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CN201401936Y - Warm-wind air conditioner adopting ceramic heating assembly - Google Patents

Warm-wind air conditioner adopting ceramic heating assembly Download PDF

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Publication number
CN201401936Y
CN201401936Y CN2009200547304U CN200920054730U CN201401936Y CN 201401936 Y CN201401936 Y CN 201401936Y CN 2009200547304 U CN2009200547304 U CN 2009200547304U CN 200920054730 U CN200920054730 U CN 200920054730U CN 201401936 Y CN201401936 Y CN 201401936Y
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CN
China
Prior art keywords
ceramic heating
heating assembly
warm
conditioning
warm air
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2009200547304U
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Chinese (zh)
Inventor
吴崇隽
王斌
苏方宁
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ZHUHAI YUEKE JINGHUA ELECTRONIC CERAMICS CO Ltd
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ZHUHAI YUEKE JINGHUA ELECTRONIC CERAMICS CO Ltd
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Priority to CN2009200547304U priority Critical patent/CN201401936Y/en
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Publication of CN201401936Y publication Critical patent/CN201401936Y/en
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Abstract

The utility model relates to a warm-wind air conditioner adopting a ceramic heating assembly, comprising a cabinet body, the heating assembly, a centrifugal blower, a control circuit, a lead wire anda power plug, wherein a heating unit of the heating assembly is formed by bonding an alumina ceramic heating element, insulating glue and radiating sheets, wherein the alumina ceramic heating elementcomprises a bottom alumina layer, an upper alumina layer, a conducting layer, an electrode and the lead wire, wherein the conducting layer is formed between the bottom alumina layer and the upper alumina layer; the electrode is connected with the conducting layer; the upper alumina layer is provided with a recessed closed hole; the end parts of the electrode and the lead wire are arranged in the recessed closed hole, and the recessed closed hole is filled with insulating silica gel. The ceramic heating assembly adopted by the novel warm-wind air conditioner is safe and reliable and has no obvious impact current during working; in addition, the initial heating rate of the warm-wind air conditioner is obviously higher than that of a warm-wind air conditioner adopting a PTC heating assembly under the same heating condition, and the unbalanced power of the warm-wind air conditioner is obviously saved more than that of the warm-wind air conditioner adopting the PTC heating assembly when thesame heating effect is achieved.

