CN104955179A - PTC (positive temperature coefficient) heater and electric appliance comprising same - Google Patents
PTC (positive temperature coefficient) heater and electric appliance comprising same Download PDFInfo
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- CN104955179A CN104955179A CN201510317344.XA CN201510317344A CN104955179A CN 104955179 A CN104955179 A CN 104955179A CN 201510317344 A CN201510317344 A CN 201510317344A CN 104955179 A CN104955179 A CN 104955179A
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Abstract
The invention provides a PTC (positive temperature coefficient) heater and an electric appliance comprising the same. The PTC heater comprises a PTC heating sheet, radiating fins and a metal support frame; at least partial surface of at least one of the radiating fins and the metal support frame carries an adsorption-catalysis compound system which contains at least one of oxides of noble metals and other metals and porous adsorbing material. The PTC heater allows the air to be purified without extra air purifiers and allows the formaldehyde and benzenes to be purified from the air in long term.
Description
Technical field
The present invention relates to technical field of electric appliances, particularly, relate to ptc heater and the electrical equipment containing this ptc heater.
Background technology
Be on the rise because the indoor VOC that architectural decorative and fitting materials and indoor cosmetics of everyday use cause etc. pollutes, the toxicity as formaldehyde and benzene homologues is higher, is carcinogen, and Long Term Contact can cause the life and health of human body and have a strong impact on.Current indoor air purification product, as being with the air conditioner of air-cleaning function, carries out mainly through approach such as physical absorption, chemical absorbing, catalysis for gaseous contaminant purification.Wherein physical absorbent such as the material such as active carbon, molecular sieve has adsorptive selectivity, and pollutant can only be adsorbed but it thoroughly do not removed, and easily adsorb saturated and lost efficacy, the pollutant of absorption may cause secondary pollution by desorption.Chemical absorption method effectively can remove formaldehyde by chemical reaction, but also exists ageing, can lose efficacy after chemosorbent reacts completely.Photocatalysis can long-acting removal formaldehyde and benzene homologues, but makes structure become complicated due to needs light source.
Thus, still have much room for improvement about the correlative study of purifying volatile organic compound at present.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the means proposing a kind of continuous and effective or the simple purifying volatile organic compound of structure.
In one aspect of the invention, the invention provides a kind of ptc heater.According to embodiments of the invention, this ptc heater comprises: PTC fever tablet; Fin; And metallic support framework, wherein, the area load at least partially one of at least in fin and metallic support framework has absorption-catalytic composite system, and above-mentioned absorption-catalytic composite system is contained: be selected from least one in noble metal and metal oxide; And porous adsorbing material.Inventor finds, this ptc heater can be effective to various electrical equipment and (include but not limited to air-conditioning, hot air curtain device, dehumidifier, drying machine, dryer, warm-air drier and air purifier etc.), relative to the electric equipment adopting common ptc heater, according to the electrical equipment of the embodiment of the present invention operationally, first porous adsorbing material on ptc heater absorbs the gaseous contaminant such as formaldehyde and benzene homologues of low concentration in air, when after operation certain hour, open ptc heater, by the heating of short time, the formaldehyde of absorption and benzene homologues quick catalysis are oxidized and " absorption-catalysis " compound system is regenerated, thus the effect of long-acting purify air middle formaldehyde and benzene homologues can be realized, effectively can overcome the existing adsorption method sorbing material life-span thus short, secondary pollution can be produced by desorption, the inefficacy of chemisorbed, and photocatalysis makes complex structure and other problems.
According to embodiments of the invention, fin has at least one be selected from " W " type structure, cell structure, alveolate texture.
According to embodiments of the invention, noble metal is at least one be selected from Pt, Rh, Pd, Au and Ag.
According to embodiments of the invention, said metal is oxidized at least one in the oxide and compound thereof being selected from Mn, Co, Ti, Ce, Wo, Ni.
