and heating element (4), the top surface of bottom of the pot wall is formed with the protrusion (11) to raise up, the bottom surface of bottom of the pot wall is correspondingly formed with from the groove in the recessed protrusion in the bottom surface, low thermal conductivity material in the groove filled with thermal coefficient no more than 40W/mk is to form low thermal conductivity material layer (9), and heating element annularly coils the underface for being installed on low thermal conductivity material layer.In the insulating pot of the present invention, by filling low thermal conductivity material in the groove in bottom of the pot wall, and the low thermal conductivity material is located at the surface of heating element, the heat conduction along bottom of the pot wall thickness direction can be slowed down, advantageously reduce the wall superheat degree of bottom of the pot wall, so that the transverse direction of bottom of the pot wall is heated evenly, can effectively avoid the phenomenon that local steam bubble is small and intensive on bottom of the pot wall, reach significant noise reduction.
Description
Technical field
The invention belongs to household appliance technical fields, and in particular, to a kind of insulating pot.
Background technology
The bottom of the pot wall of conventional insulating pot mostly uses horizontal bottom of the pot wall, and electric hot tray is installed on the bottom surface of horizontal bottom of the pot wall, directly
Horizontal bottom of the pot wall is heated, and then heats the liquid water in insulating pot.Wherein, the heat source of electric hot tray comes from electrothermal tube, leads to
Electrothermal tube is crossed horizontal bottom of the pot wall is carried out to concentrate liquid in heating and then heating kettle.
When insulating pot works, electrothermal tube conducts heat to bottom of the pot wall in a manner of thermal contact conductance, and contact area is smaller, makes
The degree of superheat of the thermal contact area of bottom of the pot wall and electrothermal tube is larger, to keep the steam bubble generated in the thermal contact area small and be detached from
Frequency is high, is detached from the small bubble of bottom of the pot wall and can make small vapour by the heat transfer of itself to the liquid on periphery during rising
Bubble is easier to rupture because of loss of heat, generates loud noise.
Invention content
For above-mentioned insufficient or defect in the prior art, the present invention provides a kind of insulating pot, can effectively reduce steam bubble
The frequency for being detached from bottom of the pot wall achievees the effect that noise reduction to reduce the frequency that steam bubble ruptures in water.
To achieve the above object, the present invention provides a kind of insulating pot, including bottom of the pot wall and heating element, the bottom of the pot walls
Top surface be formed with the protrusion to raise up, the bottom surface of the bottom of the pot wall is correspondingly formed with recessed described convex from the bottom surface
Go out the groove in portion, low thermal conductivity material of the thermal coefficient no more than 40W/mk is filled in the groove to form low lead
Hot index material, the heating element annularly coil the underface for being installed on the low thermal conductivity material layer.
Preferably, the thermal coefficient of the low thermal conductivity material layer is not more than 20W/mk, the low thermal conductivity material
The thickness of the bed of material is not less than 0.5mm and is not more than 2mm.
Preferably, the low thermal conductivity material layer is mica layer or ceramic layer.
Preferably, the bottom surface of the bottom of the pot wall is flushed with the bottom surface of the low thermal conductivity material layer.
Preferably, the protrusion is punch forming, and the bottom surface of the bottom of the pot wall is formed with corresponding stamped groove.
Preferably, the top surface of the bottom of the pot wall is equipped with the circle ring area for arranging the protrusion；
Wherein, the multiple protrusions being along the circumferential direction spaced, the protrusion are equipped in the circle ring area
For the linear protrusion of radial direction radially extended, the annular heating element and the circle ring area arranged concentric；
Alternatively, being equipped with multiple linear protrusions along the extension of string direction and parallel interval, ring in the circle ring area
The heating element of shape and the circle ring area arranged concentric；
Alternatively, the protrusion is annular protrusion, the annular heating element and the annular protrusion arranged concentric.
Preferably, the inner peripheral of the low thermal conductivity material layer is not more than the inner peripheral of the heating element, and described
The outer peripheral edge of low thermal conductivity material layer is not less than the outer peripheral edge of the heating element.
Preferably, the low thermal conductivity material layer and the heating element arranged concentric, the low thermal conductivity material
The ring width of layer not less than 1 and is not more than 2 not less than the ring width and the ratio between ring width value of the heating element.
Preferably, the inner peripheral of the low thermal conductivity material layer is more than the inner peripheral of the heating element, and described low
The outer peripheral edge of thermal coefficient material layer is less than the outer peripheral edge of the heating element.
Preferably, the low thermal conductivity material layer and the heating element arranged concentric, the low thermal conductivity material
The ring width of layer is less than the ring width of the heating element and the ratio between ring width value is not less than 0.5 and less than 1.
Preferably, the protrusion is annular protrusion, and the annular protrusion is formed to have the first circular lance
First fan annular, contact heating region of the heating element in the bottom surface of the bottom of the pot wall are formed to have the second circular lance
The second fan annular, the arc chord angle of first circular lance is less than the arc chord angle of second circular lance.
Preferably, the insulating pot further includes the substrate between the bottom of the pot wall and the heating element, the base
Plate is the high thermal conductivity coefficient metallic plate that thermal coefficient is not less than 100W/mk.
