CN204740240U - Domestic detection device of formaldehyde - Google Patents
Domestic detection device of formaldehyde Download PDFInfo
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- CN204740240U CN204740240U CN201520266300.4U CN201520266300U CN204740240U CN 204740240 U CN204740240 U CN 204740240U CN 201520266300 U CN201520266300 U CN 201520266300U CN 204740240 U CN204740240 U CN 204740240U
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- hollow chamber
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Abstract
The utility model provides a domestic detection device of formaldehyde, simple structure, convenient to use to can improve the accuracy of testing result. Domestic detection device still includes the casing that has well plenum chamber including the sensor that is used for detecting formaldehyde content, place in the sensor in the well plenum chamber, the ventilation hole with the air intercommunication that awaits measuring is seted up to the casing, well plenum chamber can with ventilation hole intercommunication. Compare with indoor environmental facies, the well plenum chamber of casing inside is closed relatively, and only through the ventilation hole and the air intercommunication that awaits measuring, then the interior air of well plenum chamber is stable higher, receives the influence of physics disturbance less, can effectively reduce because of the influence of the physics disturbance in the air to the sensor testing result, and then the accuracy of improvement testing result, this application has only effectively reduced the influence of physics disturbance to the testing result, its simple structure through the setting of casing promptly, the sensor can direct detection acquires the content of formaldehyde, the installation with use all comparatively convenient.
Description
Technical field
The utility model relates to formaldehyde examination technical field, particularly relates to a kind of family expenses pick-up unit of formaldehyde.
Background technology
Formaldehyde is a kind of important Organic Ingredients, and being widely used in, in the raw material fitted up, because formaldehyde is the material that toxicity is higher, needs in practice to detect the content of formaldehyde in environment usually.
According to the difference of field of employment, the pick-up unit of formaldehyde comprises family expenses and industrial, and family expenses pick-up unit is divided into again easy device and exact instrument.Wherein, exact instrument expensive, and need to carry out multi-point sampling in testing process in whole space to be detected, leave standstill a period of time after then sample being carried out mixing, just can detect after sample complete stability.Because the trace routine of above-mentioned exact instrument is comparatively complicated, and cost is higher, and its usable range is less.At present, the family expenses pick-up unit of comparatively common formaldehyde is easy device, comprises the sensor being arranged on air vent inside surface, so that sensor fully can contact with air to be detected, thus detects the content of formaldehyde in air.
Above-mentioned easy device is because of low price, easy to use, receives widespread use.But because in sensor opposing air, the ability of physical perturbation is more weak, and the physical stability of disposed at air vent air is poor, causes the numerical fluctuations detected by sensor comparatively large, and accuracy in detection is lower, even misguides the consumer time serious.
Therefore, how to design a kind of family expenses pick-up unit of formaldehyde, to improve the accuracy of its testing result, become the technical matters that those skilled in the art need solution at present badly.
Utility model content
The purpose of this utility model is to provide a kind of family expenses pick-up unit of formaldehyde, and structure is simple, easy to use, and can improve the accuracy of testing result.
For solving the problems of the technologies described above, the utility model provides a kind of family expenses pick-up unit of formaldehyde, comprise the sensor for detecting content of formaldehyde, also comprise the housing with hollow chamber, described sensor is built in described hollow chamber, described housing offers the air vent with air communication to be measured, and described hollow chamber can be communicated with described air vent.
Family expenses pick-up unit of the present utility model, sensor is built in the hollow chamber of housing, and housing offers the air vent with air communication to be measured, so that air to be measured is entered in hollow chamber by air vent, and then detect the content of formaldehyde in air to be measured by sensor.