According to embodiments of the invention, porous adsorbing material is be selected from pottery, molecular sieve, hydroxyapatite, at least one in active carbon with loose structure.
In another aspect of this invention, the invention provides a kind of electrical equipment.According to embodiments of the invention, this electrical equipment contains foregoing ptc heater.Inventor finds, according to the electrical equipment of the embodiment of the present invention operationally, first porous adsorbing material on ptc heater absorbs the gaseous contaminant such as formaldehyde and benzene homologues of low concentration in air, when after operation certain hour, open ptc heater, by the heating of short time, the formaldehyde of absorption and benzene homologues quick catalysis are oxidized and " absorption-catalysis " compound system is regenerated, thus the effect of long-acting purify air middle formaldehyde and benzene homologues can be realized, effectively can overcome the existing adsorption method sorbing material life-span thus short, secondary pollution can be produced by desorption, the inefficacy of chemisorbed, and photocatalysis makes complex structure and other problems.
According to embodiments of the invention, electrical equipment is be selected from least one in air conditioner, hot air curtain device, dehumidifier, drying machine, dryer, warm-air drier and air purifier.
Accompanying drawing explanation
Fig. 1 shows the structural representation of the ptc heater according to the embodiment of the present invention;
Fig. 2 shows the structural representation of the ptc heater according to the embodiment of the present invention;
Fig. 3 shows the schematic diagram of fin according to the embodiment of the present invention and metallic support framework surface adhesion absorption-catalytic composite system.
Embodiment
Embodiments of the invention are described below in detail.Embodiment described below is exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.Unreceipted concrete technology or condition in embodiment, according to the technology described by the document in this area or condition or carry out according to product description.Agents useful for same or the unreceipted production firm person of instrument, being can by the conventional products of commercial acquisition.
The present invention is completed by the following discovery of inventor: noble metal catalyst has excellent activity and stability, may be used for Indoor Air Formaldehyde purification, it can make formaldehyde be transformed into carbon dioxide and water in room temperature, but needs high temperature just can carry out catalytic elimination to benzene homologues.Under the high temperature conditions, non-precious metal catalyst such as metal oxide and composite catalyst thereof can remove low concentration formaldehyde and benzene homologues by catalytic oxidation mode, but will play a role, and need to adopt electric heater unit to assist and carry out.At present, in existing heating and air conditioner, the overwhelming majority is all furnished with ptc heater, so that assisted Extraction heating load when heating.If above-mentioned catalyst and ptc heater can be combined, utilize the heat that ptc heater produces, catalyst is made to play effect of catalytic oxidation removal formaldehyde and benzene homologues, the heat that can not only more effectively utilize ptc heater to produce, and can combine heating and purifying air, do not need to arrange independent purifier, simplify device structure, reduce cost.Inventor is through further investigation, proposition can in the outside of ptc heater as fin, load on metallic support framework " absorption-catalysis " compound system, replace existing common ptc heater, when equipment runs, first porous adsorbent on ptc heater absorbs the gaseous contaminant such as formaldehyde and benzene homologues of low concentration in air, when after operation certain hour, open ptc heater, by the heating of short time, the formaldehyde of absorption and benzene homologues quick catalysis are oxidized and " absorption-catalysis " compound system is regenerated, thus the effect of long-acting purify air middle formaldehyde and benzene homologues can be realized.
Given this, in one aspect of the invention, the invention provides a kind of ptc heater.According to embodiments of the invention, with reference to Fig. 1, this ptc heater 1 comprises: PTC fever tablet 2; Fin 3; And metallic support framework 4, wherein, area load at least partially one of at least in fin 3 and metallic support framework 4 have absorption-catalytic composite to be 5 (fin 3 and metallic support framework 4 surface stick absorption-catalytic composite be 5 schematic diagram see Fig. 3), above-mentioned absorption-catalytic composite is 5 to contain: be selected from least one in noble metal and metal oxide; And porous adsorbing material.Inventor finds, this ptc heater can be effective to various electrical equipment and (include but not limited to air-conditioning, hot air curtain device, dehumidifier, drying machine, dryer, warm-air drier and air purifier etc.), relative to the electric equipment adopting common ptc heater, according to the electrical equipment of the embodiment of the present invention operationally, first porous adsorbing material on ptc heater absorbs the gaseous contaminant such as formaldehyde and benzene homologues of low concentration in air, when after operation certain hour, open ptc heater, by the heating of short time, the formaldehyde of absorption and benzene homologues quick catalysis are oxidized and " absorption-catalysis " compound system is regenerated, thus the effect of long-acting purify air middle formaldehyde and benzene homologues can be realized, effectively can overcome the existing adsorption method sorbing material life-span thus short, secondary pollution can be produced by desorption, the inefficacy of chemisorbed, and photocatalysis makes complex structure and other problems.In addition, according to the ptc heater of the embodiment of the present invention, the double effects of long-acting air cleaning and auxiliary heating can be realized, thus without the need to extra air cleaning unit, easily structurally realize, and there is cost advantage, be easy to apply.
For the ease of using, ptc heater according to the embodiment of the present invention can be connected with electric control gear 6, electric control gear 6 can accept the signal of the device with distant control function, and be provided with program in electric control gear 6, can automatically open ptc heater 1 after equipment runs certain hour and carry out catalysis, also can realize PTC heating by the pressure purification function had on the device of distant control function and carry out catalysis.
According to embodiments of the invention, absorption-catalytic composite be 5 can by any mode load known in the art and fin 3 and/or metallic support framework 4 at least partially on the surface, such as, can by binder by absorption-catalytic composite be 5 loads and fin 3 and/or metallic support framework 4 at least partially on the surface.In an embodiment of the present invention, absorption-catalytic composite be the hot recycling temperature of 5 lower than 250 DEG C, and can catalytic activity be kept when Long-Time Service temperature 200 DEG C.
According to embodiments of the invention, the concrete structure of fin 3 is not particularly limited, and those skilled in the art can select according to actual needs flexibly.In some embodiments of the invention, fin 3 has at least one in " W " type structure (structural representation is shown in Fig. 1) that is selected from, cell structure (not shown), alveolate texture (structural representation is shown in Fig. 2).Thus, fin has larger specific area, be beneficial to heat radiation and load more adsorb-catalytic composite is 5, to improve the efficiency purified air.
According to embodiments of the invention, the concrete kind of noble metal is not particularly limited, as long as the formaldehyde that can be effective in photocatalytic oxidation air and benzene homologues.In some embodiments of the invention, noble metal can for being selected from least one in Pt, Rh, Pd, Au and Ag.Thus, the efficiency of catalytic oxidation is higher, and can keep catalytic activity working temperature 200 degrees Celsius, and regeneration temperature, lower than 250 degrees Celsius, is conducive to keeping long-effect active.
According to embodiments of the invention, the concrete kind of metal oxide is not particularly limited, as long as the formaldehyde that can be used in photocatalytic oxidation air and benzene homologues.In some embodiments of the invention, metal oxide can for being selected from least one in the oxide of Mn, Co, Ti, Ce, Wo, Ni and compound thereof.Thus, the efficiency of catalytic oxidation is higher, and can long term maintenance catalytic activity.
According to embodiments of the invention, the concrete kind of porous adsorbing material is not particularly limited, as long as can formaldehyde effectively in absorbed air and benzene homologues.In some embodiments of the invention, porous adsorbing material can for being selected from pottery, molecular sieve, hydroxyapatite, at least one in active carbon with loose structure.Thus, adsorption capacity is comparatively strong, is conducive to improving the efficiency purified air.
In another aspect of this invention, the invention provides a kind of electrical equipment.According to embodiments of the invention, this electrical equipment contains foregoing ptc heater.Inventor finds, according to the electrical equipment of the embodiment of the present invention operationally, first porous adsorbing material on ptc heater absorbs the gaseous contaminant such as formaldehyde and benzene homologues of low concentration in air, when after operation certain hour, open ptc heater, by the heating of short time, the formaldehyde of absorption and benzene homologues quick catalysis are oxidized and " absorption-catalysis " compound system is regenerated, thus the effect of long-acting purify air middle formaldehyde and benzene homologues can be realized, effectively can overcome the existing adsorption method sorbing material life-span thus short, secondary pollution can be produced by desorption, the inefficacy of chemisorbed, and photocatalysis makes complex structure and other problems.
According to embodiments of the invention, electrical equipment is be selected from least one in air conditioner, hot air curtain device, dehumidifier, drying machine, dryer, warm-air drier and air purifier.Thus, above-mentioned electrical equipment does not need to arrange extra air cleaning unit can have the function purified air simultaneously, and not only structure is simple, be easy to realize, and cost is lower, is easy to apply.
Embodiment
Embodiment 1:
With reference to Fig. 1, ptc heater 1 comprises the parts such as PTC fever tablet 2, fin 3, metallic support framework 4, this fin 3 is common " W " type ripple struction, metallic support framework 4 is aluminum alloy materials, load " absorption-catalysis " compound system 5 on the surface of fin 3 and metallic support framework 4.Should be made up of Pt/ manganese metal oxygen compound catalyst and molecular sieve by " absorption-catalysis " compound system 5.Be somebody's turn to do the hot recycling temperature of " absorption-catalysis " compound system 5 lower than 200 DEG C, and can catalytic activity be kept when Long-Time Service temperature 200 DEG C.This ptc heater 1 is connected with air conditioner electric control 6, air conditioner electric control 6 can accept the signal of the device 7 (not indicating in figure) with distant control function, this air conditioner electric control 6 is provided with program, automatically can open after operation of air conditioner certain hour PTC heating carry out catalysis, or by the pressure purification function on distant control function device 7 realize PTC heating carry out catalysis.
Embodiment 2:
With reference to Fig. 2, ptc heater 1 comprises the parts such as PTC fever tablet 2, fin 3, metallic support framework 4, this fin 3 is honeycomb, and metallic support framework 4 is aluminum alloy materials, load " absorption-catalysis " compound system 5 on the surface of fin 3 and metallic support framework 4.Should be made up of the oxide catalyst of Mn, Ce and active carbon by " absorption-catalysis " compound system 5.Be somebody's turn to do the hot recycling temperature of " absorption-catalysis " compound system 5 lower than 250 DEG C, and can catalytic activity be kept when Long-Time Service temperature 200 DEG C.This ptc heater 1 is connected with air conditioner electric control 6, air conditioner electric control 6 can accept the signal of the device 7 with distant control function, this air conditioner electric control 6 is provided with program, automatically can open after operation of air conditioner certain hour PTC heating carry out catalysis, or by the pressure purification function on distant control function device 7 realize PTC heating carry out catalysis.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (7)
1. a ptc heater, is characterized in that, comprising:
PTC fever tablet;
Fin; And
Metallic support framework,
Wherein, the area load at least partially one of at least in described fin and described metallic support framework has absorption-catalytic composite system,
Described absorption-catalytic composite system is contained:
Be selected from least one in noble metal and metal oxide; And
Porous adsorbing material.
2. ptc heater according to claim 1, is characterized in that, described fin has at least one be selected from " W " type structure, cell structure, alveolate texture.
3. ptc heater according to claim 1, is characterized in that, described noble metal is at least one be selected from Pt, Rh, Pd, Au and Ag.
4. ptc heater according to claim 1, is characterized in that, said metal is oxidized at least one in the oxide and compound thereof being selected from Mn, Co, Ti, Ce, Wo, Ni.
5. ptc heater according to claim 1, is characterized in that, described porous adsorbing material is be selected from pottery, molecular sieve, hydroxyapatite, at least one in active carbon with loose structure.
6. an electrical equipment, is characterized in that, containing the ptc heater according to any one of claim 1-5.
7. electrical equipment according to claim 6, is characterized in that, described electrical equipment is be selected from least one in air-conditioning, hot air curtain device, dehumidifier, drying machine, dryer, warm-air drier and air purifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510317344.XA CN104955179A (en) | 2015-06-10 | 2015-06-10 | PTC (positive temperature coefficient) heater and electric appliance comprising same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510317344.XA CN104955179A (en) | 2015-06-10 | 2015-06-10 | PTC (positive temperature coefficient) heater and electric appliance comprising same |
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| CN104955179A true CN104955179A (en) | 2015-09-30 |
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| CN201510317344.XA Pending CN104955179A (en) | 2015-06-10 | 2015-06-10 | PTC (positive temperature coefficient) heater and electric appliance comprising same |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402806A (en) * | 2015-10-30 | 2016-03-16 | 广东美的制冷设备有限公司 | Positive temperature coefficient (PTC) heating purifier, manufacturing method thereof and electric appliance |
| CN106039986A (en) * | 2016-05-27 | 2016-10-26 | 山东永华净化科技有限公司 | Movable heating adsorption catalysis module |
| CN107143906A (en) * | 2017-05-16 | 2017-09-08 | 清华大学 | Electric heating device capable of purifying air and the preparation method of safety glass supported catalyst |
| CN107687677A (en) * | 2017-09-22 | 2018-02-13 | 清华大学 | Air-purifying piece and air cleaner modules |
| CN110314531A (en) * | 2018-03-30 | 2019-10-11 | 中国科学院过程工程研究所 | A kind of VOCs absorption-electrically heated catalytic coupling function component and preparation method thereof |
| CN112569778A (en) * | 2020-09-30 | 2021-03-30 | 天津大学 | Formaldehyde removal method by using PTC (positive temperature coefficient) ceramic heater and filter element |
| CN112844038A (en) * | 2020-12-31 | 2021-05-28 | 上海华谊新材料有限公司 | Exhaust gas treatment system and exhaust gas treatment method |
| CN112963929A (en) * | 2021-03-20 | 2021-06-15 | 江苏舒源空调制造有限公司 | Fresh air handling unit with purification, sterilization and disinfection functions and purification, sterilization and disinfection process thereof |
| CN114501703A (en) * | 2022-02-09 | 2022-05-13 | 北京小米移动软件有限公司 | Electric heater heating assembly, preparation method thereof and electric heater |
| CN114576782A (en) * | 2020-11-30 | 2022-06-03 | 广东美的制冷设备有限公司 | Thermal catalytic device and household appliance with same |
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| CN105402806A (en) * | 2015-10-30 | 2016-03-16 | 广东美的制冷设备有限公司 | Positive temperature coefficient (PTC) heating purifier, manufacturing method thereof and electric appliance |
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| CN114576782A (en) * | 2020-11-30 | 2022-06-03 | 广东美的制冷设备有限公司 | Thermal catalytic device and household appliance with same |
| CN114576782B (en) * | 2020-11-30 | 2024-04-26 | 广东美的制冷设备有限公司 | Thermocatalytic device and household appliance with same |
| CN112844038A (en) * | 2020-12-31 | 2021-05-28 | 上海华谊新材料有限公司 | Exhaust gas treatment system and exhaust gas treatment method |
| CN112844038B (en) * | 2020-12-31 | 2023-10-03 | 上海华谊新材料有限公司 | Exhaust gas treatment system and exhaust gas treatment method |
| CN112963929A (en) * | 2021-03-20 | 2021-06-15 | 江苏舒源空调制造有限公司 | Fresh air handling unit with purification, sterilization and disinfection functions and purification, sterilization and disinfection process thereof |
| CN114501703A (en) * | 2022-02-09 | 2022-05-13 | 北京小米移动软件有限公司 | Electric heater heating assembly, preparation method thereof and electric heater |
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