CN109756999A - A kind of mute coating of liquid heating vessel backplate surface - Google Patents
A kind of mute coating of liquid heating vessel backplate surface Download PDFInfo
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- CN109756999A CN109756999A CN201910146241.XA CN201910146241A CN109756999A CN 109756999 A CN109756999 A CN 109756999A CN 201910146241 A CN201910146241 A CN 201910146241A CN 109756999 A CN109756999 A CN 109756999A
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Abstract
The invention discloses a kind of mute coating of liquid heating vessel backplate surface, including metallic substrates and coating, coating is coated in metallic substrates, coating is equipped with multiple heating cavities；Wherein, after heating vessel injection liquid, liquid is covered on coating surface, and liquid is by squeezing air and forming air chamber in heating cavity；After air heats expansion in air chamber, heating cavity is left, forms the nucleus of boiling above heating cavity, the generation of noise can be significantly reduced, and can increase the efficiency of transmission of heat, energy conservation.
Description
Technical field
The present invention relates to liquid vessel technical field of heating, and in particular to a kind of liquid heating vessel backplate surface it is mute
Coating.
Background technique
Hot-water bottle is during heating liquid, as the temperature of heating panel increases, heating panel and heated liquid body
When the temperature difference of temperature increases to a certain extent (before heated liquid boiling), heating panel surface generates bubble, and bubble is along heating surface
Plate sliding, aggregation are grown up, and be deformed vibration, and heating panel is eventually disengaged from, after bubble is detached from heating panel, heat transfer
Into heating liquid, reduces rapidly, collapse, finally disappear in the unsaturated heating liquid of temperature.It is detached from and collapses in bubble
Process generate vibration, lead to the generation of noise, influence product comforts of use.
The hot-water bottle of metallic substrates, the rebound due to metal to sound, sound are larger.Some products are in Metal Substrate in the market
One layer of coating is coated on bottom, since coating surface is softer, while more loose compared with metal, can from absorbing noise to a certain degree,
Reduce the sense of discomfort that noise generates.But the contact angle of coating and heating liquid is bigger, and the bubble generated in heating process is easier
Aggregation, vibration is also bigger when the bubble that bubble generates when being detached from is bigger, bubble is detached from, and generates bigger noise.And due to
Bubble is long in the time of heating panel superficial residence, forms vaporization membrane, is formed to the heat transfer between heating liquid and heating panel
Certain barrier is easy to cause the heat of heating panel to gather, and temperature rises so high, and triggers temperature controller, causes early jump, can not incite somebody to action
Heating liquid is boiled to fluidized state.
Coating it is small with contact angle, it is meant that coating material than more hydrophilic, water be easier infiltration and permeation coating, reduce
Adhesive force between coating and metallic substrates causes the peel resistance to boil water of coating poor.And contact angle is small, and product is easy knot
Dirt.
The small coating of contact angle simultaneously, it is not easy to form gasification core, be unfavorable for the generation of nucleate boiling.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of mute coating of liquid heating vessel backplate surface, Neng Gouming
The aobvious generation for reducing noise, and can increase the efficiency of transmission of heat, energy conservation.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of liquid heating vessel bottom is provided
The mute coating of plate surface, including metallic substrates and coating are coated with the coating in the metallic substrates, set on the coating
There are multiple heating cavities；Wherein, after heating vessel injection liquid, liquid is covered on the coating surface, and liquid is empty by squeezing
Gas simultaneously forms air chamber in the heating cavity；After air heats expansion in the air chamber, the heating cavity is left,
The nucleus of boiling is formed above the heating cavity.
Wherein, the heating cavity forms vertical chamfering with the coating surface, is equipped in the air chamber described vertical
Chamfering.
Wherein, after the air heats expansion in the air chamber, the numerous nucleus of boiling is formed, it is a certain number of when reaching
After the nucleus of boiling, nucleate boiling is formed in heating liquid.
Wherein, the heating cavity is groove.
Wherein, the air chamber is symmetrically distributed in the heating cavity two sides.
Wherein, coating surface is arranged in the groove at equal intervals, and multiple grooves are grid-shaped in coating surface
Distribution.
Wherein, the width of the groove is 2-100um, and the depth of groove is 2-100um.
Wherein, the projected area of the groove accounts for the 20-60% of the coating area.
Mute coating according to claim 1, which is characterized in that the coating is polytetrafluoroethylmodified modified PES painting
Layer, the coating layer thickness are 15-20um.