Through the above technical solutions, in the insulating pot of the present invention, raised up by being formed in the top surface of bottom of the pot wall
Protrusion, the bottom surface of bottom of the pot wall is correspondingly formed with from the groove in the recessed protrusion in the bottom surface, is filled in the groove
Low thermal conductivity material of the thermal coefficient no more than 40W/mk is to form low thermal conductivity material layer, and heating element is annular in shape
Coiling is installed on the underface of low thermal conductivity material layer, increases the thickness of thermal contact area, slows down along bottom of the pot wall thickness
The heat conduction in direction advantageously reduces the wall superheat degree of bottom of the pot wall, so that the transverse direction of bottom of the pot wall is heated evenly, can effectively avoid bottom of the pot
The small and intensive phenomenon of local steam bubble, reaches significant noise reduction on wall.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the front view of the insulating pot of the present invention；
Fig. 2 is the entirety sectional view of the insulating pot of the first preferred embodiment of the present invention；
Fig. 3 is the part A enlarged drawing in Fig. 2；
Fig. 4 is the entirety sectional view of the insulating pot of the second preferred embodiment of the present invention；
Fig. 5 is the part B enlarged drawing in Fig. 4；
Fig. 6 is formed with vertical view when protrusion for the top surface of the bottom of the pot wall of the present invention, wherein protrusion is in annular shape；
Fig. 7 is formed with vertical view when protrusion for the top surface of the bottom of the pot wall of the present invention, wherein protrusion is cyclic annular in fan；
Fig. 8 is formed with vertical view when protrusion for the top surface of the bottom of the pot wall of the present invention, wherein protrusion is radial linear
Protrusion；
Fig. 9 is formed with vertical view when protrusion for the top surface of the bottom of the pot wall of the present invention, wherein protrusion is linear protrusion；
Figure 10 is the entirety sectional view of insulating pot in the prior art；
Figure 11 is installed on the upward view when bottom surface of bottom of the pot wall for electrothermal tube in the prior art；
Figure 12 is the steam bubble schematic diagram of the top surface of bottom of the pot wall when electrothermal tube is installed on bottom of the pot wall in the prior art；
Figure 13 is the vapour of the top surface of bottom of the pot wall when being filled with low thermal conductivity material in the present invention in the groove of bottom of the pot wall
Steep schematic diagram.
Reference sign：
1 bottom of the pot wall, 5 shell
11 protrusion, 6 handle
2 bottle body, 7 steam pipe
3 pot lid, 8 substrate
4 heating element, 9 low thermal conductivity material layer
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is typically needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Figures 1 and 2, the present invention provides a kind of insulating pots, including constitute bottom of the pot wall 1, bottle body 2 and the pot lid of kettle body
3, the bottom of bottom of the pot wall 1 is equipped with the heating element 4 for being heated to liquid in pot, and the outer gusset of kettle body is equipped with shell 5, the shell
It is connected with handle 6 on 5, is equipped with steam pipe 7 in kettle body, in handle 6 or between kettle body and shell 5, the bottom of kettle body is equipped with temperature
Device is controlled, the steam in kettle body is guided to temperature controller, passed through when temperature controller detects that vapor (steam) temperature reaches preset value by steam pipe 7
Bi-metal plate deformed is to disconnect the power supply of heating element 4, or temperature sensor is equipped in kettle body, when temperature sensor detects
When temperature in pot reaches preset value, the power supply of heating element 4 is disconnected by micro-chip processor.
In the insulating pot of the prior art, referring to Fig.1 1, setting is for liquid in heating kettle on the bottom surface of bottom of the pot wall 1
Electrothermal tube, in the entire heating process of insulating pot, electrothermal tube is conducted the heat of itself to bottom of the pot wall 1 in a manner of thermal contact conductance
Bottom surface, the thermal contact area is in a ring and area is smaller, make the heat flow density of the thermal contact area of bottom of the pot wall 1 and electrothermal tube compared with
Greatly, cause the degree of superheat of the thermal contact area also larger.Specifically, the degree of superheat of bottom of the pot wall 1 and the thermal contact area of electrothermal tube
Bigger, the gas generated after liquid gasification is supplemented into that evaporation power caused by steam bubble is bigger, then the gas gives steam bubble
Lifting force vertically upward it is also bigger, bottom of the pot wall 1 is just detached from into growing up without equal small bubble, in this way, when by being set to
When the electrothermal tube of the bottom surface of bottom of the pot wall 1 heats liquid in pot, the steam bubble that is generated on bottom of the pot wall 1 is more difficult to grow up and is detached from
The frequency of the bottom of the pot wall 1 is also higher, and to keep the steam bubble that disengaging bottom of the pot wall 1 enters in water small and intensive, referring to Figure 12, and this is small
Steam bubble is also easier to rupture in water because of loss of heat during rising, generates loud noise.