Compared with indoor environment, hollow chamber's relative closure of enclosure interior, by means of only air vent and air communication to be measured, then the stability of cavity room air is higher, impact by physical perturbation is less, effectively can reduce because the physical perturbation in air is on the impact of sensor institute testing result, and then improve the accuracy of testing result.Moreover sensor can obtain the content of formaldehyde by direct-detection, without the need to carrying out multidraw to air to be measured, also without the need to mixing sample, makes whole testing process simple.In addition, namely the application effectively reduces the impact of physical perturbation on testing result by means of only the setting of housing, and its structure is simple, install and use all comparatively convenient.
Alternatively, also comprise fan, so that by the rotation of described fan by air exchange to be measured to described hollow chamber.Cross-ventilated efficiency can be improved by the rotation of fan, so that air to be measured enters in described hollow chamber quickly and evenly, thus improve the accuracy of detection efficiency and testing result.
Alternatively, described fan is arranged on the medial surface of described air vent.
Alternatively, described sensor is arranged on the centre of described hollow chamber.
Alternatively, also comprise the erecting frame for installing described sensor, described erecting frame is connected with the inwall of described hollow chamber, to be fixed in described hollow chamber by described sensor.
Alternatively, the inwall of described erecting frame and described hollow chamber removably connects.
Alternatively, described erecting frame is circular setting, and is connected with the inwall of its external annulus with described hollow chamber, and its internal ring wall radially extends internally and forms connecting link for connecting described sensor.
Alternatively, described housing comprises cylindric main body, and upper head plate and the bottom plate at two ends is descended in shutoff on the body respectively, and three jointly encloses and forms described hollow chamber; Described air vent comprises the upper air vent being arranged on described upper head plate, and is arranged on the lower air vent of described bottom plate.
Alternatively, described fan is arranged on the medial surface of described bottom plate.
Alternatively, described upper head plate and/or described bottom plate be reticular lamina at least partially, the mesh of described reticular lamina forms described upper air vent and/or described lower air vent.
Accompanying drawing explanation
Fig. 1 provides by the utility model the structural representation of family expenses pick-up unit in a kind of embodiment of formaldehyde.
In Fig. 1:
Sensor 1, housing 2, hollow chamber 21, main body 22, upper head plate 23, bottom plate 24, upper air vent 31, lower air vent 32, fan 4, erecting frame 5, connecting link 51
Embodiment
Core of the present utility model is to provide a kind of family expenses pick-up unit of formaldehyde, and structure is simple, easy to use, and can improve the accuracy of testing result.
Below in conjunction with accompanying drawing, feeding-distribution device of the present utility model is specifically introduced, so that those skilled in the art's accurate understanding the technical solution of the utility model.
As shown in Figure 1, the utility model provides a kind of family expenses pick-up unit of formaldehyde, and for detecting the content of formaldehyde in indoor air, comprise sensor 1 and housing 2, housing 2 has hollow chamber 21, and sensor 1 can be built in the hollow chamber 21 of housing 2; Housing 2 also offers the air vent be connected with air to be measured, and the hollow chamber 21 of housing 2 can be communicated with air vent, so that by air vent and air communication to be measured.Because air to be measured is contacted with sensor 1 by air vent, hollow chamber 21 successively, make sensor 1 can detect the content of formaldehyde in air to be measured.
Those skilled in the art are to be understood that, the hollow chamber 21 of housing 2 is compared with indoor environment, be equivalent to a space comparatively closed, because the air to be measured of indoor is communicated with hollow chamber 21, after cross-ventilation effect after a while, indoor air to be measured can enter in hollow chamber 21, then the sensor 1 being built in hollow chamber 21 just can detect the content of formaldehyde in air.
It should be noted that, after air to be measured enters hollow chamber 21, due to hollow chamber 21 relative closure, the stability being then in the air to be measured in hollow chamber 21 is better, substantially can not be subject to the impact of external environment condition, the impact of physical perturbation on the air to be measured in hollow chamber 21 is in other words less, therefore, physical perturbation can be avoided the impact of sensor 1 testing result, improve the accuracy of testing result.
It should be noted that, it is comparatively speaking that hollow chamber 21 described herein has closure, and compared with whole indoor environment, it is inner that hollow chamber 21 is in housing 2, barrier because of housing 2 forms the space of a relative closure, to maintain the stability of sensor 1 detection space; But it will be understood by those skilled in the art that hollow chamber 21 is not absolute tightness, it must by air vent and outside air communication to be measured, can not be completely closed.
In detail, the version of housing 2 is various, the main body 22 that can cylindrically arrange and the end plate of shutoff at main body 22 two ends, also the tubular construction of other shapes can be adopted, now, main body 22 jointly can enclose with the end plate at two ends and form described hollow chamber 21, as shown in Figure 1.
In more detail, shutoff can be defined as upper head plate 23 at the end plate of main body 22 upper end, and shutoff can be defined as bottom plate 24 at the end plate of main body 22 lower end.For realizing being communicated with of hollow chamber 21 and air to be measured, air vent can be set in main body 22; More preferably, for improving the performance of hollow chamber 21 resistance against physical disturbance, can arrange air vent on upper head plate 23 and/or bottom plate 24, namely air vent can be arranged on upper head plate 23 or the bottom plate 24 of housing 2.Or housing 2 can also be the prism-shaped of hollow or the cone structure of hollow, and its hollow bulb forms described hollow chamber 21, air vent can select to be arranged on wherein certain or certain on several as required.That is, those skilled in the art can arrange the version of housing 2 as required, as long as can form the hollow chamber 21 with a constant volume.
Further, the utility model can also comprise fan 4, the rotation of fan 4 can drive circulating of housing 2 inner chamber and extraneous air, namely circulating of air in hollow chamber 21 and outside air to be measured is realized, by cross-ventilation effect by air exchange to be measured to described hollow chamber 21, so that sensor 1 detects the content of formaldehyde in air to be measured.
Particularly, fan 4 can be arranged on the medial surface of air vent, namely arranges near the inner side of air vent, can be arranged on the medial surface of air vent.When fan 4 is arranged on the position near air vent, effectively can increase the convection action of housing 2 inner air and outer air, improve the efficiency of air exchange, and then improve detection efficiency.As herein described inside and outside with the center of housing 2 for reference, in the direction at housing 2 center is, the direction away from housing 2 center is outward.
For improving detection accuracy, sensor 1 can also be arranged on the centre of hollow chamber 21.Consider the mobility of air, the air flow property at hollow chamber 21 two ends is comparatively strong, then the air be in the middle of hollow chamber 21 is comparatively even; When sensor 1 is arranged on hollow chamber 21 middle, the content value of the formaldehyde detected is comparatively accurate, can avoid because air-distribution inequality to be measured affects the accuracy of testing result.Centre described herein is comparatively speaking, refers to the center of hollow chamber 21 for the center of circle, with certain small distance for radius draws the round zone line formed, not refers to the middle of hollow chamber 21 definitely.
As shown in Figure 1, the utility model can also comprise the erecting frame 5 for sensor installation 1, and this erecting frame 5 can be connected with the inwall of hollow chamber 21, then sensor 1 can be fixedly installed in hollow chamber 21 by erecting frame 5.When needing sensor 1 to be arranged on hollow chamber 21 middle, erecting frame 5 can be set at the bosom of hollow chamber 21, then sensor 1 be arranged on this erecting frame 5.More specifically, when housing 2 is set to cylinder-like structure, erecting frame 5 can be set to the connecting board structure of circular ring type, then be fixedly connected with the internal perisporium of the external annulus of annulus with cylindric main body 22; The internal ring wall of annulus can radially extend to form connecting link 51, by connecting link 51, sensor 1 is fixed on the inner ring of annulus, as shown in Figure 1.
Certainly, the version of erecting frame 5 is various, and be not limited to above-mentioned circular web joint, its concrete form is not limit, as long as can realize the fixing of sensor 1.
In addition, dismountable connected mode can also be adopted between the inwall of erecting frame 5 and hollow chamber 21, such as clamping, grafting etc.In detail, can arrange some installation positions on the inwall of hollow chamber 21, erecting frame 5 can be selected to be connected, sensor 1 is fixed on relevant position with wherein certain installation position as required.Describedly somely referring to that number is uncertain, can be two, three or multiple.Obviously, also can adopt between erecting frame 5 and the inwall of hollow chamber 21 weld, rivet, the non-removable fixed form such as one-body molded, thus sensor 1 is fixed on certain ad-hoc location.In other words, those skilled in the art can select sensor 1 to be fixed on certain position as required, also can adopt the structure that sensor 1 position is adjustable, so that the installation site of transformative transducer 1 as required, obtain testing result more accurately.
In the concrete set-up mode of one, air vent can comprise air vent 31 and lower air vent 32, can arrange air vent 31, and arrange lower air vent 32 at passable bottom plate 24 at the upper head plate 23 of housing 2; Upper air vent 31 all can be communicated with hollow chamber 21 with lower air vent 32, to be introduced in hollow chamber 21 by the air to be measured of external environment condition.
When being provided with lower air vent 32, fan 4 can be arranged on the medial surface of lower air vent 32, i.e. the medial surface of the bottom plate 24 of described housing 2.Especially when housing 2 is set to the tubular structure of sealing two ends, the hollow bulb of tubular is just equivalent to described hollow chamber 21, and upper air vent 31 and lower air vent 32 are equivalent to the two ends being up and down arranged on described hollow chamber 21.When fan 4 rotates, air in whole hollow chamber 21 just can produce strong convection current, to exchange with the air to be measured in external environment, circulating air exchange to be measured in hollow chamber 21 by inner air and outer air, improve exchange efficiency and insert the uniformity coefficient of the air to be measured in hollow chamber 21, so that accurately the carrying out of subsequent detection.Moreover, because the density of formaldehyde is less than air, when fan 4 is arranged on the bottom of housing 2, be more conducive to the air being deposited in bottom being discharged, so that the air to be measured containing formaldehyde can enter in hollow chamber 21.
On the basis of the above, the version of upper air vent 31 and lower air vent 32 is various, can be a simple perforate, or some be distributed in housing 2 upper head plate 23, bottom plate 24 or side perforate, as long as being communicated with of hollow chamber 21 and outside air to be measured can be realized.
In the optional embodiment of one, the upper head plate 23 of housing 2 can be set to seal platy structure, and (can be all or at least partially middle part by this shrouding, namely with the center of shrouding be the center of circle, the central region that formed for radius with certain small distance) be set to the structure of reticular lamina, now, the mesh of reticular lamina can form described upper air vent 31.In embodiment as shown in Figure 1, the middle part of shrouding can be set to reticular lamina, be specifically as follows the plate of similar cobweb, to form intensive mesh, each mesh all can form described upper air vent 31, and the housing 2 now formed has air vent 31 on several.Be appreciated that the version of reticular lamina is also variable, also can be set to the reticular lamina of other structures as required.
In like manner, the bottom plate 24 of housing 2 also can adopt the structure of similar upper head plate 23 to arrange, and to form described lower air vent 32, repeats no more herein.
Family expenses pick-up unit described in the utility model in use, can power first to fan 4, fan 4 is made to rotate a period of time, so that the air circulation flow to be measured in the air in hollow chamber 21 and external environment, thus by air exchange to be measured in the hollow chamber 21 of described housing 2.Then, fan 4 can be controlled and stop operating, after standing a period of time, make the air to be measured in hollow chamber 21 be in comparatively stable state; Now, can turn on sensor 1 detect, to obtain the content of formaldehyde in air to be measured.
Visible, content of formaldehyde can be obtained quickly and efficiently, what is more important, because sensor 1 is in the space of relative closure by above-mentioned family expenses pick-up unit, the impact be subject to because of the physical perturbation of air flowing generation is less, can ensure the accuracy of testing result.
It is pointed out that in family expenses pick-up unit of the present utility model, because the air to be measured in the air in hollow chamber 21 and external environment condition certainly exists convection current, therefore after the standing long period, air to be measured can exchange in hollow chamber 21, that is, also can not arrange fan 4; But thisly leave standstill that to carry out the mode efficiency of natural convection lower, the embodiment being provided with fan 4 can be accelerated convection current, improve convection effects.
Above to the utility model provide the family expenses pick-up unit of formaldehyde to be described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands core concept of the present utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (9)
1. the family expenses pick-up unit of a formaldehyde, comprise the sensor (1) for detecting content of formaldehyde, it is characterized in that, also comprise the housing (2) with hollow chamber (21), described sensor (1) is built in described hollow chamber (21), described housing (2) offers the air vent with air communication to be measured, and described hollow chamber (21) can be communicated with described air vent;
Also comprise fan (4), so that by the rotation of described fan (4) by air exchange to be measured to described hollow chamber (21).
2. family expenses pick-up unit as claimed in claim 1, it is characterized in that, described fan (4) is arranged on the medial surface of described air vent.
3. family expenses pick-up unit as claimed in claim 1, it is characterized in that, described sensor (1) is arranged on the centre of described hollow chamber (21).
4. family expenses pick-up unit as claimed in claim 1, it is characterized in that, also comprise the erecting frame (5) for installing described sensor (1), described erecting frame (5) is connected with the inwall of described hollow chamber (21), to be fixed in described hollow chamber (21) by described sensor (1).
5. family expenses pick-up unit as claimed in claim 4, is characterized in that, described erecting frame (5) removably connects with the inwall of described hollow chamber (21).
6. family expenses pick-up unit as claimed in claim 4, it is characterized in that, described erecting frame (5) is in circular setting, and be connected with the inwall of its external annulus with described hollow chamber (21), its internal ring wall radially extends internally and forms connecting link (51) for connecting described sensor (1).
7. the family expenses pick-up unit as described in any one of claim 2-6, it is characterized in that, described housing (2) comprises cylindric main body (22), and respectively shutoff is at described main body (22) upper head plate (23) at two ends and bottom plate (24) up and down, three encloses the described hollow chamber of formation (21) jointly; Described air vent comprises the upper air vent (31) being arranged on described upper head plate (23), and is arranged on the lower air vent (32) of described bottom plate (24).
8. family expenses pick-up unit as claimed in claim 7, it is characterized in that, described fan (4) is arranged on the medial surface of described bottom plate (24).
9. family expenses pick-up unit as claimed in claim 7, it is characterized in that, described upper head plate (23) and/or described bottom plate (24) be reticular lamina at least partially, the mesh of described reticular lamina forms described upper air vent (31) and/or described lower air vent (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266300.4U CN204740240U (en) | 2015-04-28 | 2015-04-28 | Domestic detection device of formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266300.4U CN204740240U (en) | 2015-04-28 | 2015-04-28 | Domestic detection device of formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204740240U true CN204740240U (en) | 2015-11-04 |
Family
ID=54421971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520266300.4U Expired - Fee Related CN204740240U (en) | 2015-04-28 | 2015-04-28 | Domestic detection device of formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204740240U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328892A (en) * | 2017-06-19 | 2017-11-07 | 亿信标准认证集团四川有限公司 | Formaldehyde examination device based on test paper |
| CN110346360A (en) * | 2019-08-15 | 2019-10-18 | 苏州旭喆园纺织科技有限公司 | One kind being used for cloth formaldehyde test device |
-
2015
- 2015-04-28 CN CN201520266300.4U patent/CN204740240U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328892A (en) * | 2017-06-19 | 2017-11-07 | 亿信标准认证集团四川有限公司 | Formaldehyde examination device based on test paper |
| CN110346360A (en) * | 2019-08-15 | 2019-10-18 | 苏州旭喆园纺织科技有限公司 | One kind being used for cloth formaldehyde test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20200428 |