In addition, another technical solution used in the present invention is: a kind of mute coating of liquid heating vessel backplate surface
Preparation method:
(1) metallic substrates of heating panel are prepared；
(2) it is coated on the metal substrate surface using polytetrafluoroethylmodified modified PES coating, forms coating；
(3) coating obtained through step (2), surface engraves groove with ultraviolet laser.
The beneficial effects of the present invention are: the present invention has coated one layer of coating, coating in the metallic substrates on heating vessel
Polytetrafluoroethylmodified modified PES coating is taken, the higher coating of intrinsic contact angle of the material, after placing groove, coating appearance is connect
Feeler greatly reduces, make coating it is microcosmic on have certain hydrophobic performance, macroscopically hydrophilic characteristic.Fig. 2 can guarantee groove
There is a large amount of gas bubbles left, during heating liquid, these residual airs form the numerous nucleus of boiling, greatly increase vapour
Change the quantity of core, forms nucleate boiling.Form the state of Fig. 3.And after placing groove, heating liquid is contacted with coating surface
Angle reduces, and can be detached from heating panel surface rapidly after liquid gasification, reduce bubble and produce because being trapped in heating panel surface
Raw vibration reduces the generation of noise.
Detailed description of the invention
Fig. 1 is bubble production principle figure；
Fig. 2 is groove bubble production principle figure one；
Fig. 3 is that groove generates bubble theory figure two (nucleate boiling)；
Fig. 4 is a kind of structural schematic diagram one (meshed grooves) of groove；
Fig. 5 is a kind of structural schematic diagram two of groove；
Fig. 6 is the groove structure schematic diagram (dotted groove) of graininess protrusion.
Figure label explanation: 1, coating；2, metallic substrates；3, heating panel；4, air chamber；5, liquid is heated；6, it heats
Cavity；601, vertical chamfering.
Specific embodiment
The invention will now be described in detail with reference to the accompanying drawings:
Fig. 1 is that container is during heating liquid under normal circumstances referring to FIG. 1-2, with the temperature of heating panel 3
It increases, when the temperature difference of heating panel 3 and heated liquid temperature increases to a certain extent (before heated liquid boiling), metallic substrates
2 surfaces generate bubble, and bubble is slided along heating panel 3, and aggregation grows up, and be deformed vibration, eventually disengages from metallic substrates 2,
After bubble is detached from metallic substrates 2, heat transfer reduces rapidly into heating liquid, collapses, it is unsaturated finally to disappear in temperature
It heats in liquid.Be detached from bubble and the process that collapses generate vibration, lead to the generation of noise, influence product use it is comfortable
Degree.
The hot-water bottle of metallic substrates 2, the rebound due to metal to sound, noise is larger, and people is allowed to feel uncomfortable.Mesh
Before, some products coat one layer of coating 1 in metallic substrates 2 in the market, since 1 surface of coating is softer, while more compared with metal
Add it is loose, can to a certain degree absorb noise, reduce noise generate sense of discomfort.But in actual application process, coating 1 with
The contact angle for heating liquid is bigger, the easier aggregation of bubble 4 generated in heating process, and the bubble that bubble generates when being detached from is got over
Greatly, vibration is also bigger when bubble is detached from, and generates bigger noise.And since bubble is in the time of heating panel superficial residence
It is long, vaporization membrane is formed, certain barrier is formed to the heat transfer between heating liquid and heating panel, is easy to cause heating panel
Heat accumulation, temperature rise so high, and trigger temperature controller, cause early jump, can not boil heating liquid to fluidized state.
The characterization contact angle of coating is small, it is meant that for coating material than more hydrophilic, water is easier infiltration and permeation coating, drop
Adhesive force between low coating and metallic substrates causes the peel resistance to boil water of coating poor.And contact angle is small, and product is easy knot
Dirt, it is not easy to form gasification core, be unfavorable for the generation of nucleate boiling.
Therefore, the above problem is solved it is necessary to find a kind of biggish coating material of intrinsic contact angle, and to find one
The method that kind reduces coating and heats Liquid contact angle.
Specifically, referring to Fig. 2-Fig. 3, technical solution proposed by the present invention is: providing a kind of liquid heating vessel bottom plate table
The mute coating in face, including metallic substrates 2 and coating 1, coating 1 is coated in metallic substrates 2, and coating 1 is equipped with multiple heating
Cavity 6, heating cavity 6 form vertical chamfering 601 with 1 surface of coating；Wherein, after heating vessel injection liquid, liquid is covered on
1 surface of coating, for liquid by squeezing air and forming air chamber 4 in 601 position of vertical chamfering of heating cavity 6, air chamber 4 is right
Title is distributed in 6 two sides of heating cavity；After air heats expansion in air chamber 4, leave after heating cavity 6 on heating cavity 6
It is rectangular after air heats expansion in air chamber 4, to form the numerous nucleus of boiling at the nucleus of boiling, it is a certain number of when reaching
After the nucleus of boiling, nucleate boiling is formed in heating liquid.
