CN211799939U - Formaldehyde detection purifier - Google Patents
Formaldehyde detection purifier Download PDFInfo
- Publication number
- CN211799939U CN211799939U CN201922323582.8U CN201922323582U CN211799939U CN 211799939 U CN211799939 U CN 211799939U CN 201922323582 U CN201922323582 U CN 201922323582U CN 211799939 U CN211799939 U CN 211799939U
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- unit
- purification
- detection
- air inlet
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The utility model relates to a formaldehyde detects purifier, including the unit, the detecting element, purification unit and the control circuit board that admit air that all have the cavity, the detecting element sets up and admits air between the unit and the purification unit to the cavity of detecting element is linked together with the cavity of the unit, the purification unit of admitting air, be provided with the air inlet on the unit of admitting air, be provided with the formaldehyde detection sensing subassembly of being connected with the control circuit board electricity in the detecting element, be provided with the gas outlet on the purification unit to be provided with formaldehyde purification filter core in the purification unit. The utility model provides a formaldehyde detection purifier has still set up the purification unit simultaneously when setting up the detecting element, so can also realize the purification treatment to formaldehyde simultaneously in order to realize the detection to formaldehyde content in the air, and the user uses more conveniently, through the detecting element to the acquisition that the testing result of formaldehyde concentration can be clear to formaldehyde purification's in the air effect.
Description
Technical Field
The utility model relates to a formaldehyde detects purifier.
Background
Formaldehyde is a colorless, odorless, toxic gas that has been identified by the world health organization as a carcinogenic and teratogenic substance. Research shows that formaldehyde has strong carcinogenic and carcinogenic effects, and has great influence on human health after a certain amount of formaldehyde is inhaled by a human body, so that the formaldehyde detection is increasingly applied.
However, the existing formaldehyde detection and purification device has the following problems: 1) the long-time detection work of current formaldehyde detection device back can lead to detecting the precision and reduce, and the formaldehyde detection device in work very much and the high concentration formaldehyde environment, working life can greatly reduced for detection error increases. 2) The formaldehyde detection device and the formaldehyde filter device that current user used independently work, and do not have the self-checking of filter element among the formaldehyde filter device and remind the change function, when the unable formaldehyde of filtering of part filter element and when needing to change, the user can't learn filter element's filter capacity, the user only carries out filter element's change according to the experience, and in the change process, all filter elements in the formaldehyde filter device are all changed usually, lead to still having the filter element who filters the utility and also changed, there is the wasting of resources problem. 3) The formaldehyde sensor that uses in the existing market adopts the electrochemistry principle to detect more, then receives easily in the testing process the interference of other gas composition such as toilet water, alcohol, perfume, and then influences the output value of formaldehyde sensor. Therefore, the existing detection device has poor anti-interference performance to organic gas, and the existing scheme generally adopts a plurality of detection sensors with different reaction strengths to alcohol substances to perform data fitting on detection data so as to improve the anti-interference performance of the formaldehyde detection device. However, when the formaldehyde detection device is powered on and started, namely the formaldehyde detection device is used for primary detection, due to the lack of process data, the interference can not be quickly filtered by means of the detection data of the multiple sensors.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the first technical problem that a formaldehyde detection purifier that can enough realize formaldehyde detection and can realize formaldehyde purification is provided to above-mentioned prior art.
The utility model aims to solve the second technical problem that provide one kind to above-mentioned prior art and can reduce and wait that the concentration of detecting gas detects the precision in order to guarantee formaldehyde for a long time, can judge the formaldehyde detection purifier of filter house's filter capacity simultaneously.
The utility model aims to solve the third technical problem that provide a also can effectively realize anti-jamming and acquire more accurate formaldehyde concentration testing result's formaldehyde detection purifier when the start to above-mentioned prior art.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the utility model provides a formaldehyde detects purifier which characterized in that: including the unit of admitting air, the detecting element that all has the cavity, purification unit and control circuit board, the detecting element sets up between the unit of admitting air and purification unit to the cavity of detecting element is linked together with the cavity of the unit of admitting air, purification unit, be provided with the air inlet on the unit of admitting air, be provided with the formaldehyde detection sensing subassembly of being connected with the control circuit board electricity in the detecting element, be provided with the gas outlet on the purification unit to be provided with formaldehyde purification filter core in the purification unit.
