CN105025596B - Heat dissipation base member and canned type PTC thermistor heater - Google Patents
Heat dissipation base member and canned type PTC thermistor heater Download PDFInfo
- Publication number
- CN105025596B CN105025596B CN201510482014.6A CN201510482014A CN105025596B CN 105025596 B CN105025596 B CN 105025596B CN 201510482014 A CN201510482014 A CN 201510482014A CN 105025596 B CN105025596 B CN 105025596B
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- Prior art keywords
- cavity
- heat dissipation
- positioning rib
- location muscle
- ptc heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0429—For vehicles
- F24H3/0435—Structures comprising heat spreading elements in the form of fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
- F24H9/1872—PTC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/02—Heaters using heating elements having a positive temperature coefficient
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
- H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a heat dissipation substrate and a sealed PTC thermistor heater, wherein the heat dissipation substrate comprises a cavity body with an accommodating cavity, and a plurality of heat dissipation fins are respectively fixed on the outer surfaces of the top and the bottom of the cavity body; the upper part and the lower part of the inner wall on the left side of the cavity are respectively provided with a first positioning rib, the upper part and the lower part of the inner wall on the right side of the cavity are respectively provided with a second positioning rib, the inner surface of the left side of the accommodating cavity between the two first positioning ribs is an outward-convex cambered surface, the inner surface of the right side of the accommodating cavity between the two second positioning ribs is also an outward-convex cambered surface, and the outer walls of the left side and the right side of the cavity are both groove-shaped structures; the interval of two first location muscle and the interval of second location muscle all are less than PTC heating element's thickness, and the interval that is located between first location muscle and the second location muscle on upper portion and the interval that is located between first location muscle and the second location muscle of lower part all are less than radiating fin's length. The invention can work for a long time without electrical potential safety hazard.
Description
Technical Field
The present invention relates to a thermistor heater, and more particularly, to a heat dissipating substrate and a sealed PTC (Positive Temperature Coefficient) thermistor heater.
Background
The Positive Temperature Coefficient (PTC) thermistor heater has the characteristics of automatic constant Temperature, no open fire, long service life, small influence of power supply voltage fluctuation, high electric heat conversion rate and the like due to the unique characteristics, and is widely applied to the electrical appliance industries of fan heaters, clothes dryers, water heaters, air conditioners and the like.
After the PTC heating element is arranged in the containing cavity of the aluminum tube, the PTC heating element is easy to approach to two side walls of the aluminum tube, and when pressure is applied to two sides of the aluminum tube to enable the aluminum tube to be compressed and deformed, the PTC heating element is subjected to rigid pressure and is easy to crush, so that potential quality hazards are caused, and quality worry is brought to users.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a heat dissipation base body and a sealed PTC thermistor heater, which can work for a long time and have no electrical potential safety hazard.
A heat dissipation base body is used for containing a PTC heating assembly and comprises a cavity body, wherein the cavity body is provided with a hollow containing cavity extending along the length direction of the cavity body, a plurality of heat dissipation fins are respectively and centrally fixed on the outer surfaces of the top and the bottom of the cavity body, and the length of each heat dissipation fin along the width direction of the cavity body is smaller than the width of the cavity body; the upper part and the lower part of the left inner wall of the cavity in the accommodating cavity are respectively provided with a first positioning rib extending along the length direction of the cavity, correspondingly, the upper part and the lower part of the right inner wall of the cavity in the accommodating cavity are respectively provided with a second positioning rib extending along the length direction of the cavity, the left inner surface of the accommodating cavity between the two first positioning ribs is an outward-convex cambered surface, the right inner surface of the accommodating cavity between the two second positioning ribs is also an outward-convex cambered surface, and the left outer wall and the right outer wall of the cavity are both groove-shaped structures extending along the length direction of the cavity; two the interval and two of first location muscle the interval of second location muscle all is less than PTC heating element's thickness is located upper portion interval between first location muscle and the second location muscle and be located the lower part interval between first location muscle and the second location muscle all is less than radiating fin follows cavity width direction's length.