In view of this, to reduce the wall superheat degree of the thermal contact area on bottom of the pot wall 1, keep bottom of the pot wall 1 heated evenly,
To avoid the phenomenon that local steam bubble is small and intensive on bottom of the pot wall 1, achieve the effect that noise reduction, with reference to Fig. 2 and Fig. 3, in the present invention
Insulating pot in, including bottom of the pot wall 1 and heating element 4 are formed with the protrusion 11 to raise up, pot in the top surface of bottom of the pot wall 1
The bottom surface of bottom wall 1 is correspondingly formed with from the groove in the recessed protrusion in the bottom surface 11, and heat conduction system is filled in the groove
Low thermal conductivity material of the number no more than 40W/mk is to form low thermal conductivity material layer 9, and heating element 4 annularly pacify by coiling
Underface loaded on low thermal conductivity material layer 9.So set, the heat of heating element 4 can be made first little via thermal coefficient
It is conducted upwards to bottom of the pot wall 1, then again through bottom of the pot wall 1 to the liquid water in pot in the low thermal conductivity material layer 9 of 40W/mk
It is heated, has not only thickened the thickness of heat transfer in this way, is i.e. heat transfer distances increase, also using the low thermal conductivity material layer
9 low thermal conductivity further slows down the heat conduction along 1 thickness direction of bottom of the pot wall, and the transverse direction to be conducive to bottom of the pot wall 1 is heated equal
Weighing apparatus reduces the wall superheat degree of bottom of the pot wall 1.Specifically, the wall superheat degree of bottom of the pot wall 1 reduces, and liquid gasification can be made to generate
Gas enters the evaporation power generated after steam bubble and also decreases, and correspondingly the gas gives the lifting force vertically upward of steam bubble
Also reduce therewith, and then make steam bubble that can grow up on bottom of the pot wall 1 at being detached from the bottom of the pot wall 1 after larger steam bubble again, referring to Figure 13,
In this way, the frequency of bubble departure bottom of the pot wall 1 can be reduced effectively, the frequency that steam bubble ruptures in water is reduced, to reduce insulating pot
Level of noise when work reaches significant noise reduction.
Wherein, low thermal conductivity material layer 9 can be various materials appropriate, such as mica layer or ceramic layer, heat conduction
Coefficient should be not more than 40W/mk.Further, to keep the heat conduction along 1 thickness direction of bottom of the pot wall slower, low thermal conductivity material
The thermal coefficient of the bed of material 9 is preferably not greater than 20W/mk.In addition, the thickness of low thermal conductivity material layer 9 should be not less than 0.5mm
And it is not more than 2mm.It is to be appreciated that low thermal conductivity material layer 9 is thicker, the heat transfer along 1 thickness direction of bottom of the pot wall is slower,
Then the wall superheat degree of bottom of the pot wall 1 is also more conducive to noise reduction, but when the thickness of bottom of the pot wall 1 exceeds certain value, position with regard to smaller
The temperature of the top surface heating region of bottom of the pot wall 1 right over heating element 4 can be less than the temperature on periphery, may inversely increase
Temperature, and can also reduce heat transfer efficiency if thickness is bigger；The low thermal conductivity material layer 9 do not answer yet it is excessively thin, if thinner
Low thermal conductivity material layer 9 can then be weakened significantly to slow down longitudinal heat transfer and increase the effect laterally conducted heat.
In addition, the protrusion 11 formed in the top surface of bottom of the pot wall 1 is punch forming, phase is formed in the bottom surface of bottom of the pot wall 1
The stamped groove answered, the through the stamping process molding bottom of the pot wall 1 with protrusion 11 have that manufacturing process is simple, high rigidity, makes
With the service life it is high the features such as.
Specifically, cricoid heating element 4 can be various types appropriate, such as can be to be set to bottom of the pot wall 1
The electrothermal tube of lower section, or Electric radiant Heating Film (i.e. infrared electrothermal film) or the thick film being attached on the bottom surface of bottom of the pot wall 1, it can be with
For the coil panel or PTC heating plates for being arranged in the lower section of bottom of the pot wall 1.But electrothermal tube is usually conducted heat in a manner of thermal contact conductance, and with
The thermocontact area of bottom of the pot wall 1 is small, for other heating elements 4, characteristic and biography of the electrothermal tube due to self structure
The reason of hot mode is easier to occur during heating uneven to the heat transfer of bottom of the pot wall 1 so that push up the part of bottom of the pot wall 1
The degree of superheat in face is higher, so that generating small and intensive steam bubble in the local top surface of bottom of the pot wall 1, and then insulating pot is made to exist
Easy to produce larger noise when work, it, can after the insulating pot technical solution using the present invention of corresponding electricity consumption heat pipes heat
Lower noise is set preferably to be improved.
With reference to Fig. 2 and Fig. 3, electrothermal tube can be directly welded in bottom (the i.e. bottom of low thermal conductivity material layer 9 of bottom of the pot wall 1
Face is equipped with electrothermal tube), also can by substrate 8 by weld or fastener etc. in a manner of be fixedly connected on bottom of the pot wall 1 bottom surface it is (i.e. low to lead
Hot index material 9 is arranged right below electrothermal tube).In general, preferably soldering connects between electrothermal tube, substrate 8 and bottom of the pot wall 1
It connects.Wherein, substrate 8 is usually the high thermal conductivity coefficient metallic plate that thermal coefficient is not less than 100W/mk, such as copper coin, aluminium sheet, thickness
It is fast to spend direction heat conduction, facilitates the installation of electrothermal tube, but have substantially no effect on the heat transfer of electrothermal tube.Well known to a person skilled in the art
It is that usually there is dry combustion method piece on substrate 8, may also function as the purpose for preventing dry combustion method.