The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the formaldehyde detecting and purifying apparatus according to any one of claims 1 to 3, wherein: the air inlet unit is provided with a first air inlet and a second air inlet;
the purification unit is also provided with a detection outlet, and the detection outlet is communicated with a second air inlet of the air inlet unit through a connecting pipe.
In order to improve the uniformity of mixed gas entering the detection unit, an airflow disturbance mechanism is arranged in a connecting channel of the gas inlet unit and the detection unit.
Preferably, the airflow disruption mechanism is a fan.
In order to improve the formaldehyde filtering capacity of the inlet gas, the purification unit comprises at least two purification modules which are communicated with each other, and each purification module is correspondingly provided with a formaldehyde purification filter element;
each purification module is provided with a detection outlet, and each detection outlet is communicated with the second air inlet through a connecting pipe.
Simple structure ground, the interval is provided with two at least formaldehyde purification filter cores in the purification unit and will purify the unit and cut apart into two at least purification module.
In order to control the purification degree of the gas sent into the gas inlet unit conveniently, a switch valve electrically connected with the control circuit board is arranged on each detection outlet, and a first air pump electrically connected with the control circuit board is arranged on each connecting pipe.
Preferably, an air inlet pipe is connected to the first air inlet, and a second air pump electrically connected with the control circuit board is arranged on the air inlet pipe.
The utility model provides a technical scheme that above-mentioned third technical problem adopted does: the formaldehyde detection sensing assembly comprises at least two formaldehyde sensors with different reaction strengths on interference components, and each formaldehyde sensor is electrically connected with the control circuit board respectively.
The formaldehyde detector is simple in structure, and the control circuit board is arranged in the cavity of the detection unit and is electrically connected with the formaldehyde sensors.
Compared with the prior art, the utility model has the advantages of: the utility model provides a formaldehyde detection purifier has still set up the purification unit simultaneously when setting up the detecting element, so can also realize the purification treatment to formaldehyde simultaneously in order to realize the detection to formaldehyde content in the air, and the user uses more conveniently, through the detecting element to the acquisition that the testing result of formaldehyde concentration can be clear to formaldehyde purification's in the air effect.
In addition, can send into the unit of admitting air again with the gas after the purification of purification unit for the gas after the purification mixes the back with the outside air in the unit of admitting air and then enters into the detecting element and carries out the detection of formaldehyde concentration, so the gas after the purification can greatly reduced wait to detect the formaldehyde content in the gas, it only needs to utilize the ratio parameter to obtain the testing result and can obtain accurate testing result, but can effectively guarantee the long-time high detection precision of formaldehyde detection sensing component, extension formaldehyde detects sensing component's life. Simultaneously can also be through the comparison not let in the purified gas of purifying unit and the measuring result of formaldehyde detection sensing assembly when letting in the purified gas of purifying unit, judge the state of formaldehyde purification filter core, and then can effectively remind the user to change when formaldehyde purification filter core became invalid.
Furthermore, on the basis that no process data exists during startup, the formaldehyde sensors with different reaction strengths of interfering components can be mixed with the gas to be detected by independently introducing the purified gas, so that the detection data of the formaldehyde sensors are different, the gas composition state in the air can be conveniently judged, and a more accurate formaldehyde concentration calculation result can be obtained.
Drawings
Fig. 1 is a perspective view of the formaldehyde detecting and purifying device in the embodiment of the present invention.
Fig. 2 is an exploded perspective view of the formaldehyde detecting and purifying device in the embodiment of the present invention.
FIG. 3 is a block diagram of a formaldehyde detecting and purifying apparatus according to an embodiment of the present invention.
Fig. 4 is the utility model discloses in the embodiment of formaldehyde detection purifier's work flow chart.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the formaldehyde detecting and purifying device in this embodiment includes an air inlet unit 1, a detecting unit 2, a purifying unit 3, and a control circuit board 4, all of which have cavities. The air inlet unit 1, the detection unit 2 and the purification unit 3 in the embodiment are all box-shaped, so that the air inlet unit 1, the detection unit 2 and the purification unit 3 are provided with cavities for gas to pass through. The detection unit 2 is attached to one side of the air inlet unit 1, the detection unit 2 is arranged between the air inlet unit 1 and the purification unit 3, and the cavity of the detection unit 2 is communicated with the cavities of the air inlet unit 1 and the purification unit 3. In this embodiment, the rear end of the purifying unit 3 is bent toward the rear of the air inlet unit 1 to form a bent portion, thereby forming the air inlet end of the purifying unit 3. The detection unit 2 is arranged on the top of the purification unit 3 and is matched with the area of the bending part of the purification unit 3.