In above technical scheme, first location muscle and second location muscle make PTC heating element jointly to fix a position and holding the intracavity in the middle of, and because two between the first location muscle the left side internal surface that holds the chamber is the cambered surface to the evagination, and two between the second location muscle the right side internal surface that holds the chamber also is the cambered surface to the evagination, when suppressing the cavity, will outwards warp after the left side and the right side atress of cavity, and the slot-like structure provides the space of deformation, can not receive the lateral pressure to PTC heating element's side, therefore PTC heating element is difficult for the crushing, and work is safer.
Preferably, a plurality of the heat dissipation fins are arranged in parallel and at equal intervals.
Preferably, each of the heat dissipating fins has a convex-concave undulating structure.
The prior radiating fin is processed into a flat curved surface, the fin is not good in strength and rigidity, the fin is easy to fall down, the fins are easy to stick together, the ventilation is not smooth, certain wind resistance is generated, and dust and scale are easy to deposit on the fins. The concave-convex structure not only increases the heat dissipation area, but also improves the heat dissipation efficiency; the radiating fins can also be acted as reinforcing ribs, so that the rigidity and the strength of the radiating fins are enhanced, and the radiating fins are not easy to fall down in the working process, so that a series of problems caused by the falling can be solved; and because of its intensity and rigidity are good, can let the fin process to be thinner under the condition of equal heat radiating area, make material manufacturing cost greatly reduce, saved the material.
Preferably, the heat dissipation base body is of an integrally formed structure.
Preferably, the heat dissipation base body is made of an aluminum profile.
Preferably, the cavity is a rectangular body, and the first positioning rib and the second positioning rib are symmetrically arranged.
Preferably, the top surface of the PTC heating element corresponds to the top surface of the cavity, and the middle of the inner surface of the top of the cavity is low and the two ends of the inner surface of the bottom of the cavity are high and the two ends of the inner surface of the bottom of the cavity are low.
Due to the technical scheme, when the heat dissipation substrate is pressed, the rigid pressure of the aluminum pipe on the PTC heating assembly is reduced, so that the damage to the PTC heating assembly is reduced.
The utility model provides a canned type PTC thermistor heater, includes heat dissipation base member, PTC heating element and waterproof sealing portion, PTC heating element is located between first location muscle and the second location muscle and compressed tightly between two parties hold the intracavity, the heat dissipation base member hold the both ends in chamber respectively and be equipped with one waterproof sealing portion.
Preferably, the PTC heating assembly includes a PTC thermistor, two electrode terminals, a metal electrode plate and an insulating layer, the two electrode terminals are used for being connected with an external power supply and powered on to make the PTC thermistor generate heat, the metal electrode plate is respectively attached to the upper surface and the lower surface of the PTC thermistor, the two electrode terminals are located on the same side of the PTC thermistor and are respectively connected with the metal electrode plate, the insulating layer is coated on the periphery of the metal electrode plate, and the two electrode terminals extend out of the waterproof sealing part.
Preferably, the waterproof sealing part is a waterproof insulating sealant capable of effectively blocking water.
Drawings
Fig. 1 is a schematic perspective view of a heat dissipation substrate according to a first embodiment of the invention;
fig. 2 is a schematic perspective view of a sealed PTC thermistor heater according to a second embodiment of the present invention;
fig. 3 is an exploded schematic view of fig. 2.
Detailed Description
The present invention, which is explained in detail below by way of preferred embodiments, provides a heat-dissipating substrate for housing a PTC heat-generating component.