In addition, with continued reference to Fig. 2 and Fig. 3, the bottom surface of low thermal conductivity material layer 9 is preferably the bottom surface phase with bottom of the pot wall 1
It flushes, i.e., the depth of groove is identical as the thickness of low thermal conductivity material layer 9, and it is firm that such setting is not only convenient for heating element 4
It is entirely installed on the bottom (i.e. the bottom surface of low thermal conductivity material layer 9) of bottom of the pot wall 1, and when in bottom of the pot wall 1 and heating unit
When adding substrate 8 between part 4, the top surface of substrate 8 can be made to be fitted closely with the periphery of 1 bottom surface of bottom of the pot wall and central region, favorably
In the thermal contact conductance of bottom of the pot wall 1 in an axial direction.
Specifically, heating element 4 is annular in shape, to reduce the wall superheat degree of bottom of the pot wall 1, in annular heating element 4
It is arranged above the protrusion 11 for filling low thermal conductivity material, the setting of the protrusion 11 on the top surface of bottom of the pot wall 1
Form can there are many, such as can be that the top surface of bottom of the pot wall 1 is equipped with circle ring area for arranging protrusion 11, in the circle
Be equipped with the multiple protrusions 11 being along the circumferential direction spaced in ring region, protrusion 11 be radially extend it is radial linearly convex
Go out portion, annular heating element 4 and circle ring area arranged concentric, with reference to Fig. 8；Can be protrusion 11 in the top surface of bottom of the pot wall 1
On layout area be circle ring area, in the circle ring area be equipped with along string direction extend and parallel interval multiple linears
Protrusion, annular heating element 4 and circle ring area arranged concentric, with reference to Fig. 9；Can also be protrusion 11 be annular protrusion
(annular protrusion includes in circular protrusion 11 and is in fan cricoid protrusion 11), annular heating element 4 and annular
Protrusion arranged concentric, referring to figure 6 and figure 7；It is, of course, also possible to be other setting forms, this is no longer going to repeat them.Its
In, radial linear protrusion is cyclic annular in fan, does not do special limit to the central angle of the radial linear protrusion of fan annular herein
System, such as the central angle can be 10 °, 30 ° or 45 ° etc., specifically depending on actual process requirements.In addition, to linear
The width of protrusion does not do special restriction yet.
Specifically, with reference to Fig. 2 and Fig. 3, the inner peripheral of low thermal conductivity material layer 9 is not more than the inner peripheral of heating element 4,
And the outer peripheral edge of low thermal conductivity material layer 9 is not less than the outer peripheral edge of heating element 4, i.e., the ring width of heating element 4 is no more than low
The ring width of thermal coefficient material layer 9.So set, on the basis of slowing down along the heat transfer of 1 thickness direction of bottom of the pot wall, also increase
The big lateral heat affected zone of bottom of the pot wall 1, keeps the transverse direction of bottom of the pot wall 1 heated evenly, is conducive to noise reduction.
Wherein, low thermal conductivity material layer 9 and 4 arranged concentric of heating element, the ring width of low thermal conductivity material layer 9 be not small
It should be not less than 1 in the ring width and the ratio between ring width value of heating element 4 and be not more than 2.Specifically, low thermal conductivity material layer 9 with plus
The ratio between the ring width value of thermal element 4 is bigger, and correspondingly the ring width of low thermal conductivity material layer 9 is also bigger, is more conducive to slow down along pot
The lateral heat conduction of bottom wall 1, then noise reduction is more apparent, but heat transfer efficiency decreases.Certainly, the ratio between the ring width value is not yet
Can be excessive, such as the ratio between low thermal conductivity material layer 9 and the ring width value of heating element 4 should be not more than 2, specifically, in low heat conduction
After the ratio between index material 9 and the ring width value of heating element 4 exceed certain numerical value, then increase the low thermal conductivity material layer 9
Width, although being likewise advantageous to slow down along the lateral heat transfer of bottom of the pot wall 1, to the wall of the bottom of the pot wall 1 far from heating element 4
The influence of the face degree of superheat is but very small, and noise reduction is not evident.In addition, the ring width of low thermal conductivity material layer 9 is bigger, heat transfer efficiency is just
It is lower, and the material produced needed for the low thermal conductivity material layer 9 is more, increases production cost and therefore considers low lead
Influence of the ring width of hot index material 9 to noise reduction, heat transfer efficiency and production cost, low thermal conductivity material layer 9 with plus
The ratio between ring width value of thermal element 4 is preferably not greater than 2, is also not necessarily limited to this certainly.
Certainly, with reference to Fig. 4 and Fig. 5, when the inner peripheral of low thermal conductivity material layer 9 is more than the inner peripheral of heating element 4, and
When the outer peripheral edge of low thermal conductivity material layer 9 is less than the outer peripheral edge of heating element 4, it can also meet and slow down along 1 thickness side of bottom of the pot wall
To heat conduction purpose, i.e., insulating pot of the invention uses this technical solution, can also realize the wall superheat degree for reducing bottom of the pot wall 1
Purpose, be conducive to noise reduction.
