Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Formaldehyde removal filtering screen as well as preparation method and application thereof

A filter and formaldehyde technology, applied in the field of air purification, can solve the problems of reducing the formaldehyde removal activity of MnO2, reducing the activity of manganese oxides, breeding bacteria, and general formaldehyde removal effect, so as to improve the formaldehyde removal ability, low wind resistance, and avoid dust. The effect of pollution

Pending Publication Date: 2021-07-02
HISENSE (GUANGDONG) AIR CONDITIONER
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing coating slurry by this method, MnO 2 It needs to be fully mixed with solvents and adhesives, and there will be adhesives and solvents that block MnO 2 active site issues, thereby reducing the MnO 2 formaldehyde removal activity
CN106345409A and CN106423147A load manganese oxides in activated carbon and clay materials respectively, and these activated carbons or clay particles loaded with manganese oxides are filled in honeycomb frames to form formaldehyde-removing filter screens, but this filled particle type filter screen The wind resistance is large, and the removal effect on formaldehyde is average. In addition, activated carbon is easy to be affected by moisture, which is easy to reduce the activity of manganese oxide and breed bacteria.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Formaldehyde removal filtering screen as well as preparation method and application thereof
  • Formaldehyde removal filtering screen as well as preparation method and application thereof
  • Formaldehyde removal filtering screen as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0075] The present invention also provides a method for preparing the formaldehyde-removing filter screen described in the foregoing embodiments, comprising the following steps:

[0076] (1) Carry out pretreatment to substrate;

[0077] (2) Coating an adhesive layer on the surface of the vent hole inner wall of the substrate treated in step (1) by spraying or soaking;

[0078] (3) Spray the aldehyde-removing particles onto the surface of the adhesive layer by means of powder electrostatic spraying, and form a layer of aldehyde-removing particles after drying to obtain a filter body comprising a substrate, an adhesive layer and an aldehyde-removing particle layer;

[0079] (4) Cutting the filter body according to the required size, and bonding the frame to the outer periphery of the filter body to obtain the formaldehyde-removing filter.

[0080] In the preparation process of the formaldehyde-removing filter screen of the present invention, the method of coating the adhesive l...

Embodiment 1

[0096] The formaldehyde removal filter screen 1 of the present embodiment, such as Figure 1-2 As shown, it includes a filter body and a frame 7 located on the periphery of the filter body;

[0097] The filter body includes:

[0098] a substrate 2, the substrate 2 has a plurality of ventilation holes 3 extending along the thickness direction;

[0099] An adhesive layer 5, the adhesive layer 5 is arranged on the surface of the inner wall 4 of the vent hole of the substrate 2;

[0100] The aldehyde-removing particle layer 6 , the aldehyde-removing particle layer 6 is made of nanoscale aldehyde-removing particles, and adhered to the surface of the adhesive layer 5 .

[0101] The preparation method of the formaldehyde-removing filter screen of the present embodiment comprises the following steps:

[0102] 1) Place the aluminum honeycomb core substrate with a thickness of 5 mm, a mesh number of 200 mesh, and a hexagonal cross-sectional shape of the vent hole in the acidic degrea...

Embodiment 2

[0107] The structure and preparation method of the formaldehyde-removing filter screen of this embodiment are basically the same as that of Example 1, the difference is that in step 2) of the preparation method of the formaldehyde-removing filter screen of this embodiment, 20 parts by mass of water-based polyurethane adhesive, 0.1 Parts by mass of the cellulose thickener and 79.9 parts by mass of water were evenly mixed to form an adhesive layer mixed solution with a viscosity of 1050 mPa·s, and then the base material treated in step (1) was placed in the mixed solution for 3 minutes, Lift the substrate and blow off the excess slurry to form a structure including the substrate and the adhesive layer.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Total thicknessaaaaaaaaaa
Meshaaaaaaaaaa
Median particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a formaldehyde removal filtering screen as well as a preparation method and application thereof. The formaldehyde removal filtering screen comprises a filtering body and a frame located on the periphery of the filtering body. The filtering body includes: a substrate having a plurality of vent holes extending in a thickness direction; an adhesive layer which is arranged on the surface of the inner wall of the vent hole of the substrate; and a formaldehyde removal particle layer which is prepared from nanoscale formaldehyde removal particles and is adhered to the surface of the adhesive layer. The formaldehyde removal filtering screen has the characteristics of high efficiency and low wind resistance, is applied to air treatment devices such as an air purifier and an air conditioner indoor unit, and can efficiently and harmlessly remove formaldehyde pollutants in air at room temperature.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a formaldehyde-removing filter screen and a preparation method and application thereof. Background technique [0002] In the indoor space where people work and live, the air not only contains a large amount of particulate matter, such as dust, smoke, powder, etc., but also has many gaseous volatile organic pollutants, such as nitrogen oxides, ozone, formaldehyde, toluene, xylene Wait. Among them, formaldehyde is the main pollutant of indoor air pollution caused by decoration and furniture. It has the characteristics of slow release and persistent pollution. It is determined by the World Health Organization as a carcinogenic and teratogenic substance, which can cause nasopharyngeal cancer and leukemia. According to the survey, the concentration of formaldehyde in most of the rooms exceeds the hygienic standard, especially in newly decorated rooms, the concentration of fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D53/86B01D53/72B01D53/00
CPCB01D53/8668B01D53/72B01D53/007B01D2258/06B01D2257/504B01D2255/802
Inventor 卢杰宏李云蹊
Owner HISENSE (GUANGDONG) AIR CONDITIONER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com