Example one
As shown in fig. 1, the heat dissipation substrate 1 includes a cavity 11, the cavity 11 is a rectangular body and has a hollow accommodating cavity 12 extending along a length direction of the cavity, a plurality of heat dissipation fins 13 are respectively fixed on outer surfaces of a top and a bottom of the cavity 11 in the middle, a length of the heat dissipation fin 13 on the outer surface of the top of the cavity along the width direction of the cavity 11 is smaller than a width of the top of the cavity 11, and a length of the heat dissipation fin 13 on the outer surface of the bottom of the cavity along the width direction of the cavity 11 is smaller than a width of the bottom of the cavity 11. The upper portion and the lower part of the left side inner wall of the cavity in the holding cavity 12 are respectively provided with a first positioning rib 14 extending along the length direction of the cavity, symmetrically, the upper portion and the lower part of the right side inner wall of the cavity in the holding cavity are respectively provided with a second positioning rib 15 extending along the length direction of the cavity, the left side inner surface 16 of the holding cavity between the two first positioning ribs 14 is an outward-convex arc surface (namely, the opening of the arc surface faces the holding cavity), the right side inner surface 17 of the holding cavity between the two second positioning ribs 15 is also an outward-convex arc surface, and the outer walls of the left side and the right side of the cavity are groove-shaped structures 18 extending along the length direction of the cavity. The interval of two first location muscle 14 and the interval of two second location muscle 15 all are less than PTC heating element's thickness, and the interval that lies in between first location muscle 14 and the second location muscle 15 on upper portion and the interval that lies in between first location muscle 14 and the second location muscle 15 of lower part all are less than radiating fin 13's width, like this when the suppression heat dissipation base member, can reduce the influence to PTC heating element as far as.
The heat dissipation fins 13 at the top and the bottom of the cavity are arranged in parallel and at equal intervals, each heat dissipation fin 13 is in a convex-concave fluctuating structure, and in the embodiment, the surface of each heat dissipation fin is a wave-shaped curved surface. The heat dissipation base member is the integrated into one piece structure, and the material is the aluminium alloy, and it is specific that cavity, radiating fin and first location muscle and second location muscle are formed by aluminium alloy integrated into one piece processing, and radiating fin is formed by machine tool relieving processing in the top and the bottom of heat dissipation base member.
The middle 111 of the inner surface of the top of the cavity 11 corresponding to the top surface of the PTC heat generating element is low and the two ends 112 are high, and the middle 113 of the inner surface of the bottom of the cavity 11 corresponding to the bottom surface of the PTC heat generating element is high and the two ends 114 are low.
Example two
As shown in fig. 2-3, the present invention further provides a sealed PTC thermistor heater, which comprises a heat dissipation substrate 1, a PTC heating element 2 and a waterproof sealing portion 3 in the first embodiment, wherein the PTC heating element 2 is located between a first positioning rib 14 and a second positioning rib 15 and is pressed in a central space in a containing cavity, and two ends of the containing cavity of the heat dissipation substrate 1 are respectively provided with a waterproof sealing portion 3; the PTC heating assembly 2 comprises a PTC thermistor 21, two electrode terminals 22 for connecting with an external power supply and electrifying the PTC thermistor 21 to generate heat, a metal electrode plate 23 and an insulating layer 24, wherein the upper surface and the lower surface of the PTC thermistor 21 are respectively tightly attached to one metal electrode plate 23, the metal electrode plate 23 provides working voltage for the PTC thermistor 21, the two electrode terminals 22 are positioned at the same side of the PTC thermistor, one end of each electrode terminal 22 is connected with the power supply through a lead, and the other end of each electrode terminal 22 is connected with the metal electrode plate 23 (fixed by riveting or welding), so that the metal electrode plate 23 can obtain the voltage provided by the power supply and form a circuit together with the PTC thermistor 21. Insulating layer 24 cladding is in the periphery of metal electrode board 23, and two electrode terminal 22 stretch out from waterproof sealing portion 3, and waterproof sealing portion 3 is sealed for the waterproof insulation that can effectively block water for it can seal completely to hold the chamber.
EXAMPLE III
The difference from the first embodiment is that the shape of the heat dissipation fins on the heat dissipation substrate is a zigzag curved surface.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions, such as changing the shape of the fins to trapezoidal curved surfaces, can be made without departing from the spirit of the invention, and should be considered as falling within the scope of the patent protection defined by the claims filed with the invention.