Wherein, in a ring, the ring width of low thermal conductivity material layer 9 is less than for low thermal conductivity material layer 9 and heating element 4
The ring width of heating element 4, and low thermal conductivity material layer 9 and 4 arranged concentric of heating element.Specifically, low thermal conductivity material
The ratio between layer 9 and the ring width value of heating element 4 more advantageously reduce the wall superheat degree of bottom of the pot wall 1 closer to 1, i.e. noise reduction is imitated
Fruit is more apparent；Conversely, the ratio between low thermal conductivity material layer 9 and the ring width value of heating element 4 are smaller, the noise reduction the unevident,
Therefore, the ratio between low thermal conductivity material layer 9 and the ring width value of heating element 4 are preferably not less than 0.5 and are less than 1.
In addition, when heater element (such as electrothermal tube) is installed on the underface of low thermal conductivity material layer 9 in fan ring-type,
The protrusion 11 that the top surface of bottom of the pot wall 1 is formed can be annular protrusion (i.e. the protrusion 11 can be circular ring shape, or
Fan annular with circular lance), referring to Fig. 6 and Fig. 7.
Preferably, with reference to Fig. 7 and Figure 11, the protrusion 11 formed on the top surface of bottom of the pot wall 1 is annular protrusion, protrusion
Portion 11 is formed to have the first fan annular of the first circular lance, contact heating region of the heating element 4 in the bottom surface of bottom of the pot wall 1
It is formed to have the second fan annular of the second circular lance, wherein the arc chord angle of the first circular lance is less than the second circular lance
Arc chord angle.Specifically, the heating element 4 (such as electrothermal tube) of insulating pot is fan annular, the concentration heating region on bottom of the pot wall 1
It is correspondingly formed with the protrusion 11 of fan annular, the wall superheat degree of bottom of the pot wall 1 is advantageously reduced, if but on bottom of the pot wall 1
Far from the protrusion 11 for being formed with fillable low thermal conductivity material at heating region is concentrated, these regions can be slowed down along bottom of the pot wall
1 lateral heat transfer, i.e., these regional temperatures on bottom of the pot wall 1 rise slowly, are unfavorable for the lateral by thermal balance of bottom of the pot wall 1.
Certainly, protrusion 11 has the first circular lance, also there is corresponding circular arc to cut in the annular groove that the bottom surface of bottom of the pot wall 1 is formed
Mouthful, that is, it is not required to fill low thermal conductivity material at the circular lance of annular groove, the low heat conduction system is produced in this way, can reduce
The materials of number material, to reduce the production cost of insulating pot.
Hereinafter the present invention is specifically described with several preferred embodiments.
In the first preferred embodiment, with reference to Fig. 2, Fig. 3 and Fig. 7, the top surface of bottom of the pot wall 1, which is formed with, to raise up
Protrusion 11, the protrusion 11 are formed to have the first fan annular of the first circular lance, and the bottom surface of bottom of the pot wall 1 correspondingly forms
There is an annular groove from the recessed protrusion in the bottom surface 11, and filled with fanning cricoid mica layer, bottom of the pot wall 1 in the annular groove
Bottom surface and the bottom surface of mica layer be flush, the thickness of mica layer is 0.5mm；Electrothermal tube is formed to have the second circular lance
Second fan annular, coiling are installed on the underface of mica layer；Mica layer and electrothermal tube arranged concentric, ring width and the electricity of mica layer
The ring width of heat pipe is identical (i.e. the ratio between ring width value of mica layer and electrothermal tube is 1), and the arc chord angle of the first circular lance is less than the
The arc chord angle of two circular lances.It is, of course, also possible to add substrate 8 between bottom of the pot wall 1 and electrothermal tube, which is heat conduction system
Aluminium sheet of the number not less than 100W/mk.
In second of preferred embodiment, with reference to Fig. 4, Fig. 5 and Fig. 6, the top surface of bottom of the pot wall 1, which is formed with, to raise up
In circular protrusion 11, the bottom surface of bottom of the pot wall 1 is correspondingly formed with the annular groove from the recessed protrusion in the bottom surface 11, and
It is flush filled with circular ceramic layer, the bottom surface of bottom of the pot wall 1 and the bottom surface of ceramic layer in the annular groove, ceramic layer
Thickness is 0.5mm；Electrothermal tube coils the underface for being installed on ceramic layer, ceramic layer and electrothermal tube arranged concentric, the ring of ceramic layer
Wide ring width and the ratio between ring width value less than electrothermal tube is 0.5.It is, of course, also possible to which substrate is arranged between bottom of the pot wall 1 and electrothermal tube
8, which is the aluminium sheet that thermal coefficient is not less than 100W/mk.
