CN202675531U

CN202675531U - Economical intelligent air freshening device

Info

Publication number: CN202675531U
Application number: CN 201220159756
Authority: CN
Inventors: 张吉康
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-16
Filing date: 2012-04-16
Publication date: 2013-01-16
Anticipated expiration: 2022-04-16

Abstract

An economical intelligent air freshening device is composed of an oxygen concentration monitoring system, an electronic controller and a ventilating device assembly. A single chip microcomputer, an oxygen sensor, a temperature sensor, an alternating current and direct current switching circuit, a display circuit and a control circuit form an electronic automatic control system. A temperature control circuit of a preheater is composed of a control box, a protection circuit, a sampling circuit, a rectification voltage stabilizing circuit, a control circuit, a time delay switch circuit and an electric heating wire. The economical intelligent air freshening device is simple in structure and low in manufacturing cost, saves electric energy, has economy, and can real-timely monitor oxygen concentrations in indoor air and work automatically according to needs so as to enable the indoor air to keep fresh.

Description

The economic intelligent air purifier

Technical field

The utility model relates to a kind of numerical control device, but Real-Time Monitoring indoor oxygen concentration is upgraded room air automatically according to setting the oxygen concentration scope, and can air carries out preheating to pass into gas warmer to passing into.

Background technology

At present, known room air renovator is mainly by air-conditioner and home-use ventilator.Air-conditioner and home-use ventilator all can not be upgraded room air automatically.And no matter be common, energy-conservation or emerging air-conditioner, expense is all relatively more expensive.Also have a lot of places can't use air-conditioning in China, for example can not unify to install an air-conditioner at the hostel of China, even install an air-conditioner, the also high electricity charge of financial insolvency of most of students are difficult to popularize in a lot of zones.

Summary of the invention

Purpose:

The purpose of this utility model provides a kind of room air renovator of Electric automatic control of low cost low-power consumption.It can the Real-Time Monitoring room air in oxygen concentration, automatic operation as required is so that room air keeps is fresh.In the winter of cold, can make that to pass into indoor air warmer.Be provided with the mosquito prevention, dustproof net, have certain air-filtering ability, the mosquito prevention, dustproof net can disassemble cleaning easily.The noise of ventilator own is lower than decibel, satisfies when sleeping night the requirement for restriction to noise.

Implementation method:

The purpose of this utility model is achieved in that

Oxygen concentration Real-Time Monitoring and automatic operation and the control of closing: consist of the economic intelligent air purifier by oxygen concentration monitoring system, electronic controller and ventilation equipment assembly.Form electronic automatic control system by 8051 single-chip microcomputers, lambda sensor and temperature sensor, A/D change-over circuit, display circuit and control circuit.Control circuit adopts the start and stop of bidirectional triode thyristor control motor.When setting suitable oxygen density value, only need to set an oxygen concentration lower limit P1.After ECU calculates oxygen concentration P, P and P1 are compared, if P＜P1, the control controlled silicon conducting, deep bead is opened, ventilator and preheater work; If P〉P1, deep bead is closed, and ventilator and preheater quit work.

The control of air preheater is achieved in that the temperature-control circuit of preheater is by control box, holding circuit, sample circuit, regulator rectifier circuit, control circuit, delay switch circuit, the compositions such as heating wire.

Low noise is achieved in that ventilator can make casing with sheet metal, one side in four sides is installed ventilating fan, its relative one side is opened the air port, the mosquito Air Filter of setting up defences in the inboard of ventilating opening, this mosquito prevention, dustproof net can be extracted out easily and clean, and horizontal obstruct is set in the middle of casing, laterally intercepting is a fan-shaped column, the surface that laterally intercepts arranges aluminium expanded sheets, laterally intercepts inner filling sucting sound material, and sound-absorbing material can be used foamed plastics.Column is upper and lower to be contacted with top and the bottom of casing, laterally intercepts to form tortuous labyrinth passage in casing, external noise can not be led directly to import into indoor.Sound-absorbing material is all laid in cabinet wall and horizontal obstruct, reflects and diffraction in casing to reduce sound wave, so just can obtain larger sound deadening capacity in shorter length, thereby reduce box sizes.But the maze-type structure gas-flow resistance is large, and when air velocity was high, air-flow regeneration noise was larger, the horizontal obstruct of this structure is taked fan-shapedly to reduce simultaneously the ventilating fan rotating speed to reduce resistance, to reduce air velocity, reduce reproduced air-flow noise, thereby when guaranteeing that sound deadening capacity is larger, self-noise is very low.

For reducing air velocity with the motor speed of ventilating fan, can reduce supply voltage.General family expenses ventilating fan is by the 220V mains supply, available auto-transformer with 220V voltage reduce to 125V, 110V, the 95V third gear is selected as required.Because the specified ventilation of general family expenses ventilating fan is larger, so its ventilation still can satisfy the room air-conditioning requirement when step-down is used.

Mosquito prevention, dustproof net easily dismounting is achieved in that the mosquito prevention, dustproof net adopts plug-in installation, in the time of need to cleaning or change, only needs it is got final product from the extraction of ventilation equipment casing.