Claims (10)
1. A heat dissipation base body is used for containing a PTC heating assembly and is characterized by comprising a cavity body, wherein the cavity body is provided with a hollow containing cavity extending along the length direction of the cavity body, a plurality of heat dissipation fins are respectively and centrally fixed on the outer surfaces of the top and the bottom of the cavity body, and the length of each heat dissipation fin along the width direction of the cavity body is smaller than the width of the cavity body;
the upper part and the lower part of the left inner wall of the cavity in the accommodating cavity are respectively provided with a first positioning rib extending along the length direction of the cavity, correspondingly, the upper part and the lower part of the right inner wall of the cavity in the accommodating cavity are respectively provided with a second positioning rib extending along the length direction of the cavity, the left inner surface of the accommodating cavity between the two first positioning ribs is an outward-convex cambered surface, namely, the opening of the cambered surface faces the accommodating cavity, the right inner surface of the accommodating cavity between the two second positioning ribs is also an outward-convex cambered surface, and the outer walls of the left side and the right side of the cavity are groove-shaped structures extending along the length direction of the cavity; when the PTC heating assembly is accommodated in the heat dissipation base body, the first positioning rib and the second positioning rib jointly enable the PTC heating assembly to be positioned in the accommodating cavity in the middle, when the cavity is pressed, the left side and the right side of the cavity deform outwards after being stressed, and the groove-shaped structure provides a deformation space;
the first positioning rib and the second positioning rib which are positioned at the upper part are also positioned on the inner surface of the top of the cavity body at the same time, and the first positioning rib and the second positioning rib which are positioned at the lower part are also positioned on the inner surface of the bottom of the cavity body at the same time;
two the interval and two of first location muscle the interval of second location muscle all is less than PTC heating element's thickness is located upper portion interval between first location muscle and the second location muscle and be located the lower part interval between first location muscle and the second location muscle all is less than radiating fin follows cavity width direction's length.
2. The heat-dissipating substrate of claim 1, wherein: and the plurality of radiating fins are arranged in parallel at equal intervals.
3. The heat-dissipating substrate of claim 1, wherein: each radiating fin is in a convex-concave fluctuating structure.
4. The heat-dissipating substrate of claim 1, wherein: the heat dissipation base body is of an integrally formed structure.
5. The heat-dissipating substrate of claim 1, wherein: the heat dissipation substrate is made of aluminum profiles.
6. The heat-dissipating substrate of claim 1, wherein: the cavity is a rectangular body, and the first positioning rib and the second positioning rib are symmetrically arranged.
7. The heat-dissipating substrate of claim 1, wherein: the top surface of the PTC heating component corresponds to the middle of the inner surface of the top of the cavity, the two ends of the inner surface are high, the bottom surface of the PTC heating component corresponds to the middle of the inner surface of the bottom of the cavity, the two ends of the inner surface are high, and the two ends of the inner surface are low.
8. A sealed PTC thermistor heater, characterized in that: the heat dissipation substrate comprises the heat dissipation substrate, the PTC heating assembly and the waterproof sealing part, wherein the PTC heating assembly is located between the first positioning rib and the second positioning rib and is pressed in the accommodating cavity in the middle, and the two ends of the accommodating cavity of the heat dissipation substrate are respectively provided with the waterproof sealing part.
9. The sealed PTC thermistor heater of claim 8, wherein: the PTC heating assembly comprises a PTC thermistor, two electrode terminals, a metal electrode plate and an insulating layer, wherein the two electrode terminals, the metal electrode plate and the insulating layer are used for being connected with an external power supply to enable the PTC thermistor to generate heat, the upper surface and the lower surface of the PTC thermistor are respectively tightly attached to one of the metal electrode plate, the two electrode terminals are located on the same side of the PTC thermistor and are respectively connected with the metal electrode plate, the insulating layer is coated on the periphery of the metal electrode plate, and the two electrode terminals extend out of the waterproof sealing part.
10. A sealed type PTC thermistor heater according to claim 8 or 9, wherein: the waterproof sealing part is a waterproof insulating sealant capable of effectively resisting water.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678058.4A CN110730519A (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
| CN201510482014.6A CN105025596B (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
| EP16732215.5A EP3154311B1 (en) | 2015-08-03 | 2016-05-13 | Heat dissipation substrate and seal type ptc thermistor heater |
| PCT/CN2016/081996 WO2017020622A1 (en) | 2015-08-03 | 2016-05-13 | Heat dissipation substrate and seal type ptc thermistor heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482014.6A CN105025596B (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910678058.4A Division CN110730519A (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105025596A CN105025596A (en) | 2015-11-04 |
| CN105025596B true CN105025596B (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482014.6A Active CN105025596B (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
| CN201910678058.4A Pending CN110730519A (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910678058.4A Pending CN110730519A (en) | 2015-08-03 | 2015-08-03 | Heat dissipation base member and canned type PTC thermistor heater |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3154311B1 (en) |
| CN (2) | CN105025596B (en) |
| WO (1) | WO2017020622A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105025596B (en) * | 2015-08-03 | 2022-05-24 | 镇江东方山源电热有限公司 | Heat dissipation base member and canned type PTC thermistor heater |
| DE102017121063A1 (en) * | 2017-05-24 | 2018-11-29 | Webasto SE | Heating conductor and heater |
| DE102017120467A1 (en) * | 2017-09-06 | 2019-03-07 | Dbk David + Baader Gmbh | Heaters and process for its manufacture and heating registers |
| FR3073038A1 (en) * | 2017-10-30 | 2019-05-03 | Valeo Systemes Thermiques | TUBE FOR A HEATING DEVICE FOR A MOTOR VEHICLE WITH A RELIEF IN A PROJECT TO THE INTERIOR |
| FR3077459B1 (en) * | 2018-01-31 | 2020-07-03 | Valeo Systemes Thermiques | HEATING UNIT, HEATING RADIATOR AND AIR CONDITIONING UNIT, ESPECIALLY A MOTOR VEHICLE |
| CN109041283A (en) * | 2018-08-21 | 2018-12-18 | 宿州国威热敏新材料有限公司 | The heat sink strip and its manufacturing method and purposes of a kind of PTC thermo-sensitive material heating device |
| CN113811031B (en) * | 2021-08-20 | 2023-08-22 | 曹黎霞 | PTC heater |
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-
2015
- 2015-08-03 CN CN201510482014.6A patent/CN105025596B/en active Active
- 2015-08-03 CN CN201910678058.4A patent/CN110730519A/en active Pending
-
2016
- 2016-05-13 WO PCT/CN2016/081996 patent/WO2017020622A1/en active Application Filing
- 2016-05-13 EP EP16732215.5A patent/EP3154311B1/en active Active
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| US20140169776A1 (en) * | 2011-06-21 | 2014-06-19 | Behr Gmbh & Co. Kg | Heat exchanger |
| CN203225901U (en) * | 2012-12-18 | 2013-10-02 | 上海华族实业有限公司 | Ceramic ptc fin |
| CN203590502U (en) * | 2013-07-22 | 2014-05-07 | 苏州新业电子有限公司 | Electric vehicle-used high waterproofness PTC heater |
| CN104797015A (en) * | 2015-04-08 | 2015-07-22 | 蒋国屏 | Thermal sensitive ceramic heater and heating body and heating core applied to thermal sensitive ceramic heater |
| CN204859578U (en) * | 2015-08-03 | 2015-12-09 | 深圳山源电器股份有限公司 | Heat dissipation base member and canned type PTC thermistor heater |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3154311A4 (en) | 2017-11-29 |
| EP3154311B1 (en) | 2019-12-11 |
| EP3154311A1 (en) | 2017-04-12 |
| WO2017020622A1 (en) | 2017-02-09 |
| CN105025596A (en) | 2015-11-04 |
| CN110730519A (en) | 2020-01-24 |
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