In the third preferred embodiment, with reference to Fig. 2, Fig. 3 and Fig. 6, the top surface of bottom of the pot wall 1, which is formed with, to raise up
In circular protrusion 11, the bottom surface of bottom of the pot wall 1 is correspondingly formed with the annular groove from the recessed protrusion in the bottom surface 11, and
It is flush filled with circular ceramic layer, the bottom surface of bottom of the pot wall 1 and the bottom surface of ceramic layer in the annular groove, ceramic layer
Thickness is 2mm；Electrothermal tube coils the underface for being installed on ceramic layer, ceramic layer and electrothermal tube arranged concentric, the ring width of ceramic layer
Ring width and the ratio between ring width value not less than electrothermal tube are 2.It is, of course, also possible to substrate 8 is set between bottom of the pot wall 1 and electrothermal tube,
The substrate 8 is the copper coin that thermal coefficient is not less than 100W/mk.
In the 4th kind of preferred embodiment, with reference to Fig. 4, Fig. 5 and Fig. 7, the top surface of bottom of the pot wall 1, which is formed with, to raise up
Protrusion 11, the protrusion 11 are formed to have the first fan annular of the first circular lance, and the bottom surface of bottom of the pot wall 1 correspondingly forms
There is an annular groove from the recessed protrusion in the bottom surface 11, and filled with fanning cricoid mica layer, bottom of the pot wall 1 in the annular groove
Bottom surface and the bottom surface of mica layer be flush, the thickness of mica layer is 2mm；Electrothermal tube is formed to have the of the second circular lance
Two fan annulars, coiling are installed on the underface of mica layer；The ring width of mica layer and electrothermal tube arranged concentric, mica layer is less than electricity
The ring width and the ratio between ring width value of heat pipe are 0.5, in addition, the arc chord angle of the first circular lance is less than the circular arc of the second circular lance
Angle.It is, of course, also possible to which substrate 8 is arranged between bottom of the pot wall 1 and electrothermal tube, which is that thermal coefficient is not less than 100W/mk
Copper coin.
In the 5th kind of preferred embodiment, with reference to Fig. 2, Fig. 3 and Fig. 8, cloth of the protrusion 11 on the top surface of bottom of the pot wall 1
It is circle ring area to set region, and the multiple protrusions 11 being along the circumferential direction spaced, and protrusion are equipped in the circle ring area
11 be the linear protrusion of radial direction radially extended；The bottom surface of bottom of the pot wall 1 is correspondingly formed with linear from the recessed radial direction in the bottom surface
The groove of protrusion, and mica layer is filled in groove, the bottom surface of bottom of the pot wall 1 and the bottom surface of mica layer are flush, mica layer
Thickness be 1mm；Electrothermal tube coils the underface for being installed on mica layer, mica layer and electrothermal tube arranged concentric, the ring of mica layer
Wide ring width and the ratio between ring width value not less than electrothermal tube is 1.5.It is, of course, also possible to which base is arranged between bottom of the pot wall 1 and electrothermal tube
Plate 8, the substrate 8 are the copper coin that thermal coefficient is not less than 100W/mk.
In the 6th kind of preferred embodiment, with reference to Fig. 2, Fig. 3 and Fig. 9, cloth of the protrusion 11 on the top surface of bottom of the pot wall 1
It is circle ring area to set region, and multiple linears protrusion along the extension of string direction and parallel interval is equipped in the circle ring area
Portion；The bottom surface of bottom of the pot wall 1 is correspondingly formed with the groove from the recessed linear protrusion in the bottom surface, and filled with pottery in groove
Enamel coating, the bottom surface of bottom of the pot wall 1 and the bottom surface of ceramic layer are flush, and the thickness of ceramic layer is 1.5mm；Electrothermal tube coiling is installed on pottery
The underface of enamel coating, ceramic layer and electrothermal tube arranged concentric, the ring width of ceramic layer it is identical as the ring width of electrothermal tube (i.e. ceramic layer with
1) the ratio between ring width value of electrothermal tube is.It is, of course, also possible to which substrate 8 is arranged between bottom of the pot wall 1 and electrothermal tube, which is to lead
Hot coefficient is not less than the copper coin of 100W/mk.
In the 7th kind of preferred embodiment, with reference to Fig. 4, Fig. 5 and Fig. 8, cloth of the protrusion 11 on the top surface of bottom of the pot wall 1
It is circle ring area to set region, and the multiple protrusions 11 being along the circumferential direction spaced, and protrusion are equipped in the circle ring area
11 be the linear protrusion of radial direction radially extended；The bottom surface of bottom of the pot wall 1 is correspondingly formed with linear from the recessed radial direction in the bottom surface
The groove of protrusion, and ceramic layer is filled in groove, the bottom surface of bottom of the pot wall 1 and the bottom surface of ceramic layer are flush, ceramic layer
Thickness be 1mm；Electrothermal tube coils the underface for being installed on ceramic layer, ceramic layer and electrothermal tube arranged concentric, the ring of ceramic layer
Wide ring width and the ratio between ring width value less than electrothermal tube is 0.5.It is, of course, also possible to which substrate is arranged between bottom of the pot wall 1 and electrothermal tube
8, which is the copper coin that thermal coefficient is not less than 100W/mk.