Description

Adopt the warm air air-conditioning of ceramic heating element
Technical field
The utility model relates to the daily-use electrical appliance field, is specifically related to warm air air-conditioning.
Background technology
Warm air air-conditioning is applicable to the indoor heating in room, hotel, restaurant, is made of cabinet, heat generating component, centrifugal blower, control circuit, lead, attaching plug etc. usually.
As shown in Figure 1, the heat generating component of warm air air-conditioning employing at present is with PTC (positive temperature coefficient, the abbreviation of PositiveTemperature Coefficient) heater element is a core, at the both sides of PTC heater element bonding two sheet metals of conductive viscose (as copper, aluminium, stainless steel substrates), and draw two leads as powered electrode by these two sheet metals, form a heat-generating units, a plurality of such heat-generating units compose in parallel heat generating component (being three heat-generating units among Fig. 1).Yet, dangerous based on heat generating component (being called for short the PTC heat generating component) whole heat generating component surface charging when warm air air-conditioning is worked of PTC heater element, need put the insulation heat proof material again in the sheet metal outside, adopt extra insulating protection to handle; The intrinsic starting power non-linear rapid variation in 5~15 seconds of PTC heat generating component in addition, the dynamic adjustments process causes the heating rate of PTC heat generating component slow, and there is a very significantly dash current in control circuit, and the control circuit designing requirement is relatively harsher.
The utility model content
The utility model provides a kind of warm air air-conditioning that adopts ceramic heating assembly, and purpose is to improve the heat generating component security, improves warm air air-conditioning starting power characteristic, improves heating rate, reduces the dash current to control circuit.
Above-mentioned purpose is realized by following technical scheme:
A kind of warm air air-conditioning that adopts ceramic heating assembly comprises cabinet, heat generating component, centrifugal blower, control circuit, lead and attaching plug; Heat generating component comprises at least one group of ceramic heating unit, and described heat-generating units is formed by alumina ceramic heating element, insulating cement and by the fin that insulating cement is bonded in alumina ceramic heating element upper and lower surface.
Described alumina ceramic heating element comprises: aluminium oxide bottom, aluminium oxide upper strata, be formed at the conductive layer between aluminium oxide bottom and the aluminium oxide upper strata, the electrode and the lead of connecting conductive layer.
Described aluminium oxide upper strata is provided with the indent closed pore, and the end of electrode and lead is arranged in this indent closed pore, and the indent closed pore adopts insulation silica gel to fill up.
The utility model warm air air-conditioning is than the beneficial effect of prior art: the ceramic heating assembly of employing fin surface when work is not charged, and can pass through the 4500V/1s voltage-withstand test, and is safe and reliable; Simultaneously, the whole duration of work that starts to stabilized operating temperature from energising does not have tangible dash current, and resistance and temperature are the linear positive relation, and temperature and time, power and time are the linear approximate relationship that slowly changes; Under identical heating condition, initial heating rate is obviously fast than the warm air air-conditioning that adopts existing P TC heat generating component, and it is obviously more energy-conservation than the warm air air-conditioning that adopts the PTC heat generating component to reach identical balanced power when adding thermal effect.
Description of drawings
Fig. 1 is the discrete composition diagram of existing P TC heat generating component;
Fig. 2 is the discrete composition diagram of the ceramic heating assembly of the utility model employing;
Fig. 3 be in the ceramic heating assembly that adopts of the utility model ceramic heating element overlook exterior view;
Fig. 4 is that the A-A place is the profile at ceramic heating element electrode place among Fig. 3;
Fig. 5 is the resistance-temperature characteristics figure of ceramic heating element;
Fig. 6 is the resistance-temperature characteristics figure of existing P TC heat generating component;
Fig. 7 adopts the warm air air-conditioning of ceramic heating assembly and the temperature-time response comparison diagram of the warm air air-conditioning that adopts the PTC heat generating component;
Fig. 8 adopts the warm air air-conditioning of ceramic heating assembly and the current-time characteristic comparison diagram of the warm air air-conditioning that adopts the PTC heat generating component.
The specific embodiment
The warm air air-conditioning that present embodiment provides comprises cabinet, ceramic heating assembly, centrifugal blower, control circuit, lead, attaching plug, and wherein cabinet, centrifugal blower, control circuit, lead and attaching plug belong to prior art, repeat no more herein.To creation point of the present utility model, promptly ceramic heating assembly partly highlights below.
As shown in Figure 2, ceramic heating assembly comprises at least one group of ceramic heating unit (among the figure being three groups), and every group of heat-generating units is by alumina ceramic heating element 2-1, insulating cement 2-2 and fin 1-1 is bonding forms.Alumina ceramic heating element 2-1 upper and lower surface is all by the bonding fin 1-1 of insulating cement, and fin 1-1 adopts the aluminum or aluminum alloy material, and insulating cement adopts the insulating cement of anti-500 ℃ of high temperature.
As shown in Figure 3, alumina ceramic heating element 2-1 comprises alumina insulation matrix pottery 3-1, is arranged at the conductive layer (not shown) of alumina insulation matrix pottery 3-1 inside, the electrode 3-2 and the lead 3-3 of connecting conductive layer.As shown in Figure 4, in the present embodiment, alumina insulation matrix pottery 3-1 specifically comprises aluminium oxide bottom 3-6 and aluminium oxide upper strata 3-5, described conductive layer is formed between aluminium oxide bottom 3-6 and the aluminium oxide upper strata 3-5, narrow and small indent closed pore is set on the 3-5 of aluminium oxide upper strata, the long-pending ratio of whole alumina insulation matrix pottery 3-1 total surface that accounts for of this indent hole-closing surface is less than 5%, the end of electrode 3-2 and lead 3-3 is arranged in this indent closed pore, be used for the heater element electrode and draw, the indent closed pore adopts insulation silica gel to fill up.Lead is a nickel wire, and adopts the Teflon sebific duct to entangle and draw.Smooth and easy for conducting, on the conductive layer at indent closed pore place nickel coating 3-4 is set.
Above-mentioned ceramic heating element adopts the aluminium oxide ceramics of The tape casting preparation as alumina insulation matrix pottery, and aluminium oxide bottom 3-6, aluminium oxide upper strata 3-5 interlayer form the heating circuit by the metal paste of printed conductive layer.The multi-layer ceramic chip that laminates after the processing forms at the high temperature sintering that is higher than 1600 ℃ under the wet hydrogen reducing atmosphere that feeds certain proportion steam, the heating pottery afterwards that sintering forms externally has only two electrode eductions, and all the other surfaces more than 95% all are the good aluminium oxide ceramics of insulating properties.Pass through Nickel Plating Treatment then, and in the hydrogen atmosphere stove, weld nickel plain conductor formation electrode outlet line as scolder with good resistance to elevated temperatures and electric conductivity with the yellow gold alloy.
In conjunction with Fig. 2 and above-mentioned statement, every group of ceramic heating unit and whole ceramic heating assembly surface are not charged, add the good insulation performance of alumina substrate material, heat generating component can have been eliminated the potential potential safety hazard of surface charging fully by the voltage-withstand test of 4500V/1S.
Creep age distance among Fig. 4 (between two conductive components or the beeline that records along the insulant surface between conductive component and the utensil border) meets GB 4706.1-2005 " the safe part 1 of family expenses and similar applications electrical equipment: general requirement " and IEC 60335-1-2006 " Household and similar electricalappliances-Safety-Part 1:General requirements " family expenses and similar applications security appliance standard fully.
Handle by insulation silica gel and high temperature Furtulon sleeve pipe, both sides are sticky as a heat-generating units with the insulating cement and the aluminium radiator fin of 500 ℃ of high temperature of ability, structures such as that aluminium radiator fin can adopt is emanant, corrugated, fin type, heat generating component have so one or more heat-generating units to couple together formation by parallel connection or series system.
Further combined with experimental data, the beneficial effects of the utility model are described below:
Fig. 5 is that ceramic heating element normal temperature (25 ± 2 ℃) resistance that the utility model adopts is an experimental data of resistance-temperature curve of 105 Ω, its resistance is along with the slow smooth change of temperature, this linear relationship that is changed to positive temperature coefficient, the resistance-temperature characteristics figure that obviously is different from existing P TC heater element shown in Figure 6, as shown in Figure 6, during the firm energising of PTC heater element, the resistance value of element descends with the rising of temperature, is negative temperature that is NTC characteristic; When temperature is elevated to certain limit, the PTC element will be positive temperature characterisitic, and the starting point of positive temperature characterisitic is so-called curie point.Linear positive relation just because of resistance-temperature of the present invention has determined warm air air-conditioning of the present utility model not have dash current in essence.
Fig. 7 and Fig. 8 are the comparisons of the utility model warm air air-conditioning with the warm air air-conditioning that adopts the PTC heat generating component of same size, model, the contrast experiment of both electric currents of test and temperature characterisitic in equivalent environment.As shown in Figure 7, the utility model heating rate is faster than adopting PTC heat generating component warm air air-conditioning, and the especially preceding 40 seconds efficiency of heating surface is more obvious.
Fig. 8 has provided the utility model warm air air-conditioning and has adopted the current curve diagram of the warm air air-conditioning of PTC heat generating component, as can be seen, adopts the warm air air-conditioning of PTC heat generating component that a tangible dash current peak is arranged.In this experiment, because under the identical situation of other condition, on-load voltage is constant, loop current has just characterized the power consumption of warm air air-conditioning.To the current curve integration, just can find out at a time between in the section, the utility model warm air air-conditioning and adopt the power consumption situation of PTC heat generating component warm air air-conditioning.Both current curves are got 0S → 3600S integration, and the subordinate list among Fig. 8 has provided corresponding integral and calculating result.From integral area, the utility model warm air air-conditioning is 15615.075, adopting the warm air air-conditioning of PTC heat generating component is 19221.675, and the integral area based on the warm air air-conditioning of ceramic heating assembly of comparing that the utility model provides has lacked 18.76% ((19221.675-15615.075)/19221.675).Just, 1h in the testing time section, the power consumption of the warm air air-conditioning of ceramic heating assembly than PTC warm air air-conditioning low 18.76%.