The air inlet unit 1 is provided with an air inlet, and in the embodiment, the air inlet unit 1 is provided with a first air inlet 11 and a second air inlet 12. Wherein the first air inlet 11 is connected with an air inlet pipe 111, the air inlet pipe 111 is provided with a second air pump 112 electrically connected with the control circuit board, and the control circuit board controls whether the second air pump 112 works or not to control the introduction of the external air to be detected from the first air inlet 11 into the cavity of the air inlet unit 1.
Be provided with formaldehyde purification filter core 32 in the purification unit 3, be provided with gas outlet 31 on the purification unit 3, and then conveniently export the gas after purifying in the purification unit 3 cavity to the air from this gas outlet 31. In order to improve the formaldehyde filtering capacity of the inlet gas, the purification unit 3 comprises at least two purification modules which are communicated with each other, each purification module is correspondingly provided with a formaldehyde purification filter element 32, each purification module is also provided with a detection outlet 33, and each purification module is communicated with the outlet end of the detection unit 2. Each detection outlet 33 of the purge unit 3 communicates with the second air inlet 12 of the air intake unit 1 through the connection pipe 5. In this embodiment, at least two formaldehyde purification filter elements 32 are disposed in the purification unit 3 at intervals to divide the purification unit 3 into at least two purification modules.
The detection outlet 33 of each purification module is provided with a switch valve 331 electrically connected with the control circuit board 4, and each connection pipe 5 is provided with a first air pump 51 electrically connected with the control circuit board 4. The communication state between each purification module and the air inlet unit 1 is controlled by controlling the switch valve 331, and the control module controls whether the first air pump 51 on the corresponding connecting pipe 5 is started or not according to the switch state of the switch valve 331, that is, when the control module detects that the switch valve 331 on the outlet 33 is opened, the first air pump 51 on the corresponding connecting pipe 5 is opened to introduce purified air into the air inlet unit 1. Different communicating pipes are communicated, and the purifying degrees of the purified gas correspondingly introduced into the air inlet unit 1 are slightly different.
In order to improve the uniformity of the mixed gas entering the detection unit 2, an airflow disturbance mechanism 6 is arranged in a connecting channel between the air inlet unit 1 and the detection unit 2, and the airflow disturbance mechanism 6 in the embodiment is a fan.
Be provided with the formaldehyde that is connected with control circuit board 4 electricity in the detecting element 2 and detect sensing component 21, formaldehyde detects sensing component 21 and includes at least two formaldehyde sensors different to interference component reaction strength in this embodiment, and each formaldehyde sensor is connected with control circuit board 4 electricity respectively. In addition, the control circuit board 4 in this embodiment is also disposed in the cavity of the detection unit 2 and electrically connected to each formaldehyde sensor.
The utility model provides a formaldehyde detection purifier has still set up purification unit 3 simultaneously when setting up detecting element 2, so can be in order to realize the detection to formaldehyde content in the air, can also realize the purification treatment to formaldehyde simultaneously, and the user uses more conveniently, through the obtaining effect to formaldehyde purification in the air that detecting element 2 can be clear to the testing result of formaldehyde concentration.
The formaldehyde sensor mainly causes the problem that the detection precision is reduced and the error is increased after the existing formaldehyde detection device works for a long time, and the precision is reduced because the formaldehyde sensor works in an environment containing a target substance for a long time, the zero point of the formaldehyde sensor is deviated, the concentration of the target substance is higher, and the influence on the formaldehyde sensor is more obvious. In this embodiment, the gas purified by the purifying unit 3 may be sent to the air intake unit 1 through the connecting pipe 5, and then the purified gas and the external air are mixed in the air intake unit 1 and then enter the detecting unit 2 to detect the formaldehyde concentration. The gas after purification can greatly reduce the formaldehyde content in the gas to be detected, and further reduce the influence on the working performance of the formaldehyde sensor. The accurate detection result can be obtained only by utilizing the proportion parameters, but the long-time high detection precision of the formaldehyde detection sensing assembly 21 can be effectively ensured, and the service life of the formaldehyde detection sensing assembly 21 is prolonged. Meanwhile, zero marking operation of each formaldehyde sensor can be carried out by adopting a zero marking process of the formaldehyde sensors in the prior art, so that the detection precision of each formaldehyde is improved.