Particularly, heating cavity 6 is groove, and 1 surface of coating is arranged in groove at equal intervals, and multiple grooves are in coating table
Face distributes as net shape, and the width of groove is 2-100um, and the depth of groove is 2-100um, and groove projected area accounts for 1 face of coating
Long-pending 20-60%.
Particularly, coating 1 is polytetrafluoroethylmodified modified PES coating, and coating 1 is with a thickness of 15-20um.
In addition, another technical solution used in the present invention is: a kind of mute coating of liquid heating vessel backplate surface
Preparation method:
(1) metallic substrates 2 of heating panel are prepared；
(2) it is coated on 2 surface of metallic substrates using polytetrafluoroethylmodified modified PES coating, forms coating 1；
(3) coating 1 obtained through step (2), surface engraves groove with ultraviolet laser.
The present invention has coated one layer of coating 1 in the metallic substrates 2 on heating vessel, and coating 1 takes polytetrafluoroethylene (PTFE) to change
Property PES coating, the higher coating of intrinsic contact angle of the material, place groove after, 1 apparent contact angle of coating greatly reduces, and makes
There is certain hydrophobic performance on coating 1 is microcosmic, macroscopically hydrophilic characteristic.Fig. 2 can guarantee that groove has a large amount of bubble residual
It stays, during heating liquid, these residual airs form the numerous nucleus of boiling, the quantity of the nucleus of boiling is greatly increased,
Form nucleate boiling.Form the state of Fig. 3.And after placing groove, heating liquid and contact angle on surface of coating reduce, liquid gas
Heating panel surface can be detached from after change rapidly, reduces the vibration that bubble is generated because being trapped in heating panel surface, is reduced
The generation of noise.
Next, the present invention will be described in conjunction with specific embodiments:
The first embodiment provided by the invention, referring to figure 4., in embodiment 1, the coating material used is polytetrafluoro
Ethylene coats a strata tetrafluoroethene on 2 surface of heating panel metallic substrates, the reasons why using polytetrafluoroethylene material (PTFE)
Have: firstly, nearly all substance is not bonded with PTFE coating with non-stick；Moreover, film caused by being made with it is very thin, it can
To show good non-adhesiveness energy, is conducive to the quantity for increasing the nucleus of boiling in heating, forms nucleate boiling, in addition it
Have a good heat resistance, PTFE coating has an excellent heat-resistant quality, the short time can high temperature resistant to 300 DEG C, generally 240 DEG C~
It can be used continuously between 260 DEG C, there is significant thermal stability, do not melt at high temperature, be completely suitable for our daily and add
Hanker.
In embodiment 1, the PTFE used is polytetrafluoroethylmodified modified PES coating, with a thickness of 15-20um.Through overtesting
It obtains, coating is uncoated before groove, and measuring with the surface contact angle of water is 85 °；
With reference to Fig. 5,1 surface of coating engraves latticed groove as shown below with ultraviolet laser, and the width (Y) of groove is
20um, the Edge Distance (X) between parallel groove is 40um, depth of groove 5um:
After engraving groove, the contact angle for measuring coating surface and water is 45 °, and the heating panel for having scribed groove is assembled into
Kettle tests noise to boil water.
Specific experiment data are as follows:
| Scheme | It is uncoated | Coating | Coating+(embodiment 1) |
| Noise (decibel) | 69 | 63 | 51 |
It will be seen that not use noise decibel when coating 1 be 69, general using other from experimental result
The noise decibel of coating is 63, and noise decibel is 51 when use PTFE, it is clear that noise when using PTFE material coating
It is smaller, moreover, because PTFE hydrophily itself is poor, in addition being provided with groove on coating in the present embodiment, groove is set
Effect is the angle for reducing coating and heating liquid, so that groove has a large amount of gas bubbles left, in the process of heating liquid
In, these residual airs form the numerous nucleus of boiling, greatly increase the quantity of the nucleus of boiling, form nucleate boiling.Form Fig. 3
State.And after placing groove, surface contact angle reduces, and can be detached from heating panel surface rapidly after liquid gasification, reduces
The vibration that bubble is generated because being trapped in heating panel surface, to reduce the generation of noise.
Second of embodiment provided by the invention, please refers to Fig. 6:
Embodiment 2, the coating surface described in embodiment one scribe dotted groove as shown below, and dotted groove diameter is
20um, the distance of central point is 40um between two neighboring dotted groove.
Specific experiment data are as follows:
| Scheme | Dotted groove |
| Noise (decibel) | 53 |
In the present embodiment 2, groove is more slightly higher than net like using noise caused by dot type compared with Example 1
It 2 decibels, can be ignored substantially, the present embodiment 2 is only a conversion scheme in embodiment 1.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of mute coating of liquid heating vessel backplate surface, including metallic substrates and coating, applied in the metallic substrates
It is furnished with the coating, which is characterized in that the coating is equipped with multiple heating cavities；Wherein, after heating vessel injection liquid, liquid
Body is covered on the coating surface, and liquid is by squeezing air and forming air chamber in the heating cavity；The air chamber
After interior air heats expansion, the heating cavity is left, forms the nucleus of boiling above the heating cavity.
2. mute coating according to claim 1, which is characterized in that the heating cavity forms vertical with the coating surface
Straight chamfering, the air chamber is interior to be equipped with the vertical chamfering.
3. mute coating according to claim 1, which is characterized in that after the air heats expansion in the air chamber, shape
At multiple nucleus of boiling, it is made to form nucleate boiling in heating liquid.
4. mute coating according to claim 1, which is characterized in that the heating cavity is groove.
5. mute coating according to claim 1, which is characterized in that the air chamber is symmetrically distributed in the heating cavity
Two sides.
6. mute coating according to claim 3, which is characterized in that the coating table is arranged in the groove at equal intervals
Face, and multiple grooves distribute as net shape in the coating surface.
7. the mute coating of liquid heating vessel backplate surface according to claim 3, which is characterized in that the groove
Width is 2-100um, and the depth of groove is 2-100um.
8. mute coating according to claim 3, which is characterized in that the projected area of the groove accounts for the coating area
20-60%.
9. mute coating according to claim 1, which is characterized in that the coating is polytetrafluoroethylmodified modified PES coating,
The coating layer thickness is 15-20um.
10. a kind of preparation method of the mute coating of liquid heating vessel backplate surface, it is characterised in that:
(1) metallic substrates of heating panel are prepared；
(2) it is coated on the metal substrate surface using polytetrafluoroethylmodified modified PES coating, forms coating；
(3) coating is obtained through step (2), surface engraves groove with ultraviolet laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146241.XA CN109756999B (en) | 2019-02-27 | 2019-02-27 | Mute coating on bottom plate surface of liquid heater dish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146241.XA CN109756999B (en) | 2019-02-27 | 2019-02-27 | Mute coating on bottom plate surface of liquid heater dish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109756999A true CN109756999A (en) | 2019-05-14 |
| CN109756999B CN109756999B (en) | 2022-03-15 |
Family
ID=66406996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910146241.XA Active CN109756999B (en) | 2019-02-27 | 2019-02-27 | Mute coating on bottom plate surface of liquid heater dish |
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| Country | Link |
|---|---|
| CN (1) | CN109756999B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258548A (en) * | 2015-09-10 | 2016-01-20 | 华北电力大学 | Preparation method which is used for porous boiling surface and capable of controlling vaporization core |
| CN106473595A (en) * | 2015-08-28 | 2017-03-08 | 广东美的生活电器制造有限公司 | Insulating pot |
| CN106473596A (en) * | 2015-08-28 | 2017-03-08 | 广东美的生活电器制造有限公司 | Insulating pot |
| CN106993940A (en) * | 2016-01-22 | 2017-08-01 | 广东美的生活电器制造有限公司 | Heating vessel |
| CN208435288U (en) * | 2017-11-21 | 2019-01-29 | 佛山市顺德区美的电热电器制造有限公司 | Liner component and liquid heater |
-
2019
- 2019-02-27 CN CN201910146241.XA patent/CN109756999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106473595A (en) * | 2015-08-28 | 2017-03-08 | 广东美的生活电器制造有限公司 | Insulating pot |
| CN106473596A (en) * | 2015-08-28 | 2017-03-08 | 广东美的生活电器制造有限公司 | Insulating pot |
| CN105258548A (en) * | 2015-09-10 | 2016-01-20 | 华北电力大学 | Preparation method which is used for porous boiling surface and capable of controlling vaporization core |
| CN106993940A (en) * | 2016-01-22 | 2017-08-01 | 广东美的生活电器制造有限公司 | Heating vessel |
| CN208435288U (en) * | 2017-11-21 | 2019-01-29 | 佛山市顺德区美的电热电器制造有限公司 | Liner component and liquid heater |
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| Publication number | Publication date |
|---|---|
| CN109756999B (en) | 2022-03-15 |
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