Claims (7)

1. a warm air air-conditioning that adopts ceramic heating assembly comprises cabinet, heat generating component, centrifugal blower, control circuit, lead and attaching plug; It is characterized in that: heat generating component comprises at least one group of ceramic heating unit, and described heat-generating units is formed by alumina ceramic heating element, insulating cement and by the fin that insulating cement is bonded in alumina ceramic heating element upper and lower surface.
2. the warm air air-conditioning of employing ceramic heating assembly according to claim 1 is characterized in that: described alumina ceramic heating element comprises: aluminium oxide bottom, aluminium oxide upper strata, be formed at the conductive layer between aluminium oxide bottom and the aluminium oxide upper strata, the electrode and the lead of connecting conductive layer.
3. the warm air air-conditioning of employing ceramic heating assembly according to claim 2 is characterized in that: described aluminium oxide upper strata is provided with the indent closed pore, and the end of electrode and lead is arranged in this indent closed pore, and the indent closed pore adopts insulation silica gel to fill up.
4. the warm air air-conditioning of employing ceramic heating assembly according to claim 3 is characterized in that: described lead adopts the Teflon sebific duct to entangle and draws.
5. the warm air air-conditioning of employing ceramic heating assembly according to claim 3 is characterized in that: on the conductive layer at described indent closed pore place nickel coating is set.
6. the warm air air-conditioning of employing ceramic heating assembly according to claim 1 is characterized in that: described fin adopts a kind of in emanant, corrugated, the fin type.
7. the warm air air-conditioning of employing ceramic heating assembly according to claim 1 is characterized in that: described insulating cement is the insulating cement of anti-500 ℃ of high temperature.
CN2009200547304U 2009-04-16 2009-04-16 Warm-wind air conditioner adopting ceramic heating assembly Expired - Lifetime CN201401936Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200547304U CN201401936Y (en) 2009-04-16 2009-04-16 Warm-wind air conditioner adopting ceramic heating assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200547304U CN201401936Y (en) 2009-04-16 2009-04-16 Warm-wind air conditioner adopting ceramic heating assembly

Publications (1)

Publication Number Publication Date
CN201401936Y true CN201401936Y (en) 2010-02-10

Family

ID=41661731

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200547304U Expired - Lifetime CN201401936Y (en) 2009-04-16 2009-04-16 Warm-wind air conditioner adopting ceramic heating assembly

Country Status (1)

Country Link
CN (1) CN201401936Y (en)

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Granted publication date: 20100210