The specific working method of the formaldehyde detection and purification device in the embodiment is as follows: the reaction intensity of the first formaldehyde sensor to the interfering component is F1, and the reaction intensity of the second formaldehyde sensor to the interfering component is F2, F1 ═ KF2, where K > 1. The interfering component gases may include benzene, toluene, acetic acid, alcohols, hydrogen sulfide, carbon monoxide, and the like. When two formaldehyde sensors are selected, formaldehyde sensor products with different reaction strengths on different interference components can be selected according to requirements. When the two formaldehyde sensors detect formaldehyde gas, the output values are kept consistent. And for the interference component, the output value of the first formaldehyde sensor is larger or far larger than that of the second formaldehyde sensor. Therefore, when the interference component occurs, the output value of the first formaldehyde sensor is more sensitive to change and fluctuates more.
After the two formaldehyde sensors are started to work, the two formaldehyde sensors are utilized to respectively and simultaneously acquire original detection data of target detection gas, and if the concentration of formaldehyde in indoor air needs to be detected, the target detection gas is the indoor air.
Then mix into the purge gas and then form the mist in the target testing gas, reuse two formaldehyde sensors to obtain the comparison detection data of mist respectively, adopt a purification unit 3 to carry out the purification of target testing gas in this embodiment to introduce the gas after purifying into the target testing gas, and then form the mist. In this embodiment, the purification coefficient of the purification unit 3 for the interfering component gas in the target detection gas is X, and the purification coefficient of the purification unit 3 for the aldehyde gas in the target detection gas is Y, where X < Y < 1. In this embodiment, the formaldehyde detecting and purifying device described below shows a mode of arranging the purifying unit 3.
The first formaldehyde sensor continuously samples target detection gas according to a set sampling period, and then obtains a data group A which is formed by continuously collected N original detection data [ A ═ A1,A2,……,Ai,……,AN]Wherein i and N are natural numbers, and i is more than or equal to 1 and less than or equal to N; simultaneously calculating an average value Q11 of the data group A;
acquiring a data group B (B) composed of N original detection data continuously acquired by a second formaldehyde sensor on the target detection gas at the same sampling time point as the first formaldehyde sensor1,B2,……,Bi,……,BN](ii) a Simultaneously calculating an average value Q21 of the data group B;
the first formaldehyde sensor continuously samples the mixed gas according to a set sampling period, and then acquires M continuously-collected comparison detection data to form a data set C ═ C1,C2,……,Cj,……,CM]Wherein j and M are natural numbers, and j is more than or equal to 0 and less than or equal to M; simultaneously calculating an average value Q12 of the data group C;
acquiring a data group D ═ D [ D ] formed by M comparison detection data continuously acquired by the second formaldehyde sensor on the mixed gas at the same sampling time point1,D2,……,Dj,……,DM](ii) a Simultaneously calculating an average value Q22 of the data set D;
comparing the original detection data of the two formaldehyde sensors with the comparison detection data, firstly judging whether the purification unit 3 is invalid or not according to the comparison result, and if the purification unit 3 is invalid, reminding a user to replace a purification part in the purification unit 3; and if the formaldehyde concentration values are not invalid, calculating the formaldehyde concentration values in the target detection gas when the two formaldehyde sensors are started.
The formaldehyde concentration degree can be divided into a plurality of levels according to requirements, and each level is provided with a corresponding concentration threshold value. In the embodiment, the formaldehyde concentration is divided into three levels, namely low, medium and high, two concentration thresholds are correspondingly set, namely a concentration threshold Y1 of low formaldehyde concentration is set, and a concentration threshold Y2 of high formaldehyde concentration is set, wherein Y1 < Y2.
The method for judging whether the purification unit 3 is failed comprises the following steps: if there is one of Q11 and Q21 and the average value of the raw detection data of one formaldehyde sensor is larger than the minimum formaldehyde concentration threshold value, that is, if one of Q11 and Q21 is larger than Y1, the decrease ratio P of the detection data of the formaldehyde sensor before and after the incorporation into the purge gas is calculated, where P is (Q11-Q12)/Q11 or P is (Q21-Q22)/Q21, and if P < P0, the purge unit 3 is disabled, where P0 is the decrease ratio threshold value.
