CN212974499U - Air purification equipment with formaldehyde detection device - Google Patents
Air purification equipment with formaldehyde detection device Download PDFInfo
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- CN212974499U CN212974499U CN202020539158.7U CN202020539158U CN212974499U CN 212974499 U CN212974499 U CN 212974499U CN 202020539158 U CN202020539158 U CN 202020539158U CN 212974499 U CN212974499 U CN 212974499U
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Abstract
The utility model relates to an air purification device with formaldehyde detection device, which comprises a shell, a grid net and a fan component which are arranged on the side wall of the shell, wherein the shell is provided with an air inlet and an air outlet, the fan component is provided with a spiral case and an air channel, the air purification device is characterized by also comprising a support and a blocking net, one end edge of the support is arranged on the inner side wall of the shell, the other end edge of the support is connected with the side wall of the air channel, the support, the side wall of the air channel, the grid net and the inner wall of the shell form an independent cavity, the formaldehyde detection device is arranged in the independent cavity, the blocking net is arranged in the independent cavity and arranged on the side wall of the air channel, and the blocking net and the grid net are arranged oppositely, thereby the air flow in the air channel can enter the independent cavity after being purified by the blocking net to be fully mixed with the original air in the independent, shorten formaldehyde detection device's desorption time, improve formaldehyde detection accuracy.
Description
Technical Field
The utility model relates to an air purification equipment field especially relates to an air purification equipment with formaldehyde detection device.
Background
With the increasing demand of people on the air environment, more and more air purification devices are successively brought to the market. In the current air purification industry, most of air purification equipment is provided with a formaldehyde detection component, so that the air purification equipment has a formaldehyde detection function, and the formaldehyde detection component in the air purification equipment is mainly a formaldehyde sensor which adopts an electrochemical or semiconductor mode for detection.
In the existing air purification equipment, formaldehyde detection components are installed at the air inlet and the air outlet of the air purification equipment. When the formaldehyde sensor adopting electrochemistry and a semiconductor to detect formaldehyde works, a stable reaction environment can be provided for the reaction of detecting formaldehyde after the interior of the formaldehyde sensor reaches a certain temperature, so that the obtained formaldehyde detection value is more accurate. However, the air flow velocity at the air inlet and the air outlet is very high, so that the surface temperature of the formaldehyde sensor is greatly reduced, the internal temperature of the formaldehyde sensor is greatly influenced by the air flow, the control is difficult, and the concentration value of formaldehyde in the air cannot be accurately detected.
Certainly, some manufacturers install the formaldehyde detection part at the concave position of the housing of the air purification equipment, although the concave position is not affected by strong airflow, the ventilation of the concave position of the housing is very difficult, the detection of formaldehyde is also delayed seriously, and meanwhile, in a high-concentration formaldehyde gas or interference gas environment, the formaldehyde sensor at the concave position can also reduce the formaldehyde detection accuracy due to the very slow desorption speed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an air purification equipment with formaldehyde detection device is provided to above-mentioned prior art.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: an air purification apparatus with a formaldehyde detection device, comprising:
a housing having an air inlet and an air outlet;
the grid net is positioned on the side wall of the shell;
a fan assembly located in the housing and having a volute and an air duct,
it is characterized by also comprising:
one end edge of the bracket is arranged on the inner side wall of the shell, and the other end edge of the bracket is connected with the side wall of the air duct; wherein, the bracket, the side wall of the air duct, the grid net and the inner wall of the shell form an independent chamber;
a formaldehyde detection device positioned in the independent chamber,
and the barrier net is positioned in the independent cavity and arranged on the side wall of the air channel, and the barrier net and the grid net are oppositely arranged.
In the air purification device, the separation net can adopt a net cloth or a filter net. For example, the mesh number of the mesh cloth or the filter screen used for the barrier net needs to be larger than 1600.
In order to avoid the situation that the detection value of the formaldehyde detection device is lower than the formaldehyde concentration in the indoor air due to the excessively high gas renewal speed in the independent chamber, in the air purification equipment of the utility model, the ventilation area of the blocking net is 1/M of the air inlet of the grid net, M is more than or equal to v.tminL; wherein the air flow rate through the barrier net is marked v and the ventilation time in the separate chamber is marked tminAnd the side length of the grating net along the side wall direction of the shell is marked as L.
Compared with the prior art, the utility model has the advantages of:
firstly, the air purification equipment forms an independent cavity by utilizing the inner wall of the shell, the grid net, the side wall of the air channel and the bracket arranged in the shell, a formaldehyde detection device is arranged in the independent cavity, and a blocking net which is arranged in the independent cavity and is opposite to the grid net is also arranged on the side wall of the air channel, so that air flow in the air channel can enter the independent cavity after being purified by the blocking net to be fully mixed with original air in the independent cavity, the gas flow updating in the independent cavity is accelerated, the running time of the formaldehyde detection device in a high-pollution environment is effectively reduced, the desorption time of the formaldehyde detection device is shortened, and the air purifier can conveniently calibrate the zero point of the formaldehyde detection device in a household environment;
secondly, the air flow in the independent chamber is slower than the air flow entering the independent chamber through the separation net due to the fact that the flow speed of the indoor air entering the independent chamber through self diffusion, so that the air flow in the independent chamber flows from the grid net to the indoor, the particulate pollutants carried in the indoor air are reduced to enter the independent chamber, long-time deposition of the particulate pollutants on the formaldehyde detection device is avoided, and the maintenance time of the formaldehyde detection device is effectively prolonged;
finally, the blocking net can effectively relieve impact of air flow speed on a formaldehyde detection port of the formaldehyde detection device, stability and uniformity of air flow in the independent cavity are guaranteed, and instantaneity of the formaldehyde detection device on formaldehyde concentration detection in the environment is improved.