The utility model is owing to adopting such scheme: can make the economic intelligent air purifier simple in structure, low cost of manufacture is saved electric energy, has economy; Can make the economic intelligent air purifier can the Real-Time Monitoring room air in oxygen concentration, automatic operation as required is so that room air keeps is fresh.In the winter of cold, can make that to pass into indoor air warmer.Be provided with the mosquito prevention, dustproof net, have certain air-filtering ability, the mosquito prevention, dustproof net can disassemble cleaning easily.The noise of ventilation equipment own is lower than decibel, when satisfying personnel and sleeping to the requirement for restriction of noise.

Description of drawingsBelow in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is fundamental diagram of the present utility model.

Fig. 2 is preheater wireway space structure figure.

Fig. 3 preheater wireway cross-sectional structure figure.

The specific embodimentAs shown in Figure 1, form electronic automatic control system by single-chip microcomputer, lambda sensor and temperature sensor, A/D change-over circuit, display circuit and control circuit.The height of oxygen concentration is relevant with many factors such as partial pressure of oxygen, temperature, gas constants.Zirconium oxide oxygen sensor is converted to voltage signal E with partial pressure of oxygen, and temperature sensor is converted to voltage signal T with indoor temperature, then can get the computing formula of indoor oxygen dividing potential drop P:

Wherein, P is indoor mensuration partial pressure of oxygen, the height of its reflection oxygen concentration; P _OExpression is local with reference to partial pressure of oxygen, can measure with relevant reference instrument; R is gas constant; F is the Farady constant.The A/D analog to digital conversion circuit is comprised of ADC0809 and two operational amplifiers, because Zirconium oxide oxygen sensor and temperature sensor measurement voltage range are very low, must amplify through operational amplification circuit, then sends into the A/D change-over circuit and changes, and is input at last ECU.Form static display circuit by three-eight decoder 74LS138 and BCD decoder MCS14495.Owing to when setting suitable oxygen concentration, only need show value, and oxygen concentration showing 3 (2 is integer, 1 decimal), therefore 3 LED only need be set.Control circuit adopts the start and stop of bidirectional triode thyristor control motor.Because alternating current circuit belongs to forceful electric power, for preventing it ECU is disturbed, adopt photoelectric coupler isolation.Because under field conditions (factors), indoor oxygen concentration only can reduce along with people's respiration, can not raise, therefore when setting suitable oxygen density value, only need to set an oxygen concentration lower limit P1.After ECU calculates oxygen concentration P, P and P1 are compared, if P＜P1, then putting the P2.7 mouth is high level, the control controlled silicon conducting, and deep bead is opened, ventilator and preheater work; If P〉P1, then putting the P2.7 mouth is low level, is that deep bead is closed, ventilator and preheater quit work.

Be depicted as the structure chart of preheater wireway such as Fig. 2 and Fig. 3.

General automobile driving speed is higher, so that the ventilation speed of ventilation window is higher, ventilation is larger, and the time that can be used in heating is very of short duration, only has sufficiently high firing rate guarantee within a short period of time the air that passes into fully to be heated.The mode of more common air heat is, air flows in pipe, heat outside pipe, and this method can only heat the part air of close tube wall at short notice, causes by the air heat of pipeline insufficiently, can't guarantee the air themperature that passes into.

The wireway of preheater can be comprised of many tubule dense arrangement, and these tubules can be made with the good material of heat conduction.This various tubule close-packed arrays is together just so that wireway becomes a kind of cellular pipeline, heating wire can be run through and tubule between the slit among, so both can guarantee to ventilate smooth and easy, can greatly increase very hot contact area again, be beneficial to air and fully heated at short notice, this also provides convenience for the control of heating-up temperature.Heating wire is comprised of heating wire and external application insulating barrier.

The utlity model has following characteristics:

1. simple in structure, be easy to make, with low cost, safe and convenient to use, save electric energy, within most people ability to shoulder economically scope.

2. oxygen concentration in can the Real-Time Monitoring room air can automatically start as required and closes ventilator, so that room air keeps is fresh.Can set suitable oxygen concentration scope according to actual conditions, the oxygen concentration that the intelligent air renovator can be surveyed air monitoring device automatically compares with the setting concentration range and judges, and export corresponding instruction, the opening and closing of control ventilator according to the result who judges.

3. in the winter of cold, can make that to pass into indoor air warmer.

4. be provided with the mosquito prevention, dustproof net, have certain air-filtering ability, the mosquito prevention, dustproof net can disassemble cleaning easily.

5. when equipment self noise can satisfy personnel and sleeps to the requirement for restriction of noise.

Claims

1. economic intelligent air purifier, consisted of by oxygen concentration monitoring system, electronic controller and ventilation equipment assembly, it is characterized in that: form electronic automatic control system by single-chip microcomputer, lambda sensor, temperature sensor, A/D change-over circuit, display circuit and control circuit; The temperature-control circuit of preheater is comprised of control box, holding circuit, sample circuit, regulator rectifier circuit, control circuit, delay switch circuit, heating wire.

2. economic intelligent air purifier according to claim 1, it is characterized in that: the wireway of preheater is cellular, and heating wire is beneficial to air and is fully heated at short notice through wherein.