If the purification unit 3 is not invalid, the calculation method of the formaldehyde concentration value in the target detection gas is to compare the original detection data and the comparison detection data of the two formaldehyde sensors, judge whether the interference gas exists, and calculate the formaldehyde concentration value in the target detection gas when the two formaldehyde sensors are started according to the original detection data and the comparison detection data of the two formaldehyde sensors. Comparing the data in A and B in the data group, Q11 and Q21 with concentration thresholds of different formaldehyde concentration levels, and judging whether interference gas interfering the detection results of the first formaldehyde sensor and the second formaldehyde sensor exists or not according to the comparison result; comparing Q11 and Q12, comparing Q21 and Q22, and then calculating the formaldehyde concentration value in the target detection gas at the start of the two formaldehyde sensors by using the acquired data according to the comparison result.
The two formaldehyde sensors can have the following states in the working process:
state 1: if each of the raw detection data in the data sets a and B is less than Y1, it is determined that there is substantially no component gas in the target detection gas that affects the detection data of the formaldehyde sensor, and thus the detection data obtained by using the second formaldehyde sensor is more accurate, and the formaldehyde concentration value V ═ d in the corresponding target detection gas in this embodiment is more accurate1Q21, Q21 more accurately calculating the concentration of formaldehyde in the target detection gas in the reaction environment using the raw detection data obtained from the second formaldehyde sensor, wherein d1Is a first correction coefficient;
state 2: if the data group A has the original detected data larger than Y1 and the original detected data smaller than Y1, and Q21 < Y1, while Q12 is substantially equal to (1-X) Q11, namely, the data filtered by the purifying unit 3 is substantially the interfering component gas, the data in the data groups A and B is substantially the data change of the first formaldehyde sensor and the second formaldehyde sensor caused by the interfering component gas, so that it can be judged that the target detected gas contains only a trace amount of the interfering component gas, and the corresponding target detected gas contains formazanAldehyde concentration value V ═ d2Q22, because the aldehyde gas content in the target detection gas is basically negligible and has trace interfering component gas, the formaldehyde concentration in the target detection gas can be more accurately reflected than Q22 obtained by calculating the detection data by adopting the second formaldehyde sensor after being filtered by the purifying unit 3, and the influence of the interfering component gas on the detection result is eliminated, wherein d2Is a second correction coefficient;
state 3: if the data group A has original detection data larger than Y1 and original detection data smaller than Y1, and Q21 is less than Y1, and Q12 is substantially equal to (1-Y) Q11, namely the data filtered by the purifying unit 3 are substantially aldehyde gas, and the data in the data groups A and B are substantially data changes of the first formaldehyde sensor and the second formaldehyde sensor caused by the aldehyde gas, the target detection gas is judged to contain only trace aldehyde gas, and the formaldehyde concentration value V ═ d in the corresponding target detection gas2Q21, the original detection data obtained by the second formaldehyde sensor with stronger anti-jamming capability is adopted to calculate the obtained Q21, so that the concentration of formaldehyde in the target detection gas in the environment can be accurately reacted;
and 4: if Q11 is more than or equal to Y1, Y1 is more than or equal to Q21 and less than Y2, and Q12 is more than or equal to (1-X) Q11+ r, namely, the gas filtered by the purification unit 3 is basically the interference component gas, the target detection gas is judged to contain a small amount of the interference component gas, the original detection data obtained by the second formaldehyde sensor is influenced by the interference component gas, therefore, the formaldehyde concentration in the target detection gas can be reacted more accurately by obtaining comparison and calculating the detection data by adopting the second formaldehyde sensor, and the corresponding formaldehyde concentration value V-d in the target detection gas is3Q22/(1-X), wherein d3Is a third correction coefficient, wherein r is a control margin;
and state 5: if Q11 is more than or equal to Y1, Y1 is more than or equal to Q21 and less than Y2, and simultaneously (1-X) Q11+ r is more than or equal to Q12 and more than or equal to (1-Y) Q11-r are filtered, namely the purification unit 3 filters a part of interference component gas and a part of aldehyde gas, the target detection gas is judged to contain a small amount of aldehyde gas and a small amount of interference component gas, and the concentration value V-d of formaldehyde in the corresponding target detection gas is determined to be the value3(F2Q11－F1Q21)/(F2－F1)；
And 6: if Q11 is more than or equal to Y1, Y1 is more than or equal to Q21 and is more than or equal to Y2, and meanwhile (1-Y) Q11-r is more than or equal to Q12, namely the purified gas filtered by the purification unit 3 is basically the aldehyde gas, the air is judged to only contain a small amount of the aldehyde gas, the concentration of the formaldehyde in the target detection gas in the reaction environment can be more accurately calculated and obtained by adopting the Q21 obtained by the original detection data obtained by the second formaldehyde sensor, and the concentration value V-d of the formaldehyde in the corresponding target detection gas3Q21；
And state 7: if Q11 is more than or equal to Y2 and Q21 is more than or equal to Y2, the target detection gas is considered to contain a large amount of aldehyde gas and interference component gas, and the concentration value V-d of formaldehyde in the corresponding target detection gas4(KQ 22-Q12)/(1-Y), wherein d4Is a fourth correction coefficient.