In the 8th kind of preferred embodiment, with reference to Fig. 4, Fig. 5 and Fig. 9, cloth of the protrusion 11 on the top surface of bottom of the pot wall 1
It is circle ring area to set region, and multiple linears protrusion along the extension of string direction and parallel interval is equipped in the circle ring area
Portion；The bottom surface of bottom of the pot wall 1 is correspondingly formed with the groove from the recessed linear protrusion in the bottom surface, and cloud is filled in groove
Mother layer, the bottom surface of bottom of the pot wall 1 and the bottom surface of mica layer are flush, and the thickness of mica layer is 1.5mm；Electrothermal tube coiling is installed on cloud
The underface of mother layer, mica layer and electrothermal tube arranged concentric, the ring width of mica layer are less than the ring width and the ratio between ring width value of electrothermal tube
It is 0.5.It is, of course, also possible to which substrate 8 is arranged between bottom of the pot wall 1 and electrothermal tube, which is that thermal coefficient is not less than 100W/
The copper coin of mk.
The insulating pot of above eight kinds of embodiments is during liquid water heats in pot, by bottom of the pot wall 1
Bottom surface groove in filling thermal coefficient be not more than the low thermal conductivity material of 40W/mk, and the low thermal conductivity material position
In the surface of heating element 4, the heat conduction along 1 thickness direction of bottom of the pot wall can be slowed down, the transverse direction for being conducive to bottom of the pot wall 1 is heated equal
Weighing apparatus, reduces the wall superheat degree of bottom of the pot wall 1, and then can effectively avoid the intensive phenomenon of the local steam bubble on bottom of the pot wall 1, reaches aobvious
Write the effect of noise reduction.
Specific embodiment 1：Using Fig. 2, Fig. 3 and insulating pot structure shown in fig. 6, i.e., it is formed in the top surface of bottom of the pot wall 1
In circular protrusion 11, the bottom surface of bottom of the pot wall 1 is correspondingly formed with the annular groove from the recessed protrusion in the bottom surface 11, and
Filled with circular mica layer in the annular groove, the bottom surface of bottom of the pot wall 1 and the bottom surface of mica layer are flush；In bottom of the pot wall
1 bottom surface is connected with aluminium sheet, and electrothermal tube is installed on the bottom surface of the aluminium sheet and the underface positioned at mica layer.
Wherein, the heating power of electrothermal tube：1800W, water in pot：1.7L.
Testing procedure：
1) water of peak level, is put into pot；
2), water temperature sensor is placed in the middle of the height of water level at kettle center；
3), start timing measuring by "start" button；
4) stop timing measuring when, water temperature rises to 80 DEG C in pot；
5) noise figure for, rejecting sound power value≤45dB carries out A weighteds to test noise value, takes average acoustical power conduct
Decision content.
Obtain noise data such as the following table 1 when insulating pot work.
Table 1：Noise data table
Wherein, thickness is the thickness of mica layer (as low thermal conductivity material layer 9), and the ratio between ring width value is mica layer and electricity
The ratio between the ring width value of heat pipe (as heating element 4).Specifically, low thermal conductivity material layer 9 is thicker, is more conducive to slow down along pot
The heat conduction of 1 thickness direction of bottom wall, then the wall superheat degree of bottom of the pot wall 1 is lower, is also more conducive to noise reduction.In addition, low heat conduction
The ratio between index material 9 and the ring width value of heating element 4 are bigger, are more conducive to slow down along the lateral heat transfer of bottom of the pot wall 1, then electric
The level of noise that kettle generates when working is also lower.
Comparative example 1：Using insulating pot structure shown in Fig. 10, wherein the bottom of the pot wall 1 of insulating pot is horizontal bottom of the pot wall, i.e.,
It is formed without protrusion 11 on the top surface of bottom of the pot wall 1, is correspondingly also formed without groove in the bottom surface of bottom of the pot wall 1, it certainly, should
Insulating pot does not just contain low thermal conductivity material layer 9 yet, in addition, other experiment parameters are consistent in embodiment 1.
Test result：Maximum sound power value when obtaining insulating pot work is 68.4dB, and average sound power value is 65.2dB.
Comprehensive Correlation embodiment 1 and comparative example 1 are it is found that be horizontal bottom of the pot wall 1 compared to the bottom of the pot wall 1 of insulating pot, in pot
The top surface of bottom wall 1 forms protrusion 11, and the bottom surface of bottom of the pot wall 1 correspondingly forms fluted, filling low thermal conductivity in the groove
Material, and heating element 4 is set to the underface of the low thermal conductivity material, the maximum sound power value generated is significantly less than
68.4dB, average sound power value are also significantly less than 65.2dB, and therefore, the groove formed on bottom of the pot wall 1 is located at heating element 4
Surface, and low thermal conductivity material is filled in the groove, the maximum acoustical power peace sent out when insulating pot can be made to work
Equal sound power value all reduces, to be finally reached the effect of optimization noise reduction.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (12)
1. a kind of insulating pot, wherein the insulating pot includes bottom of the pot wall (1) and heating element (4), the top of the bottom of the pot wall (1)
Face is formed with the protrusion (11) to raise up, and the bottom surface of the bottom of the pot wall (1) is correspondingly formed with from the recessed institute in the bottom surface
State the groove in protrusion (11), the low thermal conductivity material in the groove filled with thermal coefficient no more than 40W/mk with
Low thermal conductivity material layer (9) is formed, annularly coiling is installed on the low thermal conductivity material layer to the heating element (4)
(9) underface.
2. insulating pot according to claim 1, wherein the thermal coefficient of the low thermal conductivity material layer (9) is not more than
The thickness of 20W/mk, the low thermal conductivity material layer (9) not less than 0.5mm and are not more than 2mm.
3. insulating pot according to claim 1, wherein the low thermal conductivity material layer (9) is mica layer or ceramic layer.
4. insulating pot according to claim 1, wherein the bottom surface of the bottom of the pot wall (1) and the low thermal conductivity material
The bottom surface of layer (9) flushes.
5. insulating pot according to claim 1, wherein the protrusion (11) is punch forming, the bottom of the pot wall (1)
Bottom surface is formed with corresponding stamped groove.
6. insulating pot according to claim 1, wherein the top surface of the bottom of the pot wall (1) is equipped with described convex for arranging
Go out the circle ring area of portion (11)；
Wherein, the multiple protrusions (11) being along the circumferential direction spaced, the protrusion are equipped in the circle ring area
(11) it is the linear protrusion of radial direction radially extended, the annular heating element (4) and the circle ring area arranged concentric；
Alternatively, multiple linear protrusions along the extension of string direction and parallel interval are equipped in the circle ring area, it is annular
The heating element (4) and the circle ring area arranged concentric；
Alternatively, the protrusion (11) is annular protrusion, the annular heating element (4) and the annular protrusion are concentric
Arrangement.
7. insulating pot according to claim 6, wherein the inner peripheral of the low thermal conductivity material layer (9) is not more than institute
The inner peripheral of heating element (4) is stated, and the outer peripheral edge of the low thermal conductivity material layer (9) is not less than the heating element (4)
Outer peripheral edge.
8. insulating pot according to claim 7, wherein the low thermal conductivity material layer (9) and the heating element (4)
Arranged concentric, the ring width of the low thermal conductivity material layer (9) are not less than the ring width and the ratio between ring width value of the heating element (4)
No more than 2.
9. insulating pot according to claim 6, wherein the inner peripheral of the low thermal conductivity material layer (9) is more than described
The inner peripheral of heating element (4), and the outer peripheral edge of the low thermal conductivity material layer (9) is less than the outer of the heating element (4)
Periphery.
10. insulating pot according to claim 9, wherein the low thermal conductivity material layer (9) and the heating element
(4) arranged concentric, the ring width of the low thermal conductivity material layer (9) be less than the ring width of the heating element (4) and ring width value it
Than being not less than 0.5.
11. insulating pot according to claim 1, wherein the protrusion (11) is annular protrusion, the annular protrusion
Portion is formed to have the first fan annular of the first circular lance, and the heating element (4) connects the bottom surface of the bottom of the pot wall (1)
Tactile heating region is formed to have the second fan annular of the second circular lance, and the arc chord angle of first circular lance is less than described
The arc chord angle of second circular lance.
12. insulating pot according to claim 1, wherein the insulating pot further includes positioned at the bottom of the pot wall (1) and described
Substrate (8) between heating element (4), the substrate (8) are the high thermal conductivity coefficient metal that thermal coefficient is not less than 100W/mk
Plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710294739.1A CN108784336B (en) | 2017-04-28 | 2017-04-28 | Electric kettle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710294739.1A CN108784336B (en) | 2017-04-28 | 2017-04-28 | Electric kettle |
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| CN108784336B CN108784336B (en) | 2021-03-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672619A (en) * | 2004-02-23 | 2005-09-28 | 施特里克斯有限公司 | Noise reduction in water heating vessels |
| EP1651009A2 (en) * | 2004-10-21 | 2006-04-26 | Strix Limited | Heaters for liquid heating vessels |
| CN101234001A (en) * | 2007-02-01 | 2008-08-06 | 胡金高 | Fume-less cooker |
| CN202154509U (en) * | 2008-10-09 | 2012-03-07 | 翱泰温控器(深圳)有限公司 | Electric device and component |
| CN202619377U (en) * | 2012-04-26 | 2012-12-26 | 扈罗全 | Electric kettle heating plate and electric kettle |
| CN203647087U (en) * | 2012-08-17 | 2014-06-18 | 贸易联盟有限责任公司 | Electric kettle provided with heating element covered with ceramic coating |
-
2017
- 2017-04-28 CN CN201710294739.1A patent/CN108784336B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672619A (en) * | 2004-02-23 | 2005-09-28 | 施特里克斯有限公司 | Noise reduction in water heating vessels |
| EP1651009A2 (en) * | 2004-10-21 | 2006-04-26 | Strix Limited | Heaters for liquid heating vessels |
| CN101234001A (en) * | 2007-02-01 | 2008-08-06 | 胡金高 | Fume-less cooker |
| CN202154509U (en) * | 2008-10-09 | 2012-03-07 | 翱泰温控器(深圳)有限公司 | Electric device and component |
| CN202619377U (en) * | 2012-04-26 | 2012-12-26 | 扈罗全 | Electric kettle heating plate and electric kettle |
| CN203647087U (en) * | 2012-08-17 | 2014-06-18 | 贸易联盟有限责任公司 | Electric kettle provided with heating element covered with ceramic coating |
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| Publication number | Publication date |
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| CN108784336B (en) | 2021-03-02 |
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