Drawings
Fig. 1 is a schematic cross-sectional view of an air purification apparatus having a formaldehyde detection device in this embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, this embodiment provides an air purifier with a formaldehyde detecting device, including:
a housing 1 having an air inlet 11 and an air outlet 12;
the grating net 2 is positioned on the side wall of the shell 1;
a fan assembly, located within the housing 1, having a volute 31 and a duct 32,
a bracket 4, one end of which is arranged on the inner side wall of the shell 1 and the other end of which is connected with the side wall 321 of the air duct 32; wherein, the bracket 4, the side wall 321 of the air duct 32, the grille net 2 and the inner wall of the housing 1 form an independent chamber 5;
the formaldehyde detection device 6 is positioned in the independent chamber 5 and is arranged on the bracket 4;
and a barrier net 7 positioned in the independent chamber 5 and disposed on the side wall 321 of the air duct 32, wherein the barrier net 7 is disposed opposite to the grid net 2. Wherein, the blocking net 7 is a net cloth with mesh number larger than 1600 or a filter net with mesh number larger than 1600. In addition, the barrier net 7 in this embodiment is permeableThe air area is 1/M of the air inlet of the grid net 2, and M is more than or equal to v.tminL; wherein the air flow velocity through the barrier net 7 is marked v and the ventilation time in the separate chamber 5 is marked tminThe length of the grid net 2 along the side wall of the housing 1 is denoted by L.
The air purifying process of the air purifier is explained below with reference to fig. 1:
the air flow in the air duct 32 can enter the independent chamber 5 through the blocking net 7, and the air flow entering the independent chamber 5 through the blocking net 7 is purified air;
indoor original air in the independent chamber 5 is fully mixed with purified air, so that the gas flow updating in the independent chamber 5 is accelerated, the running time of the formaldehyde detection device 6 in a high-pollution environment is effectively reduced, the desorption time of the formaldehyde detection device 6 is shortened, and the air purifier can conveniently calibrate the zero point of the formaldehyde detection device 6 in a household environment;
indoor air enters the independent chamber 5 in a free diffusion mode, the flowing speed of air flow entering through free diffusion is lower than the speed of air flow entering the independent chamber 5 through the separation net 7, therefore, the air flow in the independent chamber 5 flows from the grid net 2 to the indoor, the particulate pollutants entrained in the indoor air are reduced to enter the independent chamber 5, long-time deposition of the particulate pollutants on the formaldehyde detection device 6 is avoided, and the maintenance time of the formaldehyde detection device 6 is effectively prolonged.
Because formaldehyde detection device 6 receives the air current influence great to the testing process of formaldehyde concentration, under guaranteeing that clean air current is under the effectual function condition of taking a breath in independent cavity 5, the impact of air current speed to formaldehyde detection device 6's formaldehyde detection port can be alleviated effectively to separation net 7, guarantees the stability and the degree of consistency of the inside air current of independent cavity 5, promotes formaldehyde detection device 6 and to the real-time of formaldehyde concentration detection in the environment.
In addition, after the air purifier is started, the independent chamber 5 with a smaller volume avoids the condition that the detection value of the formaldehyde detection device 6 is lower than the concentration of formaldehyde in the indoor air due to the fact that the updating speed of the gas in the independent chamber is too high, and the formaldehyde detection accuracy is improved.
Claims (5)
1. An air purification apparatus with a formaldehyde detection device, comprising:
a housing (1) having an air inlet (11) and an air outlet (12);
the grating net (2) is positioned on the side wall of the shell (1);
a fan assembly located in the housing (1) and having a volute (31) and an air duct (32),
it is characterized by also comprising:
the bracket (4) is arranged on the inner side wall of the shell (1) at one end edge, and the other end edge is connected with the side wall (321) of the air duct (32); wherein the bracket (4), the side wall (321) of the air duct (32), the grid net (2) and the inner wall of the shell (1) form an independent chamber (5);
a formaldehyde detection device (6) located within the independent chamber (5),
and the barrier net (7) is positioned in the independent chamber (5) and arranged on the side wall (321) of the air duct (32), and the barrier net (7) and the grid net (2) are oppositely arranged.
2. The air purification equipment with the formaldehyde detection device as claimed in claim 1, wherein the blocking net (7) is a mesh or a filter screen.
3. The air purification apparatus with formaldehyde detection device as claimed in claim 2, wherein the mesh number of the blocking net (7) is larger than 1600.
4. The air purification equipment with formaldehyde detection device as claimed in claim 1, wherein the air permeable area of the barrier net (7) is 1/M of the air inlet of the grid net (2), M is more than or equal to v.tminL; wherein the air flow rate through the barrier net is marked v and the ventilation time in the separate chamber is marked tminAnd the side length of the grating net along the side wall direction of the shell is marked as L.
5. The air purification equipment with the formaldehyde detection device as claimed in any one of claims 1 to 4, wherein the air purification equipment is an air purifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539158.7U CN212974499U (en) | 2020-04-13 | 2020-04-13 | Air purification equipment with formaldehyde detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020539158.7U CN212974499U (en) | 2020-04-13 | 2020-04-13 | Air purification equipment with formaldehyde detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212974499U true CN212974499U (en) | 2021-04-16 |
Family
ID=75399063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020539158.7U Active CN212974499U (en) | 2020-04-13 | 2020-04-13 | Air purification equipment with formaldehyde detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212974499U (en) |
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2020
- 2020-04-13 CN CN202020539158.7U patent/CN212974499U/en active Active
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