D1, d2, d3 and d4 in the calculation process are all correction coefficients acquired by the formaldehyde sensor in the previous experiment process, so that the formaldehyde concentration value in the target detection gas acquired through calculation is more accurate.
According to the formaldehyde detection method, on the basis that the two formaldehyde sensors do not have process data when being started, purified gas can be automatically introduced and mixed with target detection gas, so that detection data of the formaldehyde sensors are different, the composition states of the aldehyde gas and other interference component gases in the air can be conveniently judged, the influence of the content of the interference component gases on detection results can be effectively removed when the formaldehyde concentration is calculated, and more accurate formaldehyde concentration calculation results can be obtained.
After the formaldehyde concentration values in the target detection gas when the two formaldehyde sensors are started are calculated, purified gas is continuously mixed into the target detection gas in the working process of the first formaldehyde sensor and the second formaldehyde sensor, and then the formaldehyde concentration values in the target detection gas are detected and calculated in real time, wherein the detection and calculation of the formaldehyde concentration values in the working process can adopt various calculation methods related to the detection of the formaldehyde concentration values by using the two formaldehyde sensors in the prior art.
Claims (10)
1. The utility model provides a formaldehyde detects purifier which characterized in that: including the unit (1) that admits air, detecting element (2), purification unit (3) and control circuit board (4) that all have the cavity, detecting element (2) set up between unit (1) and purification unit (3) admits air to the cavity of detecting element (2) is linked together with the cavity of unit (1), purification unit (3) admits air, be provided with the air inlet on the unit (1) of admitting air, be provided with formaldehyde detection sensing component (21) of being connected with control circuit board (4) electricity in detecting element (2), be provided with gas outlet (31) on purification unit (3) to be provided with formaldehyde purification filter core (32) in purification unit (3).
2. The formaldehyde detection and purification device according to claim 1, wherein: the air inlet unit (1) is provided with a first air inlet (11) and a second air inlet (12);
the purification unit (3) is further provided with a detection outlet (33), and the detection outlet (33) is communicated with a second air inlet (12) of the air inlet unit (1) through a connecting pipe (5).
3. The formaldehyde detection and purification device according to claim 2, wherein: and an airflow disturbance mechanism (6) is arranged in a connecting channel of the air inlet unit (1) and the detection unit (2).
4. The formaldehyde detection and purification device according to claim 3, wherein: the airflow disturbance mechanism (6) is a fan.
5. The formaldehyde detection and purification device according to claim 2, wherein: the purification unit (3) comprises at least two purification modules which are communicated with each other, and each purification module is correspondingly provided with a formaldehyde purification filter element (32);
each purification module is provided with a detection outlet (33), and each detection outlet (33) is communicated with the second air inlet (12) through a connecting pipe (5).
6. The formaldehyde detection and purification device according to claim 5, wherein: at least two formaldehyde purification filter elements (32) are arranged in the purification unit (3) at intervals to divide the purification unit (3) into at least two purification modules.
7. The formaldehyde detection and purification device according to claim 2, wherein: each detection outlet (33) is provided with a switch valve (331) electrically connected with the control circuit board (4), and each connecting pipe (5) is provided with a first air pump (51) electrically connected with the control circuit board (4).
8. The formaldehyde detection and purification device according to claim 2, wherein: an air inlet pipe (111) is connected to the first air inlet (11), and a second air pump (112) electrically connected with the control circuit board is arranged on the air inlet pipe (111).
9. The formaldehyde detecting and purifying apparatus according to any one of claims 1 to 8, wherein: the formaldehyde detection sensing assembly (21) comprises at least two formaldehyde sensors with different reaction strengths on interference components, and each formaldehyde sensor is electrically connected with the control circuit board (4) respectively.
10. The formaldehyde detection and purification device according to claim 9, wherein: the control circuit board (4) is arranged in the cavity of the detection unit (2) and is electrically connected with the formaldehyde sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922323582.8U CN211799939U (en) | 2019-12-20 | 2019-12-20 | Formaldehyde detection purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922323582.8U CN211799939U (en) | 2019-12-20 | 2019-12-20 | Formaldehyde detection purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211799939U true CN211799939U (en) | 2020-10-30 |
Family
ID=73032428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922323582.8U Active CN211799939U (en) | 2019-12-20 | 2019-12-20 | Formaldehyde detection purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211799939U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740146A (en) * | 2021-01-08 | 2022-07-12 | 宁波方太厨具有限公司 | Formaldehyde detection method and formaldehyde detection device |
| CN114877469A (en) * | 2022-04-28 | 2022-08-09 | 北京易研祥环保科技有限公司 | Air purifier with formaldehyde detects function |
-
2019
- 2019-12-20 CN CN201922323582.8U patent/CN211799939U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740146A (en) * | 2021-01-08 | 2022-07-12 | 宁波方太厨具有限公司 | Formaldehyde detection method and formaldehyde detection device |
| CN114877469A (en) * | 2022-04-28 | 2022-08-09 | 北京易研祥环保科技有限公司 | Air purifier with formaldehyde detects function |
| CN114877469B (en) * | 2022-04-28 | 2023-12-01 | 北京易研祥环保科技有限公司 | Air purifier with formaldehyde detects function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211799939U (en) | Formaldehyde detection purifier | |
| JP7143218B2 (en) | Air cleaner and air cleaning method | |
| WO2007087403A2 (en) | Self-calibrating gas detector and method | |
| CN2562181Y (en) | Laser dust instrument | |
| CN113009072B (en) | Formaldehyde detection method | |
| CN102608010B (en) | Particulate matter (PM) detecting method and equipment | |
| CN109781809B (en) | Artificial intelligent calculating method for formaldehyde concentration | |
| CN109030737A (en) | A kind of sewage foul gas detection system and sewage foul gas detection method | |
| CN107664590A (en) | Flue particulate matter isokinetic sampling and Constant Current Control System and its preprocess method based on jet modulation | |
| CN103995089A (en) | WSN (Wireless Sensor Network)-based piggery environment perception electronic nose and working method | |
| CN110082447A (en) | Synchronous characterization water sample Dissolved Organic Matter structure/physics and chemistry/grey density characteristics instrument | |
| CN208170581U (en) | One kind removing aldehyde purifying control system | |
| CN111366692B (en) | Gas environment parameter monitoring system and method | |
| JPWO2017157987A5 (en) | ||
| CN105911109A (en) | Method for online measurement of dissolved oxygen in water, and apparatus thereof | |
| CN110554028B (en) | Gas detection method and gas detection system based on same | |
| CN210294179U (en) | Instrument for synchronously representing structure/physicochemical/concentration characteristics of soluble organic matters in water sample | |
| CN116296620B (en) | Gas path acquisition system, device and method of flue gas analyzer | |
| JP2006284500A (en) | Nitrogen oxide analyzer, and parameter setting method applied to nitrogen oxide analyzer | |
| CN211235116U (en) | Integrated multifunctional sampling pipe for smoke dust and smoke gas | |
| JPH0572094A (en) | Continuous measurement system for polution gas | |
| CN210894102U (en) | Gas sampling accessory failure detection and temperature and humidity compensation device | |
| CN201689072U (en) | Electrochemical oxygen analyzer | |
| CN115015503A (en) | Ocean radon in-situ measurement device and measurement method | |
| CN220455162U (en) | Non-dispersive CO/CO 2 Automatic calibration system for CO zero point in analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |